Diagnóstico da situação do Rio Paraopeba após lançamento de rejeitos de mineração

Abstract

This paper presentes a brief diagnosis of the Paraopeba River situation after the rupture of the Feijão Stream ore tailings dam on 01/25/2019. The monitoring data used to composse this diagnosis were obtained from the set of documents from Mining Institute of water management, Mineral Resources Research Company and SOS Mata Atlantica. Five water quality parameters were analyzed: temperature, pH, eletrical conductivity, dissolved oxygen and turbidity, as well as the concentration of metals in the water. The final analysis of obtained data showed that the waters of the Paraopeba river basin are inappropriate for use, especially due, to the high levels of turbidity in the flood period. Although the DO levels do not conform to the legal limits, this parameter responds slowly to the polluting load. However, the presence of sediments and metals in the riverbed alters the basic conditions of river flow responsible for ecosystem processes.