Question 2020 of 223 · California Water Treatment Operator Exam
A filter has an area of 200 sq ft and a backwash rate of 15 gpm/sq ft. What is the backwash pumping rate?
Exactly one answer is correct.
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Correct answer to question 2020
- D: 3,000 gpm
Explanation
Backwash flow = area x rate = 200 x 15 = 3,000 gpm. Adding the numbers gives 215 and dividing gives 13.
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