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废水处理系统的优缺点，并利用人工废水考察了厌氧缺氧过程中反硝化反应器中硫的积累情况。其次，采用碳纤维填料、微泡曝气的厌氧生物滤池处理印染废水。结果表明，硫酸盐还原菌在有机去除中起着重要作用。最后，以城市污水为研究对象，构建了微泡填料和微泡曝气的厌氧厌氧生物过滤反应器，并对反应器性能进行了试验研究。在HRT超过10h的条件下，反应器性能保持良好。在第一个厌氧反应器中，大部分硫酸盐被去除。约50%的进水TOC被分解为无机碳。在第二厌氧反应器中，从第三反应器回收的大部分硝酸盐通过硫反硝化去除。在第三氧反应器中，硝化作用主要发生在高浓度DO中。当硝化作用不充分时，在第二反应器中发生硫酸盐还原。结果，第三反应器发生了硫氧化。因此，硝化作用也受到抑制。控制硝化作用很重要。

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.