全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

颗粒物粒径和有机物分子量对超滤膜污染的影响

Keywords: 超滤膜,膜污染,颗粒物,粒径,有机物,分子量

Full-Text   Cite this paper   Add to My Lib

Abstract:

采用不同孔径和截留分子量的膜对原水进行预过滤,研究不同粒径的颗粒物和不同分子量的有机物对膜污染的影响。结果表明,随着预过滤膜孔径或截留分子量的减小,原水中浊度、CODMn、DOC和UV254的去除率逐渐提高,超滤膜运行的跨膜压力(TMP)比直接过滤原水时降低;经孔径为1.2μm和0.45μm的膜预过滤后,超滤膜运行的TMP仍上升较快,而经过截留分子量为100kDa及以下膜预过滤后,膜污染比较缓慢。对膜阻力构成分析的结果表明,随着预过滤膜孔径或截留分子量的减小,超滤膜运行过程中的表面饼层阻力逐渐减小,堵孔阻力也有明显降低,但预膜滤不能有效降低膜的吸附阻力。超滤膜表面的扫描电镜观察结果表明,经过截留分子量在100kDa及以下的膜预过滤后,超滤膜表面比较干净,此时的膜过滤阻力主要来源于吸附和堵孔阻力。

References

[1]  王磊, 王旭东, 刘莹, 等. 臭氧预氧化对城市二级处理水中残留有机物分子量分布的影响及超滤膜阻力变化分析. 膜科学与技术, 2006, 26(2): 27-31 Wang Lei, Wang Xudong, Liu Ying, et al. Study on the effect of ozone oxidation on molecular size distribution of the secondary ef fluent and membrane resistance. Membrane Science and Technology, 2006, 26(2): 27-31 (in Chinese)
[2]  Oha H., Yu M., Takizawa S., et al. Evaluation of PAC behavior and fouling formation in an integrated PAC-UF membrane for surface water treatment. Desalination, 2006, 192 (2): 54-62
[3]  Campos C., Schimmoller L., Marins B. J., et al. Adding PAC to remove DOC. J. AWWA, 2000, 92 (2): 69-83
[4]  Pirbazari M., Badriyha B. N., Ravindran V. MF-PAC for treating waters contaminated with natural and synthetic organics. J. AWWA, 1992, 84 (3): 95-103
[5]  张国俊, 刘忠洲. 膜过程中超滤膜污染机制的研究及其防治技术进展. 膜科学与技术, 2001, 21(4): 39-45 Zhang Guojun, Liu Zhongzhou. Development of the mechanism and the controlled technique of ultrafiltration membrane fouling. Membrane Science and Technology, 2001, 21(4): 39-45 (in Chinese)
[6]  Li Q. L., Elimelech M. Synergistic effects in combined fouling of a loose nanofiltration membrane by colloidal materials and natural organic matter. J. Membr. Sci., 2006, 278(1-2): 72-82
[7]  Li X. Y., Chu H. P. Membrane bioreactor for the drinking water treatment of polluted surface water supplies. Water Res., 2003, 37(19): 4781-4791
[8]  Nystrtm M., Kaipia L., Luque S. Fouling and retention of nanofiltration membranes. J. Membrane Sci., 1995, 98 (3): 249-262
[9]  Adin A. Particle count and size alteration for membrane fouling reduction in non-conventional water filtration. Water Sci. Technol., 2004, 50(12): 273-278
[10]  Kalya Y., Itoh Y., Fujita K., et al. Study on fouling materials in the membrane treatment process for potable water. Desalination, 1996, 106 (1-3): 71-77
[11]  Kweon J. H., Lawler D. F. Investigation of membrane fouling by synthetic and natural particles. Water Sci. Technol., 2004, 50(12): 279-285
[12]  Amy G. Fundamental understanding of organic matter fouling of membranes. Desalination, 2008, 231(1-3): 44-51
[13]  董秉直, 曹达文, 范瑾初, 等. UF 膜过滤天然原水阻力特性的研究. 水处理技术, 2001, 27(2): 80-83 Dong Bingzhi, Cao Dawen, Fan Qinchu, et al. The characteristics of resistance in filtering natural raw water by UF process. Technology of Water Treatment, 2001, 27(2): 80-83 (in Chinese)
[14]  Zhang W., Zhang W., Zhang X. Z. Characterization of dissolved organic matters responsible for ultrafiltration membrane fouling in algal harvesting. Algal Research, 2013, 2(3): 223-229
[15]  Wei C., Min L., Tao L. Molecular weight distribution of organics during drinking water treatment. J. PLA Univ. Sci. Technol., 2009, 2 (1): 160-164
[16]  Lin C. F., Huang Y. J., Hao O. J. Ultrafiltation processes for removing humic substances: effect of molecular weight fractions and PAC treatment. Water Res., 1999, 33 (2): 1252-1264

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133