Biology · MICROBES IN HUMAN WELFARE

What does BOD refer to in the context of sewage treatment?

A
Biological Oxidation Demand, representing total dissolved oxygen in sewage.
B
Biochemical Oxygen Demand, representing oxygen consumed if all organic matter in one liter of water is oxidized by bacteria.
C
Biochemical Oxygen Deficit, representing residual oxygen after microbial respiration.
D
Bacterial Oxygen Demand, representing the rate of oxygen production by flocs.

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Correct answer · Option B

Biochemical Oxygen Demand, representing oxygen consumed if all organic matter in one liter of water is oxidized by bacteria.

BOD refers to the amount of the oxygen that would be consumed if all the organic matter in one liter of water were oxidised by bacteria.