More and more water pollution affects human life, and sewage purification is an urgent task. Ozone is growing in popularity as a method for wastewater treatment due to its oxidizing properties. People use modern technology to make ozone, such as convert oxygen into ozone by using either corona discharge or ultraviolet radiation. It can produce a reactive gas to kill bacterias, mold, and others found in water.
And there are some advantages:
It is faster than other chemical methods.
It is more effective than chlorine in eliminating viruses and bacteria.
It does not leave harmful residual because it decomposes rapidly
It can effectively remove microorganisms.
Since ozone is produced on site, there are fewer safety issues associated with transportation and handling.