Chemical oxygen demand | COD analysis |science classes | hindi | English Subtitles

the chemical oxygen demand (COD) is an indicative measure of the amount of oxygen that can be consumed by reactions in a measured solution. It is commonly expressed in mass of oxygen consumed over volume of solution which in SI units is milligrams per litre (mg/L). A COD test can be used to easily quantify the amount of organics in water. The most common application of COD is in quantifying the amount of oxidizable pollutants found in surface water (e.g. lakes and rivers) or wastewater. COD is useful in terms of water quality by providing a metric to determine the effect an effluent will have on the receiving body, much like biochemical oxygen demand (BOD).

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Sludge volume index::
https://youtu.be/SmCGLl_WoA8

Food and mass ratio::
https://youtu.be/uuYHFK_Gvo0

ETP Q & A || sawal jawab::
https://youtu.be/BS8p-obHcpM

Biochemical oxygen demand::
https://youtu.be/URvWDDHF8NY

Standard procedure for analysis of mlvss and mlss::
https://youtu.be/dgTWus-U8Q0

Standard procedure for Analysis of Dissolve Oxygen::
https://youtu.be/qKbL0nLRDBw

Standard procedure for chemical oxygen demand::
https://youtu.be/-oz7MPvzId4

effluent treatment plant :: https://youtu.be/rZv2bwwmwMc

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