A town of 30,000 send 0.5 m 3 of wastewater per person per day to the WWTP.

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A town of 30,000 send 0.5 m3 of wastewater per person per day to the WWTP. A conventional circular primary clarifier would be designed to have an average detention time of 2.0 hours and an average overflow rate of 40 m/day, whereas a high-rate clarifier would have an average overflow rate of 1,500 m/day.

a. What would be the dimensions of the conventional clarifier?

b. How much area would be saved by using a high-rate clarifier?

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