Getting Water in, Keeping Air out and Dealing with Odors at Deep Drop Shafts
Abstract:Deep sewer drop shafts are becoming more prevalent as authorities and utility companies increasingly turn to development of the underground for solutions to their ever increasing need to convey sanitary and combined stormwater and sanitary flows. Dropping wastewater tens, or even hundreds of feet, leads to problems of air entrainment, erosion and the release of corrosive and odorous gases. Experience from successfully operating systems supports vortex drop shaft designs as an efficient way to introduce such flows while minimizing air entrainment, albeit with the need for additional deaeration. Criteria for selecting odor control systems are provided along with several aesthetic solutions for integrating the system into highly visible public areas.
Document Type: Research Article
Publication date: January 1, 2009
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