Project Tackles Groundwater Remediation

Jan. 1, 2004
An innovative treatment technology is being commissioned at a groundwater remediation site in Mountain View, CA.

An innovative treatment technology is being commissioned at a groundwater remediation site in Mountain View, CA. 1,4-Dioxane, a pollutant recently identified in a decades-old groundwater contamination plume, will be removed using HiPOx™, a commercially proven treatment system that destroys contaminants onsite.

In addition to destroying the newly discovered 1,4-Dioxane - a compound that can not be removed with conventional air stripping or carbon technology - the treatment system will be used to remove solvent contamination that responsible parties have been treating at the site for a number of years.

Applied Process Technology, Inc. ("Applied") was awarded a contract earlier this year to treat groundwater contaminated with 1,4-dioxane at a site located within the Middlefield-Ellis-Whisman (MEW) EPA Superfund site in Mountain View.

Applied was awarded the contract after an exhaustive technology search and subsequent onsite testing that indicated its HiPOx treatment system would provide the most effective and economical solution for removing contaminants such as 1,4-dioxane, trichloroethylene (TCE), 1,2 dichloroethylene, (1,2 DCE) and vinyl chloride.

Applied delivered the treatment system, designed to site-specific conditions, at the end of November.

The HiPOx oxidation technology mixes hydrogen peroxide and ozone to form hydroxyl radicals, an aggressive oxidant that reacts chemically with volatile organic compounds including 1,4-dioxane, vinyl chloride, TCE, PCE, MTBE, TBA and other compounds, converting them into benign carbon dioxide and water. The carbon dioxide is vented off, while the cleansed water is returned to the ground or put to productive use. Unlike air stripping and carbon systems, HiPOx actually destroys contaminants onsite rather than transferring them to another medium for further treatment and disposal.

The system at the MEW site is designed to treat up to 50 gpm of groundwater. A compact HiPOx "cabinet unit" with a footprint that measures approximately 8 feet by 4 feet is being installed.

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