Numerical simulation of BOD5 dynamics in Igapó I lake, Londrina, Paraná, Brazil: Experimental measurement and mathematical modeling

Numerical simulation of BOD5 dynamics in Igapó I lake, Londrina, Paraná, Brazil: Experimental measurement and mathematical modeling

Authors

  • Neyva Maria Lopes Romeiro Universidade Estadual de Londrina
  • Fernanda Bezerra Mangili Universidade Estadual de Londrina
  • Ricardo Nagamine Costanzi Universidade Tecnológica Federal do Paraná
  • Eliandro Rodrigues Cirilo Universidade Estadual de Londrina
  • Paulo Laerte Natti Universidade Estadual de Londrina http://orcid.org/0000-0002-5988-2621

DOI:

https://doi.org/10.5433/1679-0375.2017v38n2p50

Keywords:

Numerical simulation, curvilinear coordinate, finite difference method, finite element method, biochemical oxygen demand dynamics

Abstract

The concentration of biochemical oxygen demand, BOD5, was studied in order to evaluate the water quality of the Igapó I Lake, in Londrina, Paraná State, Brazil. The simulation was conducted by means of the discretization in curvilinear coordinates of the geometry of Igapó I Lake, together with finite difference and finite element methods. The evaluation of the proposed numerical model for water quality was performed by comparing the experimental values of BOD5 with the numerical results. The evaluation of the model showed quantitative results compatible with the actual behavior of Igapó I Lake in relation to the simulated parameter. The qualitative analysis of the numerical simulations provided a better understanding of the dynamics of the BOD5 concentration at Igapó I Lake, showing that such concentrations in the central regions of the lake have values above those allowed by Brazilian law. The results can help to guide choices by public officials, as: (i) improve the identification mechanisms of pollutant emitters on Lake Igapó I, (ii) contribute to the optimal treatment of the recovery of the polluted environment and (iii) provide a better quality of life for the regulars of the lake as well as for the residents living on the lakeside.

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Author Biography

Paulo Laerte Natti, Universidade Estadual de Londrina

Departamento de Matematica - Matemática Aplicada

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Published

2017-12-23

How to Cite

Romeiro, N. M. L., Mangili, F. B., Costanzi, R. N., Cirilo, E. R., & Natti, P. L. (2017). Numerical simulation of BOD5 dynamics in Igapó I lake, Londrina, Paraná, Brazil: Experimental measurement and mathematical modeling. Semina: Ciências Exatas E Tecnológicas, 38(2), 50–58. https://doi.org/10.5433/1679-0375.2017v38n2p50

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Section

Original Article

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