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1 mark

Which of the following is put into Anaerobic sludge digester for further sewage treatment?

  1. A
    Primary sludge
  2. B
    Floating debris
  3. C
    Effluents of primary treatment
  4. D
    Activated sludge

Solution & Step-by-step Explanation

During secondary treatment, once the BOD of sewage is reduced significantly, the bacterial flocs are allowed to sediment. This sediment is called activated sludge. A small part of this is used as inoculum, and the remaining major part is pumped into large tanks called anaerobic sludge digesters.

Practice this question

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Which of the following is put into Anaerobic sludge digester for further sewage treatment?
A
Primary sludge
B
Floating debris
C
Effluents of primary treatment
D
Activated sludge

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Microbes in Human WelfareSewage Treatment

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