Problem
Consider a lake 108 m2 of surface area for which the only source of phosphorus is the effluent from a wastewater treatment plant. The effluent flow rate is 0.4 m3/s and has a phosphorus concentration of 10 g/m3. The lake is also fed by a stream of 20 m3/s flow with no phosphorus. If the phosphorus settling rate is 10 m/y, estimate the average steady-state concentration of P in the lake. The depth of the lake is 1 m.
The response should include a reference list. Double-space, using Times New Roman 12 pnt font, one-inch margins, and APA style of writing and citations.