| 氮磷在阶式水生植物床中的去除效果及组成变化 |
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| 引用本文： | 宋海亮,吕锡武,李先宁,稻森悠平.氮磷在阶式水生植物床中的去除效果及组成变化[J].环境工程学报,2005,6(9):54-57. |
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| 作者姓名： | 宋海亮 吕锡武 李先宁 稻森悠平 |
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| 作者单位： | 东南大学环境科学与工程系,南京,210096;日本国立环境研究所,日本,筑波,305-0053 |
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| 基金项目： | 国家自然科学基金资助项目(50378014)，江苏省自然科学基金资助项目(BK2004075)，江苏省环保厅科技基金资助项目(苏环科2002-19) |
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| 摘 要： | 利用串联运行的阶式水生植物床净化富营养化河水。考察了不同形态的氮磷在处理前后的浓度变化,在此基础上阐述水生植物床去除富营养化水体中氮磷的过程与机理。在水力负荷为74cm/d的条件下,总磷和总氮的去除率分别达73.1%和64.5%。植物根系对悬浮物的截留对去除河水中的氮磷起关键作用。采用多级串联的运行方式能有效克服一般湿地运行一段时间后因沉积物释放作用而引起处理水溶解性营养盐浓度上升的难题。
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| 关 键 词： | 水生植物床 河水 串联运行 富营养化 湿地 |
| 文章编号： | 1008-9241(2005)09-0054-04 |
| 修稿时间： | 2004年4月25日 |
The removal effect and composition variations of nitrogen and phosphorus in step aquatic-plant bed system |
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| Song Hailiang,Lu Xiwu,Li Xianning,Yuhei Inamori.The removal effect and composition variations of nitrogen and phosphorus in step aquatic-plant bed system[J].Techniques and Equipment for Environmental Pollution Control,2005,6(9):54-57. |
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| Authors: | Song Hailiang Lu Xiwu Li Xianning Yuhei Inamori |
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| Institution: | Song Hailiang~1 Lu Xiwu~1 Li Xianning~1 Yuhei Inamori~2 |
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| Abstract: | By using three-stage series-operation of aquatic-plant bed system to purify eutrophicated river water, the concentration variations of different nitrogen and phosphorus species of inflow and outflow were investigated. The processes and mechanisms of nitrogen and phosphorus removal from eutrophicated river water by aquatic-plant bed system were elucidated. The removal rates of total phosphorus and total nitrogen reached 73.1% and 64.5% respectively under the hydraulic loading rate of 74 cm/d. The function of root mat blocking suspended solid played a key role in removing nitrogen and phosphorus from river water. The style of series-operation overcame the shortcoming of common wetland that soluble nutrient concentrations in effluent arisen causing by sediment release after operating for a long time. |
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| Keywords: | aquatic-plant bed river water series-operation eutrophication wetland |
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