First slide

Microbes in Sewage Treatment

Question

In the process of treating sewage and industrial wastewaters using air and a biological floc, the sediment obtained is called :

Easy

A

activated sludge
B

biogas
C

bear
D

wine

Solution

Once the BOD of sewage or waste water is reduced significantly, the effluent is then passed into a settling tank where the bacterial ‘flocs’ are allowed to sediment. This sediment is called activated sludge.

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