炭在脉冲放电过程中对污水中有机物的降解作用

The effect of carbon on organic wastewater degradation in the process of pulse discharge

在脉冲流光放电与活性炭或活性炭纤维联合处理有机废水过程中,对活性炭和活性炭纤维的作用进行了研究.结果表明:脉冲流光放电与活性炭或活性炭纤维联合处理具有协同效应,甲基橙的降解率分别提高近22%和24%.在联合处理过程中,活性炭和活性炭纤维主要起催化降解作用,反应机理可能是表面诱导O3发生自由基链式反应产生.OH.进一步数据分析表明,联合处理过程可以实现活性炭和活性炭纤维的再生.联合处理过程中加入H2O2,对.OH的产生具有促进作用,提高了O3和UV(紫外线)的利用率,而且还有利于活性炭和活性炭纤维的再生.

The fimction of activated carbons and activated carbon fibers were investigated in the process of combined treatment of pulsed streamer discharge when used for degradation of organic wastewater. The result shows that a synergetic effect has fomled when the pulsed streamer discharge is combined with the activated carbons or the activated carbon fibers, and the degradation rate of methyl orange has been enhanced 22% and 24% respectively. The activated carbons and the activated carbon fibers primarily play a catalytic role in the combined treatment. The reaction mechanism is that ozone is induced to cause a radical chain reaction and generate hydroxide radicals by the activated carbons and the activated carbon fibers surface. Further data analysis indicates that regeneration of activated carbons and activated carbon fibers is achieved in this process. With the addition of H2O2, synergistic effects are generated for the formation of the hydroxyl radical, which raise the utilization ratio of O3 and UV. Furthermore, it is also helpful in the regeneration of the activated carbons and the activated carbon fibers.