Fenton试剂氧化偶合混凝法处理含酚废水的机理研究

氧化偶合混凝法处理废水，是使其中的有机污染物在氧化剂的诱导作用下，发生偶合或聚合而被混凝过滤去除。本文采用低剂量Fenton试剂诱导氧化偶合混凝法处理苯酚及其衍生物模拟废水，取得良好效果。通过对苯酚氧化过程的分析及分子量分布的测定，证实了反应过程中确有偶合产物生成，并通过顺磁共振波谱（ESR）的研究及偶合产物结构的质谱（GC/MS）鉴定，推测了偶合反应的机理。该偶合反应为自由基偶合反应，偶合产物是由C－C键或C－O键联接而成的。

A MECHANISM STUDY ON FENTON REAGENT INDUCED OXIDATIVE COUPLING FOLLOWED BY COAGULATION FOR TREATMENT OF PHENOLIC WASTEWATER

Good efficiency was attained in treatment of simulated wastewater containing phenol and its derivatives with Fenton reagent as oxidant. The coupling products in reaction were confirmed by determination of molecular weight distribution. The mechanism of oxidative coupling was infered by the study of ESR and the structure determination of coupling products with GC/MS.The results show that the oxiditive coupling is the radical reaction and coupling products are formed by connection of C-C or C-O bond.