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Startup of the Sugar Creek Wastewater Treatment Plant 200-mgd Influent Pump Station

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Charlotte-Mecklenburg Utilities (CMU) has recently completed the construction and startup of one of their largest wastewater pumping stations at Sugar Creek Wastewater Treatment Plant (WWTP). The influent pump station at Sugar Creek WWTP will convey base flows from existing interceptor sanitary sewers as well as wet-weather flows from the newly constructed Briar Creek relief sewer in order to reduce sanitary sewer overflows (SSOs) in the Briar Creek sewer shed.

The project included the construction of improvements to the influent sewer system on the plant site, construction of new influent screens, 130 mgd of high-head and 70 mgd low-head pumping capabilities, wet scrubber odor control, grit removal systems, and a flow equalization basin. The pump station design includes a self-cleaning trench-type wet well with submersible pumps mounted in a dry-pit application.

This paper will present topics relative to the lessons learned during startup of each of the facilities constructed as part of this project including improvements to the influent sewer system, bypass pumping operations to place the new system online, operation of the self-cleaning wet well, issues with wet-weather use facilities, specialty coating applications and other construction issues faced during the startup phase of the project.
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Keywords: Pump station; Submersible; coatings failure; self-cleaning; trench wet well; wet-weather

Document Type: Research Article

Publication date: 2011-01-01

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