大气压介质阻挡放电降解水中苯胺  

Degradation of aniline wastewater using dielectric barrier discharge at atmospheric pressure

作　　者：武海霞[1,2] 徐炎华[1] 方志[3] 陆晨[1] 苗译夫 

机构地区：[1]南京工业大学环境学院,江苏南京211800 [2]江苏省工业节水减排重点试验室江苏南京210009 [3]南京工业大学自动化与电气工程学院,江苏南京211800

出　　处：《南京工业大学学报（自然科学版）》2013年第6期11-16,共6页Journal of Nanjing Tech University(Natural Science Edition)

基　　金：国家水体污染控制与治理科技重大专项;国家自然科学基金(50707012);南京工业大学实验室开放项目

摘　　要：采用大气压介质阻挡放电对含苯胺的废水进行了处理,研究各种因素对苯胺废水处理效果的影响,对处理过程中溶液的总有机碳(TOC)、pH和电导率的变化进行了测定,探讨放电特性和机制。结果表明:苯胺降解率随反应时间的延长而增加;初始浓度升高,苯胺去除率降低,去除量增加;电导率增加、溶液中添加Na2SO4和NaNO3时均会降低苯胺去除率;投加H2O2对DBD起协同作用,电极距液面4 mm,放电功率235 W,反应10 min时去除率最高由35.76%增加至89.86%。A dielectric barrier discharge（DBD） reactor was designed for treatment of aniline wastewater. Discharge characteristics were measured by voltage and current waveforms,light-emission pictures and op- tical emission spectroscopy. The effects of various parameters like aniline concentration, wastewater con- ductivity, addition of Na2SQ, NaNO3 and H202, change in total organic carbon （ TOC ）, pH and conduc- tivity were investigated for organic compound degradation. Results showed that the abatement of aniline increased with the treatment time. Under the same conditions,the degradation rate decreased with the in- creasing of the wastewater conductivity and addition of Na2 SO4 and NaNO3. Adding a certain dosage of hydrogen peroxide to the wastewater could accelerate the degradation rate of the aniline. Removal rate in- creased from 35.76% to 89. 86% after 10 rain discharge at 235 W of discharge power and 4 mm of dis- tance.

关 键 词：介质阻挡放电(DBD) 低温等离子体 苯胺 降解 

分 类 号：X703[环境科学与工程—环境工程]