铁柱去除地下水中的Cr(Ⅵ)污染  

Removing Cr( Ⅵ) in the Polluted Groundwater by Iron Column

作　　者：高艳娇[1] 刘瑞[1] 宋铁红[2] 张鑫[1] 赵丽红[1] 肖静[1] 

机构地区：[1]辽宁工业大学土木建筑工程学院,锦州121001 [2]吉林建筑大学松辽流域水环境教育部重点实验室,长春130118

出　　处：《科学技术与工程》2016年第17期100-103,107,共5页Science Technology and Engineering

基　　金：国家自然科学基金青年基金(51308274)资助

摘　　要：采用铁粉柱去除地下水中的Cr（Ⅵ）污染,研究了柱长期运行期间p H的变化及Cr（Ⅵ）的去除率,并对铁粉表面生成物进行了SEM成像、EDS能谱分析及Roman光谱识别。实验结果表明,随着运行时间的延长,出水p H不断上升,出水Cr（Ⅵ）稳定在1.31-1.54 mg/L,Cr（Ⅵ）去除率稳定在84.6%-86.9%。铁粉表面有钝化现象,生成物为Fe2O3、Fe3O4和FeOOH类的氧化物。Iron powder column was used to remove Cr（ Ⅵ） of polluted groundwater,the change of effluent p H and the removal rate of Cr（ Ⅵ） were studied in a long-running process of column,and products on the surface of iron powder were identified by SEM,EDS and Roman spectrum. The experimental results showed that the effluent p H rose and Cr（ Ⅵ） concentration were stable between 1. 31 mg / L and 1. 54 mg / L,Cr（ Ⅵ） removal rate were stable between 84. 6% and 86. 9% with the extension of running time. Iron oxides such as Fe2O3,Fe3O4 and FeOOH precipitated on the iron surface made the iron surface passivation.

关 键 词：铁粉 六价铬 重金属 铁氧化物 

分 类 号：X523[环境科学与工程—环境工程]