Avaliação da qualidade da água do Rio Brilhante/MS por meio de parâmetros físico-químicos

Abstract

Rivers are the main sources of drinking water for the human supply, its use ranges from domestic to industrial and agricultural use. However, natural and mainly anthropogenic actions caused by the misuse of water have been causing changes in water resources, and for the proper functioning and conservation, it is necessary evaluation and studies for the water quality, controlling the amount of impurities it may contain, and thus its use is permitted. The objective of this work was to carry out physical-chemical monitoring of the water quality of the Brilhante River, in the city of Rio Brilhante/MS and also determine the concentrations of metals that may be present. The study period comprehended 6 collections, carried out between June and November 2022, evaluating the physical-chemical parameters: temperature, pH, consumed oxygen (organic matter), total acidity, total alkalinity, chloride, hardness, turbidity, and total dissolved solids, in addition to metals zinc, aluminum, lead and iron. In general, the average concentrations obtained for the physical-chemical variables did not exceed the limits recommended by the Resolution 357/2005 of CONAMA for Class 2 waters, at all points, only the oxygen consumed presented levels above what is allowed. Metals resulted in levels above the established for lead, iron and aluminum, geological factors and urban pollution explain this change. Zinc concentrations were not found at the collection points.