Size (Peak day design capacity, gallons per day) - 50,001 - 100,000 | 4 |
Pretreatment - Flow equalization basin | 1 |
Pretreatment - Mechanically cleaned screens | 2 |
Secondary Treatment - Activated sludge: Diffused or dispersed aeration | 10 |
Secondary Treatment - Secondary clarifiers | 4 |
Sludge Thickening and Dewatering - Belt filter press, plate-and-frame press, or vacuum filter | 8 |
Sludge Stabilization and Conditioning - Aerobic digestion | 5 |
Solids Disposal - Off-site disposal | 1 |
Disinfection - Liquid and powdered hypochlorites | 3 |
Disinfection - Dechlorination with dechlorination agents other than gas | 3 |
Effluent Discharge - Plant pumping of effluent | 2 |