• Title/Summary/Keyword: Incineration

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Problem and Optimum Operational Strategy of Multipurpose Reservoir in Korea (우리나라 다목적 Dam 운영의 문제점과 개선방안)

  • 심순보
    • Journal of the Korean Professional Engineers Association
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    • v.19 no.1
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    • pp.25-32
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    • 1986
  • The number of visiters to Bukhan Mt. national park, generation quantity of solid waste and collection system were researched to consider a counterplan for the pollution control of the national park and study for developing the effective treatment of solid waste was tried through the proximate analysis of each component containing. Results obtained in this study were summerized as follows; The great part of visitors go on an excursion to the Bukhan Mt. national park during July and August and also, the solid waste was generated nearly a half of the total amount at the same period. The major collection facilities in the national park were waste basket and incineration box. But the incineration box was too large in volume and very far in distance, and its collection period was irregular, so it was cause to the congestion of solid waste and bad smell and dirty. Therefore, to complete collection of solid waste, we must set up the waste basket which able to find within 40~50m from the origination place of solid waste and induce the visitors to throw the solid waste. It was obtained as moisture content: 48.5 wt%, volatile solid: 28.4wt%, fixed solid: 23.1 wt%, lower heating value: 1,320kca1/kg from experimental analysis of solid waste. According to this analysis, the incineration operation is possible, but the generation quantity of solid waste was too small to construct incineration plant for heat recovery. It was found that it is suitable for the aerobic composting by mixing with the night soil which generate in the national park after the recovery of resources such as metals, glasses and plastics.

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Design of a fuzzy model predictive controller for combustion control of refuse incineration plant (쓰러기 소각로의 연소제어를 위한 퍼지모델 예측제어기 설계)

  • 박종진;강신준;남의석;김여일;우광방
    • Journal of the Korean Institute of Intelligent Systems
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    • v.7 no.2
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    • pp.43-50
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    • 1997
  • Refuse incineration plant operations involve many kinds of uncertain factors, such as the variable physical properties of refuse as fuel and the complexity of the burning phenomenon. This makes it very dificult to apply conventional control methods to the combustion control of the refuse. So most of the refuse incineration plant are operated by operators. In this paper, an multi-variable fuzzy model predictive controller is proposed for the combustion control of the re:fuse. Adaptive network based fuzzy inference system is used for modeling of the refuse incineration plant and multi-variable fuzzy model predictive controller is designed based on the identified fuzzy model. And computer simulation was carried out to evaluate performance of the proposed controller.

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Properties of High Volume Blast Furnace Slag Concrete using Recycled Aggregate with Incineration Waste Ash (소각장애시의 치환에 따른 고로슬래그 미분말 다량치환 순환골재 콘크리트의 특성)

  • Han, Cheon-Goo;Lee, Hyang-Jae;Kim, Jun-Ho
    • Journal of the Korean Recycled Construction Resources Institute
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    • v.1 no.2
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    • pp.107-113
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    • 2013
  • This study is the study desiring to solve the problem by utilizing the kinds of recycled resources considered to be troubled complementarily. Namely the reaction of potential hydraulicity of Blast Furnace Slag Powder (BS) shall be reacted with the alkali of Recycled Fine Aggregates Coarse Aggregate, it has been experimented to obtain the optimum value with the replacement ratio of incineration plant ash (WA) treated with the slaked lime as the experiment variable by solving the alkali of shortage with the Ordinary Portland Cement (OPC). As a result, the liquidity and the air volume are declined slightly as the replacement ratio of incineration plant ash WA increases, the mixture of incineration plant ash WA 1% has been analyzed to be the most suitable considering the viewpoint of effective handling of waste as the compression and the tensile strength showed the maximum value before and after 1% even though it was disadvantageous with the increase of chloride content.

Forecast of Greenhouse Gas Emission by Policy of Waste Management in Korea (폐기물관리 정책변화에 따른 온실가스 배출량 예측)

  • Kim, Hyun-Sun;Kim, Dong-Sik;Yi, Seung-Muk
    • Journal of Environmental Health Sciences
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    • v.34 no.5
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    • pp.343-350
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    • 2008
  • Quantifying greenhouse gas (GHG) emissions in the waste sector is important to evaluating measures for reduction of GHG emissions. To forecast GHG emissions and identify potential emission reduction for GHG emissions, scenarios applied with environmental policy such as waste reduction and structural change of waste treatment were developed. Scenario I estimated GHG emissions under the business as usual (BAU) baseline. Scenario II estimated GHG emissions with the application of the waste reduction policy while scenario III was based on the policy of structural change of waste treatment. Scenario IV was based on both the policies of waste reduction and structural change of waste treatment. As for the different scenarios, GHG emissions were highest under scenarios III, followed by scenarios IV, I, and II. In particular, GHG emissions increased under scenario III due to the increased GHG emissions from the enhanced waste incineration due to the structural change of waste treatment. This result indicated that the waste reduction is the primary policy for GHG reduction from waste. GHG emission from landfill was higher compared to those from incineration. However, the contribution of GHG emission from incineration increased under scenario III and IV. This indicated that more attention should be paid to the waste treatment for incineration to reduce GHG emissions.

Effects of Barley Straw Application on Growth and Yield in Soybean (보릿짚 시용이 콩의 생육 및 수량에 미치는 영향)

  • 김수경;손범영;김대호;김은석;강동주
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.45 no.6
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    • pp.387-391
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    • 2000
  • Barley straw is a good source of organic matter for next crop growth following barley. This study was conducted to investigate effects of barley straw application methods (application, removal, or incineration) on growth and yield in soybean cultivation following barley. A soybean variety, Eunhakong, was sown on 12 June with drill-seeder attached to tractor after tillage. Barley straw application resulted in increase in organic matter content compared to removal and incineration of barley straw, and soil physical properties such as water content and porosity, were improved by application and incineration of barley straw. Weed occurrence was deterred by 44% in barley straw application and by 31% in barley straw incineration compared with removal of barley straw. Number and dry weight of soybean nodules were move abundant in barley straw application than the other treatments at 4 and R2 stages. Barley straw application had less for dry weight than barley straw removal but greater than incineration of barley straw about 30 days after seeding. However barley straw application caused greater top dry weight 90 days after seeding. Root dry weight was not affected by barley straw application method at all growth stage. There're no significant differences in soybean yield among barley straw application methods.

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The pilot study on reclamation of incineration ashes of municipal waste in the demonstrative factory

  • Chang Hui-Lan;Liaw Chin-Tson;Leu Ching-Huoh
    • 한국지구물리탐사학회:학술대회논문집
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    • 2003.11a
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    • pp.573-580
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    • 2003
  • In Taiwan there are 21 Municipal Solid Waste Incinerators (MSWI) built to treat 80% of the MSW nationwide. Approximately 2,000 tons of incineration ashes of municipal waste contain reaction ash and fly ash (3:1 by weight)will be produced daily, and this may cause a serious waste problem. According to EPA regulations, reaction ash and fly ash produced after incineration should be properly treated. Landfill capacity barely meets the general demands. More efficient actions should be planned and taken. The study found 'reclamation' should be the optimal solution to this problem. Only limited research and previous successful experiences are available among other countries. An incinerator in Northern Taiwan is chosen for this study to make environmental bricks from the reaction ash and fly ash. From the previous tests, the results of strength test were measured. From the previous test results, the fly ash products have not reached the desired strength; hence, reaction ash is chosen for further pilot study. In the experiment, incineration ashes, cement and gravel are mixed in the ratio of 1:1:1(by weight), to ground concretization aggregate and pelletization aggregate, the concrete products made from the aggregates were of the strength of 108 $kgf/cm^2$ and 142 $kgf/cm^2$ individually. For the purpose of making nonstructural walls which met the State Building Standards. In the study, 50 tons of concrete products was yielded from aggregate and environmental bricks. Further observation and supervision are recommended to ascertain the resource recycling and reclamation. EPA has planned to build three 'Recycling Plants' in northern, middle and southern Taiwan to develop efficient techniques to produce concrete products, sub-base course, soundproofing wall, gravel, artificial fishing reefs, tiles, drainage, bricks and etc. This experiment of the demonstrative plant solves the problem of the incineration ashes and opens another opportunity to reclaim them.

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Investigation of N2O Emission and Reduction Effect from MSW Incineration Plant (도시고형폐기물 소각시설에서 발생하는 N2O 발생량 조사 및 저감효과에 관한 연구)

  • Song, Hyun-Ok;Ko, Jae-Churl;Choi, Sang-Hyun;Kim, Duk-Hyun
    • Journal of Korean Society of Environmental Engineers
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    • v.39 no.12
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    • pp.672-678
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    • 2017
  • In this study, municipal solid waste (MSW) has collected 3 times and physico-chemical analysis has done. Nitrous oxide emissions from MSW incineration plant were measured continuously by EPA Method 18 and it was compared with the emission by calculation using the emission factor. The $N_2O$ emission of MSW incineration plant was more than twice as large as the emission by calculation. It was found that the installation of abatement facilities in MSW incineration plant is effective in achieving the greenhouse reduction targets and it can be ensure economical efficiency through emission trading system.

Effects of Incineration Waste Ash and Gypsum Substitution on the Properties of Blast Furnace Slag Mortar using Recycled Aggregate (소각장 애쉬 및 석고치환이 고로슬래그 미분말 기반 순환골재 모르타르의 물성에 미치는 영향)

  • Han, Min Cheol;Han, Dong Yeop;Lu, Liang Liang
    • Journal of the Korea Institute of Building Construction
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    • v.15 no.2
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    • pp.161-167
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    • 2015
  • Nowadays, all the world face to the global warming problems due to the emission of $CO_2$. From the previous studies, recycled aggregates were used as an alkali activator in blast furnace slag to achieve zero-cement concrete, and favorable results of obtaining strength were achieved. In this study, gypsum and incineration waste ash were used as the additional alkali activation and effects of the gypsum and incineration waste ash to enhance the performance of the mortar were tested. Results showed that although the replacement ratio of 0.5% of incineration waste ash and 20% of anhydrous gypsum resulted in the low of mortar at the early age, while it improved the later strength and achieved the similar strength to that of conventional mortar (at 91 days).

An Study on Compressive Strength Properties of Mortar with Municipal Solid Waste Incineration Ash Melted Slag Powder (쓰레기 소각재 용융슬래그 미분말을 혼입한 모르타르의 압축강도 특성에 대한 연구)

  • Lee, Yong-Moo;Kim, Young-Su
    • Journal of the Korea Institute of Building Construction
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    • v.16 no.1
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    • pp.53-58
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    • 2016
  • In order to investigate the feasibility of municipal solid waste incineration ash melted slag powder as admixture, an experimental study was performed on cement mortar with municipal solid waste incineration ash melted slag powder. Fresh mortar properties and strength properties with various municipal solid waste incineration ash melted slag powder replacement ratios were estimated. There replacement ratio adopted in this study was 0, 10, 20, 30, 40, 50%. After then flow properties was considered as properties of fresh mortar. And compressive strength was determined 3, 7, 14, 28, 56 days for the hardened mortar specimens. According to the test results, the flow of mortar was increased with in replacement amount of municipal solid waste incineration ash melted slag powder. Furthermore, compressive strength at early age was decreased, whereas the compressive strength at the age of 28, 56day was increased.

A Study about Recycling from Municipal Solid Waste Incineration Bottom Ash (생활폐기물(生活廢棄物) 소각(燒却)바닥재의 재활용(再活用)을 위한 연구(硏究))

  • Ahn, Ji-Whan;Oh, Myung-Hwan;Han, Choon
    • Resources Recycling
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    • v.17 no.1
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    • pp.3-11
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    • 2008
  • The treatment of domestic municipal solid waste has inclined to incineration process instead of disposal in landfills. So, the amount of ash generated by incineration of municipal solid waste is gradually increased. The incineration ash divides into bottom ash and fly ash. The bottom ash which accounts for about 90% of the incineration ash consists of ceramics, glasses and metals. And it can be used as the recycling product by the stabilization process. For example, the bottom ash is used as secondary building material or for other similar purposes such as road sub-bases and noise barrier in USA, Europe and Japan. But, the stabilization-treatment technique of bottom ash sti11leaves much to be desired in Korea. Thus, the domestic study of recycling about bottom ash must be improved through investigation about the chemical property and technique of stabilization.