Question

The highest Biological Oxygen Demand (BOD) can be expected in ____________ ?

• A. A running river
• B. A running polluted river
• C. Treated Municipal wastewater
• D. Untreated Municipal wastewater

Answer 1

Answer:

D. Untreated Municipal wastewater

BOD is the amount of dissolved oxygen needed by aerobic biological organisms in a body of water to break down organic material present in a given water sample at certain temperature over a specific time period. For running rivers, it would be minimum as the water is less polluted and for Untreated Municipal wastewater it would be maximum.