The influent can be fed to each tank from the influent channel on the north end of the tanks or it can be diverted to an aerated channel that runs the length of the tanks and then fed into one tank. A 16 inch air supply line from the blower building is diverted to two 14 inch headers to supply air to the aeration tanks. Fine bubble diffusers are used for the aeration system. Effluent weirs are located on the south end of each tank. The effluent over the weirs is channeled to a 36 inch cast iron pipe which connects to the final settling tanks.
Wastewater is fed into the south end of the tanks through a series of adjustable gates.
The effluent flows over a grid of weirs on the northern half of the tank. Sludge is scraped into the hoppers on the south end of the tanks where it is collected for removal. The return activated sludge pumps station has two vertical non-clog pumps, each with a capacity of 1950 gpm at 20 feet of head. Sludge is drawn off each settling tank through a 10 inch cast iron pipes with telescopic valves. Sludge can either be pumped directly back into the aeration tanks or can be pumped to the digester as waste activated sludge.