Wastewater Treatment Sizing Calculator
Size key components of an activated sludge wastewater treatment plant: aeration, clarifiers, aeration power, and sludge production.
Inputs
EPA 40 CFR 133: domestic influent 200–300 mg/L; secondary effluent limit ≤30 mg/L
EPA 40 CFR 133: secondary standard 30 mg/L monthly avg; advanced treatment <10 mg/L; reuse <5 mg/L
Results
BOD Loading
2,085 lb/day
Aeration Power
60 HP
How to Use This Calculator
- Enter population served and per-capita daily flow (gpd).
- Set infiltration and inflow allowance and target effluent quality.
- Review design flow, treatment unit sizing, and required hydraulic retention time.
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