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The Development of Cationic Polyacrylamide

Cationic polyacrylamide as flocculant has the dual function of coagulation and flocculation; it is a versatile flocculant, which can effectively reduce water turbidity, oil content and chemical oxygen demand (COD). Ke Gao Chemical Co.,Ltd. as a manufacturer of cationic polyacrylamide to remind everyone: cationic molecular flocculant especially suitable for multi wastewater containing organic colloids, such as papermaking, pulp, dyeing, food, aquatic products processing and fermentation and other industrial wastewater treatment. In addition, they also can be used as industrial waste oil demulsifier and so on. Such as the use of cationic organic polymer flocculant dyeing wastewater treatment, and inorganic flocculants, compared with less, produce less sludge, bleaching and EOD removal efficiency.
Cationic polyacrylamide (CPAM) is a water-soluble polyelectrolyte, because of its molecular chain with a quaternary nitrogen group, by changing the cationic degree is widely used in water treatment, sludge conditioning, dry paper strengthening and help the growth leaving agents regard. Cationic quaternary ammonium groups in the hydrophobic group can be effectively with water associative product, so that the water content of the total organic carbon (TOC) was reduced tendency. Preparation of cationic polyacrylamide is divided into cationic modified method polyacrylamide, acrylamide and cationic monomer to cationic method and natural score grafting method.
With the development of modern agriculture and urban living standards improve, the content of organic matter in sewage also increased significantly, while the surface of the organic colloids usually with a negative charge, non-ionic and anionic polymer flocculant although the older, although the technology of nonionic and anionic polymer flocculant is more mature, but for this type of wastewater treatment effect is not ideal, and cationic flocculants by charge neutralization and bridging adsorption destabilization of colloidal particles in suspension, flocculation and sedimentation and filtration helps to dehydration, but also with the negatively charged lysate reaction, formation of insoluble salts. It has a very good inorganic and organic purifying role, with a low, low cost, low toxicity and a wide range of PH and other characteristics, so in recent years has aroused extensive attention of scholars.
Since the 70s of the 20th century, cationic flocculants developed showing a significant growth in the United States, Japan, Britain, France and other developed countries are currently in wastewater treatment extensive use of cationic flocculant. United States, Japan and other countries accounted for synthetic cationic flocculant nearly 60% of the total, while the past few years is still more than 10% growth rate . China in the cationic flocculant research started late, there is less variety, such as lack of a single function, therefore, our country in cationic polyacrylamide and its application has great development space.