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Which of the following has a vertical flow of waste in a reactor system?

(a) Vertical reactor

(b) Rotating drum

(c) Horizontal reactor

(d) Windrow composting

The question was posed to me during an interview.

My doubt stems from Aerobic Treatment of Solid Wastes topic in chapter Biotechnology for Solid Waste Management of Environmental Biotechnology

1 Answer

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Correct answer is (a) Vertical reactor

The explanation: In vertical reactor, the waste flows vertically with mass flow in a vertical direction, rotating drum with helical ridges can transport the waste in a helical manner, whereas, windrow composting is a type of non-reactor system used for composting systems where the waste material is in direct contact with atmosphere, and waste is loaded into a horizontal reactor composting system with a wheel loader.

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