The amount of oxygen needed to oxidize reactive chemicals in a water system, typically determined by a standardized test procedure. COD is used to estimate the amount of a pollutant in an effluent. Co [..]

Measure of the amount of oxygen, divided by the volume of the system, required to oxidize the organic (and inorganic) matter in wastewater using a chemically oxidizing agent. In practice, it is usuall [..]

a measurement of the organic content of waste material related to the amount of oxygen required for it to be stabilized.

Definition A method for testing water quality by measuring the amount of organic compounds, or pollution, in a sample of water taken from a lake or river. COD measures the amount of oxygen consumed by [..]

The quantity of oxygen equivalent to the amount of oxidising agent consumed in oxidising the majority of organic matter present in wastewaters. Does not distinguish between the organic matter liable to be degraded readily by biological means and the more intractable forms. Can include the oxygen demand of some inorganic substances such as sulphides [..]

The amount of oxygen

The quantity of oxygen required for the complete oxidation of organic chemical compounds in water; used as a measure of the level of organic pollutants in natural and waste waters.

Amount of oxidizable compounds (composed of carbon and hydrogen) present in the water. Since an effluent-treatment system removes most of the organic material that would be degraded naturally in the r [..]

the amount of oxygen required for the chemical oxidation of organics in a liquid; a chemical test that determines the oxygen equivalent of the amount of organic matter oxidizable by potassium dichroma [..]

A measure of the oxygen required to oxidize all compounds, both organic and inorganic, in water.

A measure of the oxygen required to oxidize all compounds, both organic and inorganic, in water.

A measure of the oxygen required to oxidize all compounds, both organic and inorganic, in water.

A quantitative measure of the amount of oxygen required to oxidize all organic compounds in a unit volume on waste water - non-biodegradable as well as the BOD. The COD level can be determined more readily than BOD, but this measurement does not indicate how much of the waste can be decomposed by biological oxidation.

A measure of the oxygen-consuming capacity of organic matter present in wastewater. COD is expressed as the amount of oxygen consumed from a chemical oxidant in mg/L during a specific test. Results ar [..]

An indirect measure of the amount of oxygen used by inorganic and organic matter in water. The measure is a laboratory test based upon a chemical oxidant, and therefore does not necessarily correlate with biochemical oxygen demand. Chronic Health Effect

A quantitative measure of the amount of oxygen required to oxidize all organic compounds in a unit volume on waste water - non-biodegradable as well as the BOD. The COD level can be determined more re [..]

The quantity of oxygen used to oxidise matter. Expressed in mg/L.

A quantitative measure of the amount of oxygen required to oxidize all organic compounds in a unit volume on waste water – non-biodegradable as well as the BOD. The COD level can be determined more re [..]

It is commonly used to indirectly measure the amount of organic compounds in water. Most applications of COD determine the amount of organic pollutants found in surface water (e.g. lakes and rivers) o [..]

The weight of oxygen taken up by the organic matter in a sample of water , expressed as parts per million of oxygen taken up from a solution of boiling potassium dichromate in two hours. The test is u [..]

Index of water  pollution measuring the mass concentration of oxygen consumed by the chemical breakdown  of organic and inorganic matter.

 a measure of the amount of oxygen (mg/L) required to chemically oxidise the organic matter present in a sample of water. chemical: