在最终确定最佳设计之前，必须仔细评估重力过滤装置的选项。本文解释了许多备选方案，确定了它们的许多优点和缺点，并回顾了过滤系统组件之间的相互关系，以便备选方案能够与考虑中的每个项目的特点相匹配。本文提供了一些例子来说明这些概念。包括36个参考文献、表格、图表。

Options for a gravity filtration unit must be carefully evaluated before an optimum design can be finalized. This article explains a number of alternatives, identifies many of their advantages and disadvantages, and reviews the interrelationship of the components of a filtration system so that alternatives can be matched with the peculiarities of each project under consideration. Examples are provided to demonstrate these concepts. Includes 36 references, tables, figures.