2.0) was produced and it can be stored stably more than half a year. It can produce high quality PAC with high content of Ali3 industrially and continuously. A new approach for industrial production of inorganic polymer flocculant was therefore invented. The species distribution of hydrolyzed Al(IH), the aggregation configuration, the characteristics of crystal and the size distribution of E-PAC were characterized by using Al-Ferron time complex colorimetric method, 27 Al NMR spectroscopy, dynam