China has a rich source of raw materials, which makes the production cost of polyaluminum chloride relatively low. There are many production process routes for polyaluminum chloride. At first, aluminum ash was used as raw material, and then clay ore, kaolin ore and bauxite were used. Now, due to the continuous improvement of requirements for product quality indicators in domestic and foreign markets, the raw materials used in China have gradually turned to aluminum hydroxide. At present, domestic solid products mostly adopt drum drying, and the technology has approached or reached the international advanced level.
Polyaluminum chloride is a highly effective water purifying agent, which can remove bacteria, odor and color. The water purification agent industry in China has ushered in new opportunities for development. It is urgent for the polyaluminum chloride water purification agent industry to improve the quality and carry out large-scale production. Because of its outstanding characteristics and advantages, it has a wide range of applications. Its consumption can be reduced by more than 30% compared with traditional water purification agents, and its cost can be saved by more than 40%. It has become a recognized excellent water purification agent at home and abroad.
In addition, PAC can also be used to purify drinking water, tap water and other special water quality treatment, such as iron, cadmium, fluoride, radioactive pollutants, floating oil, etc. In recent years, polyaluminum chloride has developed into a water purifying agent with mature technology and large market sales, and has a trend to gradually replace the traditional water purifying agent.
At present, the annual output of aluminum polychloride in the world is about 600,000 tons (based on solid products with aluminum oxide content of 30%), including 180,000 tons in China and 200,000 tons in Japan. The application of polyaluminum chloride in Europe has accounted for about 70% of the whole municipal water treatment market, and Japan has accounted for about 90% of the whole municipal water treatment market. The water purifying agents used in China's market mainly include polyaluminum chloride, aluminum sulfate, polyaluminum ferric chloride, etc.
Among them, polyaluminum chloride accounts for more than 60% of the domestic water purification agent market, and is one of the environmental protection products that the country focuses on developing in the Tenth Five Year Plan. Polyaluminum chloride is mainly used in industrial sewage, tap water purification and other fields in China, and the consumption of these two fields accounts for about 70% of the total consumption.
It accounts for more than 40% of industrial sewage purification; The proportion of tap water purification and domestic sewage treatment is about 30%; Industrial circulating water and river reservoir purification account for 20%; Others account for 10%. With the further improvement of the national requirements for environmental protection and treatment, the use of industrial sewage treatment will still increase significantly.
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