城市污水管网外水入流入渗及有机物损失量化分析  

Quantitative analysis of external water infiltration/inflow and organic matter loss in urban wastewater pipe network

作　　者：周宇[1] 唐川东[1] 季久翠 蒋潇 雷凯 胡崇亮 ZHOU Yu;TANG Chuandong;JI Jiucui;JIANG Xiao;LEI Kai;HU Chongliang(China Academy of Urban Planning&Design,Western,Branch,Chongqing 401121,China;Chongqing Sino French Environmental Excellence R&D Centre Co.,Ltd.,Chongqing 400021,China)

机构地区：[1]中国城市规划设计研究院西部分院,重庆401121 [2]重庆中法环保研发中心有限公司,重庆400021

出　　处：《给水排水》2022年第7期124-130,共7页Water & Wastewater Engineering

基　　金：北川新县城城市河道水质保持研究与示范(CZ-2021015)。

摘　　要：外水入流入渗、管道内污染物沉积和降解是导致污水处理厂进水BOD_(5)浓度过低的重要原因.提出了一种基于长时间数据挖掘和整合的识别外水入流入渗量的方法,并基于总量平衡提出了污水输送过程中污染物损失量的计算公式.通过计算实际生活污水量、地下水入渗量、雨水入流量和BOD_(5)损失率,量化分析城市污水收集系统的运行效率.将该方法运用于西南某丘陵城市的污水收集系统相关指标计算,结果与实际观测现象一致.指出该市有效提升污水集中收集率的首选措施应为降低管道运行水位和提高管道流速.The infiltration/inflow of external water.the deposition and degradation of pollu-tants in the pipeline are important reasons for the low influent BOD_(5) concentration of wastewater treatment plant.A method is proposed which to identify the amount of external water infiltration/inflow based on long time data mining and integration,and the calculation formula of pollutant loss in the process of wastewater transportation is proposed based on the total pollutant balance.The collection efficiency of urban wastewater collection system is quantitatively analyzed by calculating the actual domestic wastewater volume,groundwater infiltration,rainwater inflow and BOD_(5) loss rate.The method is applied to the calculation of relevant indexes of wastewater collection system in a hilly city in Southwest China,and the results are consistent with the actual observation phenomenon.It is pointed out that the first choice to effectively improve the centralized wastewater collec-tion rate in this city should be to reduce the pipeline operation water level and increase the pipeline flow rate.

关 键 词：污水处理 提质增效 入流入渗 有机物损失 

分 类 号：TU992[建筑科学—市政工程] X799[环境科学与工程—环境工程]