With the continuous development of urban planning, more and more university campuses move to the suburbs, and gradually develop into university city. There are a large number of schools, high degree of greening, large and concentrated water consumption.

With the development of China's economy, more and more emerging technologies are used in all walks of life, and as the leader of new technology, ceramic membrane is more and more recognized and praised, and is widely used in more industries.

China is rich in cotton resources, and short cotton villi resources are very rich. If the cottonseed is completely peeled after rolling, the short down can be equivalent to 15% - 20% of the total lint yield. Therefore, short cotton is an important cellulose resource.

Organic membranes are prone to pollution under harsh water treatment environmental conditions, which restricts the use of some wastewater treatment projects. Technicians are paying more and more attention to the application characteristics of ceramic membranes instead of organic membranes in the field of wastewater treatment.

The main application of inorganic ceramic membrane separation equipment is ultrafiltration and microfiltration membrane in milk industry. The microfiltration membrane intercepts fat, bacteria and macromolecular casein, and passes through milk protein, lactose, salts and other substances with low molecular weight. Only small molecules such as lactose, soluble salt and non protein can pass through the ultrafiltration membrane.