Records |
Author |
Skousen, J.G.; Sexstone, A.; Ziemkiewicz, P.F. |
Title |
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Type |
Book Whole |
Year |
2000 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
131-168 |
Keywords |
acid mine drainage; ground water; pollution; remediation; surface water; waste management; water pollution; water treatment 22, Environmental geology Umwelt Bergbau AMD |
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Publisher |
American Society of Agronomy |
Place of Publication |
Madison, Wis. |
Editor |
Barnhisel Richard, I.; Darmody Robert, G.; Daniels, W.L. |
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Series Title |
Reclamation of Drastically Disturbed Lands |
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ISBN |
0-89118-146-6 |
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Notes |
Acid Mine Drainage Control and Treatment; 2; AMD ISI | Wolkersdorfer; SSZB; TUBAFG 01.4564 1 Abb., 3 Tab. |
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no |
Call Number |
CBU @ c.wolke @ 9907 |
Serial |
242 |
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Author |
Smith, I.J.H. |
Title |
AMD treatment, it works but are we using the right equipment? |
Type |
Journal Article |
Year |
2000 |
Publication |
Tailings and mine waste ' |
Abbreviated Journal |
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Volume |
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Issue |
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Pages |
419-427 |
Keywords |
Groundwater problems and environmental effects geomechanics abstracts: excavations (77 10 10) acid mine drainage conference proceedings methodology mine drainage remediation waste management |
Abstract |
For the past 40 years various approaches have been developed to treat acid waters coming from abandoned as well as operating mining operations. System designs have evolved to meet increasingly stringent discharge permit limits for treated water, as well as to provide solid disposal within economic constraints. A treatment system for remediation of acid mine drainage (AMD) or acid groundwater (AG) requires two main steps: 1. The addition of chemicals to precipitate dissolved metals contained in the waters, and if necessary, to coagulate the precipitated solids ahead of physical separation. 2. Physical separation of the precipitated solids from the water so the water can be lawfully discharged from the site. Choosing the appropriate technology and equipment results in the most efficient plant design, the lowest capital outlay, and minimum operating cost. The goal of these plants is to discharge liquids and solids able to meet standards. The separation of solids from liquids can be achieved through various means, including gravity settling, flotation, mechanical dewatering, filtration and evaporation. As important as the liquid solids separation unit operations are, they are driven by the chemistry of the water to be treated. The content of the dissolved solids will influence the quality and quantity of the solids produced during precipitation. Thus the two aspects must be integrated, with chemistry first, then mechanical engineering. This presentation will provide an overview of a number of liquid solids separation tools currently being used to treat AMD-AG at several sites in the USA. It will also discuss how their operations are impacted by the chemistry of their particular acid water feeds. The tools used include clarifier-thickeners, solids contact clarifiers, dissolved air flotation, polishing filters, membrane filters, and mechanical dewatering devices (belt and filter presses, vacuum filters, and driers). |
Address |
J.H. Smith III, SEPCO Incorporated, Fort Collins, CO, United States |
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Book; Conference-Paper; AMD treatment, it works but are we using the right equipment?; 2263351; Using Smart Source Parsing 00-Proceedings-of-the-7th-international-conference-Fort-Collins-January- 2000 Netherlands; Geobase |
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no |
Call Number |
CBU @ c.wolke @ 17541 |
Serial |
237 |
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Author |
Srivastave, A.; Chhonkar, P.K. |
Title |
Amelioration of coal mine spoils through fly ash application as liming material |
Type |
Journal Article |
Year |
2000 |
Publication |
J. Ind. Res. |
Abbreviated Journal |
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Volume |
59 |
Issue |
4 |
Pages |
309-313 |
Keywords |
Groundwater problems and environmental effects Pollution and waste management non radioactive geomechanics abstracts: excavations (77 10 10) geological abstracts: environmental geology (72 14 2) mitigation fly ash feasibility study acid mine drainage lime |
Abstract |
The feasibility of fly ash as compared to lime to ameliorate the low pH of acidic coal mine spoils under controlled pot culture conditions are reported using Sudan grass (Sorghum studanens) and Oats (Avena sativa) as indicator crops. It is observed that at all levels of applications, fly ash and lime significantly increase the pH of mine spoils, available phosphorus, exchangeable potassium, available sulphur and also uptake of phosphorus, potassium, sulphur and oven-dried biomass of both these test crops. The fly ash significantly decreases the bulk density of coal mine spoils, but, there is no effect on bulk density due to lime application. However, when the spoils are amended with either fly ash or lime, the root growth occurs throughout the material. Fly ash and lime do not cause elemental toxicities to the plants as evidenced from the dry matter production by the test crops. The results indicate that fly ash to be a potential alternative to lime for treating acidic coal mine spoils. |
Address |
P.K. Chhonkar, Div. of Soil Sci. and Agr. Chem., Indian Agricultural Research Inst., New Delhi 110 012, India |
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0022-4456 |
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Amelioration of coal mine spoils through fly ash application as liming material; 2364216; India 18; Geobase |
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no |
Call Number |
CBU @ c.wolke @ 17535 |
Serial |
234 |
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Author |
Taylor, J.; Waters, J. |
Title |
Treating ARD; how, when, where and why |
Type |
Journal Article |
Year |
2003 |
Publication |
Mining Environmental Management |
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Volume |
11 |
Issue |
3 |
Pages |
6-9 |
Keywords |
acid mine drainage; acid rock drainage; acidification; alkalinity; carbonate rocks; chemical properties; chemical reactions; coal; disposal barriers; economics; flocculation; ground water; heavy metals; human activity; ion exchange; limestone; mines; oxidation; oxides; permeability; pollution; porosity; pyrolusite; remediation; sedimentary rocks; surface water; waste disposal; waste management; water pollution; water treatment; wetlands 22, Environmental geology |
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0969-4218 |
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Treating ARD; how, when, where and why; 2004-045038; References: 8; illus. incl. 2 tables United Kingdom (GBR); GeoRef; English |
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CBU @ c.wolke @ 5528 |
Serial |
225 |
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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. |
Abbreviated Journal |
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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. |
Address |
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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no |
Call Number |
CBU @ c.wolke @ 17516 |
Serial |
206 |
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