The filter over which sewage is sprinkled is called as

A. Trickling filter

B. Percolating filter

C. Contact bed

D. Intermittent sand filter

Answer: Option A

Solution(By Examveda Team)

A trickling filter, also known as percolating filter, is an artificial bed of stone or broken brick material over which waste water or sewage is allowed to sprinkle or to trickle. It is then collected through the under drainage system.