Comparing the performance of landfill liner systems |
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Authors: | Jin-Chun Chai Norihiko Miura |
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Institution: | (1) Institute of Lowland Technology, Saga University, 1 Honjo, Saga 840-8502, Japan Tel. +81-952-28-8580; Fax +81-952-28-8190 e-mail: chai@cc.saga-u.ac.jp, JP;(2) Department of Civil Engineering, Saga University, Saga, Japan, JP |
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Abstract: | Some minimum design requirements for landfill liner systems were compared, and the performance of several Japanese liner
systems was investigated by two-dimensional (2D) contaminant transport analysis. We demonstrate that (1) the performance of
each system specified by the Japanese Ministry of Health and Welfare (at present the Ministry of Health, Labor, and Welfare)
varies, (2) the adsorption characteristics of the mineral barrier has a significant effect on the contaminant transport process,
and (3) a geomembrane layer in the barrier system is very efficient in reducing the peak concentration of contaminants in
the groundwater beneath a landfill even if the geomembrane has a number of defects. Under the conditions considered, the analysis
results show that a liner system without a geomembrane layer should be avoided.
Received: July 4, 2001 / Accepted: March 26, 2002 |
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Keywords: | Landfill liner Geomembrane Municipal solid waste (MSW) Advection– diffusion analysis Adsorption |
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