• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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• 1996.04a
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• pp.83-91
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• 1996

• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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• 1999.06a
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• pp.39-58
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• 1999

• Proceedings of the Korean Environmental Sciences Society Conference
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• 2019.10a
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• pp.47-47
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• 2019

• Geotechnical Engineering
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• v.16 no.10
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• pp.33-39
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• 2000

• Magazine of the Korean Society of Agricultural Engineers
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• v.43 no.6
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• pp.44-53
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• 2001

• Geotechnical Engineering
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• v.16 no.11
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• pp.23-33
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• 2000

• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
• /
• 1999.04a
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• pp.66-67
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• 1999

• Proceedings of the Korean Institute of Landscape Architecture Conference
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• 2002.10a
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• pp.26-29
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• 2002

• Journal of the Korea Organic Resources Recycling Association
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• v.18 no.2
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• pp.45-54
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• 2010

Field study was conducted for 5 months to investigate the effect of leachate recirculation on aerobic landfill stabilization at active landfilling site. The area of field experiment was $24{\times}24m$ and 9 vertical air injection wells with screen ranging 3~9 m were installed. Aerobic landfill operation for 5 months increased average internal landfill temperature to $70^{\circ}C$ and 8 % of landfill height was settled down. $94m^3$ of leachate was recirculated for 1 month to increase moisture content of landfill to favor microbial degradation of organic matter, which resulted in temporary increase of groundwater level and anaerobic environment. But leachate recirculation triggered increase of internal landfill temperature of neighboring monitoring well. Because excessive leachate recirculation decreased internal landfill temperature by cooling effect, internal landfill temperature should be checked to avoid abrupt decrease of temperature during leachate recirculation. Also, to prevent anaerobic environment, intermittent leachate recirculation was recommended.

• Journal of the Korean Society of Groundwater Environment
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• v.1 no.2
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• pp.85-89
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• 1994

Groundwater and soil contamination by the leak of leachates from the waste disposal site (WDS) is one of the serious environmental problems, and leachates are generally produced by the biogeochmical decomposition and/or precipitation in the WDS. At the Sindae-dong waste disposal site in Taejon, the average Cu, Pb and Zn concentrations in the surrounding soils are higher than those in other Korean soils but these are not high enough to cause any harmful effect to man through the crop plants. Copper, Pb and Zn are not detected in the groundwater samples but the pH of the sample is 5.6 which is not suitable for the drinking water. In contaminated soil samples, the heavy metal concentrations are higher in subsurface soil than in surface soil and it may be influenced by the leachates in groundwater. With the electric resistivity method, the water contains layers are found in contaminated soils and the resistivity values are considerably low because of the dispersion of plume by the leak of leachates. According to the distance from the leak point of leachate, resistivity values increased and heavy metal concentraions in soils decreased due to the reduction of plume.