Desenvolvimento de um software para classificação hidroquímica de águas subterrâneas

Abstract

In Brazil especially in the state of Paraná, the existence of a database capable of making hydrogeological data and information pertaining to deep tubular wells in aquifers available online is often not enough to create easy compatibility for the user, so tools to assist in this condition are of fundamental importance, highlighting the creation of software that uses the C# language and the IDE Visual Studio. Thus, using this methodology, the GDA was created, which performs sample selection, hydrochemical classification, ionic balance and formulation of Piper and Stiff diagrams. The GDA allowed the collection and treatment of 1954 wells from the Sistema de Informações de Águas Subterrâneas (SIAGAS) and 260 wells from the Instituto Água e Terra (IAT). After removing those whose ion balance error was greater than 10%, 725 and 88 wells were obtained, respectively. The hydrochemical classification of these wells demonstrated the predominance of bicarbonated waters (93.8% in SIAGAS and 89.8% in IAT). Using data from the IAT, the focus was given to 18 municipalities in the Serra Geral Aquifer System (SASG) in the north of the state of Paraná. In this region, the SASG has a predominance of calcium bicarbonated waters (43% of the samples) and when analyzing the Guarani Aquifer System (SAG), only 5 wells were found in the region, all of which were sodium bicarbonated. The patterns found in the Stiff Diagram demonstrated a heterogeneity of the SASG samples as well as a possible exchange of the SAG in the SASG. The software developed, therefore, proved to be a great tool for analyzing, selecting data directly from SIAGAS and classifying them, having functions not found in other tools, enabling the studies carried out. With this, it is hoped that the software can assist researchers in their studies focused on hydrogeological and environmental understanding of aquifers.