这项研究的目的是首次评估中试规模的污水处理技术 Cr（VI）去除率小于5µg/L（即95%去除率）。一个主要的重点是评估 制造商为试验系统提供了在实验室研究中有效的介质，或 有希望但无法在实验室规模上进行适当测试的技术。 测试的技术包括离子交换系统（即柱状强碱和弱碱阴离子） 交换和基于反应器的强碱阴离子交换），一种使用钠的还原/过滤装置 亚硫酸盐和专有吸附介质系统（沸石和颗粒活性炭，或GAC）。 在独立于供应商的试验中，还使用了硫酸亚铁还原、凝固和过滤 测试。再生效率也被确定为表现最好的强碱阴离子 交换树脂，包括回收盐水的影响，以尽量减少残余物。 能够 持续处理至低于5µg/L的水平，包括柱强碱阴离子交换、弱碱 阴离子交换，以及使用硫酸亚铁进行还原/凝固/过滤。包括19个参考文献、表格和图表。

The goal of this research was to evaluate, for the first time, pilot-scale treatment technologies for Cr(VI) removal to less than 5 µg/L (i.e. 95% removal). A major focus was to evaluate manufacturer-provided pilot systems with media that was effective in bench-scale studies, or technologies that were promising but could not be appropriately tested at the bench scale. Technologies tested included ion exchange systems (i.e. column strong- and weak-base anion exchange, and reactor-based strong-base anion exchange), a reduction/filtration unit using sodium sulfite, and proprietary adsorptive media systems (zeolite and Granular Activated Carbon, or GAC). In vendor-independent tests, reduction with ferrous sulfate, coagulation, and filtration was also tested. Regeneration efficiency was also determined for the best-performing strong-base anion exchange resin, including the impact of recycling brine to minimize residuals. Technologies able to consistently treat to levels below 5 µg/L included column strong-base anion exchange, weak-base anion exchange, and reduction/coagulation/filtration using ferrous sulfate. Includes 19 references, tables, figures.