Problem

A trickling filter has a diameter of 20 m and a depth of 2.5 m. It is operated with a dire...

A trickling filter has a diameter of 20 m and a depth of 2.5 m. It is operated with a direct recirculation ratio of 1.0, and the influent sewage flow rate is 3 ML/d. Influent BOD to the primary tank is 200 mg/L, and the BOD removal efficiency in that tank is 35 percent. Compute both the hydraulic load and the organic load on the trickling filter.

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