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Definition of BOD

Where is meth...

Question

Where is methane produced during the sewage water treatment process?

A

Anaerobic digestion

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B

Activated sludge system

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C

Trickling filters

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D

All of these

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Solution

The correct option is A
Anaerobic digestion

Anaerobic digestion is a bacterial process that is carried out in the absence of oxygen. It generates biogas with a high proportion of methane.

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Similar questions

Q. Select the correct statement regarding activated sludge formed during secondary sewage treatment.

Q. Which of the following is pumped into anaerobic sludge digesters during the sewage treatment?

Q. During waste water treatment, trickling filter is used for

Q. Study the following statements and select the incorrect ones.

(i) Physical removal of large and small particles through filtration and sedimentation is called primary sewage treatment.
(ii) Secondary sewage treatment is mainly a mechanical process.
(iii) Activated sludge sediment in a sewage treatment plant is a rich source of aerobic bacteria.
(iv) Biogas, commonly called as gobar gas, is pure methane.

Q. (a) Describe the process in which BOD is reduced during sewage treatment.
(b) What is activated sludge?
[3 marks]

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Definition of BOD

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