Computer · Environmental Engineering
A 3.0 ml sample of raw sewage is diluted to 300 ml. The dissolved oxygen (D.O.) concentration of the diluted sample at the beginning of the test was 8 mg/l. After a 5-day incubation at 20°C, the D.O. concentration was 5 mg/l. The BOD of the raw sewage is:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1100 mg/l
- 2200 mg/l
- 3300 mg/l✓
- 4400 mg/l
Correct answer
300 mg/l
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