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Author |
Orr, M.S. |
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Control of acid mine drainage through water management at Mt. Leyshon Gold Mine. Die Beherrschung des Problems der sauren Grubenwässer im Goldbergwerk Mt. Leyshon durch Wasserfassungs- und Wasserregulierungsmaßnahmen |
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Conference Article |
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1995 |
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Second Australian Acid Mine Drainage Workshop, Charters Towers, AU, 28 31 March 1995 |
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67-73 |
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Bergbau Gold Australien Schwefelsäure Wasserkreislauf Wasserkanal Wasseranalyse Abwasserbehandlung Absetzbecken Umweltschutz Gewässerschutz Wasserverschmutzung Wasserwirtschaft Acid mine drainage Abwassererfassung |
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Die australische Goldlagerstätte am Mt. Leyshon wird im Tagebau abgebaut. Der Durchsatz der im CIP-Verfahren arbeitenden Goldaufbereitung beträgt 5,5 Mio t/a. Das Problem der Freisetzung saurer Grubenwässer wird langfristig durch selektive Bergeeinlagerungsstrategien und die Oberflächenversiegelung der Halden gelöst. Während der Abbauarbeiten sind jedoch auch unversiegelte Haldenflächen vorhanden, aus denen saure Grubenwässer austreten können. Diese Wässer werden durch ein System von Sammelgräben aufgefangen und einem Wasserauffangbecken zugeführt. Sie werden dort durch Kalkzugabe neutralisiert. Das so gereinigte Wasser gelangt über Pumpen in den Betriebswasserkreislauf zurück. Der Zufluß zum Auffangbecken ist mit regulierbaren Wehren versehen, die bei Hochwasser so gesteuert werden, daß ein Teil der sauren Grubenwässer direkt in die viel Wasser führenden Vorfluter abgestoßen werden kann. Zu dem Rückhaltesystem gehören auch Absetzbecken, die regelmäßig entschlämmt werden. Es ist ein kontinuierliches Monitoringsystem im Einsatz, das eine lückenlose Erfassung der Wassermengen und der Wasserzusammensetzung gestattet. |
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Control of acid mine drainage through water management at Mt. Leyshon Gold Mine. Die Beherrschung des Problems der sauren Grubenwässer im Goldbergwerk Mt. Leyshon durch Wasserfassungs- und Wasserregulierungsmaßnahmen; BERG, Copyright FIZ Technik e.V.; EN Englisch; 0-646-24771-9; U9609 0027 586; 11345, BERG , 07.09.96; Words: 423; 7 Seiten, 7 Bilder, 1 Quelle 3UXX *Belastung von Wasser, Wasserreinhaltung, Abwasser* 3PAB *Aufbereitung anorganischer, mineralischer Rohstoffe* 3MZ *Bergbau, Tunnelbau, Erdöl /Erdgasförderung, Bohrtechnik* |
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CBU @ c.wolke @ 17606 |
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276 |
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Kuyucak, N. |
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Conventional and new methods for treating acid mine drainage |
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1995 |
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Cami'95 – Computer Applications in the Mineral Industry |
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863-872 |
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mine water treatment |
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Conventional and new methods for treating acid mine drainage; Isip:A1995bg01c00099; Times Cited: 0; ISI Web of Science |
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CBU @ c.wolke @ 8880 |
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144 |
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Arnekleiv, J.V. |
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Downstream Effects Of Mine Drainage On Benthos And Fish In A Norwegian River – A Comparison Of The Situation Before And After River Rehabilitation |
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1995 |
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Journal of Geochemical Exploration |
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52 |
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1-2 |
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35-43 |
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mine water treatment |
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Parts of the Norwegian river Gaula are strongly polluted from former mining activity in the area. In the most polluted parts of the river the concentration levels of Cu and Zn in 1986-1987 were up to 155 mug l-1 and 186 mug l-1, respectively. In 1989 the spoil heaps in the mining area were covered with protective layers of moss-covered plastic. In 1991-1992 the concentration levels of Cu and Zn had decreased by 75% and 65%, respectively. Animal life in the polluted area seemed to be strongly affected by the trace metals in 1986-1987. The 1991-1992 results showed a marked increase in the number of species and in the number of individuals of each species of Ephemeroptera and Plecoptera, compared with the results from 1986-87. Good correlations were found between the concentrations of Cu in the water and both the number of species and the number of individuals of Ephemeroptera and Plecoptera. Analysis of the species Baetis rhodani, Diura nanseni and Rhyacophila nubila showed an average total dry weight content of Cu up to 264 mug g-1, of Zn up to 1930 mug g-1 and of Cd up to 16 mug g-1. The contents of the three trace metals were significantly different from one species to another and in part between the stations for each species. In 1987 trout died after an exposure of one to two days on three test sites in the river, whereas in 1991-1992 40-75% of the trout survived an exposure period of several weeks at two of the sites. Electrofishing in 1991-1992 indicated recolonization of trout in the lower parts of the former affected and uninhabitable area. |
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Downstream Effects Of Mine Drainage On Benthos And Fish In A Norwegian River – A Comparison Of The Situation Before And After River Rehabilitation; Wos:A1995qp96600005; Times Cited: 2; ISI Web of Science |
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CBU @ c.wolke @ 17175 |
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88 |
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Arnekleiv, J.V.; Storset, L. |
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Downstream effects of mine drainage on benthos and fish in a Norwegian river; a comparison of the situation before and after river rehabilitation |
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1995 |
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Heavy metal aspects of mining pollution and its remediation |
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52 |
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35-43 |
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Chordata copper Europe experimental studies fluvial environment Gaula River metals Norway Pisces pollutants pollution reclamation Scandinavia trace metals Vertebrata Western Europe zinc 22, Environmental geology |
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Parts of the Norwegian river Gaula are strongly polluted from former mining activity in the area. In the most polluted parts of the river the concentration levels of Cu and Zn in 1986-1987 were up to 155 mu g l (super -1) and 186 mu g l (super -1) , respectively. In 1989 the spoil heaps in the mining area were covered with protective layers of moss-covered plastic. In 1991-1992 the concentration levels of Cu and Zn had decreased by 75% and 65%, respectively. Animal life in the polluted area seemed to be strongly affected by the trace metals in 1986-1987. The 1991-1992 results showed a marked increase in the number of species and in the number of individuals of each species of Ephemeroptera and Plecoptera, compared with the results from 1986-87. Good correlations were found between the concentrations of Cu in the water and both the number of species and the number of individuals of Ephemeroptera and Plecoptera. Analysis of the species Baetis rhodani, Diura nanseni and Rhyacophila nubila showed an average total dry weight content of Cu up to 264 mu g g (super -1) , of Zn up to 1930 mu g g (super -1) and of Cd up to 16 mu g g (super -1) . The contents of the three trace metals were significantly different from one species to another and in part between the stations for each species. In 1987 trout died after an exposure of one to two days on three test sites in the river, whereas in 1991-1992 40-75% of the trout survived an exposure period of several weeks at two of the sites. Electrofishing in 1991-1992 indicated recolonization of trout in the lower parts of the former affected and uninhabitable area. |
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Downstream effects of mine drainage on benthos and fish in a Norwegian river; a comparison of the situation before and after river rehabilitation; 1995-033037; 9th international conference on Heavy metals in the environment, Toronto, ON, Canada, Sept. 12-17, 1993 Special Issue References: 23; illus. incl. 2 tables; GeoRef; English |
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CBU @ c.wolke @ 16683 |
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30 |
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Author |
King, T.V.V. |
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Environmental considerations of active and abandoned mine lands: lessons from Summitville, Colorado |
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1995 |
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US Geological Survey Bulletin |
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2220 |
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38 |
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acid mine drainage mining environmental effect remediation environmental assessment USA Colorado Summitville 1 Geography |
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Extreme acid-rock drainage is the dominant long-term environmental concern at the Summitville mine and could have been predicted given the geological characteristics of the deposit. Extensive remedial efforts are required to isolate both unweathered sulfides and soluble metal salts in the open-pit area and mine-waste piles from weathering and dissolution. Results of studies as of late 1993 indicate that mining at Summitville has had no discernible short-term adverse effects on barley or alfalfa crops irrigated with Alamosa River water. Remediation of the site will help to ensure that no adverse effects occur over the longer term. -from Editor |
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Environmental considerations of active and abandoned mine lands: lessons from Summitville, Colorado; (1119406); 95j-11521; Using Smart Source Parsing pp; Geobase |
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CBU @ c.wolke @ 17561 |
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332 |
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