Question 3013 of 234 · California Wastewater Operator Exam
Which problem is most likely to result from leaving sludge in a primary clarifier too long?
Exactly one answer is correct.
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Correct answer to question 3013
- D: Septic sludge that gasifies and floats to the surface
Explanation
Anaerobic conditions in the sludge blanket make gas bubbles that lift sludge to the surface and can cause odor. Pumping sludge before it turns septic prevents this.
More questions: Preliminary and Primary Treatment
- 3014A primary clarifier's overflow rate is calculated by dividing
- 3015If the flow to a clarifier increases and nothing else changes, the surface overflow rate will
- 3016Scum collected from a primary clarifier is normally sent to
- 3017Which is the best indicator that a primary clarifier is being operated properly?
- 3018Pumping primary sludge too infrequently will most likely cause
- 3019A flow equalization basin is used to