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Select the correct statement from the following:

  1. A
    Activated sludge-sediment in settlement tanks of sewage treatment plant is a rich source of aerobic bacteria.
  2. B
    Biogas is produced by the activity of aerobic bacteria on animal waste.
  3. C
    Methanobacterium is an aerobic bacterium found in rumen of cattle.
  4. D
    Biogas, commonly called gobar gas, is pure methane.

Solution & Step-by-step Explanation

In sewage treatment, the sediment in the secondary settling tank is called activated sludge, which is rich in aerobic bacteria (flocs) that were used to digest organic matter in the aeration tank.Biogas production and Methanobacterium are anaerobic processes/organisms.

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Try it yourself before checking the explanation above.

Select the correct statement from the following:
A
Activated sludge-sediment in settlement tanks of sewage treatment plant is a rich source of aerobic bacteria.
B
Biogas is produced by the activity of aerobic bacteria on animal waste.
C
Methanobacterium is an aerobic bacterium found in rumen of cattle.
D
Biogas, commonly called gobar gas, is pure methane.

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Microbes in Human WelfareSewage TreatmentBiogas

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