Cationic Polyacrylamide (CPAM) is a linear polymer compound. Due to its various active functional groups, it can bond with many substances through affinity and hydrogen bonding. It mainly flocculates negatively charged colloids and provides functions such as turbidity removal, decolorization, adsorption, and adhesion. CPAM is widely used in industries such as textiles, papermaking, food, construction, metallurgy, mineral processing, coal powder, oilfields, aquatic product processing, and fermentation, especially for wastewater with high organic colloid content. It is particularly suitable for the dewatering of municipal sewage, municipal sludge, papermaking sludge, and other types of industrial sludge.
Precautions for Using Cationic Polyacrylamide
Floc size: If the flocs are too small, drainage speed will be affected; if too large, they may trap excess water, reducing sludge cake dryness. The floc size can be adjusted by selecting CPAM with the appropriate molecular weight.
Sludge characteristics: First, understand the source, properties, and composition of the sludge. Sludge can generally be divided into organic and inorganic types. CPAM is suitable for treating organic sludge, while anionic PAM is suitable for inorganic sludge. For strongly alkaline sludge, cationic PAM is recommended, while for strongly acidic sludge, anionic PAM is not suitable. In general, the higher the sludge concentration, the greater the required PAM dosage.
Floc strength: Flocs should remain stable and not break under shear forces. Choosing the right molecular weight or molecular structure of PAM helps improve floc stability.
Ionic degree of PAM: Different ionic charge densities of CPAM can be tested through jar tests to determine the most suitable type. This ensures optimal flocculation results with minimal dosage, reducing treatment costs.
PAM dissolution: The product must be fully dissolved in water to achieve its best flocculation performance.
