Poly aluminum chloride manufacturers of aluminum chloride for printing and dyeing wastewater application Poly aluminum chloride manufacturers PAC PAC is a high polymer inorganic coagulant electrolyte coagulants, water treatment is one of the most commonly used flocculants, In the treatment of printing and dyeing wastewater in the most common. Polyaluminum chloride manufacturers PAC is an efficient water purifying agent, can sterilization, deodorant, bleaching, etc., as pure water treatment, drinking water treatment, for tanning, medicine, cosmetics and precision casting and more A field, especially aluminum chloride white aluminum chloride manufacturers can also be used for paper sizing precipitator, sugar bleaching clarifier. At present, many domestic printing and dyeing plant biochemical regulation of the printing and dyeing wastewater in the pool, based on reactive dyes, supplemented by direct dyes. Of course, the waste water produced by these plants belongs to the high-chroma, high-concentration waste water. When the waste water is treated by the coagulation method, when the PAC dosage is 700-900 mg / L and the pH value is controlled at 5.4-6.6, Decolorization rate of up to 93%, and PAC than other flocculants produced by alum large settling velocity, in addition, Zhengzhou Yuan Jie Environmental Technology Co., Ltd. also found that for reactive dyes-based printing and dyeing wastewater, PAC investment Dosage than when dealing with hydrophobic dyes dosing more. When polyaluminum chloride (PAC) was used to treat the production of bromamine reactive dye wastewater, when the dosage of PAC was 2g / L, the decolorization rate and COD removal rate were above 90%. In addition, through the research on the decolorization mechanism of dyeing wastewater, the further study shows that the pH value of decolorization of polyacetic aluminum is wide, and the optimal decolorization effect can be obtained for most dye wastewater. However, Nitrogen, low molecular weight water-soluble groups more hydrophilic dyes, you can not use poly aluminum flocculant bleaching.