沉淀-微滤组合工艺处理模拟含碘放射性废水
发布时间：2018-08-30 08:53
【摘要】：采用实验室规模的沉淀与膜分离组合工艺处理模拟含放射性I-废水,初始I-浓度约为5 mg·L~(-1),Na_2SO_3投加量为40 mg·L~(-1),CuCl投加量为260 mg·L~(-1)。分析考察了不同水温条件下的除碘效果及其他水质参数变化情况和两个膜通量4.17×10~(-6) m·s~(-1)和8.33×10~(-6) m·s~(-1)运行条件下的膜污染情况。运行时间均为168 h,处理含碘离子的废水水量为1540 L。两个膜通量在各自运行期间,平均去除率为94.8%,出水水质较稳定,但是出水的Cu(Ⅱ)离子含量较高,需要增加后续除铜工艺;最终膜比通量分别降至初始膜比通量的65.0%和55.0%,膜组件经物理和化学清洗后SF值分别恢复至初始SF值的90.0%和79.0%。反应结束后两次试验的CF(浓缩倍数)平均值为2.02×10~3,试验产生的污泥体积较小。
[Abstract]:Simulated radioactive I- containing wastewater was treated by a laboratory-scale precipitation and membrane separation process. The initial concentration of I- was about 5 mg L-1 and Na2SO3 was 40 mg L-1 ~ (-1) CuCl was added to 260 mg L-1. The effect of iodine removal and other water quality parameters under different water temperature conditions and the membrane fouling under two membrane fluxes of 4.17 脳 10 ~ (-6) s ~ (-1) and 8.33 脳 10 ~ (-6) Ms ~ (-1) were analyzed and investigated. The operation time is 168h and the water quantity of the wastewater containing iodine ion is 1540 L. The average removal rate of the two membrane fluxes was 94.8, and the effluent water quality was stable, but the Cu (鈪，
本文编号：2212593
[Abstract]:Simulated radioactive I- containing wastewater was treated by a laboratory-scale precipitation and membrane separation process. The initial concentration of I- was about 5 mg L-1 and Na2SO3 was 40 mg L-1 ~ (-1) CuCl was added to 260 mg L-1. The effect of iodine removal and other water quality parameters under different water temperature conditions and the membrane fouling under two membrane fluxes of 4.17 脳 10 ~ (-6) s ~ (-1) and 8.33 脳 10 ~ (-6) Ms ~ (-1) were analyzed and investigated. The operation time is 168h and the water quantity of the wastewater containing iodine ion is 1540 L. The average removal rate of the two membrane fluxes was 94.8, and the effluent water quality was stable, but the Cu (鈪，
本文编号：2212593
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