| Records |
| Author |
Kepler, D.A.; Mc Cleary, E.C. |
| Title |
Successive Alkalinity-Producing Systems (SAPS) for the Treatment of Acid Mine Drainage |
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Journal Article |
| Year |
1994 |
Publication |
Proceedings, International Land Reclamation and Mine Drainage Conference |
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1 |
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Pages |
195-204 |
| Keywords |
acid mine drainage; alkalinity; anaerobic environment; calcium carbonate; chemical reactions; experimental studies; pH; pollutants; pollution; remediation; water quality SAPS mine water RAPS |
| Abstract |
Constructed wetland treatment system effectiveness has been limited by the alkalinity-producing, or acidity-neutralizing, capabilities of systems. Anoxic limestone drains (ALD's) have allowed for the treatment of approximately 300 mg/L net acidic mine drainage, but current design guidance precludes using successive ALD's to generate alkalinity in excess of 300 mg/L because of concerns with dissolved oxygen. “Compost” wetlands designed to promote bacterially mediated sulfate reduction are suggested as a means of generating alkalinity required in excess of that produced by ALD's. Compost wetlands create two basic needs of sulfate reducing bacteria; anoxic conditions resulting from the inherent oxygen demand of the organic substrate, and quasi-circumneutral pH values resulting from the dissolution of the carbonate fraction of the compost. However, sulfate reduction treatment area needs are generally in excess of area availability and/or cost effectiveness. Second generation alkalinity-producing systems demonstrate that a combination of existing treatment mechanisms has the potential to overcome current design concerns and effectively treat acidic waters ad infinitum. Successive alkalinity-producing systems (SAPS) combine ALD technology with sulfate reduction mechanisms. SAPS promote vertical flow through rich organic wetland substrates into limestone beds beneath the organic compost, discharging the pore waters. SAPS allow for conservative wetland treatment sizing calculations to be made as a rate function based on pH and alkalinity values and associated contaminant loadings. SAPS potentially decrease treatment area requirements and have the further potential to generate alkalinity in excess of acidity regardless od acidity concentrations. |
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Successive Alkalinity-Producing Systems (SAPS) for the Treatment of Acid Mine Drainage; Cn, Kj, Aj; file:///C:/Dokumente%20und%20Einstellungen/Stefan/Eigene%20Dateien/Artikel/9722.pdf; AMD ISI | Wolkersdorfer |
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CBU @ c.wolke @ 9722 |
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55 |
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Cravotta, C.A., III; Watzlaf, G.R.; Naftz, D.L.; Morrison, S.J.; Fuller, C.C.; Davis, J.A. |
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Design and performance of limestone drains to increase pH and remove metals from acidic mine drainage Handbook of groundwater remediation using permeable reactive barriers; applications to radionuclides, trace metals, and nutrients |
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Book Chapter |
| Year |
2002 |
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acid mine drainage; alkaline earth metals; aquatic environment; aquifers; calcium; carbonate rocks; chemical properties; construction; construction materials; crushed stone; dissolved materials; drainage; effluents; ground water; limestone; magnesium; metals; pH; pollution; porous materials; precipitation; retention; saturation; sedimentary rocks; sulfate ion; suspended materials 22, Environmental geology |
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Academic Press |
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Amsterdam |
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0125135637 |
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Design and performance of limestone drains to increase pH and remove metals from acidic mine drainage Handbook of groundwater remediation using permeable reactive barriers; applications to radionuclides, trace metals, and nutrients; GeoRef; English; 2004-040518; References: 66; illus. incl. 4 tables |
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CBU @ c.wolke @ 5686 |
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81 |
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Ziemkiewicz, P.F.; Meek, F.A., Jr.; Skousen, J.G.; Ziemkiewicz, P.F. |
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Long term behavior of acid forming rock; results of 11-year field studies |
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Book Chapter |
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1996 |
Publication |
Acid mine drainage control and treatment |
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acid mine drainage; acid rock drainage; alkaline earth metals; alkalinity; calcium; chemical composition; clastic rocks; coal mines; leachate; metals; mines; pH; pollution; prediction; reclamation; remediation; sandstone; sedimentary rocks; shale; spoils; sulfate ion; sulfur; United States; Upshur County West Virginia; waste disposal; waste rock; weathered materials; weathering; West Virginia 22, Environmental geology |
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West Virginia University and the National Mine Land Reclamation Center |
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Morgantown |
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Long term behavior of acid forming rock; results of 11-year field studies; GeoRef; English; 2004-051147; Edition: 2 References: 9; illus. incl. 1 table |
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CBU @ c.wolke @ 6357 |
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190 |
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Bauroth, M.; Hähne, R.; Wolf, J. |
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Erfahrungen bei der Dekontamination saurer Wässer des Uranbergbaus mittels Einbindung in Kraftwerksaschen. Decontamination of acit water from uranium mining by ash filtration method |
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Journal Article |
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1991 |
Publication |
Neue Bergbautechnik |
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12 |
Pages |
420-422 |
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Bergbau Uranerz Grubenentwaesserung Chemische-Abwasserreinigung Asche Calciumcarbonat Verrieselungsfeld Dekontamination |
| Abstract |
Kontaminierte Grubenwässer des Uranbergbaus in Sachsen und Thüringen weisen eine regional schwankende chemische Zusammensetzung auf (Härte: 50 bis 1500 (Grad) dH, Sulfat: 2 bis 30 g/l, Eisen: 0,5 bis 4 g/l, Uranium: 1 bis 20 mg/l). Eine erfolgreich praktizierte Technologie der Abwasserreinigung ist dessen Verrieselung auf Kraftwerksaschen, die auf dichtem Untergrund bzw. dort, wo eine Grundwasserkontamination auszuschließen ist, aufgehaldet werden. Ziel ist es, den Nutzungsgrad der Asche zur Sicherung des Gewässerschutzes zu erhöhen. Eine geeignete Technologie ist dabei auch die Mischung von Asche und Kalk. Da die berieselte Asche bei der Einwirkung von natürlichen Niederschlägen ihre Kontamination teilweise wieder freisetzt, werden an die Verwahrung sowie Deponiebeschaffenheit von Aschehalden besondere Anforderungen gestellt. So muß beispielsweise die Verdunstung erhöht (Bewuchs, Vegetation) sowie die Dränage der infiltrierte Wässer verzögert werden. |
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SDAG Wismut, Chemnitz, DE |
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Erfahrungen bei der Dekontamination saurer Wässer des Uranbergbaus mittels Einbindung in Kraftwerksaschen. Decontamination of acit water from uranium mining by ash filtration method; 2627, BERG , 01.01.92; Words: 342; U9201 0120 586; 3 Seiten, 3 Bilder, 2 Tabellen, 7 Quellen 3UX *Umweltbelastung, technik* 3MZ *Bergbau, Tunnelbau, Erdöl /Erdgasförderung, Bohrtechnik* 3BX *chemische Grundlagen* 3BW *Geowissenschaften, physik*; BERG, Copyright FIZ Technik e.V.; DE Deutsch |
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CBU @ c.wolke @ 17614 |
Serial |
463 |
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| Author |
Simmons, J.A.; Andrew, T.; Arnold, A.; Bee, N.; Bennett, J.; Grundman, M.; Johnson, K.; Shepherd, R. |
| Title |
Small-Scale Chemical Changes Caused by In-stream Limestone Sand Additions to Streams |
Type |
Journal Article |
| Year |
2006 |
Publication |
Mine Water Env. |
Abbreviated Journal |
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| Volume |
25 |
Issue |
4 |
Pages |
241-245 |
| Keywords |
acid mine drainage aluminum calcium limestone sand sediment stream liming West Virginia |
| Abstract |
In-stream limestone sand addition (ILSA) has been employed as the final treatment for acid mine drainage discharges at Swamp Run in central West Virginia for six years. To determine the small-scale longitudinal variation in stream water and sediment chemistry and stream biota, we sampled one to three locations upstream of the ILSA site and six locations downstream. Addition of limestone sand significantly increased calcium and aluminum concentrations in sediment and increased the pH, calcium, and total suspended solids of the stream water. Increases in alkalinity were not significant. The number of benthic macroinvertebrate taxa was significantly reduced but there was no effect on periphyton biomass. Dissolved aluminum concentration in stream water was reduced, apparently by precipitation into the stream sediment. |
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1025-9112 |
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Small-Scale Chemical Changes Caused by In-stream Limestone Sand Additions to Streams; 1; FG 4 Abb., 2 Tab.; AMD ISI | Wolkersdorfer |
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CBU @ c.wolke @ 17420 |
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248 |
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