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Diamond, J.M.; Bower, W.; Gruber, D. |
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Title |
Use of man-made impoundment in mitigating acid mine drainage in the North Branch Potomac River |
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1993 |
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Environ. Manage. |
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17 |
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14 |
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Acid mine drainage Potomac River Reservoir macroinvertebrate Fish Mayflies |
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Abstract |
The US Department of the Army, Baltimore District Corps of Engineers, oversees a long-term monitoring study to assess and evaluate effects of the Jennings-Randolph reservoir on biota in the North Branch Potomac River. The reservoir was intended, in part, to mitigate effects of acid mine drainage originating in upstream and headwater areas. The present study assessed recovery of benthos and fish in this system, six years after completion of the reservoir. Higher pH and lower iron and sulfate concentrations were observed upstream of the reservoir compared to preimpoundment conditions, suggesting better overall water quality in the upper North Branch. Water quality improved slightly directly downstream of the reservoir. However, the reservoir itself was poorly colonized by macrophytes and benthic organisms, and plankton composition suggested either metal toxicity and/or nutrient limitation. One large tributary to the North Branch and the reservoir (Stony River) was shown to have high (and possibly toxic) levels of manganese, iron, zinc, and aluminum due to subsurface coal mine drainage. Macroinvertebrate diversity and number of taxa were higher in sites downstream of the reservoir in the present study. Compared with previous years, the present study suggested relatively rapid recovery in the lower North Branch due to colonization from two major unimpacted tributaries in this system: Savage River and South Branch Potomac. Abundance of certain mayfly species across sites provided the most clear evidence of longitudinal gradients in water quality parameters and geomorphology. Fish data were consistent with macroinvertebrate results, but site-to-site variation in species composition was greater. Data collected between 1982 and 1987 suggested that certain fish species have unsuccessfully attempted to colonize sites directly downstream of the reservoir despite the more neutral pH water there. Our results show that recovery of biota in the North Branch Potomac was attributed to decreased acid inputs from mining operations and dilution from the Savage River, which contributed better water quality. Continued improvement of North Branch Potomac biota may not be expected unless additional mitigation attempts, either within the reservoir or upstream, are undertaken. |
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0364-152x |
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Feb.; Use of man-made impoundment in mitigating acid mine drainage in the North Branch Potomac River; New York, NY ; Heidelberg ; Berlin : Springer; file:///C:/Dokumente%20und%20Einstellungen/Stefan/Eigene%20Dateien/Artikel/7016.pdf; Opac |
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CBU @ c.wolke @ 7016 |
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79 |
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Zamzow, M.J.; Schultze, L.E. |
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Title |
Treatment of acid mine drainage using natural zeolites |
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Journal Article |
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1993 |
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International Conference on the Occurrence, Properties, and Utilization of Natural Zeolites |
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1993 |
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220-221 |
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abandoned mines; acid mine drainage; clinoptilolite; experimental studies; feasibility studies; framework silicates; hydrochemistry; mines; Nevada; northeastern Nevada; phillipsite; remediation; Rio Tinto Deposit; silicates; surface water; United States; zeolite group abandoned mines acid mine drainage clinoptilolite experimental studies feasibility studies framework silicates hydrochemistry mines Nevada northeastern Nevada phillipsite remediation Rio Tinto Deposit silicates surface water United States zeolite group |
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Treatment of acid mine drainage using natural zeolites; GeoRef: 95-04036 1 table; AMD ISI | Wolkersdorfer |
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CBU @ c.wolke @ 9998 |
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192 |
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Rabenhorst, M.C.; James, B.R. |
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Acid mine drainage remediation via sulfidization in wetlands Fiscal year 1992 annual report |
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RPT |
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1993 |
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acid mine drainage; anaerobic environment; Appalachians; concentration; decontamination; ferric iron; iron; manganese; marshes; Maryland; metals; mires; North America; oxidation; pollutants; pollution; pore water; remediation; sulfidization; transport; United States; water quality; water treatment; wetlands 22, Environmental geology |
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University of Maryland, W.R.R.C.C.P.M.D.U.S. |
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Acid mine drainage remediation via sulfidization in wetlands Fiscal year 1992 annual report; 1998-034327; GeoRef; English; illus. incl. 1 table University of Maryland, Water Resources Research Center, College Park, MD, United States |
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CBU @ c.wolke @ 6684 |
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267 |
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Hayward, D.; Barnard, R. |
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Treatment of acid mine wastewaters. Behandlung saurer Grubenwässer |
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1993 |
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World Mining Equipment |
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17 |
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6 |
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36-37 |
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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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Bridwell, R.J.; Travis, B.J.; Stone, W. |
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Remediation of acid mine drainage Ground water technology and tasks in the 90's |
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1993 |
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acid mine drainage; ground water; iron sulfides; kinetics; mathematical models; movement; pollutants; remediation; sulfides; water quality 22, Environmental geology |
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Remediation of acid mine drainage Ground water technology and tasks in the 90's; GeoRef; English; 1996-020061; Rocky Mountain ground water conference and 6th annual conference American Water Resource Association, New Mexico Section , on Ground water technology and tasks in the 90's, Albuquerque, NM, United States, Oct. 27-29, 1993 |
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CBU @ c.wolke @ 6703 |
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436 |
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