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Sewage Pumping Stations
(Lift Stations)
The Princeton Waste Water
Treatment Plant has 5 major and
3 smaller pumping stations (Lift Stations) to transfer wastewater from approximately 55 miles
of gravity sewer lines to the headwork’s of the treatment plant.
Sewage flows by gravity into a wet well at
the lift station. When a set level in this well is reached, a pump will
automatically start to pump down the well. Some of the lift stations in the
Princeton system have variable speed controllers; the controllers will speed
up and slow down the pump as needed the keep a consistent level in the wet
well. Should the well continue to fill with the first pump running full
speed a second pump will start and run until a low level set point is
reached and the pumps shuts down. The purpose of a lift station is to raise
or lift the sewage to a higher elevation where it can then flow downhill via
gravity to the wastewater treatment plant facilities. There are several
different types of lift stations used within the Princeton sewer system
depending on the needs of each location.
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