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Effect of corrosive water quality control and corrosion index monitoring in pilot scale pipeline simulator

파일럿 규모 모의관로에서 부식성 수질제어 효과와 부식지수 모니터링

  • Kim, Do-Hwan (Water Quality Institute, Busan Water Authority) ;
  • Kim, Yung-Jin (Water Quality Institute, Busan Water Authority) ;
  • Son, Hee-Jong (Water Quality Institute, Busan Water Authority) ;
  • Ryou, Dong-Choon (Water Quality Institute, Busan Water Authority) ;
  • Ahn, Jun-Young (Department of Civil & Environmental Engineering, Pusan National University) ;
  • Kim, Cheolyong (Department of Civil & Environmental Engineering, Pusan National University) ;
  • Hwang, In-Seong (Department of Civil & Environmental Engineering, Pusan National University)
  • 김도환 (부산광역시 상수도사업본부 수질연구소) ;
  • 김영진 (부산광역시 상수도사업본부 수질연구소) ;
  • 손희종 (부산광역시 상수도사업본부 수질연구소) ;
  • 류동춘 (부산광역시 상수도사업본부 수질연구소) ;
  • 안준영 (부산대학교 사회환경시스템공학과) ;
  • 김철용 (부산대학교 사회환경시스템공학과) ;
  • 황인성 (부산대학교 사회환경시스템공학과)
  • Received : 2018.01.17
  • Accepted : 2018.03.28
  • Published : 2018.04.16

Abstract

Applicability of corrosion inhibitor was evaluated using pilot scale water distribution pipe simulator. Calcium hydroxide was used as corrosion inhibitor and the corrosion indices of the water were investigated. Corrosion indices, Langelier saturation index (LI) increased by 0.8 and calcium carbonate precipitation potential (CCPP) increased by 9.8 mg/L. This indicated that corrosivity of water decreased by corrosion inhibitor and the effects lasted for 18 days. Optimum calcium hydroxide dose was found to be 3~5 mg/L for corrosion inhibition. We suggest that monitoring of CCPP as well as LI need to be conducted to control corrosivity of water.

Keywords

References

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