Study on the treatment of acid mine wastewater by coal fly ash

DOI

10.2991/icmaee-14.2014.40How to use a DOI?

Keywords

AMD, Permeable Reactive Barrier, coal fly ash, modified, treatment effect

Abstract

This paper studied the feasibility of treating the acid mine drainage (AMD) by using a process of permeable reactive barrier (PRB), in which coal fly ash(CFA) was used as the reaction medium. The adjustment of pH and the removal of COD, sulfate and three kinds of heavy metal ions (Cd2 +, Cu2 +, Zn2 +) were illustrated. The results showed that the coal fly ash was effective in treating AMD, and the highest removal rates for COD and sulfate could be obtained in 12 h with 53.4% and60.4%, respectively; the maximum removal efficiencies of Cd2 +, Cu2 + and Zn2 + were42.9%, 74.8% and 26.7%; Besides, in this work, the modification of CFA was conducted by using an acid modification method. In comparison to the original CFA, the modified coal fly ash presented not too bad and displayed a better treatment effect toward the acid mine wastewater. MCFA have higher removal rate of heavy metal ions(Cd2 +, Cu2 + and Zn2 +), the removal rate of Cu2 + even reached 91.85%.

Copyright

© 2014, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Jianping Xu
AU  - Haitao Wan
PY  - 2014/03
DA  - 2014/03
TI  - Study on the treatment of acid mine wastewater by coal fly ash
BT  - Proceedings of the International Conference on Material and Environmental Engineering (ICMAEE 2014)
PB  - Atlantis Press
SP  - 150
EP  - 153
SN  - 1951-6851
UR  - https://doi.org/10.2991/icmaee-14.2014.40
DO  - 10.2991/icmaee-14.2014.40
ID  - Xu2014/03
ER  -