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A 3 diameter biotower has been designed to treat sewage from 22,000 PE.Influent BOD = 250mg/l...

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Civil Engineering

A 3 diameter biotower has been designed to treat sewage from22,000 PE.Influent BOD = 250mg/l and wastewater flow through theprimary clarifier removes 35 percent of the BOD and the flows intothe biotower the constant r andom media n= 0.44, recycle ratio = 2and operating temperature =2500c.

a determine the reaction rate constant k25 if theexisting BOD =50mg/l

b what would be the biotower effluent at 200c if therecycle ratio is increase to 4

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