Study on the Treatment of Acid Mine Wastewater by Coal Fly Ash

被引：0

作者：

Xu Jianping ^{[1
]}

Wan Haitao ^{[1
]}

机构：

[1] Anhui Polytech Univ, Coll Biol & Chem Engn, Wuhu 241000, Peoples R China

来源：

PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON MATERIAL AND ENVIRONMENTAL ENGINEERING (ICMAEE 2014) | 2014年 / 57卷

关键词：

AMD; permeable reactive barrier; coal fly ash; modified; treatment effect; AQUEOUS-SOLUTION; HEAVY-METALS; REMOVAL; ADSORPTION; PHOSPHATE; CONCRETE;

D O I：

暂无

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

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% and 60.4%, respectively; the maximum removal efficiencies of Cd2+, Cu2+ and Zn2+ were 42.9%, 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%.

引用

页码：150 / 153

页数：4

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