Lee Woo Rim, Eom Yujin, Lee Tai Gyu
Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea.
Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea.
Waste Manag. 2017 Feb;60:546-551. doi: 10.1016/j.wasman.2016.12.017. Epub 2016 Dec 24.
Mercury (Hg)-containing waste from various industrial facilities is commonly treated by incineration or stabilization/solidification and retained in a landfill at a managed site. However, when highly concentrated Hg waste is treated using these methods, Hg is released into the atmosphere and soil environment. To eliminate these risks, Hg recovery technology using thermal treatment has been developed and commercialized to recover Hg from Hg-containing waste for safe disposal. Therefore, we developed Hg recovery equipment to treat Hg-containing waste under a vacuum of 6.67kPa (abs) at 400°C and recover the Hg. In addition, the dust generated from the waste was separated by controlling the temperature of the dust filtration unit to 230°C. Additionally, water and Hg vapors were condensed in a condensation unit. The Hg removal rate after waste treatment was 96.75%, and the Hg recovery rate as elemental Hg was 75.23%.
来自各种工业设施的含汞废物通常通过焚烧或稳定化/固化处理，并留在管理场地的垃圾填埋场中。然而，当使用这些方法处理高浓度汞废物时，汞会释放到大气和土壤环境中。为了消除这些风险，已开发并商业化了利用热处理的汞回收技术，以便从含汞废物中回收汞进行安全处置。因此，我们开发了汞回收设备，在400°C、6.67kPa（绝对压力）的真空条件下处理含汞废物并回收汞。此外，通过将粉尘过滤单元的温度控制在230°C来分离废物产生的粉尘。此外，水和汞蒸气在冷凝单元中冷凝。废物处理后的汞去除率为96.75%，元素汞的汞回收率为75.23%。
