工业水处理 ›› 2014, Vol. 34 ›› Issue (10): 29-32. doi: 10.11894/1005-829x.2014.34(10).029

• 试验研究 • 上一篇    下一篇

不同进水碳氮比对水平潜流人工湿地脱氮效果的影响

丁怡, 王玮, 王宇晖, 宋新山   

  1. 东华大学环境科学与工程学院, 上海 201620
  • 收稿日期:2014-08-23 出版日期:2014-10-20 发布日期:2014-11-01
  • 作者简介:丁怡(1988- ),博士研究生。电话:13818359926,E-mail:dingyi8866@gmail.com。
  • 基金资助:

    国家自然科学基金项目(51309053,51079028)

Effects of C/N ratio of different kinds of influent on the nitrogen removing effectiveness in horizontal subsurface flow constructed wetland

Ding Yi, Wang Wei, Wang Yuhui, Song Xinshan   

  1. College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
  • Received:2014-08-23 Online:2014-10-20 Published:2014-11-01

摘要:

在不同条件下对3种湿地植物枯落物进行水解,以获得相应的植物碳源。利用提取的植物碳源,研究了进水碳氮比对水平潜流人工湿地脱氮效果的影响。结果表明,对以硝态氮为氮源的反硝化过程,补充碳源对硝态氮和总氮的去除有明显的促进作用;对以氨氮和硝态氮为氮源的脱氮过程,随碳氮比的升高,硝态氮和总氮去除率增大,而氨氮由于受到溶解氧的制约,其去除率下降,并最终制约了总氮去除率的增大程度。

关键词: 植物碳源, 碳氮比, 脱氮, 水平潜流人工湿地

Abstract:

Three kinds of wetland plant litter have been hydrolyzed under different conditions in order to get corresponding plant carbon sources. By using extracted plant carbon sources,the effects of influent C/N ratios on nitrogen removing effectiveness are investigated in horizontal subsurface flow constructed wetland. The results show that for the denitrification process in which NH3--N is used as nitrogen source,adding carbon sources has obvious effect on the removal of NH3--N and TN. For the denitrification process in which NH4+-N and NH3--N are used as nitrogen sources,NH3--N and TN removing rate increases with the C/N ratio increases. The removing rate of NH4+-N decrea-ses,because of the restriction of dissolved oxygen,and finally has restricted the increasing efficiency of the removing rate of TN.

Key words: plant carbon source, C/N ratio, denitrification, horizontal subsurface flow constructed wetland

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