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The mining company Vale, responsible for the dam that erupted on January 25 in Brumadinho (MG), killing at least 115 people, installed this first membrane on the Paraopeba River on Saturday, February 2. According to the information disclosed by the company, the barrier was placed near the watershed of the city of Pará de Minas, about 40 kilometers from Brumadinho.
According to Vale, the capture system of Pará de Minas will be protected by three barriers of retention. The other two must be installed tomorrow. "The company emphasizes that it is a precautionary measure, to ensure the water supply of the municipality continuously," the report said.
The installation is planned in the containment and recovery plan presented on the 30th to the Public Ministry. and environmental agencies. The measures aim to mitigate the effects of the environmental disaster in three parts, that of Pará de Minas in the third, located between Juatuba and Usina de Retiro Baixo. According to studies, the site has "the potential to receive ultra-fine sediments."
The containment barrier has a length of 30 meters and a depth of two to three meters. The structure of the filter fabric avoids the dispersion of solid particles, such as clay, silt and organic matter, which result in turbidity of the water.
The curtains contain metal chains in the submerged part, which allows the fabric to remain upright even the flow of the river. A cylindrical float is on the surface, which helps to contain the elements in suspension in the water.
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