[논문]유역의 토지이용 특성을 고려한 비점오염원 관리방안 적용에 따른 저감 효율 분석

최유진; 이서로; 금동혁; 한정호; 박운지; 김종건; 임경재

doi:10.15681/kswe.2020.36.5.405

유역의 토지이용 특성을 고려한 비점오염원 관리방안 적용에 따른 저감 효율 분석
Analysis of the Efficiency of Non-point Source Pollution Managements Considering the Land Use Characteristics of Watersheds 원문보기

한국물환경학회지 = Journal of Korean Society on Water Environment, v.36 no.5, 2020년, pp.405 - 422

최유진 (강원대학교 지역건설공학과) , 이서로 (강원대학교 지역건설공학과) , 금동혁 (한국수계환경연구소) , 한정호 (일리노이대학교 어바나 샴페인 농업생물공학과) , 박운지 (강원대학교 지역건설공학과) , 김종건 (강원대학교 지역건설공학과) , 임경재 (강원대학교 지역건설공학과)

Abstract ▼ AI-Helper

Land use change by urbanization has significantly affected the hydrological process including the runoff characteristics. Due to this situation, it has been becoming more complicated to manage non-point source pollutions caused by rainfall. In order to effectively control non-point sources, it is necessary to identify the reduction efficiency of the various management method based on land use characteristics. Thus, the purpose of this study is to analyze the reduction efficiency of non-point source pollution management practices targeting three different watersheds with the different land use characteristics using the Soil and Water Assessment Tool (SWAT). To do this, the vulnerable subwatersheds to non-point source pollution occurrence within each watershed were selected based on the streamflow and water quality simulation results. Then, considering the land use, low impact development (LID) or best management practices (BMPs) were applied to the selected subwatersheds and the efficiency of each management was analyzed. As a result of analysis of the non-point source pollution reduction efficiency, when LID was applied to urban areas, the average reduction efficiencies of SS, NO3-N, and TP were 5.92%, 4.62%, and 10.35%, respectively. When BMPs were applied to rural areas, the average reduction efficiencies of SS, TN and TP were 35.45%, 4.37%, and 10.16%, respectively. The results of this study can be used as a reference for determining appropriate management methods for non-point source pollution in urban, rural, and complex watersheds.

주제어

표/그림 (20)

그림 Fig. 1. Overview of this study.
그림 Fig. 2. Study area (Dochoncheon, Gongjicheon and Seolseongcheon).
표 Table 1. Land uses for the study area
표 Table 2. Discharge and pollutant load of the point source pollutant facilities
그림 Fig. 3. Location of calibration point and point source pollutant facilities.
표 Table 3. Evaluation Index (Moriasi et al., 2015)
표 Table 4. Coefficients of the regression equation for the urban water pollutant load estimation (Driver and Tasker, 1988)
표 Table 5. Parameters calibrated for Dochoncheon, Gongjicheon and Seolseongcheon watershed
그림 Fig. 4. Calibration and validation results of flow.
그림 Fig. 5. Calibration and validation results of SS.
그림 Fig. 6. Calibration and validation results of TN.
그림 Fig. 7. Calibration and validation results of TP.
그림 Fig. 8. Reservoir simulation result of the Yongpung reservoir (S2).
표 Table 6. Statistical comparison between observed and simulated flow, SS, TN and TP
표 Table 7. Pollutant load rankings and ratios of urban and rural areas to each sub-watershed area.
그림 Fig. 9. Ranking of pollutant loads for each sub-watershed and the selected vulnerable sub-watersheds.
표 Table 8. Reduction efficiency of LID in the Dochoncheon and Gongjicheon watersheds
표 Table 9. Reduction efficiency of BMPs in the Gongjicheon and Seolseongcheon watersheds
표 Table 10. Reduction efficiency of LID at the final outlet in the Dochoncheon and Gongjicheon watersheds
표 Table 11. Reduction efficiency of BMPs at the final outlet in the Gongjicheon and Seolseongcheon watersheds

질의응답

핵심어	질문	논문에서 추출한 답변
	비점오염원은 무엇인가?	, 2017; Wolfe, 2001)에도 영향을 미친다. 비점오염원은 도시, 도로, 농지 등 불특정 장소에서 불특정하게 수질오염 물질을 배출하는 배출원을 의미하며(Ki et al., 2019; ME, 2007), 이러한 비점오염원의 유출 특성 변화는 오염원 관리의 어려움을 야기시킨다(Relevant Ministerial Consortuim, 2012).
	본 연구에서 SWAT 모형을 활용하기 위하여 어떤 입력 자료를 구축하였는가?	본 연구에서는 토지이용 특성을 고려한 비점오염 관리방안 시나리오 적용에 따른 비점오염원 저감효율을 산정하기 위해 SWAT 모형을 활용하였다. 이를 위해 도촌천, 공지천, 설성천 유역에 대한 수문 및 비점 모의를 위해 각 유역의 입력 자료를 구축하였다. 유역별 입력 자료 중 도촌천 유역의 기상 자료는 성남 기상관측소, 공지천은 춘천 기상관측소, 설성천은 장호원 기상관측소의 관측 자료를 활용하였다.
	비점오염 관리방안의 효율 평가를 위한 연구는 어떻게 구분할 수 있는가?	비점오염원 관리를 위한 비점오염 관리방안의 효율을 평가하기 위해 다양한 연구가 진행되고 있다. 비점오염 관리방안의 효율 평가를 위한 연구는 실제 현장에 비점오염 관리방안을 적용하여 효율을 평가하거나 유역모델링을 통해 비점오염 관리방안의 효율을 평가하는 연구로 구분할 수 있다. 실제 현장에서 비점오염 관리방안을 적용하여 효율을 분석한 연구를 살펴보면, Won et al.

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저자의 다른 논문 :

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