An activated sludge plant is to be designed to treat a wastewater flow of Am3/ day. The wastewater contains BmgBOD/L and Cmg-VSS/L of inert solids. The target MLVSS concentration is Dmg/L, and you expect the operation sludge volume index (SVI) to be Eml/g-suspended solids. Your firm uses a safety factor of F. Y=0.655g MLVSS /g BOD, max=2.85day1,kd=0.205day1, and Ks=20.5mg/L, fd=0.800g VSS lod/g VSS X, Mass suspended solids =1.200 Mass volatile suspended solids. Determine the following: a) the HRT and the SRT of the acration tank b) the mass of activated sludge to be removed from the system each day c) The return flow rate (Qr) and the waste flow rate (Qi) A=45,300.0,B=226.,C=16.8,D=3355.,E=105.,F=75