关键词: 动态膜, 膜污染, Fenton试剂, 氧化

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