... Accepted July 21, 2010. - 251 - Formation of Aerobic Granular Sludge in a Continuous -Flow Reactor – Control Strategy for the Selection of Well-Settling Granular Sludge - Naohiro KISHIDA*, Atsushi ... *Department of Water Supply Engineering, National Institute of Public Health, 2-3 -6 Minami, Wako, Saitama 35 1-0 197, Japan **Department of Chemical Engineering, Waseda University, 3-4 -1 Okubo, Shinjuku-ku, ... granular sludge technology, establishment of a - 252 - formation method in a continuous -flow reactor is very important because continuous -flow reactors are more popular than SBRs all over the world....