Promote the settlement of pulverized coal washing wastewater, starch manufacturing starch recovery. e, all kinds of industrial wastewater treatment: printing and dyeing wastewater, sugar refining. i, pharmaceutical refining m, quick-setting cement, coal washing wastewater, mine waste water, cloth wrinkle-free. k, catalyst support. l, urban sewage treatment. d, casting molding. j, industrial water purification. c, leather waste water, fluorine-containing waste water, brewing waste water, metallurgy waste water, paper sizing. h, sewage treatment. g, meat processing wastewater f, heavy metal wastewater, oily wastewater, paper waste water, industrial waste water and waste recycling of useful substances, and for the treatment of lubricants and anthraquinone and so on. Polyaluminum chloride can be used as water purification agent. Polyaluminium chloride Uses: a, urban water supply and drainage purification: river water, reservoir water, groundwater. b Aluminum chloride Use For organic synthesis and petroleum industry catalyst