Tratamento de dados hidroquímicos dos aquíferos do município de Rio Claro (SP) e adjacências

• Autor(a) principal: Quirino, Raquel Curtolo [UNESP]
• Data de Publicação: 2016
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/155440; http://www.athena.biblioteca.unesp.br/exlibris/bd/capelo/2017-06-05/000883460.pdf
• topic: Aquiferos; Química da água; Águas subterrâneas; Groundwater; Rio Claro (SP)

Aquifers are essential for the maintenance of the water cycle and its use as water supply in the State of São Paulo has been increasing every year. The main purpose of hydrochemical studies is to identify and quantify major components based on the final destination of groundwater. Therefore, a detailed study of groundwater elements is necessary to stablish their relation with biological and anthropic processes. The aquifers that occurs in the Rio Claro region are Serra Geral, Tubarão, Guarani and Passa Dois aquiclude, and the geological context of these aquifers is the Paraná sedimentary basin. The hydrochemical data were selected from previous research within the area and The Geochemist's Workbench 11.0 and Microsoft Excel 2013 were the softwares used for the hydrochemical and statistical data treatment, respectively. The physical and physical-chemical parameters were selected from the basic composition of groundwaters and from the main drinking water standards required by CETESB and Ministry of Health. For the classification of the sampled water, columnar, Piper, Stiff and Durov diagram were produced and the statistic results were arranged in tables and box plot graphs. Generally, the samples of the chosen aquifers in this study consist in a sodium chlorosulphate-rich type water according to the graphs obtained. For most of them, the cationic concentration is observed by sodium dominance whilst sulphate concentration represents the anionic part. The sampled wells indicate a possible mixing between different aquifer water supplies. The samples usually meet the standards for drinking water required by regulatory institutions, with exception for high levels of nitrate associated to anthropic events in the region