Question 2015 of 223 · California Water Treatment Operator Exam
The rate at which water is applied to a filter, expressed in gpm per square foot of surface area, is the
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Correct answer to question 2015
- B: filtration rate
Explanation
Filtration rate equals flow divided by filter area. Backwash rate uses the same units but applies to the cleaning flow.
More questions: Water Treatment Processes
- 2016As a filter run progresses, head loss across the filter normally
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- 2018What is the effect of backwashing a filter too long at a high rate?
- 2019What is surface wash used for in a filter backwash?
- 2020A filter has an area of 200 sq ft and a backwash rate of 15 gpm/sq ft. What is the backwash pumping rate?
- 2021A filter with an area of 400 sq ft produces 2.88 MGD. What is the filtration rate in gpm/sq ft?