ED (electrodialysis) water treatment system with intelligent temperature-adjusting, voltage-adjusting and ultrasonic effects

A technology of water treatment system and intelligent temperature adjustment, applied in the field of water treatment, can solve the problems of reducing electrodialysis desalination capacity, water crisis, increasing membrane resistance, etc., to reduce ion association phenomenon, increase ion migration speed, overcome concentration The effect of poor polarization

Inactive Publication Date: 2014-12-24
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] One of the serious problems facing the world in the 21st century is the water crisis, especially in the winter environment (close to zero degrees Celsius, or below zero degrees Celsius) in high latitudes. There are certain difficulties in electrodialysis water treatment
Electrodialysis technology was mainly used for the desalination of natural water with high salt content and seawater concentration at the earliest; electrodialysis technology has certain requirements on the working temperature of the system, and it is prone to concentration polarization during operation, resulting in scaling; in the electrodialysis treatment industry During the operation of sewage, with the extension of the operation time of the electrodialysis device, it will also adhere to the surface of the electrodialysis membrane to form active biological pollution; all of the above will reduce the desalination ability of electrodialysis (ED), increase the resistance of the flow channel, and increase the membrane Resistance, in severe cases, it will cause irreparable damage to the ED film

Method used

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  • ED (electrodialysis) water treatment system with intelligent temperature-adjusting, voltage-adjusting and ultrasonic effects
  • ED (electrodialysis) water treatment system with intelligent temperature-adjusting, voltage-adjusting and ultrasonic effects
  • ED (electrodialysis) water treatment system with intelligent temperature-adjusting, voltage-adjusting and ultrasonic effects

Examples

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Effect test

Embodiment 1

[0034] A kind of electrodialysis water treatment system of intelligent temperature regulation, pressure regulation and ultrasonic effect provided by the present invention, its structural diagram (see figure 1 ); the system includes: electrodialysis membrane stack 12 (see figure 2 ), electric field current temperature regulator 13, ultrasonic regulator 22, water sample central processing unit 3.

[0035] The voltage output port 14 of the electric field current temperature regulator 13 is connected with the anode 17 of the adjustable voltage electrode plate of the electrodialysis membrane stack 12, and the voltage output port 15 is connected with the negative electrode 16 of the adjustable voltage electrode plate of the electrodialysis membrane stack 12; The side support net 34 places the electrode plate anode and cathode solids on the main body support material 33 of the temperature-adjustable electrodialysis membrane stack 12 respectively; 20 groups of single-layer partition...

Embodiment 2

[0042] Use the same electrodialysis water treatment system with intelligent temperature regulation, pressure regulation and ultrasonic action as in Example 1; the device parameters of this example: the model of the ion exchange membrane used in the electrodialysis membrane stack is the same as that of Example 1, and the membrane pair Number N=200; electric heating double-layer partitions are used, the size of which is 800*1600mm, and the thickness of electric heating double-layer partitions is 2.0mm; the time relay in the ultrasonic regulator is set to open; the electrodialysis membrane stacks 12 of the system are simultaneously open Electric heating partition and ultrasonic function; a single electric heating double-layer partition 20 is between the negative film 35 and the positive film 36, forming a thermal film coupling effect; the electric heating double-layer partition 20 (see Figure 5 , Image 6 ) In the double-layer partition, one layer 40 plays the role of stirring, ...

Embodiment 3

[0044] An electrodialysis water treatment system using the same intelligent temperature regulation, pressure regulation and ultrasonic electrodialysis water treatment as in Example 1; the device parameters of this embodiment are: domestic homogeneous ion exchange membranes are used, and the number of membrane pairs N= 200; use electric heating double-layer partition (see Figure 5 , Image 6 ), its size is 800*1600mm, the thickness of electric heating double-layer partition is 2.0mm; The main support material of the stack 12 is polyvinylidene fluoride; the electrode material is a titanium wire-coated ruthenium electrode. The raw water sample analysis inlet 7 of the water sample central processor 3 takes the raw water sample, and after the analysis and detection of the water sample central processor 3, it is determined that the raw water is standard seawater, and its composition and content are: NaCl 26.423 g / L, MgSO 4 3.213 g / L, MgCl 2 2.348 g / L, CaCl 2 1.232 g / L, KCl 0.71...

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Abstract

The invention relates to an ED (electrodialysis) water treatment system with intelligent temperature-adjusting, voltage-adjusting and ultrasonic effects. The system comprises an ED membrane pack, an electric field current temperature regulator, an ultrasonic regulator, an incoming water flow velocity controller and a water sample central processing unit, wherein the ED membrane pack comprises a voltage-adjustable electrode plate, an electric heating separation plate, a temperature sensor, an ultrasonic transducer, amplitude transformers and ion exchange membranes; the water sample central processing unit specifically determines the ion type, the ion concentration, the water sample conductivity and the water sample viscosity according to analysis and detection results of partial raw water incoming water samples or partial produced fresh water samples and then sends out a control instruction to the raw water incoming water flow velocity controller, sends out a control instruction to the electric field current temperature regulator and sends out a control instruction to the ultrasonic regulator respectively. By the aid of the system, the concentration polarization produced during operation of an ED device can be reduced, association effects of ions in liquids can be reduced, and the migration rate of the ions can be increased. The system is particularly applicable to low-temperature environments in winter.

Description

technical field [0001] The invention relates to the field of water treatment, and more specifically relates to an electrodialysis water treatment system with intelligent temperature regulation, pressure regulation and ultrasonic action. Background technique [0002] One of the severe problems facing the world in the 21st century is the water crisis, especially in the winter environment (close to zero degrees Celsius, or lower than zero degrees Celsius) in high latitudes. There are certain difficulties in electrodialysis water treatment. Although the total amount of water resources in my country is relatively large, the distribution is uneven, and the per capita water resources are small. Many cities are often threatened by water shortages and water scarcity. Therefore, the development of new water sources and the control of water pollution have become important issues of concern to human society. In industrial fields, large volumes of waste water, such as saline aqueous sol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/469C02F1/36
Inventor 袁曦明袁一楠
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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