CN201981041U - Condensing chamber-free electrodeionization system - Google Patents
Condensing chamber-free electrodeionization system Download PDFInfo
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- CN201981041U CN201981041U CN2010206344081U CN201020634408U CN201981041U CN 201981041 U CN201981041 U CN 201981041U CN 2010206344081 U CN2010206344081 U CN 2010206344081U CN 201020634408 U CN201020634408 U CN 201020634408U CN 201981041 U CN201981041 U CN 201981041U
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- resin
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Abstract
The utility model discloses a condensing chamber-free electrodeionization system and method. A resin chamber is defined by an upper resin intercepting board, a lower resin intercepting board, an anode chamber and a cathode chamber, wherein a cation-exchange membrane and a mesh anode are accommodated in the anode chamber; another cation-exchange membrane and a mesh cathode are accommodated in the cathode chamber; the anode and the cathode are respectively connected with a direct current power supply; the upper resin intercepting board is connected with a water inlet; and the lower resin intercepting board is connected with a water outlet. Failed ion-exchange resin is electrically regenerated by using strong direct current with the current density of 250-500A/m<2>; during electrical regeneration, the regenerated ions are discharged out of the system by means of continuously-flowing water current in a clearance of the ion-exchange resin. The electrodeionization system has no condensing chamber; a pair of cation-exchange membranes is only needed for the devices in any size; and the condensing chamber-free electrodeionization system has high regeneration speed and is not influenced by the space between the ion-exchanger membranes. In addition, the condensing chamber-free electrodeionization system is suitable for purifying the draining water subjected to nanofiltration and reverse osmosis, electroplating and rinsing wastewater containing Cr (Vi) as well as water and waste water with the similar water qualities.
Description
Technical field
The utility model relates to electric deionizing method and system, especially relates to a kind of electric deionizing method and system that does not have the concentration compartments.
Technical background
The processing of the waste water that contains heavy metal ion that produces in the industry production processes such as required water purifying preparation of industries such as electric power, electronics, chemical industry, medicine and plating, process hides, mining, chemical color, printed circuit board (PCB) all will relate to ionic and remove.At present, the main method of removing water or waste water intermediate ion impurity both at home and abroad has ion exchange method, reverse osmosis method, electroosmose process, nano filtering process and electro-deionisation etc.These methods differ from one another.Wherein electro-deionisation has outstanding advantages such as not needing to consume chemical regenerant, separation efficiency height, environmental friendliness, therefore has the favorable industrial application prospect in the processing of water purification preparation and heavy metal wastewater thereby.But the electrodialysis of ion-exchanger that conventional electrodeionization has been actually in a kind of light chamber filling need be used many cationic exchange membranes and anion-exchange membrane simultaneously.Therefore, its system architecture complexity, the cost of manufacture height, I﹠M is inconvenience very.
Summary of the invention
The purpose of this utility model is to provide a kind of electric deionizing method and system that does not have the concentration compartments, is used for the ion, particularly Na of the dried up or waste water of branch
+, K
+, Cl
-, HCrO
4 -Contour deliquescent monovalent ion.
The technical solution adopted in the utility model is:
One, a kind of electric deionizing method that does not have the concentration compartments:
With two cationic exchange membranes with ion exchange resin and yin, yang electrode isolation; Take absorption and electricity regeneration alternate operation; Utilizing current density is 250～500A/m
2Strong direct current promote water power from, produce a large amount of OH
-With H
+Ion; Utilize the OH that is produced again
-Or H
+The ion exchange resin that ion pair lost efficacy is regenerated, and makes it be converted into OH type or H type; At electric regenerated simultaneously, by the current of continuous flow in the ion exchange resin gap, make the ion that is reproduced discharge system.
Two, a kind of electrodeionization system that does not have the concentration compartments:
Resin is held back plate on the upper end is, the lower end is that resin is held back plate down, one side is that anolyte compartment and opposite side are the indoor ion exchange resin of filling of resin that cathode compartment surrounds, the anolyte compartment places cationic exchange membrane and meshed anode from the inside to the outside successively, cathode compartment is placed another cationic exchange membrane and mesh cathode from the inside to the outside successively, meshed anode and mesh cathode connect direct supply respectively, have electrolyte outlet in anolyte compartment and both sides, cathode compartment upper end, have the electrolytic solution import in anolyte compartment and both sides, cathode compartment lower end, the electrolyte outlet of anolyte compartment's one side is connected with the electrolytic solution import of homonymy with electrolyte circulating pump through the electrolytic solution storage tank, the electrolyte outlet of negative electrode one side is connected with the electrolytic solution import of homonymy with another electrolyte circulating pump through another electrolytic solution storage tank, last resin is held back plate and is tapped into the mouth of a river, and following resin is held back plate and picked out the mouth of a river.
Described ion exchange resin is Zeo-karb, anionite-exchange resin or mixed uniformly Zeo-karb and anionite-exchange resin.
Hold back plate and be the plate of holding back that is furnished with 0.2～0.3mm hole for described two; Or the plate of holding back that the aperture is 0.15～0.2mm filtering net is housed near ion exchange resin one side, the aperture of holding back plate is 2～3mm.
The beneficial effect that the utlity model has is:
1) no concentration compartments;
2) device of any size all only needs a pair of cationic exchange membrane;
The ion of 3) being born again by the current of continuous flow in the ion exchange resin gap directly from the resin chamber evacuation system;
4) reproduction speed is fast, and is not subjected to the influence of ion-exchange membrane spacing under the situation that conditions such as current density, temperature remain unchanged.
The utility model be applicable to nanofiltration and reverse osmosis water outlet further purification, contain the purification of Cr (VI) electroplate rinsing wastewater and the purification of similar water of other water quality and waste water.
Description of drawings
Fig. 1 is the utility model process principle figure
Fig. 2 is that the utility model does not have the electric deionizing device A-A of concentration compartments sectional view
Among the figure: 1. direct supply, 2. do not have concentration compartments's electric deionizing device, 3. water-in (the regenerated liquid relief outlet of holding concurrently) is 4. gone up resin and is held back plate, 5. electrolyte outlet, 5 '. electrolyte outlet, 6. anolyte compartment, 7. cathode compartment, 8. cationic exchange membrane, 8 '. cationic exchange membrane, 9. meshed anode, 10. ion exchange resin, 11. mesh cathode, 12. the electrolytic solution storage tank, 12 '. electrolytic solution storage tank, 13. electrolyte circulating pumps, 13 '. electrolyte circulating pump, 14. the electrolytic solution import, 14 '. 15. times resins of electrolytic solution import are held back plate, 16. water outlets (the regeneration pure water water-in of holding concurrently).
Embodiment
As Fig. 1, shown in 2, the utility model resin on the upper end is is held back plate 4, the lower end is that resin is held back plate 15 down, one side is that anolyte compartment 6 and opposite side are the indoor ion exchange resin 10 of filling of resin that cathode compartment 7 surrounds, anolyte compartment 6 places cationic exchange membrane and meshed anode 9 from the inside to the outside successively, cathode compartment 7 is placed another cationic exchange membrane and mesh cathode 11 from the inside to the outside successively, meshed anode 9 and mesh cathode 11 connect direct supply 1 respectively, in the anolyte compartment 6 with both sides, cathode compartment 7 upper end have electrolyte outlet 5 and 5 ', in the anolyte compartment 6 with both sides, cathode compartment 7 lower end have electrolytic solution import 14 and 14 ', the electrolyte outlet 5 of one side is connected with the electrolytic solution import 14 of homonymy with electrolyte circulating pump 13 through electrolytic solution storage tank 12, the electrolyte outlet 5 ' of opposite side is connected with the electrolytic solution import 14 ' of homonymy with another electrolyte circulating pump 13 ' through another electrolytic solution storage tank 12 ', last resin is held back plate 4 and is tapped into the mouth of a river 3, and following resin is held back plate 15 and picked out the mouth of a river 16.
Described ion exchange resin 10 is Zeo-karb, anionite-exchange resin or mixed uniformly Zeo-karb and anionite-exchange resin.When removing positively charged ion, adopt Zeo-karb; When removing negatively charged ion, adopt anionite-exchange resin; When removing the yin, yang ion simultaneously, the employing ratio is 1: 2 mixed uniformly Zeo-karb and anionite-exchange resin.
Hold back plate and be the plate of holding back that is furnished with 0.2～0.3mm hole, pitch of holes 5-10mm, uniform distribution for described two; Or the plate of holding back that the aperture is 0.15～0.2mm filtering net is housed near ion exchange resin 10 1 sides, and the aperture of holding back plate is 2～3mm, pitch of holes is 10～15mm, uniform distribution.
Described electrolytic solution is the aqueous sulfuric acid of mass percent 0.1-2%.
Take absorption and electricity regeneration alternate operation.With reference to Fig. 1, during absorption, close direct supply 1, electrolyte circulating pump 13 and 13 '.Remove the water or the waste water from top to down of suspended substance through pre-treatment and hold back plate 4 through descending resin to hold back plate 5, ion exchange resin 10 and last resin successively.Ion exchange resin utilizes its exchange interaction, removes the ionic impurity in water or the waste water, thereby water or waste water are purified.During electricity regeneration, open direct supply 1 and two electrolyte circulating pumps 13 and 13 '.Utilize current density to reach 250～500h/m
2Strong direct current promote water power from, produce a large amount of OH
-With H
+Ion; Utilize the OH that is produced again
-Or H
+The ion exchange resin that ion pair lost efficacy is regenerated, and makes it be converted into OH type or H type.Meanwhile, to ion exchange resin 10 logical pure water, the water (flow) direction when it flows to processing is opposite continuously.Like this, just as the adverse current chemical regeneration, the ion that is adsorbed in the ion exchange resin will be constantly from ion exchange resin internal turn current, make ion exchange resin obtain regeneration gradually along the direction of stream of regenerant water; On the other hand, after stream of regenerant water is admitted born again ion, concentration will constantly raise, and finally discharge the resin chamber.
Embodiment:
Concentration is that Cr (VI) waste water that contains of 50mg/L adopts system shown in Figure 1 to handle.Adopt the Nafion cationic exchange membrane, the useful area of every film is 40cm
2Spacing between two films is 10mm; The weakly alkaline anionite-exchange resin of the indoor filling macroporous type of resin, the anion exchange resin layer height is 20cm.Employed electrolytic solution is the aqueous sulfuric acid of mass percent 0.5%.The ion exchange resin that lost efficacy in the absorption back is 375A/m in current density
2, voltage is 84～108V, and the current residence time is the 2h that regenerates under the condition of 2.4min, and the loading capacity of anionite-exchange resin returns to 44% of new resin, and the regeneration concentrated solution of acquisition contains Cr (VI) 550-800mg/L, and cycles of concentration is 11-16.Above-mentioned Cr (VI) waste water that contains of anion exchange process after the electricity consumption regeneration, water outlet Cr (VI) content can be reduced to 0.02-0.46mg/L.
Claims (3)
1. electrodeionization system that does not have the concentration compartments, it is characterized in that: resin is held back plate (4) on the upper end is, the lower end is that resin is held back plate (15) down, one side is that anolyte compartment (6) and opposite side are the indoor ion exchange resin (10) of filling of resin that cathode compartment (7) surrounds, anolyte compartment (6) places cationic exchange membrane (8) and meshed anode (9) from the inside to the outside successively, cathode compartment (7) is placed another cationic exchange membrane (8 ') and mesh cathode (11) from the inside to the outside successively, meshed anode (9) and mesh cathode (11) connect direct supply (1) respectively, (6) have electrolyte outlet (5 with both sides, cathode compartment (7) upper end in the anolyte compartment, 5 '), (6) have electrolytic solution import (14 with cathode compartment (7) both sides, lower end in the anolyte compartment, 14 '), the electrolyte outlet (5) of anolyte compartment's one side is connected with the electrolytic solution import (14) of homonymy with electrolyte circulating pump (13) through electrolytic solution storage tank (12), the electrolyte outlet (5 ') of negative electrode one side is connected with the electrolytic solution import (14 ') of homonymy with another electrolyte circulating pump (13 ') through another electrolytic solution storage tank (12 '), last resin is held back plate (4) and is tapped into the mouth of a river (3), and following resin is held back plate (15) and picked out the mouth of a river (16).
2. a kind of electrodeionization system that does not have the concentration compartments according to claim 1 is characterized in that: described ion exchange resin (10) is Zeo-karb or anionite-exchange resin.
3. a kind of electrodeionization system that does not have the concentration compartments according to claim 1 is characterized in that: hold back plate and be the plate of holding back that is furnished with 0.2～0.3mm hole for described two; Or the plate of holding back that the aperture is 0.15～0.2mm filtering net is housed near ion exchange resin (10) one sides, the aperture of holding back plate is 2～3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206344081U CN201981041U (en) | 2010-11-26 | 2010-11-26 | Condensing chamber-free electrodeionization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206344081U CN201981041U (en) | 2010-11-26 | 2010-11-26 | Condensing chamber-free electrodeionization system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201981041U true CN201981041U (en) | 2011-09-21 |
Family
ID=44608505
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206344081U Expired - Fee Related CN201981041U (en) | 2010-11-26 | 2010-11-26 | Condensing chamber-free electrodeionization system |
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|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103332764A (en) * | 2013-06-08 | 2013-10-02 | 河北工程大学 | Device and method for removing heavy metal ions in water |
-
2010
- 2010-11-26 CN CN2010206344081U patent/CN201981041U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103332764A (en) * | 2013-06-08 | 2013-10-02 | 河北工程大学 | Device and method for removing heavy metal ions in water |
| CN103332764B (en) * | 2013-06-08 | 2015-12-23 | 河北工程大学 | A kind of apparatus and method removing heavy metal ion in water |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110921 Termination date: 20111126 |