再生水的工业应用已使整个管道输送系统对水质进行有效管理的需求走到了最前沿。水质计算机模型正在成为一种强大、可靠、经济高效的手段，用于分析水质变化的动态，并确保在整个配水系统中始终保持足够的消毒剂水平。这些模型是基于物质质量平衡，考虑了运输和动力学反应过程。他们认为一阶反应动力学发生在整体流动和管壁。然而，这些模型的使用仅限于饮用水分配系统。 它们在再生水中的应用之前尚未进行过调查。在本文中，作为系统水质规划和改进研究的一部分，开发并校准了中央流域城市水区再生水系统的详细动态水质模型。通过分析24小时采样期间在多个分布地点进行的氯测量，进行校准。在系统水力定义良好的位置，模型预测和观测到的氯含量之间取得了良好的一致性。校准后的模型将用于评估各种替代管理和运营策略，以提高配水系统水质的有效性。 本文描述了中央盆地市政水区和蒙哥马利·沃森实施的项目的所有阶段。它旨在为考虑开展水质模拟研究的组织提供有用的信息和有价值的指导，以管理其再生水分配系统中的氯消毒实践。

The industrial use of reclaimed water has brought to the forefront the need for the effective management of water quality throughout pipe conveyance systems. Water quality computer models are emerging as a powerful, reliable, and cost-effective means of analyzing the dynamics of water quality variations and ensuring that sufficient disinfectant levels are maintained throughout the distribution system at all times. These models are predicated on material mass balance accounting for transport and kinetic reaction processes. They consider first-order reaction kinetics to occur both in the bulk flow and at the pipe wall. However, the use of these models has been limited to drinking water distribution systems. Their application to reclaimed water has not been previously investigated. In this paper a detailed dynamic water quality model of the Central Basin Municipal Water District's reclaimed water system is developed and calibrated as part of a water quality planning and improvement study of the system. Calibration was performed by analyzing chlorine measurements taken at several distributed sites over a 24 hour sampling period. Good agreement between model predictions and observed chlorine levels was obtained at locations where the system hydraulics were well defined. The calibrated model will be used to evaluate various alternative management and operational strategies for improving distribution system water quality effectiveness. The paper describes all phases of the project performed by Central Basin Municipal Water District and Montgomery Watson. It is intended to provide useful information and valuable guidance to organizations considering initiating water quality simulation studies for managing chlorine disinfection practices in their reclaimed water distribution systems.