Using a spreadsheet program you have written, plot a graph of the final effluent BOD5 of...

Using a spreadsheet program you have written, plot a graph of the final effluent BOD₅ of the two-stage filter described in Problem 17-4 as a function of the influent flow rate. Assume that the ratio of recirculation flow to influent flow remains constant. Use flow rates of 0.02, 0.03, 0.04, 0.05, 0.06, 0.07, 0.08, 0.09, and 0.10 m³/s for the influent.

Determine the concentration of the effluent BOD₅ for the two-stage trickling filter described below. The wastewater temperature is 17^oC. Assume the NRC equations apply.