Question

Which is the use of comminutors?

(a) To reduce the size of particles

(b) To remove the grit

(c) To remove large particles

(d) To remove small particles

The question was asked during an online interview.

This interesting question is from Effluent in chapter Recovery and Purification of Fermentation Products, Effluent Treatment, Bioreactor Design Considerations of Fermentation Technology

Answer 1

Correct answer is (a) To reduce the size of particles

To elaborate: Sewage Grinders are also known as comminutors used in the wastewater treatment plants and pumping stations. They help in the breakdown of larger solids into the smaller ones.