地表径流作为一种饮用水和废水处理方法，近年来受到了广泛关注。在多个设施进行的研究表明，陆流是去除生化需氧量（BOD）和悬浮固体（SS）的有效工艺，氮和磷的去除量较小。本文介绍了地表水流处理系统中与铁和去除相关的许多化学原理。本文还介绍了芬兰萨洛市一个正在运行的陆上流水处理系统的简要案例。Salo系统可实现97%的铁和锰去除率。包括8个参考文献、表格、图表。

Overland flow as a potable water and wastewater treatment method has received considerable attention in recent years. Research conducted at several facilities has shown overland flow to be an efficient process for removal of biochemical oxygen demand (BOD) and suspended solids (SS), with lesser removals of nitrogen and phosphorus. This article presents many of the chemical principles associated with iron and removal in an overland-flow water treatment system. A brief case history of an operating overland-flow water treatment system in Salo, Finland is also presented. The Salo system achieves 97 percent iron and manganese removal. Includes 8 references, tables, figures.