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Estimate the volume of air to be supplied (m3/d) for an activated sludge system with a...

Estimate the volume of air to be supplied (m3/d) for an activated sludge system with a

flow of 0.25 m3/sec, net waste activated sludge production of 340 kg/day VSS, and an

influent soluble BOD5 of 74 mg/L. Assume that soluble BOD5 is 58% of BODL, BOD5 in

the aeration tank is 14 mg/L, and that the oxygen transfer efficiency is 9%. Density of air

is 1.185 kg/m3, and air has 23.2% oxygen.

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