Question

why is it necessary to treat sewage before disposing it in a water body?

Answer 1

So that water bodies dont get toxic and filthy which will inturn be hazardous and harmful for marine plants and animals. Our rivers will get polluted and dirty.Ans our diversity will be lost..

Answer 2

Before sewage is dumped in a water body heat must be cleaned properly so as to prevent water pollution

Explanation:

• First the sewage is mixed with the large number of chemicals so as to kill all the microorganisms present in the water.

• In the harmful effects of plastic and other solid material are removed.

• Then some purifying bacteria are added which break down the organic products into small forms of Methane which can then be used.

• Then the water is bleached by adding chlorine.

• Then the water is allowed to dump in a water body.

To know more about treatment of sewage,

Name two useful substances which are produced by the treatment of ...

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