Question 2021 of 223 · California Water Treatment Operator Exam
A filter with an area of 400 sq ft produces 2.88 MGD. What is the filtration rate in gpm/sq ft?
Exactly one answer is correct.
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Correct answer to question 2021
- D: 5.0 gpm/sq ft
Explanation
2,880,000 gal/day / 1,440 min/day = 2,000 gpm; 2,000 / 400 = 5.0 gpm/sq ft. Skipping the day to minute conversion gives a wrong magnitude.
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