First slide

Microbes in Sewage Treatment

Question

The treatment of waste water in a sewage treatment plant (STP) is done by

Easy

A

autotrophic microbes naturally present in the sewage
B

autotrophic microbes cultured separately and then added to sewage
C

heterotrophic microbes cultured separately and added to sewage
D

heterotrophic microbes naturally present in sewage

Solution

Before disposal, sewage is treated in sewage treatment plants (STPs) to make it less polluting. Treatment of waste water is done by the heterotrophic microbes naturally present in the sewage.

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