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KMID : 0382420010270010056
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Korean Journal of Environmental Health Society
2001 Volume.27 No. 1 p.56 ~ p.62
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A Fundermental Study on Stabilization in Municipal Waste Landfill Site
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Kim Ean-Ho
Kim Soon-Ho
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Abstract
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The investigation was carried out to analyze the generation and the composition of landfill gas generated from inserted pipe wells into the underground by boring operation and also study the undercomposed waste characteristics by open-cut test at S. waste landfill site in Pusan city. Pilot test was also conducted for stabilization. The experimental results from this study were summarized as follows; Since BOD matter was easier decomposed than COD matter for continuously biological stabilization in underground, it seemed that BOD and COD_Mn were in the range of 854~4,813 mg/l and 1,156~6,977 mg/l and their ratio were generally as high as 0.55~0.74. As CH₄compositions of generated gas were measured in the range of 37.36~60.1%, we could know that CH₄gas was activity generated. Organic matters by open-cut test averaged 13.4~16.6% at each landfill layer, and considering rate of combustible compositions(36.2~66.5%) for landfilling wastes, they have been activity decomposed. The measured and theoretical values of generated gas in waste landfill site were almost similar to CH₄50.0% and 53.4%, CO₂39.63% and 45.24%, respectively. Underground temperatures were changed in the range of 25.1~28.3℃, they were inclined to rise before and after 0.5℃with heavy depth and long landfill period. From the results of pilot test for stabilization, after 180 days organic matters were actively decomposed beyond 2.2 times in facultative aerobic lysimeter(B) to existing anaerobic lysimeter(A). Therefore, it seemed that landfill site was of beneficial to the conversion of facultative aerobic for stabilization.
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