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Study on Conductivity of Ion-exchange Resin Packed in Continuous Electrodeionization for the Treatment of Low-Level Radioactive Wastewater

Author: SunXian
Tutor: LingQiu；ZhaoZuo
School: Nanhua University
Course: Nuclear Technology and Applications
Keywords: Low - level liquid waste Continuous electricity desalting An ion exchange resin Conductivity
CLC: X703
Type: Master's thesis
Year: 2011
Downloads: 55
Quote: 0
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Abstract


With the gradual depletion of oil, coal and other fossil fuel energy , has been the rapid development of nuclear energy as an important alternative energy . Nuclear waste management is an important part of the process of the development of nuclear energy can not be ignored . Treatment and disposal of low - level liquid waste is an important part of the treatment of nuclear waste . Continuous electricity desalting (Continuous Electrodeionization, CEDI) technology in recent years, in electrodialysis 's based on the combination of ion exchange technology to develop new water treatment technology . Compared with traditional low-level radioactive liquid waste treatment process , CEDI technology with continuous depth desalination the resin without pH renewable , in theory, no radioactive waste resins , high removal efficiency advantages , in line with the principle of efficient , energy-saving , radioactive waste quantifiable . The ion-exchange resin filled in the CEDI device unit to reduce the resistance of the freshwater chamber , improving radionuclide ion mobility and reduced energy consumption plays an important role. The conductivity of this study by the analysis of the ion exchange resin conductive mechanism , create an ion exchange resin, the conductivity test method , and measured using the test method six kinds of a single kind of ion exchange resin bed , as well as three kinds of mixed ion exchange resin bed , in addition to measuring the conductivity of the three kinds of cation-exchange resin in the different counter - ion solution . In this study, the typical PWR circuit long life corrosion activation products Co. and fission products Sr , Cs as a representative radionuclides of different ion exchange resin filled CEDI module processing simulation study of the low - level liquid waste . Ion exchange resin conductivity measurements the CEDI module operation results were compared to the following conclusions : ( 1 ) is CEDI film heap conductive filling the ion exchange resin conductive negatively correlated ; (2 ) the conductive ability of CEDI module of different nuclides ion removal efficiency and wherein the ion exchange resin packed in the appropriate counter - ion solution was positively correlated.

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CLC: > Environmental science, safety science > Processing and comprehensive utilization of waste > General issues > Wastewater treatment and utilization
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