COD is the chemical oxygen demand which means the amount of oxygen to oxidize the organic and inorganic compounds ( these compounds are oxidized chemically )
BOD is the biological oxygen demand which means the amount of oxygen required by microbes to degrade the organic matter in water. It is mostly related to waste water.
BOD is the biological oxygen demand which means the amount of oxygen required by microbes to degrade the organic matter in water. It is mostly related to waste water.
