کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4425264 | 1309098 | 2011 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Long term remediation of highly polluted acid mine drainage: A sustainable approach to restore the environmental quality of the Odiel river basin Long term remediation of highly polluted acid mine drainage: A sustainable approach to restore the environmental quality of the Odiel river basin](/preview/png/4425264.png)
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 CaCO3 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 m3/day achieving an acid load reduction of 597 g·(m2 day)−1, more than 10 times higher than the generally accepted 40 g·(m2 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.
► Novel reactive mixture enable 20 month of high hydraulic conductivity.
► Acid load reduction improved 10 times comparing to vertical flow wetland.
► High biotic and abiotic iron oxidation and removal.
► Complete Al, As, Cd, Cr, Cu, Ti and V water removal.
Journal: Environmental Pollution - Volume 159, Issue 12, December 2011, Pages 3613–3619