本研究项目的目的是评估减少水资源的操作策略 在配电网中的停留时间有利于在 尽量减少有问题行业的消毒副产品（DBPs），例如低消耗区域和高污染区域 死胡同的数量，如加拿大魁北克市的案例研究所示。本文重点讨论了确定 在可变水力条件下，配水系统中的水流模式。 案例研究是魁北克市的主要配送系统，由圣查尔斯提供 洛雷特维尔饮用水厂（DWP）的河流。这是一个广泛的供水网络，为全球约40%的人口供水 城市人口（即约23万人）。该分配系统可能存在不必要的 与相邻网络的未知互连。一旦水力模型完成，初步的水龄和氯残留量将被确定 使用EPANET计算。在不同的部门和时期设计了两次抽样活动 当然，使用示踪剂监测不同地点的水龄。这些活动的结果将 用于校准水力模型，评估水力情况，以减少水龄，提高 残余氯浓度，从而改善水质。包括8个参考文献、图表。

The objective of this research project was to evaluate operational strategies for reducing water residence time in distribution networks to favor adequate concentrations of residual chlorine while minimizing disinfection byproducts (DBPs) in problematic sectors, such as low consumption areas and areas with a high number of dead-ends, as illustrated in a case study of Quebec City, Canada. The paper focuses on the approach for determination of water travel patterns in the distribution system, in variable hydraulic conditions. The case study is the main distribution system of Quebec City, supplied by the St. Charles River at Loretteville Drinking Water Plant (DWP). It is a widespread network that provides water to about 40% of the city's population (i.e. about 230,000 people). This distribution system has possible unwanted and unknown interconnections with neighboring networks. Once the hydraulic model was completed, preliminary water age and chlorine residuals were calculated using EPANET. Two sampling campaigns were designed, in different sectors and periods of time, using tracers to monitor water age at different locations. Results from these campaigns will be used to calibrate the hydraulic model to evaluate hydraulic scenarios to reduce water age, enhance residual chlorine concentration and, thus, improve water quality. Includes 8 references, figures.