排水処理施設からの亜酸化窒素生成抑制を担う細菌群の生理生態の解明とその応用

本论文的研究课题为“生物脱氮系统中细菌群落及运行条件对N2 O排放的影响”，其基本思路是加速N2 O的减排。本研究的主要成果有：（1）发现nosZ mRNA是一个很好的N_2O还原活性的指示基因;（3）结合反应器的长期运行和功能分析，提出了低N_2O排放的最佳运行条件。我参观了昆士兰州大学（UQ）的先进水管理中心（AWMC），这是一个世界级的废水处理技术研究中心。我学到的有：（1）。利用游离硝酸（FNA）技术实现生物脱氮过程中的同步硝化反硝化（SND）。（二）、通过创新方法（过硫酸盐和零价铁联合调理;零价铁和过氧化氢联合调理）提高厌氧消化污泥的脱水性能。

This year, I got Ph.D degree under the title as “Significance of bacteria community and operation conditions on nitrous oxide emission from a biological nitrogen removal system”.The basically idea of this study is to accelerate nitrous oxide (N2O) reduction. In this study, my achievements are: (1) I showed nosZ mRNA as a good indicator for N2O-reducing activity; (2) I identified N2O-reducing bacteria in our reactors’ system; (3) Combined the long-term reactor’s operation and functional analysis, I suggested optimal operation conditions for low N2O emission.After I got Ph.D degree from Tokyo University of Agriculture and Technology, I visited to the Advanced Water Management Centre (AWMC), University of Queensland (UQ), which is a world-class research center about wastewater treatment technology. What I have learned there are: (1). Using free nitric acid (FNA)-based technology to achieve simultaneous nitrification and denitrification (SND) during biological nitrogen removal process. (2). Improving dewaterability of anaerobically digested sludge by innovative methods (combined conditioning with persulfate and zero-valent iron; combined zero valent iron and hydrogen peroxide conditioning).