Engineering, 25.11.2021 14:00, uwunuzzles

A municipal WW activated sludge facility has the following characteristics: Flow = 7.2 million liters per day Influent BOD5 = 200 mg/L Aeration basin volume = 3,000m^3 2 circular clarifiers (each with diameter = 20m and depth =4m) Return activated sludge flow rate = 3.5 million liters per day per clarifier MLVSS concentration = 3,500 mg/L Effluent VSS is negligable Sludge VSS concentration = 6,800 mg/L. Required:
Determine the daily volume of sludge in liters per day (L/day) that must be removed to maintain a solids residence time of 5 days.

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A municipal WW activated sludge facility has the following characteristics: Flow = 7.2 million liter...