Classificação hidroquímica das águas subterrâneas do Aquífero Serra Geral na porção centro norte do estado de São Paulo

• Autor(a) principal: Faracini, Júlia Cristina Bonani [UNESP]
• Data de Publicação: 2013
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/118969
• topic: Águas subterrâneas; Quimica da agua; Hidrogeologia; Aquífero Serra Geral

Increasing demands for water to supply human consumptions becomes groundwater an important source in water budget in many parts of the world, since in comparison with surface water exploitation; groundwater presents several advantages, such as their water quality and economic cost for extraction and treatment. In this sense basalts of Serra Geral Formation constitute an important aquifer in their occurrence area. In the north central region of São Paulo state groundwater from Serra Geral Aquifer (SGA) are responsible for water supply in numerous cities settled over this unit. In order to improve the knowledge about the hydrogeochemical process, and get the chemical classification of their groundwater, 25 groundwater were sampling, 22 of which were collected in wells drilled in the SGA and 3 were collected in wells drilled on the Guarani Aquifer System. These data allowed the hydrochemistry classification of groundwater from ASG using Piper and Stiff diagrams. Groundwater can be classified into three main hydrochemical groups: Ca-Mg-HCO3 type; Ca-Na- HCO3 type and Na- HCO3 type. Only one sample were classified as Na- HCO3-SO4 type. Hydrochemical facies spatial distribution is consistent with the main groundwater flow directions