• Title, Summary, Keyword: municipal solid waste

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Consciousness of Citizens for the Issue of the MSW(Municipal Solid Waste) (생활쓰레기 문제에 대한 소도시 시민의 의식조사)

  • 장성호
    • Journal of environmental and Sanitary engineering
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    • v.13 no.3
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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.

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The Effect of Organic Loading and Seeding Rate to Biodegradibility of Food Waste (음식물쓰레기의 유기물 부하 및 식종율 변화가 생분해도에 미치는 영향)

  • 박남배;정용현;양병수
    • Journal of environmental and Sanitary engineering
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    • v.14 no.2
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    • pp.25-31
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    • 1999
  • Energy recovery technology from municipal solid waste has been increasingly established in many countries. Anaerobic treatment of municipal sewage sludge has low digestion efficiency because of low organic loading rate of sewage sludge. The purpose of this study was to evaluate anaerobic biodegradability of food waste which was based on organic loading rate and seeding rate. From the results of anaerbic biodegration, the optimum condition for seeding rate was turn out over 40%, which did not inhibition of methane production.

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A Study on Using Incineration Heat of Municipal Solid Wastes - Case Study of Taegu metropolitan city - (생활(生活)쓰레기 소각열(燒却熱) 이용실태(利用實態)에 관(關)한 연구(硏究) - 대구광역시(大邱廣域市)를 중심(中心)으로 -)

  • Hong, Won-Hwa;Yi, Gang-Kook;Lee, Ji-Hee
    • KIEAE Journal
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    • v.1 no.1
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    • pp.45-52
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    • 2001
  • This study aims to make a fundamental data for a policy-making decision in treatment and disposal of municipal solid wastes and presents a research data on the discharge properties of municipal solid wastes and making a unit of them in the Taegu metropolitan city. The results can be summarized as follows; survey the discharge properties of municipal solid wastes, calorific values and to present a research-data in supplying incineration-heat of wastes with the area of Sung-seo in Taegu. So, using fundamental data for planning and running wastes-incineration plants as well as trying to make better Urban Environmental Infra-structure. The results are obtained from the study. 1) The proportion of combustible wastes in Taegu increased from 89.6% to 94.47% during 1993~2000. However, the proportion of incombustibles decreased from 10.4% to 5.53% during 1993~2000. 2) The value of representative properties is about 1500~2000kcal/kg. So we can expect that it should be made use of energy-resources positively. 3) The heat from Sung-seo wastes-incineration plants is used to produce electronic-energy for wastes-incineration plants in summer season. The heat from Sung-sea wastes-incineration plants is in charge of 27% which of supplying the area of Sung-seo with district heating energy in winter season.

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A study on the physico-chemical characteristics of municipal solid wastes generated in the sunchon city (순천시의 생활폐기물 발생량 예측 및 재활용시설의 용량산정에 관한 연구)

  • Hu, Kwan;Moon, Ok-Ran;Wang, Seung-Ho
    • Journal of the Korea Organic Resources Recycling Association
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    • v.9 no.4
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    • pp.125-134
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    • 2001
  • The purpose of this study is to provide basic information for a future countermeasure municipal and to establish several wastes policy after investigating solid wastes from Sunchon City. In addition, this research can be supported to manage of recycling plant and to reuse plant of each wastes. Results are as bellows after checking up and analysis type of waste in Sunchon city Unit solid waste generation rate from single family is $0.50kg/person{\cdot}day$, and total solid wastes are 41.9ton/day. Unit solid waste generation rate from apartments is $0.45kg/person{\cdot}day$, and solid wastes generation is 55.5ton/day. Unit solid waste generation rate from agricultural is $0.22kg/person{\cdot}day$ and total solid wastes are 13.5ton/day. That show total amount of municipal solid wastes from residential are 110.9ton/day. Unit solid waste generation rate from traditional markets is $1.85kg/person{\cdot}day$, and solid waste total volume is 5,400kg/day. Unit solid waste generation rate from small store is $2.03kg/person{\cdot}day$, and solid waste total are 25,101kg/day. Therefore, this show that total wastes are 30.50kg from downtown and commercial area. Solid waste quantity from Industrial area (Factory region) is 8.5ton and in case of school and hospitals are 7.2kg/day and 3.0kg/day. Solid waste amount from Institutional is 6.6kg/day. Food wastes were eliminated from municipal solid wastes as standard 63.4ton/day, and combustible wastes were 126.9ton/day. If it schedule about 5 years (by 2006) as durable year for food wastes treatment plant, it is expected 42.5ton/day for treatment capacity. We can judge that it is effective to be set 2 lines equipment ${\times}25ton/day$ as treatment ability under considering unexpected working condition such as any repair, trouble and an electrical load. If it schedule about 10 years (by 2011) as durable year for food wastes treatment plant, it is expected 150 ton/day for treatment capacity. We can conclude that it is effective to be set 2 lines equipment ${\times}80ton/day$ as treatment ability under considering working condition such as low loaded operating and the repair for incineration.

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폐기물 연소 보일러의 튜브 손상 메카니즘

  • Baek, Se-Hyeon
    • 열병합발전
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    • pp.9-13
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    • 2009
  • 최근 국내에 MSW(Municipal Solid Waste), RDF(Refuse-Derived Fuel) 또는 석탄과 폐기물을 혼합 연소하는 Waste-To-Energy 보일러 대한 관심이 증대되고 있는바, EPRI(Electric Power Research Institute)의 연구자료를 인용하여 상기 보일러에 대한 튜브 손상 메카니즘에 대하여 설명하고자 한다.

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VOLATILE ORGANIC COMPOUNDS MEASUREMENT IN THE BOUNDARY OF WASTE TREATMENT FACILITIES

  • Yim, Bong-Been;Kim, Sun-Tae
    • Environmental Engineering Research
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    • v.12 no.2
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    • pp.46-54
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    • 2007
  • Concentrations of the principal volatile organic compounds, such as benzene, toluene, ethylbenzene, m,p,o-xylene, styrene, and chlorobenzene were measured at the solid waste treatment plants classified into four categories; municipal waste incinerator, municipal waste landfill site, industrial waste incinerator and industrial waste landfill site. The average concentration of VOCs in industrial waste treatment facilities was 33.43 ppb and was significantly higher than that measured at municipal waste treatment facilities (4.71 ppb). The average toluene concentrations measured at incinerators (13.05 ppb) were a little higher than those measured at landfill sites (11.54 ppb). The contribution of the waste treatment facilities to the concentration of benzene (0.35 ppb) and o-xylene (0.15 ppb) in the industrial area was relatively small. However, toluene measured in the industrial waste treatment facilities was the most abundant VOCs with the average concentration of 21.37 ppb. As a result of analyses of fingerprint, in cases of IISH and ILUS, a variety of compounds other than major VOCs were detected in high level. On the Pearson correlation analysis, the correlation was generally positive and some pairs of these VOCs were very strongly correlated (correlation coefficient > 0.75).

Korea Recycling Situation and Policy for Municipal Solid Waste Ash

  • Kim, Hyung-Seok;Ahn, Ji-Whan;Kim, Hwan
    • Proceedings of the IEEK Conference
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    • pp.650-654
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    • 2001
  • To utilize municipal solid waste incineration ash as useful resources in Korea, studies on the present state of production and management of incineration ash and its effects on environment were made. And, it was intended to analyze the management conditions of incineration ash in many foreign countries and reflect them in domestic incineration ash policy. Korean incineration ash policy is based on the control of waste production, considering the difficulties in securing landfills and the small size of national land, and will be changed into recycling- and incineration-centered one. Furthermore, studies on the stabilization and recycling of incineration ash should be continuously conducted to overcome the concerns about environmental pollution.

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The Settlement Characteristics of Unsanitary Solid Waste Landfilles (비위생 매립지반의 침하특성 연구)

  • Lim, Ju-Hyun;Jo, Suk-Ho;Kim, Hak-Moon;Jang, Kyung-Jun;Kim, Chan-Kuk
    • Proceedings of the Korean Geotechical Society Conference
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    • pp.1012-1023
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    • 2008
  • This paper estimates the long-term settlement of In-cheon unsanitary solid waste landfills. which is 20 years old. The unsanitary solid waste landfills was subjected to pre-loading system over a period of 1 year, and the settlement for 300 landfill monitors provided measured data. This landfill contain relatively small amount of organic component, therefore the initial stage of settlement was very small. The existing settlement models are examineed to compare with the observed behavior of this site and, also to estimate long-term settlement. The Hyperbolic, Bjarngard & Edgers, and Power Creep Law models showed good agreement well with the measured settlement of the In-cheon unsanitary solid waste landfills.

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Study on Co-incineration of Municipal Solid Waste and Organic Sludges (도시쓰레기와 유기성 하수 슬러지 혼합소각에 관한 연구)

  • Jurng, Jong-Soo;Chin, Sung-Min
    • 한국연소학회:학술대회논문집
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    • pp.238-244
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    • 2005
  • This study performs the pilot-plant experiments to evaluate the effect of the oxygen enrichment on the co-incineration of municipal solid waste and organic sludge from a wastewater treatment facility. The design capacity of the stoker-type incinerator pilot-plant is 150 kg/h. Combustion chamber temperatures were measured as well as the stack gas concentrations, i.e., NOx, CO, and the residual oxygen. The maximum ratio of organic sludge waste to the total waste input is 30%. Also the oxygen-enriched air with 23% of oxygen in supplied air is used for stable combustion. As the co-incineration ratio of the sludge increased up to 30% of the total waste input, the primary and the secondary combustion chamber temperature was decreased $to900^{\circ}C$ (primary combustion chamber), $750^{\circ}C$(secondary combustion chamber), respectively, approximately $200^{\circ}C$ below the incineration temperature of the domestic waste only (primary: $1,100^{\circ}C$, secondary: $950^{\circ}C$). However, if the supplied air was enriched to 22% oxygen content in air, the incinerator temperature was high enough to burn the waste mixture with 30% sludge, which has the heating value of 1,600 kcal/kg.

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Assessment on Stabilization of Open-dumping Landfill Gas - A Case Study of Salmi Landfill - (사용종료된 비위생매립지의 매립가스 안정화 평가 - 살미매립지 사례연구 -)

  • Hong, Sang-Pyo;Kim, Kwang-Yul
    • Journal of Environmental Impact Assessment
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    • v.14 no.6
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    • pp.365-375
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    • 2005
  • For managing and utilizing a closed municipal solid waste landfill site in environmentally secure conditions, it is necessary to verify the stabilization level of landfill gas(LFG) and waste. For assessing LFG and waste stabilization of an open-dumping municipal solid waste landfill (Salmi Landfill) which is located at the vicinity of Chungju Reservoir which flows into Paldang Reservoir that has been used for Seoul Metropolitan water supplies, the history and the surrounding characteristics of the landfill site were surveyed. In this study, waste and LFG samples obtained from landfill site were physically and chemically analyzed, and then the analysis results were evaluated on the basis of 'The Criteria of Landfill Waste Stabilization(CLWS)' that were promulgated by Korean Ministry of Environment. Based on LFG composition of Salmi landfill, $CH_4$ was as high as 68%. In CLWS regulation, the stabilization criteria of $CH_4$ should be lower than 5%, and the criteria of C/N ratio should also be lower than 1/10. The result showed that C/N ratio of landfilled waste ranged 17.4~24.7. From this results, it was concluded that the LFG and C/N ratio stabilization level of this landfill based on the CLWS were still actively proceeding.