中国东部和中国密歇根州的特许城镇建立了最先进的2.7 MGD膜微滤水处理厂，第一个使用Zenon系统 在中西部地区，解决长期存在的水源问题并满足 现行条例和拟议条例。该工厂自2001年7月开始投产。本文讨论了浸没式膜的性能 使用五大湖水的微滤性能，这是一种非常难处理的水 由于其极冷的温度（0.5ºC）而进行处理。这篇论文涵盖了五年的研究 性能，并将有助于考虑膜微滤的公用事业公司 他们的资本改善、工厂运营商和饮用水设计工程师。 WTP是一个利用ZeeWeed®500膜的三列系统。每列火车 由15个带8个中空纤维膜组件的盒组成。原水是 通过原水泵泵入膜槽。膜过滤后 经过处理的水在被提升到两个高架水箱之前被泵送至地下蓄水池。A. 安装1毫米移动式滤网，以保护膜。然而，由于 在这些移动筛的作用机理中，一些粗大物料的残余物进入 下游的这些材料对膜纤维造成永久性损伤， 要求更换薄膜。为了获得额外的保护，请使用500um盒式磁带 过滤器（篮式过滤器）安装在钢丝网的下游和钢丝网的上游 膜系统。因此，在2004年3月安装了新的膜替换装置。五年内膜系统的性能如所示 重点介绍渗透质量、颗粒计数、膜渗透性、通量、跨膜压力（TMP）、膜完整性测试（MIT）和恢复清洁 对三列火车中的每一列进行分析。还介绍了运行维护成本。包括表格、数字。

The Charter Townships of East China and China, Michigan, built a state-of-the-art 2.7 MGD membrane microfiltration water treatment plant, the first to use the Zenon system in the Midwest, to address long-standing problems with their source water and to meet current and proposed regulations. The plant has been on line since July of 2001. This paper discusses the performance of immersed membrane microfiltration performance using Great Lakes water, which is a very difficult water to treat because of its extreme cold temperature (0.5 ºC). The paper covers five years of performance and will be useful for utilities considering membrane microfiltration for their capital improvement, plant operators, and for drinking water design engineers. The WTP is a three train system that utilizes ZeeWeed® 500 membranes. Each train consists of fifteen cassettes with eight hollow fiber membrane modules. Raw water is pumped into the membrane tanks via raw water pumps. After membrane filtration the treated water is pumped to ground storage before being lifted to two elevated tanks. A 1mm traveler screen is installed to protect the membranes. However, due to the mechanism of these traveler screens, some carry over of coarse materials got into the downstream. These materials created a permanent damage to the membrane fibers, requiring that the membranes be replaced. For additional protection a 500um cartridge filter (basket filter) were installed downstream of the traveler screen and upstream of the membrane systems. Thus, new membrane replacement were installed in March 2004. The membrane system performance over a period of five years is presented in details with focus on permeate quality, particle counts, permeability of the membranes, flux, transmembrane pressure (TMP), membrane integrity test (MIT), and recovery clean analysis for each of the three trains. O&M cost is also presented. Includes tables, figures.