3. This problem involves mass balance on BOD5. An activated sludge waste watertreatment plant is to be designed for a city of 5000 persons, and primary clarification is to be

used prior to the aeration tank. The BOD5 contribution is0.08 kg/cap-d, the primary clarifier removes 30% of the influent BOD5, and the space or volumetric loading for the bioreactor allowed by the state regulatory agency is 0.XX kg BOD5/m³-d. Determine the activated sludge reactor basin volumo in m3 Note that primary treatment precedes secondary treatment; consider units asa guide to solving this problem! Also note that a more typical aeration tank loading rate is 0.64 kg BOD5/m³-d.