
Usage and dosage of industrial-grade polyaluminum chloride:
After dissolving the solid product into a liquid with water at a ratio of 1:3, add 10-30 times water to dilute it to the desired concentration before use. The PH value of the dosage is 3.5-5.0, and the PH value can be added to give full play to the good benefits of coagulation. The dosage can be determined according to the different turbidity of the raw water, and the dosage is 10-20kg per 1,000 tons when the turbidity of the raw water is 100-500mg/L. When the turbidity of the raw water is high, the dosage can be appropriately increased, and when the turbidity is low, the dosage can be appropriately reduced. Industrial-grade polyaluminum chloride is an inorganic polymer coagulant, also known as polyaluminum chloride, polyaluminum, abbreviated as PAC in English, due to the cross-linking of hydroxide ions and the polymerization of polyvalent anions, the inorganic polymer water treatment agent with large molecular weight and high charge. In terms of form, it can be divided into two types: solid and liquid, and the color of solid industrial grade PAC is usually tan or yellow, and there are certain differences in the application and production technology of different colors of polyaluminum chloride.
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Industrial grade polyaluminum chloride |
Technical indicators |
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liquid |
solid |
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Alumina content AL2O3 |
8% |
22-28% |
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Salt base |
40-90% |
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PH (1% concentration aqueous solution) |
3.5-5.0 |
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Water is insoluble |
≤0.2% |
≤0.6% |
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Arsenic As |
≤0.0002% |
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Lead Pb |
≤0.001% |
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Cadmium Cd |
≤0.0002% |
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Mercury Hg |
≤0.00001% |
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Hexavalent chromium Cr+6 |
≤0.0005% |
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