Write the differences between BOD and COD.
Differences between BOD and COD
BOD | 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. |