Size (Peak day design capacity, gallons per day) - 100,001 - 500,000 | 9 |
Pretreatment - Flow equalization basin | 1 |
Pretreatment - Mechanically cleaned screens | 2 |
Pretreatment - Fine screens, including microscreens | 3 |
Pretreatment - Grit removal | 2 |
Secondary Treatment - Activated sludge: Diffused or dispersed aeration | 10 |
Advanced Waste Treatment - Membrane filtration | 8 |
Sludge Thickening and Dewatering - Centrifuge | 6 |
Sludge Stabilization and Conditioning - Aerobic digestion | 5 |
Solids Disposal - Off-site disposal | 1 |
Disinfection - Ultraviolet light | 3 |