Question

Explain the controlling measures for water pollution caused by sewage.

Answer 1

Water pollution: The contamination of clean water by toxic materials is called water pollution.

The controlling measure for water pollution caused by sewage are as follows:

1. The sewage should be released into a reservoir after the primary and secondary treatment.
2. The big particles are mainly separated in primary treatment through floatation and sedimentation.
3. Microorganisms are used for secondary treatment as in the oxidation chamber or activated sludge process. An oxidation chamber is a shallow reservoir in which the sewage is stored.