采用三种孔径分别为200 nm、50 nm和20 nm的陶瓷膜,以聚丙烯酸为络合剂,含Cu2+废水作为模拟废水,研究聚合物强化膜分离处理低浓度重金属废水的过程.重点考察运行时间、跨膜压差、聚合物/金属离子质量浓度比P∶M值及pH对渗透通量和重金属离子截留率的影响.研究表明,控制合适的条件,陶瓷微滤膜和超滤膜对Cu2+均达到99.8%的截留率,且能得到较高的渗透通量.
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