BOD is the amount of oxygen that the bacteria used in the digestion of biodegradable organic matter
under anaerobic conditions. From this process, bacteria can get energy for growth in the next. BOD
is indicative of contamination of waste water. When the discharge of sewage into the river. Used to control contamination of streams. In the river
because of the BOD indicates the degree of contamination of water immediately. It is also used in the design of wastewater treatment systems.
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