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An activated sludge process based wastewater treatment has a settled sewage flow rate of 1.8 million litres per day (MLD). The aeration tanks are

An activated sludge process based wastewater treatment has a settled sewage flow rate of 1.8 million litres per day (MLD). The aeration tanks are three in number and designed for a food to microorganism (F/M) ratio of 0.4kgBOD/kg MLSS/day. The BOD of raw wastewater is 300 mg/L and 40% of BOD is removed in the primary settling tank. The MLSS in the aeration tank should be 3000mg/L. Calculate the volumetric organic loading rates?

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