5 Simple Techniques For BOD test procedure
5 Simple Techniques For BOD test procedure
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The greatest problem within the BOD test pertains to time, because the holding time for any BOD sample is forty eight hours from collection. For BOD to work appropriately there need to be a adequate population of nutritious microbes in the bottle.
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Biological oxygen desire is often used in wastewater therapy crops as an index in the diploma of organic and natural air pollution in water.
BOD measures the level of oxygen eaten by microorganisms for the process of decomposition in the organic issues while in the drinking water bodies.
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When BOD is low, the dissolved oxygen present from the water human body is significant. This means that the h2o is read more considerably less polluted by natural and organic matter.
Dependency on microbial activity: The precision of BOD measurements is reliant about the activity of microorganisms current while in the sample. Components including nutrient availability and microbial wellbeing can influence the reliability from the test results.
Therefore, the method should be adopted meticulously, and needs to be executed continually from daily and analyst to analyst. Potential glitches is usually encountered in Each and every of the next techniques inside the BOD test.
Contamination: Contamination from exterior sources throughout sample selection, managing, or Investigation can introduce further organic make a difference or microorganisms, resulting in artificially elevated BOD test values.
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Large BOD levels are attributable to substantial intake of dissolved oxygen by microorganisms. It implies which the h2o is very polluted with natural subject.
Biochemical oxygen demand suggests the level of organic and natural pollution existing in an aquatic ecosystem.