Advanced Treatment of Electroplating Wastewater by Nanofiltration Membrane Technology

Abstract:

The nanofiltration (NF) membrane technology presented in this paper were used to treat the industrial electroplating effluent for reutilization, which contained hazardous heavy metal ions such as chromium and zinc. Two different kinds of nanofiltration membranes were applied in pilot scale installation following the conventional wastewater treatment system. The effects of different operating parameters on their separation performance were investigated in detail. Results showed that both two NF membranes held large permeate flux under relatively low operating pressures. The rejection rates of the monovalent ions were less than 50%, while for divalent ions they were more than 90%, including SO₄^2-, Ca²⁺, Cr³⁺ and Zn²⁺. Higher permeate flux, lower operating pressure and distinguished ion selectivity of nanofiltration membranes exhibited a big potential for industrial application concerning the investment and operation cost .

• Periodical: Applied Mechanics and Materials (Volume 378)
• Pages: 318-321
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.378.318
• Online since: August 2013
• Authors: Ling Wang, Xue Feng Xiong, Zheng Fan, Guo Liang Zhang, Zhi Yang Wang
• Keywords: Electroplating Wastewater, Ions Selectivity, Nanofiltration Membrane

References

[1] J. J Qin and M. N Wai: J Membr Sci., Vol. 208 (2002), p.213.

[2] A Hafiane,. D Lemordant,. M Dhahbi,.: Desalination, Vol 130 (2000): p.305.

[3] M. Goel, V. Agrawal, A.K. Kulkarni: J. Membr. Sci. Vol 141(1998), p.245.

[4] M. Okazaki, M. Uraki, K. Miura: Desalination. Vol 131(2000), p.65.

[5] W.R. Zuo, G.L. Zhang, Q. Meng: Desalination. Vol 222(2008) , p.187.

[6] A. Kargol: J. Membr. Sci. Vol 174(2000), p.43.

[7] A. Wahab Mohammad, R. Othaman, N. Hilal: Desalination. Vol 168(2004), p.241.

[8] K.K. Wang, T.S. Chung: J. Membr. Sci. Vol 281(2006), p.307.