The RBC System consists of 3 rows of discs, with 4 discs per row with a total surface area of 1,500,000 ft2. After the RBC's , wastewater enters into two final clarifiers. The sludge from the secondary clarifiers is then pumped back to the head end of the primary clarifiers. This helps to get the full use of the primary chemical added and thickens the sludge for better treatment and storage capacity in the digester. The sewage from the secondary clarifiers then flows into the filter feed wet well.
Secondary effluent is pumped through four mixed media pressure sand filters.
Filtration of secondary effluent is considered advanced or tertiary treatment and makes it possible to achieve excellent water quality. Sludge stabilization process consists of an anaerobic digester. The digester provides anaerobic fermentation of the sludge in the enclosed tank. When operating, the destruction of the organisms produces methane gas. The gas is then used to heat the contents of the digester and other plant buildings.