Journal of Environmental Health Sciences (한국환경보건학회지)

Korean Society of Environmental Health (한국환경보건학회)
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The Influence of Chlorine Application on Corrosion and Bacterial Growth in Home Plumbing Systems

급수관내 염소 주입이 미생물의 증식과 부식에 미치는 영향

  • Kim, Tae-Hyun (Department of Environmental Engineering Konkuk University) ;
  • Lee, Yoon-Jin (Department of Environmental Engineering Cheongju University) ;
  • Lim, Seung-Joo (Department of Civil, Construction & Environmental Engineering Iowa State University)
  • 김태현 (건국대학교 환경공학과) ;
  • 이윤진 (청주대학교 환경공학과) ;
  • 임승주 (아이오와 주립대학교, 토목, 건설, 환경공학부)
  • Published : 2006.10.31
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Abstract

This research was conducted using a model home plumbing system composed of copper, stainless steel, galvanized iron, carbon steel, and PVC (polyvinyl chloride) pipe. The number of bacteria present in stainless steel pipe and PVC was higher than other pipes. High turbidity and zinc release were found in galvanized iron pipe material and detected during the first 6 months. Conversely, there was a decrease in turbidity and zinc release after 6 months resulting in levels similar to other pipes. Copper concentration decreased as operation times increased. In this experiment, the number of bacteria detected in biofilm for a copper pipe continued to increase. Pipe material influenced bacterial numbers in biofilm and water. This showed that elevated chlorine could not control bacterial growth in biofilm for galvanized iron and stainless steel systems. It also suggested that the dosing of chlorine might not be available for all kinds of pipes. Therefore, another complementary method should be introduced to manage biofilm effectively in water distribution systems.

Keywords

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