摘要
用木本植物萼距花、杨树和旱柳作为泡沫板浮床栽培材料,研究其生长状况及对人工湿地污水的净化效果。结果表明,3种植物在N、P含量较高的污染水体中都可以正常生长。在生长旺盛季节内3种植物对污染水体中的COD的月平均去除率分别为45.02%、46.41%和62.44%,对TN的月平均去除率分别为40.27%、48.27%、63.29%,对TP月平均去除率分别27.76%、39.8%9和40.06%。其中对TN、TP的去除率显著高于对照植物凤眼莲。同时3种植物对重金属Hg、Cd、Cr、Cu具有较强的富集力,而对Mn、Zn和Pb具有超富集潜力。
With cuphea, poplar and salix as the planting stuffs on floating beds, the studies on their growth status and the purification effect on the waste water in consmacted wetland indicate that the three woody plants could grow in the waste water normally. During their growing season, their removal rates of COD per month were 45.02%, 46.41% and 62.44%, removal rates of TN were 40.27%, 48.27%, 63.29%, and removal rates of TP 40.27%, 48.27% and 63.29% respectively. Particularly, the removal rates ofTN, TP with plants of poplar and Salix were much higher than that of water hyacinth plant. Meanwhile, the three plants have great enrichment capacity of heavy metal Mn, Zn and Pb.
出处
《中南林业科技大学学报》
CAS
CSCD
北大核心
2012年第12期17-20,30,共5页
Journal of Central South University of Forestry & Technology
基金
湖南省环境科学与工程重点学科基金项目"生物质液体燃料资源植物光皮树品种选育和丰产栽培技术示范"(2011BAD22B08)
关键词
萼距花
杨树
旱柳
污染水体
去除率
重金属富集
Cuphea hyssopifolia
poplar
Salix matsudana
waste water
removal rate
heavy metal enrichment
