Biopulsing: An in situ aeration remediation strategy
- Woodward-Clyde International-Americas, Santa Ana, CA (United States)
In situ soil aeration is an accepted technology for remediation of soil and groundwater impacted with petroleum hydrocarbons and halogenated hydrocarbons. This technology was utilized for remediating soil and groundwater at an aerospace components manufacturing facility located in southern California, Soil and groundwater had been impacted at the facility from historical releases of petroleum and halogenated hydrocarbons. Innovations in remediation system design, installation and monitoring strategies are described in this paper. The following tasks were conducted; (1) evaluation of the extent of impacted soil and groundwater; (2) collection of site-specific data necessary to evaluate and implement an appropriate remediation system to address the hydrocarbon-impacted soil; and (3) design, installation and operation of an in situ aeration system for remediation of soil and groundwater. The in situ aeration system operates on the principles of bioventing. Air was injected weekly into the subsurface by a system of wells placed at selected locations in short pulses lasting several hours. Oxygen utilization in the subsurface was monitored using subsurface sensors. Subsurface oxygen utilization rates of up to 1.5 percent resulted in an estimate of mass reduction of 71 pounds of hydrocarbons. The concentration of halogenated hydrocarbons was reduced in groundwater following commencement of aeration was observed in subsequent sampling events. The contribution of vadose zone aeration in reducing the concentrations of halogenated hydrocarbons in groundwater is currently being evaluated.
- OSTI ID:
- 567838
- Report Number(s):
- CONF-971032-; TRN: 98:000358-0037
- Resource Relation:
- Conference: In situ remediation of the geoenvironment conference, Minneapolis, MN (United States), 5-7 Oct 1997; Other Information: PBD: 1997; Related Information: Is Part Of In situ remediation of the geoenvironment; Evans, J.C. [ed.]; PB: 622 p.
- Country of Publication:
- United States
- Language:
- English
Similar Records
Bioventing in the subarctic: Field scale implementation of soil heating to allow in situ vadose zone biodegradation throughout the year
Sour gas plant subsurface remediation technology research and demonstration project. Quarterly technical progress report, January 1, 1994--March 31, 1994