Membrane and Water Treatment

  • 제8권2호
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  • Pages.137-147
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  • 2017
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  • 2005-8624(pISSN)
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  • 2092-7037(eISSN)
테크노프레스 (Techno-Press)
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DOI QR Code

Economical selection of optimum pressurized hollow fiber membrane modules in water purification system using RbLCC

  • Lee, Chul-sung (Department of Civil and Environmental Engineering, Dankook University) ;
  • Nam, Young-wook (Department of Civil and Environmental Engineering, Dankook University) ;
  • Kim, Doo-il (Department of Civil and Environmental Engineering, Dankook University)
  • 투고 : 2016.07.29
  • 심사 : 2016.10.12
  • 발행 : 2017.03.25
⟨ 이전 논문 다음 논문 ⟩

초록

A water treatment utility in South Korea operates a large system of pressurized hollow fiber membrane (PHFM) modules. The optimal selection of membrane module for the full scale plant was critical issue and carried out using Risk-based Life Cycle Cost (RbLCC) analysis based on the historical data of operation and maintenance. The RbLCC analysis was used in the process of decision-making for replacing aged modules. The initial purchasing cost and the value at risk during operation were considered together. The failure of modules occurs stochastically depending on the physical deterioration with usage over time. The life span of module was used as a factor for the failure of Poisson's probability model, which was used to obtain the probability of failure during the operation. The RbLCC was calculated by combining the initial cost and the value at risk without its warranty term. Additionally, the properties of membrane were considered to select the optimum product. Results showed that the module's life span in the system was ten years (120 month) with safety factor. The optimum product was selected from six candidates membrane for a full scale water treatment facility. This method could be used to make the optimum and rational decision for the operation of membrane water purification facility.

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과제정보

연구 과제 주관 기관 : Dankook University

참고문헌

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피인용 문헌

  1. Prioritizing water distribution pipe renewal based on seismic risk and construction cost vol.12, pp.5, 2017, https://doi.org/10.12989/mwt.2021.12.5.195