The Dynamic Experiment on Treating Acid Mine Drainage with Iron Scrap and Sulfate Reducing Bacteria Using Biomass Materials as Carbon Source  

作　　者：Xianjun Wang Junzhen Di Yanrong Dong Yu Yang Bing Liang Fankang Meng Tingting Wang Wenbo An Zengxin Li Jianzhi Guo 

机构地区：[1]College of Civil Engineering,Liaoning Technical University,Fuxin,123000,China [2]School of Mechanics and Engineering,Liaoning Technical University,Fuxin,123000,China [3]Fuxin Pingan Mining Co.,Ltd.,Fuxin,123000,China

出　　处：《Journal of Renewable Materials》2021年第1期163-177,共15页可再生材料杂志（英文）

基　　金：This work was supported by the National Natural Science Foundation of China(41672247,41102157);Liaoning Province’s“Program for Promoting Liaoning Talents”(XLYC1807159);2019 Nature Fund Project Guidance Plan of Liaoning Province(2019-zd-0044);2017 Youth Project of Education Department of Liaoning Province(LJ2017QL035).

摘　　要：The study is aimed at the problem of high content of Cr^(6+),Cr^(3+)and SO_(4)^(2-)is high and low pH value in acid mine drainage(AMD).Moreover,treatment of AMD by sulfate reducing bacteria(SRB)requires the addition of carbon source,while the treating effectiveness is not good enough on its own.The sugarcane slag,the corn cob and the sunflower straw were selected as the SRB carbon source cooperating with iron scrap to construct the dynamic columns 1,2 and 3.The mechanism of removing Cr^(6+),Cr^(3+),SO_(4)^(2-)and H+and the regularity of sustained release of carbon source and TFe release was studied in AMD.The removal efficiency of heavy metal ions,the ability of sustained release of carbon source,and the ability of adjusting acid by the three dynamic columns were compared.The result shows that the average removal rates of Cr^(6+),Cr^(3+)and SO_(4)^(2-)in effluent of dynamic column 1,filled by sugarcane slag,iron scrap and SRB,were 96.9%,67.1%and 54.3%.The average release of TFe and chemical oxygen demand(COD)were 4.4 and 287.3 mg/L.Its average pH was 6.98.Compared with the performance of dynamic columns 1,2 and 3,dynamic column 1 performed best in removing Cr^(6+),Cr^(3+)and SO_(4)^(2-)from AMD and controlling the release of COD and TFe,adjusting the pH of the solution.The study is of significance in treatment of AMD by taking for biomass materials as SRB carbon source in cooperation with iron scrap.

关 键 词：Biomass material sulfate reducing bacteria acid mine drainage iron scrap 

分 类 号：X70[环境科学与工程—环境工程]