分别从污染物的纳滤过程、溶液性质以及预接触时间等因素探讨纳滤膜去除环境微污染物布洛芬(IBU)的性能.结果表明,随着pH的增大布洛芬水溶液在纳滤过程中的通量也随之增大,布洛芬的离子化程度逐渐增大,其与膜面负电荷的互斥作用也增强,布洛芬溶液的纳滤过程持续保持较高的截留性能;加入天然有机物(NOM)后,布洛芬溶液膜通量明显降低,截留率值增大,膜面对IBU的吸附量降低;预接触时间的增大,对IBU的纳滤过程起始通量影响较大,膜面对IBU的累积吸附量变化并不大.
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