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Dissolved Air Flotation for Improved Treatment Efficiency in POTW, Tertiary, and Reuse Applications

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Through a pilot study program, West Basin and United Water evaluated several different technologies to improve filterability and run time of their existing Title 22 filters at the Edward C. Little Water Recycling Facility (ECLWRF) in El Segundo, California. ECLWRF is managed by the West Basin Municipal Water District and is operated by United Water. ECLWRF is the largest facility of its kind in the United States, producing 30 MGD of recycled water for their commercial, industrial, and municipal customers. Title 22 of the California Code of Regulations requires that tertiary recycled water undergo some form of conventional treatment between the coagulation and filtration processes. West Basin currently employs a high–rate solids contact clarifier upstream of mono–media anthracite gravity filters. Infilco Degremont's High–Rate Dissolved Air Flotation process (AquaDAF®), followed by an anthracite media filter, was one of the technologies that was evaluated in July and August 2010.

Keywords: Title 22; dissolved air flotation; reuse; tertiary wastewater

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/193864711802765822

Publication date: January 1, 2011

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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 These proceedings are not peer reviewed.

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