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Polyacrylamide (PAM) is a synthetic high molecular polymer with a wide range of applications. Among them, amphoteric polyacrylamide is a special type of polyacrylamide that possesses both cationic and anionic properties, allowing it to interact with substances of different charges.
Amphoteric monomers are typically compounds that have both cationic quaternary ammonium salts and anionic acid groups, with structural characteristics similar to colloidal particles.
Amphoteric polyacrylamide is highly soluble in water and can form aqueous solutions of various concentrations. Its solubility is influenced by the pH value and ionic strength of the solvent, causing its properties to vary under different environmental conditions. It has micelle-forming capabilities, and when its concentration exceeds the critical micelle concentration, it will form micelle structures. This micelle-forming ability enables it to form stable colloidal systems in the liquid phase.
In solution, a lone-pair effect occurs, where two polymer chains with opposite charges attract each other. This mutual attraction helps increase the polymer's dispersibility and the viscosity of the solution. It can selectively adsorb substances with different charges. It can adsorb cations, such as metal ions and organic dyes, as well as anions, such as phosphate ions. This selectivity makes it widely applicable in environmental management and water treatment fields. It possesses excellent coagulation properties that can promote the aggregation of suspended particles in the solution to form larger agglomerates. This coagulation property makes it critically important in areas such as wastewater treatment and concrete enhancement.
Prepare the polyacrylamide powder, water, solvents, etc., according to the requirements.
Conduct pretreatment of the amphoteric polyacrylamide powder as needed, such as dispersing, dissolving, filtering, etc. Equipment such as mixers, heaters, and filters can be used for processing.
Add the treated polyacrylamide powder into water in a certain proportion and mix evenly through stirring or other methods to obtain a polyacrylamide solution.
Perform an adaptability test on the prepared amphoteric polyacrylamide solution under experimental conditions to examine its performance and effectiveness.
Apply the polyacrylamide solution, which has passed the adaptability test, into actual industrial applications. Depending on specific needs, it can be sprayed, injected, or added to the medium requiring treatment.
During industrial application, monitor the treatment process in real-time, including the parameters such as solution concentration, flow rate, temperature, etc., and make adjustments as necessary.
Treat the waste liquid, such as through neutralization, precipitation, filtration, etc., to prevent environmental pollution.
