Evaluation of marine outfall with three-dimensional hydrodynamic and water quality modeling |
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| Authors: | Wen-Cheng Liu Jan-Tai Kuo Chih-Chieh Young Ming-Ching Wu |
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| Institution: | (1) Department of Civil and Disaster Prevention Engineering, National United University, Miao-Li, 36003, Taiwan;(2) Department of Civil Engineering, National Taiwan University, Taipei, 10617, Taiwan;(3) Department of Safety, Health and Environmental Engineering, Lan Yang Institute of Technology, I Lan, 261, Taiwan |
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| Abstract: | Numerical models are often used to evaluate the potential impact of human alternation of natural water bodies and to help
the design of the alternation to mitigate its impacts. In the past decade, three-dimensional hydrodynamic and reactive transport
modeling has matured from a research subject to a practical analysis technology. This paper presents a practical study in
which a three-dimensional hydrodynamic and water quality model hydrodynamic eutrophication model (HEM-3D)] was applied to
determine the optimal location for treated wastewater discharged from marine outfall system in the Keelung harbor and the
adjacent coastal sea. First, model validation was conducted with respect to surface elevation, current, and water quality
variables measured in the Keelung harbor station and its coastal sea. The overall performance of the model was in qualitative
agreement with the available field data. The model was then used to evaluate several scenarios of the locations from marine
outfall system. Based on model simulation results, a location at the northeast of Ho-Ping Island was recommended for adoption
because the environmental impact is smaller than any other alternative.
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| Keywords: | hydrodynamic and water quality Keelung harbor and coastal sea marine outfall model validation wastewater discharge |
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