Characteristics of Ring-to-Cylinder Type Electrode System on Pulsed Discharge in Water

Abstract

AbstractThe pulsed streamer corona discharge in water has been investigated for oxidation of organic contaminants in water solution. The reactor with ring-to-cylinder electrode system has been designed and tested in this investigation. It was found that the insulation method of the ring electrode was the most important factor to lower streamer initiation voltage. A large volume of streamer corona discharge was generated around the ring electrode and the streamer corona discharge formations are greatly dependent on the electrode geometry, polarity and the water conductivity. The degradation of phenol was also tested by this electrode system. It was found that the degradation rate of phenol was higher for the positive pulse than that of negative pulse, and the intermediate products were removed when the treatment time increased.