Environmental Engineering

  1. Water Quality Engineering
    1. Hydrology and Water Resources
      1. The Hydrologic Cycle
        1. Precipitation
          1. Types and Measurement
            1. Spatial and Temporal Variability
            2. Evaporation and Transpiration
              1. Evapotranspiration Estimation
                1. Factors Affecting ET
                2. Infiltration
                  1. Infiltration Capacity
                    1. Horton's Equation
                    2. Runoff
                      1. Surface Runoff Generation
                        1. Hydrograph Analysis
                      2. Surface Water Hydrology
                        1. Watershed Delineation
                          1. Drainage Basin Characteristics
                            1. Topographic Analysis
                            2. Streamflow Measurement
                              1. Flow Gauging Methods
                                1. Rating Curves
                                2. Flood Analysis
                                  1. Frequency Analysis
                                    1. Design Floods
                                      1. Flood Routing
                                    2. Groundwater Hydrology
                                      1. Aquifer Properties
                                        1. Porosity
                                          1. Permeability
                                            1. Transmissivity
                                              1. Storage Coefficient
                                              2. Groundwater Flow Equations
                                                1. Darcy's Law
                                                  1. Flow Nets
                                                    1. Confined and Unconfined Aquifers
                                                    2. Well Hydraulics
                                                      1. Well Design
                                                        1. Pumping Tests
                                                          1. Drawdown Analysis
                                                        2. Water Budgets and Availability
                                                          1. Water Balance Calculations
                                                            1. Water Scarcity Assessment
                                                              1. Drought Analysis
                                                                1. Water Allocation
                                                              2. Water Quality Parameters and Standards
                                                                1. Physical Parameters
                                                                  1. Temperature
                                                                    1. Effects on Water Quality
                                                                      1. Thermal Pollution
                                                                      2. Turbidity
                                                                        1. Measurement Methods
                                                                          1. Nephelometric Units
                                                                          2. Color
                                                                            1. True Color
                                                                              1. Apparent Color
                                                                              2. Odor and Taste
                                                                                1. Sources and Significance
                                                                                  1. Threshold Odor Number
                                                                                  2. Solids
                                                                                    1. Total Suspended Solids
                                                                                      1. Total Dissolved Solids
                                                                                        1. Volatile Solids
                                                                                          1. Fixed Solids
                                                                                        2. Chemical Parameters
                                                                                          1. pH
                                                                                            1. Measurement Techniques
                                                                                              1. pH Control Methods
                                                                                              2. Dissolved Oxygen
                                                                                                1. Oxygen Demand
                                                                                                  1. Reaeration
                                                                                                    1. Oxygen Sag Curve
                                                                                                    2. Biochemical Oxygen Demand
                                                                                                      1. BOD Testing Procedures
                                                                                                        1. BOD5
                                                                                                          1. Ultimate BOD
                                                                                                            1. Carbonaceous and Nitrogenous BOD
                                                                                                            2. Chemical Oxygen Demand
                                                                                                              1. COD Testing Methods
                                                                                                                1. COD vs BOD Relationships
                                                                                                                2. Nutrients
                                                                                                                  1. Nitrogen Forms
                                                                                                                    1. Ammonia
                                                                                                                      1. Nitrite
                                                                                                                        1. Nitrate
                                                                                                                          1. Organic Nitrogen
                                                                                                                          2. Phosphorus Forms
                                                                                                                            1. Orthophosphate
                                                                                                                              1. Polyphosphate
                                                                                                                                1. Organic Phosphorus
                                                                                                                                2. Eutrophication
                                                                                                                                  1. Measurement Techniques
                                                                                                                                  2. Hardness
                                                                                                                                    1. Calcium Hardness
                                                                                                                                      1. Magnesium Hardness
                                                                                                                                        1. Total Hardness
                                                                                                                                          1. Carbonate and Non-carbonate Hardness
                                                                                                                                          2. Heavy Metals
                                                                                                                                            1. Lead
                                                                                                                                              1. Mercury
                                                                                                                                                1. Cadmium
                                                                                                                                                  1. Chromium
                                                                                                                                                    1. Toxicity Mechanisms
                                                                                                                                                      1. Analytical Methods
                                                                                                                                                      2. Organic Contaminants
                                                                                                                                                        1. Pesticides
                                                                                                                                                          1. Herbicides
                                                                                                                                                            1. Industrial Chemicals
                                                                                                                                                              1. Pharmaceuticals and Personal Care Products
                                                                                                                                                            2. Biological Parameters
                                                                                                                                                              1. Pathogens
                                                                                                                                                                1. Bacteria
                                                                                                                                                                  1. Viruses
                                                                                                                                                                    1. Protozoa
                                                                                                                                                                      1. Helminths
                                                                                                                                                                      2. Indicator Organisms
                                                                                                                                                                        1. Total Coliforms
                                                                                                                                                                          1. Fecal Coliforms
                                                                                                                                                                            1. E. coli
                                                                                                                                                                              1. Enterococci
                                                                                                                                                                                1. Bacteriophages
                                                                                                                                                                            2. Drinking Water Supply and Treatment
                                                                                                                                                                              1. Water Source Selection and Protection
                                                                                                                                                                                1. Surface Water Sources
                                                                                                                                                                                  1. Rivers and Streams
                                                                                                                                                                                    1. Lakes and Reservoirs
                                                                                                                                                                                      1. Source Water Quality Assessment
                                                                                                                                                                                      2. Groundwater Sources
                                                                                                                                                                                        1. Aquifer Evaluation
                                                                                                                                                                                          1. Wellhead Protection
                                                                                                                                                                                          2. Source Water Protection Strategies
                                                                                                                                                                                            1. Watershed Management
                                                                                                                                                                                              1. Land Use Controls
                                                                                                                                                                                            2. Water Intake Structures
                                                                                                                                                                                              1. Surface Water Intakes
                                                                                                                                                                                                1. Design Considerations
                                                                                                                                                                                                  1. Fish Protection
                                                                                                                                                                                                  2. Groundwater Wells
                                                                                                                                                                                                    1. Well Construction
                                                                                                                                                                                                      1. Well Development
                                                                                                                                                                                                      2. Screening Devices
                                                                                                                                                                                                        1. Bar Screens
                                                                                                                                                                                                          1. Traveling Screens
                                                                                                                                                                                                        2. Conventional Treatment Train
                                                                                                                                                                                                          1. Screening and Grit Removal
                                                                                                                                                                                                            1. Coarse Screening
                                                                                                                                                                                                              1. Fine Screening
                                                                                                                                                                                                                1. Grit Chambers
                                                                                                                                                                                                                  1. Horizontal Flow
                                                                                                                                                                                                                    1. Aerated Grit Chambers
                                                                                                                                                                                                                  2. Coagulation
                                                                                                                                                                                                                    1. Coagulant Chemicals
                                                                                                                                                                                                                      1. Aluminum Sulfate
                                                                                                                                                                                                                        1. Ferric Chloride
                                                                                                                                                                                                                          1. Polyaluminum Chloride
                                                                                                                                                                                                                          2. Rapid Mixing
                                                                                                                                                                                                                            1. Coagulation Chemistry
                                                                                                                                                                                                                              1. Jar Testing
                                                                                                                                                                                                                              2. Flocculation
                                                                                                                                                                                                                                1. Flocculator Design
                                                                                                                                                                                                                                  1. Mechanical Flocculators
                                                                                                                                                                                                                                    1. Hydraulic Flocculators
                                                                                                                                                                                                                                    2. Mixing Intensity
                                                                                                                                                                                                                                      1. Floc Formation
                                                                                                                                                                                                                                      2. Sedimentation
                                                                                                                                                                                                                                        1. Settling Theory
                                                                                                                                                                                                                                          1. Discrete Settling
                                                                                                                                                                                                                                            1. Flocculent Settling
                                                                                                                                                                                                                                            2. Clarifier Types
                                                                                                                                                                                                                                              1. Rectangular Clarifiers
                                                                                                                                                                                                                                                1. Circular Clarifiers
                                                                                                                                                                                                                                                  1. High-Rate Clarifiers
                                                                                                                                                                                                                                                  2. Sludge Removal
                                                                                                                                                                                                                                                  3. Filtration
                                                                                                                                                                                                                                                    1. Slow Sand Filtration
                                                                                                                                                                                                                                                      1. Mechanisms of Removal
                                                                                                                                                                                                                                                        1. Schmutzdecke Formation
                                                                                                                                                                                                                                                          1. Operation and Maintenance
                                                                                                                                                                                                                                                          2. Rapid Sand Filtration
                                                                                                                                                                                                                                                            1. Filter Media
                                                                                                                                                                                                                                                              1. Backwashing
                                                                                                                                                                                                                                                                1. Filter Design
                                                                                                                                                                                                                                                                2. Membrane Filtration
                                                                                                                                                                                                                                                                  1. Microfiltration
                                                                                                                                                                                                                                                                    1. Ultrafiltration
                                                                                                                                                                                                                                                                      1. Membrane Types
                                                                                                                                                                                                                                                                        1. Fouling and Cleaning
                                                                                                                                                                                                                                                                      2. Disinfection
                                                                                                                                                                                                                                                                        1. Chlorination
                                                                                                                                                                                                                                                                          1. Free and Combined Chlorine
                                                                                                                                                                                                                                                                            1. Chlorine Demand
                                                                                                                                                                                                                                                                              1. CT Concept
                                                                                                                                                                                                                                                                                1. Disinfection Byproducts
                                                                                                                                                                                                                                                                                  1. Trihalomethanes
                                                                                                                                                                                                                                                                                    1. Haloacetic Acids
                                                                                                                                                                                                                                                                                  2. Ozonation
                                                                                                                                                                                                                                                                                    1. Ozone Generation
                                                                                                                                                                                                                                                                                      1. Ozone Chemistry
                                                                                                                                                                                                                                                                                        1. Ozone Demand
                                                                                                                                                                                                                                                                                        2. UV Irradiation
                                                                                                                                                                                                                                                                                          1. UV Dose
                                                                                                                                                                                                                                                                                            1. UV Effectiveness
                                                                                                                                                                                                                                                                                              1. Lamp Types
                                                                                                                                                                                                                                                                                          2. Advanced Water Treatment Processes
                                                                                                                                                                                                                                                                                            1. Adsorption
                                                                                                                                                                                                                                                                                              1. Activated Carbon
                                                                                                                                                                                                                                                                                                1. Granular Activated Carbon
                                                                                                                                                                                                                                                                                                  1. Powdered Activated Carbon
                                                                                                                                                                                                                                                                                                  2. Adsorption Isotherms
                                                                                                                                                                                                                                                                                                    1. Freundlich Isotherm
                                                                                                                                                                                                                                                                                                      1. Langmuir Isotherm
                                                                                                                                                                                                                                                                                                      2. Carbon Regeneration
                                                                                                                                                                                                                                                                                                      3. Ion Exchange
                                                                                                                                                                                                                                                                                                        1. Resin Types
                                                                                                                                                                                                                                                                                                          1. Cation Exchange Resins
                                                                                                                                                                                                                                                                                                            1. Anion Exchange Resins
                                                                                                                                                                                                                                                                                                            2. Ion Exchange Process
                                                                                                                                                                                                                                                                                                              1. Regeneration
                                                                                                                                                                                                                                                                                                              2. Membrane Processes
                                                                                                                                                                                                                                                                                                                1. Reverse Osmosis
                                                                                                                                                                                                                                                                                                                  1. Membrane Selection
                                                                                                                                                                                                                                                                                                                    1. Operating Parameters
                                                                                                                                                                                                                                                                                                                      1. Concentrate Disposal
                                                                                                                                                                                                                                                                                                                      2. Nanofiltration
                                                                                                                                                                                                                                                                                                                        1. Selective Removal
                                                                                                                                                                                                                                                                                                                        2. Electrodialysis
                                                                                                                                                                                                                                                                                                                        3. Advanced Oxidation Processes
                                                                                                                                                                                                                                                                                                                          1. Hydroxyl Radical Generation
                                                                                                                                                                                                                                                                                                                            1. Ozone/Hydrogen Peroxide
                                                                                                                                                                                                                                                                                                                              1. UV/Hydrogen Peroxide
                                                                                                                                                                                                                                                                                                                                1. Fenton's Reagent
                                                                                                                                                                                                                                                                                                                                  1. Applications and Limitations
                                                                                                                                                                                                                                                                                                                                2. Water Distribution Systems
                                                                                                                                                                                                                                                                                                                                  1. Network Design
                                                                                                                                                                                                                                                                                                                                    1. Pipe Sizing
                                                                                                                                                                                                                                                                                                                                      1. Pressure Requirements
                                                                                                                                                                                                                                                                                                                                        1. Storage Requirements
                                                                                                                                                                                                                                                                                                                                        2. Hydraulic Modeling
                                                                                                                                                                                                                                                                                                                                          1. Network Analysis
                                                                                                                                                                                                                                                                                                                                            1. Computer Models
                                                                                                                                                                                                                                                                                                                                            2. Water Quality in Distribution
                                                                                                                                                                                                                                                                                                                                              1. Chlorine Residual Maintenance
                                                                                                                                                                                                                                                                                                                                                1. Biofilm Formation
                                                                                                                                                                                                                                                                                                                                                  1. Cross-Connection Control
                                                                                                                                                                                                                                                                                                                                                  2. System Components
                                                                                                                                                                                                                                                                                                                                                    1. Pumps and Pumping Stations
                                                                                                                                                                                                                                                                                                                                                      1. Storage Tanks
                                                                                                                                                                                                                                                                                                                                                        1. Valves and Appurtenances
                                                                                                                                                                                                                                                                                                                                                        2. Leak Detection and Control
                                                                                                                                                                                                                                                                                                                                                          1. Water Loss Assessment
                                                                                                                                                                                                                                                                                                                                                            1. Leak Detection Methods
                                                                                                                                                                                                                                                                                                                                                        3. Wastewater Engineering
                                                                                                                                                                                                                                                                                                                                                          1. Wastewater Sources and Characteristics
                                                                                                                                                                                                                                                                                                                                                            1. Domestic Sewage
                                                                                                                                                                                                                                                                                                                                                              1. Typical Composition
                                                                                                                                                                                                                                                                                                                                                                1. Flow Variations
                                                                                                                                                                                                                                                                                                                                                                  1. Strength Variations
                                                                                                                                                                                                                                                                                                                                                                  2. Industrial Wastewater
                                                                                                                                                                                                                                                                                                                                                                    1. Industry-Specific Characteristics
                                                                                                                                                                                                                                                                                                                                                                      1. Pretreatment Requirements
                                                                                                                                                                                                                                                                                                                                                                        1. Variability and Special Concerns
                                                                                                                                                                                                                                                                                                                                                                        2. Stormwater Runoff
                                                                                                                                                                                                                                                                                                                                                                          1. Pollutant Types
                                                                                                                                                                                                                                                                                                                                                                            1. First Flush Phenomenon
                                                                                                                                                                                                                                                                                                                                                                              1. Nonpoint Source Pollution
                                                                                                                                                                                                                                                                                                                                                                            2. Wastewater Collection Systems
                                                                                                                                                                                                                                                                                                                                                                              1. Sanitary Sewers
                                                                                                                                                                                                                                                                                                                                                                                1. Gravity Sewers
                                                                                                                                                                                                                                                                                                                                                                                  1. Force Mains
                                                                                                                                                                                                                                                                                                                                                                                    1. Design Criteria
                                                                                                                                                                                                                                                                                                                                                                                      1. Maintenance Issues
                                                                                                                                                                                                                                                                                                                                                                                      2. Storm Sewers
                                                                                                                                                                                                                                                                                                                                                                                        1. Design Principles
                                                                                                                                                                                                                                                                                                                                                                                          1. Separation from Sanitary Sewers
                                                                                                                                                                                                                                                                                                                                                                                            1. Best Management Practices
                                                                                                                                                                                                                                                                                                                                                                                            2. Combined Sewers
                                                                                                                                                                                                                                                                                                                                                                                              1. System Characteristics
                                                                                                                                                                                                                                                                                                                                                                                                1. Combined Sewer Overflows
                                                                                                                                                                                                                                                                                                                                                                                                  1. Control Strategies
                                                                                                                                                                                                                                                                                                                                                                                                2. Wastewater Treatment Levels
                                                                                                                                                                                                                                                                                                                                                                                                  1. Preliminary Treatment
                                                                                                                                                                                                                                                                                                                                                                                                    1. Screening
                                                                                                                                                                                                                                                                                                                                                                                                      1. Bar Screens
                                                                                                                                                                                                                                                                                                                                                                                                        1. Comminutors
                                                                                                                                                                                                                                                                                                                                                                                                        2. Grit Removal
                                                                                                                                                                                                                                                                                                                                                                                                          1. Grit Chambers
                                                                                                                                                                                                                                                                                                                                                                                                            1. Grit Classifiers
                                                                                                                                                                                                                                                                                                                                                                                                            2. Flow Equalization
                                                                                                                                                                                                                                                                                                                                                                                                            3. Primary Treatment
                                                                                                                                                                                                                                                                                                                                                                                                              1. Primary Sedimentation
                                                                                                                                                                                                                                                                                                                                                                                                                1. Sludge Collection
                                                                                                                                                                                                                                                                                                                                                                                                                  1. Scum Removal
                                                                                                                                                                                                                                                                                                                                                                                                                    1. Primary Effluent Quality
                                                                                                                                                                                                                                                                                                                                                                                                                    2. Secondary Treatment
                                                                                                                                                                                                                                                                                                                                                                                                                      1. Biological Processes
                                                                                                                                                                                                                                                                                                                                                                                                                        1. Aeration Systems
                                                                                                                                                                                                                                                                                                                                                                                                                          1. Secondary Clarification
                                                                                                                                                                                                                                                                                                                                                                                                                            1. Secondary Effluent Quality
                                                                                                                                                                                                                                                                                                                                                                                                                            2. Tertiary Treatment
                                                                                                                                                                                                                                                                                                                                                                                                                              1. Advanced Filtration
                                                                                                                                                                                                                                                                                                                                                                                                                                1. Nutrient Removal
                                                                                                                                                                                                                                                                                                                                                                                                                                  1. Disinfection
                                                                                                                                                                                                                                                                                                                                                                                                                                    1. Effluent Polishing
                                                                                                                                                                                                                                                                                                                                                                                                                                  2. Secondary Treatment Processes
                                                                                                                                                                                                                                                                                                                                                                                                                                    1. Activated Sludge Process
                                                                                                                                                                                                                                                                                                                                                                                                                                      1. Process Microbiology
                                                                                                                                                                                                                                                                                                                                                                                                                                        1. Process Control Parameters
                                                                                                                                                                                                                                                                                                                                                                                                                                          1. Mixed Liquor Suspended Solids
                                                                                                                                                                                                                                                                                                                                                                                                                                            1. Sludge Age
                                                                                                                                                                                                                                                                                                                                                                                                                                              1. Food to Microorganism Ratio
                                                                                                                                                                                                                                                                                                                                                                                                                                              2. Sludge Recycling
                                                                                                                                                                                                                                                                                                                                                                                                                                                1. Process Variations
                                                                                                                                                                                                                                                                                                                                                                                                                                                  1. Conventional Activated Sludge
                                                                                                                                                                                                                                                                                                                                                                                                                                                    1. Extended Aeration
                                                                                                                                                                                                                                                                                                                                                                                                                                                      1. Contact Stabilization
                                                                                                                                                                                                                                                                                                                                                                                                                                                    2. Trickling Filters
                                                                                                                                                                                                                                                                                                                                                                                                                                                      1. Media Types
                                                                                                                                                                                                                                                                                                                                                                                                                                                        1. Rock Media
                                                                                                                                                                                                                                                                                                                                                                                                                                                          1. Plastic Media
                                                                                                                                                                                                                                                                                                                                                                                                                                                          2. Loading Rates
                                                                                                                                                                                                                                                                                                                                                                                                                                                            1. Recirculation
                                                                                                                                                                                                                                                                                                                                                                                                                                                              1. Process Design
                                                                                                                                                                                                                                                                                                                                                                                                                                                              2. Rotating Biological Contactors
                                                                                                                                                                                                                                                                                                                                                                                                                                                                1. Design Principles
                                                                                                                                                                                                                                                                                                                                                                                                                                                                  1. Operation and Maintenance
                                                                                                                                                                                                                                                                                                                                                                                                                                                                    1. Process Performance
                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2. Sequencing Batch Reactors
                                                                                                                                                                                                                                                                                                                                                                                                                                                                      1. Fill Phase
                                                                                                                                                                                                                                                                                                                                                                                                                                                                        1. React Phase
                                                                                                                                                                                                                                                                                                                                                                                                                                                                          1. Settle Phase
                                                                                                                                                                                                                                                                                                                                                                                                                                                                            1. Decant Phase
                                                                                                                                                                                                                                                                                                                                                                                                                                                                              1. Idle Phase
                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2. Membrane Bioreactors
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                1. Membrane Integration
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  1. Process Advantages
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    1. Membrane Fouling
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2. Wastewater Ponds and Lagoons
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      1. Facultative Ponds
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        1. Anaerobic Ponds
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          1. Maturation Ponds
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            1. Aerated Lagoons
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2. Advanced Wastewater Treatment
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            1. Nutrient Removal
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              1. Nitrogen Removal
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                1. Biological Nitrification-Denitrification
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  1. Modified Ludzack-Ettinger Process
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    1. Bardenpho Process
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2. Phosphorus Removal
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      1. Biological Phosphorus Removal
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        1. Chemical Precipitation
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          1. Enhanced Biological Phosphorus Removal
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2. Solids Removal
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          1. Tertiary Filtration
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            1. Membrane Filtration
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              1. Dissolved Air Flotation
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2. Disinfection
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                1. Chlorination
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  1. Ozonation
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    1. UV Disinfection
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      1. Peracetic Acid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2. Sludge Management
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      1. Thickening
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        1. Gravity Thickening
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          1. Dissolved Air Flotation Thickening
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            1. Centrifugal Thickening
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              1. Gravity Belt Thickening
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2. Stabilization
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                1. Anaerobic Digestion
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  1. Process Microbiology
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    1. Digester Design
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      1. Gas Production
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        1. Process Control
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2. Aerobic Digestion
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          1. Process Design
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            1. Oxygen Requirements
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2. Lime Stabilization
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              1. Composting
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2. Dewatering
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                1. Centrifuges
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  1. Solid Bowl Centrifuges
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    1. Basket Centrifuges
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2. Belt Filter Presses
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      1. Process Description
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        1. Polymer Conditioning
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2. Filter Presses
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          1. Drying Beds
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2. Final Disposal and Reuse
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            1. Land Application
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              1. Agronomic Rates
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                1. Site Requirements
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2. Incineration
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  1. Multiple Hearth Furnaces
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    1. Fluidized Bed Incinerators
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2. Landfilling
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      1. Monofills
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        1. Co-disposal

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