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USFilter has obtained NSF Standard 61 certification for its GFH™ arsenic removal media. The media removes arsenic from potable water supplies and helps existing plants meet the new arsenic standards that by 2006 will lower the maximum amount of arsenic allowed in drinking water from 50 parts per billion (ppb) to 10 ppb.
"This certification assures our customers that the media used to purify their drinking water is safe in itself," states Dr. Paul Gallagher, development director for USFilter.
ANSI/NSF Standard 61 certification addresses crucial aspects of drinking water system components, namely whether contaminants that leach or migrate from the product/material into the drinking water are above acceptable levels in finished waters. The standard addresses possible health effects of treatment chemicals and related impurities, which are considered contaminants for evaluation purposes.
The GFH media is a single-use, adsorption media for removal of arsenic, antimony, selenium and other heavy metals. GFH systems are useful for wellhead applications where no current arsenic removal treatment is in place. The media is installed in pressure vessels where water simply passes through the media for removal of the contaminants. Existing systems need only install the treatment vessels between the well pump and distribution system.
No pretreatment chemicals are needed and backwashing occurs on a monthly basis. The GFH media is removed from the vessel and replaced with new media once the adsorption capacity is consumed. Spent media has been shown to pass toxicity characteristic leaching procedure (TCLP) testing so solid waste disposal can be made at a sanitary landfill.
United States Filter Corporation, a Vivendi Environnement company, is North Americas largest water company providing comprehensive water and wastewater systems and services to commercial, industrial, municipal and residential customers.