A two-stage trickling filter plant treats 291.7 m3/h of municipal wastewater that has a BOD5 of 200 mg/L. The two filters have equal dimensions (depth = 1.68 m; diameter = 21.3 m), and each has a recycle ratio of 1.0. If the primary clarifier removes 33% of the BOD,
(a) Find the BOD5 of the final effluent using the NRC equation.
(b) Calculate the hydraulic loading and the organic loading for each filter.