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Comparison of pretreatments on nanofiltration performance and membrane fouling

Authors： ZHANG Quan, GUO Xi, DONG Wenyi, HAN Rubing

Units： 1.Harbin Institute of Technology Shenzhen Graduate School, Shenzhen, 518055. 2. Harbin Institute of Technology School of Municipal and Environmental Engineering, Harbin, 150090

KeyWords： nanofiltration；pretreatment；fouling

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2014,34(1):82-86

Abstract：

Pretreatment played an important role in nanofiltration process. A comparison of coagulation, activated carbon filtration, biological activated carbon and ultrafiltration was taken to investigate performance of nanofiltration system. This research focused on both the removal of organic mattes, ammonia nitrogen and characteristic of membrane fouling. The results illustrated that removal of organic matters, ultrafiltration membrane> coagulation> biological activated carbon filtration> activated carbon filtration; removal of ammonia nitrogen, biological activated carbon filtration> coagulation>activated carbon filtration>ultrafiltration membrane. As a pretreatment process, ultrafiltration can significantly relieve the pollution process of nanofiltration membrane, while any other pretreatment process couldn’t achieve the same goal when used individually. The following three combinations: coagulation and biological activated carbon filtration, coagulation and ultrafiltration, ultrafiltration and biological activated carbon filtration process could improve performance of pretreatment. The removal rate of organics and ammonia nitrogen could be as high as 70% and 80% respectively.

Funds：

“十一五”水专项（2009ZX07423-003）

AuthorIntro：

张泉（1984-），男，黑龙江省哈尔滨市人，博士生，从事饮用水深度处理技术研究。

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