之前的研究表明，亚铁应用是一种有效且经济可行的方法，可以去除饮用水中残留的二氧化氯和亚氯酸根离子。然而，这种处理在降低氯酸盐离子浓度方面无效。为了解决这个问题，已经开发了组合方法（替代二氧化氯的产生和应用以及铁还原）来显著减少成品水氧氯残留。这些方法都是针对低浓度氯酸盐的形成和影响这篇文章的重点。 包括31个参考文献、表格、图表。

Previous investigations have shown ferrous iron application to be an effective and economically feasible method of removing residual chlorine dioxide and chlorite ion from drinking water. This treatment, however, was not effective in reducing concentrations of chlorate ion. To address this issue, combined methodologies (alternative chlorine dioxide generation and application together with iron reduction) have been developed that significantly reduce finished-water oxychlorine residuals. These methodologies and the effect of various treatment conditions toward low-level chlorate ion formation are the focus of this article. Includes 31 references, tables, figures.