Advantages and disadvantages of bod and cod. BOD Analyzer 2022-12-26

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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.

BOC vs COD

advantages and disadvantages of bod and cod

MANTECH has a variety of biochemical oxygen demand BOD systems to best suit the needs of your laboratory. Biological Products: Bioaugmentation products for Wastewater applications in Papermills, Refineries, Chemical, Tanneries, Municipalities, Textiles, Steel, Agriculture, Animal feedlot, Gun Powder plant, Food and Beverage- Dairy Products, Orange Juice factory, Wineries, Cookie factory, Vegetable processing plant, Meat packing, Barbecue Restaurant, Aquaculture, Ornamental Ponds for algae control, CAFO, Nursing homes, Military, Campgrounds, Universities, Regulatory agencies Lab Services: Filamentous Identification Lab Service. There are other treatments like flocculation, coagulation, the addition of chemicals like hydrogen peroxide that oxidized organic waste. For lagoon pond treatment systems or other situations where this may occur, it is recommended that a Carbonaceous Biochemical Oxygen Demand CBOD or Inhibited BOD should be reported and used in place of 5-day Biochemical Oxygen Demand BOD5. Offering trade credit will give you a competitive edge over your business rivals.

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BOD Vs COD

advantages and disadvantages of bod and cod

Nitrifying bacteria consume nitrogenous materials compounds with reduced forms of nitrogen and add to the oxygen demand of the wastewater. The lesser we contaminate the water bodies lesser is its biochemical oxygen demand levels. Note: If multiple wastewater samples are being run, at least 10% of samples are duplicated. BOD measurement permits an estimate of the waste strength in terms of the amount of dissolved oxygen required to break down the wastewater. This is also known as oxidizability in the European Union.

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Difference Between BOD and COD

advantages and disadvantages of bod and cod

Soxhlet Extraction Method 1 EPA Approved Method APHA. This effluent from aeration tanks goes into settling tanks for bacterial flocs to settle down and after which they are treated with anaerobic microbes and physicochemical processes before discharge in water bodies. The molecular oxygen present in water is either a byproduct of photosynthesis occurring in aquatic plants or is atmospheric oxygen in the dissolved state. In this wastewater training you'll learn COD is a quick and easy measurement to get a snap in time picture of what is going on in the system, and with trending, long term predictions can be made and monitor and control of the process at the wastewater treatment plant can be optimized and controlled. The most impressive part of MANTECH is the irrefutable customer service. BOD and COD methods differ from TOC because they measure the amount of oxygen that is depleted by organic species in water. This new methodology can be used for the same applications where the traditional TOC methods have been employed.


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

advantages and disadvantages of bod and cod

System controllers and computer monitors are not included in the dimensions described below. It is used as an index in sewage or wastewater treatment plants. Yes, chlorine is widely known as an excellent oxidant and is extensively used for a long time to purify water, oxidize chemicals in wastewater, destroy organisms in swimming pools and wastewater, etc. Local weather services typically use a corrected barometric pressure reading, which corrects the reading to sea level. It can also require back-up software, antivirus software, or specific password protection policies be implemented.

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What is chemical oxygen demand (COD)?

advantages and disadvantages of bod and cod

Justin Shelton is a professional cook. BOD measures the amount of oxygen utilizing by aerobic microorganisms to breakdown organic matter in water. COD uses strong chemicals to oxidize organic matter. BYOD has become a trend in the corporate environment. The results are generally expressed as the amount of oxygen taken by one litre sample diluted with aerated water when incubated at 20 degree for five days.

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Understanding Laboratory Wastewater Tests: I. ORGANICS (BOD, COD, TOC, O&G)

advantages and disadvantages of bod and cod

The MANTECH Automated BOD system is an accurate and efficient method to process BOD and CBOD. It is the traditional test for establishing the concentration of organic matter in wastewater and it works on the principle that if sufficient oxygen is available then aerobic microorganisms in water will continue to decompose until all the waste is consumed. Moreover, since COD measures the amount of oxygen necessary to oxidize total pollutants, COD value is always greater than the BOD value. Must be removed prior to the analysis. Her recipes are simple, delicious, and healthy — perfect for anyone who wants to cook like a pro! 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. I ran an anaerobic digester facility for a juice manufacturer where the COD of the influent could easily increase by 10 or even 100 fold in a matter of minutes.


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Biochemical Oxygen Demand

advantages and disadvantages of bod and cod

It is usually seeded with the type of bacteria found in municipal plants. Almost all wastewater treatment plants are required to measure one of these three items as a measure of the pollution value in the water. The freshwater fishes like Catla and rohu do not survive at these concentrations. Just because a lab says they perform BOD does not necessarily mean they perform the procedures the exact same way. But why do we wait five days? Pollution is a major contributor to increasing the BOD of water bodies.

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Why Do We Need To Remove Bod And Cod?

advantages and disadvantages of bod and cod

We must keep our greed away and strive towards conservation of water bodies and reduction of BOD levels in them. Standard Methods does not specify a requirement for an adjustable barometer for dissolved oxygen measurements or biological oxygen demand testing. Without this detailed analysis and information, it can be challenging if not completely impossible to take the correct action. Some analyzers use a combination or mixture of technology. Bring your own device BYOD is the practice that allow employees using personal devices for work-related purposes. Generally, COD is preferred to BOD for process control measurements because results are more reproducible and are available in just two hours rather than five days. Testing for BOD involves incubating a sealed water sample at 20C for five days, followed by measuring the difference in oxygen content before and after incubation.

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