Discuss the methods of waste water treatment.

What are flocs? Discuss their role in sewage treatment.

Discuss the electrolysis of water.

Explain the process of sewage water treatment before it can be discharged into natural water bodies . Why is this treatment essential ?

The greater BOD of waste water

Explain the process of sewage water treacment before it can be discharged into natural water bodies . Why is this treatment essential ?

Which of the following is related to integrated waste water treatment process within a natural system?

Assertion:- During integrated waste water treatment in town of Arcata cleaning process occurs in two stages. Reason: In first step dissovled heavy metals are removed and in second stage conventional sedimentation, filleration and chlorine treatments are given.

How did a citizen group called friends of Arcata marsh, Arcata California USA help to improve water quality of the marshland using integrated waste water treatment ? Explain in four steps.

Why is secondary waste water treatment refferred to as biological approach ?

Why do we prefer to call secondary waste water treatment as biological treatment?