The Effect of Different Pretreatment Methods on the Membrane Fouling in the Process of Reverse Osmosis Seawater Desalination

Abstract:

One new pretreatment method was developed for solving the formed fouling on the equipments in the process of reverse osmosis seawater desalination, and the effect of different pretreatment methods on the membrane fouling was investigated. The experiment results showed that the flux attenuation rate of reverse osmosis membrane used in hardness-removed seawater was slower than the one of direct ultrafiltration seawater, and the salt reject rate and conductivity of output water from reverse osmosis membrane were not obviously affected by these two different pretreatment methods respectively. By according to the characterization of SEM, EDX and IR, the rapid attenuation of membrane flux was caused by the piled inorganic crystals on the membrane surface in direct ultra-filtration process, and the hardness-removed pretreatment process can effectively decrease the membrane fouling.

• Periodical: Advanced Materials Research (Volumes 821-822)
• Pages: 1102-1109
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.821-822.1102
• Online since: September 2013
• Authors: Jian Gao Cheng*, Jing Huan Ma, Zhi Wen Lin, Wei Xing Li, Zhan Sheng Ma, Qing Tong Ren, Ying Liu
• Keywords: Hardness-Removed Pretreatment, Inorganic Salt, Membrane Fouling, Reverse Osmosis

References

[1] Shichang Wang. International Academic Developments, 1997, （1）p.13. (in Chinese).

[2] General Office of the State Council. The policy to accelerate the development of seawater desalination. 2012 (in Chinese).

[3] Kai Xing. Study on membrane fouling of combined MBR-RO system. Tianjin: School of Environment Science and Engineering, Tianjin University, 2010（in Chinese）.

[4] Ganlin Huang, Zhenliang Xu. The World of Chemistry, 2002, p.83. (in Chinese).

[5] Zhanping Cao, Jingli Zhang. Technology of Water Treatment, 2008, 34（2）, p.60 (in Chinese).

[6] Tora J M. Desalination，2001，139：381.

[7] Q. Li and M. Elimelech. Environ. Sci. Technol., 2004, p.4683.

[8] N. Oschmann, D.L. Nghiem and A. Schäfer. Desalination, 2005, (179), p.215.

[9] E. -m. Gwon, M. -j. Yu, H. -k. Oh and Y. -h. Ylee. Water Res., 2003，(37), p.2989.

[10] L.D. Nghiem, A.I. Schäfer. Desalination, 2006 (188) p.113.

[11] M.G. Khedr. Desalination and Water Reuse, 2000，10 (3), p.8.

[12] Jinghuan Ma, Jinyan Huang, Jingrui Qin. Journal of Salt and Chemical Industry, 2006, 35（6）, p.13(in Chinese).

[13] Jinghuan Ma, Jingrui Qin, Jinyan Huang. Sea-Lake Salt and Chemical Industry, 2005, 35（2）, p.29(in Chinese).

[14] Jinghuan Ma, Jingrui Qin, Jinyan Huang, etal. Tianjin Chemical Industry, 2007, 21（2）, p.26(in Chinese).

[15] Yuhong Wang, Baowei Su, Jia Xu, etal. Industrial Water Treatment, 2006, 26（2）, p.46 (in Chinese).

[16] Baowei Su, Yue Wang, Zhi Wang, etal. China Water & Wastewater, 2003，19（8）, p.30 (in Chinese).

[17] Biqing Shi, Yulian Quan, Xiang Liu. Light Industry Science and Technology, 2012, 162(5), p.87 (in Chinese).

[18] Merrilee A. ，James M. Membrane Technology, 2004, (1), p.5.

[19] Bu Sha. Experimental Research on Membrane Reactor for Seawater Pretreatment and Surface Water Treat-ment[D]. Tianjin: School of Environment Science and Engineering, Tianjin University, 2010（in Chinese）.

[20] Beijing may use water by desalination after a couple of years. Guangzhou Daily[N], 2012-5-22, (8) （in Chinese）.

[21] Wui Seng Ang, Sangyoup Lee, Menachem Elimelech. Journal of Membrane Science, 2006, 272(1-2), p.198.

[22] Wui Seng Ang, Menachem Elimelech. Journal of Membrane Science, 2007, 296(1-2), p.83.