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Jarvis, A.P.; Younger, P.L. |
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Design, construction and performance of a full-scare compost wetland for mine-spoil drainage treatment at quaking houses |
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Journal Article |
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Year |
1999 |
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Jciwem |
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13 |
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5 |
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313-318 |
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Wetlands and estuaries geographical abstracts: physical geography hydrology (71 6 8) composting constructed wetland design performance assessment United Kingdom EnglandCounty Durham |
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Abstract |
Acidic spoil-heap drainage, containing elevated concentrations of iron, aluminium and manganese, has been polluting the Stanley Burn in County Durham for nearly two decades. Following the success of a pilot-scale wetland (the first application of its kind in Europe), a full-scale wetland was installed. Waste manures and composts have been used as the main substrate which is contained within embankments constructed from compacted pulverized fuel ash. The constructed wetland, which cost less than £20,000 to build, has consistently reduced iron and aluminium concentrations and has markedly lowered the acidity of the drainage. A third phase of activities at the site aims to identify and eliminate pollutant-release 'hot spots' within the spoil. |
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0951-7359 |
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Design, construction and performance of a full-scare compost wetland for mine-spoil drainage treatment at quaking houses; 2227678; United-Kingdom 9; Geobase |
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CBU @ c.wolke @ 17546 |
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339 |
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Heal, K.; Younger, P.; Smith, K.; Quinn, P.; Glendinning, S.; Aumônier, J.; Dobbie, K.; McHaffie, H.; Dimoliatis, D.; Bush, A.; Bozika, E.; Tatsi, E.; Simpson, A.; Sweetman, R. |
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2004 |
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1-7 |
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hydrogeology mining water ochre treatment phosphorus recycling removal laboratory field investigation agriculture sewage fertiliser |
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University of Newcastle |
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2 |
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Jarvis Adam, P.; Dudgeon Bruce, A.; Younger Paul, L. |
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mine water 2004 – Proceedings International Mine Water Association Symposium |
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0-9543827-3-0 |
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A sustainable Use of Ochre from Mine Water Treatment Plants for phosphorus Removal and Recycling; 1; AMD ISI | Wolkersdorfer; FG 'de' 2 Abb., 5 Tab. |
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CBU @ c.wolke @ 9681 |
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356 |
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Álvarez, R.; Ordóñez, A.; Martínez, T.; Loredo, J.; Pendás, F.; Younger, P. |
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2004 |
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35-41 |
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hydrogeology mining water gold drainage cyanide treatment experimental work laboratory oxidation anaerobic aerobic wetlands |
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University of Newcastle |
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2 |
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Jarvis Adam, P.; Dudgeon Bruce, A.; Younger Paul, L. |
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mine water 2004 – Proceedings International Mine Water Association Symposium |
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0-9543827-3-0 |
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Passive Treatment for the Removal of Residual Cyanide in Drainage from closed Gold Mine Tailing Ponds; 1; AMD ISI | Wolkersdorfer; FG 'de' 2 Abb. |
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CBU @ c.wolke @ 9495 |
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485 |
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Author |
Younger, P.L. |
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Title |
Passive in situ remediation of acidic mine waste leachates: progress and prospects |
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2003 |
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Land Reclamation: Extending the Boundaries |
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253-264 |
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Keywords |
mine water treatment |
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The reclamation of former mining sites is a major challenge in many parts of the world. In relation to the restoration of spoil heaps (mine waste rock piles) and similar bodies of opencast backfill, key challenges include (i) the establishment of stable slopes and minimization of other geotechnical hazards (ii) developing and maintaining a healthy vegetative cover (iii) managing the hydrological behaviour of the restored ground. Significant advances have been made over the past four decades in relation to all four of these objectives. One of the most recalcitrant problems is the ongoing generation and release of acidic leachates, which typically emerge at the toes of (otherwise restored) spoil heaps in the form of springs and seepage areas. Such features are testament to the presence of a “perched” groundwater circulation system within the spoil, and their acidity reflects the continued penetration of oxygen to zones within the heaps which contain reactive pyrite (and other iron sulphide minerals). Two obvious strategies for dealing with this problem are disruption of the perched groundwater system and/or exclusion of oxygen entry. These strategies are now being pursued with considerable success where spoil is being reclaimed for the first time, by the installation of two types of physical barrier (dry covers and water covers). However, where a spoil heap has already been revegetated some decades ago, the destruction of an established sward or woodland in order to retro-fit a dry cover or water cover is rarely an attractive option for dealing with the “secondary dereliction” represented by ongoing toe seepages of acidic leachates. More attractive by far are passive treatment techniques, in which the polluted water is forced to flow through reactive media which serve to neutralize its acidity and remove toxic metals from solution. A brief historical review of the development of such systems reveals a general progression from using limestone as the key neutralizing agent, through a combined use of limestone and compost, to systems in which almost all of the neutralization is achieved by means of bacterial sulphate reduction in the saturated compost media of subsurface-flow bioreactors. In almost all cases, these passive treatment systems include an aerobic, surface flow wetland as the final “polishing” step in the treatment process. Such wetlands combine treatment functions (efficient removal of metals from the now-neutralized waters down to low residual concentrations, and re-oxygenating the water prior to discharge to receiving watercourses) with amenity value (attractive areas for recreational walking, bird-watching etc) and ecological value. |
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Passive in situ remediation of acidic mine waste leachates: progress and prospects; Isip:000183447100035; Times Cited: 0; ISI Web of Science |
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Call Number |
CBU @ c.wolke @ 17016 |
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158 |
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Author |
Younger, P.L. |
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Title |
Holistic remedial strategies for short- and long-term water pollution from abandoned mines |
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Journal Article |
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Year |
2000 |
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Transactions of the Institution of Mining and Metallurgy Section a-Mining Technology |
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109 |
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A210-A218 |
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Keywords |
abandoned mines acid mine drainage Europe mines mining planning pollution remediation United Kingdom water pollution Western Europe |
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Abstract |
Where mining proceeds below the water-table-as it has extensively in Britain and elsewhere-water ingress is not only a hindrance during mineral extraction but also a potential liability after abandonment. This is because the cessation of dewatering that commonly follows mine closure leads to a rise in the water-table and associated, often rapid, changes in the chemical regime of the subsurface. Studies over the past two decades have provided insights into the nature and time-scales of these changes and provide a basis for rational planning of mine-water management during and after mine abandonment. The same insights into mine-water chemistry provide hints for the efficient remediation of pollution (typically due to Fe, Mn and Al and, in some cases, Zn, Cd, Pb and other metals). Intensive treatment (by chemical dosing with enhanced sedimentation or alternative processes, such as sulphidization or reverse osmosis) is often necessary only during the first few years following complete flooding of mine voids. Passive treatment (by the use of gravity-flow geochemical reactors and wetlands) may be both more cost-effective and ecologically more responsible in the long term. By the end of 1999 a total of 28 passive systems had been installed at United Kingdom mine sites, including examples of system types currently unique to the United Kingdom. Early performance data for all the systems are summarized and shown to demonstrate the efficacy of passive treatment when appropriately applied. |
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0371-7844 |
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Holistic remedial strategies for short- and long-term water pollution from abandoned mines; Wos:000167240600013; Times Cited: 2; ISI Web of Science |
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CBU @ c.wolke @ 17458 |
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126 |
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