进一步改善城市网-厂-水体污水系统升级改造和运行效率的四点看法  

The four issues relating to improve the efficiency of up-grading and operation of urban sewage systems in China

作　　者：曹业始 KROISS H VAN LOOSDRECHT M DAIGGER G T CAO Yeshi;KROISS H;VAN LOOSDRECHT M;DAIGGER G T(CSD New Conceptual Environmental Development Yixing Ltd,Yiring 214213,China;Vienna University of Technology,The Institute of Water Quality and Resource Management,Vienna 1040,Austria;Del ft University of Technology,Biological Technology Department,Delft 2029,The Netherlands;The University of Michigan,Civil and Environment Engineering Department,Michigan 48109,USA)

机构地区：[1]中持新概念环境发展宜兴有限公司,宜兴214213 [2]维也纳工业大学水质和资源管理研究所,奥地利维也纳1040 [3]代尔夫特理工大学生物技术系,荷兰代尔夫特2629HZ [4]密歇根大学土木和环境工程系,美国密歇根州48109

出　　处：《给水排水》2024年第4期137-144,共8页Water & Wastewater Engineering

摘　　要：2022年,《深入打好城市黑臭水体治理攻坚战实施方案》发布,要求努力解决河流雨后黑臭和雨季河流断面水质下降问题,力争到2025年,进水BOD浓度高于100毫克/升的城市生活污水处理厂规模占比达90%以上,城市生活污水集中收集率达到70%以上。水行业正面临着防止雨后河流返黑和改善雨季河流水质等新任务。因此,结合近年来成绩、实践和欧美的经验教训,提出和讨论了与进一步改善网-厂-水体城市污水系统升级改造及运行效率相关的四个问题:分流制管网有没有外(雨)水入侵和溢流、污水处理厂的进水浓度应多高、为什么部分污水处理厂需局部扩容、为什么污水管道中流速低于自净流速,并在此基础上,对相关工作提出了建议。Combining the practices and experiences learned in the recent years in China and the relevant international practices this paper raises and discusses the four topics,which are related to improve the efficiencies of urban sewage systems up-grading and operation in China,including:extraneous water intrusion and overflow of separate sewer system,sewage concentration,the necessity to expand sewage treatment capacity,self-clean flow velocity in sewers.A summary and some suggestions are presented at the end of the paper.

关 键 词：城市污水系统 污水管网 外水入侵 雨水 溢流 污水浓度 污水处理厂扩容 水环境容量 

分 类 号：TU992[建筑科学—市政工程]