The U.S. Environmental Protection Agency conducted an Arsenic Demonstration Program (ADP) whereby 50 full, small-scale arsenic removal treatment systems were evaluated for removing arsenic to below the maximum contaminant level of 10 μg/L and their operating cost for a minimum of 1 year. The majority (28) of the systems installed were adsorptive media (AM) technology with the media replaced when exhausted. This paper reports on the results of two ADP projects and two laboratory rapid small-scale column tests (RSSCTs) using the iron-based media, Bayoxide E33 (E33) AM for the removal of arsenic (As) and the co-occurring contaminants (COCs) of vanadium and to a lesser degree fluoride (F) and nitrate (NO₃). The ADP studies found that the AM effectively removed the COC of V, but with a lower removal capacity than of As. One ADP study found the AM to be ineffective for the removal of F and NO_3. The RSSCT conducted on two other source waters also found vanadium to be removed by the same AM. The study results suggested the AM selectively sequence of As > V > F = N. The study also investigated the AM to achieve an As limit of 5 μg/L. The AM was found to reduce As to below 5 μg/L with around 30% shorter treatment run lengths.

美国环境保护署开展了一项砷示范计划 (ADP)，评估了 50 个完整的小规模除砷处理系统将砷去除至低于 10 微克/升的最大污染物水平及其至少 1 年的运行成本. 安装的大多数系统 (28) 是吸附介质 (AM) 技术，当介质耗尽时更换介质。本文报告了使用铁基介质 Bayoxide E33 (E33) AM 去除砷 (As) 和共存污染物的两个 ADP 项目和两个实验室快速小规模柱测试 (RSSCT) 的结果（ COCs) 的钒和较低程度的氟化物 (F) 和硝酸盐 (NO ₃）。ADP 研究发现，AM 有效地去除了 V 的 COC，但去除能力低于 As。一项 ADP 研究发现，AM 对去除 F 和 NO ₃无效。对另外两个源水进行的 RSSCT 还发现，同一个 AM 可以去除钒。研究结果表明 AM 选择性序列为 As > V > F = N。该研究还调查了 AM 以达到 5 μg/L 的 As 限值。发现 AM 将 As 降低到 5 μg/L 以下，处理运行时间缩短约 30%。