In order to examine the effect of ozone in the aquaous phase, studies were performed on the relationship between the sterilizing effect and the injection rate of ozone, reaction temperature or dissolved organic carbon.
As a result, a linear and high coefficient relationship was seen between residual bacterial counts and the injection rate of ozone, and the relation depended on the temperature.
Injection rate of ozone decreased along with the decline of the temperature. It was realized that the effect of sterilization is more effective at a lower temperature.