The Effect of Pulse Discharge Control on Ozone Production

In this study, the effect of waveform control of pulsed discharge on ozone production for water treatment under atmospheric pressure is investigated and optimized. Using solid-state linear transformer driver (LTD) which has flexible waveform control capability, the applied voltage pulse has been separated into two parts, and each can be independently controlled while keeping the total input energy constant. The experimental results have shown that if the two parts are consecutive to each other without time interval, the second part of the discharge is inefficient for producing ozone. However, by introducing an interval between two voltage parts, making it effectively a double-pulse discharge, an increase in the energy yield of ozone production is observed. In addition, the ozone producing energy yield increases when the pulse interval is lengthened, up to 10 ms. Therefore, in conclusion, it has been observed that shorter pulsewidth and longer pulse interval lead to more efficient ozone production by pulsed discharge under atmospheric pressure.