Question 6010 of 223 · California Water Treatment Operator Exam

A clearwell holds 250,000 gallons and the plant flow is 1.2 MGD. What is the detention time?

Exactly one answer is correct.

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Correct answer to question 6010

  • D: 5.0 hours

Explanation

Detention time = volume / flow = 250,000 / 1,200,000 = 0.208 day, and 0.208 x 24 = 5.0 hours. The 0.21 value is in days.

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