ETP Basic parameter Calculation/unit.pptx

ETP Parameter unit calculation

1. SOR (m3/m2) = flow rate/day Surface Area (m2) WOR (m3/m) = flow rate/day Length of weir (m) SLR (Kg/Day/m2) = TSS (Kg)/Day Surface area (m2) 1 g=1000mg 1kg= 1000000 mg

2. Length of Weir, ft =  X Weir Diameter = 3.14 X 72 ft = 226 ft

3. Surface Area, ft 2 =  r 2 For circular clarifier SOR , gpd /ft 2 = For Rectangular Surface Area, ft 2 = 35 ft X 9 ft = 315 ft 2

4. F/M Ratio= BOD or COD per day in Aeration basin MLVSS or MLSS Sludge Age= MLSS in Aeration Tank (kg) TSS in aeration tank Influent (kg/day) MLSS (mg/L) = [(A - B)*1,000,000] ÷ [Volume of sample in Liters] SVI (Ml/g) = SVQ*1000 MLSS MLVSS=MLSS*Percent of volatile solids