自从年在加利福尼亚州的一些地下水中发现高氯酸盐污染以来 1997年，它在全国许多其他地方被发现。美国 美国环境保护局（USEPA）估计，40个州的地下水具有 可能被高氯酸盐污染，以及实际饮用水受到高氯酸盐污染 其中大约一半都记录了化学物质。高氯酸盐（ClO4） -)似乎是 与高氯酸铵的历史制造、使用或加工有关 （NH4ClO4），一种固体火箭燃料。1998年3月，美国环保局正式将高氯酸盐添加到 饮用水污染物候选名单（CCL）。它对饮用水供应的监测是有效的 1999年根据《无管制污染物监测规则》（UCMR）获得授权。初选 对高氯酸盐毒性的担忧还包括其对甲状腺的已知不良影响 可能的致癌、发育、生殖和免疫毒性作用。 作为MWH与休士顿大学之间的合作努力，两个主要 这项正在进行的研究的目标是: 展示传统离子交换技术的长期性能 去除高氯酸盐；和 评估盐水处理的三种不同替代方案（化学、生物、电解） 再利用。 在实现这些目标的同时，试点规模系统的基本要求是 确保净化水的高氯酸盐浓度保持在最近降低的浓度以下 加州公共卫生服务部高氯酸盐咨询行动水平为4 ug/L。包括表格、数字。

Since the discovery of perchlorate contamination in a number of California groundwaters in 1997, it has been detected in many other locations across the country. The United States Environmental Protection Agency (USEPA) estimates that groundwaters in 40 states have the potential to be contaminated with perchlorate, and actual drinking water contamination with this chemical has been documented in approximately half of them. Perchlorate (ClO4 -) appears to be linked to the historical manufacturing, usage, or processing of ammonium perchlorate (NH4ClO4), a solid rocket fuel. In March 1998, the USEPA formally added perchlorate to the drinking water contaminant candidate list (CCL). Its monitoring in drinking water supplies was mandated in 1999 under the Unregulated Contaminants Monitoring Rule (UCMR). The primary concerns over perchlorate toxicity include its known adverse effect on the thyroid gland, as well as possible carcinogenic, developmental, reproductive, and immunotoxic effects. As a collaborative effort between MWH and the University of Houston, the two primary objectives of this on-going research are to: demonstrate the long-term performance of conventional ion-exchange technology for perchlorate removal; and, evaluate three disparate alternatives (chemical, biological, electrolytic) for brine treatment and reuse. While addressing these objectives, the underlying requirement of the pilot-scale system is to ensure that the treated water perchlorate concentration remains below the recently lowered California Department of Public Health Services perchlorate Advisory Action Level of 4 ug/L. Includes tables, figures.