During the epidemic period, how to treat the medical wastewater in the isolation ward of new coronavirus? The novel coronavirus has a body length of 80nm to 120nm. However, traditional sewage biological treatment is often done by biological contact oxidation and activated sludge process.

With the acceleration of China's urbanization and the strengthening of residents' awareness of environmental protection, the odor, noise and sludge produced by ground sewage plants purify sewage, which cause secondary pollution to the surrounding environment.

There are two filtration methods of flat ceramic membrane, which are positive pressure terminal filtration and negative pressure suction filtration.

Membrane separation technology is considered as a new separation technology with high efficiency and energy saving.

Membrane separation technology is a kind of high-tech developed rapidly after 1960s. It is widely used in chemical industry, food, medicine, environmental protection and other fields because of its high separation efficiency, convenient operation, compact equipment and energy saving.