• Proceedings of the Korea Water Resources Association Conference
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• 2009.05a
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• pp.2088-2092
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• 2009

비점오염원은 면으로 분포하는 오염원으로 강우시 지표유출에 의해 유출되기 때문에 발생지점 및 발생량 추정이 어려우며, 이에 대한 처리가 어려운 실정이다. 현재 점오염원의 처리는 어는 정도 도달한 선진국에서는 비점오염원이 가장 중요한 오염원으로 대두되고 있는 실정이다. 따라서, 본 연구에서는 소양호 상류유역의 지류하천인 내린천, 인북천, 북천을 대상으로 부영영화를 일으키는 수질인자 BOD, COD, SS, T-N, T-P를 대상으로 강우량에 따른 수질농도가 변화하는 양상을 고찰하였다. 연구결과, 강우시 기간이 6월 ${\sim}$ 8월에 오염물질의 유출이 크게 발생하는 것을 알 수 있었으며, 연구지점 모두 비강우시에는 1급수의 수질상태를 보였으나, 강우시에는 3급수 이하의 수질로 악화되는 것을 알 수 있었다. 또한, 각 지류하천으로부터 유입되는 부하량을 추정하여 유역면적대비 유출량 - 오염부하량의 회귀식을 작성하였다. 끝으로, 유출량비를 이용하여 각 지류 하천의 유역면적대비 연간 총 오염유출량을 산정하였다.

• Journal of Korean Society of Environmental Engineers
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• v.31 no.9
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• pp.765-774
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• 2009

Fiber Dyeing and Finishing facility has been recognized as an important pollution source due to its consumption of large volumes of water and chemicals. Unit mass discharge for the conventional water quality parameters such as flowrate, SS, $BOD_5,\;COD_{Mn},\;COD_{Cr}$, TN, TP were estimated. To represent the respective industries, three companies were carefully selected based on its manufacturing goods, flowrate and location at various unit operations and processes. More than 90% of decrease in unit mass estimation between influent and effluent of BOD was observed. But the values themselves were similar to those of Fiber Manufacturing facility due to the high loadings of organic matter. Biodegradability of influent was almost three times higher than that of effluent. Unit mass discharge estimations of unit process (estimated in this study) based on space, products and raw material were similar to those of composite process (estimated by National Institute of Environmental Research), while big difference was observed in the other factors. Unit mass discharge factors calculated in this study can be used as the reference for the estimation of water pollution loading costs in Nakdong river basin. For the effective water pollution control and management, it is essential to characterize the various types of water quality parameters from the effluents of individual industrial wastewater treatment plants.

• Proceedings of the Korea Water Resources Association Conference
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• 2008.05a
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• pp.465-469
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• 2008

수도권의 중요한 상수원인 팔당호 수질에 큰 영향을 주고 있는 경안천 유역의 오염배출량을 저감하기 위하여 많은 인공습지조성이 계획되었으나 이들의 위치선정의 적합성에 대한 분석이 부족한 실정이다. 또한 경안천은 상류에서 중류까지는 주변 농경지의 용수공급을 위해 많은 수중보가 설치되어 물의 흐름이 단절되어있어 수리적 요소에 인공요인으로 작용하고 있으며, 하류로 갈수록 하천이 곡선형태로 흐르고 하폭 또한 넓어져 자체적으로 유기물이 증가하기 좋은 환경을 가지고 있다. 본 연구에서는 유역의 자연적, 인공적 요소를 고려한 물리적 모델을 구축하고 각 오염원특성별 부하량 분석을 통한 속성정보를 반영하였으며 오염저감시설설치 시나리오의 타당성분석을 분석을 수행하였다. 연구과정을 좀더 상세히 살펴보면 첫째, 비점오염원의 주된 경로중 하나인 축산계부하량 저감을 위하여 지형적 인자를 고려한 인공습지조성 적지분석 결과를 HSPF모델에 반영하였다. 둘째, 기존 오염 총량제에서 수행해오던 오염부하량 산정방식을 통해 산정된 양을 유역단위로 재분배 하여 오염원 분포를 반영하였다. 주요 오염부하량인 축산계와 토지계의 오염부하량만을 적용하였으며 일부 오염원 항목들은 생략하거나 하수처리시설을 통해 처리되고 있는 것으로 모의하였다. 셋째, 각 시나리오별 시뮬레이션을 수행하여 경안천 인공습지조성가능성 및 수질개선 효과를 예측하였다. 기존의 점오염원 처리시설만으로는 하천에서의 목표수질을 만족시키는데 한계가 있기 때문에 점오염원 저감시설뿐 아니라 비점오염원 저감시설인 인공습지를 기존의 처리시설에 연계하여 시나리오를 구성하였다. 기존습지시설의 오염저감율은 각 시설들의 평균값을 적용하였으며 처리효율은 BOD, TN, TP 각각 40%, 25%, 12%로 적용하였다. 오염원분포를 고려한 모의결과 현재 인공습지 입지대상지역들 중 좀 더 효율적인 오염저감 효과를 보이는 지역이 분석되었다.

• Journal of the Korean Association of Geographic Information Studies
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• v.2 no.3
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• pp.60-70
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• 1999

The purpose of this study is to analyze the spatial change of water quality pollutant in the upper-stream of Kumho River basin. For this purpose, it compared with ground survey data of water quality measurement, using GIS and Landsat TM image, and then constructed a database of water quality pollutants in the watershed by Arc/Info. Also the land cover classification maps of 1985 and 1997 were prepared using maximum likelihood classification. This study detected and analysed the classified images to produce the area of land cover change per sub-basin. In addition, choropleth maps were prepared with spatial change value of water quality pollutants, and overlay analysis was carried out with weight score for each layer. The results of this study revealed that population, animals and fruit orchards were main factors in the spatial change of water pollution of Kumho River basin. The Comparision of pollutions by sub-basins showed a high pollution value in Daechang-chun and Omok -chun stream which follows through the urban area.

• Journal of the Korean Association of Geographic Information Studies
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• v.24 no.1
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• pp.26-39
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• 2021

This study investigated the characteristics of the watershed and pollutants in the Seonakdong River basin in the lower stream of the Nakdong River Water System, and evaluated the areas vulnerable to nonpoint pollution by subwatershed according to the TOPSIS(Technique for Order of Preference by Similarity to Ideal Solution) method. The selection method consists of selection of evaluation factors, calculation of weights and selection of areas vulnerable to non-point pollution through evaluation factors and weights. The entropy method was used as the weight calculation method and TOPSIS, a multi-criteria decision making(MCDM) method was used as the evaluation method. Indicator data were collected as of 2018, and national pollution source survey data and national statistics were used. Most of the vulnerable watersheds were highly urbanized had a large number of residents and were evaluated as having a large land area among industrial facilities and site area rate. Through this study, it is necessary to approach a variety of weighting methodologies to assess the vulnerability of non-point pollution with high reliability, and scientific analysis of the factors that affect non-point pollution sources and consideration of the effects are necessary.

• Journal of Korea Soil Environment Society
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• v.2 no.2
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• pp.3-8
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• 1997

The basic aim of the current policy is to achieve and preserve a sustainable soil quality. This means that soil must retain all its functions for years to come. The Soil Protection Act lays down a statutory "duty of care", which means that soil contamination occurring during certain activities must be cleaned up by the person who cause it. The Soil Cleanup (Interim Measures) Act(1983) was repeated on 15 May 1994, and its provisions, together with some ammendments and additions, were assimilated into the Soil Protection Act. These cleanup regulations are intended to deal with "old cases" of soil contamination, i.e. cases that came to light before 1 January 1987, when the Soil Protection Act entered into force. The urgency for cleanups is dependent upon the actual exposure. In most cases actual exposure win be less than potential exposure (underlying C-values) because only a few exposure routes are present. Cleanup of sites where exposure exceeds maximum tolerable risk levels are considered urgent, and the actual risk level is used to prioritize the cleanup.oritize the cleanup.

• Journal of Wetlands Research
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• v.19 no.3
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• pp.287-295
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• 2017

In this study, rainfall runoff characteristics according to peak concentration were analyzed using the water quality and flow data in the Geumho river, and the direction of nonpoint source management such as monitoring and management period by pollution source was derived. Peak Water Quality Concentration is the concept that utilizes the extreme value as the concentration of non-point pollution control standard with the highest water quality in the rainwater runoff. Using this method, the evaluation factors such as cumulative precipitation(total precipitation), peak water quality concentration, cumulative precipitation up to peak water quality concentration, time to peak water quality concentration, and EMC to peak water quality concentration were examined and long- Rainfall runoff characteristics of nonpoint sources were analyzed. The results of the analysis suggested proper monitoring and management method to manage nonpoint source.

• The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
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• v.12 no.1
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• pp.1-8
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• 2007

Environment factors related to the distribution of organic matter in surface seawater and sediments were investigated to estimate main pollution sources and range of their influence in Gwangyang Bay. The main pollution sources for the factors that affect organic matter distribution could be divided into three main sources: fresh water runoffs from Seomjin and Dong River, Gwangyang-si domestic sewage, and Yosu Industrial Complex. Considering the characteristics in horizontal distributions of the environmental factors in water column, sediment, and water current regime, the influencing range of these main sources was likely to be divided into three areas within the bay as follows: Area I receiving lots of fresh water from Seomjin River, Area II receiving lots of domestic sewage from Gwangyang-si and fresh water of Dong River, Area III receiving lots of materials from Yosu Industrial Complex. Area I seems to be characterized as low salinity, high concentration of $NO_3-N,\;and\;SiO_2-Si$, Area II as low salinity, high concentration of $NO_3-N,\;NH_4-N,\;and\;SiO_2-Si$, and Area III as high water temperature, high concentration of $NH_4-N,\;and\;PO_4-P$ in water column, high concentration of $NH_4-N,\;PO_4-P,\;and\;SiO_2-Si$ in surface sediments.

• Spatial Information Research
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• v.23 no.1
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• pp.33-40
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• 2015

Recently, land pollution makes various environment problems according to existing land use. So, there is an urgent need for management about these problems. This study categorize land pollution area using the land category information according to main land usage for reasonable analysis of land pollution area by point and non-point pollution sources. And also there was able to collect land pollution sources information efficiently by analysing the land category information. The land use information that categorized important factor for management and land pollution survey will be utilized Soil environment management and preservation. And land use information will be used land use regulation, resonable preservation and management.

• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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• 1997.05a
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• pp.101-104
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• 1997

본 연구에서는 네덜란드에서 시행하고 있는 토양환경정책을 정리하고, 국내의 적용성에 대해서 검토해 보았다. 네덜란드의 토양환경관리의 목표점은 토양의 다기능성을 유지시키고자 한 것으로서 다기능성의 회복에 토양정화의 주목적이 있다. 네덜란드의 토양법체계는 토양보호법을 기점으로 주변에 환경관리법, 건축법등을 통해 토양환경의 보전을 하고 있으며, 공장지대나 주유소는 토양보호법의 테두리안에서 별도의 명령을 통해 관리되고 있다. 아울러 정화의 책임을 명확히 하였으며, 정화의 책임순서로는 오염원인자, 소유자, 권리행사자 순으로 되어 있으며. 정화는 오염자 스스로 정화를 하도록 유도하고 그렇지 않을 경우에는 정부가 돈을 투자하여 정화를 행하고 있다. 아울러 건축물을 짓고자 할 경우에는 토양에 관한 조사를 하도록 하고 있으며, 토지를 사고 파는 과정에서는 반드시 토양의 질에 관한 정보를 확인하도록 행하고 있다.