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Device for processing charged ions in waste water through electromagnetism with electrodialysis

A technology for treating wastewater and charged ions, applied in separation methods, dispersed particle separation, etc., can solve the problems of low utilization efficiency per unit area of ​​ion exchange membrane, inability to increase ion movement speed, and prolong magnetic residence time, etc., to improve purification. Efficiency, increase migration speed, reduce energy consumption

Active Publication Date: 2014-02-12
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although the electromagnet is used in this invention to magnetize the ions in the wastewater, it cannot increase the velocity of the ions and prolong the actual residence time of the magnetic body, and the purification efficiency needs to be improved.
[0006] The application of notification number CN1526654A mentions the use of magnetoelectric dialysis to remove the salt in water, but in this invention, permanent magnets are used to provide a magnetic field for the entire equipment. Intensity adjustment to meet the needs of metal ion migration trajectory adjustment under a specific strength electric field; in addition, the device in this invention still uses the traditional parallel plate arrangement of pole plates and ion exchange membranes, so that when heavy metals are deflecting and migrating, ion exchange The utilization efficiency per unit area of ​​the membrane is too low, resulting in unnecessary energy consumption and material loss

Method used

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  • Device for processing charged ions in waste water through electromagnetism with electrodialysis
  • Device for processing charged ions in waste water through electromagnetism with electrodialysis
  • Device for processing charged ions in waste water through electromagnetism with electrodialysis

Examples

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Effect test

Embodiment 1

[0030] Example 1: The device in this example includes a power supply 1, a flowmeter 2, a loopless electrodialysis device 3, and a magnetic field generator 4. The power supply 1 and the flowmeter 2 are connected to the loopless electrodialysis device 3, and the magnetic field generator 4 is provided. At the position where the magnetic field generated by the loopless electrodialysis device 3 is perpendicular to the electric field.

[0031] The non-loop electrodialysis device 3 includes a stack membrane 5, an electrode 6, a casing 7, a water inlet 8, and a water outlet. The stack membrane 5 and the electrode 6 are arranged in the outer casing, and the electrodes are arranged outside the stack membrane; the stack membrane includes two pairs of membranes Yes, the membrane pair consists of a cationic monopolar membrane and an anion monopolar membrane, wherein the electrodes and the anion and cationic monopolar membranes separate the loopless electrodialysis device from left to right ...

Embodiment 2

[0033] Embodiment 2: The device in this embodiment includes a power supply 1, a flowmeter 2, a loopless electrodialysis device 3, and a magnetic field generator 4. The power supply 1 and the flowmeter 2 are connected to the loopless electrodialysis device 3, and the magnetic field generator 4 is provided. At the position where the magnetic field generated by the loopless electrodialysis device 3 is perpendicular to the electric field. The non-loop electrodialysis device 3 includes a stack membrane, an electrode, a casing, a water inlet, and a water outlet. The stack membrane and the electrode are arranged in the outer casing, and the electrode is arranged outside the stack membrane; the stack membrane includes two pairs of membrane pairs, and the membrane pair consists of a pair of The polar membrane and a unipolar membrane are formed, wherein the bipolar membrane and the unipolar membrane separate the loopless electrodialysis device from left to right into an anode chamber 13...

Embodiment 3

[0034] Example 3: When dealing with the sulfuric acid waste liquid in the production of lead-acid batteries, the device in Example 2 can be used to initially treat the acid waste water, and the acid in the waste water can be recovered. The device in 1, the heavy metal salt of the waste water is removed in depth, and the device structure used is the same as that of Embodiments 1 and 2, and the specific methods are as follows: when using, simulate the sulfuric acid waste liquid in the production of 0.01mol / L lead-acid batteries, and use The flow rate is passed into the electrodialysis device, connected to the DC power supply, the membrane stack voltage is adjusted to 1.5V, and the current density is 15mA / cm 2 and the intensity of the external magnetic field is 0.5T, the unipolar membrane is selected JAM-II homogeneous anion exchange membrane and JCM-II homogeneous cation exchange membrane, the bipolar membrane is Neosepta BP-1, and the At the position of 25° angle, the bipolar...

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Abstract

The invention discloses a device for processing charged ions in waste water through electromagnetism with electrodialysis. The device comprises a power supply, a flowmeter, a loop-free electrodialysis device and a magnetic field generator, wherein a controllable magnetic field vertical to a direct-current electric field and a water flow direction is added in a direct-current electric field spaced supplied by the electrodialysis device. The electric field intensity and the external magnetic field intensity of the electrodialysis device are controlled, and the movement locus of positive and negative ions in waste water is changed according to the demand, so that the positive and negative ions in waste water are deflected, the dwell time of the charged ions in a purification device is prolonged, the separation efficiency of the charged ions is more effectively increased, and therefore heavy metals are enriched and concentrated to be convenient for recycle during waste water purification.

Description

technical field [0001] The invention relates to a water treatment device, in particular to an electrodialysis sewage treatment system and a treatment device for electromagnetic synergistic enhancement of charged ion separation, belonging to the technical field of environmental protection. Background technique [0002] Heavy metal wastewater is one of the industrial wastewaters with the most serious environmental pollution and great harm to human body. The heavy metal wastewater mainly comes from mine tunnel drainage, waste quarry leaching water, tailings drainage in beneficiation yards, non-ferrous metal smelting plant dust removal and drainage, non-ferrous metal processing plant pickling wastewater, electroplating plant washing water for plating parts, iron and steel plant pickling drainage and Various industrial wastewaters such as electrolysis, pesticides, medicines, paints, and dyes have not only a wide range of sources, but also a large amount of water. Its composition...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/469
Inventor 瞿广飞林奕璐张军宁平成睿
Owner KUNMING UNIV OF SCI & TECH
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