Proof Positive Ventilation Dynamics: Confirming Airflows in Pressurized Sewer Networks
Abstract: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 Sewer ventilation modeling was conducted to determine the total air volume that would need to be withdrawn and treated to depressurize the effected sewers.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).
Document Type: Research Article
Publication date: January 1, 2009
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