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Indirect Potable Reuse, San Diego Tests Advanced Water Treatment System

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In an effort to develop local sustainable water supplies, the City of San Diego evaluated indirect potable reuse. A series of pilot scale tests were conducted using tertiary water from an existing water reclamation plant. The pilot train consisted of ultrafiltration (UF), reverse osmosis (RO) and advanced oxidation using ultraviolet light and peroxide. Program objectives included: water quality performance of the treatment train; comparison of product water quality to existing potable source water quality; impact of advanced oxidation on endocrine disrupting compounds (EDC), pharmaceuticals and personal care products (PPCP); and evaluate RO integrity monitoring methods. Results showed: effective removal of contaminates by the treatment train; a product water with a mostly lower concentration of contaminates than existing source water supply; advanced oxidation removing >99% of most EDC/PPCPs; and a high correlation between integrity testing methods.
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Keywords: ADVANCED OXIDATION; ADVANCED WATER TREATMENT; INDIRECT POTABLE REUSE; MICROCONSTITUENTS; REVERSE OSMOSIS

Document Type: Research Article

Publication date: 2007-10-01

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