本文概述了相关决策过程的步骤 在未来工厂扩建期间添加膜。最初的步骤包括 可行性评估，以确定可能出现的任何现场特定或水质挑战 将膜从进一步考虑中排除。接下来，初步设计可以揭示 现场布局备选方案、预处理工艺要求和预算成本 与常规治疗相比。如果治疗存在不确定性 在这一过程中，可以进行初步测试。最后，对所有重要的 场地和扩建问题（例如，未来扩建的可用空间、未来的风险） 在开始设计之前，可以进行法规遵从性、工厂液压等方面的测试 用于膨胀的膜。 以莫德斯托灌溉区（MID）的经验为例 如何引导这一决策过程。从36 mgd扩大到72 mgd， 膜似乎是现有传统水处理厂的可行替代品 （WTP）列车在中部。包括图。

This paper outlines the steps of the decision making process associated with adding membranes during a future plant expansion. The initial steps include feasibility assessments to determine any site-specific or water quality challenges that may eliminate membranes from further consideration. Next, preliminary design can reveal site layout alternatives, pretreatment process requirements, and budget-level costs for comparison to conventional treatment. If there are uncertainties with the treatment process, pilot testing can be performed. Finally, a thorough evaluation of all significant site and expansion issues (e.g., available space for future expansions, risk for future regulatory compliance, plant hydraulics, etc.) can be made prior to embarking on design of membranes for expansion. The experiences of the Modesto Irrigation District (MID) are highlighted as an example of how to navigate this decision-making process. With an expansion from 36 to 72 mgd, membranes seemed a viable alternative to the existing conventional water treatment plant (WTP) train at MID. Includes figure.