摘要
用电液压脉冲放电等离子体实验平台和大容量反应器对TNT废水进行处理,在放电电压为24—48kV,废水体积为7—12L,TNT初始浓度为41.67—90mg.l-1,电极为尖-尖式,间距为3—8mm的条件下,增加放电次数、升高放电电压和增加电极绝缘层长度都能提高TNT降解率,而提高溶液的电导率会降低TNT降解率.在一定的放电电压下,电极间距有一个最佳值;投加铁屑可明显提高TNT降解率,投加铁屑时,G值最高可达1.34×10-1molecules·h-1·eV-1.
The electro-hydraulic pulse plasma wastewater treatment apparatus with bigger reactor was used to investigate the influence factors of TNT degradation. In the experiment, discharge voltage ranged from 24 kV to 48kV and the concentration of TNT wastewater was 41.67mg·l^-1 to 90mg·l^-11 which volume was 7L to 12L. The electrode-form was stick-stick and the distance between two electrodes ranged trom 3mm to 8mm. The experiment results are as following ： increasing discharge time, discharge voltage and extend length of electrode insulation layer will enhance TNT degradation rate, but increasing conductance of wastewater will reduce TNT degradation rate. When the discharge voltage was constant, there was an optimum electrode-distance. Adding iron will enhance TNT degradation rate evidently. When adding iron, the energy efficiency value G reached 1.34×10^-1 molecules ·h^-1 ·eV^-1.
出处
《环境化学》
CAS
CSCD
北大核心
2008年第5期583-586,共4页
Environmental Chemistry
基金
总后科研基金资助项目[2004]营科字第60号
关键词
电液压脉冲放电
TNT废水
降解
能量效率
TNT wastewater, electro-hydraulic pulse discharge, degradation, energy efficiency.
