本powerpoint演示文稿首先简要概述了问题陈述，其中包括:大约55000个CWS中的90%以上 服务不到1万人；和 这些系统的处理方法是 变得更加复杂，导致 难以处理的残余物。剩余物管理策略包括以下内容: 关注的污染物是什么； 如何去除这些污染物； 残余物的类型和数量是什么 为每个系统制作；和 如何处理这些残留物？项目的挑战是提供设计和维护 以有用的格式提供信息 向小型系统运营商，并鼓励选择治疗方法 基于产生的残余物。列出了放射性核素残留物处理工艺，以及美国环境保护局的处置方案、砷残留物、离子交换/吸附和最大限度地减少反洗量。包括表格、数字。

This powerpoint presentation begins by providing a brief overview of the statement of problem that included: more than 90% of roughly 55,000 CWSs serve fewer than 10,000 people; and, the treatment for these systems is becoming more complex, resulting in residuals that are difficult to handle. The strategy of residuals management includes the following: what are the contaminants of concern; how can these contaminants be removed; what type and quantity of residual is produced for each system; and, how can this residual be disposed of? Project challenge was to provide design and maintenance information in a format that will be useful to small system operators, and to encourage the choice of treatment based on the residual produced. Radionuclide residuals treatment processes are listed, along with U.S. Environmental Protection Agency disposal options, arsenic residuals, ion exchange/adsorption, and minimizing backwash volume. Includes tables, figures.