difference between bod and cod

But BOD test takes five days. What are the main differences of C-BOD vs.

Chemical Oxygen Demand Cod In Water

The key difference between BOD and COD is that the BOD is the oxygen demand of microorganisms to oxidize organic matter in the water under aerobic conditions while the COD is the oxygen demand to oxidize all the pollutants in the water chemically.

. On the other hand Chemical Oxygen Demand COD refers to the amount of oxygen needed to break down the pollutants chemically. N-BOD means Nitrogenous Biochemical Oxygen Demand BOD5 typically includes C-BOD and N-BOD unless one or the other is inhibited. Moreover since COD measures the amount of oxygen necessary to oxidize total pollutants COD value is always greater than the BOD value.

COD or Chemical Oxygen Demand is the total measurement of all chemicals organics in-organics in the water whereas BOD is a measure of the amount of oxygen that require for the bacteria to. Quality of a given water sample depends on some variable factors. Biochemical oxygen demand BOD is the amount of oxygen required by the microorganisms to break down the organic materials whereas chemical oxygen demand COD is the amount of oxygen required to break down the organic material via oxidation.

Dissolved oxygen in the water body depends on the temperature sediment and the oxygen input and output. For most industrial process waste water community sewage drains and even some hetrogeneous sources CODBOD ratio has been found to be in a defined range and hence COD result gives more or less BOD value range for such identifiable waste water. BOD- Biochemical Oxygen Demand is supposed to measure the amount of food or organic carbons that bacteria can oxidize.

What is the relation between COD and BOD. COD is usually a measurement of chemicals and the. A series of recognized standards are developed using KHP prior to finishing the COD test.

BOD analysis is performed to determine what effect dirty. Another difference between BOD and COD is that it is possible to complete the COD test within a few hours in the lab. The fundamental distinction between BOD and COD is that BOD refers to the quantity of oxygen consumed by bacteria during the aerobic decomposition of organic matter whereas COD refers to the amount of oxygen necessary for the chemical oxidation of total organic matter in water.

To expand a bit on each of these. There is a strong correlation between COD and BOD however COD analysis is a much faster and more accurate method. BOD and COD are correlated as both are the methods with the.

There are two completely different tests-a C-BOD test and a BOD5 test. Biochemical Oxygen Demand BOD is the measurement of the amount of oxygen consumed by aquatic microorganisms to decompose or to oxidize the organic matter. The BOD concentration value is multiplied by the dilution factor if the wastewater sample requires dilution.

The key difference between BOD and COD is that the BOD is the oxygen demand of microorganisms to oxidize organic matter in the water under aerobic conditions while the COD is the oxygen demand to oxidize all the pollutants in the water chemicallyQuality of a given water sample depends on some varia. COD or Chemical Oxygen Demand is the total measurement of all chemicals in the water that can be oxidized. There are too many terms and it is getting confusing to me.

The BOD concentration mgL is calculated by subtracting the final DO value from the starting DO reading. COD is the amount of oxygen required to chemically breakdown the pollutants whereas BOD is the amount of oxygen required to do this biologically through micro-organisms. Also in COD a complete breakdown of pollutants takes place.

TOC or Total Organic Carbon is the measurement of organic carbons. The Difference Between BOD and COD. Although COD and BOD have a high association COD analysis is a.

The main difference between BOD and COD is that BOD is the amount of oxygen which is consumed by bacteria while decomposing organic matter under aerobic conditions whereas COD is the amount of oxygen required for the. The only relation between COD BOD is - COD BOD. On the other hand Biological Oxygen Demand BOD and Chemical Oxygen Demand COD are both measures of the amount of oxygen required to biologically or chemically breakdown the pollutants within a known amount of water.

The difference between BOD and COD is.

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