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Long term remediation of highly polluted acid mine drainage: a sustainable approach to restore the environmental quality of the Odiel river basin.
- Source :
-
Environmental pollution (Barking, Essex : 1987) [Environ Pollut] 2011 Dec; Vol. 159 (12), pp. 3613-9. Date of Electronic Publication: 2011 Sep 08. - Publication Year :
- 2011
-
Abstract
- During 20 months of proper operation the full scale passive treatment in Mina Esperanza (SW Spain) produced around 100 mg/L of ferric iron in the aeration cascades, removing an average net acidity up to 1500 mg/L as CaCO(3) and not having any significant clogging problem. Complete Al, As, Cd, Cr, Cu, Ti and V removal from the water was accomplished through almost the entire operation time while Fe removal ranged between 170 and 620 mg/L. The system operated at a mean inflow rate of 43 m(3)/day achieving an acid load reduction of 597 g·(m(2) day)(-1), more than 10 times higher than the generally accepted 40 g·(m(2) day)(-1) value commonly used as a passive treatment system designing criteria. The high performance achieved by the passive treatment system at Mina Esperanza demonstrates that this innovative treatment design is a simple, efficient and long lasting remediation option to treat highly polluted acid mine drainage.<br /> (Copyright © 2011 Elsevier Ltd. All rights reserved.)
Details
- Language :
- English
- ISSN :
- 1873-6424
- Volume :
- 159
- Issue :
- 12
- Database :
- MEDLINE
- Journal :
- Environmental pollution (Barking, Essex : 1987)
- Publication Type :
- Academic Journal
- Accession number :
- 21862191
- Full Text :
- https://doi.org/10.1016/j.envpol.2011.08.003