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Pollutant dispersion modelling for Portuguese water uses protection linked to tracer dye experimental data

Title
Pollutant dispersion modelling for Portuguese water uses protection linked to tracer dye experimental data
Type
Article in International Scientific Journal
Year
2008
Authors
António A. S. Duarte
(Author)
Other
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Rui Boaventura
(Author)
FEUP
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Journal
Vol. 4 No. 12
Pages: 1047-1056
ISSN: 1790-5079
Publisher: WSEAS Press
Indexing
Publicação em Scopus Scopus
INSPEC
Scientific classification
FOS: Engineering and technology
CORDIS: Natural sciences > Environmental science
Other information
Abstract (EN): The present work describes the methodology used in the monitoring programs, basically consisting in the injection of a tracer dye (rhodamine WT) in an upstream river section and follow-up of the dye cloud along the river to determine the water dispersion behaviour in situ. The models were developed to simulate different water quality management scenarios on each reach of the three Portuguese rivers under study: Mondego, Douro and Tagus rivers. However, further developments are needed for Douro and Tagus rivers in order to simulate vertical and transversal dispersion processes and improve the model correlation with the experimental data. The models were calibrated and validated in order to produce operational tools used to estimate the probabilistic leading edge/peak/tail times, the pollutant losses by volatilization, adsorption, precipitation, etc. and remaining concentrations. These tools allows to define, for example, how long water intake need to be suspended after a pollutant spill and can be easily integrated in a future DSS, which should be developed and implemented by each one of the river basin management authorities. The good correlation between experimental and simulated data allows us to conclude that the applied models are accurate enough to describe and predict conservative pollutant transport under different hydrodynamic scenarios. This methodology is appropriate to assess the environmental impact of pollutant loads directly introduced into the streams and, subsequently, to define and implement the best water sources protection practices.
Language: Portuguese
Type (Professor's evaluation): Scientific
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