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A wastewater treatment plant receives an average of 3.0 MGD of wastewater flow. Two rectangular primary...

A wastewater treatment plant receives an average of 3.0 MGD of wastewater flow. Two rectangular primary clarifiers operating in parallel will treat the flow. If the length of each clarifier is four times its width, the width is 20 ft, and the depth is 10 ft, determine:

a) the overflow rate in gpd/ft2.

b) the detention time of each clarifier (in days).

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