Commenced in January 2007
Paper Count: 30169
Analytical Model for Brine Discharges from a Sea Outfall with Multiport Diffusers
Authors: Anton Purnama
Abstract:Multiport diffusers are the effective engineering devices installed at the modern marine outfalls for the steady discharge of effluent streams from the coastal plants, such as municipal sewage treatment, thermal power generation and seawater desalination. A mathematical model using a two-dimensional advection-diffusion equation based on a flat seabed and incorporating the effect of a coastal tidal current is developed to calculate the compounded concentration following discharges of desalination brine from a sea outfall with multiport diffusers. The analytical solutions are computed graphically to illustrate the merging of multiple brine plumes in shallow coastal waters, and further approximation will be made to the maximum shoreline's concentration to formulate dilution of a multiport diffuser discharge.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1074565Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 2622
 S. Lattemann, and T. Hopner, "Environmental impact and impact assessment of seawater desalination," Desalination, vol. 220, pp. 1-15, 2008.
 C. Sheppard, M. Al-Husiani, F. Al-Jamali, F. Al-Yamani, R. Baldwin, J. Bishop, F. Benzoni, E. Dutrieux, N.K. Dulvy, S.R.V. Durvasula, D.A. Jones, R. Loughland, D. Medio, M. Nithyanandan, G.M. Pilling, I. Polykarpov, A.R.G. Price, S. Purkis, B Riegl, M. Saburova, K.S. Namin, O. Taylor, S. Wilson, and K. Zainal, "The Gulf: A young sea in decline, " Marine Pollution Bulletin, vol. 60, pp. 13-34, 2010.
 D.A. Roberts, E.L. Johnston, and N.A. Knott, "Impacts of desalination plant discharges on the marine environment: A critical review of published studies," Water Research, vol. 44, pp. 5117-5128, 2010.
 A. Purnama, H.H. Al-Barwani, T. Bleninger, and R.L. Doneker, "CORMIX simulations of brine discharges from Barka plants, Oman," Desalination and Water Treatment, vol. 31, pp. 1-10, 2011.
 T. Bleninger, and G.H. Jirka, "Modelling and environmentally sound management of brine discharges from desalination plants," Desalination, vol. 221, pp. 585-597, 2008.
 M. Barry and T. McAlister, "A comment on the application of numerical hydrodynamic models to simulate brine discharges," Desalination and Water Treatment, (to be published) 2010.
 G.H. Jirka, "Integral model for turbulent buoyant jets in unbounded stratified flows. Part 2: Plane jet dynamics resulting from multiport diffuser jets," Environmental Fluid Dynamics, vol. 6, pp. 43-100, 2006.
 P.J.W. Roberts, and X. Tian, "New experimental techniques for validation of marine discharge models," Environmental Modelling & Software, vol. 19, pp. 691-699, 2004.
 H.H. Al-Barwani, and A. Purnama, "Analytical solutions for brine discharge plumes on a sloping beach," Desalination and Water Treatment, vol. 11, pp. 2-6, 2009.
 H.H. Al-Barwani, and A. Purnama, "Simulating brine plumes discharged into the seawaters," Desalination, vol. 221, pp. 608-613, 2008.
 A. Kay, "Advection-diffusion in reversing and oscillating flows: 1. The effect of a single reversal," IMA Journal of Applied Mathematics, vol. 45, pp. 115-137, 1990.
 A. Purnama, and A. Kay, "Effluent discharges into tidal waters: optimal or economic strategy?," Environmetrics, vol. 10, pp. 601-624, 1999.
 W.E. Johns, G.A. Jacobs, J.C. Kindle, S.P. Murray, and M. Carron, Arabian Marginal Seas and Gulfs, Technical Report 2000-01, RSMAS, University of Miami, 2000, (http://www.rsmas.miami.edu/personal/zantopp/AMSG-report.html).
 R. Smith, and C.F. Scott, "Mixing in the tidal environment," Journal of Hydraulic Engineering, ASCE, vol. 123, pp. 332-340, 1997.
 I.S. Gradshteyn, and I. Ryzhik, "Tables of Integrals, Series and Products," Academic Press, London, UK, 1980.