Question 6004 of 223 · California Water Treatment Operator Exam

A plant treats 3.2 MGD with a chlorine dose of 1.8 mg/L using 12.5 percent sodium hypochlorite. About how many pounds of the hypochlorite solution are needed per day?

Exactly one answer is correct.

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Correct answer to question 6004

  • A: 384 lb/day

Explanation

Chlorine needed = 3.2 x 1.8 x 8.34 = 48.0 lb/day. Solution = 48.0 / 0.125 = 384 lb/day. Multiplying by 0.125 gives 6.0, and 48 ignores the strength.

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