A method to describe attenuation of river contamination under peak flows: Can the public water supply from Paraopeba River finally return after the Brumadinho dam disaster? DOI Creative Commons
Glauco de Souza Rolim, Fernando António Leal Pacheco, Renato Farias do Valle

et al.

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 949, P. 174970 - 174970

Published: July 26, 2024

Tailings dams' disasters begin a stage of river water contamination with no endpoint at first sight. But when the was formerly used for public supply and use suspended as consequence dam break, time window safe suspension lift must be anticipated to help managers. The purpose this study seek that moment in case Brumadinho disaster which occurred 2019 injected millions cubic meters iron- manganese-rich tailings into Paraopeba River, leading Belo Horizonte metropolitan region resource, until now. To accomplish proposed goal, an assemblage artificial intelligence socio-economic development models were anticipate precipitation, discharge metal concentrations (iron, manganese) 2033. Then, ratios between impacted non-impacted sites determined values representing extreme events selected further assessment. A ratio ≈1 generally indicates similarity areas or, put another way, return pre-rupture condition. Moreover, is estimated under influence peak flows, then value conditions most unfavorable hydrologic regimes, thus return. So, plotted against fitted straight line intercept-x requested time. results pointed 6.57 years after accident, while using iron contaminant indicator, or 8.71 manganese considered. Despite being relatively low-risk timeframe, should implemented phases monitored precaution potential sporadic events, dredging from continue accelerated.

Language: Английский

A method to describe attenuation of river contamination under peak flows: Can the public water supply from Paraopeba River finally return after the Brumadinho dam disaster? DOI Creative Commons
Glauco de Souza Rolim, Fernando António Leal Pacheco, Renato Farias do Valle

et al.

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 949, P. 174970 - 174970

Published: July 26, 2024

Tailings dams' disasters begin a stage of river water contamination with no endpoint at first sight. But when the was formerly used for public supply and use suspended as consequence dam break, time window safe suspension lift must be anticipated to help managers. The purpose this study seek that moment in case Brumadinho disaster which occurred 2019 injected millions cubic meters iron- manganese-rich tailings into Paraopeba River, leading Belo Horizonte metropolitan region resource, until now. To accomplish proposed goal, an assemblage artificial intelligence socio-economic development models were anticipate precipitation, discharge metal concentrations (iron, manganese) 2033. Then, ratios between impacted non-impacted sites determined values representing extreme events selected further assessment. A ratio ≈1 generally indicates similarity areas or, put another way, return pre-rupture condition. Moreover, is estimated under influence peak flows, then value conditions most unfavorable hydrologic regimes, thus return. So, plotted against fitted straight line intercept-x requested time. results pointed 6.57 years after accident, while using iron contaminant indicator, or 8.71 manganese considered. Despite being relatively low-risk timeframe, should implemented phases monitored precaution potential sporadic events, dredging from continue accelerated.

Language: Английский

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