Polyaluminum chloride is an emerging water purification material and inorganic polymer coagulant, abbreviated as PAC (poly aluminum chloride). It is a water-soluble inorganic polymer between AlCI3 and Al (OH) 3, with a chemical formula of [Al2 (OH) nCl6 nLm], where m represents the degree of polymerization and n represents the neutrality of PAC products. Among the m products, n=1-5 are high charge polymer cyclic chains with Keggin structure, which have high electrical neutralization and bridging effects on colloids and particles in water, and can strongly remove trace toxins and heavy metal ions, with stable properties. The inspection method can be carried out according to the GB 15892-2003 standard. Due to the bridging effect of hydroxide ions and the polymerization effect of multivalent anionsPacIt is an inorganic polymer water treatment agent with a relatively large molecular weight and high charge.

Polyaluminum chloride has properties such as adsorption, coagulation, and precipitation, but its stability is poor and it is corrosive. If it accidentally splashes onto the skin, it should be immediately rinsed 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 adaptability to water area, fast hydrolysis speed, strong adsorption capacity, large alum formation, fast mass density and sedimentation, low effluent turbidity, and good dehydration performance. Using spray drying products can ensure safety, reduce water accidents, and be 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 various turbidity levels of raw water, with a wide pH range, butpolyacrylamideCompared to polyacrylamide, its settling effect is far inferior.

The basicity of polyaluminum chloride is a relatively important indicator in polyaluminum, especially for polyaluminum products of drinking water grade. The lower the salinity, the higher the price, and each purchaser can operate according to the actual situation of the manufacturer. In addition, the basicity of polyaluminum chloride products produced and processed by different raw materials and processes also varies, which requires manufacturers to make adjustments. Improving the basicity of polyaluminum chloride products can significantly enhance the economic benefits of production and use. The increase in salinity from 65% to 92% can reduce production raw material costs by 20% and usage costs by 40%.