Cultivation of aerobic granular sludge in a conventional, continuous flow, completely mixed activated sludge system Xi CHEN 1 ;Linjiang YUAN 1 ;Wenjuan LU 1 ;Yuyou LI 1, 2 ;Pei LIU 1 ;Kun NIE 1 ; 1. School of Environmental and Municipal Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China ; 2. Department of Environmental Science, Graduate School of Environmental Studies, Tohoku University, Sendai 980-8579, Japan ; Fig.2 Activated sludge in the reactors designated as: a seed sludge of Reactor I, b seed sludge of control reactor, c Neisser staining of the seed sludge in the control reactor, d and e granular sludge in Reactor I, f flocculated sludge in the control reactor Frontiers of Environmental Science & Engineering,2015,9(2),324-333. Doi:10.1007/s11783-014-0627-3