Multichannel electrodialysis device

Abstract

The invention discloses a multichannel electrodialysis device. The multichannel electrodialysis device comprises an upper electrode plate and a lower electrode plate, wherein a cylindrical membrane stack component is arranged between the upper electrode plate and the lower electrode plate, and is provided with a plurality of material liquid channels penetrating through the membrane stack component along a vertical axial direction; electrolyte tubes are respectively arranged on the upper electrode plate and the lower electrode plate; electrolyte openings are formed in the electrolyte tubes; the electrolyte tubes are communicated with the outside through the corresponding electrolyte ports; at least four material liquid openings are formed in positions, corresponding to the material liquid channels, of the upper electrode plates and / or the lower electrode plate; one end, communicated with the outside, of each material liquid opening is positioned at the side face of the upper electrode plate and / or the lower electrode plate; the other end of each material liquid opening is communicated with the corresponding material liquid channel; electrode binding posts are respectively arranged on the upper electrode plate and the lower electrode plate. The multichannel electrodialysis device provided by the invention has the advantages of less liquid leakage, high current efficiency, high desalinization efficiency and the like.

Description

technical field [0001] The invention relates to the field of water treatment devices, in particular to a multi-channel electrodialysis device. Background technique [0002] An electrodialysis device is a device that directly uses electrical energy to separate ions or charged small molecules. Electroosmotic folding technology has developed into a large-scale chemical unit process, which occupies an important position in the field of membrane separation. Widely used in chemical desalination, seawater desalination, food, medicine and wastewater treatment, etc., has become the main production method of drinking water in some areas, with low energy consumption, significant economic benefits, flexible device design and system application, convenient operation and maintenance, It has the advantages of no pollution to the environment, long service life of the device, and high recovery rate of raw water. The core component of electrodialysis is the ion exchange membrane, which main...

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Problems solved by technology

[0003] Today's industrial production and other fields have higher and higher requirements for electrodialysis devices, but most of the electrodialysis devices on the market are square, and there can only be four liquid channels at most on the electrodialysis device, and there are dead angles; in the actual electrodialysis During the application process, there are often phenomena such as solution leakage and uneven fluid flow in the compartment, resulting in blockage of water distribution channels, reduction of current efficiency and desalination efficiency.

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