Estimate the required air flow rate for the new activated sludge plant at Camp Verde (Pr...

Estimate the required air flow rate for the new activated sludge plant at Camp Verde (Problems 16-3 , 16-8 , 16-11 , and 16-14 ). Use the following assumptions in preparing the estimate:

Problems 16-14

Estimate the mass of oxygen to be supplied (kg/d) for the new activated sludge plant at Camp Verde ( Problems 16-3 , 16-8 , and 16-11 ). Assume that BOD₅ = rbsCOD and that it is 68% of the bCOD.

Problems 16-11

Estimate the mass of sludge to be wasted each day from the new activated sludge plant at amp Verde ( Problems 16-3 and 16-8 ).

Problems 16-8

Determine the return sludge concentration ( X '_r ) that results in the maximum return sludge flow rate for Camp Verde’s proposed activated sludge plant described in Problem 16-3 . Also estimate the mass flow rate of sludge wasting. Use the following assumption:

MLVSS fraction of MLSS = 0.70

Problem 16-3

The town of Camp Verde has been directed to upgrade its primary WWTP to a secondary plant that can meet an effluent standard of 25.0 mg/L BOD₅ and 30 mg/L suspended solids. They have selected a completely mixed activated sludge system for the upgrade. The existing primary treatment plant has a flow rate of 2,506 m³/d. The effluent from the primary tank has a BOD₅ of 240 mg/L. Using the following assumptions, estimate the required volume of the aeration tank: