南京市某排水管网检测工程实例分析  

Analysis of a drainage pipe network inspection project in Nanjing

作　　者：沈小华[1] 齐国辅 严小明 王耀增[1] 周波[1] 陆佳慧 谢桂山 Shen Xiaohua;Qi Guofu;Yan Xiaoming;Wang Yaozeng;Zhou Bo;Lu Jiahui;Xie Guishan(East China Branch,China Machinery International Engineering Design and Research Institute Co.,Ltd.,Nanjing 210023,China;Nanjing Water Group Co.,Ltd.,Nanjing 210000,China)

机构地区：[1]中机国际工程设计研究院有限责任公司华东分院,南京210023 [2]南京水务集团有限公司,南京210000

出　　处：《给水排水》2020年第4期134-138,共5页Water & Wastewater Engineering

摘　　要：针对南京市某污水收集系统"低浓度高水位"现象,对其中排水管网进行检测排查,共发现混接点578处,检查井问题1124处,管道结构性缺陷5159处,管道功能性缺陷1132处,问题过河管28道。对外水侵入的问题进行即查即改后,污水处理厂进水COD同比上升13.73%,连续3个月平均进水COD在200mg/L以上,进水泵房水位降低60cm。In view of the low concentration and high water level phenomenon of a sewage collection system in Nanjing,the drainage pipe network was inspected.A total of 578 joints,1124 problem inspection wells,5159 pipeline structural defects,1132 pipeline functional defects,and 28 problem river crossings were found.During the project,the problem of external water intrusion will be investigated and corrected immediately.After the completion of the project,the influent COD of the sewage treatment plant increased by 13.73%year-on-year,the average influent COD for three consecutive months was above 200 mg/L,and the water level of the intake pump room of the sewage treatment plant was reduced by 60 cm.

关 键 词：污水收集系统 提质增效 管网 检测 排查 非开挖修复 

分 类 号：TU992[建筑科学—市政工程]