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Analysis of Fouling Propensity due to Scale Formation in the Treatment of Shale Gas Produced Water Using Direct Contact Membrane Distillation (DCMD)

직접 접촉식막증발을 이용한 셰일가스 발생수의 처리에서 스케일 형성에 의한 막오염 경향 분석

  • Shin, Yonghyun (School of Civil and Environmental Engineering, Kookmin University) ;
  • Ko, Younghoon (School of Civil and Environmental Engineering, Kookmin University) ;
  • Choi, Yongjun (School of Civil and Environmental Engineering, Kookmin University) ;
  • Lee, Sangho (School of Civil and Environmental Engineering, Kookmin University) ;
  • Sohn, Jinsik (School of Civil and Environmental Engineering, Kookmin University)
  • 신용현 (국민대학교 건설시스템공학과) ;
  • 고영훈 (국민대학교 건설시스템공학과) ;
  • 최용준 (국민대학교 건설시스템공학과) ;
  • 이상호 (국민대학교 건설시스템공학과) ;
  • 손진식 (국민대학교 건설시스템공학과)
  • Received : 2016.05.31
  • Accepted : 2016.08.30
  • Published : 2016.10.31

Abstract

Shale gas has become increasingly important as a viable alternative to conventional gas resources. However, one of the critical issues in the development of shale gas is the generation of produced water, which contains high concentration of ionic compounds (> TDS of 100,000 mg/L). Accordingly, membrane distillation (MD) was considered to treat such produced water. Experiments were carried out using a laboratory-scale direct contact MD (DCMD). Synthetic produced water was prepared to examine its fouling propensity in MD process. Antiscalants and in-line filtration were applied to control fouling by scale formation. Fouling rates (-dJ/dt) were calculated for in-depth analysis of fouling behaviors. Results showed that severe fouling occurred during the treatment of high range produced water (TDS of 308 g/L). Application of antiscalant was not effective to retard scale formation. On the other hand, in-line filtration increased the induction time and reduced fouling.

Keywords

References

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