Cationic polyacrylamide (CPAM) is a linear polymer compound, because it has a variety of active groups, can be affinity with many substances, adsorption to form hydrogen bonds. Mainly for flocculating negatively charged colloid, with turbidity removal, decolorization, adsorption, bonding and other functions, suitable for printing and dyeing, paper, food, alcohol, chemical, pharmaceutical and other industries, especially suitable for municipal sewage treatment plant sludge treatment, paper sludge and other industrial sludge dewatering treatment.
Polyacrylamide is usually combined with cationic polyacrylamide molecular weight, solid content, ionic degree, dissolution time and other indicators. In general, what does the ionic degree of cationic polyacrylamide represent? Ionic degree is simply the number of charges carried by polyacrylamide, according to the level of charge can be divided into low ionic degree, medium ionic degree and high ionic degree. The role of cationic polypropylene is to use its molecular charge and the opposite of the charge carried by the sludge particles, to stabilize it after the positive and negative charges are neutralized, and then to free it from the polymer chain, entangling the fine sludge together to form more particles. The double compression of the front end is absorption.
Although the ionic degree has a great impact on the use of cations, but the specific need to use which ionic degree products depend on the nature of sewage or sludge, in different cases have different choices, according to the selection experiment to determine, so the selection of polyacrylamide role and effect is very important, can not simply think that the lower the ionic degree is better or the higher the better. According to the results of the beaker experiment selection, the more models selected, the more suitable the model selected.
