Study of flow and dispersion of pollutants in the Igapó I Lake

Details Study of flow and dispersion of pollutants in the Igapó I Lake Study of flow and dispersion of pollutants in the Igapó I Lake

2010-07-29

arxiv.org/abs/1007.5296v1

Physics

Atmospheric and Oceanic Physics

In Portuguese. Conference: II Semin\'ario Nacional Sobre Regenera\c{c}\~ao Ambiental de Cidades, 2007, Londrina, Paran\'a, Bra

Scientific paper

This work proposes a mathematical model on the water quality for Igap\'o I Lake, located in Londrina, Paran\'a. A qualitative analysis on the pollution of the lake is carried out through numerical simulations which provide informations for the understanding of the processes involved. For the hydrodynamic flow of the lake, a horizontal two-dimensional model is considered. The hydrodynamic velocity field is simulated by the Navier-Stokes and pressure equations, supposing an incompressible newtonian fluid. This hydrodynamic velocity field is inserted in the reactive-transport model. The reactive part of this model considers only the carbon-nitrogen cycle, described by the QUAL2E model. A qualitative and quantitative analysis of the numerical simulations conducted in function of the deficit of dissolved oxygen, of the biochemical oxygen demand and of the load of pollutants provided a better understanding of the hydrology and of the water quality in the Igap\'o I Lake.

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