Anionic polyacrylamide (APAM) is white powder with molecular weight ranging from 6 million to 25 million. It has good water solubility, can be dissolved in water in any proportion and is insoluble in organic solvents. The effective pH range is 7 to 14. It has the characteristics of a high polymer electrolyte in a neutral alkaline medium, is sensitive to salt electrolytes, and can be cross-linked with high-valent metal ions to form an insoluble gel.
Applications:
Industrial wastewater treatment: For suspended particles, high concentration, positively charged particles, neutral or alkaline pH value of water, steel plant wastewater, electroplating plant wastewater, metallurgical wastewater, coal washing wastewater and other wastewater treatment, the best effect.
Drinking water treatment: Many water plants use rivers as water sources, which are high in sediment and minerals and are turbid. Although they have been filtered through sedimentation, they still cannot meet the requirements. Flocculants need to be added. The amount of flocculants added is 1/50 of that of inorganic flocculants, but the effect is several times that of inorganic flocculants. For river water with serious organic pollution, inorganic flocculants and our company’s cationic polyacrylamide can be used together for better results. Recovery of lost starch lees from starch plants and alcohol plants: Many starch plants now have a lot of wastewater, and anionic polyacrylamide is now added to flocculate and precipitate starch particles. Then the precipitate is filtered through a filter press to become a cake, which can be used as feed. The alcohol in the alcohol plant can also be dehydrated with anionic polyacrylamide and recovered by filtration.
Basic information of polyacrylamide for ore dressing plants:
Ore dressing wastewater has the characteristics of large water volume, high suspended matter content, and contains more types of harmful substances. Its harmful substances are heavy metal ions and ore dressing agents. Heavy metal ions include copper, zinc, lead, nickel, barium, cadmium, arsenic and rare elements.
In most mineral processing processes, high molecular weight or ultra-high molecular weight flocculants are required for sedimentation and centrifugation. Polyacrylamide can provide such high molecular weight or ultra-high molecular weight flocculants to ensure good effect and benefits of sedimentation and centrifugation processes.
The series of polyacrylamide products specially used in mineral processing plants are water-soluble linear polymers synthesized with high polymerization degree. They are completely soluble in water and can dissolve quickly due to their micro-particle form. Different types of polyacrylamide have different active groups, which can flocculate different suspended particles, making them easy to filter and separate. This series of products is almost insoluble in any organic solvent and is soluble in water in large quantities. It is widely used in flocculation, thickening, bonding, scale inhibition, stabilization of colloids, drag reduction, film formation, gel and biomaterials in many industries. The product features high viscosity and can effectively treat mineral processing plant wastewater.
Selection of polyacrylamide:
Note: The use effects of products with the same parameters from different manufacturers are often very different.
In short, it is key to choose flocculants from manufacturers with good cost performance, strictly operate during use, and control costs.
