Sewage treatment

Study the following statements and select the incorrect ones. (i) Physical removal of large and small particles through filtration and sedimentation is called primary sewage treatment. (ii) Secondary sewage treatment is mainly a mechanical process. (iii) Activated sludge sediment in a sewage treatment plant is a rich source of aeroic bacteria. (iv) Biogas, commonly called as gobar gas, is pure methane.

A sewage treatment plant involves the following steps in its working : Aerotion tank,Grit and sand removal tank, Second sedimentation tank, Bar screen, First sedimentation tank Arrange all the above steps in the correct order in which they occur in the sewage treatment plant.

Explain the process of sewage water treatment before it can be discharged into natural bodies.

In the treatment of sewage, primary treatment is used to remove

The primary treatment of sewage involes

Primary treatment of sewage is

Primary treatment of sewage is

What is treatment of sewages purpose?

What is primary treatment of sewage?