How does BOD differ from COD?

Open in App

Solution

BOD:
Biochemical Oxygen Demand or Biological Oxygen Demand is a measurement of the amount of dissolved oxygen (DO) that is used by aerobic microorganisms when decomposing organic matter in water.
COD:
Chemical Oxygen Demand (COD) is the amount of oxygen that is consumed when a water sample is chemically oxidized.
BOD
COD
BOD is the most important and widely used environmental index for monitoring and measuring organic pollutants in wastewater.
The COD test is often used to monitor water treatment plant efficiency.
2. It determines the total amount of dissolved oxygen (DO) compelled for the microbial oxidation of carbonaceous organic material under specified conditions. 2. It is a measure of water and wastewater quality.
3. BOD has the widest application in waste treatment plants and in evaluating the removal efficiency of such treatment systems. 3. This test is based on the fact that a strong oxidizing agent, under acidic conditions, can fully oxidize almost any organic compound to carbon dioxide.

Suggest Corrections