Anionic APAM: Negatively charged, high degree of hydrolysis, suitable for alkaline/neutral water; mineral processing, sand washing, wastewater sedimentation, oilfield exploitation
Cationic CPAM: Positively charged, adjustable ionic degree; sludge dewatering, organic wastewater treatment
Nonionic NPAM: Uncharged, acid and high salt resistant; paper retention aid, acidic mine wastewater
Amphoteric AmPAM: With both positive and negative charges, widely applicable to complex high-salinity wastewater