Civil Engineering - GATE Exam Questions - Discussion

17. 

The following characteristics pertain to the sand filters used in water industry.

  1. Filtration rate is 1 to 4 m3 (m2 day).
  2. Typical duration of operation in one run is 24 to 72 hours.
  3. Operating cost is low.

Which of the above characteristics pertain to slow sand filters ?

[A]. I, II and III
[B]. I and II
[C]. II and III
[D]. I and III

Answer: Option D

Explanation:

No answer description available for this question.

Sevya said: (Aug 23, 2014)  
How the operating cost will help for slow function of filters.

Darshan said: (Aug 8, 2018)  
Duration of operation is one month.

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