超重力-电催化耦合法降解含酚废水

将自制的超重力多级同心圆筒电解装置应用于电催化降解含酚废水的过程中, 解决电化学法处理废水存在"气泡效应"和"传质受限"导致的废水处理效率降低的难题。考察了超重力因子、电流密度、电解时间、电解质浓度、液体循环流量、苯酚初始浓度对废水降解效果的影响, 确定了超重力-电催化耦合法处理含酚废水的最佳工艺条件。结果表明:超重力因子为30、电流密度为200A/m²、电解质浓度为3g/L、液体循环流量为80L/h、电解时间为7h时, 处理初始浓度100mg/L的含酚废水, 苯酚去除率可达99.1%, COD去除率可达24.7%。超重力电催化法强化了离子传质过程, 实现了废水中苯酚的高效去除, 为含酚废水的处理研究探索了一种新途径。

Degradation of phenol in wastewater using high gravity coupled with electro-catalytic method

In order to improve processing efficiency by minimizing the impact of bubbles and mass transfer limitations in wastewater treatment, a novel high gravity electro-catalytic reactor was used in the electro-catalytic degradation of phenol in wastewater. The influences of high gravity factor, current density, electrolysis time, electrolyte concentration, liquid circulation flow rate and initial concentration of phenol on degradation efficiency were investigated and the high gravity electro-catalytic method optimum operating conditions were determined. The results showed that under the optimal conditions of high gravity factor 30, current density 200A/m², electrolyte concentration 3g/L, liquid circulation flow rate 80L/h and electrolysis time 7h, the phenol wastewater initial mass concentration of 100 mg/L, the removal rate of phenol and COD reached 99.1% and 24.6% respectively. High gravity electro-catalytic method enhanced the mass transfer process of the ions in solution, resulting higher removal efficiency phenol in waste water.