Secondary treatment of sewage involves the use of which type of process?

Question

Quizplus · Accepted Answer

Secondary treatment of sewage primarily involves the biological removal of dissolved organic matter through processes such as activated sludge, trickling filters, and rotating biological contactors. Physical/chemical processes, such as screening and sedimentation, are typically used in primary treatment to remove insoluble particulate materials. Biological removal of inorganic nutrients and virus removal/inactivation may be included in secondary treatment, but they are not the primary processes involved.

Secondary Treatment of Sewage Involves the Use of Which Type