CBSE Class 12-science Answered
Write the differences between BOD and COD.
Asked by Topperlearning User | 19 Sep, 2016, 06:15: AM
Expert Answer
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. |
Answered by | 19 Sep, 2016, 08:15: AM
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