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Product Details:
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| Product Name: | Cationic Polyacrylamide Used In Paper Mill Sludge Dewatering | Usage: | Sludge Dewatering |
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| Cas No.: | 9003-05-8 | Type: | Cationic Polyacrylamide |
| Appearance: | White Powder Or Granular | Solid Content: | ≥ 90% |
| Molecular Weight: | 8-12 Million | Package: | 25kg/bag |
| High Light: | paper mill cationic polyacrylamide flocculant,sludge dewatering cationic polyacrylamide flocculant,paper mill sludge dewatering polyacrylamide flocculant |
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Cationic Polyacrylamide Used In Paper Mill Sludge Dewatering
Cationic polyacrylamide (CPAM for short) has strong flocculation and sedimentation performance for various suspended particles in aqueous media, especially for those colloidal solution particles with negative charges.
The cationic degree is the charge density carried by the CPAM molecular chain. The degree of cation is one of the determinants of the flocculation effect. The ions are too low and the flocs are small or ineffective. If the ions are too high, the sludge flocs will be repelled by the excess charge. Therefore, for the sludge to be dewatered, flocculants with different ionic degrees can be screened out through small experiments, and the most suitable polyacrylamide can be selected, so as to obtain a good flocculation effect, and at the same time minimize the dosage of chemicals. .cost. The key to choosing an ionic degree is to look at:
(1) Size of flocs: Too small flocs will affect the drainage speed, while too large flocs will combine more water and reduce the degree of mud cake. The size of the floes can be adjusted by choosing the molecular weight of the polyacrylamide.
(2) floc strength (water content): flocs should remain stable without breaking under shearing action. Increasing the molecular weight of polyacrylamide or selecting a suitable molecular structure can help improve the stability of the floc.
The excellent flocculation and sedimentation performance of CPAM includes the following three aspects:
| 1 | Negatively charged suspended particles lose their dispersion stability through electric neutralization. |
| 2 | Through the "bridging" effect, the suspended particles are aggregated into large particles to accelerate their sedimentation, and the aggregates formed are more compact and firmer than those formed by inorganic flocculants, which is conducive to mechanical dehydration. |
| 3 | Reacts with negatively charged dissolved matter to form insoluble matter precipitation. |
| Usage | Sludge dewatering |
| CAS No. | 9003-05-8 |
| Other names | CPAM |
| MF | (C3H5NO)n |
| EINECS No. | 231-545-4 |
| Water insoluble matter | ≤0.5% |
| Residual unit | ≤0.05% |
| Cationic degree | 10-65% |
| Dissolution time | ≤60 minutes |
Precautions for the use of cationic polyacrylamide
| Size of flocs |
| Too small flocs will affect the drainage speed, while too large flocs will bind more water and reduce the degree of mud cake. The size of the flocs can be adjusted by selecting the molecular weight of the polyacrylamide. |
| Sludge characteristics |
| First of all, it is necessary to understand the source, characteristics, composition and specific gravity of sludge. According to the different properties, sludge can be divided into organic sludge and inorganic sludge. Cationic polyacrylamide is used for organic sludge treatment, while anionic polyacrylamide flocculants are used for inorganic sludge. Anionic polyacrylamide should be used when the alkalinity is strong, and anionic polyacrylamide should not be used when the acidity is strong. When the sludge is high, the amount of polyacrylamide is usually larger. |
| Floc strength |
| The floc should be stable and not broken under shearing action. Increasing the molecular weight of polyacrylamide or choosing a suitable molecular structure can help improve the stability of the floc. |
| Ionic degree of polyacrylamide |
| For dewatered sludge, flocculants with different ionic degrees can be used, and the most suitable polyacrylamide can be selected through small tests to obtain the best flocculation effect. It also minimizes dosing and saves costs. |
| Dissolution of polyacrylamide |
| Only when the solution is well dissolved can the flocculation effect be fully exerted. Sometimes it is necessary to speed up the dissolution rate, in which case the concentration of the polyacrylamide solution can be reduced. |
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