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This powerpoint presentation presents a "silica scrub" procedure for improving arsenic adsorption media capacity. "Silica Scrubbing" is Severn Trent's term for reducing SiOsub2/sub interference. It is apatented process that uses anoff-line procedure to dissolve SiOsub2/sub from media surface involvingin situ media treatment, with theinitial step prior to routine backwash. Process chemistry and procedure are outlined, along with bench scale testing, on site pilot testing, the Susanville, California, CDC Pilot, silica scrub results, and SiOsub2/sub Scrub Status. Includes figures.

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Edition: Vol. - No. Published: 01/01/2008 Number of Pages: 14File Size: 1 file , 1.3 MB