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"Lagoa da Pampulha maintains Class 3 standard Remediation work has been carried out on site since 2016.
Updated: 07/07/2020 Lagoa da Pampulha, one of the postcards of Belo Horizonte, MG, is maintaining Class 3 quality targets, according to analyzes carried out in May. Thus, according to environmental legislation Conama 357/05, it can be used for navigation and water sports. The Pampulha Viva Consortium, hired by the City Hall to rehabilitate the site, has been working on the project since 2016 and should continue until 2023, as long as it meets the water quality standard.The challenge of depollution work was to monitor five eutrophication indicators: BOD - biochemical oxygen demand, thermotolerant coliforms, chlorophyll A, total phosphorus and cyanobacteria. It involved the association of two complementary technologies offered by two companies in Porto Alegre, RS: the bioremediation with Enzilimp, from Millenniun Tecnologia Ambiental, to meet the DBO and thermotolerant coliforms, and the environmental remediation with Phoslock, marketed by HydroScience, which directly attends the chlorophyll A, total phosphorus and cyanobacteria parameters. CNT Ambiental, from Belo Horizonte, is the leading company of the Pampulha Viva Consortium, with the responsibility of supervising the entire project, operating activities, conducting limnological monitoring and providing labor to perform the services.With a current approximate 9.7 million cubic meters, the lagoon received for decades the contribution of sediment, sewage and garbage, which led to a reduction in the water mirror and a serious eutrophication process due to the accumulation of nutrients with algae proliferation. causing odors and high oxygen consumption due to the high presence of organic matter. The Pampulha watershed has an area of 97 km², 45% of which is in Belo Horizonte, and the other 55%, in the municipality of Contagem. ...The Pampulha Architectural Complex was recognized as a Cultural Heritage of Humanity by Unesco - United Nations Educational, Scientific and Cultural Organization in 2016. To apply for the title, the Belo Horizonte City Hall needed to revitalize the area and adjust the quality of water for Class 3 of the lagoon."
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