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What is meant by Biochemical Oxygen Dema...

What is meant by Biochemical Oxygen Demand (BOD)? What is its significants?

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The amount of oxygen required by bacteria to break down the organic matter present in a certain volume of a sample of water is called Biochemical Oxygen Deman (BOD) The amount of BOD in the water is a measure of the amount of organic material in the water, in terms of hou much oxygen will be required to break it down biologically.
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