1993年，世界卫生组织建议将砷的饮用水标准从50 pg/l降至10 pg/l。粒状氢氧化铁是领先的工艺技术，可应用于地下水现场，以达到即将达到的标准。Severn Trent Water决定在其16个站点实施这项技术，但需要确认媒体的可用性。与世界氧化铁技术领导者德国拜耳公司（Bayer AG Germany）合作开发的新一代三氧化二铁介质可以进行质量控制，其供应得到保证。本文详细介绍了开发工作，提供了中试试验的初步结果，并重点介绍了介质和吸附系统在整个公司的实施情况。包括3个参考文献、图表。

In 1993 the World Health Organization recommended that the drinking water standard for arsenic be reduced from 50 pg/l to 10 pg/l. Granular ferric hydroxide is the leading process technology that can be applied to groundwater sites to enable the impending standard to be met. Severn Trent Water decided to implement this technology at sixteen of its sites, but required confirmation of media availability. Development work with Bayer AG Germany, a world leader in iron oxide technology, led tothe production of a new generation of ferric media that could be quality controlled and whose supply was guaranteed. This paper details the development work, provides initial results from pilot plant trials and highlights how the media and adsorber systems are being implemented across the company. Includes 3 references, figures.