Journal of Korean Society of Water and Wastewater (상하수도학회지)

The Korean Society of Water and Wastewater (대한상하수도학회)
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A study on the evaluation for variation of revenue water ratio considering water supply area conditions and the development of proper cost estimation model of project for improvement of revenue water ratio

급수지역 여건을 고려한 유수율 변동 분석 및 적정 유수율 제고 사업비 산정 모델 개발

  • Kiwon Kwon (Department of Environmental Engineering, University of Seoul) ;
  • Jinseok Hyung (Department of Environmental Engineering, University of Seoul) ;
  • Taehyeon Kim (Department of Environmental Engineering, University of Seoul) ;
  • Haekeum Park (Department of Environmental Engineering, University of Seoul) ;
  • Yoojin Oh (Department of Environmental Engineering, University of Seoul) ;
  • Jayong Koo (Department of Environmental Engineering, University of Seoul)
  • 권기원 (서울시립대학교 환경공학과) ;
  • 형진석 (서울시립대학교 환경공학과) ;
  • 김태현 (서울시립대학교 환경공학과) ;
  • 박해금 (서울시립대학교 환경공학과) ;
  • 오유진 (서울시립대학교 환경공학과) ;
  • 구자용 (서울시립대학교 환경공학과)
  • Received : 2023.09.26
  • Accepted : 2023.12.11
  • Published : 2023.12.15
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Abstract

In this study, we analyzed how the revenue water ratio(RWR) is affected by changes in conditions of the water supply area, such as the ratio of aging pipes, maintenance conditions, and revenue water. As a result of analyzing the impact of pipe aging and maintenance conditions on the RWR, it was confirmed that the RWR could be decreased if the pipe replacement project to improve the aging pipe ratio was not carried out and proper maintenance costs were not secured. It was also confirmed that an increase in the revenue water could be operated to facilitate the achievement of the project's target RWR. In contrast, a decrease in the revenue water due to a population reduction could affect the failure of the target RWR. In addition to analyzing the causes of variation in the RWR, the calculation of estimated project costs was considered by using leakage reduction instead of RWR from recent RWR improvement project cost data. From this analysis, it was reviewed whether the project costs planned to achieve the target RWR of the RWR improvement project in A city were appropriate. In conclusion, the RWR could be affected by variations in the ratio of aging pipes, maintenance conditions, and revenue water, and it was reasonable to consider not only the construction input but also the input related to RWR improvement, such as leakage reduction, when calculating the project cost.

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