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Optimization of energy efficiency through comparative analysis of factors affecting the operation with energy recovery devices on SWRO desalination process

역삼투막 해수담수화 공정에서 에너지 회수장치의 운영인자 비교분석을 통한 에너지 효율 최적화 연구

  • Kim, Pooreum (Sungkyunkwan University Graduate School of Water Resources) ;
  • Kim, Hyungsoo (Sungkyunkwan University Graduate School of Water Resources) ;
  • Park, Junyoung (Center of Built Environment, SungKyunKwan University) ;
  • Kim, Taewoo (Architectural and Environmental Systems Engineering, SungKyunKwan University) ;
  • Kim, Minjin (Sungkyunkwan University Graduate School of Water Resources) ;
  • Park, Kitae (Sungkyunkwan University Graduate School of Water Resources) ;
  • Kim, Jihoon (Sungkyunkwan University Graduate School of Water Resources)
  • 김푸름 (성균관대학교 수자원전문대학원) ;
  • 김형수 (성균관대학교 수자원전문대학원) ;
  • 박준영 (성균관대학교 건설환경연구소) ;
  • 김태우 (성균관대학교 건설환경시스템공학과) ;
  • 김민진 (성균관대학교 수자원전문대학원) ;
  • 박기태 (성균관대학교 수자원전문대학원) ;
  • 김지훈 (성균관대학교 수자원전문대학원)
  • Received : 2017.11.28
  • Accepted : 2017.12.26
  • Published : 2018.02.15

Abstract

Recently, interest in the development of alternative water resources has been increasing rapidly due to environmental pollution and depletion of water resources. In particular, seawater desalination has been attracting the most attention as alternative water resources. As seawater desalination consumes a large amount of energy due to high operating pressure, many researches have been conducted to improve energy efficiency such as energy recovery device (ERD). Consequently, this study aims to compare the energy efficiency of RO process according to ERD of isobaric type which is applied in scientific control pilot plant process of each $100m^3/day$ scale based on actual RO product water. As a result, it was confirmed that efficiency, mixing rate, and permeate conductivity were different depending on the size of the apparatus even though the same principle of the ERD was applied. It is believed that this is caused by the difference in cross-sectional area of the contacted portion for pressure transfer inside the ERD. Therefore, further study is needed to confirm the optimum conditions what is applicable to the actual process considering the correlation with other factors as well as the factors obtained from the previous experiments.

Keywords

References

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