... valence metal ions.Use: (1) Industrial waste water treatment:For the neutral or alkaline waste water with pH value of 7-14 ... charge, it has the best treating effect, such as the waste water from iron industry, electroplating factory, metallurgical industry, coal washing ... long fiber paper-making, and also the flocculants for the waste water from the paper-making. Molecular weight (million)18-2515 ...