White polyaluminum chloride is a new and efficient inorganic polymer flocculant, also known as high-purity iron free white polyaluminum chloride or food grade white polyaluminum chloride. Commonly used in fields that require high water quality, such as drinking water treatment, papermaking sizing, sugar decolorization and clarification.
White polyaluminum chloride is a new and efficient inorganic polymer flocculant, also known as high-purity iron free white polyaluminum chloride or food grade white polyaluminum chloride. It is made of aluminum hydroxide powder and high-purity hydrochloric acid by spray drying process. Compared with polyaluminum chloride of other colors, it has higher aluminum oxide content, lower salinity, and few water insoluble substances. Commonly used in fields that require high water quality, such as drinking water treatment, papermaking sizing, sugar decolorization and clarification.
1. Compressed double layer: Colloidal particles in water have a surface charge, forming a double layer. The high valence cations such as aluminum ions generated after the dissolution of white polyaluminum chloride can compress the double layer of colloidal particles, reducing the electrostatic repulsion between particles and promoting their proximity and aggregation.
2. Adsorption electro neutralization: The multi nuclear hydroxyl complex produced by hydrolysis can adsorb the surface charge of colloidal particles, neutralize their electrical properties, and cause the colloidal particles to lose stability, leading to aggregation.
3. Adsorption bridging: Long chain polyaluminum chloride molecules can simultaneously adsorb multiple colloidal particles, forming bridges between them to connect them into larger flocs.
4. Net capture and sweeping: When the dosage is large, the hydrolyzed aluminum hydroxide precipitate will capture small particles in the water like a net, accelerating the sedimentation of particles.
| Standard | GB/15892-2013 | Note: The listed As, Pb, Cd, Hg, Cr ⁶⁺ in the liquid products in the table do not include The solubility index is calculated based on （Al₂O₃） 10%, with （Al₂O₃） content When ≥ 10.0%, it should be converted to （Al₂O₃） 10.0% based on the actual content Calculate various impurity indicators for product ratio. | ||
| Index | Liquid | Solid | ||
| Alumina（Al₂O₃）The quality score%≥ | 10.0 | 29.0 | ||
| Basicity（%） | 40.0-90.0 | |||
| Density（20℃）/（g/cm³） | 1.12 | |||
| Mass fraction of insoluble substances%≤ | 0.2 | 0.6 | ||
| pH value（10g/L水溶液） | 3.5-5.0 | |||
| Arsenic（As）The quality score%≤ | 0.0002 | |||
| Cadmium（Cd）The quality score%≤ | 0.001 | |||
| Lead（Pb）The quality score%≤ | 0.0002 | |||
| Mercury（Hg）The quality score%≤ | 0.00001 | |||
| Hexavalent chromium（Cr⁶⁺）The quality score%≤ | 0.0005 | |||
1. High purity: The alumina content is usually above 30% and almost free of impurities such as iron ions. The product has high purity and does not introduce additional pollutants.
2. Excellent solubility: It can quickly dissolve in water, forming a clear and transparent solution with fast dissolution rate and easy use.
3. Good flocculation effect: It can quickly adsorb colloidal particles and impurities in water, forming large and compact flocs with fast settling speed, and has a good removal effect on turbidity, color, and microorganisms.
4. Widely applicable pH range: It can maintain good flocculation performance in a wide pH range (5-9) and has strong adaptability.
5. Low corrosiveness: It has less corrosiveness to equipment and can reduce maintenance costs and replacement frequency.
6. High safety: Due to its high purity and low impurities, it meets food grade standards and can be used for water treatment in the drinking water and food industries.
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