What is TOC and COD?
The COD effectively is a measure effort the amounts of electrons available in the organic carbon for reduction of oxygen to water. TOC is the amount of carbon. The ratio is therefore a measure for the degree of reduction of the carbon compounds.
How is COD calculated from TOC?
The study concludes that TOC can be reliably used for the generic replacement of both COD (COD=49.2+3.00*TOC) and BOD5 (BOD5=23.7+1.68*TOC) in influent wastewaters but only for COD (COD=7.25+2.99*TOC) in final effluents.
Which is greater TOC or COD?
COD testing is simple and less sensitive in lower concentrations, whereas TOC requires instrumental analysis but much more precise. Therefore, it is advisable to use TOC for following biodegradation reactions of compounds at low concentration (below COD 10-20 mg/L).
What is difference between BOD COD and TOC?
COD or Chemical Oxygen Demand is the total measurement of all chemicals in the water that can be oxidized. TOC or Total Organic Carbon is the measurement of organic carbons. BOD- Biochemical Oxygen Demand is supposed to measure the amount of food (or organic carbons) that bacteria can oxidize.
What is water TOC?
TOC is short for Total Organic Carbon, which within water treatment is referring to the total amount of organic carbon found in water.
What does COD mean in water treatment?
Chemical oxygen demand
5 Chemical oxygen demand (COD) The COD is the estimate of oxygen required for the portion of organic matter in wastewater that is subjected to oxidation and also the amount of oxygen consumed by organic matter from boiling acid potassium dichromate solution.
What is TOC in water treatment?
What is TOC oxygen?
Dr. Werner Arts, LAR Process Analysers AG The most popular sum parameter in waste water analysis are the BOD (biochemical oxygen demand), COD (chemical oxygen demand), TOD (total oxygen demand) and TOC (total organic carbon). The TOC reflects the organic pollution on the basis of a direct carbon determination.
Is COD greater than BOD?
COD is normally higher than BOD because more organic compounds can be chemically oxidised than biologically oxidised. This includes chemicals toxic to biological life, which can make COD tests very useful when testing industrial sewage as they will not be captured by BOD testing.
What is the purpose of TOC?
TOC is the measure of the level of organic molecules or contaminants in purified water. TOC is an analytic technique that helps organizations understand whether the water they are using is pure enough for their processes. All water, no matter how pure, contains some carbon materials.
Why is TOC important?
Applications. TOC is the first chemical analysis to be carried out on potential petroleum source rock in oil exploration. It is very important in detecting contaminants in drinking water, cooling water, water used in semiconductor manufacturing, and water for pharmaceutical use.
What COD stands for?
Cash on Delivery
Cash on Delivery (COD)