한국환경보건학회지 (Journal of Environmental Health Sciences)

  • 제33권1호
  • /
  • Pages.43-48
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  • 2007
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  • 1738-4087(pISSN)
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  • 2233-8616(eISSN)
한국환경보건학회 (Korean Society of Environmental Health)
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동관에서 pH, 알칼리도, 염소이온이 부식에 미치는 영향

Effects of pH, Alkalinity, Chloride Ion on the Copper Pipe Corrosion

  • 조관형 (청운대학교 건설토목환경공학과) ;
  • 김선일 (한국화학시험연구원) ;
  • 우달식 ((재)한국계면공학연구소)
  • Jo, Kwan-Hyung (Department of Civil & Environmental Engineering, Chungwoon University) ;
  • Kim, Sun-Il (Korea Testing and Research for Chemical Industry) ;
  • Woo, Dal-Sik (Korea Interfacial Science and Engineering Institute)
  • 발행 : 2007.02.28
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초록

This study investigated the effects of pH, alkalinity, and chlorine ion which are important water quality impact factors to the corrosion in the simulated distribution system where the copper pipe is affixed. The result shows that pitting index was increased as the alkalinity and chloride ion increase in the distilled water, but there was no relation to pH. Actually the uniform corrosion rate was decreased as the pH increase with the laboratory tap water. In conclusion, it is necessary to control the pH which stands above minimum 7.5 to prevent pitting corrosion in the copper pipe. Consequently, comprehensive research about the effect of lime soda($Ca(OH)_2$) which was used as a coagulation additive in the water treatment plant to pipe corrosion must be accomplished additionally.

키워드

참고문헌

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