Pumping Stations

After the influent passes through the screens, the flow enters two pumping stations which lift the wastewater from the screening chamber to approximately 10 feet above ground level so that it may flow through the treatment process by gravity. The pumps in each pumping station are separated from the wet wells so that maintenance can be performed without removing the pumps. The electric motors which power the pumps sized are up to 500 horsepower. The two pumping stations were constructed separately. The older station has seven pumps with a combined capacity of 230 mgd and the newer station has five pumps with a combined capacity of 200 mgd. The treatment plant can pass a maximum flow of approximately 190 mgd before bypassing may be necessary to protect the surrounding areas from basement flooding, and the treatment plant capital equipment from damage. Three turbo generators, 2,500 kW each, are continuously on standby to provide power in case of a utility company emergency.

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