• 关键词：超滤  含聚污水  通量衰减  浓差极化  凝胶层形成  膜孔堵塞

• 基金项目：国家重点基础研究发展规划(973)项目(No2004CB418505)

• 王北福
• 哈尔滨工业大学市政环境工程学院, 哈尔滨150090

• 于水利
• 哈尔滨工业大学市政环境工程学院, 哈尔滨150090

• 镇祥华
• 哈尔滨工业大学市政环境工程学院, 哈尔滨150090

• 荆国林
• 哈尔滨工业大学市政环境工程学院, 哈尔滨150090

• 摘要：研究了超滤处理含聚合物污水过程中操作压力、膜面流速、聚合物浓度、料液流变性、阻力等影响因素对膜通量的影响,并进行理论分析,揭示了通量衰减机理.研究结果表明,通量衰减的机理是聚合物的浓差极化和凝胶层的形成,其次是原油和无机物对膜孔的堵塞.

• Abstract：There is a lot of polymer-contained sewage produced from polymer flooding process in Daqing oilfield. As polymer is the main factor that determines the water characteristics, the mechanism of UFflux influenced by polymer-contained sewage is different from that done by common oil-contained sewage. The mechanism of flux decline was showed through theoretically analyzing in terms of feed-water rheology, operation pressure, cross-flow velocity, polymer concentration and various resistances. The results indicated that the mechanism of flux decline was resulted by concentration polarization and gel layer formation of polymer, and the other reason was that crude oil and inorganic matter plugged membrane pores.

• Key words：ultrafiltration  polymer-contained sewage  flux decline  concentration polarization  gel layer formation  membrane pore plugging

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