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Proof Positive Ventilation Dynamics: Confirming Airflows in Pressurized Sewer Networks

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The Region of York (Toronto, Canada) has had a history of odor complaints in an area near the intersection of Steeles Avenue and Bayview Avenue for a number of years. The sewers in the area are characterized by hydraulic restrictions that impede the natural ventilation and air movement, causing pressurization and odor release from the upstream sewers. A field investigation was conducted to determine the exact cause and extent of pressurization in these sewers. Sewer ventilation modeling was conducted to determine the total air volume that would need to be withdrawn and treated to depressurize the effected sewers. Finally, fan testing was conducted to confirm the results of the modeling analysis and determine the most effective air extraction point(s).

Keywords: Fan Testing; Pressure Monitoring; Ventilation Dynamics

Document Type: Research Article


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 These proceedings are not peer reviewed.

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