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| 复合垂直流人工湿地的脱氮机理及影响因素分析 | |
| 引用本文： | 张迎颖,丁为民,陈秀娟,李新宇,刘静.复合垂直流人工湿地的脱氮机理及影响因素分析[J].环境工程,2009,27(5). |
| 作者姓名： | 张迎颖 丁为民 陈秀娟 李新宇 刘静 |
| 作者单位： | 1. 南京农业大学工学院,南京,210031 2. 常州市排水管理处,江苏,常州,213002 3. 无锡市城北污水处理厂,江苏,无锡,214002 |
| 基金项目： | 江苏省普通高校研究生科研创新计划 |
| 摘 要： | 采用沸石和砾石作为填料,研究复合垂直流人工湿地处理农村生活污水的脱氮机理。试验结果表明:复合垂直流人工湿地对污水中氮的去除主要发生在下行流填料柱中,其去除机理主要是微生物对溶解态氮的硝化和反硝化作用;悬浮态氮沉积在填料孔隙中,会出现"氮释放"现象;水温、气水比、碳氮比、氮源形式等因素对湿地系统的脱氮效率有显著影响。 |
| 关 键 词： | 复合垂直流人工湿地 农村生活污水 脱氮机理 影响因素 |
ANALYSIS OF NITROGEN ROGEN REMOVAL MECHANISM AND INFLUENCE FACTORS IN INTEGRATED VERTICAL FLOW CONSTRUCTED WETLAND |
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| Zhang Yingying,Ding Weimin,Chen Xiujuan,Li Xinyu,Liu Jing.ANALYSIS OF NITROGEN ROGEN REMOVAL MECHANISM AND INFLUENCE FACTORS IN INTEGRATED VERTICAL FLOW CONSTRUCTED WETLAND[J].Environmental Engineering,2009,27(5). | |
| Authors: | Zhang Yingying Ding Weimin Chen Xiujuan Li Xinyu Liu Jing |
| Abstract: | The nitrogen removal mechanism was investigated in the integrated vertical flow constructed wetland which took zeolite and gravel as fillers to treat rural domestic sewage. Based on the experiments, the results showed that nitrogen was mostly removed in the down-flow column and the major dissolved nitrogen was removed by nitrification and denitrification of microogranism. Suspended-nitrogen which sedimentated in filler pore could cause nitrogen-releasing phenomenon. The factors including temperature, gas-flow ratio, C/N ratio and nitrogen-source forms had significant influence on nitrogen removal efficency. |
| Keywords: | integrated vertical flow constructed wetland rural domestic sewage nitrogen removel mechanism influence factors |
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