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Waste Water Engineering

Q1: Skimming tanks are

A tanks provided with self-cleansing screens

B used to remove the grease and oil

C improved version of grit chambers.

D those from which sludge is skimmed out

ANS:A - used to remove the grease and oil

Skimming tanks are primarily used to remove grease and oil from wastewater. Grease and oil, being lighter than water, tend to float on the surface of the water. Skimming tanks are designed to take advantage of this property by allowing the grease and oil to rise to the surface where they can be skimmed off and removed. So, the correct statement is:

  • used to remove the grease and oil



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