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Which of the following filter is used in the anaerobic treatment of sewage?

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in Environmental Engineering by (81.4k points)
Which of the following filter is used in the anaerobic treatment of sewage?

(a) Intermittent sand

(b) Trickling filter

(c) Contact filter

(d) Biological filter

I got this question in an internship interview.

My question is taken from Types of Sewage Filter topic in section Sewage Filtration and Activated Sludge Process of Environmental Engineering

1 Answer

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Best answer
Right choice is (d) Biological filter

Easiest explanation: Biological filter is used in anaerobic treatment, whereas intermittent sand filter, trickling filter and contact filter are used in the aerobic treatment of sewage.

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