生物转盘在某城镇污水处理厂改造扩容工程中的应用  

Application of Rotating Biological Contactors in Reconstruction and Expansion Project of a Municipal Wastewater Treatment Plant

作　　者：吕汶霖 孙德寿 王伟伟 左浩 柴伟贺 张磊[2] LV Wen-lin;SUN De-shou;WANG Wei-wei;ZUO Hao;CHAI Wei-he;ZHANG Lei(Qinghai Jieshen Enwironmental Energy Industry Co.Ld.,Xining 810000,China;Shenyang Academy of Environmental Sciences,Shenyang 110167,China)

机构地区：[1]青海洁神环境能源产业有限公司,青海西宁810000 [2]沈阳环境科学研究院,辽宁沈阳110167

出　　处：《中国给水排水》2021年第4期82-86,共5页China Water & Wastewater

基　　金：国家水体污染控制与治理科技重大专项(2018ZX07601-001);辽宁省博士科研启动基金项目(20180540134);环境微生物四川省重点实验室开放研究基金项目(KLCAS-2020-2)。

摘　　要：平凉市某污水处理厂原设计规模5.0×10^(4)m^(3)/d,采用传统A^(2)/O+深度处理工艺,本次扩建后规模达到8.5×10^(4)m^(3)/d。针对厂区用地紧张、进水总氮浓度高等问题,缺氧区采用生物转盘强化系统的脱氮性能,好氧区改造为限氧曝气区,并新建初沉池以确保出水指标达标。实际运行数据显示,在低温、低碳氮比条件下,出水水质可稳定达到《城镇污水处理厂污染物排放标准》(GB 18918—2002)的一级A标准。该工程总投资为10793.17万元,直接运行成本为0.72元/m^(3)。The original design capacity of a wastewater treatment plant in Pingliang City is 5.0×^(4)m^(3)/d,using the traditional A^(2)O+advanced treatment process,the capacity of this expansion reaches8.5×10^(4)m^(3)/d.In view of the shortage of land and high concentration of influent total nitrogen,the anoxic zone adopts rotating biological contactors to enhance the denitrification performance,the aerobic zone is transformed into limited aeration zone,and a new primary sedimentation tank is built to ensure the design effluent target.Actual operation results showed that effluent quality stably met the first level A criteria specified in the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant(GB18918-2002)under low temperature and low C/N ratio.The total investment of the project was107.9317 million yuan,and the direct operation cost was 0.72 yuan/m^(3).

关 键 词：污水处理厂 扩容改造 生物转盘 

分 类 号：TU992[建筑科学—市政工程]