Speaker
Description
Ozone has strong oxidation power and no-residual toxicity, therefore it is expected one of the next-generation oxidants. There are various applications using ozone such as clarification of drinking water, industrial wastewater treatment, and so on. At present, dielectric barrier discharge is the main method used for commercial ozonizers. However, as most of the input energy is lost as heat, its low energy efficiency into plasma phase has been a problem. In recent years, it is demonstrated that the pulsed discharge produced by 7 ns duration pulsed power gave us the high energy efficient ozone generation. However, there is still problems that the maximum ozone concentration using the nanosecond pulsed discharge has been saturated at approximately 40 g/m3. Therefore, in this study, the experimental results of high concentration ozone generation using nanosecond pulsed discharge was performed.
In this study, the purpose of improving pulse rise time, nanosecond pulse forming line using peaking switch was developed. The fast rise time pulse was formed by a peaking switch, and the rise time of pulse is shorten into 2 ns on the discharge reactor. Additionally, we investigated the effect of pulse rise time on ozone generation. As the result, in case of the experiment of faster rise time pulse, the efficiency of ozone generation is higher than the previous one which has 7 ns pulse which and 3 ns pulse rise time.
