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Question

(A) Biochemical Oxygen Demand $(BOD)$ refers to the amount of dissolved oxygen that would be consumed if all the organic matter in one liter of water

Vedclass · Accepted Answer

increase

Vedclass · Answer

(A) Biochemical Oxygen Demand $(BOD)$ refers to the amount of dissolved oxygen that would be consumed if all the organic matter in one liter of water were oxidized by bacteria.When a large amount of sewage (organic waste) is discharged into a river,the population of decomposer bacteria increases to break down this organic matter.These bacteria consume a large amount of dissolved oxygen from the water for the process of decomposition.Consequently,the $BOD$ of the river water increases significantly as the demand for oxygen by microorganisms rises.

If a large amount of sewage is discharged into a river,its $BOD$ will ......... .

Similar Questions

Sewage or municipal waste should not be directly passed into rivers,streams and other water bodies because
$I.$ it contains human excreta and other organic waste
$II.$ it contains a number of pathogenic microbes
Which of the statement given above is/are correct?

Identify the stage of sewage treatment shown below.

Which of the following is put into an anaerobic sludge digester for further sewage treatment?

Select the mismatched option from the following:

Which organisms grow when air is passed through primary effluent using mechanical agitation?

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