The equivalent of anionic polyacrylamide zetag 4139 can be replaced by Chinafloc A
zetga 4130 is a kind of anionic polyacrylamide with medium hydrolysis degree and very high molecular weight mainly used for kinds of wastewater treatment.Chinafloc A series can replace of it with good result.
Anionic polyacrylamide (APAM) is a water - soluble polymer widely used in various industries due to its excellent properties such as flocculation, thickening, and adhesion. The following are its main applications:
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Coagulation and Flocculation: In the treatment of surface water and groundwater, APAM is often used as a coagulant aid. It can adsorb on the surface of fine - grained suspended particles and colloids through its long molecular chains, bridging and aggregating these particles into larger flocs. This significantly improves the efficiency of sedimentation and filtration, helping to remove turbidity, color, and some organic substances from the water, thus improving the quality of the treated water. For example, in the treatment of river water with high turbidity, the addition of a small amount of APAM can effectively reduce the turbidity of the water and make it meet the standards for domestic and industrial water use.
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Industrial Wastewater Treatment: Many industrial wastewaters contain a large number of anionic pollutants, such as suspended solids, heavy metal ions, and organic matter. APAM can form stable flocs with these pollutants through electrostatic attraction and bridging action, facilitating their separation from the water. In the treatment of wastewater from the mining, metallurgical, and paper - making industries, APAM is widely used to remove suspended solids and reduce the content of pollutants in the wastewater, meeting the discharge standards and reducing environmental pollution.
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Enhanced Oil Recovery: In the process of enhanced oil recovery, APAM is an important additive for polymer flooding. It is injected into the oil - bearing formation together with water to increase the viscosity of the injection water and improve the sweep efficiency of the water in the formation. The long - chain molecules of APAM can adsorb on the surface of the rock and the oil - water interface, reducing the interfacial tension and improving the ability of the water to displace oil, thereby increasing the recovery rate of crude oil. Field applications have shown that the use of APAM in polymer flooding can increase oil recovery by 10% - 20%.
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Drilling Fluid Additive: APAM is also used in drilling fluids. It can improve the rheological properties of the drilling fluid, such as increasing its viscosity and yield point, and reducing its filtration loss. This helps to carry cuttings, maintain the stability of the wellbore, and protect the formation from damage. In addition, APAM can also prevent the dispersion of shale and clay minerals in the formation, improving the quality of the drilling fluid and the efficiency of drilling operations.
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Retention and Drainage Aid: In the paper - making process, APAM is used to improve the retention of fillers and fine fibers. It can adsorb on the surface of cellulose fibers and fillers through hydrogen bonding and electrostatic interaction, forming a network - like structure that traps fillers and fine fibers, reducing their loss in the papermaking process. At the same time, APAM can also accelerate the drainage of water in the pulp, improve the drying efficiency of the paper, and increase the production speed of the paper machine.
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Paper Strength Agent: APAM can also be used as a paper strength agent. It can penetrate into the fiber network of the paper, enhance the hydrogen bonding and intermolecular forces between the fibers, and improve the tensile strength, tear strength, and folding resistance of the paper. This is of great significance for the production of high - strength papers such as packaging paper, printing paper, and tissue paper.
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Flotation Separation: In mineral processing, APAM is used as a flotation aid. It can selectively adsorb on the surface of certain minerals, changing the surface properties of the minerals and improving their floatability. For example, in the flotation of iron ore, APAM can adsorb on the surface of hematite and goethite, enhancing their hydrophobicity and improving the separation effect of iron minerals from gangue minerals.
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Tailings Dewatering: APAM is widely used in the dewatering of tailings in mineral processing plants. It can flocculate fine - grained tailings particles, form large flocs, and improve the efficiency of sedimentation and filtration. This helps to reduce the water content of tailings, facilitating their disposal and reducing environmental pollution. At the same time, the dewatered tailings can also be reused in some ways, such as in the construction of roads and the filling of mines.
In addition to the above - mentioned applications, anionic polyacrylamide also has applications in other fields such as textile printing and dyeing, soil erosion control, and food processing. With the continuous development of science and technology, the application scope of anionic polyacrylamide will be further expanded, and it will play a more important role in promoting the development of various industries and protecting the environment.
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