The function of sedimentation tank in sewage treatment is to:

A. Disinfect the sewage

B. Remove water content

C. Aerate the sewage

D. Remove suspended solids

Answer: Option D

Solution(By Examveda Team)

A sedimentation tank allows suspended particles to settle out of water or wastewater as it flows slowly through the tank, thereby providing some degree of purification. A layer of accumulated solids, called sludge, forms at the bottom of the tank and is periodically removed.