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.

ABSTRACT
 1. 서 론
 2. 실험재료 및 방법
  2.1 부식성 수질제어 파일럿 플랜트와 실험방법
  2.2 수질분석 및 부식지수 모니터링
  2.3 부식지수 산출방법
 3. 결과 및 고찰
  3.1 소석회 주입 농도에 따른 수질변화 특성
  3.2 부식성 수질제어에 따른 모의관로 내부 수질변화및 부식지수 모니터링
  3.3 관내 유속변화에 따른 부식성 수질제어 특성
 4. 결 론
 사 사
 Reference

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