Tuberculation and slime accumulated in water mains play an important role in modifying water quality of drinking water. Therefore, in this study, it was investigated that what materials were accumulated, and what components were included in the tuberculation and slime of water mains. The Various tuberculation and slime sample were collected from the 12 water mains to analyze their physical and chemical properties and crystal structure. As a analysis method, VSS(Volatile suspended solid), SEM(scanning electron microscope), EDS(Energy Dispersive X-ray spectroscope), ICP(Inductively Coupled Plasma Mass Spectrometer) and XRD(X-Ray Diffractomete) were used. The results of analysis on the samples, the representative materials were verified such as iron corrosion products, the fine sand particles generated during backwash, fine particles of activated carbon, aluminum used in coagulation process, and manganese included in raw water.

• 배철호(K-water연구원 상하수도연구소) | Cheol-Ho Bae (Water and Wastewater Research Center, K-water Research Institute, Korea Water Resources Corporation)
• 최두용(K-water연구원 상하수도연구소) | Doo-Yong Choi (Water and Wastewater Research Center, K-water Research Institute, Korea Water Resources Corporation)
• 이두진(K-water연구원 상하수도연구소) | Doo-Jin Lee (Water and Wastewater Research Center, K-water Research Institute, Korea Water Resources Corporation) Corresponding author
• 김도환(부산광역시 상수도사업본부 수질연구소) | Do-Hwan Kim (Water Quality Institute, Busan Water Authority)