First slide

Microbes in Sewage Treatment

Question

Dissolved organic matter is present in

Easy

A

effluent of primary settling tank
B

effluent of aeration tank
C

effluent of anaerobic sludge digester
D

treated waste water released into natural water bodies

Solution

During primary treatment, in the primary settling tank, the supernatant forms the effluent which is rich in dissolved organic matter.

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