• Tunnel and Underground Space
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• v.8 no.3
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• pp.194-199
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• 1998

This research was aimed to figure out the trend of dust diffusion at open pit limestone mine for assessing the environmental impacts on the high voltage power transmission line. It is rather easy to assess the dust generation and size distribution of limestone dust at the blasting site, but it is very hard to assess the expected area of dust diffusion and amount of dust fall by the distances from the dust source. In this research, a 3-dimensional fluid dynamic simulation software (3D-Flow) was used for analysing the above mentioned matters to assess the impacts to the insulators on the transmission tower by the blasting dust. It was verfied that the 3D-Flow is reliable tool for simulating dust movement, and the limestone dust is not much hazardous to the power transmission line.

• 레미콘
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• no.3 s.3
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• pp.85-89
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• 1985

다음 자료는 환경청이 85년 2월에 마련한 레미콘, 시멘트제조시설, 토석광물 저장시설 및 연탄공장 등의 비산분진배출원을 효율적으로 관리하여 쾌적한 생활환경을 조성하기 위한 관리지침이다. 이 가운데 레미콘생산업체와 관련된 부문만 요약한다.

• Journal of the Korean Professional Engineers Association
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• v.21 no.1
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• pp.30-34
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• 1988

• Journal of the Korean Professional Engineers Association
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• v.20 no.4
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• pp.27-37
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• 1987

• 레미콘
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• no.6 s.8
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• pp.52-63
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• 1986

• 레미콘
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• no.3 s.11
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• pp.57-68
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• 1987

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2000.11a
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• pp.425-426
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• 2000

우리나라의 주항의 하나인 인천항을 통하여 수입되는 사료, 곡물, 고철등에 의하여 다량의 비산먼지가 발생하고 있으며, 인근지역에 심각한 피해를 입히고 있는 실정이다. 이러한 비산먼지로 인한 오염을 방지하기 위하여 현재 Dome이 설치되어 시범운영되고 있고, Dome 내부에서의 하역작업을 통하여 외부로의 비산먼지의 유출을 억제할 수 있다. 그러나 Dome 내부에서 사료등의 상ㆍ하차에 의하여 고농도의 분진이 발생되고 있는 실정이다. (중략)

• Explosives and Blasting
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• v.17 no.2
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• pp.45-51
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• 1999

To find out the characteristics and trend of dust fall in open cut limestone mine in-situ measurement and wind tunnel tests were carried out. In-siti measurement was done by two dust fall samplers at the Halls mine for 60 days. The laboratory test was done in the 100m long temporary wind tunnel installed at the yard of the institute. The most of dust falled within 25m form the dust source and only less than 0.5% defused up to over 100 meters. It was known that the dust fall at 100m away from souces were negligible.

• Journal of Korean Society of Environmental Engineers
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• v.27 no.4
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• pp.445-449
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• 2005

Present study was designed to evaluate the practical application of triethyl amine(TEA) injection for improving the collection efficiency of electrostatic precipitator(ESP) connected to a real operating plant. The major fuels used at the domestic power stations were bituminous coals imported from Australia, China, South Africa, and USA. Although the values of the electric resistance would be more or less different according to the type of the coals used, the unique electric resistance values of fly ash from the coals were mostly higher than $1{\times}10^{12}\;{\Omega}-cm$ and therefore, back corona problems were always expected to occur in the electrostatic precipitator. The particulates concentrations, smoke concentrations and their electric resistivity measured at the outlet of ESP, and the inspection of collection indicated that the injection of TEA improved the collection efficiency of particulate at collection plates of ESP. The electric resistance for, fly ash with the injection concentration of TEA 15 ppm(Purity 99.7%) was lowered to $2.1{\times}10^{11}\;{\Omega}-cm$ after injection from $1.9{\times}10^{12}\;{\Omega}-cm$ before injection. Under this condition, the dust emission content at the stack was reduced to approximately 80%, lowering the average outlet concentrations of particulates from $70\;mg/Sm^3$ to $14\;mg/Sm^3$.

• Journal of the Korean Applied Science and Technology
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• v.35 no.1
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• pp.284-291
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• 2018

In this study, a dust inhibitor for road dust was prepared by using molecular structure, molecular weight, viscosity, hydrophilicity, swelling, wetting and moisturizing properties of natural polysaccharide which is widely used as food and cosmetic materials. Various dust control effects were confirmed and superior results were obtained than simple water spraying and synthetic for control(PVA). In addition, the comparison of water evaporation, scattering inhibition rate, Field test, and determining acute lethality of effluents to Daphnia magna were studied and the safety of soil and water quality was studied. The availability of the dust inhibitor was confirmed.