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Home » What would happen if oxygen availability to activated sludge flocs is reduced?a. It will slow down the rate of degradation of organic matterb. The centre of flocs will become anoxic, which would cause the death of bacteria and eventually breakage of flocs. c. Flocs would increase in size as anaerobic bacteria would grow around flocs. d. Protozoa would grow in large numbers
What would happen if oxygen availability to activated sludge flocs is reduced?
a. It will slow down the rate of degradation of organic matter

b. The centre of flocs will become anoxic, which would cause the death of bacteria and eventually breakage of flocs.

c. Flocs would increase in size as anaerobic bacteria would grow around flocs.

d. Protozoa would grow in large numbers
Biology | CBSE | Class 12 | Exercise 1 | Microbes in Human Welfare | NCERT Exemplar
What would happen if oxygen availability to activated sludge flocs is reduced?
a. It will slow down the rate of degradation of organic matter

b. The centre of flocs will become anoxic, which would cause the death of bacteria and eventually breakage of flocs.

c. Flocs would increase in size as anaerobic bacteria would grow around flocs.

d. Protozoa would grow in large numbers

Solution:

The microorganisms’ ability to break down and destroy the organic materials in sewage or activated sludge is dependent on oxygen. The degradation rate will slow if the oxygen availability of the activated sludge floc is lowered.

As a result, the correct answer is a. ‘it will slow down the pace of organic matter breakdown.’

i

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