Murfreesboro市水和下水道部门（MWSD）目前 运营一个15.6 MGD石灰软化/混合介质过滤装置，以提供 向大约25000名客户提供饮用水。虽然工厂 在过去的40年里运作良好，监管越来越严格，再加上 关注老龄化过滤下水道激励城市人员考虑 提供优质饮用水的替代过滤技术 对其客户来说是可能的。这项决定是在2004年作出的，目的是修复该地区 现有的处理工艺，并将膜过滤纳入更新的 工艺方案。 城市工作人员和工程顾问想要确定哪种类型的 膜过滤系统最适合城市的需要，且配置合理 应该放置哪些膜。争论的焦点是是否使用真空吸尘器 驱动浸入式膜技术或压力驱动容器式膜技术 设计同样存在争议的是，膜是否应该在安装之前或之后安装 颗粒活性炭（GAC）过滤后。 最后，莫弗里斯伯勒酒店 水和污水处理部（MWSD）选择了一个加压的集装箱运输系统 膜过滤系统。为了给客户提供最大的灵活性 经过翻修后的工厂，设计了一个管道系统，使膜 在GAC过滤之前或之后进行操作。这应该允许治疗 电厂工作人员确定每种操作模式的优缺点 模式，并利用真实世界做出自己的决定 数据 本文讨论了在评估过程中考虑的几个因素 两种膜技术。四个月的试验结果 文中还对所选系统进行了讨论。包括表格、数字。

The City of Murfreesboro Water and Sewer Department (MWSD) currently operates a 15.6 MGD Lime Softening/Mixed Media Filtration plant to provide drinking water to its approximately 25,000 customers. Although the plant has operated well over the last 40 years, increasingly tight regulations coupled with concerns over aging filtration underdrains motivated City personnel to consider alternative filtration technologies to provide the best quality drinking water possible to its customers. The decision was made in 2004 to rehabilitate the existing treatment processes, and to include membrane filtration in the updated process scheme. City personnel and engineering consultants wanted to determine which type of membrane filtration system best fit the City's needs, and the configuration in which the membranes should be placed. At issue was whether to use a vacuum driven, immersed membrane technology or a pressure driven, containerized design. Also at issue was whether the membranes should be installed before or after Granular Activated Carbon (GAC) filtration. In the end, the Murfreesboro Water and Sewer Department (MWSD) selected a pressurized, containerized membrane filtration system. In order to provide maximum flexibility for the renovated plant, a piping system was designed that would allow the membranes to operate either before or after GAC filtration. This should allow the treatment plant staff to determine the advantages and disadvantages of each operational mode on the full-scale plant, and make their own determination using real-world data. This paper discusses several of the factors considered during the evaluation of both membrane technologies. The results of four months of pilot testing on the selected system are also discussed. Includes tables, figures.