Impact of coal mining on water quality of three artificial lakes in Morozini River Basin (Treviso, Santa Catarina State, Brazil)
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Data
2011-09-01
Autores
Moschini-Carlos, Viviane [UNESP]
Pompêo, Marcelo Luiz Martins
Lobo, Felipe de Lucia
Meirelles, Sergio Tadeu
Título da Revista
ISSN da Revista
Título de Volume
Editor
Associação Brasileira de Limnologia
Resumo
OBJETIVO: Avaliar a qualidade da água de três lagos presentes em uma área abandonada de mineração de carvão. MÉTODOS: Foram amostrados em perfil três lagos presentes na bacia de drenagem do rio Morozini (Treviso, Santa Catarina, Brasil), com coletas em duas épocas do ano (fevereiro - verão e julho - inverno). RESULTADOS: de maneira geral, os três lagos estudados apresentaram elevadas concentrações de SO4-2, Mg, Fe, Al, Ca, Ba, Si, Zn, Ni, Na, K, Sr, B, Cd, Cr, Pb e Cu. CONCLUSÕES: Esta pesquisa sugere que a atividade de mineração e a prática de disposição de rejeitos adotada pelas companhias de mineração afetaram drasticamente a qualidade da água dos lagos estudados, tornando-os inapropriados a diversos usos humanos, tais como lazer, pesca e natação.
AIM: To assess water quality of three lakes located in an abandoned coal mining area, in the Morozini River basin (Treviso, Santa Catarina State, Brazil). METHODS: The study sites were three lakes mining pits flooded after deactivation, near the drainage basin of the Morozini River (Treviso City, Santa Catarina State, Brazil). Samplings were carried out in profile in the limnetic region during two seasons (Summer in February and Winter in July). RESULTS: In general, the three lakes showed high concentrations of SO4-2, Mg, Fe, Al, Ca, Ba, Si, Zn, Ni, Na, K, Sr, B, Cd, Cr, Pb and Cu. CONCLUSIONS: Coal mining activity and waste disposal practices adopted by the mining companies in the Morozini River basin have drastically affected the water quality of the examined lakes and made them inappropriate for diverse human uses, such as leisure, swimming and fishing.
AIM: To assess water quality of three lakes located in an abandoned coal mining area, in the Morozini River basin (Treviso, Santa Catarina State, Brazil). METHODS: The study sites were three lakes mining pits flooded after deactivation, near the drainage basin of the Morozini River (Treviso City, Santa Catarina State, Brazil). Samplings were carried out in profile in the limnetic region during two seasons (Summer in February and Winter in July). RESULTS: In general, the three lakes showed high concentrations of SO4-2, Mg, Fe, Al, Ca, Ba, Si, Zn, Ni, Na, K, Sr, B, Cd, Cr, Pb and Cu. CONCLUSIONS: Coal mining activity and waste disposal practices adopted by the mining companies in the Morozini River basin have drastically affected the water quality of the examined lakes and made them inappropriate for diverse human uses, such as leisure, swimming and fishing.
Descrição
Palavras-chave
CONAMA, metais, qualidade da água, acidificação, CONAMA, metals, water quality, acidification
Como citar
Acta Limnologica Brasiliensia. Associação Brasileira de Limnologia, v. 23, n. 3, p. 271-281, 2011.