• Title/Summary/Keyword: 매립폐기물

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A Study on the Strength of Geotextile and the Influence of Settlement in a Waste Landfill (폐기물 매립지 인공합성 차수재 강도와 침하영향에 관한 연구)

  • 장연수;임학수;권강오
    • Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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    • 2000.11a
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    • pp.241-245
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    • 2000
  • In this paper, the results of the direct shear interface friction test is introduced to understand interface friction between geosynthetic materials that are required for analyzing slope stability of the liner system of waste landfills. Tensile stresses that occur in a liner system due to differential settlement with waste load are estimated using FLAC. It was shown that HDPE/geocomposite inteface friction angle is 11.9$^{\circ}$, HDPE/wastes is 12.0$^{\circ}$ and geotextile/wastes is 28.0$^{\circ}$. Tensile stress due to settlement in a foundation of landfill is well within the limits of tensile strength regulated by waste treatment law.

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Investigation on Leachate Leakage Around Waste Landfill (폐기물매립지 주변 침출수 누출조사)

  • 정하익;김상근;정길수;진현식;조동행;이창열
    • Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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    • 1999.10a
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    • pp.69-72
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    • 1999
  • Now there has been a steady increase in the field of geoenvironmental engineering projects where geotechnical engineering has been combined with environmental concerns. Many of these projects involve some investigation on leachate flume in the waste landfill. In this study, investigation on leachate around the waste landfill was carried out to detect the leachate leaking area. Many techniques such as geophysical, drilling and sampling method were applied. As a result of this investigation, the concentration of leachate and the point of leachate leaking around landfill were analysed.

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Filter Clogging of Leachate Collection and Removal System at Waste Landfill (폐기물 매립지 침출수 집.배수 시스템에서 필터 막힘에 관한 연구)

  • 고재학;이재영;노희정
    • Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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    • 1999.10a
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    • pp.77-80
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    • 1999
  • In this study, to evaluate the performance of leachate collection and removal system, the clogging of geotextile filter was tested and simulated for HELP. As a result of clogging test, the all permeability of geotextiles were decreased rapidly in several day. Also, $Ca^{2+}$ and CODcr concentrations were decreased during test. In model simulation for HELP, Daily discharge volume was shown insignificant change with the filter clogging. however, this result may effect on increasing of the hydraulic gradient in waste layer.r.

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A Study on Unused Energy Management of Jeju City Waste Environment Center (제주시 폐기물환경사업소의 미활용에너지 활용방안 연구)

  • Kim, S.H.;Kwon, K.R.;Park, Y.C.
    • Journal of Power System Engineering
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    • v.8 no.1
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    • pp.48-54
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    • 2004
  • In this study, waste heat of Jeju City Waste Environment Center is investigated and the utilization method is suggested with economical analysis of additional investment that needed for new facility. Energy balance of the typical facilities is considered in this study such as incineration plant and LFG power plant. The payback period of the investment which is used for the LFG power plant waste heat utilization facility is about 2.4 years and the economic profit of the facility during 10 years operation is up to 926 million won.

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A Study on the Vibration Effect by Dynamic Compaction Method at Waste Landfill (폐기물 매립지반에서 동다짐공법에 의한 진도영향에 관한 연구)

  • Chun, Byung-Sik
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.5 no.1
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    • pp.141-148
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    • 2001
  • Dynamic compaction is the ground improvement method by applying the impact energy. This impact energy can damage to adjacent structure in urban area. Therefore, if dynamic compaction method is applied, careful attention should be payed to surrounded structures. In this study, the method was performed in waste landfill and the frequency of vibrations were measured according to each distances, drop-heights, and vibrating directions. The measured data show that particle velocity bas low frequency and it is greatest in longitudinal direction. There was little differences between Maynes suggestion and measured data. Therefore, Maynes suggestion can be adopted if the range of vibration can be predicted. Also, It was found that minimum 45m distance is needed in order to satisfy the administrative code if dynamic compaction method is applied.

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A Study on the Component Analysis of Municipal Solid Wastes and the Effect of Landfill Leachate on the Evironment (폐기물 성상분석과 매립장 침출수가 환경에 미치는 영향에 관한 연구)

  • 윤오섭
    • Journal of Environmental Health Sciences
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    • v.18 no.1
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    • pp.58-62
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    • 1992
  • The objective of this study is to investigate the generation rates, composition, propertion and lower heating values of each material in the municipal solid wastes(MSW) as well as the effect of landfill leachate on the environment in Taejon. The results are as follows: 1. The annual average generation rate of MSW in Taejon is approximately 1.7kg/c.d. 2. The weight percent of combustible matters is on average 80 and the lower heating value of MSW is measured to be more than 1,700 kcal/kg after removing the briquette component. 3. It is necessary for us to take a proper management system for leachate treatment in the landfill because it has many problems in the sewage and groundwater. 4. It is recommeded that MSW be treated by multiple methods such as the sanitary landfill, resources and recovery, composting and incineration.

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Recent Trends in Domestic Landfill Liners (국내폐기물 매립장 치수재 현황조사 연구)

  • 정하익;홍성완
    • Proceedings of the Korean Geotechical Society Conference
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    • 1994.03a
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    • pp.65-74
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    • 1994
  • In this paper, various aspects of landfill liners such as guide of liner installation, type of bottom liners and vertical barriers, domestic companies producing and dealing liners, quality assurance and control of liners, are investigated. Although sanitary landfilling of domestic municipal wates has begun at the last decade, we still need to strengthen the regulation for designing and constructing the liner systems and to diversify the types of liners used in the landfills. Technologies of quality control for selecting and installing landfill liners should be improved as soon as possible. In order to develop the technologies and to slove th problems related to landfill liners, more efforts should be taken among the engineers and the agencies who are interested in maintraining safe subsurface environments.

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GROUNDWATER POLLUTION CONTROL IN UNCONTROLLED WASTE LANDFILLS (폐기물 매립지 지반내에서의 지하수오염제어)

  • Lee, Gwang-Yeol;Jang, Yeon-Su;Han, Il-Yeong
    • Proceedings of the Korean Geotechical Society Conference
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    • 1994.03a
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    • pp.75-82
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    • 1994
  • Groundwater in waste landfills can be contarninated by leachates produced from wastes and flow down toward rivers. These accidents are easily discovered in uncontrolled landfill sites. In this study, applications for controlling groundwater pollution and protecting river pollution were studied using installation of cut-off walls around the waste landfill. Analyses for the efficiency and applicability of the cut-off wall were made under environmental, economical anc technical considerations. Cut-off walls were installed at the upgradient and the downgradient. prediction analyses for the hydraulic head distribution over the site were made for concerning with the final cover and without the final cover. Also, the hydraulic head distribution was predicted with well-pumping on both cases, upgradient cut-off wall and downgradient cut-off wall.

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Characteristics of Contaminant Migration through Hardened Liner and Seashore Clay Considering Effective Diffusion (유효확산을 고려한 고화차수층과 해안점성토층을 통한 오염물이동 특성)

  • 장연수;홍경택
    • Journal of the Korean Geotechnical Society
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    • v.17 no.4
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    • pp.49-55
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    • 2001
  • 본 논문에서는 서해안 폐기물 매립지 하부의 점성토와 고화차수재를 재료로 수행된 확산시험 결과와 현장 조건을 적용하여 오염물이동성에 대한 수치해석을 수행하였다. 무기화합물이 하부 차수재와 원지반퇴적층으로 이동되는 일차원 이동 특성을 대상으로 하였으며 일차원 용질이동해석 프로그램 CDFD(convection-dispersion finite difference)를 현장의 비균질한 지층에 이용할 수 있도록 수정하여 적용하였다. 그 결과 원지반점성토를 통한 용질이동 메카니즘에 확산이 기여하는 정도가 50%로 매우 큰 영향을 갖고 있음을 보여주며 원지반 투수계수가 클수록 인공차수층의 필요성이 증대됨을 알 수 있었다.

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Geocomat를 활용한 폐기물매립장의 사면안정성 검토

  • 신은철;이성근;이영재
    • Proceedings of the Korean Geotechical Society Conference
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    • 2001.06a
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    • pp.45-54
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    • 2001
  • In this study, slope stability analysis of LCRS(Leachate Collection Removel System) in waste landfill was peformed by large scale field test. Geocomat is new type of geocomposite product. Gecomat is a sort of Geocomposite product. It is composed of nonwoven geotextiles, woven geotextile, and geonet. Large scale field tests were performed on the slope of different two LCRSsections with static loading condition. One is LCRS section witch consist of GCL, HDPE and Geocomat, another is GCL, HDPE, and woven type geocomposite. The behavior of geosynthetics lined slope was monitored by incorporating instrumentation including vertical soil pressure meter, settlement plate, strain gauges, potential meter, displacement pin.. Based on the field monitoring, the Geocomat LCRS section is less sliding than the conventional geocomposite LCRS section.

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