China’s research and application of ceramic membrane technology started relatively late. In the 1990s, the Chinese Academy of Sciences, the University of Science and Technology of China and the Nanjing University of Chemical Technology and other high-level scientific research institutions actively participated in and completed the “Ninth Five-Year Plan” national key scientific and technological research and “863″ plan and other scientific research projects, successfully realized ceramic membrane materials and preparation. The technological breakthrough in research has broken the monopoly position of foreign companies in the field of ceramic membrane products.
Membrane separation technology is considered to be a new type of separation technology that is energy efficient and energy efficient. It is an effective means to solve major problems such as energy, resources and environment faced by human beings. According to statistics, at the beginning of the 21st century, the annual sales volume of global membranes and equipment exceeded US$60 billion, with an annual growth rate of around 30%. Some experts even predicted that the 21st century membrane technology and the integration technology of membrane technology and other technologies will largely replace the traditional separation technology, achieve the purpose of energy saving, product quality improvement, and greatly promote the progress of human science and technology and promote Social sustainable development. The application of membrane technology will involve chemical industry, petroleum and petrochemical, bio-chemical, food, electronics, pharmaceutical and other industries. Purified water and water purification equipment developed with membrane technology will reach thousands of households.
With the rapid development of China’s economy, the amount of water treatment in industrial production and daily life is increasing. Taking water pollution as an example, 77% of China’s sewage is directly discharged without treatment, and 46.7% of rivers are polluted, which brings great harm to people’s health. In the field of water treatment, membrane materials have become a key component in processes such as fluid separation, concentration, and purification. Compared with organic membranes, inorganic ceramic membranes have many advantages such as high mechanical strength, resistance to organic solvents, abrasion resistance, antimicrobial attack, chemical attack, membrane pores, deformation resistance, easy operation, and easy cleaning. It represents the development direction of water treatment technology.
In the 21st century, on the one hand, the recognition and acceptance of ceramic membrane technology in the domestic industry has gradually increased, and the number of application cases has been increasing. On the other hand, with the technological advancement and market expansion of domestic ceramic membrane enterprises, domestic enterprises and The gap between technology and brand of foreign advanced enterprises is getting closer, and the domestic ceramic membrane industry has developed rapidly. In 2014, the annual installation area of China’s ceramic membrane equipment has reached about 53,000 square meters. However, the development process of ceramic membrane technology in China is relatively short, and the maturity and understanding of technology still need to be further improved. The application rate of membrane separation technology with ceramic membrane as the core is still low in the whole country, and the space can be expanded in the future.
Inorganic ceramic membranes were first industrialized in the dairy industry and the wine industry in France, and gradually expanded into the food industry, environmental engineering, biomedicine, and chemical petroleum. The research and development of inorganic membranes has received extensive attention in major industrial countries.