水生植物对垃圾渗滤液中重金属的吸附效果研究  

Research on Adsorption Effect of Heavy Metal in Landfill Leachate by Aquatic Plants

作　　者：侯晓龙[1] 马祥庆[1] 

机构地区：[1]福建农林大学林学院,福建福州350002

出　　处：《农业环境科学学报》2007年第6期2262-2266,共5页Journal of Agro-Environment Science

基　　金：福建省科技厅重大科学基金资助项目(2003I004)

摘　　要：通过水生植物在垃圾渗滤液中的培养实验,研究水浮莲、浮萍、水葫芦3种水生植物对垃圾渗滤液中重金属的吸附能力,探讨不同植物对重金属吸附的最佳吸附时间。结果表明,不同植物对重金属的吸附能力表现为:水浮莲>浮萍>水葫芦,其中水浮莲对垃圾渗滤液中Ni、Zn、Cr、Cd、Pb、Mn的最高吸附率分别可达50.21%、50.92%、100%、73.27%、89.99%、88.52%,吸附后的垃圾渗滤液可以达到污水排放标准,最适合应用于垃圾渗滤液中重金属污染的治理,但是对不同重金属最佳吸附时间存在差异。Through culturing aquatic plants on landfill leachate, the adaptive capacity and absorption capacities of heavy metals of three aquatic plants, hyacinth, water lettuce and duckweed, in landfill leachate were researched. The best absorption time to heavy metals was discussed. The results showed that the ability of removal of heavy metal was water lettuce〉duckweed〉hyacinth, indicating that water lettuce was the most suitable for the treatment of heavy metals in landfill leachate, with the largest removal rates of Ni, Zn, Cr, Cd, Pb and Mn 50.21%, 50.92%, 100%, 73.27%, 89.99% and 88.52%, respectively. The landfill leachate after absorption by water lettuce can meet the grade three standard of integrated wastewater discharge. The best absorption time varied with different heavy metals.

关 键 词：垃圾渗滤液 重金属 水生植物 吸附 

分 类 号：X703.5[环境科学与工程—环境工程]