Three-Dimensional Numerical Simulation of Saltwater Extraction Schemes to Mitigate Seawater Intrusion due to Groundwater Pumping in a Coastal Aquifer System
Publication: Journal of Hydrologic Engineering
Volume 17, Issue 1
Abstract
A series of three-dimensional numerical simulations using a multidimensional hydrodynamic dispersion numerical model was performed to analyze various saltwater extraction schemes for mitigating seawater intrusion attributed to groundwater pumping in a coastal aquifer system. A steady-state numerical simulation was performed first to obtain initial (i.e., pregroundwater pumping) steady-state conditions before groundwater pumping, and then a transient-state numerical simulation was performed to obtain intermediate (i.e., postgroundwater pumping) steady-state conditions during groundwater pumping. In the subsequent series of transient-state numerical simulations as scenario and sensitivity analyses, four different saltwater extraction factors such as the amount of saltwater extraction, the number of extraction wells, the horizontal location of extraction wells, and the vertical interval of saltwater extraction were considered to determine an optimal saltwater extraction scheme for the coastal aquifer system threatened with seawater intrusion. The numerical simulation results show that seawater intrusion may be better mitigated when saltwater is extracted at 30% (up to 50%) of the groundwater pumping rate from a single extraction well, which is located horizontally midway between the pumping well and the coastline and is screened through the whole sand aquifer.
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Acknowledgments
This work was supported by the Sustainable Water Resources Research Center of the 21st Century Frontier Research and Development Program, Ministry of Education, Science and Technology, Republic of Korea. This work was also supported in part by the Brain Korea 21 Project, Ministry of Education, Science and Technology, Republic of Korea. The writers would also like to thank the three anonymous reviewers for their invaluable and constructive comments.
References
Atkinson, S. F., Miller, G. D., Curry, D. S., and Lee, S. B., eds. (1986). Salt water intrusion: Status and potential in the contiguous United States, Lewis Publishers, Chelsea, MI.
Bear, J. (1972). Dynamics of fluids in porous media, American Elsevier, New York.
Bear, J., Cheng, A. H. D., Sorek, S., Ouazar, D., and Herrera, I., eds. (1999). Seawater intrusion in coastal aquifers: Concepts, methods and practices, Kluwer Academic, Norwell, MA.
Carsel, R. F., and Parrish, R. S. (1988). “Developing joint probability distributions of soil retention characteristics.” Water Resour. Res., 24(5), 755–769.
Cheng, A. H. D., and Ouazar, D., eds. (2004). Coastal aquifer management: Monitoring, modeling, and case studies, Lewis, Boca Raton, FL.
Cheng, J. R., Strobl, R. O., Yeh, G. T., Lin, H. C., and Choi, W. H. (1998). “Modeling of two-dimensional density-dependent flow and transport in the subsurface.” J. Hydrol. Eng., 3(4), 248–257.
Das, A., and Datta, B. (2000). “Optimization based solution of density dependent seawater intrusion in coastal aquifers.” J. Hydrol. Eng., 5(1), 82–89.
Dhar, A., and Datta, B. (2009). “Saltwater intrusion management of coastal aquifers. I: Linked simulation-optimization.” J. Hydrol. Eng., 14(12), 1263–1272.
Domenico, P. A., and Schwartz, F. W. (1990). Physical and chemical hydrogeology, Wiley, New York.
Fetter, C. W. (1994). Applied hydrogeology, 3rd Ed., Prentice-Hall, Upper Saddle River, NJ.
Freeze, R. A., and Cherry, J. A. (1979). Groundwater, Prentice-Hall, Englewood Cliffs, NJ.
Jorreto, S., Pulido-Bosch, A., Gisbert, J., Sánchez-Martos, F., and Francés, I. (2009). “The fresh water-seawater contact in coastal aquifers supporting intensive pumped seawater extraction: A case study.” Comptes Rendus Geosci., 341(12), 993–1002.
Kacimov, A. R., Sherif, M. M., Perret, J. S., and Al-Mushikhi, A. (2009). “Control of sea-water intrusion by salt-water pumping: Coast of Oman.” Hydrogeol. J., 17(3), 541–558.
Kim, J. H. (2001). “Hydrogeochemical study on shallow groundwater at the coastal area of Kimje.” M.S. thesis, Seoul National Univ., Seoul.
Newport, B. D. (1977). “Salt water intrusion in the United States.” Special Rep. No. EPA-600/8-77-011, U.S. Environmental Protection Agency, Ada, OK.
Park, C. H., and Aral, M. M. (2008). “Saltwater intrusion hydrodynamics in a tidal aquifer.” J. Hydrol. Eng., 13(9), 863–872.
Sherif, M. M., and Hamza, K. I. (2001). “Mitigation of seawater intrusion by pumping brackish water.” Transport Porous Media, 43(1), 29–44.
Shrivastava, G. S. (1998). “Impact of sea level rise on seawater intrusion into coastal aquifer.” J. Hydrol. Eng., 3(1), 74–78.
Todd, D. K. (1974). “Salt-water intrusion and its control.” J. American Water Works Association, 66(3), 180–187.
van Dam, J. C. (1999). “Exploitation, restoration and management.” Seawater intrusion in coastal aquifers: Concepts, methods and practices, J. Bear, A. H. D. Cheng, S. Sorek, D. Ouazar and I. Herrera, eds., Kluwer Academic, Norwell, MA, 73–125.
van Genuchten, M. Th. (1980). “A closed-form equation for predicting the hydraulic conductivity of unsaturated soils.” Soil Sci. Soc. Am. J., 44(5), 892–898.
Yeh, G. T. (1999). Computational subsurface hydrology: Fluid flows, Kluwer Academic, Norwell, MA.
Yeh, G. T. (2000). Computational subsurface hydrology: Reactions, transport, and fate, Kluwer Academic, Norwell, MA.
Yeh, G. T., Cheng, J. R., and Cheng, H. P. (1993). “2DFEMFAT: A 2-dimensional finite element model of density-dependent flow and transport through saturated-unsaturated media, version 2.0.” Technical Rep., Dept. of Civil and Environ. Eng., Pennsylvania State Univ., University Park, PA.
Yeh, G. T., Cheng, J. R., and Cheng, H. P. (1994). “3DFEMFAT: A 3-dimensional finite element model of density-dependent flow and transport through saturated-unsaturated media, version 2.0.” Technical Rep., Dept. of Civil and Environ. Eng., Pennsylvania State Univ., University Park, PA.
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Published In
Journal of Hydrologic Engineering
Volume 17 • Issue 1 • January 2012
Pages: 10 - 22
Copyright
© 2012 American Society of Civil Engineers.
History
Received: Sep 7, 2009
Accepted: Apr 8, 2011
Published online: Apr 12, 2011
Published in print: Jan 1, 2012
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