Removal of nickel and strontium from simulated radioactive wastewater via a pellet coprecipitation-microfiltration process

摘要

In order to increase the decontamination factor (DF) and concentration factor (CF) for the treatment of radioactive wastewater, a pellet coprecipitation microfiltration process which aimed at removing the neutron activation product ~(63)Ni and fission product ~(90)Sr was studied. In this study average DFs were (4.60 ± 0.42) × 10~3 for nickel and 559 ± 24 for strontium, respectively. When about 1.8 m~3 wastewater was treated, the sludge volume was significantly minimised after 24 h settling and CF reached over 1×9 10~3. DFs and CF values were improved by 1–2 orders of magnitude in this study compared with those achieved by conventional methods.