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Analysis of Water Quality in the Cacau and Tocantins Rivers in the Portion of the Construction of “Ponte da Amizade”

Author(s): Josélia Calixto Leitão Borsatto | Marcos Vinicius Borsatto | José Fábio França Orlando | Marcelo Francisco da Silva | Dany Geraldo Kramer Cavalcanti e Silva

Journal: Engenharia Ambiental : Pesquisa e Tecnologia
ISSN 1678-2178

Volume: 7;
Issue: 2;
Start page: 163;
Date: 2010;
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Keywords: monitoring | water | Tocantins river | Cacau river.

The bridge over the river Tocantins reduces 160 km the flow of production in the state of Tocantins to the Port of Itaqui in São Luís (MA) and connects the cities of Imperatriz (MA) and São Miguel (TO). Also called Friendship Bridge, it will ensure a lower cost of walking locomotion and carrying loads between the Imperatriz (MA) and the neighboring cities of Tocantins, stimulating the economy in the South of Maranhão and north of Tocantins. This study aimed to analyze the processes of contamination of rivers Tocantins and Cacau in order to minimize the impacts arising from the work of building the bridge over the river Tocantins. Through physical-chemical, bacteriological and phytoplankton held in July and October 2007 and January 2008, there was no significant change in their securities on behalf of the enterprise under study.
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