Separation process of electronic control ion selective permeable membrane

Abstract

The invention discloses a separation process of an electronic control ion selective permeable membrane. An electronic control ion exchange performance and an electronic control ion selective permeability of a membrane electrode are utilized in a double-diaphragm electrode reactor, oxidation-reduction potentials are alternately imposed on the double-diaphragm electrode reactor to control a synchronously imbedding and a synchronously releasing of targeted negative ions and positive ions, and under the action of field stress imposed by an auxiliary electrode, a separation and a recycle of the negative and positive ions in a dilute solution are achieved. According to the separation process of the electronic control ion selective permeable membrane, by means of the electronic control ion exchange performance of the selective permeable membrane electrode, targeted ions can selectively penetrate through a diaphragm by controlling electrode potentials of the membrane electrode, and thereby the efficient, synchronous, controllable and continuous separation and recycle of the negative and positive ions can be achieved.

Description

technical field [0001] The invention relates to a membrane separation process for synchronously separating and recovering anions and cations in a dilute solution, in particular to an electronically controlled ion-permeable membrane separation process for selectively and continuously separating and recovering anions and cations in a dilute solution. Background technique [0002] Most of the raw materials and intermediate products in the industrial production process contain various metal or non-metal ion impurities. The removal, purification or recovery of these trace impurities often become the key technical issues to improve the reaction efficiency and product quality; The control of toxic substances in the environment is becoming more and more stringent, and various industrial wastewater containing toxic metals and non-metal ions that are difficult to biodegrade are increasing. Because it is difficult to meet the technical and economic requirements of purification treatment...

AI Technical Summary

Problems solved by technology

[0007] The invention combines the advantages of ED and ESIX technologies, realizes the synchronous continuous selective separation and recovery of anions and cations in dilute solution on the basis of ESIX technology, and eliminates the secondary pollution problem caused by chemical regeneration agents in the existing ion exchange method , solve the problems of poor ion selectivity and large transfer resistance in the electrodialysis process, and provide an electronically controlled ion-selective permeation membrane separation process

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