Electromagnetic desalination process of seawater and desalination cell

Abstract

This invention relates to an electromagnetic seawater freshening method and a freshening pool, which is made up of a bottom cell, a pair of face-to-face set electrode boards and a pair of face-to-face set electromagnets that are both installed in four walls. Valvate fluid inlet, fluid outlet, and water inlet are set on side walls and there is no electron transfer between the electrodes and the solution. During the first half period, the electric field is leftward and the magnetic field is inward, where cations (R+) deflect left-downward while anions (R-) deflect right-downward. During the next half period, electric field and magnetic field simultaneously reverse and R+ deflect right-downward while R- deflects left-downward. The situation is similar in following periods. When R+ and R- in lower-layer region are enriched to supersaturation, crystals are separated out. Then pure water is discharged through upper pipes and new seawater is introduced into the system from the lower region. Again, crystals will be separated out or concentrated water will be discharged. This invention has the advantages of convenience to control, high freshening purity, saving energy and no pollution. Besides, concentrated water or crystals can be also obtained. It is suitable for large-scale industrial application.

Description

technical field [0001] The invention relates to a seawater desalination method, in particular to a seawater electromagnetic desalination method and a desalination pond. technical background [0002] There are more and more human beings on the earth, but there is less and less clean fresh water on the earth where human beings live, especially the densely populated big cities have less fresh water per capita, and the long-term massive exploitation of groundwater has caused a series of ecological disasters. But the vast sea has a huge amount of water but cannot be used directly. Therefore, seawater desalination equipment is used to extract water from the ocean to serve human beings through desalination. At present, there are electrodialysis, ion exchange, reverse osmosis and distillation methods for desalination of seawater. The cost of extracting fresh water from seawater desalination equipment is relatively high, especially the distillation method requires a large amount of ...

AI Technical Summary

Problems solved by technology

At present, there are electrodialysis, ion exchange, reverse osmosis and distillation methods for desalination of seawater. The cost of extracting fresh water from seawater desalination equipment is relatively high, especially the distillation method requires a large amount of heat supply during the processing process, and the osmosis method equipment is relatively expensive. The initial investment is large, which is not conducive to promotion and use

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