Question 3014 of 234 · California Wastewater Operator Exam
A primary clarifier's overflow rate is calculated by dividing
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Correct answer to question 3014
- C: the flow in gallons per day by the surface area in square feet
Explanation
Surface overflow rate is flow divided by surface area (gal/day/ft2). It indicates how quickly water rises in the tank, and typical values are 600 to 1,200 gpd/ft2 at average flow.
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