Question

1. Number the following processes in the correct order to show how wastewater is treated in sewage treatment plants:-

Sedimentation of waste from sewage

Chemical treatment.

Decomposition of organic matter.

Removal of large solid waste from sewage.

Separation of sediments. ​

Answer 1

Answer:

1. Removal of large solid waste from sewage.

2. Sedimentation of waste from sewage

3. Separation of sediments.

4. Decomposition of organic matter.

5. Chemical treatment.