Field demonstration of foam injection to confine a chlorinated solvent source zone
| Autor: | Elyess Essouayed, Olivier Atteia, Michael D. Annable, Antoine Joubert, Nathalie Guiserix, Clément Portois |
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| Rok vydání: | 2017 |
| Předmět: |
Groundwater flow
Halogenation 0208 environmental biotechnology Aquifer 02 engineering and technology 010501 environmental sciences 01 natural sciences Hazardous waste medicine Environmental Chemistry Groundwater 0105 earth and related environmental sciences Water Science and Technology geography geography.geographical_feature_category Petroleum engineering Contamination 020801 environmental engineering Containment Solvents Environmental science Flushing medicine.symptom Relative permeability Water Pollutants Chemical |
| Zdroj: | Journal of contaminant hydrology. 214 |
| ISSN: | 1873-6009 |
| Popis: | A novel approach using foam to manage hazardous waste was successfully demonstrated under active site conditions. The purpose of the foam was to divert groundwater flow, that would normally enter the source zone area, to reduce dissolved contaminant release to the aquifer . During the demonstration, foam was pre generated and directly injected surrounding the chlorinated solvent source zone. Despite the constraints related to the industrial activities and non-optimal position of the injection points, the applicability and effectiveness of the approach have been highlighted using multiple metrics. A combination of measurements and modelling allowed definition of the foam extent surrounding each injection point, and this appears to be the critical metric to define the success of the foam injection approach. Information on the transport of chlorinated solvents in groundwater showed a decrease of contaminant flux by a factor of 4.4 downstream of the confined area. The effective permeability reduction was maintained over a period of three months. The successful containment provides evidence for consideration of the use of foam to improve traditional flushing techniques, by increasing the targeting of contaminants by remedial agents. |
| Databáze: | OpenAIRE |
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