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Bio filters are fed with effluent only after ____________

(a) Initial settlement

(b) Bio-accumulation

(c) Bio-degradation

(d) Bio-magnification

This question was posed to me in unit test.

My query is from Biological Treatment of Waste Water in portion Biological Treatment of Waste Water of Environmental Biotechnology

1 Answer

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Correct answer is (a) Initial settlement

Easiest explanation: Bio filters are fed with effluent only after initial settlement of the industrial effluent to avoid clogging of pores of filters also, it would block the distributor arm, Bio-magnification is the process by which toxic substances get deposited in the food chain, Immobilization uses Bio-accumulation processes, bio-degradation is the process that leads to degradation of compounds with the help of bacteria.

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