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Basic aluminum chloride
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Basic aluminum chloride
Product Introduction
Product Description
Product Introduction
Industrial-grade polyaluminum chloride is usually also called water purifier or coagulant. It is a water-soluble inorganic polymer between ALCL3 and AL(OH)3. It has the characteristics of large molecular structure, strong adsorption capacity, low dosage, low processing cost, good solubility, high activity, large alum blooms in the water body, and rapid sedimentation.
The color of the product is yellow or light yellow, dark brown, dark gray resin-like solid, with strong bridging adsorption performance. During the hydrolysis process, physical and chemical processes such as agglomeration, adsorption and precipitation are accompanied by physical and chemical processes. The fundamental difference from traditional inorganic coagulants is that traditional inorganic coagulants are low-molecular crystalline salts, while the structure of polyaluminum chloride is composed of multi-element carboxyl complexes with variable forms, which has fast flocculation and precipitation speed and a wide range of applicable pH values. , It is non-corrosive to pipeline equipment and has obvious water purification effect. It can effectively remove the color quality SS, COD, BOD and heavy metal ions such as arsenic and mercury in the water. This product is widely used in the field of industrial water and sewage treatment.
Industrial-grade polyaluminum chloride used as a water purifier has the following characteristics:
1. Polyaluminum chloride has large molecular structure, strong adsorption capacity, low dosage and low processing cost.
2. It has good solubility and high activity. The alum flowers formed by agglomeration in the water body are large, and the
sedimentation is fast. The purification capacity is 2-3 times larger than other inorganic flocculants.
3. Strong adaptability, little affected by the pH value and temperature of the water body, source water in the range of PH5.0-9.0 can be condensed. After purification, the raw water reaches the national water standard, and the treated water has low content of cations and anions, which is conducive to ion exchange treatment and the preparation of high-purity water.
4. Low corrosiveness and easy operation, which can improve the labor intensity and working conditions of the dosing process.
5. The purified water quality is better than aluminum sulfate flocculant, and the water purification cost is 15-30% lower than that.
6. The alkalinity in the consumed water is lower than that of various inorganic flocculants, so no or less alkalis can be used.
7. The solubility is better than aluminum sulfate.
8. There is little increase in salt in the treated water, which is conducive to ion exchange treatment and high-purity water production.
Product Usage
This product is widely used in the purification of low temperature and high turbidity water for production and life, and the purification of industrial water supply, wastewater and sewage. It is suitable for the removal of colloidal suspended solids SS in wastewater, COD,BOD, decolorization purification, and chemical additive industries in papermaking, thermal power, chemical, pharmaceutical, mining, food, steel, mineral processing, tanning and other industries.
Usage and dosage
1. The solid product and normal temperature water by 1: 2.5-1: 3 (weight ratio) mixed for about 30 minutes, the drug is completely dissolved, add 30-40 times the water diluted to the required concentration after use (source water turbidity The greater the secondary dilution plus the more water).
2. Source water turbidity in the 100-500mg / L, the dosage for the amount of water per kilowatt of 5-10Kg. It is advisable to make a small test based on the water quality characteristics before use to determine the optimal dosage.
3. The best effect of poly aluminum chloride PH value of 7-9. Water temperature is too low affect the product flocculation effect.
Packaging and storage
1.using lined with polyethylene film, jacket polypropylene plastic woven bag double packing, 25kg / bag.
2.stored in a cool dry and ventilated place, the solid shelf life of 12 months.
Index parameter
Index name \Product rating | Water treatment(GB/T22627-2008) | ||
Liquid | Liquid | ||
| Alumina (AL2O3)content | % | ≥8 | ≥28 |
| Basicity of salt | % | 45-98 | 45-98 |
| Denseness(Temperature 20 ℃) | g/cm3 | 1.12 | -- |
| Water insoluble content | % | ≤0.5 | ≤1.5 |
| PH (1% solution) | 3.5-5.0 | 3.5-5.0 | |
| Mass fraction of iron | % | ≤2.0 | ≤5.0 |
| Mass fraction of arsenic | % | ≤0.0005 | ≤0.0015 |
| Mass fraction of lead | % | ≤0.002 | ≤0.006 |
| The mass fraction of cadmium | % | -- | -- |
| Mass fraction of mercury | % | -- | -- |
| Mass fraction of chromium | % | -- | -- |
Working Principle
Basic aluminum chloride is a high-priced inorganic polymer electrolyte coagulant, which can be regarded as an intermediate hydrolysis product between aluminum chloride and aluminum hydroxide. The product is black. It is used to purify industrial wastewater, mines, papermaking, metallurgy, coal washing, leather and various chemical wastewater treatment.
Specification
Product Features
1. It has unique performance in treating papermaking and printing and dyeing wastewater.
2. It has fast flocculation and precipitation, and can increase production capacity by 1.5-3 times under corresponding conditions.
3. Under the same dosage, the hardness of water consumed during coagulation is less than that of various inorganic coagulants, and the pH value of treated water is also reduced less.
4. When treating high-concentration water, alkaline additives and organic coagulants can be added without or with less addition.
5. Its decolorization ability is better than other inorganic water purifiers.
Product Parameters
| Parameter | Index Value |
|---|---|
| Molecular Formula | Al₂(OH)₅Cl·2H₂O |
| Molecular Weight | 210.48 g/mol |
| Aluminium Oxide (Al₂O₃) Content (Liquid) | ≥ 23% |
| Aluminium Oxide (Al₂O₃) Content (Solid) | 46% - 50% |
| Density (Liquid, 20℃) | 1.30 - 1.38 g/ml |
| Water-Insoluble Matter (Liquid) | ≤ 0.1% |
| Water-Insoluble Matter (Solid) | ≤ 0.01% |
| Basicity | 82% - 85% |
| Chloride Ion (Cl⁻) Content (Liquid) | < 9.0% |
| Chloride Ion (Cl⁻) Content (Solid) | < 18.0% |
| Aluminum-Chlorine Atomic Ratio (Al:Cl) | 1.90:1 - 2.10:1 |
| Iron Ion (Fe) Content (Liquid) | ≤ 100 ppm |
| Iron Ion (Fe) Content (Solid) | ≤ 200 ppm |
| Sulfate Ion (SO₄²⁻) Content (Liquid) | ≤ 250 ppm |
| Sulfate Ion (SO₄²⁻) Content (Solid) | ≤ 500 ppm |
| Hexavalent Chromium (Cr⁶⁺) Content (Liquid) | ≤ 1.0 ppm |
| Hexavalent Chromium (Cr⁶⁺) Content (Solid) | ≤ 2.0 ppm |
| Arsenic (As) Content (Liquid) | ≤ 2.0 ppm |
| Arsenic (As) Content (Solid) | ≤ 4.0 ppm |
| Heavy Metal (As, Pb) Content (Liquid) | ≤ 10.0 ppm |
| Heavy Metal (As, Pb) Content (Solid) | ≤ 10.0 ppm |
| Nickel (Ni) Content (Liquid) | ≤ 1.0 ppm |
| Nickel (Ni) Content (Solid) | ≤ 2.0 ppm |
| Cadmium (Cd) Content (Liquid) | ≤ 1.0 ppm |
| Cadmium (Cd) Content (Solid) | ≤ 2.0 ppm |
| Mercury (Hg) Content (Liquid) | ≤ 0.1 ppm |
| Mercury (Hg) Content (Solid) | ≤ 0.2 ppm |
| pH Value (15% Aqueous Solution, Liquid) | 3.0 - 5.0 |
| pH Value (15% Aqueous Solution, Solid) | 4.0 - 4.4 |
Application
Municipal Sewage
Paper Mills
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