• 한국지하수토양환경학회:학술대회논문집
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• 한국지하수토양환경학회 1996년도 사용종료 매립지의 안정화 에 관한 국제 세미나
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• pp.87-95
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• 1996

The stabilization and reclamation of old disposal sites is becoming more important as significant numbers of disposal sites are closed and abandoned. This technical paper covers an overview of the key issues and methodologies for stabilizing and constructing facilities on old landfills. The slide portion of this presentation also include photographs showing actual construction activities. The key issues that are prevalent in remediating and closing old landfills are : correcting the stormwater flow, leachate breakout, constructing cover caps, controlling landfill gas migration and odors, cleanup groundwater and stabilizing side slopes. Some key techniques for constructing facilities on old landfills include： use of piling, installation of active landfill gas systems, providing LFG barriers under buildings, using utilidors and flexible utility interfaces and designing for site settlement. This Paper provides proven conceptual methods for solving these problems.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2007년 가을학술발표회
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• pp.558-569
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• 2007

It is important to obtain real-time data from long-term monitoring of landfills and develop leachate leakage detection system for the integrated management of landfills. A novel real time monitoring system and early leakage detection system was suggested in this study. The suggested monitoring system is composed of two parts; (1) a set of moisture sensors which monitor the areas surrounding the landfill, and (2) a set of moisture and temperature sensors which monitor the landfill inside. For the assessment for landfills stabilization, real-time monitoring system was evaluated in dry and wet cell of pilot-site. In addition, the grid-net electrical conductivity measurement system was also suggested as early leakage detection system. In this study, the field applicability of suggested systems was evaluated through pilot-scale field tests. The results of pilot-scale field model tests indicate that the grid-net electrical conductivity measurement method can be applicable to the detection of landfill leachate at the initial stage of intrusion, and thus has a potential for monitoring leachate leakage at waste landfills.

• 환경위생공학
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• 제13권3호
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• pp.79-84
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• 1998

The study result on the domestic waste occurrence and admistration condition of Iksan City as follows ; 1. The year of 1995 has observed a radically decreasing ratio of per capita waste generation compared to the previous year by 26.2%, owing to the publication of the new amendment of volume based charge as well as to the rural population included through the merger of Iksan City and Iksan Country ; the daily quantity of domestic waste for Iksan residents in 1997 was calculated to be $0.66kg/capita{\cdot}day$. 2. Waste generation in nonresidential areas were $8.04kg/capita{\cdot}day$ in average ; the quantity per capita in market places was observed to generate the largest, $36.76kg/capita{\cdot}day$, while that of services was the smallest $0.25kg/capita{\cdot}day$. 3. The average generation per capita of household waste was $0.23kg/capita{\cdot}day$ in the area which has no volume based charge system. This area showed no difference from those of other areas ; the apparent density of the waste recorded the lowest $0.llkg/{\ell}$ for District Offices, while the highest among the classified fields was $0.40kg/{\ell}$ of the Fire Station. 4. Iksan City showed great contribution by decreasing the absolute quantity of waste for landfill by waste classfication, according to the days of the week and reutilizing recyclable waste since August, 1997. 5. Location of a landfill site for disposal of nonrecyclable waste will cause a serious problem to the community and it will be highly recommendable to have governmental support and professtional consultation as well as open discussions, such as hearings, for the settlement of the problem.

• 적정기술학회지
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• 제6권1호
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• pp.37-44
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• 2020

의료폐기물은 감염성물질을 함유하고 있는 모든 종류의 폐기물을 가리키며 전염을 예방하기 위해 운송에 신중을 기해야 한다. 처리 수단으로의 소각은 부피 감소, 악취 제거, 위해성 측면에서 매립이나 투기보다 장점을 갖고 있다. 야외 소각이나 바람직하지 않은 환경에서의 소각은 환경오염 물질의 대기 중 배출을, 생물학적 폐기물의 매립은 토양과 수질오염을 야기시킨다. 피지의 대부분의 2차 병원은 의료 폐기물을 세 군데에 있는 3차 병원으로 차량 또는 배로 이송하여 소각 처리한다. 어떤 의료폐기물은 일반폐기물로 간주되어 현장에서 야외 소각되거나 출산 시 발생한 생물학적 의료폐기물은 매립되기도 하였다. 이런 측면에서 의료폐기물 처리 관련 인력들에 대한 인식 증진을 위한 교육이 시급하다. 피지에서의 의료폐기물 처리는 단일 도로를 따르는 차량운송, 배를 이용한 도서간 운송보다 소형 소각로를 이용한 현장소각이 권장되며, 가이드라인 제정, 관련 인력 훈련, 정부의 법률적 제정 등 의료 폐기물 처리를 위한 기반 조성이 필요하다.

• 에너지공학
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• 제23권3호
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• pp.125-131
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• 2014

본 연구에서는 매립가스 증대를 위한 음폐수의 원활한 주입을 위해 혐기성 산발효 전처리를 수행하였으며 이를 통해 점도 감소와 유기산 생산량을 확인하여 매립지 주입을 위한 최적조건을 확인하고자 하였다. 산발효 후 음폐수 가용화율은 약 15% 증가함을 보였고 체류시간의 변화와 반응기형태를 달리 한 결과 큰 차이를 보이지는 않았다. 반응기형태에 따라 점도변화를 확인한 결과 상향류식 반응기에서 $76.95{\pm}3.27%$로 완전혼합반응기에 비해 약 11.38% 높은 점도 저감효율을 보였으며, VFA생산에서는 체류시간을 3일에서 5일로 증가 시 2.01배(상향류식 반응기), 1.76배(완전혼합반응기) 높은 경향을 보였다. 이는 상향류식 반응기의 경우 고정층담체의 스크린 역할로 분자량이 작은 물질에 비해 큰 물질들이 상대적으로 반응기에 체류하는 시간이 길어져 효율이 높은 것으로 사료된다.

• 환경영향평가
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• 제6권2호
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• pp.137-152
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• 1997

The siting process of municipal solid waste treatment facility consists of a structured set of policies that guide the implementation of waste management goals. The main problems of siting process are the social and political context or the community opposition. During the past, the traditional siting process has been obsolete in most pans of the country, so public officials and researchers have tried to experiment with new policies and procedures. A number of controversial issues offer insight into the factors that are related to the local residents opposition to new waste treatment facilities. The purpose of this case study focused on the establishment of criteria in the site selection of waste treatment facilities which can carry out resources recovery. incineration and landfill simultaneously. That is to say. the main points are to make concrete the quantification standards of assignment and take an objective allotment scale according to the assessment factors. The summarized results are as follows; 1. To promote the site selection based on the guideline such as rational. objective and due process of law, it is desirable to inform the local residents the methods of assessment in advance. 2. Totally 20 factors for the site selection are divided into 3 categories such as living environment characteristics, technological location characteristics and socio-economic factors. And the supposed magnitude of weight in all items are equally applied. 3. In regard to 20 assessment factors, the allotment of point is distributed by the specific location characteristics. Namely to make the assessment easily, each factors are set the scale from 1 to 5 points en masse along the data which are acquired in the region.

• 실내환경 및 냄새 학회지
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• 제16권2호
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• pp.139-149
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• 2017

In order to reduce odor and methane emission from the landfill, open biocovers and a closed biofilter were applied to the landfill site. Three biocovers and the biofilter are suitable for relatively small-sized landfills with facilities that cannot resource methane into recovery due to small volumes of methane emission. Biocover-1 consists only of the soil of the landfill site while biocover-2 is mixed with the earthworm casts and artificial soil (perlite). The biofilter formed a bio-layer by adding mixed food waste compost as packing material of biocover-2. The removal efficiency decreased over time on biocover-1. However, biocover-2 and the biofilter showed stable odor removal efficiency. The rates of methane removal efficiency were in order of biofilter (94.9%)>, biocover-1(42.3%)>, and biocover-2 (37.0%). The methane removal efficiency over time in biocover-1 was gradually decreased. However, drastic efficiency decline was observed in biocover-2 due to the hardening process. As a result of overturning the surface soil where the hardening process was observed, methane removal efficiency increased again. The biofilter showed stable methane removal efficiency without degradation. The estimate methane oxidation rate in biocover-1 was an average of 10.4%. Biocover-2 showed an efficiency of 46.3% after 25 days of forming biocover. However, due to hardening process efficiency dropped to 4.6%. After overturn of the surface soil, the rate subsequently increased to 17.9%, with an evaluated average of 12.5%.

• 한국농촌건축학회논문집
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• 제21권3호
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• pp.17-24
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• 2019

This study aimed to develop a mobile separating and sorting device for discharge sites to separate and sort mixed construction waste generated in small and medium scale in small provincial cities into inorganic materials and combustible materials. The study results can be summarized as follows: 1) As a result of analyzing the existing domestic technology for the separating and sorting mixed construction waste, a device sorting the waste by fusing the vibration screen, disc screen, air blowing methods and the separating and sorting the combustible waste is applied in Korea. 2) In foreign countries, the air blowing, screen, gravity sorters are used for separating and sorting combustible waste in the same way as in Korea. Especially German T Company suggests a construction waste separating and sorting system using an optical sorter. 3) As for the test device for separating and sorting mixed construction waste to be buried in landfill, the processing capacity was set as 16 tons per day. 4) For separating and sorting inorganic materials by granularity, this study set a trommel with two types of diameter as a basic. To operate the mobile all-in-one system, the device is designed to locate a conveyor, a combustible waste conveying device, inside of the trommel. 5) The device is designed in a mobile mode under the concept of primary separating and sorting device, and it can be transported using a 2.5-ton truck minimum. The diameter and length of the trommel are designed to be within 1500mm and 3000mm, respectively. In a further study, an optimized separating and sorting technology is planned to be presented through an experimental study for processing efficiency analysis at the mixed construction waste site by manufacturing the pilot experiment facility reflecting the design elements in the result of this study.

• 한국지반환경공학회 논문집
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• 제9권6호
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• pp.13-19
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• 2008

사용 종료된 매립지의 환경적 영향에 따른 매립 후 변화에 대한 안전성 평가를 위하여 매립 폐기물의 성상 및 가스분석을 통한 연구의 결과는 매립폐기물의 물리적 성상분석의 유기성분이 29.72~63.84%이었고, 비닐 플라스틱류는 평균 32.88%로 가연성 물질의 대부분을 차지하고 있었으며, 침출수의 성분 중 $BOD_5$/CODcr비가 0.18정도로 나타났다. TS의 62.71%중 VS는 30.37%, FS는 32.34%로 FS의 비중이 약간 높게 나타났으며, 매립폐기물의 C/N비는 21.8로 나타났다. 매립지 주변 지표수는 BOD 10.7mg/g, SS의 경우 37.8mg/g, 대장균 31,157(MPN/$100m{\ell}$)로 나타났고, 지하수는 $COD_{Mn}$은 1.13-1.38mg/g, $NO_3-N$은 1.025-4.075mg/g로 나타났다. 침출수는 T-P 0.002-0.028mg/g, $NH_3-N$ 4.0-21.0mg/g로 나타났으며, BOD/CODcr비가 평균 0.18로 나타났다. 토양은 토양오염우려기준에 하회하는 농도분포를 나타내었으며, 매립가스의 $CH_4$와 $CO_2$가스는 각각 13.25%, 6.17%로 나타났고, $H_2S$나 CO가스는 검출되지 않았다. 지표 가스는 $CO_2$, $CH_4$, $H_2S$, CO가스 농도는 검출되지 않았으며, $NH_3$가스 농도는 평균 7.56ppm으로 분석되었다.

• 한국지반공학회지:지반
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• 제13권1호
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• pp.59-74
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• 1997

본 논문에는 사용종료된 쓰레기 매립장의 건설부지로의 개발가능성을 알아 보기 위하여 지반 조사와 침하해석을 수행한 결과를 나타내었다. 쓰레기 폐기물의 침하특성을 저감하고 강도특성을 향상하기 위하여 생석회와 시멘트 계통 그라우트재를 혼합 그 특성변화를 분석하였으며 대상 약액으로는 생석회, 보통시멘트, 슬래그시멘트, Geocrete시멘트의 4종류가 사용되었다. 현장지반조사 결과 쓰레기의 매립기간이 짧아 유기질 함량이 큰 쓰레기가 매립기간이 긴 쓰레기에 비교하여 최적함수비는 크고 최대건조밀도가 작은 것으로 나타났다. 매립쓰레기의 두께가 지점별로 큰 차이를 보였으며 침하량 분석 결과 위치에 따른 침하량의 차이가 크게 나타났다. 고결공법의 적용성을 검토한 결과 쓰레기 강도의 향상정도는 Geocrete시멘트, 슬래그시멘트, 보통 포틀랜드시멘트, 생석회의 순으로 우수한 것으로 나타났다.