| 再力花/菖蒲生物湿地床去除河水中氮磷的试验 |
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| 引用本文： | 王骥,张兰英,卢少勇,甘树,金相灿.再力花/菖蒲生物湿地床去除河水中氮磷的试验[J].吉林大学学报(地球科学版),2012(Z1):408-414. |
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| 作者姓名： | 王骥 张兰英 卢少勇 甘树 金相灿 |
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| 作者单位： | 吉林大学环境与资源学院;中国环境科学研究院湖泊工程技术中心/湖泊环境研究中心/国家环境保护湖泊污染控制重点实验室;湖南农业大学资源环境学院 |
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| 基金项目： | 国家水体污染控制与治理科技重大专项(2008 ZX07101-012009ZX07101-09);国家高技术研究发展计划项目(2005AA60101005) |
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| 摘 要： | 采用再力花和菖蒲构建湿地床,以考察其对污染河水的净化效果。6个月的连续试验表明:在水力负荷为0.24 m3/(m2.d)、植物种植密度大于158株/m2的条件下,2种植物存活率均大于93%,说明植物能适应低污染负荷、高种植密度的无土培养环境;再力花和菖蒲湿地床月均去除率分别为:总氮(TN),48.22%～78.53%和43.23%～72.42%;总磷(TP),77.62%～85.67%和58.07%～80.77%。再力花湿地床对TN、TP的净化效果好于菖蒲湿地床;2种植物吸收N、P含量分别占去除总量的比例:N为44.14%、37.75%,P为73.43%、62.05%。湿地床技术可有效去除来水中的TN、TP,通过植物吸收作用累积N、P含量较高,不同种类的植物构建湿地床对污染河水中N、P去除效果存在显著差异,且硝化反硝化和植物吸收是去除N的主要途径,而植物吸收是去除P的有效手段。
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| 关 键 词： | 生物湿地床 再力花 菖蒲 河水 氮 磷 |
Removal of N and P from River Water Treated by the Bio-rack Wetland Planted with Thalia Dealbata and Acorus Calamus Linn |
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| Wang Ji,Zhang Lan-ying,Lu Shao-yong,Gan Shu,Jin Xiang-can.Removal of N and P from River Water Treated by the Bio-rack Wetland Planted with Thalia Dealbata and Acorus Calamus Linn[J].Journal of Jilin Unviersity:Earth Science Edition,2012(Z1):408-414. |
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| Authors: | Wang Ji Zhang Lan-ying Lu Shao-yong Gan Shu Jin Xiang-can |
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| Institution: | 1.College of Environmental and Resource Sciences,Jilin University,Changchun 130026,China 2.Engineering and Technology Center of Lake Research Center of Lake Environment State Environmental Protection Key Laboratory for Lake Pollution Control,Chinese Research Academy of Environment Sciences,Beijing 100012,China 3.College of Resources and Environment,Hunan Agriculture University,Changsha 410128,China |
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| Abstract: | Nitrogen and phosphorus removal were studied in the bio-rack systems with Thalia dealbata and Acorus calamus Linn for purifying river water.The results showed the survived rates of two plants were more than 93%,when Hydraulic loading was controlled at 0.24 m3/(m2·d) and plants density was more than 158 plants/m2.This indicated that the plants could be adaptable Under the condition of lower pollution and higher plant density.Total nitrogen(TN) average removal rates per month were 48.22%-78.53% and 43.23%-72.42%,total phosphorus(TP) average removal rates per month were 77.62%-85.67% and 58.07%-80.77% in the bio-rack wetland planted with Thalia dealbata and Acorus calamus Linn respectively.The removal rates for N and P were higher in the bio-rack wetland planted with Thalia dealbata than wetland planted with Acorus calamus Linn.Nitrogen uptake by plants accounted for 44.14%,41.08% in the Thalia dealbata and Acorus calamus Linn systems,while for P,the removal ratio was 73.43%,62.05% respectively.It indicated that the bio-rack wetland was an efficient way for purifying river water,the contribution rate on N,P removal of plants assimilation was obvious,and different plants species had significantly difference for the bio-rack wetland removing N and P of river water.The study also showed that nitrification/denitrification process and plant uptake process are major removal pathways for TN,while plant uptake is an effective removal pathway for TP. |
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| Keywords: | bio-rack wetland Thalia dealbata Acorus calamus Linn river water nitrogen phosphorus |
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