A chip for seawater desalination and its preparation method

Abstract

The invention provides a chip used for sea water desalination. The chip comprises a base body, and a conductive layer and a protection layer which are laminated on the base body successively; the conductive layer is provided with a main groove; the main groove is used for diving the conductive layer into a cathode conductive layer and a anode conductive layer; the main groove is designed to pass through the conductive layer along the thickness direction; a plurality of sub-grooves are arranged in the cathode conductive layer and the anode conductive layer, and are communicated with the main groove; the number of the sub-grooves in the cathode conductive layer is equal to the number of the sub-grooves in the anode conductive layer. According to the preparation method, based on electroseparation technology, negative and positive ions in sea water are absorbed by electric field, and are enriched in the sub-grooves of the cathode conductive layer and the anode conductive layer, so that desalination of sea water in the main groove is realized. In addition, the sub-grooves are capable of realizing multiple times of desalination of sea water, desalination effect and the quality of obtained fresh water are improved greatly. The chip is capable of realizing applications of electroseparation technology in chip field, and solving the environment pollution problem of conventional sea waterdesalination chips, and is better in sea water desalination effect, and higher in the quality of obtained fresh water.

Description

technical field [0001] The invention belongs to the technical field of seawater desalination, and in particular relates to a chip for seawater desalination and a preparation method thereof. Background technique [0002] Seawater resources on the earth account for 97% of the total water volume, while fresh water resources only account for 3% of the total water volume. With the increasing population and increasing human social activities, human beings will be increasingly short of fresh water resources, therefore, seawater desalination technology is becoming more and more important. [0003] Seawater desalination technology is now usually applied to large equipment and portable small equipment. Among them, the electroseparation method is widely used in large-scale equipment due to its advantages of low energy consumption and low environmental pollution. However, large-scale equipment has disadvantages such as being unable to carry around and having high costs. [0004] Port...

AI Technical Summary

Problems solved by technology

However, the chips in portable seawater desalination equipment are basically based on the reverse osmosis (RO) membrane reverse osmosis technology. Due to the chemical reagents added during the desalination process, the corrosion products produced, etc. are discharged back to the sea along with the concentrated seawater. , which has adverse effects on the natural environment

At present, there is no portable seawater desalination chip based on the electric separation method.

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