采用聚砜中空纤维超滤膜,十二烷基硫酸钠为表面活性剂,对含镉废水进行胶团强化超滤.研究了运行时间、十二烷基硫酸钠(SDS)浓度、膜操作压力、溶液pH、溶液中电解质浓度、与非离子表面活性剂Brij复配等因素对该工艺的影响.结果表明,该工艺对镉的去除率可达99%以上.但该工艺不适用于强酸性废水,电解质的存在会降低截留率,SDS与Brij复配能提高截留率.
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