• Title, Summary, Keyword: municipal solid waste

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Study for Reducing of Hazardous metals in Bottom Ash from Municipal Solid Waste Combustors(MSWC) of Korea (도시생활폐기물 소각로에서 발생되는 바닥재중의 유해 금속류 저감방안에 관한 연구)

  • Chung, David;Yun, Youog-Ja
    • Analytical Science and Technology
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    • v.14 no.6
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    • pp.516-521
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    • 2001
  • This research was for reducing leachated concentration of hazardous pollutants in bottom ash from municipal solid waste combustors(200 tons/day) of Korea. Lead and copper compounds were selected as main pollutants. For reducing of leachated level, optimal conditions were observed using air oxidation for lead compounds and water washing method for copper compounds. and it was observed stable pH range of bottom ash from analyzing lechated level by pH variation.

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Characterization of Municipal Solid Waste (MSW) Ash Particles Using Low - Z Electron Probe X-ray Microanalysis (EPMA) (Low - Z EPMA 단일 입자 분석법을 이용한 도시 소각재 입자의 특성 분석)

  • 황희진;김혜경;노철언;이우근;박용광
    • Proceedings of the Korea Air Pollution Research Association Conference
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    • pp.392-393
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    • 2003
  • 우리나라의 폐기물 발생총량은 꾸준히 증가추세를 보이는 가운데, 최근 생활폐기물의 처리현황을 보면 재활용이나 소각이 매년 증가하고 있다. 쓰레기 소각율이 높아지고 대형 소각시설이 증가하면서부터 소각 후에 발생하는 도시 소각재의 처리 및 재활용의 문제가 중요한 관심사가 되고 있다. 소각재의 효과적이고 안전한 취급을 위해서는 그것의 화학적 성질에 관한 지식이 중요하다. Kirby and Rimstldt$^{[1]}$ 는 Charlotte (USA)에 소재하는 두 곳의 소각로에서 나온 Municipal Solid Waste (MSW) ash를_체계적으로 분석하여 화학적 조성에 대한 연구를 행한 바 있다. (중략)

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The Effect of the MSW-RDF Power Generation and Tipping Fee Sharing in RDF Project (RDF발전효과와 사업비 분담방안)

  • Choe, Gap-Seok;Choe, Yeon-Seok;Kim, Seok-Jun;Gwon, Yeong-Bae
    • 연구논문집
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    • pp.5-13
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    • 2002
  • This paper deals with the result of an analysis on the effect of the power generation by municipal solid waste(MSW)-refuse derived fuel(RDF) and the introduction of tipping fee sharing between RDF manufacturing and power generation project. As a model case for the MSW generated at small and medium cities in our country, an analysis of the RDF power generation and Tipping fee sharing shows that 1) MSW amount of 7,800* $10^3 $t/y could produce 1,950*$10^3$t/y of RDF 2) Electric power generated by MSW-RDF could supply 290,000 households/year and 98,548 C-t/y of $CO_2$ could be reduced. 3) Tipping Fee should be shared by the considering of the contents of project of both side between RDF Production and power generation.

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CHARACTERISTICS AND STRENGTH EVALUATION OF THE MIXED MATERIAL OF FLY ASH FROM MUNICIPAL SOLID WASTE INCINERATOR AND THE RECYCLED POLYPROPYLENE

  • Park, Sang-Min;Kim, Hwan-Gi
    • Environmental Engineering Research
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    • v.11 no.5
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    • pp.257-265
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    • 2006
  • The purpose of research is to mix the fly ash from municipal solid waste incinerator in the recycled Polypropylene and to recycle. The specimen was produced by mixing 20 wt.% of MSWI fly ash at maximum in the recycled Polypropylene and the particle size analyzer, DSC, TGA, SEM and UTM instruments were used to analyze the physical chemical properties of the specimen. As a result of measurement, the average particle size of MSWI fly ash was $18.08\;{\mu}m$. In TGA analysis, the temperature of specimen S-5 at 50% of weight decrease was risen by $7^{\circ}C$ higher than specimen S-1. In UTM measurement, specimen S-2 showed the maximum strength for tensile strength and specimen S-3 showed the maximum strength for flexural strength. But, impact strength was decreased according to the increasing proportion of MSWI fly ash. In conclusion, when the proper amount of MSWI fly ash was added to the recycled Polypropylene, thermal endurance, tensile strength and flexural strength could be increased, but impact strength was decreased.

Citizen's Attitude to the Food Waste Composting (음식물 퇴비화에 대한 주민의식조사)

  • 이무춘;정재춘
    • Hwankyungkyoyuk
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    • v.6 no.1
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    • pp.174-184
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    • 1994
  • The purpose of this was to investigate the citizen‘s attitude to the food waste composting as a mean of municipal solid waste recycling. Approximately 900 questionaires were distributed to Seoul, Kangwon province and some other provinces. Most of people recognized that the composting of food waste is necessary for organic waste recycling minimization. Also, they think that a systematic education for domestic waste composting is required. They are willing to participate in the community basis small scale facility composting.

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Assessment on Stabilization of Open-dumping Landfill Based on Leachate - A Case Study of Salmi Landfill - (침출수 특성 분석을 통한 사용종료 비위생매립지 안정화 평가 - 살미매립지 사례연구 -)

  • Hong, Sang-Pyo;Kim, Kwang-Yul
    • Journal of Environmental Impact Assessment
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    • v.15 no.5
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    • pp.299-308
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    • 2006
  • To utilize a closed municipal solid waste landfill site in environmentally secure conditions, it is necessary to verify the stabilization level of landfill leachate. To assess leachate stabilization of an open-dumping municipal solid waste landfill site (Salmi Landfill) which is located at the vicinity of Chungju Reservoir which flows into Paldang Reservoir utilized as Seoul Metropolitan water supplies, the landfill history and surrounding characteristics of the landfill site were surveyed. In this investigation, waste, leachate, groundwater and surfacewater samples from this landfill were physically and chemically analyzed, and the analysis results were evaluated by 'The Criteria of Landfill Waste Stabilization (CLWS)', 'Discharge Criteria of Landfill Leachate', 'The Criteria of Domestic Use in Groundwater Quality', and 'The Criteria of Domestic Use in Surfacewater Quality' that promulgated by Korean Ministry of Environment. From the analysis results on the Salmi open-dumping landfill, C/N ratio was 18.9 and $BOD/COD_{Cr}$ ratios in leachate were higher than 1/10. Based on the CLWS, this results seemed to imply that the process of leachate stabilization at this landfill was still proceeding.

Modeling of coupled THMC processes in porous media

  • Kowalsky, Ursula;Bente, Sonja;Dinkler, Dieter
    • Coupled systems mechanics
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    • v.3 no.1
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    • pp.27-52
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    • 2014
  • For landfill monitoring and aftercare, long-term prognoses of emission and deformation behaviour are required. Landfills may be considered as heterogeneous porous soil-like structures, in which flow and transport processes of gases and liquids interact with local material degradation and mechanical deformation of the solid skeleton. Therefore, in the framework of continuous porous media mechanics a model is developed that permits the investigation of coupled mechanical, hydraulical and biochemical processes in municipal solid waste landfills.

Single-Particle Characterization of Municipal Solid Waste (MSW) Ash Particles Using Low- Z Particle Electron Probe X-ray Microanalysis (단일입자분석(Low-Z Particle Electron Probe X-ray Microanalysis)을 이용한 도시 소각재 입자의 특성분석)

  • Hwang Hee Jin;Kim Hye Kyeong;Ro Chul-Un
    • Journal of Korean Society for Atmospheric Environment
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    • v.21 no.3
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    • pp.367-375
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    • 2005
  • Low-Z particle Electron Probe X-ray Microanalysis was applied to characterize MSW fly- and bottom -ash particle samples originated from two municipal incinerators (denoted as A and B) in Korea. According to their chemical composition, many distinctive particle types were identified. In A fly ash, the major chemical species are carbon-rich, aluminosilicates and many particles are composed of as a mixture of $ CaCO_3$ and other chemical species such as $CaSO_4$ or $CaCl_2$. For B fly ash, Fe, iron oxide, NaCl and NaCl-containing particles are the most abundant. In bottom ash, A and B were composed of similar chemical species such as carbon-rich, Fe, iron oxide, $CaCO_3$, and aluminosilicates. It was demonstrated that the single-particle characterization using this low-Z particle EPMA technique provided detailed information on various types of chemical species in the MSW ash samples. In addition, the technique has advantage over conventional analytical techniques in the point that both crystalline and glass-like ash particles can be analyzed at the same time.