A^2/O工艺重新启动试验的污泥活性恢复研究  

Studies on sludge bioactivity recovery after restart of an A^2/O wastewater treatment system

作　　者：杜兴治[1] 吴志超[1] 周振[1] 马菲菲[1] 

机构地区：[1]同济大学环境科学与工程学院,污染控制与资源化研究国家重点实验室,上海200092

出　　处：《环境污染与防治》2009年第1期69-73,共5页Environmental Pollution & Control

摘　　要：以处理实际城市污水的小试规模A2/O工艺为研究对象,在处理工艺稳定运行的基础上关停装置60d,进行了"饥饿"期内不同关停模式下系统重新启动后污泥活性恢复的研究。结果表明,循环模式、厌氧模式和微曝模式3种不同关停模式下,系统重启第4天,污泥硝化性能及反硝化性能基本恢复甚至超过关停前水平,而脱碳性能和除磷性能的恢复速度则较缓慢,重新启动后系统呈现较好的反硝化除磷能力;重启第12天后3种关停模式出水水质良好,基本满足《城镇污水处理厂污染物排放标准》(GB18918—2002)一级B标准。不同关停模式下,系统污泥活性恢复速率及出水水质对比显示,污水处理厂故障检修期间将搅拌、曝气等动力设备完全关闭的厌氧模式下系统污泥活性恢复较快,而且能耗最低。Based on a lab-scale A^2/O process acclimated with municipal wastewater,sludge bioactivity recovery after restart under three shutting-off modes was investigated during 60 day starvation after stable operation. The results indicate that nitrifying and denitrifying activities of the three units are reconverted at the 4th day after restart,and the carbon oxidation and phosphorus removal performances are resumed slowly with the latter mostly attributed to the denitrifying phosphorus uptake. The effluent quality of the three units after restart for 12 days was met with the water quality standard of level 1B in GB 18918—2002. In consideration of the sludge activity recovery and the effluent quality of the A^2/O system,the mode with all agitation and aeration equipments shut off during starvation could achieve the best recovery efficiency with the lowest energy consuming.

关 键 词：A2/O 污水处理 重新启动 污泥活性 

分 类 号：X703[环境科学与工程—环境工程] X503.225