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AWWA ACE68710

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AWWA ACE68710 Comparison of Life Cycle Costs for Perchlorate Treatment Using Non-Regenerable Ion Exchange versus Biological Treatment

Conference Proceeding by American Water Works Association, 11/01/2008

Melcher, Barbara; Yoshimura, Jason

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This powerpoint presentation begins by providing a brief overview of the East Valley Water District in California's San Bernardino County and historic perchlorate levels. In 2006, the district started a planning levelstudy to evaluate a centralized treatmentfacility consisting offour existing wells (Wells 24A, 24B, 25, and 107) that wouldtreat for both perchlorate and nitrate. Project objectives included the following:develop conceptual-level design criteria forion exchange and biological treatment;estimate life cycle costs; and,recommend treatment technology. Biological treatment alternative is outlined, along with life cycle cost analysis assumptions and a product flow comparison. Presentation conclusions and recommendations include the following:at this facility for low-level perchlorate andnitrate treatment, ion exchange is lessexpensive on a per acre-foot basis;use non-regenerable ion exchange forperchlorate removal; and,use regenerable ion exchange for nitrateremoval. Includes tables, figures.

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Edition: Vol. - No. Published: 11/01/2008 Number of Pages: 27File Size: 1 file , 2 MB