동관에서 pH, 알칼리도, 염소이온이 부식에 미치는 영향

• 영문명: Effects of pH, Alkalinity, Chloride Ion on the Copper Pipe Corrosion
• 발행기관: 한국환경보건학회
• 저자명: Jo, Kwan-Hyung Kim, Sun-Il Woo, Dal-Sik
• 간행물 정보: 『한국환경보건학회지』제33권 제1호, 43~48쪽, 전체 6쪽
• 주제분류: 공학 > 환경공학
• 파일형태: PDF
• 발행일자: 2007.02.28

영문 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

pitting corrosion pitting index alkalinity chloride ion distribution system