Ozone-in-water, has a strong oxidation ability. It can kill the bacteria, fungi, escherichia coli, virus unknown microbes in the water quickly, and can oxidize organic matter completely. Through ozonization of swimming pool water, the purpose of disinfection, sterilization, deodorization, and prevention of the spread of infectious diseases can be achieved. At the same time, ozone can oxidize iron, manganese and other metal ions in water, and decompose tiny organisms that scatter light in water, thus greatly improving the clarity of water.