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High COD ratios is observed in slops from molasses distilleries after the __________

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in Environmental Biotechnology by (64.7k points)
High COD ratios is observed in slops from molasses distilleries after the __________

(a) biological treatment

(b) physical treatment

(c) purification

(d) chemical treatment

This question was posed to me in an interview for internship.

My enquiry is from Wastewater Treatment of Food Processing Industries topic in portion Wastewater Treatment of Food Processing Industries of Environmental Biotechnology

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The correct answer is (a) biological treatment

The best I can explain: In slops from molasses distilleries usually have high COD ratios after the biological treatment, Physical treatment and Chemical treatment doesn’t contain high COD, Purification is a method to purify some solids from a whole.

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