阳极等离子体电解处理高盐废水中的苯酚

Anode plasma electrolysis for degradation of phenol in high salt aqueous solution

摘要: 采用阳极等离子体电解处理高盐废水中的苯酚.研究了阳极等离子体产生的条件,以及废水中盐的浓度、苯酚的质量浓度和处理时间对废水中COD去除率的影响.实验结果表明,在苯酚质量浓度为0.2g·L^-1,NaCl浓度为0.4mol·L^-1的溶液中,施加90V槽电压,处理10min,苯酚的去除率达100%;处理20min,废水的COD值从0.464g·L^-1降到0.010g·L^-1,COD去除率可达97.8%.探讨了阳极等离子体电解处理高盐废水中苯酚的机理.

Abstract: Anode plasma electrolysis was used to treat phenol in aqueous solution with high concentration of salt. The generate conditions of anode plasma and the influence of various factors, such as salt concentration, phenol concentration and treating time, on the removal rate of COD were studied. It was demonstrated from the experimental results that, under the conditions of phenol 0.2 g·L^-1, NaCl 0.4 mol·L^-1, applied voltage 90 V on the bath, the degradation efficiency of phenol was 100% after treatment for 10 min; the COD concentration decreased from 0.464 to 0.01 g·L^-1, and the COD removal rate reached to 97.8% after treatment for 20 minutes. Meanwhile, the mechanism of anode plasma electrolysis for treating phenol in high salt aqueous solution was proposed and discussed preliminary.