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The amount of oxygen that the microorganisms to degrade organic substances contained in the water (in 5 days at a temperature of 20° c).BOD values are in units of mg/l or mg oxygen per 1 litre of BOD value water sachen (read that b-o) is taken as the value to indicate the quality of the water which is used in the water treatment industry. If the value of the high BOD shows that water, it needs lots of oxygen to the microorganisms degrading organic substances in water. Shows that the water quality is not good, as opposed to low-water show that BOD values are better quality.In addition to the value of BOD and COD values used, the pH value and DO to measure the quality of the water, too.
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