Keywords |
  • Sustainable development


The 5 day biochemical oxygen demand, or BOD5, is water quality parameter.

BOD5 measures the quantity of biodegradable organic matter contained in water. This biodegradable organic matter is evaluated using the oxygen consumed by the microorganisms involved in natural purification mechanisms.

This parameter is expressed as the milligrams of oxygen needed to break down the organic matter contained in a litre of water over five days.


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