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RISS 인기검색어
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- 저자 : 신은성 ( Ji Yong Choi (검색결과 4 건)
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토지용도와 유역특성을 고려한 비점오염물질 원단위 산정에 관한 연구
신은성(Eun Sung Shin),최지용(Ji Yong Choi),이동훈(Dong Hoon Lee) 한국물환경학회 2001 한국물환경학회지 Vol.17 No.2
For issues of integrated water quality management, a thorough investigation on both point source and non-point source of pollution loaded from streamlets to rivers should be conducted. Also, it is necessary to investigate the relationship between land use, pollutant discharge from non-point sources, and the unit load and its contribution to total pollution loadings. The objectives of this study is to estimate the unit load by land use and livestock breeding level in order to promote effective management of the non-point source of pollution in rural areas. The watershed under investigation consists of eleven sub-basins(smaller than 500ha) located in Chunchon city in Kangwon Province. Flow and quality parameters, such as biochemical oxygen demand(BOD), chemical oxygen demand(COD), suspended solids(SS), total nitrogen(T-N), and total phosphorous(T-P), are determined. The results are summarized below: 1. Annual runoff loading of SS. BOD, COD, T-P, and T-N were estimated to be 423.4, 20.0, 56.6, 2.6, 20.9㎏/ha.yr respectively. 2. Runoff loadings by landuse appeared to have following relationship. ·COD : L(㎏/yr) = 187.3 × Paddy + 110.1 × Field + 24.3 × Moun. (R² = 0.92) ·T-N : L(㎏/yr) = 77.8 × Paddy + 26.1 × Field + 11.1 × Moun. (R² = 0.96) ·T-P : L(㎏/yr) = 14.8 × Paddy + 4.3 × Field + 0.3 × Moun. (R² = 0.96) 3. Considering livestock breeding level, the runoff loading by land use were observed as below: ·COD : L(㎏/yr) = 173.6×Paddy+63.0×Field+24.8×Moun.+14.7LU(R² = 0.93) ·T-N : L(㎏/yr) = 74.3×Paddy+l4.0×Field+11.2×Moun. + 3.8LU(R² = 0.97) ·T-P : L(㎏/yr) = 7.7×Paddy+ 4.2×Field+ 0.3×Moun. + 0.3LU(R² = 0.98)
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신은성(Eun Sung Shin),최지용(Ji Yong Choi),이동훈(Dong Hoon Lee) 한국물환경학회 2001 한국물환경학회지 Vol.17 No.3
The principal non-point sources of water pollution from agriculture has been known as nutrients, organic matters, sediments, fertilizer and toxic chemicals. Among all of these pollutants, nutrients give a significant impact on water quality, such as eutrophication. For issues of integrated water quality management, a thorough investigation on both point source and non-point source of pollution loaded from streamlets to rivers should be conducted. Therefore, it is necessary to investigate the relationship between land use, pollutant discharge from non-point sources, and the unit load and its contribution to total pollution loadings. The objectives of this study is to investigate the surface runoff characteristics of agricultural pollutants from non-point sources by land use in order to promote effective management of the non-point source of pollution in rural areas. The watershed under investigation consists of eleven basins(smaller than 500ha)located in Chunchon city in Kangwon Province. Flow and quality parameters, such as biochemical oxygen demand(BOD), chemical oxygen demand(COD), suspended solids(SS), total nitrogen(T-N), and total phosphorous are summarized below : 1. Slower runoff flow was observed in rural areas than areas of built-up(urban areas). Peak SS and T-P concentrations were observed prior to the flow. T-N was decreased as flow increased due to high ratio of NO₃-N. 2. The concentration graph of SS and T-P, and flow was appeared to be a clock-wise hook-shape curve. The maximum concentration was observed on the point of maximum flow. However, the concentration of T-N showed on opposite curve to the graph above.
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최지용,신은성 ( Ji Yong Choi,Eun Sung Shin ) 한국물환경학회 1997 한국물환경학회지 Vol.13 No.4
To assist in the dissemination of water quality information to expert as well as layman, Korea Water Quality Index(K-WQI) has been developed. The K-WQI is based on ten physico-chemical and biological determinants which were adopted by an intensive interview and questionnaire survey, and a review of water quality criteria. The sub-index is developed by use of both opinion research and mathematical techniques. The former involves the completion of a series of questionnaires by a panel of water experts thus facilitating the objective selection, transformation and weighting of determinants. The latter involves the use of regression for the construction of the sub-index functions. Aggregation for sub-index is used weighted product function. The weighted product, when applied to decreasing scale subindices, does not exhibit eclipsing. Application of the K-WQI to water quality data, drawn from a selection of Korean river reaches typifying a range of river qualities, has shown that the Index not only act as indicators of water quality change, but can also indicate the effects of these changes on potential water use.
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최지용(Ji Yong Choi),신은성(Eun Sung Shin),이동훈(Dong Hoon Lee) 한국물환경학회 1999 한국물환경학회지 Vol.15 No.3
Urban areas contribute the highest nan-point source pollutant loading per unit area and not only customary pollutants but hazardous materials as well, thus urban areas have a great impact on water quality. In this paper, in order to estimate the urban non-point source pollutant loading in the Han River watershed, the Kuui and the Noryangjin basins were selected as representative spots and equipped with the water quality automatic monitoring system. These basins are located in the up and down stream of the urban area (Seoul). In this study, analysis on non-point source pollutant loading in regards to precipitation, runoff and water duality were investigated COD and SS parameters were selected to calculate unit loading data because these entities have a close relationship with non-point source pollution The results revealed that annual non-point source pollutant COD loading was 2,004 tons/yr, which is approximately 15% of the total COD loading of 13,874 tons/yr and annual non-point source pollutant SS loading was 29,631 tons/yr, which is 28% of the total SS loading of 75,285 tons/yr.
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