Capture flows of funnel-and-gate reactive barriers without gravel packs

H. Klammler, K. Hatfield, A. Kacimov

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Permeable reactive barriers (PRBs) are a passive in-situ technology, which is based on the interception and physical, chemical and/or biological remediation of a contaminant plume through installation of reactive material in an aquifer. Previous work of the authors includes analytical approaches in two dimensions (horizontal plane) based on the conformal mapping technique that allows for the determination of the groundwater flow fields and capture zones of PRBs of different types. Solutions assume that the permeability kr of the reactive material itself is high with respect to the surrounding aquifer permeability ka or that highly permeable gravel packs are present to equilibrate the hydraulic heads at the up and down-gradient faces of the reactor. Respective results include a simple relationship Q(R) between capture flow Q and reactor Darcian hydraulic resistance R. Based on the same technique, the present work gives an exact solution for funnel-and-gate (FG) and velocity equalization wall (VEW) PRBs without gravel packs for the particular case of kr = ka. Furthermore, a numerical finite difference study is performed to show that Q(R) is a good approximation (with errors in the 1% range of maximum capture flow Q(0)) for FG and VEW PRBs of arbitrary geometric configurations and arbitrary values of kr/ka, even in the absence of highly permeable gravel packs at the reactor entrance and exit faces.

Original languageEnglish
Title of host publicationAdvances in Fluid Mechanics VIII, AFM 2010
Pages319-330
Number of pages12
Volume69
DOIs
Publication statusPublished - 2010
Event8th International Conference on Advances in Fluid Mechanics, AFM 2010 - Algarve, Portugal
Duration: Sep 15 2010Sep 17 2010

Other

Other8th International Conference on Advances in Fluid Mechanics, AFM 2010
CountryPortugal
CityAlgarve
Period9/15/109/17/10

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Keywords

  • aquifer
  • conformal mapping
  • contaminant plume
  • groundwater
  • passive remediation
  • PRB
  • Schwarz-Christoffel

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Science(all)
  • Mathematics(all)

Cite this

Klammler, H., Hatfield, K., & Kacimov, A. (2010). Capture flows of funnel-and-gate reactive barriers without gravel packs. In Advances in Fluid Mechanics VIII, AFM 2010 (Vol. 69, pp. 319-330) https://doi.org/10.2495/AFM100281