Advantages and disadvantages of bod and cod. Difference Between BOD and COD 2022-11-01

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BOD, or Biological Oxygen Demand, and COD, or Chemical Oxygen Demand, are two measures of the amount of oxygen required to break down organic matter in water. These measures are used to assess the quality of water and to identify sources of pollution. In this essay, we will discuss the advantages and disadvantages of BOD and COD.

One advantage of BOD is that it is a measure of the amount of oxygen consumed by microorganisms in the process of breaking down organic matter. This means that BOD can be used to assess the health of an ecosystem, as high BOD levels can indicate an excess of organic matter and a potential threat to the ecosystem.

Another advantage of BOD is that it can be used to identify sources of pollution. For example, if BOD levels in a water body are higher than normal, it could be an indication that there is excess organic matter present, possibly from a nearby sewage treatment plant or agricultural runoff.

One disadvantage of BOD is that it can be time-consuming to measure. The process involves collecting a water sample, incubating it for five days, and then measuring the amount of oxygen consumed by the microorganisms during this time. This can make it difficult to get timely BOD readings in situations where quick action is needed, such as in response to an oil spill.

Another disadvantage of BOD is that it only measures the oxygen demand of biodegradable material, meaning that it does not take into account non-biodegradable pollutants like heavy metals or chemicals. This can make it less useful for identifying certain types of pollution.

COD, on the other hand, measures the amount of oxygen required to break down both biodegradable and non-biodegradable organic matter. This means that COD is a more comprehensive measure of the oxygen demand of organic matter in water.

One advantage of COD is that it can be measured more quickly than BOD, as the process involves a chemical reaction rather than a biological one. This makes it a useful tool for identifying pollution in real-time.

However, one disadvantage of COD is that it is not as sensitive to changes in the ecosystem as BOD. This means that COD readings may not accurately reflect the health of an ecosystem, as they do not take into account the presence of microorganisms or their role in breaking down organic matter.

In conclusion, BOD and COD are both useful measures of the amount of oxygen required to break down organic matter in water. BOD is a measure of the oxygen demand of biodegradable material and is useful for assessing the health of an ecosystem and identifying sources of pollution. However, it can be time-consuming to measure and does not take into account non-biodegradable pollutants. COD measures the oxygen demand of both biodegradable and non-biodegradable organic matter and can be measured more quickly than BOD. However, it is not as sensitive to changes in the ecosystem and may not accurately reflect the health of an ecosystem.

Biochemical Oxygen Demand

advantages and disadvantages of bod and cod

So, this is the key difference between BOD and COD. Monitoring COD levels enables wastewater management companies and facilities to decide on the best methods for water treatment. Effect of temperature on oxygen saturation at 1 atmospheric pressure i. CBOD Seed Correction was calculated by doing the same on CBOD Seed bottles. COD analysis will measure the equivalent amount of oxygen that is required to chemically oxidise organic compounds in water. The microorganisms use organic matter as a food source through oxidation which oxygen is consumed.

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Advantages and distadvantages of biochemical oxygen... Free Essays

advantages and disadvantages of bod and cod

The test is not suited for on-line, continuous measurement. One reason to identify filaments is to determine the filaments characteristics and then determine the type present. Some want equipment, technology or process information. If dilution is required, then serial dilutions are performed and 2 mL of the diluted sample are added to the corresponding vial. COD: The permissible limit of COD is 250 to 500 ppm. From an operations perspective, time lag is the biggest drawback to BOD also referred to as Biological Oxygen Demand analysis.

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What Are The Advantages And Disadvantages Of The Cod Test Compared To Bod?

advantages and disadvantages of bod and cod

Determining organic matter present in a water body and its effect on the ecosystem and aesthetics of the water body is an integral part of water quality management. Industries that discharge wastewater into municipal sanitary waterways or sewage are facing strict regulations on levels of BOD. Figure 01: BOD Test Therefore, the biological oxygen demand is the amount of dissolved oxygen required by aerobic organisms to breakdown organic materials, to obtain energy for their metabolism. Total organic carbon is a good parameter to measure and actually a more accurate indication of some of the pollutants that cause the most problems than a BOD test. After the primary treatment in which the floating debris is removed by sequential filtration and sedimentation, the primary effluent is passed to aeration tanks where it is constantly agitated and the air is pumped into it.

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BOD Vs COD

advantages and disadvantages of bod and cod

We are in the process of developing new courses for our ""Online E-University" in order to meet the needs of our global customers that cannot travel to our public classes. Moreover, TOC is a measure of all carbon both organic and inorganic , rather than the oxygen that is reduced by these species. COD does not measure the amount of oxygen consumed by acetates present in the water sample What is the principle of COD test? This was not due to drowning, but due to the effects of the pollution in the river. High-Temperature Combustion Method 5310 C. We are trying to get the concept across that one of these test methods is using biology, microbiology to be exact. Closed Reflux, Colorimetric Method 1, 2 1 EPA Approved Method 2 Most popular method Can I use my COD results to predict my BOD? If the cause is known, then a correction can be made to alleviate problems.

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Difference Between BOD and COD

advantages and disadvantages of bod and cod

There are different methods that can be used when it comes to measuring COD. One of the main limitations of the COD test is its inability to differentiate between biodegradable and biologically inert organic matter on its own. One of these is phosphate, which when present in high amounts increases the BOD of water. Chemical Oxygen Demand COD 1% Silver Sulphate in Sulphuric Acid conc. We have developed a full set of Basic training, Advanced training, Filamentous Identification the Easy Way as well as custom training CD's Manuals.

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Body Composition

advantages and disadvantages of bod and cod

Check out our new Services. They include: Journal of the American Medical Association, American Journal of Human Biology, Human Kinetics Journal, American Journal of Clinical Nutrition, Journal of Medical Science and Sports Exercise, Physiology Review, European Journal of Clinical Nutrition, Journal of Applied Physiology, British Journal of Preventive and Social Medicine, NY Academy of Science, Journal of Gerontology MUSCLE METRICS WANTS YOU TO KNOW THAT FIT IS THE NEW THIN! Pollution is a major contributor to increasing the BOD of water bodies. Chlorination is only a quick fix. Liquid-Liquid, Partition-Gravimetric Method 1 5520 C. What makes Marilyn stand out from other chefs is her unique approach to cooking. But, COD does not measure the oxygen consumption of acetate.

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The Advantages and Disadvantages of COD Ā» Fulfillmen

advantages and disadvantages of bod and cod

The duration of the test is normally 5 days. It helps in connecting with people all across the world. The COD test is not a direct substitute for the BOD test; however, a ratio usually can be correlated between the two tests. Not only that, COD always high in comparison to BOD since COD is a measurement of a complete breakdown of pollutants, unlike BOD in which biochemical breakdown is often not complete as a chemical breakdown. COD does not measure the amount of oxygen consumed by acetates present in the water sample What are the advantages of COD? For most people a complete understanding of the standard methods required to accurately complete critical wastewater analytical tests is not necessary. The COD test has the advantage of not being subject to interference from toxic materials, as well as requiring only two or three hours for test completion, as opposed to five days for the BOD test.


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What is chemical oxygen demand (COD)?

advantages and disadvantages of bod and cod

See also What Trout Is A Hybrid? Test Procedure BOD: BOD is determined by incubating sealed water under a specific temperature sample for five days and measuring the loss of oxygen from the beginning of the test. . The continuous air supply is maintained. Our team of Technical Representatives will assist in installation, repairs, and preventative maintenance of your systems. Flexibility By allowing employees to use their own devices, they are able to work anywhere without requiring other tools to access work related files. At the same time, our industrial society produces a wide range of pollutants and environmental challenges, all of which can produce serious health and biodiversity outcomes if left untreated. CODā€¦Hazardous Waste Along with the potassium dichromate in 50% sulfuric acid solution, pre-prepared COD vials also contain silver sulfate as a catalyst and mercuric sulfate to eliminate chloride interference.


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