In situ remediation of hydrocarbon contamination using an injection-extraction process
- Serrener Consultation, Inc., Sherbrooke, Quebec (Canada)
- Ecosite, Inc., Montreal, Quebec (Canada)
Ecosite Inc. has developed a soil treatment technology to be applied in situ using an injection-extraction system (IES). This new restoration process uses custom-designed equipment for recovering free-phase hydrocarbons and for injection/recovery of different treatment solutions through cyclic manipulation of the water table level. Process development applied the basic principles of soil washing with improved distribution of the washing solution and improved hydraulic control using air sparging and vacuum capability. In this case study, free-phase recovery and soil washing have been used successfully to remediate the site. During the fall and winter of 1993--94, in situ restoration of soil contaminated with cutting oil below a machine shop was begun. The contamination extended from 1.83 to 4.27 m underneath the concrete slab. This represents a volume of 1,800 m{sup 3} of oil-laden soil with concentrations reaching 200,000 mg/kg. Moreover, free-floating phase hydrocarbons up to 1 m thick were observed. To clean the site, 400 injection/recovery points were arranged into three networks. A data collection system was used to monitor the water table level. A total of 160,000 kg of oil was extracted from the subsoil in less than 110 days of operation.
- OSTI ID:
- 490933
- Report Number(s):
- CONF-950483-; ISBN 1-57477-007-1; TRN: 97:011796
- Resource Relation:
- Conference: 3. international in situ and on-site bioreclamation symposium, San Diego, CA (United States), 24-27 Apr 1995; Other Information: PBD: 1995; Related Information: Is Part Of Applied bioremediation of petroleum hydrocarbons; Hinchee, R.E.; Kittel, J.A. [eds.] [Battelle Memorial Inst., Columbus, OH (United States)]; Reisinger, H.J. [ed.] [Integrated Science and Technology, Inc., Marietta, GA (United States)]; PB: 547 p.; Bioremediation, Volume 3(6)
- Country of Publication:
- United States
- Language:
- English
Similar Records
The application of in situ air sparging as an innovative soils and ground water remediation technology
Physical and biological remediation of oil-polluted river bed and hillside sediments resulting from a ruptured oil pipeline in