MCQ
What would happen if oxygen availability to activated sludge flocs is reduced?
  • A
    It will slow down the rate of degradation of organic matter.
  • The center of flocs will become anoxic, which would cause 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.

Answer

Correct option: B.
The center of flocs will become anoxic, which would cause death of bacteria and eventually breakage of flocs.

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