首页 | 本学科首页   官方微博 | 高级检索  
     检索      

复合生态滤床用于重金属污染地表水体修复
引用本文:池年平,罗文连,廖熠,董秉直.复合生态滤床用于重金属污染地表水体修复[J].环境科学学报,2010,30(10):1971-1976.
作者姓名:池年平  罗文连  廖熠  董秉直
作者单位:1. 同济大学环境科学与工程学院,上海,200092;同济大学污染控制与资源化研究国家重点实验室,上海,200092
2. 中南林业科技大学资源与环境科学学院,长沙,410004
3. 四川理工学院,自贡,643000
基金项目:国家重点基础研究计划项目(973)
摘    要:以蛭石为滤床基质,研究了复合生态滤床对受重金属污染地表水体的修复效能.结果表明,复合生态滤床对重金属污染水体有较好的处理效果,在水力负荷为2.0m.3m-.2d-1时,系统对Cu、Zn、Pb和Cd的平均去除率分别达到81.60%、80.55%、83.20%、62.21%;按照国家《地表水环境质量标准》(GB3838-2002),出水重金属浓度达到Ⅱ类水质标准;出水COD值为9.7~38.3mg·L-1,达到Ⅰ类水质标准;出水NH4+-N达到1mg·L-1以下,达到Ⅲ类水质标准.滤床基质中铜离子含量稳定在30mg·kg-1左右,表明植物根系可以有效地吸收蛭石吸附的重金属,从而有效提高蛭石的再吸附能力,延长滤床工作周期.

关 键 词:生态滤床  重金属    地表水体  生态修复
收稿时间:1/16/2010 9:28:30 PM
修稿时间:5/3/2010 9:55:26 AM

Restoration of surface water polluted by heavy metals using a complex ecosystem filter bed
CHI Nianping,LUO Wenlian,LIAO Yi and DONG Bingzhi.Restoration of surface water polluted by heavy metals using a complex ecosystem filter bed[J].Acta Scientiae Circumstantiae,2010,30(10):1971-1976.
Authors:CHI Nianping  LUO Wenlian  LIAO Yi and DONG Bingzhi
Institution:1. College of Environment Science and Technology, Tongji University, Shanghai 200092; 2. State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092,School of Resource and Environment, Central South University of Forestry and Technology, Changsha 410004,Sichuan University of Science and Engineering, Zigong 643000 and 1. College of Environment Science and Technology, Tongji University, Shanghai 200092; 2. State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092
Abstract:Abstract: The restoration function of Complex ecosystem filter bed (CEFB) with vermiculite substrate for surface water contaminated by heavy metal was investigated. Experimental results showed that the CEFB was highly effectively in removal of heavy metal and the average removal rates of Cu2+, Zn2+, Pb2+ and Cd2+ were 81.60%, 80.55%, 83.20% and 62.21% respectively, under the hydraulic loading of 2.0m3/m2.d. The effluent concentration of heavy metal, COD and NH3-N complied with the water quality standard of grade II, grade I and grade III respectively, according to the Chinese Standard of Surface Water Environment Quality (GB3838-2002). The concentration of Cu2+ was stable at about 30mg/kg, which suggested that the heavy metal assimilated by vermiculite substrate could absorbed by plant roots. Thus the adsorption capacity of vermiculite was effectively improved, as well as the work cycle of the CEF.
Keywords:complex ecosystem filter bed  heavy-metal  surface water  ecological restoration
本文献已被 CNKI 万方数据 等数据库收录!
点击此处可从《环境科学学报》浏览原始摘要信息
点击此处可从《环境科学学报》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号