预处理方式对纳滤工艺性能及膜污染影响研究
作者:张泉 ,2,郭曦1,董文艺1,韩如冰1
单位: 1.哈尔滨工业大学深圳研究生院,深圳 518055;2.哈尔滨工业大学 市政与环境工程学院 ,哈尔滨150090
关键词: 纳滤膜;预处理;膜污染
分类号: TQ028.8
出版年,卷(期):页码: 2014,34(1):82-86

摘要:
对比混凝、活性炭过滤、生物活性炭过滤、超滤膜过滤几种工艺及其组合作为纳滤膜预处理工艺时,纳滤工艺的整体性能。研究了几种组合工艺对水中总有机物、可生化有机物和氮的去除效果,并分析各自的膜污染特点。结果表明,对水中有机物的去除效果:超滤膜>混凝>生物活性炭过滤>活性炭过滤;对水中氨氮的去除效果:生物活性炭过滤>混凝>活性炭过滤>超滤膜。超滤作为预处理能够有效去除水中有机物,减缓纳滤膜的污染过程,而其它预处理方式单独运用不能有效延缓纳滤膜通量衰减。混凝与生物活性炭组合、混凝与超滤组合以及超滤与生物活性炭组合三种预处理方式能够有效提高预处理过程的效果,有机物和氨氮的去除率分别达到70%和60%以上。
 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.

基金项目:
“十一五”水专项(2009ZX07423-003)

作者简介:
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。

参考文献:
1.张军. 给水处理常规工艺除污染特性初探. [J] . 净水技术,2008,22(1):22-26.
  Li W, Li J. Study on nanofiltration for purifying fructo oligosaccharides II. [J] . Extended pore model. Journal of Membrane Science,2011,258(1):8-15.
2.Saleh A A. Factors affecting natural organic matter (NOM) and scaling fouling in NF membranes: A review. [J]. Desalination,2010,259(1-3):1-10.
3.Bowman C N. Membrane fouling reduction by back pulsing and surface modification. [J] . Journal Membrane Science,2007,173(2):191-200.
4.Sayed S K, Harris J L, Sherkat F. Fouling and cleaning of membranes in the ultrafiltration of the aqueous extract of soy flour. [J]. Journal Membrane Science,2007,114(12):93-104.
5.Fan L, Harris J. Influence of the characteristics of natural organic matter on the fouling of microfiltration membranes. [J] . Water Research,2001,35(18):4455-4463.
6.Lee S, Cho J, Elimelech M. Combined in fluence of natural organic matter (NOM) and colloidal particles on nanofiltration membrane fouling. [J] . Journal Membrane Science,2009,262(5):27-30.
7.Lahoussine T V,Wiesner M R,Botteo J Y.Fouling in tangential—flow uhrafihration:the effect of colloid size and coagulation pretreatment. [J]. Journal of Membrane Science,1990(52):173—190.
8.孙海梅,武道吉,石峰等. 天然有机物对纳滤膜污染的分析与控制.[J]. 山东建筑工程学院学报,2005,(20)3:41-45.

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