Ceramic membrane is a kind of high performance filter material which is sintered with Al2O3, ZrO2, TiO2, SiO2, SiC and other inorganic materials. It can overcome the other filter components: the temperature resistance is poor, the filter material is below 200 c, the glass fiber is below 400 C, the long-term working temperature is 280, and the temperature resistance of the ceramic film can be as high as 1000 C (industrial furnace kiln. The flue gas can reach hundreds or even thousands of degrees Celsius, and the humidity and large gas are easy to stick to the bag and it is difficult to fall off to influence the operation of the equipment; it has the weakness of relatively short service life, and has the characteristics of unique acid alkali resistance, solvent resistance, anti microbial corrosion and so on. The service life can long be up to 5-8 years, the maintenance cost is low, the effort is easy to clean and the filtering precision is high. (tens of nanometers to a few microns) and low energy consumption.

Because of its various advantages, it plays an important role in the process of gas - solid and liquid - solid separation in the process of high temperature flue gas filtration, industrial dust collection, municipal sewage purification, and industrial wastewater treatment. It is believed that with the increasing demand for energy saving and emission reduction, the application of ceramic membrane will be more and more extensive.

Membrane separation technology has been known as one of the high-tech applications in twenty-first Century, and ceramic membrane is the leader of membrane technology. The research of ceramic membrane began in 1940s. In 1980s, the developed countries have been widely used, but China is still a blank in this field. Over the past ten years, relying on independent innovation, China's ceramic membrane technology has not only broken the blockade and monopoly of foreign countries, but also has reached the international leading level. Membrane is a kind of polymer chemical material. It has numerous small holes which can only be calculated by micron or nanometer. It has the functions of separation, concentration, purification and desalination, and it has the characteristics of high efficiency, energy saving, environmental protection and molecular filtration. After the invention of membrane technology, it is widely used in the fields of food processing, water purification, environmental treatment, pharmaceutical industry, chemical industry and petroleum chemical industry, which can be used to realize the purification and separation of products. Ceramic membrane is a separation membrane made of high temperature sintered ceramic material. Because of its unique patience, it has become one of the fastest growing and promising varieties in the membrane industry. The research of ceramic membrane in China began in the early 80s of twentieth Century and entered 90s. The former National Science and Technology Commission organized the technology of the industrialization of inorganic ceramic membrane and promoted the industrialization process of ceramic microfiltration membrane. The national "863" plan also included the "inorganic separation catalytic membrane" project. Ceramic membranes are mainly divided into three types: flat, tubular and multi-channel. The plate ceramic membrane has the advantages of large filtration area, good chemical stability, acid alkali resistance, high temperature resistance, strong resistance to microorganism, high separation precision, high mechanical strength, easy regeneration and long service life. At present, the most recognized flat ceramic films in the world are ITN, Japanese bright electric house and flat ceramic membrane. China's localization greatly reduces the cost of enterprise application. The unparalleled excellence in the field of industrial sewage treatment by Jiangxi national porcelain Environmental Protection Technology Co., Ltd. will open a new situation for China's environmental protection industry and promote the sustainable development of the society.