The town of Gatesville has been directed to upgrade its primary WWTP to a secondary plant that can meet an effluent standard of 30.0mgL1BOD5 and 30.0mgL1 suspended solids. They have selected a completely mixed activated sludge system. Assuming that the BOD5 of the suspended solids may be estimated as equal to 63% of the suspended solids concentration, estimate the required volume of the aeration tank. The following data are available from the existing primary plant. Existing plant effluent characteristics Flow=0.150m3s1BOD5=84.0mgL1 Assume the following values for the growth constants: Ks=100mgL1BOD5;m=2.5 day 1; kd=0.050 day 1;Y=0.50mg VSS mg1BOD5 removed