Numerical Simulation of Dual-Phase Vacuum Extraction to Remove Nonaqueous Phase Liquids in Subsurface
Publication: Practice Periodical of Hazardous, Toxic, and Radioactive Waste Management
Volume 7, Issue 2
Abstract
Dual-phase vacuum extraction (DPVE) is an emerging cost-effective technology used to enhance remediation by recovering petroleum hydrocarbon from the subsurface. To improve its efficiency, insight into the complex processes and phase/component interactions in the remediation system needs to be gained before the system can be properly designed and operated. In this paper, a numerical simulation model is proposed to analyze the behavior of the complex DPVE remediation system. The simulator developed is then applied to a petroleum-contaminated site in western Canada that is undergoing the DPVE process. The influence of vacuum pressure employed at extraction wells on system performance is investigated. Moreover, the effects of parameter uncertainties in modeling results are also examined. The proposed approach offers an effective tool for evaluating remediation system performance and supporting decisions on site remediation and management practices.
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References
Box, G. E. P., Hunter, W. G., and Hunter, J. S. (1978). Statistics for experimenters, Wiley, New York.
Charbeneau, R. J., Johns, R. T., Lake, L. W., and McAdams, M. J.(2000). “Free-product recovery of petroleum hydrocarbon liquids.” Ground Water Monit. Rem., 20(3), 147–168.
Chen, Z., Huang, G. H., and Chakma, A.(1998). “Integrated environmental risk assessment for petroleum-contaminated sites: A North American case study.” Water Sci. Technol., 38(4/5), 131–138.
De Blanc, P. C. (1998). “Development and demonstration of a biodegradation model for nonaqueous phase liquids in groundwater.” PhD dissertation, The Univ. of Texas at Austin, Austin, Tex.
Draper Aden Environmental Modeling Inc. (1997). “MOVER multiphase organic vacuum enhanced recovery simulator: Technical documentation and user guide.” Blacksburg, Va.
Faust, C. R., Guswa, J. H., and Mercer, J. W.(1989). “Simulation of three-dimensional flow of immiscible fluids within and below the unsaturated zone.” Water Resour. Res., 25(12), 2449–2464.
Forsyth, P. A., and Shao, B. Y.(1991). “Numerical simulation of gas venting for NAPL site remediation.” Adv. Water Resour., 14(6), 354–367.
Gallichand, J., Prasher, S. O., Broughton, R. S., and Marcotte, D.(1991). “Kriging of hydraulic conductivity for subsurface drainage design.” J. Irrig. Drain Eng., 117(5), 667–681.
Kaluarachchi, J. J.(1996). “Effect of subsurface heterogeneity on free-product recovery from unconfined aquifers.” J. Contam. Hydrol., 22(3/4), 19–37.
Li, J. B., Huang, G. H., and Zeng, G. M.(2001). “An integrated decision support system for the management of petroleum-contaminated sites.” J. Environ. Sci. Health, Part A: Toxic/Hazard. Subst. Environ. Eng., 36(7), 1163–1186.
Li, J. B., Huang, G. H., Chakma, A., Zeng, G. M., and Chen, Z. (2002). “Influence of parameter uncertainty on petroleum contaminants distribution in porous media.” Proc. 2002 Int. Technical Conf. on Circuits, Systems, Computers and Communication, Thammasat University, Phuket, Thailand.
McClure, P. D., and Sleep, B. E.(1996). “Simulation of bioventing for soil and ground-water remediation.” J. Environ. Eng., 122(11), 1003–1012.
McCray, J. E.(2000). “Mathematical modeling of air sparging for subsurface remediation: State of the art.” J. Haz. Mat., 72, 237–263.
McCray, J. E., and Falta, R. W.(1997). “Numerical simulation of air sparging for remediation of NAPL contamination.” Ground Water, 35(1), 99–110.
Morshed, J., and Kaluarachchi, J. J.(1998). “Parameter estimation using artificial neural network and genetic algorithm for free-product migration and recovery.” Water Resour. Res., 34(5), 1101–1113.
Nadim, F., Hoag, G. E., Liu, S., Carley, R. J., and Zack, P.(2000). “Detection and remediation of soil and aquifer systems contaminated with petroleum products: An overview.” J. Pet. Sci. Eng., 26(1), 169–178.
O’Melia, B. C., and Parson, D. R. (1996). “Dual-phase vacuum extraction technology for soil and ground-water remediation: A case study.” Volatile Organic Compounds in the Environment, ASTM STP 1261, W. Wang, J. Schnoor, and J. Doi, eds., American Society for Testing and Materials, Philadelphia, 272–286.
Parker, J. C., Zhu, J. L., Johnson, T. G., Kremesec, V. J., and Hockman, E. L.(1994). “Modeling free product migration and recovery at hydrocarbon spill sites.” Ground Water, 32(1), 119–128.
U.S. Army Corps of Engineers. (1999). “Engineering and design—Multi-phase extraction.” Rep. No. EM 1110-1-4010, U.S. Army Corps of Engineers, Washington, D.C.
U.S. Environmental Protection Agency (USEPA). (1995). “How to evaluate alternative cleanup technologies for underground storage tank sites: A guide for corrective action plan reviewers.” Rep. No. EPA 510-B-95-007, U.S. Environmental Protection Agency, Washington, D.C.
U.S. Environmental Protection Agency (USEPA). (2001). “Abstracts of remediation case studies. Vol. 5.” Rep. No. EPA 542-R-01-008, U.S. Environmental Protection Agency, Washington, D.C.
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Copyright © 2003 American Society of Civil Engineers.
History
Received: Dec 4, 2002
Accepted: Dec 12, 2002
Published online: Mar 14, 2003
Published in print: Apr 2003
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