PAM for Water Treatment
Polyacrylamide is the most widely used flocculant in municipal and industrial water treatment — from raw water clarification to sludge dewatering.
How PAM Works in Water Treatment
Polyacrylamide flocculants bridge suspended particles into larger flocs that settle rapidly. The choice between anionic, cationic, and nonionic PAM depends on the water chemistry, particle charge, and treatment objective.
Municipal Wastewater Treatment
In municipal WWTPs, cationic PAM (CPAM) is the primary choice for sludge conditioning before belt press or centrifuge dewatering. Typical dosage: 2-5 kg/ton dry solids. Our high-charge-density CPAM achieves 75-85% moisture reduction.
Industrial Effluent Treatment
For industrial wastewater (food processing, chemical, pharmaceutical), anionic PAM works as a coagulant aid after inorganic coagulants (PAC/FeCl₃). It accelerates settling from hours to minutes, reducing clarifier size by 50-70%.
Drinking Water Purification
Our food-grade PAM meets NSF/ANSI 60 certification for potable water applications. Used at ultra-low dosages (0.1-0.5 mg/L) as a flocculation aid, it removes turbidity, color, and organic matter without residual monomer concerns.
Dosage Guidelines
| Application | PAM Type | Dosage |
|---|---|---|
| Raw water clarification | Anionic 12-18M MW | 0.5-2 mg/L |
| Sludge dewatering | Cationic 40-60% CD | 2-5 kg/t DS |
| DAF treatment | Anionic 8-12M MW | 1-3 mg/L |
| Drinking water | Food grade APAM | 0.1-0.5 mg/L |
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