Scope of application: household water quality and sanitation, small and medium-sized food processing plants, meat processing plants and small domestic wastewater recovery and treatment. Ozone is also active against yeast and parasites. For example, it can be used to remove the following types of microorganisms and viruses. It has been proved that ozone has a very strong killing effect on viruses. For example, when the ozone concentration is 0.05-0.45 mg/L, Polay virus will lose its activity within 2 minutes. ? Sterilization ozone has a fast sterilization speed, which can decompose organic substances and chlorinated hydrocarbons in water, oxidize heavy metals, retain beneficial trace elements and minerals, make water weakly alkaline, and produce direct drinking water with good export feeling after in-machine filtration and activated carbon adsorption; If it is combined with pre-filtration, the use effect is better. Moreover, the residual ozone is quickly decomposed and reduced to oxygen after the action, and there is no residue. Cleaning vegetables and fruits with ozone water for disinfection can degrade pesticides and prolong storage time. Remove the fish; Meat hormones ensure food health. Tableware cleaning, disinfection and sterilization are efficient and have no toxic or side effects. Health care has a good effect on the health, beauty and cleaning of infants and women, and has special effects on dermatoses and beriberi caused by fungi.