In order to improve the efficiency of dielectric barrier discharge (DBD) contaminants treatment and reduce the treatment cost, a multiphase DBD plasma water treatment reactor is used in this article. When processing methylene blue solution, the electrode distance is 3 mm, the input voltage is 85 V, and the input frequency is 7.8 kHz. The degradation rate can be maintained at about 90% when the experiment is carried out with different concentrations for 10 min. The energy efficiency value of the solution with different concentrations is continuously rising, and the energy efficiency of the solution with a concentration of 150 mg/L reaches 2091 mg/kW $\cdot \text{h}$ . In experiments under different water volume conditions, the degradation rate of the solution with 300 mL water volume was 74% after the same treatment time 30 min, compared with the degradation rate of 100 mL water volume of 89.3%, but the amount of methylene blue in the degraded solution increased. In the experiment of adjusting the gas volume to 100 ml/min, it is found that when the gas volume increases to 100 ml/min, the degradation rate is 86%, which is 20% higher than 67.3% when the gas input is 60 ml/min.

中文翻译：

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分离式多相介质阻挡放电反应器的研制及亚甲基蓝处理效果的研究

为了提高介质阻挡放电（DBD）污染物处理效率，降低处理成本，本文采用多相DBD等离子水处理反应器。处理亚甲蓝溶液时，电极距离为3 mm，输入电压为85 V，输入频率为7.8 kHz。不同浓度实验10 min时降解率可保持在90%左右。不同浓度溶液能效值不断上升，150mg/L溶液能效达到2091mg/kW $\cdot \text{h}$ . 在不同水量条件下的实验中，相同处理时间30 min后，300 mL水量的溶液降解率为74%，而100 mL水量的降解率为89.3%，但亚甲蓝的量在降解溶液中增加。在调节气量到100ml/min的实验中发现，当气量增加到100ml/min时，降解率为86%，比进气量60时的67.3%提高了20%毫升/分钟。