(b) Consider the following data for a completely mixed activated sludge system to treat wastewater from a community of 60000 persons: Sewage flow, Q = 9000 m³/day BOD = 360 mg/l (raw) Assume 30% BOD removal in primary settling and 90% in biological treatment. Winter temperature of mixed liquor = 10°C Yield, y = 0.6 k = 0.07/day (BOD, basis at 15°C) VSS MLSS=4000 mg/1, SS Adopt sludge age (0) = 10 days Determine F/M ratio and oxygen requirement uptake per day for this completely mixed activated sludge system. = 0.8
(b) Consider the following data for a completely mixed activated sludge system to treat wastewater from a community of 60000 persons: Sewage flow, Q = 9000 m³/day BOD = 360 mg/l (raw) Assume 30% BOD removal in primary settling and 90% in biological treatment. Winter temperature of mixed liquor = 10°C Yield, y = 0.6 k = 0.07/day (BOD, basis at 15°C) VSS MLSS=4000 mg/1, SS Adopt sludge age (0) = 10 days Determine F/M ratio and oxygen requirement uptake per day for this completely mixed activated sludge system. = 0.8
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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