Pilot Study of Brackish Water Treatment using Dual Stage Nanofi ltration for Domestic Use in Thu Bon Basin, Vietnam

Document Type : Research Paper

Authors

1 Department of Water supply and Sanitation Faculty of Environmental Engineering National University of Civil Engineering Hanoi, Vietnam

2 Faculty of Environment and Chemical Technology Duy Tan University Da Nang, Vietnam

Abstract

Due to the impact of climate change, the process of salinity intrusion occurs frequently in coastal areas of Vietnam. The main objective of this study is therefore to try diff erent nanofi ltration (NF) processes (such as single-stage and dual-stage NF) to treat brackish water for residential areas in Thu Bon river basin, where the salinity varies signifi cant with seasons. Results have shown that during the rainy season, the salinity was less than 8.5‰, so the single stage NF worked perfectly. When season changes from rainy season to dry season, the river’s salinity increases up to 17.5‰, application of dual NF is most appropriate. This dual NF process not only guarantees the effl uent quality to meet National Technical Regulation, but also off ers reasonable energy cost and fi nally can prolong the membrane lifespan.

Graphical Abstract

Pilot Study of Brackish Water Treatment using Dual Stage Nanofi ltration for Domestic Use in Thu Bon Basin, Vietnam

Keywords

Main Subjects


[1] L. Henthorne, The Current State of Desalination, International Desalination Association, 2016.
[2] M. Wilf, The guide book to Membrane Desalination Technology, Balaban Desalination Publications, 2010.
[3] A. Al-Karaghouli, D. Renne, L.L. Kazmerski, Solar and wind opportunities for water desalination in the Arab regions, Renew Sustain. Energy Rev. 13 (2009) 2397–2407.
[4] R.D. Noble, S.A. Stern. Membrane Separations Technology Principles and Applications, Vol. 2, Elsevier, 1995.
[5] C.J.M Van Rijn, Nano and Micro Engineered Membrane Technology, in: Membrane Science and Technology, Vol. 10, 1st ed., Elsevier, 2004.
[6] A.M. Hassan, M. AK. Al-Sofi, A.S. Al-Amoudi, A.T.M. Jamaluddin, M. Farooque, A. Rowaili, A.G.I. Dalvi, N.M. Kither, G.M. Mustafa, I.A.R. Al-Tisan, A new approach to membrane and thermal seawater desalination processes using NF membranes (Part 1), Int. Desalin. Water Reuse Quarter. 8 (1998) 53-59.
[7] A. AlTaee, A.O. Sharif, Alternative design to dual stage NF seawater desalination using high rejection brackish water membranes, Desalination 273 (2011) 391–397.
[8] Y.A. Le Gouellec, R.C. Cheng, T.J. Tseng, A Novel Approach to Seawater Desalination Using Dual stage d Nanofiltration, IWA Publishing, 2007.
[9] C. Tortajada, Water management in Singapore. Int. J. Water Res. Dev. 22 (2006) 227-240.
[10] C.K. Diawara, Nanofiltration process efficiency in water desalination, Sep. Purif. Rev. 37 (2008) 302-324.
[11] B.M. Misra, P.K. Tewari, B. Bhattacharjee, Futuristic trends in hybrid system for desalination, IDA Conference, San Diego, 1999, p.p. 311-320.
[12] H.D. Tran, H.Q. Nguyen, D.D. Pham, Research on seawater and brackish water treatment for domestic use using NF at lab-scale, J. Sci. Technol. Nation. Uni. Civil Eng. 13 (2012).
[13] QCVN 01: 2009/BYT – Vietnam National Technical Regulation for drinking water purpose, 2009.
[14] H.D. Tran, Application of low-pressure membrane in desalination of seawater in coastal areas and islands of Vietnam, Report of National research project #DTDL.2010T/31, Ministry of Science and Technology, 2012.
[15] A.L. Ahmed, B.S Ooi, A.W. Mohammad, J.P Choudhury, Development of highly hydrophilic nanofiltration membrane for desalination of water treatment, Desalination 168 (2004) 215-221.
[16] F.El Azhar, N. El Harrak, M. El Azhar, M.Hafsi, A. Elmidaoui, Feasibility of nanofiltration process in dual stage in desalination of the seawater, J. Appl. Chem. 5 (2013) 35-42.
[17] J. Luo, Y. Wan, Effect of highly concentrated salt on retention of organic solutes by nanofiltration polymeric membranes, J. Membr. Sci. 372 (2011) 145-153.