摘要
针对传统A2/O工艺存在的泥龄矛盾,将脱氮和除磷分置于前后两套不同的A/O系统中,第一级A/O采用活性污泥法除磷;第二级A/O采用生物膜法脱氮。通过以生活污水为处理对象进行试验研究,结果表明,在泥龄为3d、水温22℃￣28℃条件下,第一级A/O出水TP平均值为0.9mg/L,去除率为71.9%;COD平均值为44mg/L,去除率为81.2%。
The two-stage A/O process is presented from the aspect of solving the SRT contradict to improve the traditional A^2/O process.Phosphorus is removed in the first A/O process, which the activated sludge method is used. Nitrogen is removed in the second A/O process, which bio-film method is used. The result indicates that the SRT is 3 days and the water temperature is 22～28℃. The concentration of TP is 0.9 mg/L, and the removal rate is 71.9%. COD is 44mg/L, and the removal rate is 81.2%.
出处
《科技创业月刊》
2006年第11期186-187,共2页
Journal of Entrepreneurship in Science & Technology
基金
国家"863"计划"武汉水志项旅游区面源污染控制技术研究及动物园工程示范项目"研究成果之一(项目编号:2002AA601022-4-2)。
关键词
两级A/O工艺
A^2/O工艺
生物脱氮除磷
污泥龄
two-stage A/O process, A^2/O process, biological nitrogen and phosphorus removal, sludge retention time （SRT）
