Customized Clarifier Introduction The primary treatment of sewage is to remove floating and settleable solids by sedimentation. Primary fining agents reduce the levels of suspended solids and contaminants embedded in these suspended solids. Due to the large quantities of reagents required to treat domestic wastewater, preliminary chemical coagulation and flocculation are generally not used, and the remaining suspended solids are reduced through subsequent stages of the system. However, coagulation and flocculation can be used to build compact treatment plants (also known as "package treatment plants"), or for further refinement of treated water. Sedimentation tanks, known as secondary upflow clarifiers, remove biologically grown flocs produced in some secondary treatment methods, including activated sludge, trickling filters, and rotating biological contactors.Customized Clarifier website: