倒置A^2／O与改良A^2／O工艺生产性试验比较  

CONTRAST BETWEEN INVERTED A^2/O PROCESS AND IMPROVED A^2/O PROCESS IN FULL-SCALE TEST

作　　者：刘长青[1] 张峰[1] 毕学军[1] 张波 

机构地区：[1]青岛理工大学环境与市政工程学院,山东青岛266033 [2]山东省环保局,山东济南256100

出　　处：《水处理技术》2008年第5期53-56,共4页Technology of Water Treatment

基　　金：山东省中青年科学家科研奖励基金项目(2006BSB08027)

摘　　要：以典型高浓度城市污水为处理对象,在生产性试验规模上,比较了不同回流比条件下倒置A2/O工艺与改良A2/O工艺在脱氮除磷效果上的不同,并研究了通过缩短初沉池水力停留时间缓解脱氮除磷碳源矛盾的可行性。试验结果表明,以较低污泥回流比运行的倒置A2/O工艺可以保持较好脱氮除磷效果,与相同污泥回流比而硝化液回流比为300%平行运行的改良A2/O工艺脱氮效果基本相当,但除磷效果优于改良A2/O工艺;提高倒置A2/O工艺污泥回流比至200%左右时,其脱氮除磷效果均优于改良A2/O工艺;通过缩短初沉池水力停留时间可以有效缓解生物脱氮除磷碳源的矛盾,提高系统整体脱氮除磷效果。This different efficiency on N＆P removal between inverted A^2/O process and improved A^2/O process in same operational parameter was discussed.Contradictions between N＆P removal whether could solve by shorten HRT of primary sedimentation pond or not were also involved. The results showed that the inverted A^2/O process had the same efficiency on nitrogen removal in low sludge reflux ratio as improved A^2/O process, which was operated in 100% sludge reflux ratio and 300% inter reflux ratio.While increased the reflux ratio of inverted A^2/O process to 200%, because more microbe was involved in alternate circumstance ofanaerobic and aerobic condition, the efficiency of N＆P removal surpass improved A^2/O proeess. The results also showed that the contradictions between N＆P removal can be solved by shorten HRT of primary sedimentation pond; it can improve the efficiency on N＆P removal.

关 键 词：倒置A^2/O工艺 改良A^2/O工艺 脱氮除磷 生产性试验 

分 类 号：X703.1[环境科学与工程—环境工程]