Polyaluminium chloride in the pharmaceutical industry wastewater flocculation effect Polymerization of aluminum chloride Pharmaceutical wastewater treatment process in the pharmaceutical industry through prior knowledge of many of the contaminants contained in pharmaceutical wastewater through the polymerization of aluminum chloride flocculation decomposition of its toxic water , Harmful and difficult to degradation of microorganisms, and gradually ease the pollution in the water, in order to achieve a purifying purpose. Due to the obvious acidity and alkalinity in the pharmaceutical wastewater, part of the sewage contains too much salt, which is a kind of sewage that is more difficult to deal with. The characteristics of the water quality of pharmaceutical wastewater make the majority of pharmaceutical wastewater alone biochemical method simply failed to meet the standard, so the biochemical treatment must be carried out before the necessary pretreatment. According to the characteristics of the water quality of pharmaceutical wastewater, in the process of its treatment, physical and chemical treatment need to be used as biochemical treatment pretreatment or post-treatment process. At present, the physical and chemical treatment methods include coagulation, air flotation, adsorption, ammonia stripping, electrolysis, ion exchange and membrane separation. It is widely used in the pretreatment and post-treatment of pharmaceutical wastewater such as polyaluminum chloride, aluminum sulfate and polyferric sulfate, etc. for the treatment of traditional Chinese medicine Waste water and so on. The key to efficient coagulation is the proper choice and addition of superior coagulants. In the selection of pharmaceutical wastewater flocculant, the inorganic polymer flocculant is better than the inorganic low molecular weight salt flocculant. In inorganic polymer flocculant. Polymeric ferric sulfate compared with polyaluminum chloride, polymeric ferric sulfate COD removal rate higher, faster settling; but because of the polymerization of aluminum sulfate itself color, the color removal rate is inferior to polyaluminum chloride PAC. Polyaluminum chloride and polyferric sulfate and organic polymer flocculant can improve the flocculation effect. However, inorganic flocculant should be dosed before adding organic polymer flocculant. I hope the above analysis can help you in the pharmaceutical industry wastewater treatment problems in the help, PAC manufacturers to provide you with a full range of analysis programs and experiments, targeted to solve your problems.