Part One: COD - What is Chemical Oxygen Demand?

摘要

COD is a direct measure of the amount of matter in an effluent that reacts (is oxidised) with potassium dichromate.COD is a representation of the maximum amount of oxygen that may be required to neutralise the oxidisable pollutants in an effluent.COD is commonly utilised to represent the amount of organic pollutants in an effluent.COD is a reliable, reproducible, fast, convenient and affordable analytical technique.COD is a good indicator of the overall polluting power of an effluent and is therefore an extremely important parameter in wastewater analysis and effluent treatment processes.