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Estimation of water movement in a closed landfill based on tracer tests in gas vents and changes in leachate quality

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Title: Estimation of water movement in a closed landfill based on tracer tests in gas vents and changes in leachate quality
Authors: Kim, H. J. Browse this author
Endo, D. Browse this author
Sato, M. Browse this author
Matsuo, T. Browse this author
Matsuto, T. Browse this author
Keywords: Closed landfill
Remediation works
Tracer test
Leachate flow
TOC
Issue Date: Aug-2009
Publisher: Elsevier Ltd.
Journal Title: Waste Management
Volume: 29
Issue: 8
Start Page: 2308
End Page: 2315
Publisher DOI: 10.1016/j.wasman.2009.03.011
PMID: 19356917
Abstract: Leachate accumulation was found in Nakazono landfill, in Asahikawa, Japan because of an insufficient leachate collection and drainage system. In order to lower leachate level in the landfill and to promote stabilization of waste, many passive gas vents were installed as well as leachate collection vaults. This study aimed to evaluate the distribution and movement of leachate in the landfill by determining leachate level and tracer test in the gas vents. The water level varied widely among the gas vents and depended mainly on the original ground level and the depth of the vent. Leachate velocity also showed a wide variation. The leachate velocity was high in the upper layers of the saturated zone in a gas vent. However, this is only the superficial velocity caused by an inflow from unsaturated layers. A sharp decrease in TOC, which was observed in most of the gas vents by installation of vents, were likely due to the effect of aerobic biodegradation in the unsaturated layer of waste. This effect is limited to the small aerobic zone around the gas vent.
Type: article (author version)
URI: http://hdl.handle.net/2115/38782
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 金 喜鍾

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