为了符合美国环境保护局（USEPA）的砷标准以及锰和铁的二次最大污染物 在美国中西部的许多地区，水中的浓度（MCL）分别为10µg/L、50µg/L和300µg/L 自来水公司必须在过滤前加入强氧化剂，以氧化还原形式的水 砷、锰和铁。游离氯和高锰酸盐是最常见的两种 用于解决砷、锰和铁问题的化学氧化剂。在美国中西部 在美国，工程实践传统上倾向于使用高锰酸盐作为 选择氧化剂，然后进行绿砂过滤，从源头上去除锰 水域。然而，大多数水处理厂的工作人员发现高锰酸盐不适合使用 使用它有很多原因，包括:它会弄脏它接触到的所有东西；过量原因 “粉红”水；剂量不足会导致锰峰值；以及处理问题。有一个 真正需要比较氯和高锰酸盐在锰中的有效性（以及 砷）去除系统，更重要的是，提供更好的指导 每种氧化剂都最适合解决铁、锰和/或砷的问题。 从全尺寸处理厂的观察结果被用来说明适当的 化学氧化剂的应用。包括2个参考文献、表格和图表。

In order to comply with the United States Environmental Protection Agency's (USEPA's) arsenic standard and the manganese and iron secondary maximum contaminant levels (MCLs) in water (10µg/L, 50µg/L, and 300µg/L, respectively), many Midwestern water utilities must add a strong oxidant before filtration to oxidize the reduced forms of arsenic, manganese and iron. Free chlorine and permanganate are the two most common chemical oxidants used to address arsenic, manganese, and iron issues. In the Midwestern United States, engineering practices have traditionally favored the use of permanganate as the oxidant of choice, followed by green sand filtration to remove manganese from source waters. Most water treatment plant personnel, however, find permanganate undesirable to use for a number of reasons, including: it stains everything it contacts; overdosing causes "pink" water; under-dosing can cause manganese spikes; and, handling issues. There is a real need to compare the effectiveness of chlorine and permanganate in manganese (and arsenic) removal systems and, more importantly, to provide better guidance as to when each oxidant is most appropriate to address an iron, manganese, and/or arsenic problem. Observations from full-scale treatment plants are used to illustrate the appropriate applications of chemical oxidants. Includes 2 references, table, figures.