• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2000년도 가을 학술발표회 논문집
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• pp.415-418
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• 2000

There has been a steady increase in geoenvironmental engineering projects where geotechnical engineering has been combined with environmental concerns. Many of these projects involve some investigation on contaminant around unplaned waste landfill. In this study, investigation and test on contamination characteristics of wastes dumped at municipal site were carried out. Testing wastes were sampled at this site. Sampled wastes were divided into waste itself and soil to analysis the characteristics of waste and soil. As a result of this study, the concentration of soil and waste were investigated. And measured concentration were compared with related concentration criteria.

• 한국환경보건학회지
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• 제27권1호
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• pp.56-62
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• 2001

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 undecomposed waste characteristics by open-cut test at S. waste landfill site in Pusan city. Pilot test was conducted for stabilization. The experimental results from this study were summerized as follows. ; Since COD matter was easuer decomposed than COD matter for continuously biological stabilization in underground, it seemed that BOD and CO $D_{Mn}$ were in the range of 854~4,813mg/$\ell$ and 1,156~6,977mg/$\ell$ and their ratio were generally as high as 0.55~0.74. As C $H_4$ compositions of generated gas were measured in the range of 37.36~60.1%, we could know that C $H_4$ gas was actively 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 actively decomposed. The measured and theoretical values of generated gas in waste landfill site were almost similar to C $H_4$ 50.0% and 53.4%, $CO_2$ 39.63% and 45.24%, and after 0.5$^{\circ}C$ 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 lystimeter(B) to exsiting anaerobic lysimeter(A). Therefore, it seemed that landfill site was of benefical to the conversion of facultative aerobic for stabilization.

• 환경위생공학
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• 제13권3호
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• pp.93-101
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• 1998

This study was carried out to investigate and analyze the citizen's attitude for the issue of the municipal solid wastes in Miryang city. The waste generation rate was decreased by 56% compared with 1991, and 71.8% of generated wastes were treated by landfill method. 61.6% among respondents were contacted waste problem by TV and the majority of respondents felt seriousness of food-waste problem. The majority of people felt that waste discharge decreased after "volume-base charge system" and 71% of total respondents were burdened down with use of volume-base charge envelope. The greater part of citizens answered that they experienced damage due to wastes and satisfied with the collection system but they recognized the necessity of the establishment of collection system and increase of cleaners must be nessary.

• 환경위생공학
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• 제15권2호
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• pp.49-57
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• 2000

The objective of this study is to find solid waste decomposition in landfill without leachate discharge. This study was observed variation of landfill gas production rate and leachate for stabilization assessment, and using four sets of lysimeter as experimental apparatus. Soild waste decomposition was accelerated in without leachate discharge system by sufficient moisture for methane bacteria. And gas production rate was between 54.2ℓ/kg VS∼335.9ℓ/kg VS in each lysimeter. Generation time of methane gas was showed different in each lysimeter, but it was much faster than literature research. The time of stabilization phase were began as follows : L-1 400 day, L-2 350 day, L-3 170 day and L-4 70 day respectively. Decreasing times of BOD/COD ratio and C/N ratio were necessary more than literature research because organic matter was not discharge such as wash out.

• 대한안전경영과학회지
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• 제3권3호
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• pp.201-211
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• 2001

The most general treatment method of municipal solid waste is a landfill. The LFG (landfill gas) migration is a serious problem in environmental aspect. The object of this study is to present the possibility of LFG utilization as a replacement or supplementary fuel for local energy -demand. We have developed the EXCEL program for the economic analysis.

• 유기물자원화
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• 제13권1호
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• pp.124-130
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• 2005

매립은 폐기물의 최종처분방법으로 광범위하게 이용되며, 매립된 폐기물은 미생물의 활동에 의해 분해된다. 미생물에 의한 생분해는 수분함량, 산화환원전위, pH, Alkalinity, 황산염, 영양물질과 미량원소, 방해인자, 미량이온, 온도와 같은 여러 인자에 의해 영향을 받는다. 특히, 수분은 미생물의 활성에 주요한 인자이다. 본 연구에서는 수분이 고형폐기물(MSW)의 분해에 미치는 영향을 조사하여 분석하였다. 이를 위해 총 8기의 모의매립조에 고형폐기물을 충전하였고, 수분함량을 20, 30, 40, 50% 4개로 하여 운전하였다. 그 결과 수분함량이 높을수록 $CO_2$의 농도가 높았고, 매립가스 또한 많이 발생 하였다. 이는 수분함량이 높을수록 미생물 분해가 효과적임을 의미한다.

• Journal of Ecology and Environment
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• 제42권4호
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• pp.191-198
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• 2018

Improper management and unsanitary approaches are implemented in disposal of leachate, which has resulted in groundwater pollution at village Uruli Devachi, Pune, India. Various physico-chemical treatment methods are commercially available for leachate treatment. However, the application of biological methods viz. phytoremediation to the municipal solid waste landfill leachate has been limited. We report the remediation ability of Typha aungstifolia and Acrorus calamus that is capable of reducing hazardous constituents from the landfill leachate. After 96 h of hydraulic retention time (HRT), it was observed that T. aungstifolia-treated sample showed high reduction potential in reducing biochemical oxygen demand, chemical oxygen demand, hardness, total dissolved solids, Na, Mg, Ca and Ni whereas A. calamus showed greater reduction capacity for alkalinity, Cl, Cu, Zn and Cr. Furthermore, it was also observed that T. aungstifolia withstood longer HRT than A. calamus. In situ application of T. aungstifolia and A. calamus for remediation of landfill leachate carries a tremendous potential that needs to be further explored.

• 한국산학기술학회논문지
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• 제13권6호
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• pp.2833-2845
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• 2012

본 연구에서는 자원화 가능한 폐기물의 양이 분석되었으며, 폐기물 자원화시설을 단독 또는 광역시설로 추진할 경우의 설치비 및 운영비를 산정하고, 매립비용과 비교, 분석함으로서 자원화시설의 타당성을 검토하고자 하였다. 자원화시설로는 고형연료화(RDF) 시설과 자원회수시설(소각)에 대한 검토를 수행하였다. 그리고, 강원도 각 시 군별 생활폐기물의 발생량과 가연성 폐기물의 비율을 고려하여 비용분석을 위한 광역권역을 설정하였다. 분석 결과, 단독시설의 경우에는 RDF 및 자원회수시설(소각) 모두 매립방식에 비교하여 경제적 편익이 없는 것으로 나타났다. 광역 시설의 경우, RDF 방식은 매립방식에 비해 많은 비용을 절감하는 것으로 나타났지만, 자소각 방식은 그렇지 않은 것으로 나타났다. 경제적 편익과는 별개로 화석 연료의 고갈, 지구온난화, 환경적 위해성, 그리고 사회적 갈등 등을 고려할 때 폐기물의 자원화는 중요하게 고려되어야 한다. 특히, 향후 CDM 사업이 활성화될 경우 CERs(온실가스 저감인증)에 의한 추가적인 경제적 부가가치도 기대할 수 있을 것으로 나타났다. RDF 시설에 의한 CERs는 약 2,565억원, 자원회수시설에 의한 CERs는 약 540억원(단독시설) 및 774억원(광역시설)으로 분석되었다.

• 산업경영시스템학회지
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• 제23권59호
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• pp.105-118
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• 2000

The rise in population and the increase of urbanization and industrial growth has resulted in an ever-increasing volume of municipal solid waste that must be regularly collected, transported, and ultimately disposed of. Therefore, over the last decade the public, commercial and legislative awareness of environmental issues has been increased dramatically on earth particularly some industrial countries which has a shortage of landfill capacity. A quality, cost and delivery lead-time are usually considered as the competitive factors for each industry. However, the concepts of environmental issue are emerging common terms and concerns more seriously. More attention than ever is being focused on the recycling and source reduction techniques to reduce the total volume of waste. Unfortunately, however, a shortage of landfill capacity and increasing disposal cost requests a fundamental solution about the environmental issue. That is the remanufacturing which allow manufacturers to minimize waste, production cost and to turn end-of-life product into a profitable product. The objectives of this research were to growth the remanufacturing system by suggesting issues and implementation methods for the remanufacturing. In order to accomplish these objectives, we introduced backgrounds of appearance and benefits of the remanufacturing.

• 한국환경보건학회지
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• 제19권4호
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• pp.51-58
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• 1993

The integrated solid waste management for Seoul Metropolitan city can be established on the basis of the following hierarchy of priorities: 1. Efforts for source reduction should be propelled by both government and citizens to achieve the effects of resource conservation. The adequate production and consumption which are environmentally amenable and sustainable can be induced by the reasonable imposition of deposit money for waste treatment to one-time use products. To accomplish source reduction effectively, the induction of legal and institutional regulation of producer and consumer participation is requisite. 2. For resource recovery, wastes generated should be recycled as far as practicable. Community residents are responsible to separate discharge, the authorities concerned have responsibility of separate collection, and recycling industry should be assissted through tax reduction and financing. Resource separation facilities can be constructed at Kimpo Metropolitan landfill site for wastes not separately collected due to some unavoidable circumstances. 3. Garbage should be composted. Garbage is uneconomical for incineration, because it has high moisture content and low calorie, thus there is no reason for the incineration of garbage even though garbage is classified into combustibles. Composting facilities can be located at sites which are not densely populated and easily accessible to transportation, for example, Kimpo Metropolitan landfill site. Compost produced can be managed by the authorities for the use of fertilizer to a green tract of suburban land and farms. 4. Nonhazardous combustible wastes not recyclable can be utilized for thermal recovery at the incinerators which are completely equipped with pollution control devices. According to the trend of local autonomy and the equity principle of local autonomous entities, incineration facilities of minimal capacity required can be constructed at each districts of Seoul Metropolitan city which have organized local assembly. In case of Yangcheon district, the economically combustible waste quantity is about 260 tons/day which exceeds 150 tons/day, the incineration capacity of existing facility. But, from now on, waste quantity can be reduced substantially by the intensive efforts of citizens for source reduction and recycling and the institutional support of administrative organizations. Especially, it is indispensable for the government to constitute institutional and technological bases that can recycle paper and plastics form 43% of waste generated. A good time for constructing of incineration facilities for municipal solid waste can be postponed to the time that pollution control technologies of domestic enterprises are fully developed to satisfy the standards of air pollution prevention, because the life expectancy of Kimpo Metropolitan landfill site is about 25 years. Within this period, institutional improvements and technological advancements can be attained, while the air qual. ity of Seoul Metropolitan city can be ameliorated to the level to afford incineration facilities. 5. For final disposal, incombustibles and ash are landfilled sanitarily at Kimpo Metropolitan landfill site.