With the global attention to environmental protection, as a country with serious water shortage, China’s efforts to control water pollution are also increasing. In the 12th Five Year Plan, key construction and reconstruction of sewage treatment plants are planned. Due to the irreplaceable role of cationic polyacrylamide in municipal sewage treatment and sludge dewatering of industrial sewage treatment, domestic Cationic PAM manufacturers are also gradually increasing More and more.
PAM is used as drilling fluid additive, and drilling fluid is used as drilling mud performance regulator in oil production. The role of PAM is to adjust the rheological property of drilling fluid, carry cuttings, lubricate the bit, and facilitate drilling. In addition, it can greatly reduce sticking accidents, reduce equipment wear, and prevent lost circulation and collapse, so that the well diameter is regular. In this respect, partially hydrolyzed polyacrylamide is often used, which is obtained by hydrolysis of PAM or polyacrylonitrile.
The specific use of cationic polyacrylamide (CPAM) in acidic or alkaline media are positive, so it is very effective to flocculate and precipitate the wastewater with negative charge of suspended particles in sewage, such as alcohol factory wastewater, brewery wastewater, monosodium glutamate wastewater, sugar factory wastewater, meat food factory wastewater, beverage factory wastewater, textile printing and dyeing factory wastewater.
One of the characteristics of PAM hydrogel is that its swelling in water varies abrupt with a slight change in temperature at a critical temperature, and the volume changes can reach tens to hundreds of times. This property can be applied to the concentration of some aqueous solutions without the use of high temperature. It is valuable for the extraction of some organic or biological substances. In addition to substances that can be used to separate and maintain biological activity, PAM hydrogel can also be used for controlled release and enzyme encapsulation, protein electrophoresis, artificial organ materials, contact lenses, gel explosives, gel electrolyte of batteries, gel hydrazine used in rocket fuel, color column packing and so on.
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