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Application of cationic polyacrylamide in pharmaceutical wastewater treatment Time:2021-07-05 09:39

Polyacrylamide, as a new polymer flocculant, is widely used in various industries. According to its structure, it can be divided into cationic polyacrylamide, anionic polyacrylamide and non-ionic polyacrylamide. Let's discuss the application of cationic polyacrylamide in wastewater treatment of pharmaceutical industry.


According to a large number of practices, cationic polyacrylamide can well precipitate impurities in pharmaceutical wastewater treatment. The wastewater in pharmaceutical industry generally comes from the wastewater produced in pharmaceutical production, machine maintenance Washing Wastewater and part of domestic wastewater. The wastewater in pharmaceutical production is divided into biological pharmaceutical wastewater and chemical pharmaceutical wastewater. This kind of wastewater contains a lot of organic matter, high COD value, salt and pH value, and some toxic and refractory substances. This kind of wastewater treatment often needs to carry on the subsection process treatment, in each stage of treatment, most will add the corresponding cationic polyacrylamide, used as coagulant and precipitant, in order to achieve the effect of rapid precipitation after reaction.


Cationic polyacrylamide has many active groups, and has the functions of turbidity removal, decolorization and adsorption. It has obvious effect on the treatment of wastewater containing more organic matter. It is mostly used in food, fermentation and other industries, and in the treatment of urban sewage and sludge.