Decoding BOD - Biochemical Oxygen Demand
BOD is an abbreviation commonly used in environmental science and water quality testing. It stands for Biochemical Oxygen Demand.
What is Biochemical Oxygen Demand?
Biochemical Oxygen Demand or BOD refers to the amount of oxygen required by aerobic microorganisms to decompose organic matter in water samples.
It is used as an indicator to assess the levels of organic pollution in water bodies. Higher BOD indicates greater pollution.
How is BOD Measured?
BOD is measured by:
Taking a sample of water from the source
Incubating it under controlled conditions for 5 days
Measuring dissolved oxygen levels before and after incubation
Calculating the difference - this is the BOD
The standard unit for measuring BOD is milligrams of oxygen consumed per liter of water sample (mg/L).
Importance of BOD
BOD testing is important because:
It provides an index to determine water quality.
BOD levels give a direct measure of organic pollutants in water.
It indicates the ability of water bodies to support aquatic life.
Changes in BOD show progress of water treatment procedures.
Environmental agencies routinely monitor BOD to assess water health.
In summary, Biochemical Oxygen Demand or BOD is a key parameter used to calculate organic pollution in water bodies. Understanding what BOD stands for and how it is tested helps evaluate water quality and set standards for ecological conservation.
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