Chemical mechanism characteristics of polyacrylami

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Chemical mechanism characteristics of water treatment agent polyacrylamide is an efficient water treatment flocculant. It is widely used in the field of water treatment agents. The product properties and characteristics of polyacrylamide determine that it is widely used in many application fields, which is both an opportunity and a challenge for polyacrylamide production enterprises. According to the research, the main driving force for the development of the global polyacrylamide market comes from the recovery of various downstream industries, the profit space brought by product related technical services, and the rapid growth of emerging markets. Of course, the global polyacrylamide market also faces many challenges. In order to survive in the fierce market competition for a long time and even take the lead, the formation of cost advantage is a key factor. This requires that while ensuring product quality, we must try our best to reduce costs. For South America, China and South Korea, due to low labor costs and broad consumption potential, it is imperative to speed up the establishment of factories in these regions. At the same time, because the technical services related to products have a large profit space, we should appropriately strengthen the investment and development in technological innovation. In addition, mergers or joint ventures through mergers and acquisitions are also a measure to enhance competitiveness

polyacrylamide is a polymer compound with relatively active chemical properties. Due to the activity of acylamines on the side chains of molecules, polymers have obtained many valuable properties. Compared with anionic PAM flocculants, non-ionic PAM flocculants have the following characteristics because they do not have ionic functional groups: the flocculation performance is less affected by the fluctuation of water pH value and salts; Under medium or alkaline conditions, its flocculation effect (sedimentation rate) is not as good as that of anionic type, but it is better than that of anionic type under acidic conditions. The floc strength is stronger than that of anionic polymer flocculant. The molecular weight of anionic PAM flocculants is usually lower than that of anionic or non-ionic polymers, and their clarification performance is mainly obtained through charge neutralization. The function of this kind of flocculant is mainly to flocculate negatively charged colloids. It is easy to have problems after using domestic instruments for a period of time. It has the functions of turbidity removal, decolorization and so on. It is suitable for water treatment with high content of organic colloids

polyacrylamide solution should not be stored, nor should it be in contact with ironware, and the dissolution water temperature should not exceed. Otherwise, the molecular chain of polyacrylamide will be broken and the coagulation aid effect will be lost, resulting in the adverse consequences of increasing the content of acrylamide monomer in the purified water. The effect of coagulation aid can be improved by hydrolyzing polyacrylamide (alkalization does not require starting the oil pump to deliver oil). Hydrolysis time should be about,. In actual production, it is often used in an emergency, and there is no sufficient hydrolysis time. The purpose of better hydrolysis can be achieved by increasing the hydrolysis ratio. The hydrolysate prepared and used now is more suitable. In order to ensure that the content of acrylamide monomer in purified water does not exceed the provisions of health standards, polyacrylamide with high polymerization degree must be used as the coagulant aid for drinking water purification, and products with acrylamide monomer content less than% are required. For various raw water quality (including about overload), high-efficiency coagulant aid polyacrylamide can play a good coagulant aid sedimentation effect. For example, the design water supply capacity of the third workshop of Shiwan water plant is to use polyacrylamide as a coagulant aid. On the premise of ensuring high-quality water supply, the polyacrylamide whose water supply throughout the day exceeds the design water supply capacity is used as a water purification coagulant aid, which must be fully stirred and dissolved before it can be used. Otherwise, it cannot give full play to its due high-efficiency coagulation aid effect, and it will also cause adverse consequences such as blockage of the dosing system, sealing the surface of the filter, destroying the efficiency of the filter, and greatly shortening the backwash cycle of the filter. When dissolving, the mixing speed should be controlled around the dissolving mixing time. In low temperature seasons, the water temperature is low and difficult to dissolve. Using hot water can shorten the dissolution time, but the water temperature cannot exceed that of polyacrylamide as a water purification coagulant aid. The dosage range to obtain the best coagulant aid effect is very small. The best dosage is that beyond this range, it will not work or it is easy to have side effects. The dosage point is the key to determine the effect of polyacrylamide coagulant aid precipitation. The best dosing point is in the whole process of flocculation reaction in water purification production. Increasingly strict regulations have promoted the development of water treatment industry. The field of municipal sewage treatment has not been affected by the financial crisis, but has shown a good growth momentum. At the same time, in the municipal water supply system, more and more technical requirements require customized solutions, which also increases additional profit space for products. In addition, new municipal sewage treatment markets have emerged in North Africa, including Morocco, Tunisia, Algeria and Egypt, while other countries, such as Saudi Arabia and Qatar, are also increasing privatization investment in water treatment. In this case, there are also opportunities to sell products to Veolia, Suez and other water treatment service companies. In terms of waste water treatment, coal mining and thermal power stations provide a lot of business space. The increasing attention to reclaimed water reuse technology is also a market driving factor. In the field of water treatment, the challenges faced by polyacrylamide market mainly come from industrial wastewater treatment. Industrial wastewater treatment is often mature and self-contained, which limits the development of the market. Due to the economic recession, a large number of factories have been closed, and the wastewater treatment capacity has been greatly reduced, while many other companies only carry out minimal wastewater treatment in order to save money. In addition, the decline of oil exploitation, mining and paper industry will also affect the development of water treatment chemicals industry. There are few opportunities in technical services in industrial applications, which also dilutes the industrial profits to a certain extent. China's "Hygienic standard for the use of additives for food containers and packaging materials" (gb9685 ⑵ 008) also limits the migration of some plasticizers. (end)

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