Question: A pre-anoxic MLE activated sludge process has the following influent wastewater characteristics and is operated with an anoxic volume of 500 m3 and MLVSS of

A pre-anoxic MLE activated sludge process has the following influent wastewater characteristics and is operated with an anoxic volume of 500 m3 and MLVSS of 2000 mg/L at 20 oC. Given that influent flow rate = 12,000 m3/d, influent soluble BOD (rbCOD) is 60 mg/L, and the nitrate production based on the influent flow rate (i.e., NOx) is 30 mg/

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