Multistage electrodialysis brackish water desalination device

Abstract

The invention discloses a multistage electrodialysis brackish water desalination device. The multistage electrodialysis brackish water desalination device comprises a top cover plate, a bottom cover plate, a sealing gasket in a cavity formed by the top cover plate and the bottom cover plate, a positive electrode plate, a negative electrode plate, a dense water diversion tunnel, a fresh water diversion tunnel, an electrode water diversion tunnel, a group of anion membranes and cation membranes having ordered intervals, an alarm device and an independent power supply module which are arranged inorder. The multistage electrodialysis brackish water desalination device has the advantages that electrodialysis flow is long, desalination efficiency is high, water production rate per unit time islarge, and power consumption is less, and components of electrodialysis equipment can be rapidly and conveniently replaced.

Description

technical field [0001] The invention belongs to water treatment equipment, in particular to a multistage electrodialysis brackish water desalination device. Background technique [0002] At present, the existing electrodialysis desalination device consists of a top cover plate, a bottom cover plate, a sealing gasket, a positive electrode, a negative electrode, a diversion channel, and a group of positive and negative ion semipermeable membranes arranged at intervals. The raw water of the device flows in from one end, and the separated and desalted solution flows out from the other end. Therefore, the electrodialysis desalination process is short and the desalination efficiency is poor. [0003] Traditional electroosmotic equipment only has one set of power supply for power supply. When dealing with water with high salinity and high salinity, due to the characteristics of electricity, the low resistivity will cause the power supply to burn out, and the entire equipment will s...

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Problems solved by technology

[0002] At present, the existing electrodialysis desalination device consists of a top cover plate, a bottom cover plate, a sealing gasket, a positive electrode, a negative electrode, a diversion channel, and a group of positive and negative ion semipermeable membranes arranged at intervals. The raw water of the device flows in from one end, and the separated and desalted solution flows out from the other end. Therefore, the electrodialysis desalination process is short and the desalination efficiency is poor

[0003] Traditional electroosmotic equipment only has one set of power supply for power supply. When dealing with water with high salinity and high salinity, due to the characteristics of electricity, the low resistivity will cause the power supply to burn out, and the entire equipment will stop working. Therefore, electrodialysis cannot be guaranteed. The equipment continues to work stably

[0004] Damage to the electrode parts and power supply parts of the existing electroosmosis equipment will cause the entire equipment to fail to work and the water outlet will not be normal. After such damage, the overall replacement cost is too high, and the downtime is long. The working environment requires high requirements and the maintenance technology requirements are high.

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