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Structure characteristics of cationic polyacrylamide and its application in water treatment

2023-07-21 14:56:46


Cationic polyacrylamide is an important polymer that plays an important role in the field of water treatment. It is polymerized from acrylamide monomer, which has cationic groups, giving it good flocculation and sedimentation properties. The following will introduce the structure characteristics of cationic polyacrylamide and its application in water treatment.

The molecular structure of cationic polyacrylamide contains positive charge groups, which makes it have good cationic properties. This allows cationic polyacrylamide to combine with negatively charged suspended particles in water and quickly form larger aggregates, effectively promoting the flocculation and sedimentation of suspended solids. In sewage treatment, CPAM is widely used as a flocculant, which can rapidly condense small particles suspended in sewage to form larger sediments, which is convenient for subsequent solid-liquid separation treatment.

In addition, cationic polyacrylamide can also be used as a settler to help accelerate the sedimentation rate of suspended particles in water. In the sedimentation tank of sewage treatment plant, adding appropriate amount of cationic polyacrylamide can promote the rapid settlement of solid particles, reduce the treatment time and improve the treatment efficiency. This not only reduces processing costs, but also saves resources.

The application of cationic polyacrylamide in water treatment is not limited to flocculation and sedimentation, it is also widely used to improve the dewatering performance of sludge. The sludge produced during the treatment process usually contains higher moisture and is difficult to handle and dispose of. By adding cationic polyacrylamide, the particle structure in the sludge is improved and the moisture content is reduced, thus facilitating subsequent dehydration and curing treatment, reducing the volume of the sludge and facilitating subsequent treatment and disposal.

Overall, cationic polyacrylamide plays an important role in water treatment. In the future, with the continuous progress of science and technology, the application prospect of cationic polyacrylamide will be broader and make greater contributions to the protection and sustainable development of water resources.


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