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Biochemical Oxygen Demand (BOD)

   

Added on  2023-04-22

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Running Head: BIOCHEMICAL OXYGEN DEMAND (BOD)
Biochemical oxygen demand (BOD)
Name
Institution
Biochemical Oxygen Demand (BOD)_1

BIOCHEMICAL OXYGEN DEMAND (BOD) 2
Abstract
The primary objective of this experiment determines the BOD of a water sample. In this case,
BOD is a critical water quality parameter to quantify. BOD indicates the measure of broke down
oxygen devoured by microorganisms amid the deterioration of natural issue for example and is
determined as the underlying DO focus short the last DO fixation over a given timeframe. Water
samples with high Bod can be referred to as polluted.
Biochemical Oxygen Demand (BOD)_2

BIOCHEMICAL OXYGEN DEMAND (BOD) 3
Objective
To determine BOD in a sample of water.
Theory
Biochemical oxygen demand (BOD) is characterized as the measure of oxygen required by
microscopic organisms while balancing out decomposable organic matter under high-impact
conditions (John, 2013). The BOD test is broadly used to decide the pollution quality of
household and industrial wastewaters; it indicates the amount of oxygen used to break down
waste. BOD test is unique among other ways of determining water quality, Water with high
BOD shows that there is high levels of microorganism activities (Kwok, 2005).
BOD is a critical water quality parameter to quantify. It speaks to the measure of broke
down oxygen devoured by microorganisms amid the deterioration of natural issue in an example
and is determined as the underlying DO focus short the last DO fixation over a given timeframe.
Most generally (Mullis, 2013), the multi-day BOD (BOD5) is what is estimated; the explanation
behind this is the BOD test was first used in England, the theory behind this is no rivers in
England they take more than 5 days for water to flow from source to the lake or ocean .
High BOD level means there is a great deal of organic matter present in the example and
is normal in wastewater (Qiao, Hu & Li, 2016). The BOD of sewage must be estimated all
through the treatment procedure to guarantee that the water body it is being released into will
keep up worthy DO levels and the environment can endure. Ordinary BOD5 values are 110-400
mg/L for raw wastewater, 5-15 mg/L for gushing, and 0 for an unpolluted stream (Cross &
Summerfelt, 2007).
Apparatus
Biochemical Oxygen Demand (BOD)_3

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