Question 4026 of 234 · California Wastewater Operator Exam
Extended aeration plants typically operate with
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Correct answer to question 4026
- D: a low F/M ratio and long sludge age
Explanation
Extended aeration holds the sludge for long periods (MCRT of 20 to 40 days), giving stable operation and little excess sludge, but it needs more energy.
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