Stockton Mine Acid Mine Drainage and Its Treatment using Waste Substrates in Biogeochemical Reactors (2009)
Type of ContentJournal Article
PublisherUniversity of Canterbury. Civil and Natural Resources Engineering
University of Canterbury. Geological Sciences
Thirteen acid mine drainage (AMD) sites were monitored at Stockton Coal Mine near Westport, New Zealand to identify and quantify contaminants of concern and delineate their spatial and temporal variability. Metals (primarily Fe and Al) were the key contaminants and measured at concentrations exceeding off-site compliance targets or the Australia and New Zealand Environmental and Conservation Council (ANZECC) water quality guidelines. Dissolved metal concentrations ranged from 0.05-1430 mg/L Fe, 0.200-627 mg/L Al, 0.0024-0.594 mg/L Cu, 0.0052-4.21 mg/L Ni, 0.019- 18.8 mg/L Zn, <0.00005-0.0232 mg/L Cd, 0.0007-0.0028 mg/L Pb, <0.001-0.154 mg/L As and 0.103- 29.3 mg/L Mn and pHs ranged from 2.04-4.31. Results of mesocosm-scale treatability tests showed that biogeochemical reactors (BGCRs) incorporating mussel shells, pine bark, wood fragments (post peel) and compost increased pH to >6.7 and sequestered ≥98.2% of the metal load from Manchester Seep AMD at the maximum recommended loading rates determined during this study (0.8 mol total metals/m3 substrate). An average of 20.0 kg/day (7.30 tonnes/year) of metals could be removed from Manchester Seep AMD employing BGCRs. Currently, this AMD is effectively treated further downstream by the Mangatini fine limestone dosing plant; however, in the interest of assessing more cost-effective technologies, this research investigated BGCRs as a passive treatment option.
CitationMcCauley, C., O’Sullivan, A.D., Weber, P., Trumm, D. (2009) Stockton Mine Acid Mine Drainage and Its Treatment using Waste Substrates in Biogeochemical Reactors Biogeochemical Reactors. New Zealand Journal of Geology and Geophysics, in print.
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Keywordsacid mine drainage (AMD); Stockton Coal Mine; mine-water chemistry; biogeochemical reactors (BGCRs); geochemistry; vertical-flow wetlands (VFWs); biochemical reactors (BCRs); sulphate-reducing bioreactors
ANZSRC Fields of Research05 - Environmental Sciences::0502 - Environmental Science and Management::050206 - Environmental Monitoring
41 - Environmental sciences::4104 - Environmental management::410405 - Environmental rehabilitation and restoration
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McCauley, C.; O'Sullivan, A.D.; Weber, P.; Trumm, D. (University of Canterbury. Civil and Natural Resources Engineering, 2008)Acid mine drainage (AMD) at Stockton Coal Mine emanates from the oxidation of pyrite within carbonaceous mudstones during mining, which subsequently releases acidity resulting in metals leaching from overburden. Water ...
McCauley, C.; O'Sullivan, A.D.; Weber, P.; Trumm, D. (University of Canterbury. Civil and Natural Resources Engineering, 2008)Acid mine drainage (AMD) at Stockton Coal Mine is generated from the oxidation of pyrite in carbonaceous mudstones exposed during surface mining. Acidity production causes metals such as Fe and Al to leach from overburden ...
Performance of Mesocosm Sulfate-Reducing Bioreactors for Treating Acid Mine Drainage in New Zealand McCauley, C.A.; O'Sullivan, A.D.; Weber, P.A.; Trumm, D.A. (University of Canterbury. Civil and Natural Resources Engineering, 2008)Water chemistry was monitored monthly for ten months from an acid mine drainage (AMD) seep emanating at Stockton Coal Mine within the Mangatini watershed in New Zealand. Metal concentrations of the seep water were Fe ...