Performance of Nanofiltration and Reverse Osmosis Membranes in Metal Effluent Treatment

›› 2008, Vol. 16 ›› Issue (3): 441-445.

Performance of Nanofiltration and Reverse Osmosis Membranes in Metal Effluent Treatment

刘飞妮¹, 张国亮¹, 孟琴², 章宏梓²

1. College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou 310014, China;
2. College of Materials Science and Chemical Engineering, Zhejiang University, Hangzhou 310027, China

收稿日期:2007-09-24 修回日期:2008-03-20 出版日期:2008-06-28 发布日期:2008-06-28
通讯作者: ZHANG Guoliang ,E-mail:guoliangz@zjut.edu.cn
基金资助:
Supported by the National Natural Science Foundation of China (20476096,20776133);Zhejiang Provincial Bureau of Science & Technology (2005C33040);Bureau of Education (Key Discipline of Environmental Engineering 56310503014)

Performance of Nanofiltration and Reverse Osmosis Membranes in Metal Effluent Treatment

LIU Feini¹, ZHANG Guoliang¹, MENG Qin², ZHANG Hongzi²

1. College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou 310014, China;
2. College of Materials Science and Chemical Engineering, Zhejiang University, Hangzhou 310027, China

Received:2007-09-24 Revised:2008-03-20 Online:2008-06-28 Published:2008-06-28
Supported by:
Supported by the National Natural Science Foundation of China (20476096,20776133);Zhejiang Provincial Bureau of Science & Technology (2005C33040);Bureau of Education (Key Discipline of Environmental Engineering 56310503014)

摘要/Abstract

摘要： The performance of different nanofiltration(NF)and reverse osmosis(RO)membranes was studied in treating the toxic metal effluent from metallurgical industry.The characteristics and filtration behavior of the processes including the wastewater flux,salt rejection and ion rejection versus operating pressure were evaluated.Then the wastewater flux of RO membrane was compared with theoretical calculation using mass transfer models,and good consistency was observed.It was found that a high rejection rate more than 95% of metal ions and a low Chemical Oxygen Demand(COD)value of 10 mg·L^-1 in permeate could be achieved using the RO composite membrane,while the NF rejection of the salt could be up to 78.9% and the COD value in the permeate was 35 mg·L^-1. The results showed that the product water by both NF and RO desalination satisfied the State Reutilization Qualification,but NF would be more suitable for large-scale industrial practice,which offered significantly higher permeate flux at low operating pressure.

关键词: nanofiltration, reverse osmosis, metal effluent, reuse

Abstract: The performance of different nanofiltration(NF)and reverse osmosis(RO)membranes was studied in treating the toxic metal effluent from metallurgical industry.The characteristics and filtration behavior of the processes including the wastewater flux,salt rejection and ion rejection versus operating pressure were evaluated.Then the wastewater flux of RO membrane was compared with theoretical calculation using mass transfer models,and good consistency was observed.It was found that a high rejection rate more than 95% of metal ions and a low Chemical Oxygen Demand(COD)value of 10 mg·L^-1 in permeate could be achieved using the RO composite membrane,while the NF rejection of the salt could be up to 78.9% and the COD value in the permeate was 35 mg·L^-1. The results showed that the product water by both NF and RO desalination satisfied the State Reutilization Qualification,but NF would be more suitable for large-scale industrial practice,which offered significantly higher permeate flux at low operating pressure.

Key words: nanofiltration, reverse osmosis, metal effluent, reuse

刘飞妮, 张国亮, 孟琴, 章宏梓. Performance of Nanofiltration and Reverse Osmosis Membranes in Metal Effluent Treatment[J]. , 2008, 16(3): 441-445.

LIU Feini, ZHANG Guoliang, MENG Qin, ZHANG Hongzi. Performance of Nanofiltration and Reverse Osmosis Membranes in Metal Effluent Treatment[J]. , 2008, 16(3): 441-445.

参考文献

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Performance of Nanofiltration and Reverse Osmosis Membranes in Metal Effluent Treatment

Performance of Nanofiltration and Reverse Osmosis Membranes in Metal Effluent Treatment

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