Question 9003 of 234 · California Wastewater Operator Exam
Influent BOD is 210 mg/L and effluent BOD is 18 mg/L. What is the percent removal?
Exactly one answer is correct.
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Correct answer to question 9003
- C: 91.4%
Explanation
Percent removal = (in - out) / in x 100 = (210 - 18) / 210 x 100 = 91.4%. Dividing by the effluent value or reporting the effluent fraction are typical mistakes.
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