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

碳纤维填充微气泡曝气厌氧缺氧好氧生物滤池脱氮除磷

基本信息

批准号：
17560485
负责人：
KEMOTO Ryoko
金额：
$ 2.3万
依托单位：
Kanazawa University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2005
资助国家：
日本
起止时间：
2005 至 2006
项目状态：
已结题

项目摘要

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.

总结了硫酸盐还原菌和硫氧化菌处理废水的优缺点，并以人工废水为研究对象，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，采用碳纤维填充微泡曝气厌氧好氧生物滤池处理染料厂废水。由此可见，硫酸盐还原菌在有机物去除中起着重要作用。最后，构建了充填微泡和曝气微泡的厌氧缺氧生物滤池，并以城市污水为例考察了反应器的性能。在水力停留时间超过10h的条件下，反应器仍保持着良好的运行性能。在第一级厌氧反应器中，大部分硫酸盐被去除。约50%的进水TOC分解为无机碳。在第二级缺氧反应器中，第三级反应器回收的硝酸盐大部分通过硫磺反硝化去除。在第三好氧反应器中，硝化作用主要发生在较高的DO浓度下。当硝化作用不足时，硫酸盐在第二反应器中发生还原。结果表明，硫磺在第三反应器内发生氧化反应。因此，硝化作用也受到了抑制。控制硝化作用是很重要的。