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Which of the following has the potential to ‘rough’ high strength industrial effluents prior to sewage discharge?

(a) High rate bio filters

(b) Conventional bio filters

(c) Percolating filters

(d) Rotating biological contractors

I had been asked this question during an interview.

I want to ask this question from Biological Treatment of Waste Water in section Biological Treatment of Waste Water of Environmental Biotechnology

1 Answer

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Correct choice is (a) High rate bio filters

For explanation: High rate bio filters, usually constructed as tower models treating food waste which has considerable potential to rough high strength industrial effluents prior to sewage discharge, Conventional bio filters are also called as Percolating filters and Rotating biological contractors have spherical shaped discs for carbonaceous oxidation of waste water.

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