对比了混凝、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对纳滤工艺整体性能的影响;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.
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(01):22-26. |
| [2] | Li W;Li J .Study on nanofiltration for purifying fructo oligosaccharides Ⅱ.Extended pore model[J].Journal of Membrane Science,2011,258(01):8-15. |
| [3] | Ahmed Saleh Al-Amoudi .Factors affecting natural organic matter (NOM) and scaling fouling in NF membranes: A review[J].Desalination: The International Journal on the Science and Technology of Desalting and Water Purification,2010(1/3):1-10. |
| [4] | Bowman C N .Membrane fouling reduction by back pulsing and surface modification[J].Journal Membrane Science,2007,173(02):191-200. |
| [5] | 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. |
| [6] | LINHUA FAN;JOHN L. HARRIS;FELICITY A. RODDICK .INFLUENCE OF THE CHARACTERISTICS OF NATURAL ORGANIC MATTER ON THE FOULING OF MICROFILTRATION MEMBRANES[J].Water research: A journal of the international water association,2001(18):4455-4463. |
| [7] | Lee S;Cho JW;Elimelech M .Combined influence of natural organic matter (NOM) and colloidal particles on nanofiltration membrane fouling[J].Journal of Membrane Science,2005(1/2):27-41. |
| [8] | 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. |
| [9] | 孙海梅,武道吉,石峰,马悠怡.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(03):41-45. |
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