Question

In which type of aerator, the flow of water is divided into fine streams and small droplets?

(a) Cascade aerator

(b) Inclined apron aerator

(c) Spray aerator

(d) Gravel bed aerator

I had been asked this question by my school teacher while I was bunking the class.

My enquiry is from Types of Screens and Aerators topic in division Unit Operations, Screening and Aeration of Environmental Engineering

Answer 1

Correct answer is (a) Cascade aerator

To elaborate: In Cascade aerator, the flow of water is divided into fine streams and small droplets such that they come in contact with air in their trajectories and reduces CO2 by 70-90%.