Measure of the amount of oxygen that can be consumed by reactions in a solution
In environmental chemistry, 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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In environmental chemistry, the chemicaloxygendemand (COD) is an indicative measure of the amount of oxygen that can be consumed by reactions in a measured...
Biochemical oxygendemand (also known as BOD or biological oxygendemand) is an analytical parameter representing the amount of dissolved oxygen (DO) consumed...
actual oxygendemand can be measured experimentally and is called the biochemical oxygendemand (BOD). Biological oxygendemandChemicaloxygendemand Carbonaceous...
methods are commonly used: mainly the Biochemical OxygenDemand (BOD) and the ChemicalOxygenDemand (COD).: 36 Management of sewage includes collection...
organic matter (measured as biochemical oxygen demand (BOD) and chemicaloxygendemand (COD)). The treated effluent may be suitable for discharge to surface...
undergoes a rapid decrease in volume. Meanwhile, the leachate's chemicaloxygendemand increases with increasing concentrations of the more recalcitrant...
An oxygen concentrator is a device that concentrates the oxygen from a gas supply (typically ambient air) by selectively removing nitrogen to supply an...
Oxygen is a chemical element; it has symbol O and atomic number 8. It is a member of the chalcogen group in the periodic table, a highly reactive nonmetal...
solids or soluble organic matter (measured as biochemical oxygendemand and chemicaloxygendemand). Similar to natural wetlands, constructed wetlands also...
residence time or sludge age of 1 to 5 days. This means that the chemicaloxygendemand (COD) removed is relatively little and the effluent is therefore...
dissolved oxygen, conductivity, oxygen reduction potential (ORP), turbidity, and Secchi disk depth. Sampling of water for physical or chemical testing can...
environment. It is used to test:[citation needed] Biochemical OxygenDemand (BOD) ChemicalOxygenDemand (COD) eutrophication coating identification It can also...
strips. Many photographic solutions have high chemical and biological oxygendemand (COD and BOD). These chemical wastes are often treated with ozone, peroxide...
parameters that are quantified are pH, BOD,: 102 chemicaloxygendemand (COD),: 104 dissolved oxygen (DO), total hardness, nutrients (nitrogen and phosphorus...
alternative to the classical but more lengthy biological oxygendemand (BOD) and chemicaloxygendemand (COD) tests traditionally reserved for assessing the...
effluent is generated. This effluent has chemicaloxygendemand (COD) of 1,50,000 PPM and biochemical oxygendemand (BOD) of 60,000 PPM and even more. This...
inorganic molecule with the chemical formula O 3. It is a pale blue gas with a distinctively pungent smell. It is an allotrope of oxygen that is much less stable...
and energy and produces wastewater with a high concentration of chemicaloxygendemand (COD), among other contaminants. Recent studies underline coagulation...
measures of water quality include dissolved oxygen (DO), chemicaloxygendemand (COD), biochemical oxygendemand (BOD), total dissolved solids (TDS), pH,...
such acidity levels, temperature, odour, and biochemical oxygendemand and chemicaloxygendemand. The magnitude of waste management issues depends on how...
CFU - Colony-forming unit COD - Controlled open defecation COD - Chemicaloxygendemand CoP - Community of practice CP - Contact precipitation, see precipitation...
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