Polyacrylamide, as a new polymer flocculant, is widely used in various industries. It is divided into cationic polyacrylamide, anionic polyacrylamide and nonionic polyacrylamide according to the structure. We will discuss the wastewater treatment of cationic polyacrylamide in pharmaceutical industry.

According to a large number of practices, cationic polyacrylamine in pharmaceutical industry wastewater treatment can be very good to precipitate impurities in wastewater. The wastewater in pharmaceutical industry generally comes from the wastewater produced in pharmaceutical production, machine repair and washing wastewater and part of domestic sewage. Among them, the wastewater in pharmaceutical production is divided into biological pharmaceutical wastewater and chemical pharmaceutical wastewater. Such wastewater contains a large number of organic substances, high COD value, large change of salt and pH value, and some toxic and refractory substances. This kind of wastewater treatment often needs to be treated by the process of segmentation. In the treatment of each stage, most of them will add the corresponding cationic polyacrylamide, which can be used as coagulant and precipitant to achieve the effect of rapid precipitation after reaction.

Cationic polyacrylamide has many active groups, such as turbidity removal, decolorization and adsorption, and has obvious effect on wastewater treatment with more organic content. It is mainly used in food, fermentation and other industries, and in the treatment of urban sewage and municipal sludge.