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| Research and Applications of Membrane Technology in Printing and Dyeing Wastewater Deep Treatment |
| Received:June 12, 2010 Revised:February 15, 2011 |
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| DOI： |
| KeyWord:printing and dyeing wastewater ultrafiltration （UF） nanofiltration （UF） reverse osmosis （RO） deep treatment |
| Author | Institution |
| CHEN Jian-bo |
Zhejiang Stone Environmental Engineering Co.，LTD.，Huzhou 31300，China |
| CHEN Hao |
Zhejiang Stone Environmental Engineering Co.，LTD.，Huzhou 31300，China |
| FAN Zhong-chao |
Zhejiang Stone Environmental Engineering Co.，LTD.，Huzhou 31300，China |
| JIN Dan |
Zhejiang Stone Environmental Engineering Co.，LTD.，Huzhou 31300，China |
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| Abstract: |
| Two kinds of membrane integration processes of UF-NF and UF-RO were applied for deep treatment of the effluence from sewage treatment plant of printing and dyeing factory. The membrane performances of two kinds of UF membranes with different materials and structure were investigated in detail during the process of pretreatment. At same time, the effluence effects brought by NF and RO were studied. Research results showed UF can effectively remove partial COD as the pretreatment process of NF or RO; PES UF membrane has much better comprehensive performances than PVC UF membrane; comparing to RO, NF membrane has higher flux and a bit worse water quality while its operating pressure is low; although NF membrane presents lower removal rate for univalent ions than RO membrane, both of these membrane technologies have close removal rates to bivalent ions. |
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