Question

Which non-reactor system serves as a direct contact between the waste and the atmosphere?

(a) Windrow composting

(b) Vertical reactor

(c) Rotating drum

(d) Horizontal reactor

I have been asked this question in class test.

This is a very interesting question from Aerobic Treatment of Solid Wastes in division Biotechnology for Solid Waste Management of Environmental Biotechnology

Answer 1

The correct answer is (a) Windrow composting

For explanation I would say: Windrow composting can influence the atmosphere by emitting a lot of gases like the greenhouse gases and odor but rotating drum, horizontal reactor and vertical reactor system are three major types of reactor system used for microbial composting.