Using a groundwater flow model to evaluate and enhance operation of a vapor extraction system

John Ragan, Kenneth J. Quinn, Keith E. Bandt, Mark J. Leibrock

Research output: Contribution to conferencePaper

Abstract

The vapor extraction system at a former waste disposal site was modeled in order to determine gas flow paths under the current operating condition and to evaluate a method for enhancing system operations. The model was three-dimensional finite-difference numerical model that simulates the movement of a fluid through porous media. The model was initially developed for groundwater flow, thus requiring appropriate conversions from hydraulic to pneumatic properties. The model was calibrated using pilot-study and full-scale operational data. Results showed that the model offers the visualization of gas flow paths under different operating scenarios, hence allowing the adjustment of extraction rates to eliminate stagnation zones and target the highest air velocities to the zones of highest VOC concentrations.

Original languageEnglish (US)
Pages1-13
Number of pages13
Publication statusPublished - Dec 1 1995
EventProceedings of the 1995 18th International Madison Waste Conference - Madison, WI, USA
Duration: Sep 20 1995Sep 21 1995

Other

OtherProceedings of the 1995 18th International Madison Waste Conference
CityMadison, WI, USA
Period9/20/959/21/95

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All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Ragan, J., Quinn, K. J., Bandt, K. E., & Leibrock, M. J. (1995). Using a groundwater flow model to evaluate and enhance operation of a vapor extraction system. 1-13. Paper presented at Proceedings of the 1995 18th International Madison Waste Conference, Madison, WI, USA, .