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Analysis on Effectiveness of Sewer Rehabilitation Project and Study on Improvement of Fixed Flow Meters

하수관거정비사업의 사업효과 분석 및 유량계 설치 개선방안에 관한 연구

  • An, Dae Hoon (Water Supply Total Service Center, Korea Environment Corporation) ;
  • Kim, Jong Oh (Department of Urban Engineering, Gyeongsang National University)
  • 안대훈 (한국환경공단 수도통합서비스센터) ;
  • 김종오 (국립경상대학교 도시공학과)
  • Received : 2013.06.10
  • Accepted : 2013.09.03
  • Published : 2013.11.30

Abstract

Even though a sewer rehabilitation BTL project has been executed throughout the nation with the input of a significant amount of budget, the overall review on effectiveness of the project is insufficient. And disputes over effectiveness of the project and of the employment of I/I indexes for evaluation of the project are continued due to reliable issues of flux data which has been measured after completion of certain projects and excessive amounts of I/I. Thus, this study has reviewed effectiveness of the project, current status and problems of the installation of fixed flow meters as well as countermeasures based on 15 projects subject to the operation performance evaluation after the completion of the project. The review on operation of the project has revealed that sewer rehabilitation BTL projects are significantly effective and highly effective on reducing a rate of infiltration water. The review on the employment of proper countermeasures for main issues revealed during the investigation on the installation and operation of fixed flow meters has shown that such countermeasures could result in securing more reliable flux data.

하수관거정비 임대형민자사업(BTL)은 많은 예산이 투입되어 전국적으로 시행되었으나 사업시행 후 나타난 사업효과에 대한 종합적인 검토는 미흡한 실정이다. 또한, 일부 사업의 경우 준공 후 측정된 유량 Data의 신뢰성 문제 및 과다한 I/I(침입수/유입수) 발생량 등으로 인해 사업의 성과에 대한 문제제기와 I/I지표의 운영평가 적용과 관련한 논란이 지속적으로 제기되고 있는 실정이다. 따라서 본 연구에서는 '05년 JC군 하수관거정비 임대형민자사업(BTL) 등 시설물 준공 후 운영성과평가가 진행 중인 연구대상 사업 15개 사업에 대하여 사업효과분석, 유량계 설치 실태 분석 및 개선방안 등을 검토하였다. 검토결과 하수관거정비 임대형민자사업(BTL) 시행 후 하수처리장 운영효율 개선, 하수관거 침입수 발생비율 저하, 주변하천 수질개선 등의 효과가 나타난 것으로 분석되었으며, 유량계 설치 및 운영 현황 조사결과 나타난 주요 문제점에 대해서는 본 연구의 개선방안 적용시 보다 신뢰성 있는 유량 데이터가 확보될 수 있는 것으로 검토되었다.

Keywords

References

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Cited by

  1. A Study on Improvement of Inflow/Infiltration Computation and Application Method in Sewer Rehabilitation Project vol.28, pp.1, 2014, https://doi.org/10.11001/jksww.2014.28.1.33
  2. Investigation and Analysis for Outside Project Area for Understanding the Case of Effectiveness Reduction of BLT Project vol.18, pp.5, 2018, https://doi.org/10.9798/KOSHAM.2018.18.5.311