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Tailored Granular Activated Carbon Treatment of Perchlorate in Drinking Water. ESTCP Cost and Performance Report

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Perchlorate is a concern in drinking water because of its high solubility and mobility, its effects on thyroid hormone production, and treatment cost. Although perchlorate removal technologies suitable for wellhead application exist, there is a need to develop additional, economical perchlorate removal technologies. In addition, conventional wellhead technologies are specific for perchlorate only and are unable to effectively treat volatile organic compounds VOCs that are often co-contaminants. This project demonstrated the application of granular activated carbon GAC tailored TGAC for the removal of perchlorate in drinking water. The tailoring process adsorbs surfactants with quaternary ammonium groups to GAC, which dramatically increases the perchlorate removal capacity of the GAC, while still allowing the GAC to remove VOCs. The demonstration site was an operating drinking water treatment plant in Fontana, CA, a city located in the Inland Empire region of southern California. The Inland Empires perchlorate plume is at least 6 miles long and impacts water supplies in four towns. Two field test installations were implemented the first consisted of three vessels in series treating 38 gallons per minute GPM 0.14 m3minute, and the second consisted of six smaller-scale treatment trains treating 1.5 GPM 0.0057 m3minute. This cost and performance report summarizes the project a full final report providing more details on the technology, test procedures, and data is available.

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  • Water Pollution and Control
  • Theoretical Mathematics

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