Distinguish Between
Distinguish between BOD and COD.
Advertisement Remove all ads
Solution
BOD | COD |
1.1t means the oxygen demand of bio-degradable pollutants only. |
it measures the oxygen demand for bio-degradable pollutants along with non-biodegradable pollutants. |
2.Less stable measurement method as it uses micro-organism which are susceptible to pH, temperature and other variable in the water. | More stable measurement method as it uses potassium dichromate which oxidises regardless of water condition. |
3. Siow process. It takes 5 days. | Fast process. It takes 2-3 hours. |
4.BOD values are generally less than COD values. | COD values are generally greater than BOD values. |
5.`BOD =(DO_b DO_i)xx(" Volume of undiluted sample")/(" Volume of diluted sample.")` | `COD = ((V_1-V_2 ) xx N xx 8000) /Y` |
Concept: Bod - Definition and Significance
Is there an error in this question or solution?
Advertisement Remove all ads
APPEARS IN
Advertisement Remove all ads
Advertisement Remove all ads