两级A/O工艺中除磷影响因素的试验研究  

Experimental Study on Two-stage A/O Process for Domestic Sewage Treatment

作　　者：张杰[1] 刘年丰[2] 姚瑞珍[1] 周国胜[2] 

机构地区：[1]黄石理工学院,湖北黄石435003 [2]华中科技大学环境科学与工程学院,湖北武汉430074

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)。

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%.

关 键 词：两级A/O工艺 A^2/O工艺 生物脱氮除磷 污泥龄 

分 类 号：X703[环境科学与工程—环境工程]