In Sewage Treatment, the Removal of Large Objects and Particulate

Question

In sewage treatment, the removal of large objects and particulate matter is achieved during
A)primary treatment.
B)secondary treatment.
C)tertiary treatment.
D)quaternary treatment.

Accepted Answer

Primary treatment involves the physical removal of large objects, debris, and sediment through processes such as screening and sedimentation. Secondary treatment involves biological processes to break down organic matter further, while tertiary treatment involves additional filtration and disinfection. Quaternary treatment (sometimes called advanced treatment) may involve advanced technologies such as membrane filtration or reverse osmosis.