Cationic PAM is currently the most widely used sewage treatment agent for municipal wastewater treatment. Its main raw material is acrylamide, DAC or DMC copolymer. After high temperature synthesis, it forms a polymerized sewage treatment agent; we usually call it cationic PAM. Also called cpam.

   The problem of the charge value of cationic PAM is often encountered in some practical applications. In the industrial treatment of some sludge compacted cakes, the general sewage ions are negatively charged, and the positive charges of the cations can attract each other and bridge quickly. Flocculation and precipitation occurred. This also determines the great effect of the cationic positive charge.

   The number of charges of cations - the number of charge densities carried by cationic PAMs is a relative concept. The higher the charge density, the higher the ionicity, which determines the price of the cation and the length of the molecular chain. Generally, the molecular weight of the medium-high ionic cation is not too long, that is, between 800 and 10 million, but the higher the ionicity, the tighter the clump formed by the sludge. In general, if the sludge treatment is to be applied to the filter press, the cations with high ionicity should be used, so that the filter cloth will not be clogged and the formed sludge will be tighter.

   In other words, municipal sewage treatment plants generally use high-cationic PAM, and it is recommended that the effect of ionization of 50 is more prominent.