| 湿地植物对污水中氮、磷去除效果的试验研究 |
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| 引用本文： | 李涛,周律. 湿地植物对污水中氮、磷去除效果的试验研究[J]. 环境工程, 2009, 27(4): 25-28. DOI: 10.13205/j.hjgc.200904007 |
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| 作者姓名： | 李涛 周律 |
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| 作者单位： | 清华大学环境科学与工程系,北京,100084;清华大学环境科学与工程系,北京,100084 |
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| 基金项目： | 北京中心城地区湿地系统规划研究项目 |
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| 摘 要： | 采用室内试验和现场试验考察了黄花鸢尾、水葱和梭鱼草3种挺水植物对类污水处理厂二级出水中氮、磷的吸收速率、吸收容量和吸收贡献。结果表明:短期内,各种湿地植物污水中氮、磷的吸收速率比较稳定,但在整个生长周期内,各种植物对氮、磷的吸收速率却有较大变化,4月份,水葱对氮、磷的吸收速率最大,8月份,梭鱼草对氮、磷的吸收速率最大。在整个生长期内,黄花鸢尾对氮、磷的吸收容量一直保持最大,在10月下旬分别达到21.5和4.16 g/m2,因此其对二级出水中氮、磷去除的吸收贡献也最大,分别为30%和73%。这表明湿地植物的选择不仅要考查其对污染物的吸收速率,更要关注其对污染物的吸收容量,并且湿地植物的吸收作用对类二级出水中氮、磷的去除具有更加重要的意义。
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| 关 键 词： | 湿地植物 氮 磷 吸收速率 吸收容量 吸收贡献 |
CHARACTERISTICS OF SEVERAL PLANTS FOR REMOVING NITROGEN AND PHOSPHORUS FROM WASTEWATER IN CONSTRUCTED WETLAND |
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| Li Tao,Zhou Lü. CHARACTERISTICS OF SEVERAL PLANTS FOR REMOVING NITROGEN AND PHOSPHORUS FROM WASTEWATER IN CONSTRUCTED WETLAND[J]. Environmental Engineering, 2009, 27(4): 25-28. DOI: 10.13205/j.hjgc.200904007 |
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| Authors: | Li Tao Zhou Lü |
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| Affiliation: | Department of Environmental science and Engineering;Tsinghua University;Beijing 100084;China |
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| Abstract: | The absorption characteristics of three kinds of wetland plants,including Iris pseudacorus,Pontederia cordata and Scirpus validus,for removing nitrogen and phosphorus from wastewater resembling secondary effluent were studied by lab and pilot tests.The results showed that each wetland plant has a steady absorption rate of nitrogen and phosphorus from wastewater in short terms,but the absorption rate of nitrogen and phosphorus will vary from time to time in the whole growth period.Scirpus validus has the big... |
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| Keywords: | wetland plants nitrogen phosphorus absorption rate absorption capacity absorption contribution |
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