Question

Which of the following unit operations does not generate waste water?

(a) Brewing

(b) Fermentation

(c) Packaging

(d) Malting

I had been asked this question during an interview.

Question is taken from Wastewater Treatment of Food Processing Industries in division Wastewater Treatment of Food Processing Industries of Environmental Biotechnology

Answer 1

Correct option is (d) Malting

For explanation I would say: Malting is a process in which the grain germinated is further dried, so it doesn’t involve any waste water, Brewing, Fermentation and Packaging steps involve a lot of waste water being generated in each step.