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Find maximum flow rate of wastewater that can be maintained in a aerated lagoon of volume 1 million gallon to treat the wastewater (having

Find maximum flow rate of wastewater that can be maintained in a aerated lagoon of volume 1 million gallon to treat the wastewater (having BOD of 450 mg/l) at 25C so that the BOD of treated stream does not exceed 90 mg/l. The reaction coefficient k is 0.308 d' at 25C, and the value of is 1.06.

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