Membrane Fouling in the Reclamation of Secondary Effluent with an Ozone-Membrane Hybrid System

The current research is a pilot scale study on membrane fouling in an ozone-ceramic membrane hybrid system, aiming at the reclamation of secondary effluent which contains abundant organic substances and bacteria. Compared with the microfiltration process with 30 mg O 3 /L feed, the microfiltration w...

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Bibliographic Details
Published inSeparation science and technology Vol. 44; no. 1; pp. 121 - 130
Main Authors Zhu, Hongtao, Wen, Xianghua, Huang, Xia, Noguchi, Motoharu, Gan, Yiping
Format Journal Article
LanguageEnglish
Published Taylor & Francis Group 01.01.2009
Subjects
Ceramic membrane
membrane fouling
microfiltration
ozonation
secondary effluent
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Summary:The current research is a pilot scale study on membrane fouling in an ozone-ceramic membrane hybrid system, aiming at the reclamation of secondary effluent which contains abundant organic substances and bacteria. Compared with the microfiltration process with 30 mg O 3 /L feed, the microfiltration without ozone sustained for a longer period of time and produced greater filtrate volume, while all other conditions were kept constant. The results of size exclusive chromatography (SEC) show that the number of large molecules increases after ozonation; this part of organic molecules may contribute more to 0.1 µm membrane fouling. Other evidence proves that ozone brings about the lysis of bacteria. This may account for the increase in the number of large organic molecules after ozonation.
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ISSN:0149-6395
1520-5754
DOI:10.1080/01496390802391171