厌氧/缺氧/好氧体积比对分段进水A^2/O除磷的影响  

Effects of Volume Ratios of Anaerobic /Anoxic /Oxic Zones on Phosphorus Removal in Step-feed A^2/O Process

作　　者：王伟[1] 彭永臻[2] 刘丽娜[1] 张鑫[1] 邵纯红[1] 赫海灵[1] 

机构地区：[1]黑龙江工程学院土木与建筑工程学院,黑龙江哈尔滨150050 [2]北京工业大学北京市水质科学与水环境恢复工程重点实验室,北京100124

出　　处：《中国给水排水》2014年第13期10-14,共5页China Water & Wastewater

基　　金：国家自然科学基金青年基金资助项目(51208185);黑龙江省青年科学基金资助项目(QC2011C018);黑龙江省普通高等学校青年学术骨干支持计划项目(1251G053)

摘　　要：采用三段式分段进水A2/O工艺处理低C/N值生活污水,重点研究了第1段的厌氧/缺氧/好氧体积比对系统除磷及反硝化除磷的影响。试验采用3种运行工况,其厌氧/缺氧/好氧体积比分别为(1∶3∶4)、(2∶2∶4)和(3∶2∶3)。结果表明,在好氧区体积能够保证硝化顺利完成的情况下,适当地提高厌氧/缺氧区体积,可改善脱氮除磷性能。随厌氧区体积的增大,系统对TP的去除率由工况1的38.75%提高到工况3的80.39%,对TN的去除率由76.29%提高到82.33%,且工况3发生了一定程度的反硝化除磷现象。基于试验所采用的3种运行工况,第1段较为优化的厌氧/缺氧/好氧体积比为3∶2∶3。The three-stage step-feed A2/O process was used to treat domestic sewage with low C/N ratio. Effects of the volume ratios of anaerobic/anoxic/oxic zones in the first stage on phosphorus removal and denitrifying phosphorus removal were mainly investigated. Three different volume ratios of anaerobic/ anoxic/oxic zones were adopted, which were 1 ： 3 ： 4, 2 ： 2 ： 4 and 3 ： 2 ： 3 respectively. The results showed that when the complete nitrification was achieved in the aerobic zone, the nitrogen and phosphor- us removal efficiencies could be improved by increasing the volumes of anaerobic/anoxic zones. With the increasing of anaerobic zone volume, the TP removal efficiency increased from 38.75% in mode 1 to 80.39% in mode 3 and TN removal efficiency increased from 76.29% to 82.33% , respectively. In mode 3, some denitrifying phosphorus removal phenomenon was observed. Based on the three different modes, the optimum volume ratio of anaerobic, anoxic and oxic zones in the first stage was 3 ： 2 ： 3.

关 键 词：A2/O工艺 分段进水 低碳源污水 脱氮 除磷 反硝化除磷 

分 类 号：X703[环境科学与工程—环境工程]