DOI: 10.5176/2251-1911_CMCGS18.20
Authors: Anton Purnama, Huda A. Al-Maamari, E. Balakrishnan
Abstract: Discharging wastewater effluents through long sea outfalls is an economical and reliable disposal option for coastal industrial plants. The interactions of two or more effluent discharge plumes are expected as many outfalls often tend to be built closely together along the open coastlines. A far-field model using a two-dimensional advection-diffusion equation with two point sources in a simple step seabed is presented. Solutions are illustrated graphically by plotting contours of concentration to simulate the mixing and dispersion of the effluent discharge plumes. The maximum compounded shoreline concentration is formulated and used as a measure for assessing the quality standards of coastal waters. It is found that the modern engineering practice which installs a two-port diffuser at the end of the outfall pipeline does produce low potential environmental impact.
Keywords: advection-diffusion equation; environmental impact assessment; method of image; shoreline concentration; two-port diffuser
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