摘要：Cyanobacterial bloom has become a serious environmental threat throughout the world. In particular, the presence of microcystins (MCs), has become a severe problem. Thus, it is essential to develop technologies for removing cyanobacterial cells and cyanotoxins simultaneously. In the present study, a calcium-hydroxide-modified, autoclaved fly-ash brick powder flocculant was developed. The factors influencing the removal of Microcystis aeruginosa by the modified flocculant, including the calcium hydroxide concentration, the particle size of the autoclaved fly-ash brick powder and additional dosages of the autoclaved fly-ash brick powder, were investigated to determine the ideal conditions for preparation. Under the optimal conditions, the removal efficiency of M. aeruginosa cells by the modified ^occulants was 93.98%, and 35.02% of MCs was removed in a 1 mg/L solution of MC at 10 g/L of an additional concentration of the modified flocculant. The results indicate that the calcium-hydroxide-modified, autoclaved fly-ash brick powder flocculants could effectively remove M. aeruginosa cells and microcystins.
