highly polluted water could have a BOD value of ?
ramya01:
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 robust surrogate of the degree of organic pollution of water.
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1
BOD is 'Biological Oxygen Demand'.It is a amount of oxygen needed by arobic organisms in order to break down the organic matter present in water body/sample at a given temperature.
This is a general indicator or measure of water pollution. It is also used to determine the effectiveness of water treatment.
BOD is reported either in ppm or mg/L values. Very less or unpolluted water bodies can have BOD anywhere below 1mg/L. But in case of polluted water bodies, due the large amounts of organic matter presence, oxygen required is also high. Thus BOD of polluted bodies can be anywhere from 80 and more.
(FYI - BOD level of 1-2 ppm is determined as very good, and 6-9 ppm is considered as moderately polluted)
This is a general indicator or measure of water pollution. It is also used to determine the effectiveness of water treatment.
BOD is reported either in ppm or mg/L values. Very less or unpolluted water bodies can have BOD anywhere below 1mg/L. But in case of polluted water bodies, due the large amounts of organic matter presence, oxygen required is also high. Thus BOD of polluted bodies can be anywhere from 80 and more.
(FYI - BOD level of 1-2 ppm is determined as very good, and 6-9 ppm is considered as moderately polluted)
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4
Highly polluted water can have a BOD value of 17 ppm or more. While BOD 3 to 5 show clean water 6 to 9 measure is considered as slightly contaminated.
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