As a water-soluble polymer,
cationic polyacrylamide is a water treatment chemical with excellent flocculation properties. It is insoluble in most organic solvents. Analysed by ionic characteristics, polyacrylamide can be categorised as cationic, anionic, non-ionic, or amphoteric. Among these, cationic products demonstrate particularly pronounced efficacy in water treatment processes, delivering superior treatment outcomes. What, then, are the defining characteristics of cationic products?
Cationic polyacrylamide exhibits excellent decolourisation capabilities. It demonstrates outstanding performance in decolourising wastewater from printing and dyeing plants. It is also suitable for treating industrial effluents from textiles, printing, dyeing, and ink manufacturing. Decolourisation rates can exceed 95%, while chemical oxygen demand (COD) removal ranges between 40-70%. It should be noted that cationic products appear as white powders or granules. While soluble in water, they dissolve slowly. When used as flocculants, dosage requirements are relatively low, typically 1-2 grams per tonne of wastewater. Solid formulations must be dissolved prior to use. During dissolution, add water to the dissolution tank. Subsequently, activate the mixer for agitation. When a vortex forms in the water, slowly and evenly dispense the product along the vortex. Avoid adding excessive quantities at once, as this may cause clumping and hinder dissolution. The dissolved product should be utilised promptly to prevent hydrolysis.
When employing cationic polyacrylamide, a thorough understanding of its properties is essential for effective application. When employing it, the application scenario must be clearly defined. At low molecular weight, it functions as a thickener or stabiliser. At high molecular weight, it serves as a crucial flocculant. It exhibits adhesive properties towards solid surfaces and dissolved substances, enabling the formation of insoluble gels. Its applications span flocculation, thickening, drag reduction, gelation, bonding, and scale inhibition. Different manufacturers require distinct application scenarios and purposes. Consequently, selecting the appropriate grade is essential. Each grade delivers varying performance outcomes across different sectors. As a cationic polyacrylamide manufacturer, comprehensive knowledge of all product grades' characteristics is imperative. For end-users, choosing the correct grade at the appropriate time is vital to harness the full advantages of cationic products.
