Nitrogen and phosphorus removal using the anaerobic anoxic oxic biological filter reactor packed with carbon fiber and aerated with microrbubble

总结了硫酸盐还原菌和硫氧化菌处理污水的优缺点，并以人工模拟污水为例，考察了厌氧缺氧好氧工艺反硝化反应器中硫的积累情况。其次，采用碳纤维填料微气泡曝气厌氧好氧生物滤池处理染料废水。硫酸盐还原菌对有机物的去除起着重要的作用。最后，构建了微气泡填料和微气泡曝气的厌氧缺氧好氧生物滤池反应器，并以城市污水为对象考察了反应器的运行性能。在水力停留时间超过10小时的条件下，反应器仍保持良好的性能。第一级厌氧反应器去除了大部分硫酸盐。约50%的进水TOC分解为无机碳。在第二个缺氧反应器中，大部分的硝酸盐从第三个反应器中回收被硫反硝化去除。在第三好氧反应器中，硝化主要发生在高DO浓度。当硝化不充分时，第二反应器中发生硫酸盐还原。结果，在第三反应器中发生硫氧化。因此，硝化作用也受到抑制。控制硝化作用十分重要。

Advantage and disadvantage of wastewater treatment system using sulfate reducing bacteria and sulfur oxidation bacteria were summarized, and sulfur accumulation in the denitrification reactor in the anaerobic anoxic oxic process was examined using the artificial wastewater. Next, treatment of dye works wastewater using anaerobic oxic biological filter reactor packed with carbon fiber and aerated with micro-bubble. It was concluded that sulfate reducing bacteria played an important role on organic removal. Final, the anaerobic anoxic oxic biological filter reactor packed with micro-bubble and aerated with micro-bubble was constructed and reactor performance was examined using municipal wastewater. Good reactor performance was maintained in the condition of HRT over 10hrs. Most of sulfate was removed in the first anaerobic reactor. About 50% of influent TOC was decomposed to inorganic carbon. In the second anoxic reactor, most of nitrate recycled from the third reactor was removed by sulfur denitrification. In the third oxic reactor, nitrification occurred predominantly in the high DO concentration. When the nitrification was un-sufficient, sulfate reduction occurred in the second reactor. As the result, sulfur oxidation occurred in the third reactor. Therefore, nitrification was also suppressed. It is important to control nitrification.