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AWWA ACE90030
- Overview of Metropolitan's Ozone-Peroxone Demonstration Project
- Conference Proceeding by American Water Works Association, 01/01/1990
- Publisher: AWWA
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The Metropolitan Water District of Southern California in 1986 began bench-scale and pilot-scale tests to evaluate ways to meet reduce trihalomethanes (THMs) while controlling taste and odor problems and microorganisms. Because GAC proved expensive, the district directed its attention to peroxone (hydrogen peroxide/ozone). This paper describes a full-scale peroxone demonstration project that is now underway. The purposes of the study are to verify the peroxone process at large scale; confirm its effectiveness regarding disinfection byproducts, control of taste and odor, and disinfection efficiency; refine the process for full-scale design; evaluate assimilable organic carbon and disinfection byproducts biodegradation in large-scale filters. Because of the difficulty of retrofitting existing plants, peroxone will be applied as a preoxidant, followed by either conventional treatment or direct filtration. An optional degasification step will allow study of filter gas binding. The demonstration plant is described, with figures, and a project timetable is given.
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