摘要
采用人工配制污水为实验用水进行室内水培实验,研究10种人工湿地中常见水生植物对氨氮和总磷的同化吸收能力,筛选出净化效果好的植物,构建植物组合,以单一植物为对照,研究植物组合对于提高氨氮、总磷净化效果的作用.结果表明:不同植物对氨氮、总磷的去除能力差别较大.千屈菜(Lythrumsalicaria)、菖蒲(Acoruscalamus)、美人蕉(Cannindica)、达香蒲(Typhadavidiana)对氨氮净化效果较好,初始浓度29.69mg/L、15d后,去除率96.6%、98.6%、87.7%、95.1%.美人蕉、凤眼莲(Eichhorniacrssipes)、千屈菜、石菖蒲(Acorustartarinowii)对TP净化效果较好,初始浓度4.44mg/L、15d后,去除率99.0%、54.6%、69.9%、36.7%.千屈菜与石菖蒲的组合能同时提高氨氮与总磷的净化效果;美人蕉与千屈菜的组合、菖蒲与美人蕉的组合、菖蒲与千屈菜的组合、美人蕉与石菖蒲的组合能提高总磷的净化效果.组合实验结果表明,适当的水生植物组合能提高氨氮与总磷的净化效果.
For selecting macrophyte species in constructed wetland, the abilities to remove NH4^＋-N and TP in the artificial sewage of 10 macrophyte species were investigated by the manipulative indoor experiment. Macrophyte species which had stronger purification effect were selected, then, assemblies were designed to compare with the single ones. The results showed that the abilities of different macrophyte species to remove nitrogen and phosphorous contrast sharply with one another. Lythrum salicaria, Acorus calamus, Cann indica, Typha davidiana had stronger ability to remove NH4^＋-N, when treated for 15 days, with an original concentration of 29.69mg/L, the removal rates were 96.6%, 98.6%, 87.7%, 95.1% respectively. Cann indica, Eichhornia crssipes, Lythrum salicaria, Acorus tartarinowii had stronger ability to remove TP, when treated for 15 days, with an original concentration of 4.44mg/L, the removal rates were 99.0%, 54.6%, 69.9%, 36.7%, respectively. In respect of the removal rates of NH4^＋-N and TP, the assembly of Lythrum salicaria and Acorus tartarinowii （54.2%, -32.6%） did better than Lythrum salicaria（28.7%, -41.5%,）, which indicated that the assembly could improve purification effect of NH4^＋-N and TP simultaneously. The assembly of Lythrum salicaria and Cann indica, the assembly of Acorus calamus and Cann indica, the assembly of Acorus calamus and Lythrum salicaria, the assembly of Cann indica and Acorus tartarinowii, all the assemblies had stronger removal abilities of TP than the single ones. The results of the investigation into selection and assembly of aquatic macrophyte species suggested that, proper assemblies could improve the purification effect of NH4^＋-N and TP in wastewater in comparison with the single ones.
出处
《湖泊科学》
EI
CAS
CSCD
北大核心
2008年第6期741-747,共7页
Journal of Lake Sciences
基金
我国近海海洋综合调查与评价(908)专项项目(908-01-ZH2)
国家自然科学基金项目(30670399)联合资助
关键词
人工湿地
水生植物
筛选
组合
氮
磷
净化效果
Constructed wetland
macrophyte
selection
assembly
nitrogen
phosphorus
purification effect
