In-Situ Air Sparaing: Engineering and Design
CORPS OF ENGINEERS WASHINGTON DC
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In-situ air sparging IAS is a rapidly emerging remediation technology for treatment of contaminants in saturated zone soils and groundwater. Injection below the water table of air, pure oxygen, or other gases may result in removal of contaminants by volatilization or bioremediation. Less commonly, IAS can be used to immobilize contaminants through chemical changes such as precipitation. This Engineer Manual EM provides guidance for evaluation of the feasibility and applicability of IAS for remediation of contaminated groundwater and soil and, as a secondary objective, describes design and operational considerations for IAS systems. The document is primarily intended to set US Army Corps of Engineers USACE technical policy on the use of the technology and to help prevent its application in inappropriate settings. The primary focus of this EM is to provide guidance for assessing the feasibility and applicability of IAS. Secondarily, this EM describes design and operational issues related to implementing pilot- and full-scale IAS systems, although it is not meant to address design issues in detail. Because IAS technology is still evolving, this EM is intended to consolidate existing guidance and to stimulate the acquisition and reporting of new information that will continue to refine the technology.
- Protective Equipment
- Physical Chemistry