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复合垂直流人工湿地污水处理系统硝化与反硝化作用
引用本文:贺锋,吴振斌,陶菁,成水平,付贵萍.复合垂直流人工湿地污水处理系统硝化与反硝化作用[J].环境科学,2005,26(1):47-50.
作者姓名:贺锋  吴振斌  陶菁  成水平  付贵萍
作者单位:中国科学院水生生物研究所淡水生态与生物技术国家重点实验室,武汉,430072
基金项目:国家高技术研究发展计划(863计划)项目(2002AA601021);国家杰出青年基金项目(39925007);中科院知识创新工程重要方向项目(KSCX2-SW-102)
摘    要:研究了复合垂直流人工湿地各基质层的硝化与反硝化菌数量以及硝化与反硝化作用强度.结果表明,基质中硝化菌数量为7.5×103~1.1×105MPN·g-1,反硝化菌数量为7.5×106~1.1×107 MPN·g-1.硝化作用强度为0.01~6.35μg·(g·d)-1,反硝化作用强度为3.37~4.19μg·(g·d)-1.沿水流方向硝化菌数量和硝化作用强度明显降低,其变化趋势呈显著正相关(r=0.9661,p<0.001).反硝化菌数量和反硝化作用强度比较稳定,沿水流方向略有上升,其变化趋势呈显著正相关(r=0.7722,p<0.025).沿水流方向,硝化作用与反硝化作用强度变化呈显著负相关(r=-0.9776,p<0.001),这与人工湿地的溶氧状况和污水中氨氮含量较高相一致.

关 键 词:复合垂直流人工湿地  硝化作用  反硝化作用  硝化菌  反硝化菌
文章编号:0250-3301(2005)01-0047-04
收稿时间:2004/1/13 0:00:00
修稿时间:2004/3/28 0:00:00

Nitrification and Denitrification in the Integrated Vertical Flow Constructed Wetlands
HE Feng,WU Zhen-bin,TAO Jing,CHENG Shui-ping and FU Gui-ping.Nitrification and Denitrification in the Integrated Vertical Flow Constructed Wetlands[J].Chinese Journal of Environmental Science,2005,26(1):47-50.
Authors:HE Feng  WU Zhen-bin  TAO Jing  CHENG Shui-ping and FU Gui-ping
Institution:State Key Lab of Fresh Water Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.
Abstract:Nitrification and denitrification in the different layers of the integrated vertical flow constructed wetlands (IVCW) are studied. The results show the constants rate of nitrification and denitrification in the strata of IVCW were 0.01 - 6.35microg x (gxd)-1 and 3.37 - 4.19microg x (gxd)-1 respectively. The most probable number (MPN) method are employed to determine the number and distribution of nitrifying and denitrifying bacteria in the strata of the system. The results show that the numbers of nitrifying and denitrifying bacteria were 7.5 x 10(3) - 1.1 x 10(5) MPN x g(-1) and 7.5 x 10(6) - 1.1 x 10 MPN x g(-1) respectively. The positive correlation between bacteria and their action was obvious (r = 0.9661, p < 0.001, r = 0.7722, p < 0.025). It is also observed that the number of nitrifying bacteria and nitrification rate was decreased along the direction of the water in the IVCW, while denitrifying bacteria and denitrification rate was increased. And there was the significant negative correlation between nitrification and denitrification rate(r = -0.9776, p < 0.001).
Keywords:integrated vertical flow constructed wetland  nitrification  denitrification  nitrifying bacteria  denitrifying bacteria
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