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Local calibration of coliforms parameters of water quality problem at Igapó I Lake, Londrina, Paraná, Brazil

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  • Romeiro, Neyva M.L.
  • Castro, Rigoberto G.S.
  • Cirilo, Eliandro R.
  • Natti, Paulo L.

Abstract

This article presents results concerning the local calibration of the transport parameters (longitudinal and transversal diffusions and decay coefficient) for a two-dimensional problem of water quality at Igapó I Lake, located in Londrina, Paraná, Brazil, using fecal coliforms as an indicator of water quality. The simulation of fecal coliforms concentrations all over the water body is conducted by means of a structured discretization of the geometry of Igapó I Lake, together with the finite difference and finite element methods. By using the velocity field, modeled by the Navier–Stokes and Poisson equations, the flow of fecal coliforms is described by means of a transport model, which considers advective and diffusive processes, as well as a process of fecal coliforms decay. In the checkpoint, the longitudinal and transversal diffusion coefficients and the coliforms decay coefficient that best fitted the value of the fecal coliforms concentration were Dx=Dy=0.001m2/h and k=0.5d−1=0.02083h−1. A qualitative and quantitative analysis of the numerical simulations conducted in function of the diffusion coefficients and of the coliforms decay parameter provided a better understanding of the local water quality at Igapó I Lake.

Suggested Citation

  • Romeiro, Neyva M.L. & Castro, Rigoberto G.S. & Cirilo, Eliandro R. & Natti, Paulo L., 2011. "Local calibration of coliforms parameters of water quality problem at Igapó I Lake, Londrina, Paraná, Brazil," Ecological Modelling, Elsevier, vol. 222(11), pages 1888-1896.
    • Handle: RePEc:eee:ecomod:v:222:y:2011:i:11:p:1888-1896
    DOI: 10.1016/j.ecolmodel.2011.03.018
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    References listed on IDEAS

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    1. Couto, Paula R.L. & Malta, Sandra M.C., 2008. "Interaction between sorption and biodegradation processes in the contaminant transport," Ecological Modelling, Elsevier, vol. 214(1), pages 65-73.
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    Cited by:

    1. Juan G. Loaiza & Jesús Gabriel Rangel-Peraza & Antonio Jesús Sanhouse-García & Sergio Alberto Monjardín-Armenta & Zuriel Dathan Mora-Félix & Yaneth A. Bustos-Terrones, 2021. "Assessment of Water Quality in A Tropical Reservoir in Mexico: Seasonal, Spatial and Multivariable Analysis," IJERPH, MDPI, vol. 18(14), pages 1-20, July.

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