室内绿狐尾藻湿地系统对高氨氮废水的净化作用

余红兵; 何洋; 李红芳; 刘锋; 张树楠; 王迪; 肖润林

doi:10.11829/j.issn.1001-0629.2016-0272

室内绿狐尾藻湿地系统对高氨氮废水的净化作用

余红兵¹,
何洋^2,3,4,
李红芳⁵,
刘锋⁵,
张树楠^2,3,4,
王迪^2,3,4,
肖润林⁵

1.
湖南城市学院建筑与城市规划学院,湖南益阳 413000
2.
1. 中国科学院亚热带农业生态研究所亚热带农业生态过程重点实验室,湖南长沙 410125
3.
2. 中国科学院大学,北京 100049
4.
5.
中国科学院亚热带农业生态研究所亚热带农业生态过程重点实验室,湖南长沙 410125

基金项目:

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十二五&#x0201d

国家科技支撑计划项目(2014BAD14B05)

湖南省战略性新兴产业成果转化项目(2015GK1014)

湖南省科技支撑计划(2015NK3003)

摘要: 本研究以绿狐尾藻(Myriophyllum elatinoides)湿地系统为对象,分析绿狐尾藻湿地系统中NH4+-N的去除规律及氮质量平衡。结果表明,试验第28天,在200和400 mg·L-1 N H4+-N两个处理中,水体全氮(TN)去除率分别为86.1%和77.7%,N H4+-N去除率分别为89.8%和78.8%。根据氮质量平衡得出,在200和400 mg·L-1 N H4+-N两个处理中分别有14.7%和30.2%的外源N H4+-N直接被底泥吸附,25.3%和11.0%转化成底泥NO3--N,29.7%和12.7%被绿狐尾藻直接吸收利用,14.0%和23.3%残留在水体,剩余16.3%和22.8%可能被微生物硝化反硝化作用去除。研究结果表明,绿狐尾藻对氨氮有较好的净化效果,为其在人工湿地的应用提供了科学依据。

关键词:

English

Purification effects of indoor Myriophyllum elatinoides wetland system on ammonium nitrogen wastewater

1.
College of Architecture and Urban Planning, Hunan City University, Yiyang, 413000, China
2.
1. Key Laboratory of Agro-ecological Processes in Subtropical Regions, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China
3.
2. University of Chinese Academy of Science, Beijing 100049, China
4.
5.
Key Laboratory of Agro-ecological Processes in Subtropical Regions, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China

Received Date: 2016-05-22
Publish Date: 2016-11-19

Abstract: In the present study, the ammonium nitrogen removal characteristics and nitrogen mass balance in indoor Myriophyllum elatinoides wetland system were analysis. The results showed after 28 days treatment with 200 and 400 mg·L-1 NH4+-N, the removal rates of total nitrogen (TN) and N H4+-N in artificial wastewater were 77.7% and 86.1% , 89.8% and 78.8%, respectively. According to the nitrogen mass balance, 14.7% and 30.2% of the exogenous N H4+-N were transformed into sediment N H4+-N and 25.3% and 11% of exogenous N H4+-N were transformed into sediment NO3-N by 200 mg·L-1 N H4+-N and 400 mg·L-1 N H4+-N treatments; 29.7% and 12.7% of exogenous N H4+-N was absorbed by M. elatinoides; 14.0% and 23.3% of exogenous N H4+-N became residual nitrogen in the water and 16.3% and 22.8% of exogenous N H4+-N eventually to nitrification and denitrification removal. The results suggested that M. elatinoides can effectively purify ammonium nitrogen which provides scientific basis for its application in artificial wetland.

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室内绿狐尾藻湿地系统对高氨氮废水的净化作用

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Purification effects of indoor Myriophyllum elatinoides wetland system on ammonium nitrogen wastewater

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