各种膜技术可以帮助水供应商满足更严格的法规和要求。本文介绍了一个在盐岩水处理厂进行的案例研究，以证明微滤（膜工艺）和常规处理相结合有助于节约能源成本和膜更换成本，并提供了一种多屏障处理方法。包括贾第虫和大肠菌群挑战试验在内的一项试点研究结果表明，尽管供水来源高度多变，但微滤系统的能力满足并超过了当前和待决的监管要求。详细的资本和运营成本比较表明，微滤具有成本效益。 此外，微滤还具有许多其他优点，例如改善水质和防止微生物污染。一般来说，膜过滤系统（如微滤）的资本和运营成本略高于传统处理厂。然而，在某些情况下，如本文中强调的情况，微滤与常规处理相结合是经济有效的，可以改善整体水质。

Various membrane technologies can help water purveyors meet tougher regulations and requirements. This paper presents a case study at the Salt Rock Water Treatment Plant to demonstrate that a combination of microfiltration (a membrane process) and conventional treatment helps save energy costs and membrane replacement costs, and offers a multi-barrier approach to treatment. Results of a pilot study, including Giardia and Coliform challenge tests, show that the microfiltration system capabilities meet and exceed current and pending regulatory requirements, despite a highly variable water supply source. A detailed capital and operational cost comparison shows microfiltration to be cost effective. Additionally, microfiltration offers various other advantages, such as improved water quality and a barrier against microbial contaminants. Generally, membrane filtration systems, such as microfiltration, have slightly higher capital and operational costs than conventional treatment plants. However, in certain situations, such as the one highlighted in this paper, microfiltration in combination with conventional treatment is cost effective and improves overall water quality.