Question 6021 of 223 · California Water Treatment Operator Exam
The chlorine demand of a water is 2.3 mg/L. How much chlorine must be fed to leave a 1.0 mg/L residual?
Exactly one answer is correct.
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Correct answer to question 6021
- B: 3.3 mg/L
Explanation
Dose = demand + residual = 2.3 + 1.0 = 3.3 mg/L. Subtracting gives 1.3.
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