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

今年获得博士学位，课题为“细菌群落及操作条件对生物脱氮系统氧化亚氮排放的意义”。这项研究的基本思想是加速氧化亚氮（N2O）的减少。在本研究中，我的成果有：(1)我证明了nosZ mRNA是一个很好的n2o还原活性指标；(2)在我们的反应器系统中发现了n2o还原菌；(3)结合反应器的长期运行和功能分析，提出了低N2O排放的最佳运行条件。在东京农业技术大学获得博士学位后，我参观了昆士兰大学高级水管理中心（Advanced Water Management Centre， AWMC），这是一个世界级的污水处理技术研究中心。我在那里学到的是：(1)。利用游离硝酸（FNA）技术实现生物脱氮过程中同时硝化反硝化（SND）。(2)。采用创新方法（过硫酸盐与零价铁联合调理；零价铁与双氧水联合调理）提高厌氧消化污泥的脱水性。

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).