Abstract: In order to reduce the on-line membrane fouling resistances of the precoated dynamic membrane treating the emulsified oil wastewater，a coupling process of precoated dynamic membrane with Fenton reagent for treatment of oily wastewater was studied. Impacts of Fe2+/H2O2 ratios，pH values and operation temperatures on membrane fouling degree were investigated. The results showed that the addition of Fenton reagent obviously reduced the on-line membrane fouling resistances and removed the contaminants from the solution and surface of dynamic membrane. The optimal ratio of the CH2O2/CFeSO4 was about 1，and the steady permeate flux was over 3 times more than that without the Fenton reagent. The Fenton reagent performed better to reduce the membrane fouling in acidic conditions. The highest level of the steady flux of membrane was obtained at pH 3. The optimum operating temperature was 312 K. Under conditions at higher temperatures，the steady flux of membrane was in a low level despite the high initial flux. The reduction extent of the Fenton reagent on the on-line membrane fouling resistance reduced as the oil concentration increased. The oil retention ratio was less than 1% with adding and not adding Fenton reagent.

Key words: dynamic membrane, membrane pollution, Fenton reagent, oxidation

摘要： 为减低预涂动态膜处理乳化油废水过程中的在线膜污染阻力，对Fenton试剂协同高岭土预涂动态膜处理乳化油废水特性进行了研究，考察了Fe2+/H2O2配比、溶液pH值及操作温度对减缓膜污染程度的影响。研究结果表明：投加Fenton试剂可明显地降低在线膜污染阻力，有效去除溶液及动态膜表面的污染物，CH2O2/CFeSO4最佳配比为1，其稳态膜通量是未投加Fenton试剂的3倍以上；Fenton试剂在酸性条件下减缓膜污染的效果较好，其中pH值为3时的稳态膜通量最高；最佳工艺操作温度为312 K，温度过高时尽管初始膜通量非常高，但稳态膜通量较低；原料液中油浓度越高，Fenton试剂对在线膜污染阻力的削减程度越小，投加和未投加Fenton试剂时达到稳态时的截留率相差在1%以内。

关键词: 动态膜, 膜污染, Fenton试剂, 氧化