Sewage ventilation, sterilization and disinfection device for infectious disease hospitals

The utility model relates to the field of sewage ventilation, sterilization and disinfection for infectious disease hospitals, in particular to a sewage ventilation, sterilization and disinfection device for infectious disease hospitals, which comprises a sterilization and disinfection box, an ozone generator is mounted at the bottom of the sterilization and disinfection box, and connecting pipes communicated with each other are arranged between the ozone generator and the lower inner part of the sterilization and disinfection box. The ozone disinfection device has the beneficial effects that ozone is adopted as a means for disinfecting and killing germs, so that the ozone disinfection device is safer and more effective compared with a traditional physical mode; gas sequentially passes through the three sections of box body spaces to be sterilized, so that the sterilization efficiency is remarkably improved; the terminal breather pipe is made of cast iron materials and is good in durability, and a lightning p