新型多电极并联介质阻挡放电反应器的放电特性研究

Discharge characteristics of a novel multi-electrode paralleling DBD reactor

为了提高单一放电电极介质阻挡放电(DBD)反应器的能量利用率,该研究建立了多电极并联DBD水处理体系,考察该反应器的放电特性及其对甲基橙(MO)的脱色效果。结果表明,与单一高压电极的DBD反应器相比,多电极并联的电极形式有效地降低了能量传输过程中的损耗,提高了系统的能量利用效率,进而促进了体系中MO的脱色,且相应的臭氧(O_(3))生成量增加。在实验考察的相同系统操作参数条件下,MO的脱色效果可由单一电极条件下的73.71%提高到5个电极条件下的96.11%;5个高压电极并联的DBD反应器产生的O_(3)浓度是单个高压电极DBD反应器的2.13倍。

In order to enhance the energy utilization efficiency of the Dielectric Barrier Discharge(DBD)with one discharge electrode,a DBD water treatment system with paralleling multi-electrode was set up in the research.The discharge characteristics and the decolorization ablility for the methyl orange(MO)was investigated.The results showed that the DBD system with multiple electrodes could alleviate the energy loss,enhance the energy utilization efficiency and then improve the decolorization of the MO and the ozone formation in the reaction system.Under the same experimental conditions,the decolorization rate of the MO increased from 73.71%in the DBD system with one electrode to 96.11%with five electrodes.Furthermore,the ozone concentration formed in the five-electrodes DBD system was 2.13 times of that generated in the one-electrode DBD system.