99.99% liquid disinfection Ultrafiltration membrane can be a self consistent element in domestic household but is not used as a separate element in industry. It takes its own place in the filtration system therein. These membranes can be used for preliminary treatment before deep water desalination (for example, in heat power energy) or for advanced treatment after disinfection (for example, in sewage water treatment). The ultrafiltration membrane pores' size ranges within 0.01 — 0.1 µm. It is enough to trap waterweeds. Pathogens and viruses. The viruses' size starts from 0.02 µm, and bacteria — from 0.04, which is 2 times and 4 times bigger than the physical barrier diameter.