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Denver Metro's Solids Processing Buildings Ionized Air Odor Control Systems Successfully Eliminate Odor with Ninety-Eight Percent Less Power than Capture and Treat Systems

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Polarized air ionizing hardware that produces positively and negatively charged oxygen molecules, or ions, but no ozone . will be discussed. This European technology has been successfully applied at wastewater facilities in Europe for over twenty years. Operating systems in the US now have a successful track record of over six years. The ionized air effectively oxidizes hydrogen sulfide, ammonia, and other organic gases. In addition to providing odor control to the community and a safe work environment, air ionization is shown to prevent the corrosion of electronics and equipment while saving huge amounts of energy.

These ionizers are modular and can be installed in ductwork on the fresh air supply side of an existing or new ventilation system.

The power savings accrues in the low power to operate the modules (35 watts per module) plus the much reduced pressure drop through the air ionization system . These plenums are part of wide open HVAC systems with ion tubes extending into the air stream, thus creating little air flow resistance. This should be compared to traditional collect and treat systems with tight packed media that creates very large pressure drops.

At the 150 MGD Denver Metro Wastewater Reclamation District (Metro), a total of 73,906 cubic meters/hr (43,493 CFM) of dewatered solids is being treated for the sludge processing areas.

The Metro air ionization system currently uses 1680 watts of power for the ion modules. This represents a total power savings of 98 percent over, for example, a biofilter, an 883 per year power cost and a 48,523 annual savings

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/193864708788804595

Publication date: January 1, 2008

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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 These proceedings are not peer reviewed.

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