An electrodialysis system and method for continuous concentration and desalination

An electrodialysis and electrodialysis membrane technology, applied in the field of water treatment, can solve the problems of complex process and difficult control of water balance, and achieve the effect of high concentration multiple.

Active Publication Date: 2016-04-13
ZHEJIANG CREATION ENVIRONMENT TECH
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  • Application Information

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Problems solved by technology

But the process is more complicated, and the water balance is difficult to control

Method used

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  • An electrodialysis system and method for continuous concentration and desalination

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Embodiment Construction

[0018] Combine below figure 1 The present invention will be further described with specific embodiments.

[0019] An electrodialysis system for continuous concentration and desalination, such as attached figure 1 As shown, the electrodialysis membrane stack 1 is included, the desalted water tank 7 is connected to the desalted water inlet 8 of the electrodialysis membrane stack 1 through the desalination pump 4, and the concentrated water tank 6 is connected to the concentrated water of the electrodialysis membrane stack 1 through the concentrated water pump 3 The inlet 9 and the pole water tank 5 are connected to the pole water inlet 13 of the electrodialysis membrane stack 1 through the pole water pump 2, and also include a high-frequency power supply and matching pipe valves. The desalinated water tank 7 is divided into a desalted water tank A room 16 and a desalted water tank Room B 17 is divided into two parts, the desalted water tank B room 17 is input with salt water to...

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Abstract

The invention relates to the technical field of water treatment, particularly an electrodialysis system capable of continuous concentration and desalting. A desalted water tank is divided into a chamber A and a chamber B, wherein the chamber B is used for inputting saline water to be treated; the bottom of the chamber B is connected to a desalted water inlet of an electrodialysis membrane set through a desalted water pump; a desalted water outlet of the electrodialysis membrane set is connected to the chamber A; the chamber A is communicated with the bottom of the chamber B; the upper part of the chamber A is provided with a desalted water overflow port; a concentrated water outlet of the electrodialysis membrane set is connected to a concentrated water tank; the upper part of the concentrated water tank is provided with a concentrated water overflow port; and a pole water outlet of the electrodialysis membrane set is connected to a pole water tank. The invention also relates to a continuous concentration and desalting method which is used for performing continuous concentration and desalting by using the electrodialysis system. The concentrated water is self-circulated to control the concentration of the concentrated water and the flow balance between continuous influent water and effluent water in the desalted water tank, thereby achieving the goals of continuous desalting and continuous concentration. The system and method are suitable for the field of treatment of water with high quantity and high weight concentration.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to an electrodialysis system and method for continuous concentration and desalination. Background technique [0002] Electrodialysis is a membrane separation technology that uses the selective permeability of the charged membrane and the action of the electric field to separate ionic substances in water to achieve the desired purpose of desalination and concentration. Due to the characteristics of low operating pressure and high concentration multiple, electrodialysis technology has been widely used in wastewater, food and pharmaceutical industries. [0003] The electrodialysis desalination concentration process generally adopts the batch method. The invention patent with the patent application number 201410285122.X adopts the electrodialysis cycle treatment method to treat nuclear industrial wastewater in batches. When the electrodialysis desalination solution is reduced t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/469
CPCC02F1/4693Y02A20/124
Inventor 洪海云包进锋
Owner ZHEJIANG CREATION ENVIRONMENT TECH
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