Write the differences between BOD and COD.
Differences between BOD and COD
|1. BOD refers to Biochemical Oxygen Demand.||1. COD refers to Chemical Oxygen Demand.|
|2. BOD is the oxygen required for the decomposition of unit mass of organic matter by microbes.||2. COD is the oxygen required for the chemical oxidation of unit mass of reduced organic and inorganic matter.|
|3. It is comparatively lower.||3. It is comparatively higher.|
|4. Involves only aerobic decomposer microbes.||4. Involves chemical oxidants.|