聚乙烯亚胺(PEI)络合-超滤处理水中Cu^(2+)过程中的膜污染

Membrane Fouling in Cu^(2+) Removal Process of Ultrafiltration of PEI-Cu^(2+) Complex in Water

该文依据膜流动电位及zeta电位的测定原理设计了一套试验装置,可对中空纤维膜的流动电位进行测定。通过该装置研究了聚偏氟乙烯(PVDF)中空纤维超滤膜的动电现象在聚乙烯亚胺(PEI)络合—超滤处理水中Cu2+过程中的作用及规律,以此分析膜污染发生的过程与机理,为如何减轻和清洗超滤膜污染提供了依据。

According to the theories of membrane streaming potential and zeta potential, an experimental device was designed to measure streaming potential of hollow fiber membranes. By this design, the process of ultrafihration of PEI-Cu^2＋complex in water, changes of removal rate of Cu^2＋ and streaming potential of the membrane were examined. The electrokinetic phenomenon and mecha- nism of poly vinylidine fluoride （PVDF） hollow fiber membrane pollution were studied and data for the reduction and cleaning of the membrane contamination were given in this paper.