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The recirculation ratio for the low rate trickling filter is ___________

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in Environmental Engineering by (81.4k points)
The recirculation ratio for the low rate trickling filter is ___________

(a) 1

(b) 2

(c) 3

(d) 0

This question was posed to me in an online quiz.

This intriguing question originated from Types of Sewage Filter in section Sewage Filtration and Activated Sludge Process of Environmental Engineering

1 Answer

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Best answer
Right answer is (d) 0

For explanation I would say: The recirculation system is not provided in the low rate trickling filter. So, when the recirculation is 0, the type of filter used is a low rate trickling filter.

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