| 高效净化氮磷污水的湿地水生植物筛选与组合 |
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| 引用本文： | 韩潇源,宋志文,李培英.高效净化氮磷污水的湿地水生植物筛选与组合[J].湖泊科学,2008,20(6):741-747. |
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| 作者姓名： | 韩潇源 宋志文 李培英 |
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| 作者单位： | 中国科学院南京地理与湖泊研究所湖泊与环境国家重点实验室,南京,210008 |
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| 基金项目： | 国家自然科学基金项目(40603023);;中国科学院南京地理与湖泊研究所所长基金(0600211001)联合资助 |
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| 摘 要： | 抚仙湖流域未进行生态修复的磷矿废弃地面积142×10^4m^2，对磷矿废弃地污染物流失量和区域内径流污染物含量进行调查观测，并提出磷矿废弃地水污染防治对策．富磷矿石剖面和堆土场在风化作用和降雨淋溶作用下，大量氟、磷等元素释放，造成磷矿区内地表径流和地下渗流污染结合实测的磷矿废弃地面积和土柱淋溶实验得到的污染物淋溶量，估算得到磷矿废弃地每年F和TP的淋溶流失量为60．65t／a和2734t／a,随地表径流迁移进入抚仙湖的F和TP分别为22．58t／a和7．27t／a由此可见，磷矿开采是抚仙湖的一个持久污染源，对湖泊营养化演变进程起了推动作用。
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| 关 键 词： | 抚仙湖流域 磷矿 氟 磷 流失 |
| 收稿时间： | 2007/10/16 0:00:00 |
| 修稿时间： | 4/7/2008 12:00:00 AM |
Selection and assembly of macrophyte species in constructed wetland for purification of N and P in wastewater |
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| HAN Xiao-yuan,SONG Zhi-wen and LI Pei-ying.Selection and assembly of macrophyte species in constructed wetland for purification of N and P in wastewater[J].Journal of Lake Science,2008,20(6):741-747. |
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| Authors: | HAN Xiao-yuan SONG Zhi-wen and LI Pei-ying |
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| Institution: | State Key Laboratory of Lake Science and Environment;Nanjing Institute of Geography and Limnology;Chinese Academy of Sciences;Nanjing 210008;P.R.China |
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| Abstract: | 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. |
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| Keywords: | Lake Fuxian watershed phosphorite mined lands fluorine phosphorus losing process |
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