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Answer required urgently 2 A) Design aeration tank (activated sludge process) and surface aerators for given data: Flow: 500m3/hr inlet BOB:150mg/L outlet BOD:30mg/L F/M: 0.lgBOD/gMLSS/d

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2 A) Design aeration tank (activated sludge process) and surface aerators for given data: Flow: 500m3/hr inlet BOB:150mg/L outlet BOD:30mg/L F/M: 0.lgBOD/gMLSS/d MLSS: 2300mg/L Depth: 3.5m Width: 2.2 Depth Oxygen requirement: 2kgOO2/kg BOD consumed Oxygen transfer capacity of surface aerators: 1.2kgOO2/HP/hr

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