电芬顿法降解苯酚废水的研究

对以空气扩散电极为阴极,铁板为阳极的电化学体系降解苯酚模拟废水进行了研究。采用分光光度法测定苯酚浓度,研究了pH值、电解时间和电流密度对苯酚去除率的影响。结果表明,电芬顿体系对含酚废水有很强的降解能力,初始浓度为300 mg/L的苯酚溶液,在电流密度20 mA/cm2条件下电解180 min,苯酚去除率99.5%,COD(Chemical Oxygen Demand)去除率85.1%。

Degradation of Phenol Wastewater by Electro-Fenton Process

Simulated wastewater of phenol was electrolyzed by electrochemical system including air diffusion electrode as cathode and iron plate as anode. Phenol concentration was measured by spectrophotometric method and the influence of factors such as pH, electrolysis time and current density on phenol removal rate was studied. The result showed that Electro- Fenton system had strong degradation capacity. When initial phenol concentration was 300 mg/L and current density was 20 mA/cm2, the phenol removal rate reached 99.5% and chemical oxygen demand （COD） removal rate reached 85.1% after electrolyzing for 180 min.