Electrodialysis seawater desalination system capable of realizing power generation through coupling of solar energy and reverse electrodialysis

An electrodialysis, solar energy technology, applied in seawater treatment, water/sewage treatment, general water supply saving, etc., can solve problems such as difficulty in realizing dreams and limited power sources, and achieve the effect of reducing salt, reducing system costs, and reducing impact.
CN110844981APending Publication Date: 2020-02-28SUNUP ENVIRONMENTAL TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SUNUP ENVIRONMENTAL TECH CO LTD
Publication Date
2020-02-28

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Abstract

The invention provides an electrodialysis seawater desalination system capable of realizing power generation through coupling of solar energy and reverse electrodialysis. The electrodialysis seawaterdesalination system comprises: an electrodialysis device, which is used for desalinating raw seawater and outputting fresh water and concentrated seawater; a solar power generation device, which is used for converting solar energy into electric energy; a concentrated seawater storage device, which is used for storing the concentrated seawater output by the electrodialysis device; a reverse electrodialysis device, which is used for generating electric energy by utilizing the salinity difference between the raw seawater and the concentrated seawater and discharging low-concentration saline water; a plurality of direct-current water pumps, which are used for conveying raw seawater to the electrodialysis device and conveying the raw seawater and the concentrated seawater to the reverse electrodialysis device; and a power supply management device, which is used for distributing the direct-current electric energy output by the solar power generation device or the reverse electrodialysis device to dialysis membrane stacks and the direct-current water pumps. With the system, the sea water desalination system can be well used in areas lack of electric energy so as to provide water sources required by life and production.
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Description

technical field

[0001] The invention relates to the technical field of seawater desalination by electrodialysis, in particular to an electrodialysis seawater desalination system with solar energy coupling reverse electrodialysis power generation. Background technique

[0002] Desalination is the process of obtaining fresh water from sea water. Currently used seawater desalination methods include seawater freezing method, electrodialysis method, distillation method, reverse osmosis method, and ammonium carbonate ion exchange method. At present, reverse osmosis membrane method and distillation method are the mainstream in the market, which require a lot of electric energy. For remote areas or islands far away from the land, the source of electric energy required for the desalination process is limited, which makes it difficult to realize the dream of desalination in remote areas and islands.

[0003] Electrodialysis technology refers to the membrane separation process in whic...

Claims

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