汤汪污水处理厂扩建、提标及再生水回用工程特点解析  

Analysis on the Characteristics of Expansion,Upgrading and Reclaimed Water Reuse Project of Tangwang WWTP

作　　者：刘义忠 周知 LIU Yizhong;ZHOU Zhi(Jiangsu Changjiang Water Affairs Co.,Ltd.,Yangzhou 225009,China;Yangzhou Jieyuan Drainage Co.,Ltd.,Yangzhou 225009,China)

机构地区：[1]江苏长江水务股份有限公司,江苏扬州225009 [2]扬州市洁源排水有限公司,江苏扬州225009

出　　处：《净水技术》2024年第S02期216-224,共9页Water Purification Technology

摘　　要：汤汪污水处理厂(一、二期)设计规模为18万m^(3)/d,采用循环式活性污泥法(CAST)+紫外消毒池作为主体工艺,出水水质执行《城镇污水处理厂污染物排放标准》(GB 18918—2002)中的一级B标准。为应对出水标准提高和进厂水量增加,现建设汤汪污水处理厂三期工程(扩建、提标及再生水回用工程)。三期扩建区采用改良AAO池+二沉池+高密度沉淀池+V型滤池+消毒接触池,加强脱氮除磷;同步对一、二期工艺进行改造,增设超细格栅和反硝化深床滤池,出水泵提至扩建深度处理;再生水回用工程采用臭氧接触池。三期工程建成后总处理规模达到26万m^(3)/d,出水水质稳定达到《城镇污水处理厂污染物排放标准》(GB 18918—2002)的一级A标准,再生水水质优于《地表水环境质量标准》(GB 3838—2002)中的地表水环境质量Ⅳ类标准。运行结果表明,工程运行高效稳定,出水水质可以稳定达到设计标准的要求。The design scale of Tangwang wastewater treatment plant(WWTP)(phase I and II)is 180000 m^(3)/d,adopting CAST+UV disinfection tank as main process,and the quality of effluent carries out the first grade B criteria of Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant(GB 18918—2002).In order to cope with the increase of effluent standard and the increase of incoming water,Tangwang WWTP phase II project(expansion,upgrading and reclaimed water reuse)is now under construction.Phase II expansion area using improved AAO tank+two sedimentation tank+high-density sedimentation tank+V-shaped filter+disinfection contact tank,to strengthen the nitrogen and phosphorus removal;simultaneous renovation of the first and second phase of the process,the addition of ultra-fine grids and denitrification deep-bed filter,the water pumped to the expansion of the depth of treatment;reclaimed water reuse project using ozone contact tanks.Affer the completion of the phase II project,the total treatment scale reaches 260000 m^(3)/d,the effluent quality is steadily upgraded to meet first grade A criteria of Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant(GB 18918—2002),and the reclaimed water effluent water quality is better than the IV standard of Environmental Quality Standards for Surface Water(GB 3838-2002).Actual operation shows that the project is running well,and the quality of effluent can reach the standard stably.

关 键 词：汤汪污水处理厂 提标 扩建 再生水回用 一级A标准 

分 类 号：TU992[建筑科学—市政工程]