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Question: Answered & Verified by Expert
Activated sludge should have the ability to settle quickly so that it can
BiologyMicrobes in Human WelfareNEET
Options:
  • A Be rapidly pumped back from sedimentation tank to aeration tank
  • B Absorb pathogenic bacteria present in waste water while sinking to the bottom of the settling tank
  • C Be discarded and anaerobically digested
  • D Absorb colloidal organic matter
Solution:
1935 Upvotes Verified Answer
The correct answer is: Be rapidly pumped back from sedimentation tank to aeration tank
Activated sludge should have the ability to settle quickly so that it can be rapidly pumped back from sedimentation tank to aeration tank.

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