Polyacrylamide-based flocculants for conditioning a variety of municipal and industrial substrates prior to mechanical or static solid/liquid separation. Highly effective across mechanical dewatering and thickening,
flotation, and clarification:
1, Available in different molecular weights
2, Linear or crosslinked structure
3, Exhibit varying degrees of cationic charge
4, Supplied as micro bead, free flowing powder, as well as low viscous free flowing liquid in inverse
emulsion form
Basic principles of flocculation
After colloidal suspensions have been destabilized by coagulants, flocculant polymers are frequently used to enhance the performance of clarification processes.
Destabilized particles
The variety of origins of the destabilized particles depend largely on the source of the water being treated.
The flocculants charge (+ or -) will be selected according to the particles themselves. In general the following is true:
More or less anionic for mineral particles
More or less cationic for organic particles
Flocculation mechanism
Because of their very high molecular weights (very long chain of monomers), and of their ionic charge, flocculants will bridge destabilized particles together. This results in the formation of large particles suspended in water. This formation of flocs is called flocculation.
The forces involved in this bridging between particle and polymer are mainly ionic and hydrogen bonding.
Anionic PAM flocculants details:
Cationic PAM flocculant details:
Features:
| Specifications: |
Index: |
| Appearance: |
Off-White Granular Powder |
| Ionic Charge: |
Anionic/ Cationic/ Nonionic |
| Particle Size: |
20-100 mesh |
| Molecular Weight: |
5-22 million |
| Anionic Degree: |
5%-60% |
| Solid Content: |
89% Minimum |
| Bulk Density: |
About 0.8 |
| Specific Gravity at 25°C: |
1.01-1.1 |
| Recommended Working Concentration: |
0.1-0.5% |
| PH Value: |
4-9 |
| Storage Temperature (°C): |
0 - 35 |
PAM Solution make up:
Solution should be made up at 0.1-0.3% solid. Make-up water temerature should be between 10
oC to 40
oC for optimum product performance. Following dispersion into agitated water, stirring should be continue for about an hour. The liquid polyacrylamide are stable for one week.
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