In an activated sludge process which type of pump is used to recirculate the sludge?

Civil Engineering : Waste Water Engineering - Quiz(MCQ)

Vane Pump

Booster Pump

Centrifugal Pump

Vertical Turbine Pump

Correct Answer : Centrifugal Pump

Explanation : The activated sludge does not contain any solids. Also, it is not very viscous. Hence a centrifugal pump can be used for this application.

Recently Updated in Waste Water Engineering Questions

What is the growth of huge amounts of algae and other aquatic plants leading to the deterioration of the water quality called?

Algae growth

Eutrophication

Denitrification

Nitrification

Correct Answer : Option (B) : Eutrophication

Explanation : Eutrophication is the growth of huge amounts of algae and other aquatic plants leading to the deterioration of water quality. The untreated wastewater is rich in organic matter which demands oxygen.