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Wetlands as a means to reduce the environmental impact of mine drainage waters
Linköping University, The Tema Institute, Department of Water and Environmental Studies. Linköping University, Faculty of Arts and Sciences.
2003 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

In many mining regions of the world, pollution of surface water and groundwater by drainage water originating from mines aiming waste poses either a serious threat to the environment, or a severe environmental problem. During the last two and a half decades, treatment of mine drainage water in constructed and natural wetlands has emerged as an alternative to more conventional methods to handle the problem. In this thesis, the major biogeochemical processes behind metal immobilization in wetlands are summarized. Factors that influence the efficiency and longevity of these processes are discussed based on a review of previous experiences from wetlands exposed to mine drainage waters. The potential for successful treatment is largely determined by the characteristics of the drainage, the morphology of the wetland, and the degree of maintenance planned. In maintenance-free wetland, factors that have to be considered include: changes in drainage water production and wetland performance over the years, the total metal accumulating capacity of the wetland, and the post treatment integrity of the wetland. Results from a case study indicated that no or little immobilization of metals occured in natural wetlands situated along a mining region recipient (the river Vormbäcken, northern Sweden). However, Fe supplied from the catchment area appeared to favor the fraction of As, Cu, and Pb recovered in particles, a mechanism that could be of interest for the polishing of treated mine drainage waters, especially when combined with settling in a downstream wetland. Laboratory experiments showed that such a process is likely to be favored by addition of Fe in its ferrous form, higher water temperatures, presence of Ca, and absence of dissolved organic matter.

Place, publisher, year, edition, pages
Linköping: Linköping University Electronic Press, 2003. , 165 p.
Series
Linköping Studies in Arts and Science, ISSN 0282-9800 ; 278
Keyword [sv]
Lakvatten, våtmarker, vattenrening, miljö
National Category
Oceanography, Hydrology, Water Resources
Identifiers
URN: urn:nbn:se:liu:diva-4708ISBN: 91-7373-707-0 (print)OAI: oai:DiVA.org:liu-4708DiVA: diva2:20722
Public defence
2003-09-19, Elysion, Hus T, Campus Valla, Linköpings universitet, Linköping, 10:15 (English)
Supervisors
Available from: 2003-10-26 Created: 2003-10-26 Last updated: 2012-01-25Bibliographically approved
List of papers
1. Changes in water chemistry along a river receiving treated AMD: the influence of different kinds of wetlands, phase 1
Open this publication in new window or tab >>Changes in water chemistry along a river receiving treated AMD: the influence of different kinds of wetlands, phase 1
2000 (English)In: Proceedings from the 5th International Conference on Acid Rock Drainage: The Society for Mining, Metallurgy, and Exploration, Inc., Littleton, Colorado, USA, 2000, 1185-1192 p.Conference paper, Published paper (Other academic)
National Category
Oceanography, Hydrology, Water Resources
Identifiers
urn:nbn:se:liu:diva-13429 (URN)
Available from: 2003-10-26 Created: 2003-10-26
2. Metal concentrations along a mining region recipient: some aspects on water quality
Open this publication in new window or tab >>Metal concentrations along a mining region recipient: some aspects on water quality
2001 (English)In: Proceedings from Securing the Future: International Conference on Mining and the Environment, Skellefteå, Sweden, 2001, 777-786 p.Conference paper, Published paper (Other academic)
Abstract [en]

This paper summarizes parts of the results from a sampling campaign conducted along a mining region recipient, the Vormbäcken River, in northern Sweden during 1999 and 2000. Surface water from seven stations along the river, and the effluent water from an active mine, were sampled on six occasions. On two of these occasions, additional samples were collected both from the river and its major tributaries. Applying a catchment perspective, special emphasis was given to identify sources and potential sinks to different metals (Zn, Cu, Cd, Ca, and As) encountered in the river water. Base parameters such as pH, total organic carbon (TOC), and SO42- were also investigated. The aim of the selected approach was both to quantify the importance of natural immobilization processes occurring in wetlands and a lake along the river, as a basis for a further development within the field of passive treatment of acid rock drainage (ARD), and to point at issues within the catchment area that can be dealt with to improve the overall water quality.

National Category
Oceanography, Hydrology, Water Resources
Identifiers
urn:nbn:se:liu:diva-13430 (URN)
Available from: 2003-10-26 Created: 2003-10-26 Last updated: 2009-06-04
3. Present patterns of metal concentrations and loadings in a small river in a mining region
Open this publication in new window or tab >>Present patterns of metal concentrations and loadings in a small river in a mining region
Manuscript (Other academic)
Identifiers
urn:nbn:se:liu:diva-13431 (URN)
Available from: 2003-10-26 Created: 2003-10-26 Last updated: 2010-01-13
4. River water metal speciation in a mining region – the influence of wetlands, liming, tributaries, and groundwater
Open this publication in new window or tab >>River water metal speciation in a mining region – the influence of wetlands, liming, tributaries, and groundwater
2004 (English)In: Water, Air, and Soil Pollution, ISSN 0049-6979, Vol. 152, no 1-4, 173-194 p.Article in journal (Refereed) Published
Keyword
Ca, DOC, Fe, metals, organic complexes, particles, POC, the Skellefte mining district, treatment
National Category
Oceanography, Hydrology, Water Resources
Identifiers
urn:nbn:se:liu:diva-13432 (URN)10.1023/B:WATE.0000015355.50606.a5 (DOI)
Available from: 2003-10-26 Created: 2003-10-26
5. Repartitioning of river water trace metals following addition of minor amounts of ferrous iron
Open this publication in new window or tab >>Repartitioning of river water trace metals following addition of minor amounts of ferrous iron
2003 (English)In: Proceedings from the 6th International Conference on Acid Rock Drainage: Australasian Institute of Mining and Metallurgy, Carlton, Victoria, Australia, 2003, 1125-1128 p.Conference paper, Published paper (Other academic)
National Category
Oceanography, Hydrology, Water Resources
Identifiers
urn:nbn:se:liu:diva-13433 (URN)
Available from: 2003-10-26 Created: 2003-10-26
6. Particulate Fe as a scavenger of As, Cu, Pb, and Zn in simulated contaminated river waters
Open this publication in new window or tab >>Particulate Fe as a scavenger of As, Cu, Pb, and Zn in simulated contaminated river waters
Manuscript (Other academic)
Identifiers
urn:nbn:se:liu:diva-13434 (URN)
Available from: 2003-10-26 Created: 2003-10-26 Last updated: 2010-01-13
7. Mechanisms of metal immobilisation in mine drainage treatment wetlands – a sustainability perspective
Open this publication in new window or tab >>Mechanisms of metal immobilisation in mine drainage treatment wetlands – a sustainability perspective
2003 (English)In: Proceedings from the 6th International Conference on Acid Rock Drainage: The Australasian Institute of Mining and Metallurgy, Carlton, Victoria, Australia, 2003, 817-823 p.Conference paper, Published paper (Other academic)
National Category
Oceanography, Hydrology, Water Resources
Identifiers
urn:nbn:se:liu:diva-13435 (URN)
Available from: 2003-10-26 Created: 2003-10-26

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Sjöblom, Åsa

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