Modelagem da qualidade da água em um trecho do rio dos Bois, Goiás
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2018-03-01
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Universidade Federal de Goiás
Resumo
Water modeling is a great tool for water resources management, since it allows a simulation of
future water sources, better defining the capacity of assimilation through the limits of source
releases for extractions of certain fugacies to subsidize the licensing of service with the
competent entities. Thus, the main objective of the present work was the model for dissolved
oxygen (DO), biochemical oxygen demand (BOD), pH, temperature, organic nitrogen (Norg)
and ammoniacal nitrogen (NH4) through numerical simulations with the The QUALQKW e
evaluates the quality of dry blood dry-larvae of zebrafish (Danio rerio) in a stretch of the BoisGoiás
river, to verify how the water quality conditions of the study stretch with the quality
classes of the solution CONAMA 357/2005. "In order to do so, the quality monitoring data and
the hydraulic nature of the study were obtained in four years, in October and November of 2015
and in January and March of 2016, thus, the input data for the QUAL2Kw model. the two
campaigns were carried out in February and September 2017 to conduct the ecotoxicity tests
and the physical-chemical and microbiological results as well as trace metal analysis. In
general, the calibration parameters are adjustable, especially for a solution of The date is most
recent in 2015, where OD accounts persist below 5 mg / L over a long stretch and the BOD and
NH4 also do not conform to the legal approach of CONAMA Resolution 357/05 In most of the
series, BOD remained above 5 mg / L for at least 5 km in length, disagree with the legislation
for exceeding the distance of the mixing zone, located on average at 1.5 ± 0.5 km from the point
of l In the second half of 2015, uncertainty analyzes were performed for the OD, where only
9.4% of the simulations are more important than 5 mg / L and sensitivity analyzes by the Monte
Carlo Simulation. the coefficient of deoxygenation and reapersion, in each of the sample
channels, evidencing a significance of the reuse coefficient in the determination of OD
concentrations. The quality and the ecotoxicity of the water of the section studied in February
and September of 2017, after the effluent discharge point, was carried out in some of its
parameters of water and some metals during the year as a whole, iron, lead and water. Cancer,
and consequently, the success of seafood in the development of zebrafish embryos. Thus, the
present work was done with the model QUAL2Kw presented as a good tool for the execution
of nominal tests in the value of 0,808 ± 0,005 for all the sample management. The Monte Carlo
uncertainty analysis demonstrates that it is possible to present the results in a probabilistic way,
knowing or assuming risks that are disregarded by the deterministic approach.
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SOARES, S. S. Modelagem da qualidade da água em um trecho do rio dos Bois, Goiás. 2018. 106 f. Dissertação (Mestrado em Engenharia Ambiental e Sanitária) - Universidade Federal de Goiás, Goiânia, 2018.