The flushing is important to maintain good water quality in water main. It is a technique of using water velocity to remove sediments in water distribution system. The variety of water quality problems can occur in a distribution system, so too can a variety of benefits be gained by system flushing. In order to effectively perform the flushing, the contaminants to be removed to set up and it can be solved, it is necessary to ensure the proper flow rate. In this study, the removal of contaminants present in the inner water pipe attached loose deposits such as fine particles of granular activated carbon, sand and iron corrosion product sought to derive flow rates. Thus, the constant observation of using pilot plant scale water distribution plant for the movement of floating characteristics of particles were assessed.

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