한국물환경학회지 (Journal of Korean Society on Water Environment)

  • 제34권6호
  • /
  • Pages.669-677
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  • 2018
  • /
  • 2289-0971(pISSN)
  • /
  • 2289-098X(eISSN)
한국물환경학회 (Korean Society on Water Environment)
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단독주택단지의 빗물이용시설 적정 규모 설정 연구

A Study on the Optimum Size of Rainwater Utilization in Detached Residential Complex

  • 백종석 (K-water융합연구원 물순환연구소) ;
  • 김형산 (K-water융합연구원 물순환연구소) ;
  • 신현석 (부산대학교 사회환경시스템공학과) ;
  • 김재문 (부산대학교 사회환경시스템공학과) ;
  • 박경재 (울산광역시 도시계획과)
  • Baek, Jongseok (Water Resources Research Center, K-water Convergence Institute) ;
  • Kim, Hyungsan (Water Resources 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) ;
  • Park, Kyungjae (Division of City Planning, Ulsan Metropolitan City)
  • 투고 : 2018.10.10
  • 심사 : 2018.11.28
  • 발행 : 2018.11.30
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초록

Torrential rain and drought are repeated due to the increase in the unpredictable fluctuating of rainfall patterns. It is time for stabilize water resource management in terms of disaster prevention. Distributed control from sources is needed to minimize damages caused by torrential rains and droughts. Rain barrel can be used to reduce the runoff as they collect and store rainwater. In response to this situation, Seoul Metropolitan Government and other local governments implemented a project to support the installation of rain barrel and provided 90% of the cost of installing it in private areas. However, with limited budget, it is difficult to distribute rainwater to the city which is mostly covered by private areas. In this study, Samho-dong, Ulsan, where pilot projects of water cycle leading city are underway, analyzed the effects of reducing the runoff with respect to the amount of rainwater that can be used, and analyzed the economics of recoverable investment cost when installed. From the analysis, it was established that it is possible to show sufficient efficiency with a small capacity without the need to install large rain barrel effectively in the private sector, and to support the installation cost of less than 70 percent of the rainwater can be recovered.

키워드

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Fig. 1. Location of study area.

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Fig. 2. Design for SWMM model.

Table 1. Landuse of study area

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Table 2. Design of SWMM model options

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Table 3. Scenario classification by capacity of rain barrel

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Table 4. Availability of rainwater reuse

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Table 5. Estimate method of cost-benefit for LID application

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Table 7. Calculation of actual cost of rain barrel support project of Ulsan in 2018

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Table 6. Annual average for real discount rate

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Table 8. Setting for installation cost of rain barrel

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Table 9. Estimation method of direct benefit

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Table 10. Water balance analysis of Samho in Ulsan

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Table 11. Calculation of annual cost-benefit for rain barrel

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Table 12. Cost-benefit curves for each scenario based on support ratio

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