Question 2002 of 223 · California Water Treatment Operator Exam
Which chemical is most commonly used as a primary coagulant in drinking water plants?
Exactly one answer is correct.
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Correct answer to question 2002
- D: Aluminum sulfate (alum)
Explanation
Alum and ferric salts are the common coagulants. Hypochlorite is a disinfectant and hydrofluosilicic acid is used for fluoridation.
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