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Author |
Camus, M. |
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Title |
Le traitement des eaux de mine desaffectees. Die Aufbereitung von Wässern aus stillgelegten Bergwerken. Treating water from closed mines |
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Year |
1997 |
Publication |
Mines et Carrieres |
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Feb |
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38-39 |
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Keywords |
Erzbergbau Frankreich Blei Silber Zink Eisen pH-Wert Quellwasser Flusswasserverschmutzung Wasseraufbereitungsanlage chemische- Abwasserreinigung chemische-Reaktion Kennziffer Wirkungsgrad chemische-Analyse Fließbild Belüftung Ausflocken Neutralisation=chemische-Reaktion Grubenwasserreinigung |
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In einem alten französischen Bergwerk, in dem früher Blei und Silber abgebaut wurden, kam es nach dem Wiederanstieg des Grundwassers zu einer erhöhten Schwermetallbelastung von Quellgebieten, die einen Fluß mit Forellenbesatz schädigten. Zur Beseitigung dieser Grundwasserverunreinigung wurde das saure Grubenwasser mit erhöhten Eisen- und Zinkgehalten übertage gefaßt und einer Wasseraufbereitung unterzogen. In der für einen Durchsatz von 100 m(exp 3)/h konzipierten Wasseraufbereitung wurden die Schadstoffbestandteile durch Oxidation und anschließende Neutralisation mit Kalk (Anhebung des pH-Wertes auf 8,2 bis 8,3) gefällt, durch Zugabe eines Flockungsmittels gebunden und die Schlammbestandteile anschließend einem Eindicker und Filterpressen zugeführt. Der Kalkverbrauch wird mit 240 kg/d angegeben. Die tabellarisch zusammengestellten Analysenergebnisse zeigen, daß die Wasseraufbereitung einen sehr guten Wirkungsgrad hatte. Neben einer Anhebung des pH-Wertes von 6,5 auf 8,2 konnten die Schwermetallgehalte bei Fe von 22 mg/l auf 0,09 mg/l und bei Zn von 38 mg/l auf 0,4 mg/l abgesenkt werden. |
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Le traitement des eaux de mine desaffectees. Die Aufbereitung von Wässern aus stillgelegten Bergwerken. Treating water from closed mines; 13313, BERG , 30.04.97; Words: 501; U9705 0024 586; 2 Seiten, 1 Bild, 1 Tabelle 3UM *Umweltschadstoffe, toxikologie* 3UX *Umweltbelastung, technik* 3MZ *Bergbau, Tunnelbau, Erdöl /Erdgasförderung, Bohrtechnik* 3PL *chemische Verfahrenstechnik, chemische Reaktionstechnik*; BERG, Copyright FIZ Technik e.V.; FR Französisch |
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CBU @ c.wolke @ 17601 |
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424 |
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Hayward, D.; Barnard, R. |
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Title |
Treatment of acid mine wastewaters. Behandlung saurer Grubenwässer |
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Journal Article |
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Year |
1993 |
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World Mining Equipment |
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17 |
Issue |
6 |
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36-37 |
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Keywords |
Wasseraufbereitung Abwasserbehandlung chemische-Abwasserreinigung Grubenentwässerung Ausfällung Schwermetalle Calciumcarbonat pH-Wert Wasserreinhaltung Grubenwasser |
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Überblick über einschlägige Verfahren zum Ausfällen der sauren Betandteile, Entfernen der Schwermetalle, und Einstellen des pH-Wertes auf einen Wert von 6 bis 9. Hauptsächliche Verfahren zum Ausfällen sind: Ausfällen mit Kalkhydrat (Ca(OH)2), mit Kalkstein, Calcium- oder Natriumsulfid. Durch Abtrennen des Niederschlages in einem Kläreindicker und zusätzliche Reinigung durch Filtrieren kann ein Anteil von 90% der unlöslichen Schwermetallverbindungen entfernt werden. Allgemein wird mit diesem Verfahren ein Standardgehalt von 5 mg/l erreicht. Durch zusätzliche Anwendung physikochemischer Verfahren kann der Schwermetallgehalt weiter gesenkt werden: Mikrofiltration, Umkehrosmose, Elektrodialyse, Ionenaustausch, biochemische und spezielle chemische Verfahren können je nach Eigenart der Grubenwässer verwendet werden. |
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0746-729x |
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Treatment of acid mine wastewaters. Behandlung saurer Grubenwässer; 4737, BERG , 01.01.93; Words: 328; M9311 6018 586; 2 Seiten, 2 Bilder 3UXX *Belastung von Wasser, Wasserreinhaltung, Abwasser* 3MZ *Bergbau, Tunnelbau, Erdöl /Erdgasförderung, Bohrtechnik* 3PH *Trennen fest/flüssig/gasförm. Stoffe, dispers. Stoffsysteme*; BERG, Copyright FIZ Technik e.V.; EN Englisch |
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CBU @ c.wolke @ 17612 |
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358 |
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Carlson, L.; Kumpulainen, S. |
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Retention of harmful elements by ochreous precipitates of iron |
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Journal Article |
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2001 |
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Tutkimusraportti Geologian Tutkimuskeskus |
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- |
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154 |
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30-33 |
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Surface water quality Pollution and waste management non radioactive geographical abstracts: physical geography hydrology (71 6 9) geological abstracts: environmental geology (72 14 2) iron oxide precipitation chemistry sulfate arsenate heavy metal pH water pollution remediation |
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The capability of soil fines to fix harmful elements, e.g. heavy metals and arsenic, depends on specific surface area and other characteristics, such as surface charge. In the pH-range typical of natural waters (pH 5,5-7,5), the surfaces of fine-grained silicate particles and manganese oxides are negatively charged; consequently cations, such as heavy metals, fix effectively to them. The iron oxide surfaces are usually positively charged and typically fix anions, such as sulphate and arsenate. Retention of anions is especially extensive to precipitates formed from acid mine drainage (pH 2,5-5,0). For example, precipitates found at Paroistenjarvi mine, Finland, contain more than 70 g/kg of arsenic (dry matter). Adsorbed anions, e.g. sulphate, enhance the capacity of precipitate to fix heavy metal cations in low-pH environments. |
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L. Carlson, Tehtaankatu 25 A 4, Helsinki FIN-00150, Finland liisa.carlson@kolumbus.fi |
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0781-4240 |
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Retention of harmful elements by ochreous precipitates of iron; 2392974; Oksidiset rautasaostumat haitallisten aineiden pidattajina. Finland 7; Geobase |
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CBU @ c.wolke @ 17533 |
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421 |
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Bolzicco, J.; Carrera, J.; Ayora, C. |
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Eficiencia de la barrera permeable reactiva de Aznalcollar (Sevilla, Espana) como remedio de aguas acidas de mina. Reactive permeable disposal barrier at Aznalcollar Mine, Seville, Spain; as remediation for acid mine drainage |
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2004 |
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Revista Latino-Americana de Hidrogeologia |
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4 |
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27-34 |
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abandoned mines acid mine drainage Agrio River Andalusia Spain aquifers Aznalcollar Mine Cenozoic chemical composition chemical ratios copper ores dams disposal barriers drainage basins Europe geochemistry ground water Guadiamar River hydrochemistry Iberian Peninsula Iberian pyrite belt igneous rocks metal ores mineral composition mines mining Miocene Neogene permeability pH pollution reactive barriers remediation sedimentary rocks sediments Seville Spain Southern Europe Spain surface water tailings Tertiary volcanic rocks waste disposal water treatment zinc ores 22, Environmental geology |
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As a result of the collapse of a mine tailing dam in april 1998 about 40 km of the Agrio and Guadiamar valleys were covered with a layer of pyrite sludge. Although most of the sludge was removed, a small amount remains in the soil of the Agrio valley and the aquifer remains polluted with acid water (ph<4) and metals (10 mg/L Zn, 5 mg/L Cu and Al). A permeable reactive barrier was build across the aquifer to increase the alcalinity and retain the metals. The barrier is made up of three sections of 30 m longX1.4 m thickX5 m deep (average) containing different proportions of limestone gravel, organic compost and zero-valent iron. The residence time of the water in the barrier is about two days. Within the barrier, the pH values increase to near neutral mainly due to calcite dissolution. Metals co-precipitate as oxyhydroxides, and they are also adsorbed on the organic matter surface. Down-stream the barrier, the total pollution removal is around 60-90% for Zn and Cu, and from 50 to 90% for Al and acidity. |
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Eficiencia de la barrera permeable reactiva de Aznalcollar (Sevilla, Espana) como remedio de aguas acidas de mina. Reactive permeable disposal barrier at Aznalcollar Mine, Seville, Spain; as remediation for acid mine drainage; 2004-072864; References: 7; illus. incl. geol. sketch map Brazil (BRA); GeoRef; Spanish |
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CBU @ c.wolke @ 16471 |
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443 |
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Author |
Adam, K. |
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Solid wastes management in sulphide mines: From waste characterisation to safe closure of disposal sites |
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2003 |
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Minerals and Energy Raw Materials Report |
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18 |
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4 |
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25-35 |
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Waste Management and Pollution Policy Pollution and waste management non radioactive geographical abstracts: human geography environmental planning (70 11 5) geological abstracts: environmental geology (72 14 2) waste disposal waste management solid waste mining industry acid mine drainage Europe Eurasia |
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Environmentally compatible Waste Management schemes employed by the European extractive industry for the development of new projects, and applied in operating sulphide mines, are presented in this study. Standard methodologies used to assess the geotechnical and geochemical properties of the solid wastes stemming from mining and processing of sulphidic metal ores are firstly given. Based on waste properties, the measures applied to ensure the environmentally safe recycling and disposal of sulphidic wastes are summarised. Emphasis is given on the novel techniques developed to effectively prevent and mitigate the acid drainage phenomenon from sulphidic mine wastes and tailings. Remediation measures taken to minimise the impact from waste disposal sites in the post-closure period are described. |
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K. Adam, ECHMES Ltd, Mikras Asias 40-42, Athens 11527, Greece echmes@otenet.gr |
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1404-1049 |
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Solid wastes management in sulphide mines: From waste characterisation to safe closure of disposal sites; 2582509; Norway 25; Geobase |
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CBU @ c.wolke @ 17510 |
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492 |
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