Polyacrylamide commonly used are cationic polyacrylamide and anionic polyacrylamide. Polyacrylamide is mostly a solid product that needs to be dissolved in water to prepare a polyacrylamide aqueous solution with a concentration between 0.1% and 0.5% for use.
Usually, when using polyacrylamide in practice, both anionic polyacrylamide and cationic polyacrylamide can be used simultaneously. Can cationic polyacrylamide and anionic polyacrylamide be dissolved and added simultaneously?
Firstly, it should be noted that cationic polyacrylamide and anionic polyacrylamide cannot be mixed together for dissolution and use.
Due to the particularity of polyacrylamide itself, a mixture of cationic polyacrylamide and anionic polyacrylamide will coagulate with each other to form a coagulation precipitate, which will greatly affect the dissolution efficiency and coagulation effect of polyacrylamide.
Polyacrylamide aqueous solution generally has high viscosity, so when preparing polyacrylamide aqueous solution, some viscous colloidal substances may remain in the tank or dissolution tank, making it difficult to dissolve and clean. After dissolving cationic polyacrylamide, adding anionic polyacrylamide without cleaning the remaining material will have a certain impact, so a better method is to separate cationic polyacrylamide from anionic polyacrylamide.
When using polyacrylamide, regardless of which type of polyacrylamide is added first, it is necessary to ensure complete reaction before adding other types of polyacrylamide to ensure the flocculation effect of polyacrylamide. Polyacrylamide cannot be mixed, dissolved, and added at the same time.
