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Spray polyaluminum chloride

Views: Times Updated:20-01-03

Product details:

An emerging water purification material, inorganic polymer coagulant, abbreviated as polyaluminum, abbreviated as PAC (poly aluminum chloride), it is a water-soluble inorganic polymer between AlCI3 and Al (OH) 3. Polymer, the general chemical formula is [Al2 (OH) nCl6-nLm], where m represents the degree of polymerization and n represents the degree of neutrality of the PAC product. Among the m products, n = 1-5 is a highly-charged polymeric ring chain with a Keggin structure, which has a high degree of electrical neutralization and bridging of colloids and particles in water, and can effectively remove micro-toxic substances and heavy metal ions. . The test method can be tested according to the international GB 15892-2003 standard. Due to the bridging effect of hydroxide ions and the polymerization of polyvalent anions, the produced polyaluminum chloride is an inorganic polymer water treatment agent with relatively large molecular weight and high charge.

Physical and chemical properties
Polyaluminum chloride has properties such as adsorption, coagulation, and precipitation. It has poor stability and is corrosive. If it is accidentally splashed on the skin, it should be washed away immediately with water. Production personnel should wear work clothes, masks, gloves, and long rubber boots. Polyaluminum chloride has the advantages of good spray drying stability, wide water adaptability, fast hydrolysis speed, strong adsorption capacity, large alum flower formation, fast dense precipitation, low turbidity of effluent, and good dehydration performance. Spray drying products can ensure safety, reduce water accidents, and are very safe and reliable for residents' drinking water. Therefore, polyaluminum chloride is also referred to as high-efficiency polyaluminum chloride, high-efficiency PAC or high-efficiency spray-drying polyaluminum chloride. Polyaluminum chloride is suitable for raw water of various turbidities and has a wide range of pH, but compared with polyacrylamide, its sedimentation effect is far inferior to polyacrylamide.
The salinity of polyaluminum chloride is a relatively important indicator in polyaluminum, especially for drinking-grade polyaluminum products. The lower the salinity, the higher the price, and each buyer can operate according to the actual situation of the manufacturer. In addition, the salinity of polyaluminum chloride products produced and processed by different raw materials and processes is also different, which requires manufacturers to adjust. Increasing the salinity of polyaluminum chloride products can greatly improve the economic benefits of production and use. The salinity increased from 65% to 92%, the cost of production raw materials can be reduced by 20%, and the cost of use can be reduced by 40%.

The raw materials of yellow polyaluminum chloride are calcium aluminate powder, hydrochloric acid, and bauxite, which are mainly used in sewage treatment and drinking water treatment. The raw materials for drinking water treatment are aluminum hydroxide powder, hydrochloric acid, and a little aluminum. The calcium acid powder adopts a plate and frame filter press process or a spray drying process. For the treatment of drinking water, the country has strict requirements on heavy metals, so both raw materials and production processes are better than tanned polyaluminum chloride. Yellow polyaluminum chloride is generally produced by drum drying or spray tower drying. There are two solid forms of flake and powder.

PAC polyaluminum chloride has the advantages of good spray-drying stability, wide water adaptability, fast hydrolysis speed, strong adsorption capacity, large alum flower formation, fast dense precipitation, low turbidity of effluent, and good dehydration performance. In the same water quality situation The dosage of spray-dried polyaluminum chloride is reduced, especially in the case of poor water quality. Compared with the 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 What is more important is to reduce the cost of water production by users. In addition, spray drying products can ensure safety, reduce water accidents, and are very safe and reliable for residents' drinking water.
Polyaluminum chloride, referred to as high efficiency polyaluminum chloride, or high efficiency PAC. It adopts the most advanced production technology and uses high-quality high-quality raw materials to react and polymerize. Production is performed in accordance with the national standard GB15892-2009. Polyaluminum chloride is processed by spray drying process. Therefore, it can also be called high-efficiency spray-drying polyaluminum chloride.

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