Problem

The municipal wastewater flow from a town is 1890 m3/d with an average BOD of 280 mg/l. As...

The municipal wastewater flow from a town is 1890 m3/d with an average BOD of 280 mg/l. Assuming 35% BOD removal in the primary, calculate the size required for one single-stage trickling filter. Use a depth of 2.1 m, a BOD loading of 480 g/m3 • d, and mini­mum required hydraulic loading. Compute the BOD concentration in the effluent at 20°C and 15°C, using the NRC formula and temperature correction relationship in Eq. (12.25)

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