AAOA-MBR工艺在污水厂提标扩建中的应用  

Application of AAOA-MBR Process in Sewage Treatment Plant Upgrading and Expansion

作　　者：李易寰 董玉明 高芳 LI Yi-huan;DONG Yu-ming;GAO Fang(Wuxi Shangshihuitou Environmental Protection Co.Ltd.,Wuxi 214174,China;School of Chemical and Material Engineering,Jiangnan University,Wuxi 214122,China;Wuxi Huishan Huiqingyuan Environmental Testing Co.Ltd.,Wuxi 214174,China)

机构地区：[1]无锡上实惠投环保有限公司,江苏无锡214174 [2]江南大学化学与材料工程学院,江苏无锡214122 [3]无锡惠山惠清源环境检测有限公司,江苏无锡214174

出　　处：《中国给水排水》2022年第18期114-119,共6页China Water & Wastewater

摘　　要：无锡某城镇污水处理厂五期提标扩建工程采用AAOA-MBR工艺,介绍了工艺流程、主要构筑物及设备参数。总结和分析了污泥接种方法、调试运行经验及调试期间出水数据。提出了适宜的膜清洗方案,分析了膜清洗效果。对稳定运行期5个月的进出水COD、TP、氨氮及TN数据进行分析,评价了污水处理效果。结果表明,AAOA-MBR工艺具有良好的脱氮除磷效果,出水COD、TP、氨氮及TN均值分别为15.6、0.128、0.472、8.69 mg/L,去除率分别为92.9%、97.3%、97.8%、73.1%,出水指标优于设计标准。稳定运行期间,生化池硝化液回流比控制在160%~200%,膜池污泥回流比控制在300%~500%,生化池末端溶解氧控制在2~4 mg/L,除磷药剂投加量为2.0~2.5 t/d,可获得较好的污水处理效果。The AAOA-MBR process is used in the fifth phase upgrading and expansion project of a municipal sewage treatment plant in Wuxi.The process flow,main structures and equipment parameters are introduced.The sludge inoculation method,operation experience and effluent data during commissioning are summarized.An appropriate membrane cleaning scheme is proposed,and its effect is analyzed.The influent and effluent COD,TP,ammonia nitrogen and TN test data during 5 months of stable operation are analyzed to evaluate the sewage treatment effect.The results show that the AAOAMBR process has a good nitrogen and phosphorus removal effect.The average effluent COD,TP,ammonia nitrogen and TN are 15.6 mg/L,0.128 mg/L,0.472 mg/L,8.69 mg/L,respectively,and the corresponding removal rates are 92.9%,97.3%,97.8%,and 73.1%,respectively,which are better than the design standard.The nitrification liquid reflux ratio of the biochemical pond is controlled at 160%-200%,the sludge reflux ratio of the membrane tank is controlled at 300%-500%,and the DO at the end of the biochemical tank is controlled at 2-4 mg/L.The dosage of phosphorus removal agent is 2.0-2.5 t/d,which can obtain good sewage treatment effect.

关 键 词：AAOA-MBR工艺 污泥接种 调试运行 脱氮除磷 

分 类 号：TU992[建筑科学—市政工程]