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What is the relationship between bod and organic matter?
BOD (Biochemical Oxygen Demand) measures the amount of oxygen required by microorganisms to decompose organic matter in water. Organic matter contributes to BOD levels as it serves as a food source for microorganisms, leading to oxygen depletion in water bodies. Therefore, higher levels of organic matter can result in increased BOD, impacting water quality and aquatic life.
1 kg Sugar if dissolved in water what will be the BOD and COD?
BOD (biochemical oxygen demand) for sugar is typically low since it is easily consumed by microorganisms, while COD (chemical oxygen demand) is usually used to estimate the amount of organic pollutants in water. However, the specific BOD and COD values for 1 kg of sugar dissolved in water would depend on factors like temperature, microbial activity, and the presence of other substances in the water.
What is biological oxygen demand?
It determines the amount of dissolved oxygen that is consumed by aerobic biological microorganisms in water. It is measured by the amount of oxygen that is consumed per liter of sample during 5 days of incubation it is in milligrams.
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.
How much quantity of manganous sulphate to be dissolved in water to check the BOD?
The quantity of manganous sulphate added to a water sample for BOD testing is typically around 8 mg per liter of sample. This is used in conjunction with alkaline iodide azide solution to oxidize the organic matter present in the water sample, forming a brown precipitate. The amount of oxygen consumed during this process is then used to calculate the Biological Oxygen Demand (BOD) of the water sample.
Factor may affect BOD test?
The factors that may affect BOD test include: 1. The temperature at which the test is performed. 2. The amount of seeding done
What is the duration in days for BOD test for water analysis at 20 degree c?
It is usually of five days but it may either be 3 days depending upon the the BOD test.
What advantages and disadvantages of the COD test compared to the BOD test?
jamil jubo tahik letum
Why you use blank for the BOD test?
In the BOD (Biochemical Oxygen Demand) test, a blank is used to account for any oxygen demand exerted by materials other than the sample itself, such as the reagents and the dilution water. This ensures that the measured BOD reflects only the oxygen consumed by the biodegradable organic matter present in the sample. By subtracting the BOD of the blank from the sample's BOD, the results provide a more accurate assessment of the sample's organic pollution load.
How to calculate BOD value in a sample?
if unseeded, BOD = (D1-D2)/Pif seeded, BOD = ((D1-D2)-(B1-B2)f)/PD1 = DO of diluted seeded wastewaterD2 = DO of wastewater after incubationB1 = DO of diluted seed sampleB2 = DO of seed sample after incubationf = ratio of seed volume in seeded wastewater test to seed volume in BOD test on seedP = decimal fraction of wastewater sample used. (vol. of wastewater)/(vol. of dilution water plus wastewater)Maybe that helps
Why cod is greater than bod?
COD measures the amount of oxygen required to chemically oxidize (break down) organic and inorganic matter in a water sample, while BOD measures the amount of oxygen consumed by microorganisms during a biological process that breaks down organic matter. COD typically gives a higher value than BOD because it includes both the chemical and biological oxygen demand in the water sample.
Role of nitrifying bacteria in BOD test?
IN BOD test, Nitrifying bacteria do nitrification which is the process of biological conversion of ammonia into nitrate. Nitrifying bacteria does nitrification because that's the only reason they are termed as nitrifying bacteria otherwise they would be named as something else like if they would do esterification, they would be termed as esterifying bacteria
When was Bod - series - created?
Bod - series - was created in 1975.
When did Bod - series - end?
Bod - series - ended in 1984.
What is BOD and COD of spent wash?
COD=100 What is Bod
Point c is in the of BOD?
Adjacent Angle
What did bod plan to do with the card that held jacks name?
bod threw it
