转子搅拌型三维电化学降解效能研究  

Degradation Efficiency of Rotor Stirred Three-dimensional Electrochemical

作　　者：段少芳 刘松[2] 江博[2] Duan Shaofang;Liu Song;Jiang Bo(County Environmental Monitoring Brigade ofJiangling,Jingzhou 434100;College of Chemistry and Environment Engineering,Yangtze University,Jingzhou 434023,China)

机构地区：[1]江陵县环境监察大队,湖北荆州434100 [2]长江大学化学与环境工程学院,湖北荆州434023

出　　处：《广东化工》2019年第17期69-70,68,共3页Guangdong Chemical Industry

摘　　要：自组装旨在消除短路电流的转子搅拌型三维电化学装置,以实际印染废水为样本考察装置的基质降解能力。结果表明,转子搅拌型三维电化学(Y装置)较常规三维电化学(W装置)废水氧化效率显著提升,反应20min时其化学需氧量(COD)、氨氮(NH4+-N)去除提升率分别达36.7%、75.7%;随着反应时间延长(20~80min),W装置COD去除率从47.9%上升到69.5%,Y装置去除率从65.5%上升到82.0%,去除提升率保持在18.0%以上。三维荧光光谱分析显示,印染废水中峰A、峰B和峰C强度均随着反应时间延长依次下降,且Y装置对应的荧光强度下降速度更快。研究表明,转子搅拌的设计显著提升了三维电化学氧化效率,实现了消除短路电流、增加有效电流的目的。A new three-dimensional electrochemical device with rotor stirring for eliminating short- circuit current has been assembled.Taking the actual printing and dyeing wastewater as a sample,the substrate degradation ability of the device is investigated.The results show that the chemical oxygen demand(COD)degradation efficiency of rotor stirred three-dimensional electrochemistry (Y device) is significantly higher than that of conventional three-dimensional electrochemistry (W device),and the removal lifting rates of COD and ammonia nitrogen (NH4+-N) reach 36.7 % and 75.7 % respectively when the reaction time is 20 minutes.With the extension of reaction time (20~80 min),the COD removal rate of W device increases from 47.9 % to 69.5 %,the removal rate of Y device increases from 65.5 % to 82.0 %,and the COD removal lifting rate of Y device is maintained above 18.0 %.Three-dimensional fluorescence spectroscopy indicates that the fluorescence intensity of peak A、peak B and peak C in dyeing wastewater decrease with the prolongation of reaction time and Y device decrease much faster.The results show that the design of rotor stirring significantly improves the efficiency of three-dimensional electrochemical oxidation and the purposes of eliminating short-circuit current and increasing effective current are achieved.

关 键 词：转子搅拌型三维电化学 短路电流 印染废水 三维荧光光谱 

分 类 号：X788[环境科学与工程—环境工程]