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104 The Legacy of Abandoned Mines ARGOZELO EFLUENTES (tratamento passivo de águas contaminadas) O tratamento das águas de fundo de mina em Argozelo, por adopção de wetland seguido de canal de arejamento, permitiu que, após tratamento, os teores em metais sejam compatíveis com os indicados na legislação em vigor. Mina de Argozelo: antes e após tratamento Argozelo Mine: Prior To and Post Treatment Valores médios (mg/l) Average values (mg/l) 2,5 2 1,5 1 0,5 0 Água de Mina antes de tratamento Mine water prior to treatment Descarga do efluente após tratamento Effluent discharge after treatment Fe Mn Zn Al As ARGOZELO EFFLUENTS (passive treatment of contaminated waters) The treatment of the bottom of Argozelo mine waters, through the choice of wetland followed by an airing channel, allowed that, after treatment, the metal contents are compatible with those permitted by the legislation in force. 1 1 Boca da galeria antes da construção. 2 Boca da galeria após construção. 1 Portal of gallery before construction. 2 Portal of gallery after construction. 2
A Herança das Minas Abandonadas 105 1 Canal de arejamento e de restituição do efluente na Ribeira. 2 Lagoa de afinação com macrófitas. 1 Effluent restitution channel in the Stream. 2 Refining (polishing) lagoon with macrophytes. 1 2
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A HERANÇA DAS MINAS ABANDONADAS A
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The “Legacy of the Abandoned Mine
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“What happened in the past reflec
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A Herança das Minas Abandonadas 13
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Page 59 and 60: A SITUAÇÃO EM PORTUGAL O MODELO A
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REFLEXÕES REFLECTIONS A Herança d
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NOTES 1. The Post-Mining Alliance i
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