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 raw water, with a wide pH range, but its settling effect is far inferior to polyacrylamide.

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