Activated carbon adsorption-advanced electro-oxidative regeneration for the treatment of biorefractory organic pollutants  

作　　者：ZHOUMinghua DAIQizhou LEILecheng WANGDahui 

机构地区：[1]InstituteofEnvironmentalEngineering,ZhejiangUniversity,Hangzhou310027,China

出　　处：《Chinese Science Bulletin》2005年第5期489-491,共3页

基　　金：supported by the National Natural Science Foundation of China(Grant No.20306027);the Interna-tional Foundation for Science(w/3553-1).

摘　　要：The wastewater containing toxic and biorefractory pollutants such as aromatic compounds cannot be treated by conventional action due to their toxicity and structure stability, which has been one of the key technical difficulties in wastewater treatment in China.The wastewater containing toxic and biorefractory pollutants such as aromaticcompounds cannot be treated by conventional action due to their toxicity and structure stability,which has been one of the key technical difficulties in wastewater treatment in China. Advancedoxidation processes (AOPs) and activated carbon (AC) adsorption are two widely investigatedtreatment methods. Recently, advanced electrochemical oxidative process (AEOP), the newly developedAOPs, has attracted much more interest to wastewater treatment due to its easy applicability toautomation, high efficiency, and environmental compatibility'1 3]. Hydroxyl radical, possessing verystrong oxidation potential, can be formed by polarization on high oxygen over-voltage electrodessuch as PbO_2- It was reported'41 that mass transfer would become the decisive factor when thepollutant concentration was relatively low, which resulted in the degradation only occurring on thesurface of the electrodes rather than the bulk of the solution. So that many degradationintermediates would stay on the anode and led to the electrode fouling, which reduced thedegradation efficiency. Therefore, it is urgently necessary to optimize the electrochemical reactorto enhance the time-space efficiency for organic pollutants degradation.

关 键 词：活性炭 毒性 相转移过程 废水处理工艺 吸附作用 有机污染物 

分 类 号：X703[环境科学与工程—环境工程] TQ424.1[化学工程]