Pollution control strategy employing an interception-sorption trench

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Authors:Hitchcock, Phillip W.; Smith, David W.
Author Affiliations:Primary:
University of Newcastle, Department of Civil Engineering and Surveying, Newcastle, N.S.W., Australia
Volume Title:Australian Geomechanics
Source:Australian Geomechanics, Vol.27, p.60-67. Publisher: Institution of Engineers, Australia, Sydney, N.S.W., Australia. ISSN: 0818-9110
Publication Date:1995
Note:In English. 18 refs.
Summary:The interception-sorption trench method is a simple, cost effective, in-situ groundwater remediation technique. This technique is implemented by excavating a trench down gradient of a polluted area and backfilling the trench with a sorbent material. The contaminant is transported through the soil along the natural hydraulic gradient and over time the contaminant will be sorbed onto the material contained within the trench There are at least two ways in which the interception-sorption trench system can be used for groundwater remediation, namely, a decontamination strategy and a pollution control strategy. The decontamination strategy was discussed by Smith et al (1993) and comprises removing the trench material when all the contaminant is contained within the trench thereby decontaminating the groundwater system. In the case of the pollution control strategy, the sorptive material remains in-situ and the system is designed to reduce the postsorptive trench contaminant concentration to an environmentally acceptable level. This latter option is the subject of this paper and it is shown how the "critical trench thickness" can be calculated using the design charts presented herein.
Subjects:Controls; Ground water; Mathematical models; Pollution; Remediation; Water quality; Interception-sorption trench
Record ID:1996040524
Copyright Information:GeoRef, Copyright 2018 American Geosciences Institute.
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