合流制排水系统截流运行量质特征浅析  

Discussion on the Characteristics of Quantity and Quality Indices for Intercepting Operation in Combined Drainage System

作　　者：顾一鸣 GU Yiming(Shanghai Chengtou WaterCo.,Ltd.,Shanghai 200002,China)

机构地区：[1]上海城投水务<集团>有限公司,上海200002

出　　处：《净水技术》2023年第5期131-138,共8页Water Purification Technology

摘　　要：文中对上海中心城区某合流制排水系统现状截流量与截流水质变化开展分析和探讨。选取上海某合流污水输送系统与覆盖该区域供水的水厂。通过水厂日供水与合流泵站纯旱天截流量比值分析,拟合了雨天条件下的旱天截流量本底值和变化曲线。分析得出全年雨天截流量(含雨后影响流量)占全年截流总量的16.7%,以及不同降雨条件下雨后对截流量的影响为1~3 d的结论。分析合流污水输送系统末端水质情况,梳理6项水质指标逐月变化和4项水质指标相关性比值。分析认为月度水质总体变化趋势和当月降雨量、截流量及放江的关联度较大,水质指标相关性分析总体正常可控。In this paper,it discussed on the flow and quality indices characteristics of intercepting operation in combined drainage system.A combined drainage system in Shanghai and a WTP covering the water supply in the area were selected.Based on the analysis of the ratio of the daily water supply of the WTP to the intercepting flow of the combined flow pump station in dry days,the background value and the change curve of the intercepting flow in dry days under rainy days were fitted.The analysis showed that the annual intercepting flow in rainy days(including the influence flow after rain)accounted for 16.7%of the total intercepting flow in the whole year,and the influence of different rainfall conditions on the intercepting flow was 1~3 days.Analyze the water quality at the end of the combined sewage transmission system,sort out the monthly change of 6 water quality indices and the correlation ratio of 4 water quality indices.The analysis showed that the overall change trend of monthly water quality was highly correlated with the rainfall,intercepting flow and river discharge in that month,and the correlation analysis of water quality indices was generally normal and controllable.

关 键 词：合流制排水系统 泵站 供水量 拟合曲线 降雨量 截流量 水质指标 

分 类 号：TU992[建筑科学—市政工程]