本幻灯片演示概述了解决大辛辛那提水厂（GCWW）在进行配水系统扩建时使用的配水系统水质问题的操作和建模方法。水质问题包括:基础设施的规模满足未来需求； 初始需求最小；和 安装采样站进行监测 水质。解决方法包括操作和重新设计。操作方法包括更换油箱操作和 实施每周冲洗计划。重新设计的方法包括分区阀安装、主延伸和接头。在水龄上提供了建模结果。结论包括:重组活动可以提供长期的 香港水质问题的解决方法 通过最小化保留时间来分配系统； 水质采样操作， 水力模拟和水质模拟 是解决保留时间问题的有用工具； 和 重新设计活动可以产生积极的影响 一个地区的影响和另一个地区的负面影响 另一个考虑再工程的影响 整个分销系统的活动。包括表格，数字。

This slide presentation outlines operation and modeling approaches for addressing water quality problems in the distribution system used by the Greater Cincinnati Water Works (GCWW) when it underwent a distribution system expansion. Water quality concerns included: infrastructure sized for future demand; initial demand minimal; and, sampling stations installed to monitor water quality. Solution approaches included both operational and re-engineering. Operational approaches included change tank operation and implement weekly flushing program. The re-engineering approach included division valve installation, and main extension and tie-in. Modeling results are provided on water age. Conclusions included: re-engineering activities can provide long-term solutions to water quality problems in the distribution system by minimizing retention time; water quality sampling, operation approaches, hydraulic modeling and water quality modeling are useful tools in addressing retention time issues; and, re-engineering activities can have positive impacts in one area and negative impacts in another. Consider the impact of re-engineering activities on the entire distribution system. Includes table, figures.