Question 4021 of 234 · California Wastewater Operator Exam
The purpose of recirculation in a trickling filter plant is to
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Correct answer to question 4021
- C: pass the flow through the filter more than once and maintain a constant wetting rate
Explanation
Recirculation dilutes strong influent, keeps the slime moist and wet, and improves the contact between wastewater and biomass.
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