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Northwest Quadrant Pump Stations Improvements
Pure Waters District, Monroe County, New York
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| Owner:
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Monroe County
Dept. of Environmental
Services - Division of Pure Waters |
Shows temporary 24"
Bypass Line being installed on 36" Concrete Forcemain for connection of
new discharge
header at Flynn Road Pump Station |
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One of four new 500 Hp Dry-pit
Submersible
Pumps in Buttonwood Pump Station
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Lu Engineers designed and inspected a
$7.4 million upgrade of three sanitary sewage pump stations located in
Greece, NY. Improvements at the pump stations included new dry-pit
submersible pumps, variable speed drives, piping, communications and
power services, and odor-absorbing carbon towers. The new equipment
increased the stations' pumping capacity, energy efficiency and
reliability, thereby reducing maintenance and personnel costs and the
possibility of sewer backups and overflows. |
The Flynn Road, Island Cottage
and Buttonwood Creek Pump Stations date from the early 1970s
and direct raw sewage, received from Town of Greece sewers to the
County's Northwest Quadrant Wastewater Treatment Facility (NWQTF). The
three pumping stations work in sequence. The Island Cottage PS (30 MGD)
pumps to the Flynn Road PS (41 MGD), which pumps to the Buttonwood Creek
PS (54 MGD), which in turn pumps to the NWQTF.
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| The most significant problem encountered
with the project was to maintain continuous operation of the pump
stations while replacing the worn and undersized pumps. This problem was
compounded by the need to replace the existing welded steel discharge
headers located in the wet wells at Flynn Road and Island Cottage
because of corrosion problems. The solution was to construct new,
underground, 36" diameter ductile-iron discharge headers outside of the
pumping stations and connect the new headers to the existing 36"
diameter pre-stressed concrete forcemains. "Line stopping" was used on
the concrete forcemain to install a temporary 24" diameter bypass line.
This allowed the existing pumps to remain in use while the new header
was connected to the forcemain. Once the new header was in place, the
existing pumps were replaced one by one. The 24" bypass line allowed the
new and existing pumps to be used simultaneously. |
 New 36" Discharge Header
with 24" Emergency Bypass
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