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Question: Answered & Verified by Expert
In oxidation pond, once BOD from the sewage is reduced significantly, the 'flocs' are allowed to sediment and it is known as:
BiologyMicrobes in Human WelfareNEET
Options:
  • A Activated sludge
  • B Inactivated sludge
  • C Primary sludge
  • D Secondary sludge
Solution:
2273 Upvotes Verified Answer
The correct answer is: Activated sludge
Once BOD of sewage water is reduced significantly, the effluent is the passed into the setteling tank where the bacterial ' flocs' are allowed to sediment. This sediment is called as activated sludge.

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