水葱对矿山排水中重金属的去除研究  

The Removal Effection of Scirpus Validus on Heavy Metals in Mine Drainage

作　　者：黄振东[1] 靖德兵[1] 王东[1] 王昭[1] 

机构地区：[1]首都师范大学生命科学学院,北京100048

出　　处：《首都师范大学学报（自然科学版）》2012年第5期31-36,共6页Journal of Capital Normal University：Natural Science Edition

摘　　要：通过研究湿地挺水植物水葱(Scirpus validus)对矿山排水中重金属(Cu、Zn、Ni、Mn、Cd)的去除效果,发现水葱对Ni、Mn、Cd的去除效果非常好,浓度去除率均达到80%以上,对Cu、Zn的浓度去除率稍微偏低.水葱吸收到体内的重金属元素主要集中在地下根部;水葱对各种金属元素的去除存在一定的协同作用;水葱蒸腾量的增加在一定程度上能促进水葱对重金属的去除.通过水葱处理后的重金属废水达到GB 8978—1996国家综合排放一级标准.A hydroponic experiments for emergent plant Scirpus validus was carried out to measure it＇ s removal effection on 5 heavy metals（ Cu,Zn,Ni,Mn,Cd） in mine drainage. The results suggested that Scirpus validus had an effective concentration removal rate on Ni,Mn, Cd, with a high rate exceed 80% ;In addition,it＇s concentration removal rate on Cu,Zn was not so good. It was proved that the heavy metals absorbed into Scirpus validus were mainly gathered in it＇s root under ground, and there was a synergistic effect between 5 heavy metals when they been removed. Meanwhile, a positive correlation between Scirpus validus＇ s transpiration and it＇ s removal effection on 5 heavy metals has been proved, finally, after purify with Scirpus validus, the mine drainage has reached the first level of integrated wastewater discharge standard（ GB 8978--1996）.

关 键 词：湿地植物 矿山排水 重金属 水葱 

分 类 号：X751[环境科学与工程—环境工程]