Question 2020 of 234 · California Wastewater Operator Exam
Which analysis shows how much organic matter is converted to carbon dioxide and water regardless of biological action?
Exactly one answer is correct.
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Correct answer to question 2020
- D: Chemical oxygen demand (COD)
Explanation
COD uses a strong chemical oxidant, so it measures nearly all organic matter and gives a result in hours. BOD measures only what microorganisms can use in five days.
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