Waste Water Engineering
In the activated sludge process

Water is removed by centrifugal action
Aeration is done with an admixture of previously aerated sludge
Aeration is continued till stability
Sludge is activated by constant stirring

ANSWER DOWNLOAD EXAMIANS APP

Waste Water Engineering
Skimming tanks are

Those from which sludge is skimmed out
Improved version of grit chambers
Used to remove the grease and oil
Tanks provided with self- cleansing screens

ANSWER DOWNLOAD EXAMIANS APP