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Hydrodynamic barriers for effective site remediation

Title:

Hydrodynamic barriers for effective site remediation

Zhao, Xiaopeng (2002) Hydrodynamic barriers for effective site remediation. Masters thesis, Concordia University.

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Abstract

Conventional pump-and-treat (P&T) is an applicable component of many remedial systems. However, such a system will not be appropriate to achieve restoration in portions of many sites due to hydrogeologic and contaminant-related limitations. This includes the presence of significant accumulation of DNAPLs (denser-than-water nonaqueous phase liquids) trapped below the water table. Here chemical enhancements to P&T shows some promise by mobilizing or dissolving the contaminants. However, this will make a portion of the injected chemicals and the contaminant to cross the boundary of the targeted site that causes the loss of chemicals and results in pollution migration to uncontaminated areas. To confine the flow of the injected chemical to the target site, traditionally one sets up physical barriers around the boundaries of the site. In the present study, simple hydrodynamic principles related to image wells are used to provide hydrodynamic barriers around the site. Simple mathematical model and laboratory experiments were developed to assess the effectiveness of hydrodynamic barriers. The study shows that the degree of leakage of the chemicals injected into the target site can be controlled by the proper choice of the system of image wells set outside the target area. For more realistic systems, further study is needed to define its applicability

Divisions:Concordia University > Faculty of Engineering and Computer Science > Building, Civil and Environmental Engineering
Item Type:Thesis (Masters)
Authors:Zhao, Xiaopeng
Pagination:xv, 102 leaves : ill. ; 29 cm.
Institution:Concordia University
Degree Name:Theses (M.A.Sc.)
Program:Building, Civil and Environmental Engineering
Date:2002
Thesis Supervisor(s):Ramamurthy, A. S
ID Code:2157
Deposited By:Concordia University Libraries
Deposited On:27 Aug 2009 13:25
Last Modified:08 Dec 2010 10:25
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