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Explain the flow rate from the primary clarifiers

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Reference no: EM13658254

An industrial wastewater effluent is treated utilizing a complete mix activated sludge process with a two secondary clarifiers following it. The effluent from the clarifiers contains 60 mg/L VSS volatile suspended solids. Explain the flow rate from the primary clarifiers is 60,000m3/day and a biomass production rate of 0.5 kg/m3-d. The return VSS concentration is 12,000 mg/L. The specific of the VSS is 1.0.

Part a) For a mixed liquor volatile suspended solids (MLVSS) of 1800 mg/L, Explain what is the total return solids flow rate?

Part b) Presume the return solids flow rate is 5,000m3/d and the MLVSS is 2200 mg/L, explain what is the wasted solids flow rate from each of the secondary clarifiers?

Part c) Explain what solids must be wasted daily to maintain the MLVSS at constant concentration?

Reference no: EM13658254

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