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what is biochemical oxydend demand how it is detrmined for a pond? what is DO

what is biochemical oxydend demand
how it is detrmined for a pond?
what is DO

Grade:12

1 Answers

Arun
25763 Points
3 years ago

Biochemical oxygen demand (BOD, also called biological oxygen demand) is the amount of dissolved oxygen needed (i.e., demanded) by aerobic biological organisms to break down organic material present in a given water sample at certain temperature over a specific time period. The BOD value is most commonly expressed in milligrams of oxygen consumed per litre of sample during 5 days of incubation at 20 °C and is often used as a surrogate of the degree of organic pollution of water.

BOD can be used as a gauge of the effectiveness of waste water treatment plants.

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