Argonne National Laboratory, Energy Systems Division, 9700 S. Cass Avenue, Argonne, Illinois 60439, USA.
Water Environ Res. 2013 Jan;85(1):77-86. doi: 10.2175/106143012x13373575831033.
To meet the stringent Great Lakes Initiative (GLI) wastewater discharge mercury (Hg) limit of 1.3 ppt (ng/L), mercury removal technologies need to be identified and investigated. The goals of this study were to (1) identify and assess available wastewater treatment technologies for mercury removal from an oil refinery wastewater; and (2) conduct bench-scale tests to provide comparable, transparent, and uniform results to assess their performance at low mercury concentrations. The study found that many tested technologies were able to achieve the GLI mercury target concentration at the bench-scale, albeit with different efficiencies and engineering implications. These results demonstrate that at this scale there is no fundamental physical or chemical barrier to achieving < 1.3 ng Hg/L in the tested wastewater. The study also found that some technologies were effective on particulate mercury whereas others were effective on dissolved mercury. One emerging treatment technology was found to be effective on both particulate and dissolved mercury. Three mercury-removal technologies--ultrafiltration (particulate mercury), adsorption (dissolved mercury), and an emerging reactive filtration technology (particulate and dissolved mercury)--are recommended for further study. This research offers treatment alternatives for different forms of mercury in an oil refinery wastewater, which might be applicable to other types of mercury-containing wastewater.
为了达到严格的大湖倡议（GLI）废水排放汞（Hg）限值 1.3 ppt（ng/L），需要确定和研究汞去除技术。本研究的目的是：（1）确定和评估从炼油厂废水中去除汞的现有废水处理技术；（2）进行中试试验，以提供可比、透明和统一的结果，评估其在低汞浓度下的性能。研究发现，许多经过测试的技术在中试规模上能够达到 GLI 汞目标浓度，尽管效率和工程意义不同。这些结果表明，在这个规模上，在测试废水中达到<1.3ng Hg/L 没有根本的物理或化学障碍。研究还发现，一些技术对颗粒态汞有效，而另一些技术对溶解态汞有效。一种新兴的处理技术对颗粒态和溶解态汞都有效。推荐超滤（颗粒态汞）、吸附（溶解态汞）和一种新兴的反应过滤技术（颗粒态和溶解态汞）三种汞去除技术进行进一步研究。这项研究为炼油厂废水中不同形态的汞提供了处理选择，可能适用于其他类型的含汞废水。
