Determine the effluent soluble substrate concentration

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Reference no: EM13306984

A complete-mix activated sludge process with recycle is being operated at the following conditions: Q = 1,650 m3/d; recycle = 0.60; So = 200 mg COD/L. Lab studies have shown that the rate constant associated with the process are as follows: k = 0.95 mg COD/mg VSS-day; Y = 0.48 mg VSS/ mg COD, half-saturation K = 85 mg COD/L; ke = 0.07 d-1. The average VSS concentration in the clarified effluent from the secondary clarifier has been found to be 15 mg/L; VSS in the influent is negligible. Determine the effluent soluble substrate concentration, total effluent COD concentration, waste flow rate from the underflow of the secondary clarifier, sludge age, and MLVSS if the solids concentration in the recycle is 5000 mg/L and the hydraulic detention time is 8 h.

Reference no: EM13306984

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