Using the following assumptions, determine the solids retention time, cell wastage flow...

Using the following assumptions, determine the solids retention time, cell wastage flow rate, and the return sludge flow rate for the Turkey Run WWTP ( Problem 16-21 ). Assume:

Problem 16-21

Two activated sludge aeration tanks at Turkey Run are operated in series. Each tank has the following dimensions: 7.0 m wide by 30.0 m long by 4.3 m effective liquid depth. The plant operating parameters are as follows: