Polyaluminum chloride (PAC) is an inorganic polymer coagulant. The product has strong bridging and adsorption properties. During the hydrolysis process, physical and chemical processes such as coagulation, adsorption and precipitation will occur.
| No. | ITEM | UNIT | STANDARD | RESULT |
| 1 | Appearance | -- | Yellow powder | Yellow powder |
| 2 | Al2O3 | % | ≥27.0 | 28.1 |
| 3 | Basicity | % | 45.0-90.0 | 83.5 |
| 4 | pH value
(10g/L aqueous solution) |
-- | 3.5-5.0 | 4.09 |
| 5 | Mass fraction of insoluble matter | % | ≤0.1 | 0.09 |
| 6 | As | % | ≤0.0001 | 0.00008 |
| 7 | Pb | % | ≤0.0005 | 0.00004 |
| 8 | Cd | % | ≤0.0001 | 0.000006 |
| 9 | Hg | % | ≤0.00001 | 0.000009 |
| 10 | Cr | % | ≤0.0005 | 0.00038 |
| 11 | Fe | % | ≤0.2 | 0.056 |
The colors of polyaluminum chloride are generally white, yellow, and brown, and the application and production technology of polyaluminum chloride of different colors are also quite different. Polyaluminum chloride with an alumina content between 27% and 30% within the scope of national standards is mostly khaki, to yellow, or light yellow solid powder. These types of polyaluminum chloride have better water solubility. During the dissolution process, accompanied by physical and chemical changes such as electrochemistry, coagulation, adsorption and precipitation, the flocs form fast and coarse, have high activity, fast precipitation, and are resistant to high turbidity water. The purification effect is obvious.
PAC polyaluminum chloride has the advantages of good spray drying stability, wide water area, fast hydrolysis speed, strong adsorption capacity, large alum flower formation, fast sedimentation, low turbidity of effluent, and good dehydration performance. The amount of spray-dried polyaluminium chloride is reduced, especially in the case of poor water quality. Compared with drum-dried polyaluminum chloride, the dosage of spray-dried products can be reduced by half, which not only reduces the labor intensity of workers, but also What is more important is to reduce the cost of water production for users. In addition, the use of spray drying products can ensure safety, reduce water accidents, and is very safe and reliable for residents' drinking water.
| Packaging and Precautions for Polyaluminum Chloride |
| ⒈Plastic woven bags for external use, with a plastic film set inside, each bag has a net weight of 25kg, and can be modified according to user requirements, and liquid polyaluminum chloride is also sold. |
| 2. This product is prohibited from being mixed with toxic substances, transported and stored. The product should be stored in a dry, ventilated and cool place indoors and kept away from moisture. |
| 3. Handle with care when loading and unloading. The storage period of solid products is one year. |
