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1 kg Sugar if dissolved in water what will be the BOD and COD?
0.7 kg of BOD and 1.4 kg of COD
What is TOD BOD in water quality measurement?
There are three OD's used Total Oxygen Demand (TOD), Chemical Oxygen Demand (COD) and Biological Oxygen Demand (BOD) They all measure the amount of oxygen that would be required to consume organic material in the water, BOD is the lowest (usually) as it measures demand from microbes eating easily digested organics (sugars etc), COD measures the demand from all other organics (alcohols etc) measured by digesting the material in strong chemical oxidants, and TOD is the total of the two. Oxygen demand is important to know in waste handling as reducing the oxygen in receiving stream can harm fish and other aquatic life.
What are the main sources of error in a BOD test?
1. dilution error 2.blame the test sample 3.poor maintenance of bottles(cleaning)
What method of body composition assessment involves passing the body through a magnetic field?
MRI, which is not practical and is very expensive. The only people getting tested via MRI are subjects of a research project. The BOD POD has magnets to lock the door but you do not pass through a magnetic field. BOD PODs are available at many colleges and universities in Exercise Science or Nutrition departments.
What is the structural formula for diisopropyl acetylene?
(isopropyl)x2 = (2-methylpropane)x2 --> [C(CH3)2] x2 (center) Acetylene --> C(triple bond)C (H3C)2C(triple bond)C(CH3)2
What is the relationship between bod and do?
BOD (biological oxygen demand) is a measure of the amount of oxygen needed bymicrobes to break down the organic matter in a sample of water. DO (dissolved oxygen) is the amount of oxygen dissolved in the water. When BOD is high, it means there's a lot of organic contaminants in the water, and the microbes are working overtime to break it down. They use up oxygen while doing this, so when BOD is high, DO is low. When the microbes finish breaking down the organic contaminants, their numbers drop from lack of food (a lower BOD). DO usually goes back up again
What is meant by BOD loading rate?
BOD loading rate is the amount of organic matter added in water or waste water for example sewage water
What are the relationship between cod chemical oxygen demand and bod5 biological oxygen demand what does the ratio of bod cod or cod bod means?
BOD is inversely proportional to COD
BOD and COD definitions and relationship?
BOD is a measure of, the amount of oxygen that bacteria will consume while decomposing organic matter under aerobic conditions. Biochemical oxygen demand is determined by incubating a sealed sample of water for five days and measuring the loss of oxygen from the beginning to the end of the test. Samples often must be diluted prior to incubation or the bacteria will deplete all of the oxygen in the bottle before the test is complete.COD does not differentiate between biologically available and inert organic matter, and it is a measure of the total quantity of oxygen required tooxidize all organic material into carbon dioxide and water. COD values are always greater than BOD values, but COD measurements can be made in a few hours while BOD measurements take five days.
What is the different between biochemical oxygen demand and biological oxygen demand?
Oxygen Demand -The amount of oxygen require to oxidize an organic materialBiochemical (Biological) Oxygen Demand (BOD) -The amount of oxygen required to oxidized any organic matter present in the water by microbes present in the water. Usually representin the easily "digestible" organics.Chemical Oxygen Demand (CO) - The amount of oxidants experessed as oxygen required to consume all organics in a water sampleTotal Oxygen Demand (TOD) the sum of COD and BODBiological Oxygen demand is the oxygen required to oxidized only organic matter by micro organisms (it is basically a prototype of actual process happening in treatment plant) while chemical oxygen demand is the oxygen consumed to oxidize all organic and inorganic matter and it employ chemicals to do this process that why it is way more fast then BOD experiment .
What is the basic difference between BOD incubater and Bacteriological incubater?
I want the basic difference of BOD incubater and Bacteriological incubater? We are used BOD incubater as a bacteriological incubater?
What are biochemical oxygen demands?
BOD is the oxygen necessary for living organisms in a sample of water for the degradation of organic compounds.
Why you use BOD5?
BOD tests the amount of oxygen that is used up in a sample due to organic matter (bacteria). The results tell us the quality of organic matter the sample. 5 days is the best time because after five days some of the bacteria changes and becomes nitrifying (feeds off nitrogen instead of oxygen). It's almost always used to test wastewater.
Role of nitrifying bacteria in BOD test?
Nitrifying bacteria play a crucial role in the BOD (Biochemical Oxygen Demand) test. They are responsible for oxidizing ammonia to nitrate in the presence of oxygen. This helps determine the amount of biodegradable organic matter in a sample, as the oxygen is consumed during this process. By measuring the decrease in dissolved oxygen, the BOD test provides an indication of the organic pollution level in water.
What has the author Catherine M Johnson written?
Catherine M. Johnson has written: 'The emperical relationship between BOD and COD, and BOD and TOC, established for the non-industrial season final effluent, Post Point Pollution Control Plant, Bellingham, Washington' -- subject(s): Effluent quality
What is the difference between BOD and COD?
1. COD or Chemical Oxygen Demand is the total measurement of all chemicals in the water that can be oxidized BOD- Biochemical Oxygen Demand is supposed to measure the amount of food (or organic carbons) that bacteria can oxidize. 2. COD is usually measured and the test is simple and easy to perform with the right equipment and can be done in 2 hours. BOD usually takes 5 days 3. Permissible limit of COD =250 to 500 ppm Permissible limit for BOD = 30 mg/L
Why cod is greater than bod?
Type your answer here... It's not. Typically, COD is greater than BOD. The COD test is used primarily as an operational control because it takes only a matter of hours, compared to 5 days for the BOD test.
