Records |
Author |
Guo, F.; Yu, H. |
Title |
Hydrogeochemistry and treatment of acid mine drainage in southern China |
Type |
Book Chapter |
Year |
1993 |
Publication |
Proceedings of the Annual National Meeting – American Society for Surface Mining and Reclamation, vol.10 |
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Issue |
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Pages |
277-283 |
Keywords |
acid mine drainage Asia bacteria chemical reactions China coal mines ecology Far East geochemistry hydrochemistry Jiangxi China lime mines oxidation pH pollution sulfides surface water trace elements water quality 22 Environmental geology 02B Hydrochemistry |
Abstract |
Coal mines and various sulfide ore deposits are widely distributed in Southern China. Acid mine drainage associated with coal and metal sulfide deposits affects water quality in some mined areas of Southern China. Mining operations accelerate this natural deterioration of water quality by exposing greater surface areas of reactive minerals to the weathering effects of the atmosphere, hydrosphere, and biosphere. Some approaches to reduce the effects of acid mine drainage on water quality are adopted, and they can be divided into two aspects: (a) Man-made control technology based on long-term monitoring of acid mine drainage; and, (b) Neutralization of acidity through the addition of lime. It is important that metals in the waste water are removed in the process of neutralization. A new method for calculating neutralization dosage is applied. It is demonstrated that the calculated value is approximately equal to the actual required value. |
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Zamora, B.A.; Connolly, R.E. |
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The challenge of integrating diverse perspectives in reclamation |
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Hydrogeochemistry and treatment of acid mine drainage in southern China; GeoRef; English; 2002-028935; 10th annual national meeting of the American Society for Surface Mining and Reclamation, Spokane, WA, United States, May 16, 1993 References: 3; illus. incl. 4 tables |
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CBU @ c.wolke @ 16744 |
Serial |
366 |
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Author |
Nairn, R.W.; Hedin, R.S. |
Title |
Designing wetlands for the treatment of polluted coal mine drainage |
Type |
Book Chapter |
Year |
1992 |
Publication |
Wetlands; proceedings of the 13th annual conference; Society of Wetland Scientists |
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Pages |
224-229 |
Keywords |
acidic composition; alkalinity; Appalachian Plateau; Appalachians; biodegradation; carbonate rocks; chemical properties; coal mines; constructed wetlands; construction; limestone; mine drainage; mines; North America; Pennsylvania; pollutants; pollution; reclamation; remediation; sedimentary rocks; United States; western Pennsylvania; wetlands 22, Environmental geology |
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Landin, M.C. |
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Designing wetlands for the treatment of polluted coal mine drainage; GeoRef; English; 1996-062750; 13th annual conference of the Society of Wetland Scientists, New Orleans, LA, United States, May 31-June 6, 1992 References: 7 |
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CBU @ c.wolke @ 6720 |
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289 |
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Author |
Wiseman, I.M.; Edwards, P.J.; Rutt, G.P. |
Title |
Recovery of an aquatic ecosystem following treatment of abandoned mine drainage with constructed wetlands |
Type |
Journal Article |
Year |
2003 |
Publication |
Land Contam. Reclam. |
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Volume |
11 |
Issue |
2 |
Pages |
221-230 |
Keywords |
Pollution and waste management non radioactive Groundwater problems and environmental effects Wetlands and estuaries geological abstracts: environmental geology (72 14 2) geomechanics abstracts: excavations (77 10 10) geographical abstracts: physical geography hydrology (71 6 8) coal mine recovery aquatic ecosystem constructed wetland water treatment mine drainage abandoned mine |
Abstract |
Seven kilometres of the River Pelenna in South Wales were impacted for approximately 30 years by discharges from abandoned coal mines. Elevated iron and low pH caused significant ochreous staining and had detrimental effects on the river ecology. The River Pelenna Mine water project constructed a series of passive wetland treatment systems to treat these discharges. Monitoring of the performance and environmental benefits of these has been undertaken as part of an Environment Agency R&D project. This project has assessed the changes in water quality as well as monitoring populations of invertebrates, fish and birds between 1993 and 2001. Performance data from the wetlands show that on average the three systems are removing between 82 and 95% of the iron loading from the mine waters. In the rivers downstream, the dissolved iron concentration has dropped to below the Environmental Quality Standard (EQS) of 1 mg/L for the majority of the time. Increases in pH downstream of the discharges have also been demonstrated. Trout (Salmo trutta) recovered quickly following mine water treatment, returning the next year to areas that previously had no fish. Intermittent problems with overflows from the treatment systems temporarily depleted the numbers, but the latest data indicate a thriving population. The overflow problems and also background episodes of acidity have affected the recovery of the riverine invertebrates. However, there have been gradual improvements in the catchment, and in the summer of 2001 most sites held faunas which approached those found in unpolluted controls. Recovery of the invertebrate fauna is reflected in marked increases in the breeding success of riverine birds between 1996 and 2001. This study has shown that constructed wetlands can be an effective, low cost and sustainable solution to ecological damage caused by abandoned mine drainage. |
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I.M. Wiseman, Environment Agency Wales, 19 Penyfai Lane, Furnace, Llanelli SA15 4EL, United Kingdom |
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0967-0513 |
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Recovery of an aquatic ecosystem following treatment of abandoned mine drainage with constructed wetlands; 2530429; United-Kingdom 25; Geobase |
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CBU @ c.wolke @ 17516 |
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206 |
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Author |
Rukin, N. |
Title |
Whittle mine water treatment system: In-river attenuation of manganese |
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Journal Article |
Year |
2003 |
Publication |
Land Contam. Reclam. |
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Volume |
11 |
Issue |
2 |
Pages |
137-144 |
Keywords |
Pollution and waste management non radioactive Groundwater problems and environmental effects geological abstracts: environmental geology (72 14 2) geomechanics abstracts: excavations (77 10 10) river water natural attenuation manganese water treatment mine drainage coal mine |
Abstract |
Much work has been undertaken on the design of treatment systems to remove iron from ochreous mine water discharges. Unlike iron, manganese removal is far more difficult and generally requires active chemical dosing rather than passive treatment. The need for manganese removal can therefore significantly change the economics, management attention and sustainability of a site. Understanding natural attenuation of manganese in river systems is therefore key to deciding whether (active) manganese treatment is needed to protect downstream receptors. Nuttall (2002, this volume) describes the effectiveness of the passive treatment system at Whittle in reducing both iron and manganese concentrations in ochreous mine waters. This paper discusses the results of in-river monitoring and provides evidence for manganese removal downstream of the discharge point. In addition to dilution, attenuation appears to be in the order of 20 to 50%, depending on relative rates of mine water discharge and river flows. Such attenuation means that active treatment may not be needed for the long-term operation of the Whittle scheme. Operation of the scheme commenced in July 2002, with monitoring to further examine evidence for manganese attenuation and any impact on the ecology of the recipient watercourses. |
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N. Rukin, Entec UK Ltd., 160-162 Abbey Foregate, Shrewsbury SY2 6BZ, United Kingdom |
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0967-0513 |
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Whittle mine water treatment system: In-river attenuation of manganese; 2530418; United-Kingdom 2; Geobase |
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CBU @ c.wolke @ 17521 |
Serial |
257 |
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Author |
Robinson, J.D.F. |
Title |
Wetland treatment of coal-mine drainage |
Type |
Journal Article |
Year |
1998 |
Publication |
Coal International |
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Volume |
246 |
Issue |
3 |
Pages |
114-115 |
Keywords |
coal mines; Europe; mine drainage; mines; pH; pollution; UK Coal Authority; United Kingdom; water; water treatment; Western Europe; wetlands 22, Environmental geology |
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1357-6941 |
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Wetland treatment of coal-mine drainage; 2000-013457; References: 1; illus. incl. 2 tables United Kingdom (GBR); GeoRef; English |
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CBU @ c.wolke @ 6129 |
Serial |
260 |
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