气液两相脉冲放电反应器的设计及其对酸性橙Ⅱ的降解效果  

A Reactor Design of Gas-liquid Two-phase Pulse Discharge and Its Performance in Degrading Acid OrangeⅡ

作　　者：孙明[1] 郝夏桐[1] 鲁晓辉[1] 杨颜颜 金宏力 代存峰 

机构地区：[1]上海海事大学静电研究所,上海200135

出　　处：《高电压技术》2015年第2期498-503,共6页High Voltage Engineering

基　　金：国家自然科学基金(51207089);上海海事大学研究生创新基金(GK2013060);上海海事大学科研基金(20120097)~~

摘　　要：为了满足难降解有机物的处理要求,提出了喷嘴-筒式气液两相脉冲放电反应器的设计思想。为降低成本、便于放电现象的观察,圆柱状反应器采用透明有机玻璃加工而成,喷嘴高压电极和圆柱状高压电极为不锈钢材料。对该反应器进行了实验,观察到在液面上形成了较均匀的气、液两相放电。采用酸性橙II制备了模拟染料废水,研究了该反应器对模拟染料废水的降解效果。结果表明喷嘴-筒式气液两相脉冲放电可有效降解模拟染料废水中的酸性橙Ⅱ。随着脉冲峰值电压由-26 kV下降到-36 kV,模拟废水中酸性橙II的降解率提高了10%,对偶氮类染料降解起着重要作用的臭氧(O3)生成量增加了6 mg/L。在脉冲峰值电压为-36 kV,脉冲频率为50 Hz,放电喷嘴电极与液面距离为0,放电30 min时,反应器的能量效率可达到2.05×10-3 mol/J。研究结论为进一步研究多喷嘴-筒式电极形式的高压脉冲放电等离子体体系放电作用提供了依据。In order to satisfy the processing requirements of refractory organic matters, we proposed a design of gas-liquid two-phase pulsed discharge reactor with nozzle-cylinder electrode. In order to reduce cost and facilitate observation of discharges, the cylindrical reactor is made of transparent plexiglass, and it is equipped with a nozzle electrode and a cylindrical electrode, both made of stainless steel. We tested the reactor and observed relatively uniform gas-liquid two-phase discharges on solution surface. We prepared simulated dye wastewater using azo dye acid orange Ⅱ, and tested the reactor＇s effectiveness in processing this solution. The results show that acid orange Ⅱ in the simulated wastewater was effective degraded in the reactor. Increasing the reactor＇s peak applied voltage from-26 kV to-36 kV, the degradation rate of acid orange Ⅱ rose by 10%, while the output of O3, which plays an important role in degrading acid orange Ⅱ, increased by 6 mg/L. With 30-minutes discharge at peak voltage of-36 kV, repetitive pulse frequency of 50 Hz, and zero gap distance between the discharge nozzle electrode and solution surface, the proposed reactor reached energy efficiency of 2.05×10^-3 mol/J. The conclusions provided an experimental foundation for further studies on the discharge effect of multi-nozzle-cylinder discharge plasma systems.

关 键 词：放电等离子体 喷嘴-筒式反应器 酸性橙Ⅱ 降解 臭氧 能量效率 

分 类 号：X788[环境科学与工程—环境工程]