• 한국산학기술학회논문지
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• 제12권7호
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• pp.3327-3333
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• 2011

최근 들어 지속적인 폐기물 발생량의 증가와 화석 연료 고갈 문제를 해결하기 위해 폐기물을 이용한 열에너지 회수에 대한 관심이 증가 하고 있다. 여러 가지 신재생 에너지 중 폐기물을 이용하는 방법이 에너지원의 잠재적 가치를 비교하였을 때 가장 유망한 에너지원으로 인정되고 있으며, 그 중에서도 폐기물을 고체연료로 가공하는 고형연료가 현실적이고 가장 경제적인 방법으로 인정받고 있다. 본 연구에는 세지역의 산업단지에서 발생하는 고형연료의 원료가 되는 산업폐기물에 미량 존재하는 중금속 성분을 분석하였으며, Cl+S 함량은 B산업단지의 농도가 A산업단지의 농도보다 약간 높게 나타났다. A-산업단지의 RDF는 모래성분이 많았으며, B-산업단지 RDF는 염화칼륨과 염화나트륨 및 calcium alumina silicates의 성분이 많이 함유된 폐기물로 나타났다. 또한 C-산업단지 RDF는 lime과 calcium alumina silicate 등이 포함된 폐기물임을 알 수 있었다. 이를 바탕으로 산업폐기물의 발생원과 연료로서의 RDF의 성능을 개선하기 위한 기초자료로 활용될 수 있을 것으로 판단된다.

• International Journal of Concrete Structures and Materials
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• 제18권2E호
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• pp.125-132
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• 2006

Waste glass has been increasingly used in industrial applications. One shortcoming in the utilization of waste glass for concrete production is that it can cause the concrete to be weakened and cracked due to its expansion by alkali-silica reaction(ASR). This study analyzed the ASR expansion and strength properties of concrete in terms of waste glass color(amber and emerald-green), and industrial by-products(ground granulated blast-furnace slag, fly ash). Specifically, the role of industrial by-products content in reducing the ASR expansion caused by waste glass was analyzed in detail. In addition, the feasibility of using ground glass for its pozzolanic property was also analyzed. The research result revealed that the pessimum size for waste glass was $2.5{\sim}1.2mm$ regardless of the color of waste glass. Moreover, it was found that the smaller the waste glass is than the size of $2.5{\sim}1.2mm$, the less expansion of ASR was. Additionally, the use of waste glass in combination with industrial by-products had an effect of reducing the expansion and strength loss caused by ASR between the alkali in the cement paste and the silica in the waste glass. Finally, ground glass less than 0.075 mm was deemed to be applicable as a pozzolanic material.

• Environmental Engineering Research
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• 제12권2호
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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).

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2022년도 봄 학술논문 발표대회
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• pp.107-108
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• 2022

This study aims to solve environmental problems by reducing complex degradation and recycling industrial waste by utilizing waste fibers and blast furnace slags, which are industrial by-products. In addition, it is intended to secure long-term durability to reduce cracks. To this end, the disadvantages of fiber-reinforced concrete are to solve the problem of lowering liquidity and ensuring curing time, and to find the optimal combination when waste fibers and blast furnace slag are used together.

• 한국연소학회지
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• 제7권2호
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• pp.42-48
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• 2002

Experiments on burning process of the industrial wastes were performed on a nozzle-type grate in the industrial waste incinerator with a capacity of 160 kilograms per hour. The temporal variations of temperatures and concentrations of the exhaust gas were measured and analyzed. The synthetic leather waste with the moisture content less than 2% was used. The experimental results show that the CO concentration in the exhaust gas exceeds the limit, 600 ppm, and the gas temperature fluctuates too much when 8 kg of waste was supplied every 3 minutes, equivalent to the capacity of 160kg per hour. That is a typical burning mode of this high-calorific industrial waste. When the smaller unit waste input, 6kg per every 2 min 15 seconds was supplied, we could reduce the fluctuations of the furnace temperature and improve the exhaust emissions, especially the CO concentration.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2006년도 춘계학술논문 발표대회 제6권1호
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• pp.71-75
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• 2006

Problem of the environmental pollution and pollution by vast quantity occurrence of industrial waste by progress of industry is risen recently. Is real condition that waste foundry sand to be industrial waste that happen in casting industry of them has much the occurrence amount and the processing method is depending on most simplicity reclamation and so on. Therefore, by using waste foundry sand in the world by fine aggregate for mortar in recycling side of industrial waste necessity of development for new principal parts aggregate is risen along with rise of aggregate price by exhaustion phenomenon of natrual resources, wish to analyze physical and mechanical properties special quality and foretell practical use possibility availability.

• 한국주거학회:학술대회논문집
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• 한국주거학회 2002년도 추계학술발표대회
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• pp.179-182
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• 2002

Today, augmentation of industrial wastes with industrial development demands diminution and recycling technical development for industrial wastes reduction. A statistical research of industry and constructional wastes as a request of the times can achieve the conservation of resource and the protection of environment. The ultimate object of the study is not only diminution and recycling of industrial wastes but also the degree of self-sufficiency in resource and the attainment of comfortable life environment, which can the accomplish the resource circulation system and make progress into the environmentally advanced country. The object of this investigation is industrial classification, a waste discharge quantity, a waste sort, waste disposal of industrial wastes in Yeung-nam area. The investigation of special quality in industrial wastes can be used to establish a wastes management policy and a disposition method .

• 산업기술연구
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• 제38권1호
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• pp.9-13
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• 2018

FRP(Fiber Reinforced Plastic) ships are easy to manufacture and repair. Also they are more durable and cheaper than steel wires and neck lines. Therefore FRP ships are widely used in small ships. In Korea, the amount of waste FRP ships is increasing. It is expected that a large amount of waste FRP ships will be generated. Waste FRP ships are emerging as a social problem, such as the difficulty in preserving the marine environment. To improve this, a waste FRP ship melting process system has been developed. In order to construct an effective waste FRP ship processing system, it is necessary to study the treatment facilities location problem. In this paper, we suggest mathematical model to solve optimal location problem of waste FRP Ships and discuss on results by applying it to nine regions selected as candidates for treatment facilities.

• 에너지공학
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• 제8권2호
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• pp.242-247
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• 1999

각종 산업단지 및 발전소에서 배출되는 막대한 양의 폐열을 회수하여 재활용하기 위하여 전국 7개 지역 11개 공단에 대한 폐열 특성분석을 실시하였다. 본 연구는 도시종합에너지시스템 연구의 일환으로 산업체 폐열을 배후도시의 주거 및 상업지역에 공급.이용 가능성을 검토하였다. 검토대상 공업단지의 조사된 폐열량은 148,913 TOE/년으로 나타났으며, 온도범위는 $0^{\circ}C$~20$0^{\circ}C$가 83%, 그리고 배가스 형태로 배출되는 폐열이 전체의 82%를 차지하는 것으로 나타났다. 이들 조사대상 공업단지 중 폐열량이 집중된 4개 지역 (대구공단, 울산 석유화학단지, 여천 석유화학단지 및 전주공단)에 대한 폐열특성도 상세하게 조사되었으며, 이들 공단의 조사된 폐열량은 114,402 TOE/년으로 조사된 총폐열량의 77%에 해당하며. 이중 배가스는 87%, 온도범위는 $0^{\circ}C$~20$0^{\circ}C$의 폐열이 대부분인 것으로 나타났다. 또한, 18.1 million TOE/년의 폐열이 화석연료를 사용하는 발전소로부터 발생되며, 이중 95%가 복수냉각기에서 배출되는 27$^{\circ}C$~34$^{\circ}C$ 범위의 저온폐열이며, 나머지 5%(894,800 TOE/년)가 연도 배가스 형태로 배출되고 있는 것으로 조사되었다.

• Environmental Engineering Research
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• 제22권3호
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• pp.266-276
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• 2017

A life cycle impact assessment was applied in an industrial waste incineration plant to evaluate the direct and indirect environmental impacts based on toxicity and non-toxicity categories. The detailed life cycle inventory of material and energy inputs and emission outputs was compiled based on the realistic data collected from a local industrial waste incineration plant, and the Korean life cycle inventory and ecoinvent database. The functional unit was the treatment of 1 tonne of industrial waste by incineration and the system boundary included the incineration plant and landfilling of ash. The result on the variation of the impact by the unit processes showed that the direct impact was decreased by 79.3, 71.6, and 90.1% for the processes in a semi dry reactor, bag filter, and wet scrubber, respectively. Considering the final impact produced from stack, the toxicity categories comprised 91.7% of the total impact. Among the toxicity impact categories, the impact in the eco-toxicity category was most significant. A separate estimation of the impact due to direct and indirect emissions showed that the direct impact was 97.7% of the total impact. The steam recovered from the waste heat of the incineration plant resulted in a negative environmental burden.