Which wastewater treatment process is responsible for removal of most of the BOD in sewage?

Question

Quizplus · Accepted Answer

Secondary sewage treatment is responsible for the removal of most of the BOD in sewage. This process involves the use of microorganisms to break down organic matter in the wastewater, reducing the BOD levels. Anaerobic sludge digestion is a separate process that occurs after secondary treatment and is used to further break down organic matter and produce biogas. Primary treatment is primarily meant for removal of large materials such as grit, debris, and solids, while tertiary treatment is used for advanced removal of nutrients and contaminants. Water treatment is a separate process altogether that is used to make water safe for consumption.

Which Wastewater Treatment Process Is Responsible for Removal of Most