• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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• 2001.04a
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• pp.124-127
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• 2001

The purpose of this study is to investigate and evaluate management status of use-completed landfill in Kyunggido area and characteristics of its surrounding soil contamination. The soil samples showed Showed the anxious standard of soil contamination. The effect of liner system and leachate treatment unit showed very low because of showing similar concentration with non system landfill. Therefore, the further supplementation of leachate treatment unit, rainfall exclusion unit, LFG exclusion unit etc. must be performed to ensure a efficient management for landfills.

• Journal of Environmental Science International
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• v.8 no.5
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• pp.607-610
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• 1999

The odor removal of landfill site leachate was carried out using pyroligenous liquid. The constituent elements of pyroligenous liquid and leachate were also analysed, employing Atomic Absorption Spectroscopy(AAS). Before order removal, the heavy metal ions such as Pb, Zn, Cu, Mn, Fe and Ni, in pyroligenous liquid were detected with ultra trace level. However, in this liquid, other metal ions such as As, Hg and Cd were not observed. The optimum condition for removing odor fromthe leachate was observed in 15 times dilution of pyroligenous liquid. Also, the degree of outlet odor was 1. Furthermore, the concentration of odor constituent compounds, e.g. $H_2S, NH_3, NH_2$ and $CO_2$ in the leachate was remarkably reduced. Finally, water quality of the leachate was improved.

• Journal of Wetlands Research
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• v.2 no.2
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• pp.109-116
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• 2000

The equipment of a landfill need whole cut off facilities so that leachate generated from the landfill primarily do not leak to the ocean. Also, the whole collected leachate need a consecutive clarification treatment to discharge. A method is considered the best among the three alternatives. The merits of this method are as follows; have no secondary pollution. can cut down the expense of treatment, have good effects on preventing external leakage, don't need a leachate well, reliable quality control and easy post management. The weaknesses of this method are as follows; need a thorough survey about underground water and quality of the soil, need a special process to use as the land.

• 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.

• Journal of the Korean Geotechnical Society
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• v.20 no.4
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• pp.49-56
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• 2004

Tracer tests were conducted to investigate leachate outflow through damaged parts on HDPE liner subject to puncture loads in a closed landfill. Natural gradient tracer test was used with two different types of tracers, iodide and Rhodamine WT. Tracers were selected under careful consideration of chemical components of leachate. Five injection wells with fourteen detection points were installed and operated throughout the test site. In this study, it is found that Iodide and Rhodamine WT are applicable and effective for leachate leakage investigation on waste landfills. Also, it is concluded that considerable amount of leachate was leaked through the rain water drain box and side wall of drain box.

• Journal of the Korean Geosynthetics Society
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• v.7 no.1
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• pp.31-37
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• 2008

The settlement occurring during landfill construction often causes a damage of drainage system. Clogging can reduce the hydraulic conductivity of the Leachate Collection and Drainage System, which results in the increase of leachate level within the landfill. Consequently, the insulation ability of leachate will be decreased. The main purpose of this project is to estimate a newly designed reinforced drainage geotextile (RDG) combining non-woven fabrics with geogrid for minimizing the destruction of drainage layer as well as evaluating RDG's application in the leachate collection and drainage system. Thus, the project observed the permittivity changes of RDG, and evaluated the drainage ability using RDG in the leachate collection and drainage system.

• Journal of Soil and Groundwater Environment
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• v.6 no.2
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• pp.31-38
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• 2001

An illegal landfill In Korea was evaluated in a view of environmental quality to figure out reusing the area. The sampling spots were selected at a point in the landfill and three points in it's around area(two points in a paddy soils and one in a farm field). The eleven pollutants regulated in the Korean Soil Environmental Preservation Act (KSEPA) were analysed from the soil sample with the method of the KSEPA. As the results of the analysis the level of concentration with most samples indicated the requirement of the KSEPA. The concentration of soil samples met the standard: however, some pollutants in the ground water and leachate showed higher concentration than that of the requirement. Therefore, we must consider the treatments of the pollutants in the ground water and leachate when designing this landfill area for reusing.

• Environmental Engineering Research
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• v.25 no.3
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• pp.374-383
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• 2020

Landfill gas (LFG) emissions from a given amount of landfill waste depend on the carbon flows in the waste. The objective of this study was to more accurately estimate the first-order decay parameters through methane (CH₄) and carbon flow balances based on the analysis of a full-scale landfill with long-term data and detailed field records on LFG and leachate. The carbon storage factor for the case-study landfill was 0.055 g-degradable organic carbon (DOC) stored per g-wet waste and the amounts of DOC lost with the leachate were less than 1.3%. The appropriate CH₄ generation rate constant (k) for bulk waste was 0.24 y-1. The the CH₄ generation potential (L0) values ranged 33.7-46.7 m3-CH₄ Mg-1, based on the fraction of DOC that can decompose (DOCf) value of 0.40. Results show that CH4 and carbon flow balance methods can be used to estimate model parameters appropriately and to predict long-term carbon emissions from landfills.

• Proceedings of the Korean Geotechical Society Conference
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• 1993.05a
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• pp.28-44
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• 1993

Remediation actions in uncontrolled landfill site should be conducted after the investigation of contamination status and potential health risk or damage. Based on the above, proper control measures should be established and operated. Also continuous monitoring should be followed. In this study, the status of ground water contamination around Nanji Landfill Site was investigated. Monitoring wells were installed around the landfill and ground water was sampled once a month and analyzed. Water quality of each monitoring well was different depending on the horizontal and vertical distance from the landfill, and the seasonal leachate characteristics were not significantly changed because percolating water stayed long time in the deep waste layer. It was predicted that major multivalent cations were mainly precipitated as metal carbonate form, and chemical mass balances (CMBs) could be applied for the apportionment of leachate contamination to ground water quality of surrounding areas of Nanji Landfill. Parameters required to estimate pollutant flux to the receptor near landfill were listed and discussion to get these parameters was made. Finally, based on the above data, control measures of ground water contamination were suggested and discussed.

• Journal of the Korean GEO-environmental Society
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• v.3 no.3
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• pp.45-51
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• 2002

In this study, it was investigated if the outflow from incised slope in a new constructed landfill site flowed into it from the neighboring existing landfill site. The water quality of the outflow was compared with the leachate of the neighboring existing landfill site, monitoring well, stream water, and underground water near by the new constructed landfill site. We examined a result of filtering experiment of the leachate and $NH_3$ and $H_2S$ analysis of odor in the outflow site. The results of the experiments were the pollution level of the outflow from the constructed site was quiet high, relatively, and that the micro-analysis of organic materials from the outflow and the odor analysis of organic materials were related with the outflow results. So we supposed that the outflow was affected with the leachate of the neighboring existing landfill site and countermeasures should be made prior to construction.