Question 2009 of 223 · California Water Treatment Operator Exam
Floc that is small and cloudy (pin floc) and does not settle well may indicate
Exactly one answer is correct.
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Correct answer to question 2009
- B: an incorrect coagulant dose or poor mixing
Explanation
Pin floc usually points to a coagulant dose that is too low or too high, wrong pH or inadequate mixing. A jar test helps determine the best dose.
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