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What is Biochemical Oxygen Demand (BOD)?

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asked Sep 10, 2017 in Chemistry by sforrest072 (157,439 points) ● 60 ● 409 ● 934

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answered Sep 10, 2017 by Rohit Singh (61,782 points) ● 35 ● 133 ● 356
selected Sep 10, 2017 by sforrest072
 
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Biochemical oxygen demand is the amount of oxygen required by bacteria to decompose organic matter in a certain volume of sample of water. Clean water would have a BOD value of less than 5 ppm, whereas highly polluted water has a BOD value of 17 ppm or more.

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