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Sustaining Siphons Subsequent to Sewer Separation

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Abstract:

Sewer separation provides many benefits to the receiving water and to the treatment facility. However, designers must be cognizant of potential negative impacts of reduced flows and velocities on downstream pipes, particularly siphons.

This paper reviews siphon design principles, discusses the problem presented by sewer separation, and, through the use of a case study from Chicopee, Massachusetts, provides a potential solution. This case study reviews the installation and performance of North America's first Hydroflush GS flush-cleaning device, winner of the WEF 2007 Innovative Technology Award - Collection Systems. Continuous flow monitoring in the interceptor sewer has provided several months of data from which to compare flows and velocities in the siphons, before and after sewer separation, with and without the flush-cleaning device.

Keywords: CSO; Flushing; Sewer Separation; Siphon

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/193864709793900249

Publication date: January 1, 2009

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  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

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