| 植物秸秆作补充碳源对人工湿地脱氮效果的影响 |
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| 引用本文： | 魏星,朱伟,赵联芳,陈家伟. 植物秸秆作补充碳源对人工湿地脱氮效果的影响[J]. 湖泊科学, 2010, 22(6): 916-922 |
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| 作者姓名： | 魏星 朱伟 赵联芳 陈家伟 |
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| 作者单位： | 河海大学环境学院,南京,210098;河海大学环境学院,南京,210098;水资源高效利用与工程安全国家工程研究中心,南京,210098 |
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| 基金项目： | 国家自然科学基金项目(50979028); 水利部公益性行业科研专项经费项目(200801065,200701045)资助 |
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| 摘 要： | 研究以芦苇杆、树枝及芦苇杆+树枝这三组植物秸秆作为碳源,分别补充于人工湿地基质表层(0-5cm)和中层(30-35cm)对脱氮效果的影响.试验结果表明,在进水条件下,补充植物秸秆能将人工湿地系统的TN去除率从44%提高到53%-66%,秸秆材料种类对脱氮效果影响不显著;对于三组植物秸秆材料,补充在中层均能较表层更好地提高脱氮效果,而且具有更强的抵抗进水氮负荷冲击能力.沿程氮形态分析表明:补充植物秸秆后,可以解除由于有机碳源不足产生的硝氮、亚硝氮积累,提高总氮的去除效率;而秸秆补充于中层,由于未干扰进水氨氮的硝化过程,增加底物硝氮、亚硝氮的反硝化反应,从而较之补充于表层有更好的脱氮效果.
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| 关 键 词： | 人工湿地 植物秸秆 碳源 氮 反硝化 |
| 收稿时间： | 2010-01-29 |
| 修稿时间： | 2010-04-28 |
Effect of the carbon source of plant straw supplement in constructed artificial wetland on nitrogen removal |
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| WEI Xing,ZHU Wei,ZHAO Lianfang and CHEN Jiawei. Effect of the carbon source of plant straw supplement in constructed artificial wetland on nitrogen removal[J]. Journal of Lake Science, 2010, 22(6): 916-922 |
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| Authors: | WEI Xing ZHU Wei ZHAO Lianfang CHEN Jiawei |
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| Affiliation: | WEI Xing1,ZHU Wei1,2,ZHAO Lianfang1 & CHEN Jiawei1(1:College of Environment,Hohai University,Nanjing 210098,P.R.China)(2:National Engineering Research Center of Water Resources Efficient Utilization and Engineering Safety,P.R.China) |
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| Abstract: | Effect of the carbon sources of three plant straws-reed,branch and reed+branch supplement in constructed wetland.The straws filling surface layer (0-5cm) and middle layer (30-35cm) on nitrogen removal was studied.Experimental result shows that,supplement constructed wetland with plant straw under the condition of experimental influent could enhance system TN removal rate from 44%to 53%-66%,and the type difference of plant straws has no significant effect on nitrogen removal.Supplement of these three plant s... |
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| Keywords: | Constructed wetland plant straw carbon source nitrogen denitrification |
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