Question 2017 of 223 · California Water Treatment Operator Exam

Which event is the main trigger for backwashing a filter?

Exactly one answer is correct.

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Correct answer to question 2017

  • C: Reaching terminal head loss, turbidity breakthrough or a set run time

Explanation

Filters are backwashed on head loss, effluent turbidity or elapsed time, whichever comes first. This keeps the filter within permit performance.

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