In situ treatment of groundwater using zero-valent metal and permeable treatment walls: Fundamentals and approaches
- Geomatrix Consultants, Inc., San Francisco, CA (United States)
- Intersil, Inc., San Francisco, CA (United States)
The remediation of groundwater affected by volatile organic compounds (VOCs) and metals continues to be one of the primary challenges facing the environmental industry. With documented evidence that the traditional pump-and-treat method of remediating contaminated groundwater is highly inefficient in most cases, efforts have focused on developing innovative techniques for treating groundwater in situ. One innovative treatment technology that has been applied to in situ treatment of groundwater and has received a great deal of attention in the past two years, can be referred to as zero-valent metal-enhanced treatment (ZMET) of organic compounds and dissolved metals. The ZMET method actually includes two treatment process groups: metal-enhanced reductive dehalogenation for VOCs and metal-enhanced reductive immobilization for metals. Theorized as a two-step reaction involving the oxidation of zero-valent metal and the reduction of water, the metal-enhanced reductive dehalogenation process has been shown to be successful in degrading chlorinated VOCs. The metal immobilization process has been demonstrated to significantly reduce the mobility of oxidized metals through reduction and precipitation of low-solubility compounds.
- OSTI ID:
- 452010
- Report Number(s):
- CONF-9611118--
- Country of Publication:
- United States
- Language:
- English
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