• Ecology and Resilient Infrastructure
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• 제7권4호
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• pp.256-261
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• 2020

국내의 도로비점오염저감시설은 오염원을 저감시키는 성능에 근거해서 침투형, 식생형, 저류형, 인공습지 등과 같이 분류된다. 이 분류기법은 기법을 이해하기는 용이하나 도로교통과 관련된 요소가 고려되지 않아 실제 도로기술자가 계획이나 설계에 적용할 때 애로가 많았다. 본 연구에서는 도로비점오염저감시설을 설계에 적용할 때 시설의 종류를 결정할 수 있는 분류방법론을 개발하였다. 도로의 특성 (위치, 차선, 교통량), 시설여유, 도로의 구조물 등을 주요 결정인자로 도로비점저감 대책의 의사결정과정을 만들어 유형별로 시설을 선정할 수 있는 기법을 개발하였다. 각 유형별로 사이트의 조건과 적용이 가능한 시설 및 대책을 정리하여 현장에 적용할 수 있도록 하였다. 개발한 기법은 경기도 도로구역에 적용하여 보완하였고, 비점저감 계획에 사용할 수 있도록 하였다.

• Ecology and Resilient Infrastructure
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• 제7권4호
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• pp.294-299
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• 2020

본 연구에서는 팔당 상수원 보호구역내 적정 도로비점오염 저감시설의 계획을 위해 대상 도로구간의 현장조사를 통해서 보호구역내 도로의 특성을 파악하고 이에 적용가능한 도로를 선정하고 시설을 시범적용하여 그 유효성을 검증하였다. 팔당 상수원 보호구역은 도로주변 토양의 배수등급이 높아 침투시설을 지양하고 도로사면을 통한 자연적인 오염원 저감방법을 적용하는 것이 적정하다. 앞으로 도로비점저감시설의 계획 및 설계에서 대상도로의 특성에 대한 분석 후 저감계획을 세우는 것이 적정하며 이는 관련 규정 및 설계 기준에도 반영되어야 할 것이다.

• 한국물환경학회지
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• 제31권6호
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• pp.715-722
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• 2015

Four major river basin in Korea has been managed with Total Maximum Daily Load(TMDL) System. Water quality indicators as targeted pollutants for TMDL were BOD and TP. In order to satisfy water quality criteria, government allocation using public treatment facilities and its action plan has been used. However, the role to improve water quality were recently faced to its limitation. It is time to require the role of non-government allocation in private discharge facilities to control good water quality. This study investigated three different scenarios in reduction demands of non-government allocations about industry and private sewages. The three different scenarios were discharge under 1) legal water quality standard, 2) water quality level in 2011 and 3) current water quality level with maximum value in group. The results showed that reduction potential in water discharge for TP indicator was 1,118kg/day, under second scenario with 20% of deduction. This results arrived at 42% of whole reduction potential costs and 0.012mg/L improvement in water quality. In conclusion, to intrigue voluntary participation in non-government allocation, various benefits such as tax reduction, tax exemption, and water quality trading should be provided.

• 한국환경복원기술학회지
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• 제3권1호
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• pp.20-26
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• 2000

In order to propose the design and installation information of vegetation belt, field investigation were carried out in the noise pollution control facilities of highway and the streets of a city for two years(1998~1999), and field tests were performed to analyze the noise attenuation effect of them. The noise pollution control facilities were generally classified into three types (noise barrier and vegetation belt type, mounding and vegetation belt type, vegetation belt type only). Most soundproof facilities were proved the noise reduction effects. But according to width, height, structure, auditory distance and planting forms of them, difference of noise reduction effects were investigated. The soundproof facility was suitable the mounding and vegetation belt type in the consideration of road environment, and the installation standard of vegetation was estimated that the width of vegetation was at least 20m and the length of that was 2 times in the distance from noise source.

• 한국산학기술학회논문지
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• 제16권4호
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• pp.2876-2882
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• 2015

본 연구의 목적은 대표적 점오염원인 석탄화력발전소의 대기오염방지시설을 개선했을 때 최대 착지 농도 및 주변지역의 대기오염도 변화를 파악하는데 있다. 대기오염방지시설 개선 전 후의 대기질을 예측 비교하여 시설의 개선 효과가 어느 정도인지를 분석하였다. 대기질 예측에는 바람장의 변화를 Puff의 이동으로 나타낼 수 있고, 비정상 상태를 구현 할 수 있는 대기오염확산모델인 CALPUFF 모델을 이용하였다. 화력발전소의 주요 대기오염배출 물질인 아황산가스($SO_2$), 이산화질소($NO_2$), 먼지($PM_{10}$) 항목을 예측 항목으로 선정하였다. 연구결과 $SO_2$, $NO_2$ 항목은 대기오염방지시설 개선으로 인하여 최대 착지지점 및 주변지역의 대기질 오염도 감소에 상당히 효과가 있는 것으로 분석되었다. $PM_{10}$ 항목의 경우에는 최대 착지지점에서는 오염도 감소 효과가 높으나, 석탄 화력발전소 주변지역의 대기오염도 감소 효과는 다소 낮게 분석되었다.

• Asian Journal of Atmospheric Environment
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• 제7권1호
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• pp.48-55
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• 2013

The purpose of this study was to develop a $CO_2$ emission factor for refuse plastic fuel (RPF) combustion facilities, and calculate the $CO_2$ emissions from these facilities. The $CO_2$ reduction from using these facilities was analyzed by comparing $CO_2$ emission to facilities using fossil fuels. The average $CO_2$ emission factor from RPF combustion facilities was 59.7 Mg $CO_2$/TJ. In addition, fossil fuel and RPF use were compared using net calorific value (NCV). Domestic RPF consumption in 2011 was 240,000 Mg/yr, which was compared to fossil fuels using NCV. B-C oil use, which has the same NCV, was equal to RPF use. In contrast, bituminous and anthracite were estimated at 369,231 Mg/yr and 355,556 Mg/yr, respectively. In addition, the reduction in $CO_2$ emissions due to the alternative fuel was analyzed. $CO_2$ emissions were reduced by more than 350 Mg $CO_2$/yr compared to bituminous and anthracite. We confirmed that using RPF, an alternative fuel, can reduce $CO_2$ emissions.

• 한국물환경학회지
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• 제20권5호
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• pp.525-533
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• 2004

The object ofthis study was to test for STORMSYS process that composed Catch Basin and Stormsys(three units: vortex solids separator, filter media bed and vegetated filter strips). It could be applied to treat the first-flush non-point pollution materials on the road(especially, motorway). This study investigated that the runoff characteristics of non-point pollutions containing the heavy metal(Fe, Zn and Cu) by rainfall showed relatively high pollution concentration in the early-stage storm runoff on the road, which seems to be caused by the vehicular traffic, and showed the rapid reduction of pollution concentration on the basis of about 5mm rainfall volume. As the number of the non-rainy days were increased, the pollution concentration by storm runoff was increased, also. As a test result of this process, the average removal efficiency of BOD, $COD_{mn}$, SS, T-N and T-P over the testing period were 92.7%,88.6%,97.4%,93.0% and 93.3%, respectively. Also, the average removal efficiency of n-Hexane, Fe, Zn and Cu were 86.7%, 96.1%, 84.4% and 78.4%, respectively. As shown in the characteristics of storm runoff, the non-point pollution materials have high pollution concentration in the early-stage storm runoff on the road, the installation of STORMSYS process is expected to reduce considerable amount of non-point pollutions.

• 한국물환경학회지
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• 제29권5호
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• pp.591-597
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• 2013

The input emergy of an advanced treatment plant for reducing the 1 kg of TN and TP was estimated 4.14E+14 sej/kg, 5.02E+15 sej/kg, respectively. In addition, the input emergy of constructed wetland for reduction of the 1 kg of TN and TP reduction was estimated to be 2.48E+14 sej/kg, 3.38E+15 sej/kg, respectively. The cost reducing 1 kg of TN and TP for an advanced treatment plant was estimated 197,466 won and 2,388,739 won respectively and constructed wetland was estimated 117,976 won and 1,609,213 won respectively. As a result, All of the emergy source of constructed wetland for reducing non-point source is renewable resource. If we use the constructed wetland, it results in enhancing economic value by reducing of non-point pollution, controlling a flood and providing the habitat of animals or plants. Improving water quality program in the Nakdong River Basin should be changed into an ecological treatment facilities from expansion of the sewage treatment facilities and advanced treatment plant using high cost and non-renewable energies.

• 한국농공학회논문집
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• 제64권1호
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• pp.65-77
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• 2022

Due to muddy water from the highland fields upstream of Soyangho Lake, the Mandae, Gaa, and Jawoon have been redesignated as NPS management areas. This study aims to evaluate the adequacy and supplementation points of the implementation plan by analyzing the operation status of muddy water generation and reduction facilities through on-site investigations by NPS management area to achieve the effective nonpoint pollution reduction goal in the implementation of the implementation plan established in 2020. The SS load calculated based on the survey results from July to October 2019 from 2017 showed a decreasen in 2019 compared to 2017. Both and the Jawoon were analyzed to have decreased. However, the amount of precipitation also decreased by about 27%, so it was judged that the effect of the reduction project was not significant. As a result of the detailed investigation of abatement facilities, about 86% of the 793 facilities installed in the management area were evaluated as 'good'. As a result of a detailed investigation by subwatersheds, subwatersheds 105 and 106 in the Mandae were analyzed as apprehensive subwatersheds. appeared to fall. In addition, it was analyzed that the effect of reducing muddy water in the Mandae district was insufficient due to the high ratio of leased farmers, lack of efforts to reduce turbid water in leased farmland, conversion to annual crops, and neglect of bare land. In the case of Gaa district, although the abatement facilities are concentrated in the upstream, muddy water was also found to be severe.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2008년도 추계학술대회 논문집
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• pp.750-761
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• 2008

The social and economical value assessment of railway facilities implies unaccountable values such as: reduction of travel time, reduction of car accident, reduction of air pollution. However, the value of railway facilities has been evaluated as the transportation and management results. The investment and management results of railway need to be considered objectively. Therefore, this study established the economical value assessment method of railway facilities composed of 10 items of economical value through the existing a preliminary assessment investigation, a manual of railway investment assessment, paper study. In addition, this study proposed the strategy for the value assessment of railway facilities before and after.