NEET Biology question

A sewage treatment process, in which a portion of the decomposer bacteria present in the waste is recycled into the beginning of the process, is called **[AIIMS 2007]**

(A)Cyclic treatment
(B)Primary treatment
(C)Activated sludge treatmentCorrect
(D)Tertiary treatment

Answer: (C)

Solution

In activated sludge treatment, part of the settled sludge, rich in decomposer bacteria and other microbes, is recycled back into the aeration tank to inoculate the incoming sewage, speeding up organic matter breakdown.

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Question ID VK-129867