改良A^(2)O氧化沟在小城镇污水处理厂中的应用研究  

Application of Improved A^(2)O Oxidation Ditch in Small Town Sewage Treatment Plant

作　　者：张青青 胡亮 廖妍 胡新立 ZHANG Qingqing;HU Liang;LIAO Yan;HU Xinli(Central and Southern China Municipal Engineering Design and Research Institute Co.,Ltd,Wuhan 430010,China)

机构地区：[1]中国市政工程中南设计研究总院有限公司,湖北武汉430010

出　　处：《水处理技术》2024年第6期140-143,共4页Technology of Water Treatment

摘　　要：以广东湛江某污水处理厂为例,针对小城镇污水特点,开展了改良A^(2)O氧化沟基于截流式合流制排水体制的小城镇污水处理的工程应用研究。论证了污水厂生化处理方案,介绍了工艺流程、设备参数、工程投资及主要经济技术指标以及运行状况。运行数据显示,该工艺脱氮除磷效果优,抗冲击负荷强,出水水质能稳定达到《城镇污水处理厂污染物排放标准》(GB 18918-2002)一级A标准和《广东省水污染物排放限值》(DB 44/26-2001)第二时段一级标准中较严者,尤其NH_(3)-N出水质量浓度0.02mg/L远低于排放标准限值。该工艺占地面积小,设备操作简单,对经济欠发达的中小城镇较友好。该工程的成功运用,对我国小城镇污水处理具有一定的借鉴和参考价值。Taking a sewage treatment plant in Zhanjiang,Guangdong Province as an example,aiming at the characteristics of small town sewage,the project application of improving A^(2)O oxidation ditch based on closure and combined drainage system for small town sewage treatment was carried out.The biochemical treatment scheme of the sewage plant was demonstrated.The technological process,equipment parameters,project investment,main economic and technical indexes and operation conditions were introduced.The operation data showed that the process has excellent nitrogen and phosphorus removal effect,strong impact load resistance and stable effluent quality,which can meet the level A standard of Pollutant Discharge Standard for Urban Sewage Treatment Plant(GB 18918-2002)and the level Ⅰ standard of Water Pollutant Discharge Limit of Guangdong Province(DB 44/26-2001)in the second period.In particular,the NH_(3)-N effluent concentration of 0.02 mg/L is far lower than the limit of emission standard.The process covers a small area,the equipment is simple to operate,the economy is less developed small and medium-sized towns are more friendly.The successful utilization of the project has a certain reference value for small-town sewage treatment.

关 键 词：改良A^(2)O氧化沟 脱氮除磷 小城镇 抗冲击负荷 

分 类 号：X799.3[环境科学与工程—环境工程]