污水处理厂扩建工程中A^2O型氧化沟工艺优化设计  

Optimization Design of A^2O Oxidation Ditch Process for Expansion Project of Wastewater Treatment Plant

作　　者：王全 王立 刘欢 杨长岭 张克峰[3] 宋旭升 孟付明 杨曦凯 张领国 WANG Quan;WANG Li;LIU Huan;YANG Chang-ling;ZHANG Ke-feng;SONG Xu-sheng;MENG Fu-ming;YANG Xi-kai;ZHANG Ling-guo(Jinan Municipal Engineering Design & Research Institute < Group > Co. Ltd., Jinan 25010,China;Development and Construction Department of Jining Economic Development Zone Management Committee,Jining 272000, China;School of Municipal & Environmental Engineering, Shandong Jianzhu University,Jinan 25010,China)

机构地区：[1]济南市市政工程设计研究院<集团>有限责任公司,山东济南250101 [2]济宁经济开发区管理委员会开发建设局,山东济宁272000 [3]山东建筑大学市政与环境工程学院,山东济南250101

出　　处：《中国给水排水》2019年第6期67-71,共5页China Water & Wastewater

摘　　要：亳州市南部新区污水处理厂原一期工程规模为2. 5×10~4m^3/d,采用预处理/A^2O型氧化沟/二沉池/反硝化深床滤池/消毒工艺流程。结合现状及规划,二期需扩建至5×10~4m^3/d。经调研,一期工艺存在进水中工业废水较多、废水可生化性较差、总磷波动大、出水水质不稳定等问题,为此,扩建工程中进行了设计优化:保持原A^2O型氧化沟主体工艺不变,增设水解池及碳源投加点,以提高污水可生化性;设置多点投加絮凝剂,并增设除磷池,强化化学除磷。实际调试运行表明,扩建工程运行效果稳定、良好,出水水质优于一级A排放标准。The original first phase project of the wastewater treatment plant in the southern part of Bozhou City was 2. 5 ×10^4 m^3/d, which adopted combination process of pretreatment/A20 type oxidation ditch/secondary sedimentation tank/denitrification deep bed filter/disinfection tank. Combined with the current situation and plan, the second phase project needs to be expanded to 5 ×10^4 m^3/d. After investigation, the first phase process had problems including high percentage of industrial wastewater in the influent, poor biodegradability of raw water, large fluctuations of total phosphorus, and unstable effluent quality. In view of the above problems in the first phase, the design optimization was carried out in this expansion project: the original A^2O oxidation ditch was still kept as the main process, hydrolysis tank and carbon source dosing point were added to improve the biodegradability of wastewater;the multipoint dosing flocculant was set up, the dephosphorization tank was applied to strengthen chemical phosphorus removal, etc. After the project was commissioned and operated, the effluent quality was better than the first class A standard.

关 键 词：污水处理厂 水解池 除磷池 

分 类 号：TU992.3[建筑科学—市政工程]