• Proceedings of the Korea Air Pollution Research Association Conference
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• 2003.11a
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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)

• Journal of the Korea Concrete Institute
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• v.18 no.5 s.95
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• pp.589-594
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• 2006

The recycling of industrial wastes in the concrete manufacturing is of increasing interest worldwide, due to the high environmental impact of the cement and concrete industries and to the rising demand of infrastructures, both in industrialized and developing countries. The production of municipal wastes in the South Korea is estimated at about 49,902 ton per day and only 14.5% of these are incinerated and principally disposed of in landfill. These quantities will increase considerably with the growth of municipal waste production, the progressive closing of landfill, so the disposal of municipal solid waste incinerator(MSWI) ashes has become a continuous and significant issue facing society, both environmentally and economically. MSWI ash is the residue from waste combustion processes at temperature between $850^{\circ}C\;and\;1,000^{\circ}C$. And the main components of MSWI ash are $SiO_2,\;CaO\;and\;Al_2O_3$. The aim of this study is to find a way to useful application of MSWI ash(after treatment) as a structural material and to investigates the hydraulic activity, compressive strength development composition variation of such alkali-activated MSWI ashes concrete. And it was found that early cement hydration, followed by the breakdown and dissolving of the MSWI-ashes, enhanced the formation of calcium silicate hydrates(C-S-H). The XRD and SEM-EDS results indicate that, both the hydration degree and strength development are closely connected with a curing condition and a alkali-activator. Compressive strengths with values in the 40.5 MPa were obtained after curing the activated MSWI ashes with NaOH+water glass at $90^{\circ}C$.

• Journal of Surface Science and Engineering
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• v.12 no.2
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• pp.115-122
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• 1979

금속이 함유된 폐기물의 처리는 점차 금속표면처리산업(Metal Finishing Industry)에서 큰 관심이 되어가고 있다. 위생침적지(Sanitary Landfills), 혹은 소각로에서 다른 도시 쓰레기들과 같이 처리되는 것은 환경상 불안전하며 이러한 행위는 중단되어야 한다. 다른 방법으로는 특수한 위생침적지의 운영, 안전한 침적지, 금속폐기물의 고정(Fixation), 혹은 포장(Capsule)에 넣어 버리는 방법등이 있으나 이러한 것들은 비실용적이며 예상되는 금속 폐기물의 양에 대하여 비용이 많이 들 것이다. 간단하고 경제적이며 보다 효과적인 분리침적지(Segregated Landfill)가 대신에 제안되고 있다.

• Journal of Korean Society of Environmental Engineers
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• v.27 no.11
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• pp.1205-1214
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• 2005

This study was carried out to investigate the emission characteristics of volatile metals(Hg, As, Se) and semi volatile metals such as Pb from small and medium size municipal solid waste incinerators(MSWIs). The concentrations of Hg, Pb, As and Se in emission gas from small size waste incinerators were higher than those of medium size waste incinerators. This is probably due to less air pollutant control devices and high emission gas temperature of the small size waste incinerators relative to the medium size waste incinerators. Emission gas temperature from small and medium size waste incinerators were divided into 2 groups. The first group was about $100^{\circ}C$ and the second roup in the range of $400{\sim}700^{\circ}C$. The concentrations of emission gas at the second group were Hg $70.43\;{\mu}g/Sm^3$, Pb $0.94\;{\mu}g/Sm^3$, As $9.83\;{\mu}g/Sm^3$ and Se $5.05\;{\mu}g/Sm^3$. The concentrations of Hg, Pb, As and Se at the first group were lower than those found at the second group. Besides, the removal efficiencies of Hg in medium size waste incinerators were $55.2{\sim}95.9%$. Emission gas temperature reduction from waste heat boiler(WHB) contribute to control of Hg. Based on above results, we postulate that the temperature of flue gas should play a very important role in volatile metal control in small and medium size MSWIs. In order to improve the volatile metals removal efficiency, the temperature of cooling system must be controlled and the air pollution control device should be operated properly.

• Journal of Korean Society of Environmental Engineers
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• v.38 no.2
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• pp.96-99
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• 2016

This study characterized fly ash produced from a sewage sludge incineration facility in Korea to determine if the byproducts can be utilized. All the incinerated sewage sludge was from a city in Korea. To characterize fly ash and to determine if it can be utilized, pH, water contents, elemental components, particle size, surface morphology, heavy metal compositions, and others were analyzed. In average, pH was 6.2, and water contents was about 5%. T-N and $T-P_2O_5$ were 3% and 24.5%, respectively. Particle size averaged 836 nm; surface morphology did not exhibit any significant results. X-ray diffraction (XRD) analysis results revealed that major components of the fly ash were $P_2O_5$, CaO, MgO, $K_2O$. Composition of heavy metals by the Korea Standard Methods for Waste Quality did not exceed the criteria for specified wastes in Korea.

• Proceedings of the Korean Institute of Resources Recycling Conference
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• 2001.05a
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• pp.153-156
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• 2001

• Journal of the Korean Recycled Construction Resources Institute
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• v.5 no.1
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• pp.111-116
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• 2010

The treatment of heavy metal, in the waste ash from incinerator and mine solid waste, by using alkali-soluble acrylic copolymer emulsion, that is effective in the absorption of heavy metal has been studied. It seemed that alkali soluble acrylic copolymer emulsion was very effective in the absorption of Hg, Pb, Cd and Cu in this test. Also, eco-friendly thixotropic grout, using alkali soluble acrylic copolymer emulsion, that is effective in the absorption of heavy metal, for the recycling of waste ash from incinerator and mine solid waste has been tested. It was observed that waste ash could be used as a raw material of eco-friendly thixotropic grout mortar due to the effectiveness of alkali soluble acrylic copolymer emulsion in the fixation of heavy metals including $Cr^{6+}$ from waste ash in this test.

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2000.04a
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• pp.282-283
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• 2000

급속한 경제 발전과 인구증가, 일회용품의 증가 둥 사회구조가 대량생산, 대량소비 형태로 변화되면서 폐기물의 처리가 새로운 환경문제로 대두되었다. 도시 생활폐기물의 대부분이 매립 처리되고 있지만, 환경부에서는 매립처리의 비율을 줄이고 2001년까지 소각처리 비율을 25%로 늘릴 계획이다. 1997년에는 도시 생활 폐기물의 63.9%가 매립 처리되고 7.1%는 소각 처리되었으며, 29.0%가 재활용되었다(환경부, 1998). 한편 1995년부터는 쓰레기 종량제의 도입으로 도시쓰레기의 27%가 줄어들었고 재활용되는 쓰레기의 양이 35% 정도 늘어났다. (중략)

• Journal of the Korean Professional Engineers Association
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• v.18 no.4
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• pp.31-35
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• 1985

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2003.11a
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• pp.237-238
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• 2003

대기오염물질 중 수은화합물질은 생태계와 인간에게 치명적인 독성과 생물농축의 특성 때문에 유해한 물질로 관리되어왔으며, 1990년 미국의 Clean Air Act Amendment(CAAA)의 188개의 대기오염물질대기오염물질(HAPs) 중의 하나이고, 국내에서도 25종의 특정대기유해물질 중의 하나로 관리되고 있는 물질이다. 미국 EPA의 보고서에 따르면, 수은화합물의 주요 배출원은 석탄 화력발전소를 비롯한 도시폐기물소각로, 유해폐기물소각로, 병원폐기물소각로 등의 연소설비가 미국 전체 연간 수은배출량의 약 87％를 차지하는 것으로 나타나 주요 배출시설에 대한 관리가 요구되는 것으로 나타났다(US EPA 1997,1998). (중략)