Question

What should be the velocity for the sedimentation process?

(a) High

(b) Low

(c) Does not depend

(d) Very high

This question was addressed to me in an online interview.

I would like to ask this question from Mechanical Separation in division Mechanical Separation of Food Processing Unit Operations

Answer 1

The correct choice is (b) Low

To explain: In sedimentation tank, the continuous flow through the equipment is commonly desired, so therefore the flow velocities have to be low enough to avoid unsettling of the sediment.