Question 1018 of 223 · California Water Treatment Operator Exam
Reservoir turnover in the fall or spring can cause treatment problems mainly because it
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Correct answer to question 1018
- A: mixes low-oxygen bottom water containing iron, manganese and organics into the intake zone
Explanation
Bottom water in a stratified reservoir is often anoxic and rich in dissolved metals and nutrients. When the layers mix, the intake can suddenly draw poorer-quality water.
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