Question 2005 of 234 · California Wastewater Operator Exam

The five-day BOD test measures

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Correct answer to question 2005

  • C: the oxygen used by microorganisms to break down organic matter in a sample

Explanation

BOD5 is the dissolved oxygen consumed during five days of incubation at 20 degrees Celsius. It estimates the biodegradable organic strength of wastewater.

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