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Which of the following treatment shouldn’t be used for pre-treatment of solid waste?

(a) Mechanical treatment

(b) Biological treatment

(c) Thermal treatment

(d) Heavy metal treatment

I have been asked this question in an interview for job.

This key question is from Waste Disposal by Sanitary Landfilling in portion Biotechnology for Solid Waste Management of Environmental Biotechnology

1 Answer

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Best answer
Correct answer is (d) Heavy metal treatment

The best I can explain: Heavy metal treatment can’t be used for pre-treatment of solid waste as it poses a great threat to the environment because of its toxicity, whereas, mechanical treatment, biological treatment, thermal treatment to reduce the amount of biodegradable organic matter to reduce the environmental pollution.

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