• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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• 2003.09a
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• pp.399-403
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• 2003

해안의 연약지반에 건설되는 폐기물 매립지는 매립지의 안정성 평가를 위하여 하부기초지반의 침하거동 특성에 대한 분석이 필요하다. 본 연구에서는 현장 침하계측자료를 이용하여 현장 간극비와 현장 압축지수를 역산하여 그 특성을 분석하였다. 그 결과 매립초기에는 상부하중에 의한 유효응력증가가 미소하여 하부기초지반은 과압밀 특성을 나타내고 현장 압축지수 변화가 미소하였으나, 매립이 진행될수록 상부하중이 선행압밀하중을 초과하여 정규압밀영역으로 변화함에 따라 큰 폭의 증가를 보였다.

• Journal of the Korean earth science society
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• v.27 no.4
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• pp.425-432
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• 2006

A seismic tomography using refraction waves is applied to provide information on depth of basement rocks and leachate distribution of the Noeun waste landfill site for the stage of preliminary environmental survey. This method is generally applied to civil and environmental areas. Three lines, apparently perpendicular to the potential leachate flow direction in this site, were installed to investigate the waste landfill site in pseudo three dimensional geometry. The results show that the site is composed of 3 layers and depth of basement becomes shallower at the upstream area of the landfill site than that of the downstream area. Moreover, some parts of the second layer and the basement at the down stream area are partially infiltrated by the leachate, probably related to the disturbed distribution of the different velocity materials within the second layer. In Conclusion, refraction wave tomography is found to be one of the most efficient way to investigate waste landfill site.

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2000.04a
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• pp.282-283
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• 2000

급속한 경제 발전과 인구증가, 일회용품의 증가 둥 사회구조가 대량생산, 대량소비 형태로 변화되면서 폐기물의 처리가 새로운 환경문제로 대두되었다. 도시 생활폐기물의 대부분이 매립 처리되고 있지만, 환경부에서는 매립처리의 비율을 줄이고 2001년까지 소각처리 비율을 25%로 늘릴 계획이다. 1997년에는 도시 생활 폐기물의 63.9%가 매립 처리되고 7.1%는 소각 처리되었으며, 29.0%가 재활용되었다(환경부, 1998). 한편 1995년부터는 쓰레기 종량제의 도입으로 도시쓰레기의 27%가 줄어들었고 재활용되는 쓰레기의 양이 35% 정도 늘어났다. (중략)

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2003.11a
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• pp.327-329
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• 2003

인구의 증가와 그에 따른 문명화/도심화는 필연적으로 쓰레기의 배출량을 증가시켰고, 이에 대한 처리는 중요한 환경문제로 자리매김하고 있다. 현재까지 매립 또는 소각과 같은 방법은 이들 폐기물을 처리하는 가장 기본적이고 중요한 수단으로 간주되고 있다. 따라서 이러한 처리방법과 관련된 기술은 지속적으로 기술적인 향상을 거듭해 왔다. 특히 매립의 경우, 폐기물을 매립하는데 치중하든 과거 시점의 단순한 접근과 달리, 주변 환경의 오염을 최소화하기 위한 친환경적 구조에 대한 배려 및 이들 시설로부터 배출되는 가연성 연료의 회수 및 활용에 대한 고려가 중요한 관심사로 다루어지고 있다. (중략)

• Proceedings of the Korea Air Pollution Research Association Conference
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• 1999.10a
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• pp.413-414
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• 1999

이미 선진국에서는 악취오염의 문제가 대기오염 문제로 관심의 대상이 되고 있다. 일반적으로 악취는 황화수소(H$_2$S), mercaptan류, 아민류 및 기타 자극성 있는 기체상 물질이 사람의 냄새 감각을 자극하여 불쾌감과 혐오감을 주는 냄새로서 정의되어 있다. 본 연구의 목적은 울산의 쓰레기ㆍ폐기물 매립장(삼산/성암/온산)중에서 성암 쓰레기 매립장의 악취 오염도를 분산모델링을 이용한 방법론 개발과 인근 주민의 피해를 예측함과 아울러 차후의 쓰레기ㆍ폐기물 매립장 건설에 있어서 악취오염 제어 및 관리대책을 수립하는데 참고 자료로 활용하고자 한다.(중략)

• Journal of the Korean GEO-environmental Society
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• v.1 no.1
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• pp.65-70
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• 2000

Recently, soil-bentonite mixtures are frequently used as impervious liners for waste disposal sites. In the present work, bentonite composite liner systems have been developed by utilizing Korean zeolitic bentonites. The geomechanical properties of the liner systems, such as strength hydraulic conductivity, etc. have also been studied. The laboratory and field test results showed that uniaxial strengths of the system were improved by addition of bentonite and CaO-based additive to the upper and lower layer of the liner systems, respectively. Hydraulic conductivity values measured on field liner systems showed less $1{\times}10^{-3}cm/s$, which is considered to be minimum regulation requirement for waste disposal sites.

• Journal of Energy Engineering
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• v.25 no.3
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• pp.104-113
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• 2016

This study analyzes correlation between methane gas production and injection of food waste water to motivate to expand renewable energy as a way of GHG (Green House Gas) mitigation to achieve the national GHG target proposed for the climate agreement in Paris last year. Pretreatment of food waste water was processed with pH 6 at $35^{\circ}C$ and used the fixed-bed upflow type reactor with the porous media. As a result of operation of pilot-scaled bioreactor with food waste water, the methane gas production was 6 times higher than the methane gas production of control group with rain water. The average production of methane was $56{\ell}/day/m^3$ which is possible to produce $20m^3$ of methane in $1m^3$ of landfill. As a way of energy source, when it is applied to the landfill over $250,000m^3$, it is also able to achieve financial feasibility along with GHG reduction effect. GHG reductions of $250,000m^3$ scale landfill were assessed by registered CDM project and the annual amount of reductions was 40,000~50,000 $tCO_2e$.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.12 no.3
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• pp.15-22
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• 2012

For the construction of safe and clear urban environment, it is necessary that we identify the rubbish waste volume and we know the accuracy volume. In this paper, we developed the algorithm which computes the waste volume using the stereo camera for enhancing the environment of waste repository. Using the stereo vision camera, we first computed the distortion parameters of stereo camera and then we obtained the points cloud of the object surface by measuring the target object. Regarding the points cloud as the input of the volume calculation algorithm, we obtained the waste volume of the target object. For this purpose, we suggested two volume calculation algorithm based on the uniform meshing method. The difference between the measured volume such as today's one and yesterday's one gives the reposit of waste volume. Using this approach, we can get the change of the waste volume repository by reading the volume reports weekly, monthly and yearly, so we can get quantitative statistics report of waste volume.

• Geotechnical Engineering
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• v.23 no.4
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• pp.25-32
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• 2007

• 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