Question

The sedimented and floating materials are removed by this treatment process.
i) primary treatment ii) secondary treatment
iii) tertiary treatment iv) peripheral treatment

Answer 1

The sedimented and floating materials are removed by peripheral treatment process.

It involves removal of floating materials like leaves, paper and inorganic solids like sand and grit along with oily substances.

There are different types of equipment are used in this process.

They are screeners, grit chambers and skimming tanks.

The next treatment after this is primary treatment, in which organic solids which cannot be removed in this process are removed.

Answer 2

Answer:

The sedimented and floating materials are removed by peripheral treatment process.

It involves removal of floating materials like leaves, paper and inorganic solids like sand and grit along with oily substances.