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发明公开
CN106653131A 一种加长流道的分离放射性废水中硼和放射性核素的方法 无效 - 驳回

一种加长流道的分离放射性废水中硼和放射性核素的方法
摘要：
本发明公开了一种加长流道的分离放射性废水中硼和放射性核素的方法包括：1）设置膜堆，在该膜堆中交替排布若干个阳极和阴极，相邻的阳极和阴极构成一电场，在阳极和阴极之间设置阳离子交换膜和阴离子交换膜，形成阴极室、阳极室和淡水室；2）在阳极室、阴极室和淡水室内填充离子交换树脂；3）分别串联膜堆内的阴极室、阳极室和淡水室构成三条流道，向这三条流道内通入放射性废水，淡水室中的硼酸根离子在电场的作用下迁移至阳极室，淡水室中的核素离子迁移至阴极室，从而分离淡水室内放射性废水中的硼和放射性核素；在分离过程中，控制处于同一电场的阳极室与淡水室中硼的平均浓度的比值不大于35。
摘要（英）：

The invention discloses a method for separating boron and radionuclides from radioactive wastewater by lengthening flow channels. The method comprises the steps that firstly, a membrane stack is arranged, wherein a plurality of anodes and cathodes are alternately arranged in the membrane stack, electric fields are formed by adjacent anodes and cathodes, cation exchange membranes and anion exchange membranes are arranged between the anodes and the cathodes, and cathode chambers, anode chambers and fresh water chambers are formed; secondly, ion exchange resin is filled in the cathode chambers, the anode chambers and the fresh water chambers; thirdly, the cathode chambers, the anode chambers and the fresh water chambers in the membrane stack are connected in series respectively to form the three flow channels, the radioactive wastewater is fed into the three flow channels, borate ions in the fresh water chambers are transferred into the cathode chambers under the action of the electric fields, nuclide ions in the fresh water chambers are transferred into the anode chambers, and accordingly boron and the radionuclides are separated from the radioactive wastewater in the fresh water chamber. In the separation process, the ratio of the mean concentration of boron in the cathode chambers to the mean concentration of boron in the fresh water chambers is equal to or less than 35, wherein the cathode chambers and the fresh water chambers are located in the same electric field.

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