复合污染状态下尾矿区有害化学品的迁移研究  

STUDY ON THE MIGRATION RULE OF COMPOUND MINERAL PROCESSING REAGENTS IN TAILING AERA OF COMPOUND CONTAMINATION

作　　者：栾和林[1] 喻晗[2] 邹畅[2] 杜予民[2] 姚文[1] 李继梅[1] 张立诚[1] 

机构地区：[1]北京矿冶研究总院,北京100044 [2]武汉大学资源与环境科学学院,武汉430072

出　　处：《环境化学》2006年第2期207-210,共4页Environmental Chemistry

基　　金：国家自然科学基金资助项目(批准号:50274016)

摘　　要：用混合尾矿浆及尾矿渣淋溶柱,研究选矿药剂在尾矿渣及尾矿废水中的静态分布及其淋溶作用, 结果表明:①选矿药剂对整个尾矿区都污染,即使是水溶性好的药剂,它们在尾矿渣中的静态分布也占有相当的比例,油溶性好的药剂多存在于尾矿渣中,尾矿污染为多种药剂的复合污染,各种药剂在尾矿渣及尾矿废水中的总浓度成倍加大;②用尾矿渣淋溶柱测得单一药剂的淋溶值:25号黑药>MIBC>CN->二号油>乙基黄药>丁基黄药>Y-89黄药．但多种药剂复合污染时,药剂的淋溶距离明显加大,其中CN-和 Y-89黄药加大近一倍．复合药剂污染加大药剂的残留期,也加大它们向地下水及其它水源迁移的几率．We studied the static distribution of mineral processing reagents in the tailing water and tailing soil in the tailing dam of the mineral area. It also studied the leaching behavior of the reagents in the tailing soil by using soil leaching column, which consists of mixed tailing water and tailing soil. The study showed following rules： ①when mineral processing reagents contaminate the tailing dam, they contaminate the whole tailing area——not only the tailing water, but also the tailing soil. Main of the water-soluble reagents was distributed in the tailing water, while some of them were also distributed in the tailing soil statically and the proportion cannot be ignored. The oil-soluble reagents are mainly distributed in tailing soil. When multifold reagents contaminated the tailing area, the total concentration of every reagents in tailing water and tailing soil increased greatly; ②the leaching distance of single reagent, which was detected by using tailing soil leaching column, followed the following order： 25^# dithiophosphate 〉 MIBC 〉 cyanide 〉 terpenol 〉 ethyl xanthate 〉 butyl xanthate 〉 Y-89 xanthate. When multifold reagents contaminated the tailing area, the leaching distance of above reagent increased remarkably, among which, cyanide and Y-89 xanthate increased almost one time. Compound contamination of the reagents prolonged the residual time of these noxious reagents, and on the other hand increased the probability of such reagents＇ migration to groundwater and other water sources.

关 键 词：复合污染 淋溶 

分 类 号：X132[环境科学与工程—环境科学]