The effluent from the secondary clarifier in an effluent treatment plant has to meet the standard of BOD5 of 30 mg/l and 30 mg/l suspended solids. The effluent flow rate from the primary treatment process is 0.03 m3/s and this effluent has a BOD5 of 250 mg/l. with the following information, calculate the required volume of the aeration tank. BOD5 of the suspended solid is 80% of the allowable suspended solids concentration