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Arsenic Removal from Potable Well Water

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The Oak Manor Municipal Utility District near Alvin, Texas has been operating a system for removing arsenic from potable water since April 2006. The system consists of two pressure vessels operated in series, fed directly by two wells. Arsenic is adsorbed by pelletized iron oxide media. The initial charge of media was still removing arsenic after over two years in service. Operating results, costs, and maintenance history at this facility will be discussed.

The system has since been installed in larger configurations at dozens of central treatment facilities, as well as at individual well sites like Oak Manor. Source water characteristics are very site-specific and will impact design and operating decisions. Design options include series flow, parallel flow, or combinations, and full treatment or partial bypass of the source water. Operating options include chlorination and pH adjustment. These options will be discussed.

Document Type: Research Article


Publication date: 2008-01-01

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