Usage Range of Amphoteric Polyacrylamide

Amphoteric Polyacrylamide is synthesized by hydrolyzing and copolymerizing acrylamide monomers of ethylene amide and vinyl cationic monomers. Infrared spectroscopy analysis reveals that the product chain contains both "carboxyl anion charges" from the hydrolysis of acrylamide and vinyl cationic charges. Thus, it forms an irregular polymer on the molecular chain with both cationic and anionic charges.

Amphoteric Polyacrylamide contains cationic and anionic groups within its molecule and is formed by hydrolyzing and copolymerizing. Its advantage is that it possesses the typical characteristics of common cationic flocculants. It can be used for strong acid leaching of ores or recovering valuable metals from metal-containing acidic catalysts.

Amphoteric type is absolutely not a mixture of anionic and cationic types

Using cationic polyacrylamide with anionic polyacrylamide can cause a reaction that produces precipitation. Amphoteric Polyacrylamide contains cationic and anionic groups within its molecule, thus it possesses the typical characteristics of common cationic flocculants.

If used together, it can cause a reaction that produces precipitation, making zwitterionic products very ideal.

Applications of Amphoteric Polyacrylamide

Used for sludge dewatering

Depending on the properties of the sludge, the corresponding model of this product can be selected. It can effectively dewater sludge before it enters the filter press, producing large flocs, not sticking to the filter cloth, remaining intact during the filter pressing, and resulting in a thicker mud cake with a high dewatering efficiency, and the water content of the mud cake being below 80%.

Used for the treatment of domestic sewage and organic wastewater

Amphoteric Polyacrylamide shows cationic properties in both neutral and alkaline media. This is very effective for flocculating and settling the suspended particles with anionic charges in the sewage, leading to clarification.

For instance, it is highly effective for wastewater from grain alcohol production, paper mills, municipal sewage treatment plants, breweries, MSG factories, sugar mills, and high organic content wastewater, feed wastewater, textile dyeing, and printing wastewater, among others. Using cationic polyacrylamide is several times more effective than using anionic, nonionic polyacrylamide, or inorganic salts due to the generally anionic charge of such wastewater.

Used as a flocculant for treating tap water sourced from rivers and streams

It requires a small dosage, has good effect, and is cost-effective. It is especially effective when used in combination with inorganic flocculants, becoming a high-efficiency flocculant for water treatment plants on the Yangtze River, Yellow River, and other regions.

Used as a strengthening agent and other additives in papermaking

It improves the retention rate of fillers, pigments, etc., and the strength of the paper.

Used as oilfield additives

Such as clay anti-swelling agents and thickening agents for oilfield acidification.

Used as a textile sizing agent

It has stable slurry performance, less slurry shedding, low breaking rate of fabric, and a smooth cloth surface.

Overall, Amphoteric Polyacrylamide is widely used in sludge dewatering fields of urban sewage treatment plants, breweries, food factories, leather factories, paper mills, petrochemical plants, oil fields, metallurgy, chemical industries, and cosmetics.