Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Analysis of the Linkage Effect by Component Technology in Low Impact Development Facilities

저영향개발 시설의 요소기술별 연계 효과 분석

  • Baek, Jongseok (Water Resource Research Center, K-water Convergence Institute) ;
  • Lee, Sangjin (Water Resource Research Center, K-water Convergence Institute) ;
  • Shin, Hyunsuk (Department of Civil and Environmental Engineering, Pusan National University) ;
  • Kim, Jaemoon (Department of Civil and Environmental Engineering, Pusan National University) ;
  • Kim, Hyungsan (Water Resource Research Center, K-water Convergence Institute)
  • 백종석 (K-water융합연구원 물순환연구소) ;
  • 이상진 (K-water융합연구원 물순환연구소) ;
  • 신현석 (부산대학교 사회환경시스템공학과) ;
  • 김재문 (부산대학교 사회환경시스템공학과) ;
  • 김형산 (K-water융합연구원 물순환연구소)
  • Received : 2018.09.06
  • Accepted : 2018.12.31
  • Published : 2019.01.30
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Abstract

Urbanization has led to extreme changes in land use on urban watersheds. Most cities are becoming residential, commercial and industrial areas, making infiltration and storage of rainfall less favorable. The demand for LID (Low Impact Development) technology is increasing in order to mitigate this water cycle distortion and return to existing hydrological conditions. The LID technique is effective in reducing runoff by permeating the urban impervious area. However, considering the limit of the installation area and the financial requirement of the installation, there is not much research on the linkage of each LID component technology for optimum efficiency according to the appropriate scale. In this study, the effects of the LID facilities applied to the target site were simulated using the SWMM model, suggesting the optimal linkage method considering interconnectivity, and applying the effects as an existing installation of individual facilities. The water balance at the time of application of the LID technology, short-term and long-term rainfall event were compared. Also, the individual application and the linkage application were compared with each other. If each component technology has sufficient processing size, then linkage application is more effective than individual application.

Keywords

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Fig. 1. Location of study area.

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Fig. 2. Design for SWMM model.

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Fig. 3. Applied component technologies by type.

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Fig. 4. Flowchart for LID linkage.

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Fig. 5. Precipitation by each percentile.

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Fig. 6. Water balance analysis by each events.

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Fig. 7. Ratio of runoff by rainfall intensity.

Table 1. Annual average precipitation in Suwon meteorological station

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Table 2. Monthly average evaporation and temperature in Suwon meteorological station in 10 years

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Table 3. Design for SWMM option

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Table 4. Applied component technologies by type

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Table 5. Linkage method of LID

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Table 6. Water balance analysis by short-term rainfall events

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Table 7. Water balance analysis for long-term rainfall events

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Table 8. Water balance analysis by drought and flooding year

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