投加有机物提高ANAMMOX反应器脱氮效果的研究

Improvement of Nitrogen Removal Efficiency in ANAMMOX Reactor by Adding Organic Matter

往一套UASB生物膜厌氧氨氧化反应器中加入葡萄糖促使反应器内反硝化菌增殖,然后迫使增殖的反硝化菌进行厌氧氨氧化反应以提高反应器的脱氮效果。结果显示:在反应器进水中加入葡萄糖后,系统对亚硝酸盐氮的去除率迅速提高到90%,但对氨氮的去除率变化不大,显示出反应器内同时发生了反硝化反应和厌氧氨氧化反应;当进水中停止投加葡萄糖后,仅运行10d,系统对氨氮、亚硝酸盐氮和总氮的去除率就分别达到了90%、98%和91%,一个月后对总氮的去除率达到99%。可见,在特定环境下可迫使反硝化菌进行厌氧氨氧化反应。

Some glucose was added to a set of UASB-biofilm ANAMMOX reactor to proliferate denitrifying bacteria, and the proliferated denitrifying bacteria were used to carry out ANAMMOX to improve the nitrogen removal efficiency. The results show that the removal rate of NO2^- - N is increased to 90% quickly after addition of glucose, but the removal rate of NH4^＋ - N has no obvious change, which indi- cates that denitrification and ANAMMOX exist simultaneously in the reactor. When the glucose addition is stopped, the removal rates of NH4^＋ - N, NO2^- - N and TN are 90% , 98% and 91% respectively after ten day operation, and the removal rate of TN is about 99% after a month. It is concluded that the denitrifying bacteria can be forced to carry out ANAMMOX under a given environment.