Water treatment sterilization mainly includes ultraviolet sterilization and ozone sterilization. Ultraviolet disinfection is a physical method to achieve disinfection by using light irradiation in this wavelength range. On the other hand, ozone sterilization is the oxidation-reduction reaction of ozone in water, which produces monoatomic oxygen (O) and hydroxyl (OH) with strong oxidation ability, and oxidizes organic substances, bacteria and microorganisms in water.