Chemical oxygen demand (COD),
Definition of Chemical oxygen demand (COD):
The amount of oxygen required to completely oxidize organic compounds in the volume of water, which is used as a measure of water quality, is allocated as COD.
Standard method for indirectly measuring the amount of contamination (which cannot be biologically oxidized) in a water sample.
Chemical oxygen demand testing methods are based on the chemical decomposition of organic and inorganic pollutants dissolved or suspended in water. The results of the Chemical Oxygen Demand test show the amount of dissolved oxygen in the water (expressed in ppm or milligrams per liter of water). The higher the demand for chemical oxygen, the higher the amount of contamination in the sample. The Biological Oxygen Demand (■■■) method is used for impurities that can be oxidized biologically.
Meaning of Chemical oxygen demand (COD) & Chemical oxygen demand (COD) Definition
