Type your answer here... It's not. Typically, COD is greater than BOD. The COD test is used primarily as an operational control because it takes only a matter of hours, compared to 5 days for the BOD test.
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COD measures the amount of oxygen required to chemically oxidize (break down) organic and inorganic matter in a water sample, while BOD measures the amount of oxygen consumed by microorganisms during a biological process that breaks down organic matter. COD typically gives a higher value than BOD because it includes both the chemical and biological oxygen demand in the water sample.
because bod contains only biodegradable but whereas cod includes both biodegradable and non biodegradable that is the reason why cod is larger than bod
greater than
Kills the bod.
This depends on pH, temperature, oxygen concentration (TOD, BOD, COD), concentration of many impurities, radioactivity, water flow speed, biology of the water, etc.
a tonne is greater than a kilo.
BOD, or biochemical oxygen demand, is a measure of the amount of dissolved oxygen needed by microorganisms to break down organic matter in water. It is often used as an indicator of the level of organic pollution in a body of water, with higher BOD values indicating greater pollution levels. High BOD values can lead to decreased oxygen levels in water, which can harm aquatic life.