CN102079559B - Electrical deionization method and system without enriched chamber - Google Patents
Electrical deionization method and system without enriched chamber Download PDFInfo
- Publication number
- CN102079559B CN102079559B CN 201010566567 CN201010566567A CN102079559B CN 102079559 B CN102079559 B CN 102079559B CN 201010566567 CN201010566567 CN 201010566567 CN 201010566567 A CN201010566567 A CN 201010566567A CN 102079559 B CN102079559 B CN 102079559B
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- resin
- chamber
- exchange resin
- ion exchange
- ion
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000002242 deionisation method Methods 0.000 title abstract 3
- 239000011347 resin Substances 0.000 claims abstract description 38
- 229920005989 resin Polymers 0.000 claims abstract description 38
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000003456 ion exchange resin Substances 0.000 claims abstract description 26
- 229920003303 ion-exchange polymer Polymers 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000012528 membrane Substances 0.000 claims abstract description 16
- 230000008929 regeneration Effects 0.000 claims abstract description 12
- 238000011069 regeneration method Methods 0.000 claims abstract description 12
- 239000003792 electrolyte Substances 0.000 claims description 21
- 239000008151 electrolyte solution Substances 0.000 claims description 21
- 125000002091 cationic group Chemical group 0.000 claims description 13
- 230000008676 import Effects 0.000 claims description 11
- 230000005611 electricity Effects 0.000 claims description 10
- 238000003860 storage Methods 0.000 claims description 8
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 238000009296 electrodeionization Methods 0.000 claims description 5
- 238000011049 filling Methods 0.000 claims description 5
- 238000004064 recycling Methods 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 2
- 150000002500 ions Chemical class 0.000 abstract description 17
- 239000002351 wastewater Substances 0.000 abstract description 13
- 238000000746 purification Methods 0.000 abstract description 6
- 238000001223 reverse osmosis Methods 0.000 abstract description 3
- 238000001728 nano-filtration Methods 0.000 abstract description 2
- 238000005341 cation exchange Methods 0.000 abstract 3
- 239000003010 cation ion exchange membrane Substances 0.000 abstract 1
- 238000009713 electroplating Methods 0.000 abstract 1
- 239000000126 substance Substances 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 238000001914 filtration Methods 0.000 description 3
- 239000012492 regenerant Substances 0.000 description 3
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- PFRGGOIBYLYVKM-UHFFFAOYSA-N 15alpha-hydroxylup-20(29)-en-3-one Natural products CC(=C)C1CCC2(C)CC(O)C3(C)C(CCC4C5(C)CCC(=O)C(C)(C)C5CCC34C)C12 PFRGGOIBYLYVKM-UHFFFAOYSA-N 0.000 description 1
- 229920000557 Nafion® Polymers 0.000 description 1
- SOKRNBGSNZXYIO-UHFFFAOYSA-N Resinone Natural products CC(=C)C1CCC2(C)C(O)CC3(C)C(CCC4C5(C)CCC(=O)C(C)(C)C5CCC34C)C12 SOKRNBGSNZXYIO-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005349 anion exchange Methods 0.000 description 1
- 239000003011 anion exchange membrane Substances 0.000 description 1
- 239000003957 anion exchange resin Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000000909 electrodialysis Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 239000003014 ion exchange membrane Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The invention discloses an electrical deionization method and system without an enriched chamber, wherein a resin chamber is surrounded by a top resin interception plate, a bottom resin interception chamber, an anode chamber and a cathode chamber. One cation exchange membrane and one grid anode are installed in the anode chamber while the other cation exchange membrane and the other grid cathode are located in the cathode chamber. The anode chamber and the cathode chamber are connected to DC power supply respectively. The top resin interception plate is connected to a water inlet while the bottom resin interception plate is connected to a water outlet. Invalid ion exchange resin is electrically regenerated by strong direct current with the density of 250 to 500A/m<2>, meanwhile regenerated ions are discharged from the system by means of water flow continuously flowing in the clearance of the ion exchange resin. The electrical deionization system omits an enriched chamber, and the device of any size needs only a pair of cation exchange membranes, ensures high-speed regeneration and is free from the influence of the distance between the cation ion exchange membranes. The invention is suitable for further purification for output water from nanofiltration and reverse osmosis, electro-plating rinsing waste water containing Cr (VI) and other similar water or waste water.
Description
Technical field
The present invention relates to electric deionizing method and system, especially relate to a kind of electric deionizing method without the concentration compartments and system.
Technical background
The processing of the waste water that contains heavy metal ion that produces in the industry production processes such as the preparation of the required water purification of industry such as electric power, electronics, chemical industry, medicine and plating, process hides, mining, chemical color, printed circuit board (PCB) all will relate to the removal of ion.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 are high, environmental friendliness, therefore has good industrial applications 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 to be used many cationic exchange membranes and anion-exchange membrane simultaneously.Therefore, its system architecture is complicated, and cost of manufacture is high, and I﹠M is inconvenience very.
Summary of the invention
The object of the present invention is to provide a kind of electric deionizing method without the concentration compartments and system, for separating of the ion in water or waste water, particularly Na
+, K
+, Cl
-, HCr0
4 -Contour deliquescent monovalent ion.
The technical solution used in the present invention is:
One, a kind of electric deionizing method without 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 dc electricity promote water power from, produce a large amount of OH
-With H
+Ion; The OH that recycling produces
-Or H
+The ion exchange resin that ion pair lost efficacy is regenerated, and makes it be converted into OH type or H type; In electricity regeneration, the current by continuous flow in the ion exchange resin gap make the ion that is reproduced discharge system.
Two, a kind of electrodeionization system without the concentration compartments:
resin is held back plate on the upper end is, the lower end is that lower resin is held back plate, 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 respectively direct supply, 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 through another electrolytic solution storage tank be connected electrolyte circulating pump and be connected with the electrolytic solution import of homonymy, upper resin is held back plate and is tapped into the mouth of a river, lower resin is held back plate and is 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 near ion exchange resin one side, the plate of holding back that the aperture is 0.15～0.2mm filtering net is housed, the aperture of holding back plate is 2～3mm.
The beneficial effect that the present invention has is:
1) without the 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 impact of ion-exchange membrane spacing in the situation that the conditions such as current density, temperature remain unchanged.
The present invention be applicable to nanofiltration and reverse osmosis water outlet further purification, contain the purification of Cr (VI) electroplate rinsing wastewater and the purification of the similar water of other water quality and waste water.
Description of drawings
Fig. 1 is process principle figure of the present invention
Fig. 2 is that the present invention is without the electric deionizing device A-A of concentration compartments sectional view
in figure: 1. direct supply, 2. without concentration compartments's electric deionizing device, 3. water-in (hold concurrently regenerated liquid relief outlet), 4. go up resin and hold 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. electrolytic solution storage tank, 12 '. the electrolytic solution storage tank, 13. electrolyte circulating pump, 13 '. electrolyte circulating pump, 14. electrolytic solution import, 14 '. 15. times resins of electrolytic solution import are held back plate, 16. water outlet (the regeneration pure water water-in of holding concurrently).
Embodiment
as Fig. 1, shown in Figure 2, the present invention's resin on the upper end is is held back plate 4, the lower end is that lower resin is held back plate 15, 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 respectively direct supply 1, 6 have electrolyte outlet 5 and 5 ' with cathode compartment 7 both sides, upper end in the anolyte compartment, 6 have electrolytic solution import 14 and 14 ' with cathode compartment 7 both sides, lower end in the anolyte compartment, the electrolyte outlet 5 of one side is connected with electrolyte circulating pump through electrolytic solution storage tank 12 and is connected with the electrolytic solution import 14 of homonymy, the electrolyte outlet 5 ' of opposite side through another electrolytic solution storage tank 12 ' be connected electrolyte circulating pump 13 ' and be connected with the electrolytic solution import 14 ' of homonymy, upper resin is held back plate 4 and is tapped into the mouth of a river 3, lower resin is held back plate 15 and is 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, adoption rate 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 for described two, pitch of holes 5-10mm evenly distributes; Or near ion exchange resin 10 1 sides, the plate of holding back that the aperture is 0.15～0.2mm filtering net is housed, and the aperture of holding back plate is 2～3mm, pitch of holes is 10～15mm, evenly distributes.
Described electrolytic solution is the aqueous sulfuric acid of mass percent 0.1-2%.
The present invention takes absorption and electricity regeneration alternate operation.With reference to Fig. 1, during absorption, close direct supply 1, electrolyte circulating pump 13 and 13 '.Through pre-treatment remove the water of suspended substance or waste water from top to down successively through lower resin hold back plate 5, ion exchange resin 10 is held back plate 4 with upper resin.Ion exchange resin utilizes its exchange interaction, removes the ionic impurity in water or 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 250～500A/m
2Strong dc electricity promote water power from, produce a large amount of OH
-With H
+Ion; The OH that recycling produces
-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, continuously to the logical pure water of ion exchange resin 10, the water (flow) direction when it flows to processing is opposite.Like this, just as the adverse current chemical regeneration, the ion that is adsorbed in ion exchange resin will be constantly from ion exchange resin internal turn current, make ion exchange resin obtain gradually regeneration along the direction of stream of regenerant water; On the other hand, after stream of regenerant water is admitted born ion again, 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 process.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.The electrolytic solution that uses is the aqueous sulfuric acid of mass percent 0.5%.The ion exchange resin that lost efficacy after absorption 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 electricity consumption regeneration, water outlet Cr (VI) content can be down to 0.02-0.46mg/L.
Claims (2)
1. electrodeionization system without the concentration compartments, it is characterized in that: resin is held back plate (4) on the upper end is, the lower end is that lower resin is held back plate (15), 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 respectively direct supply (1), (6) have electrolyte outlet (5 with cathode compartment (7) both sides, 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 13 through electrolytic solution storage tank (12) with electrolyte circulating pump) be connected with the electrolytic solution import (14) of homonymy, the electrolyte outlet (5 ') of negative electrode one side through another electrolytic solution storage tank (12 ') be connected electrolyte circulating pump (13 ') and be connected with the electrolytic solution import (14 ') of homonymy, upper resin is held back plate (4) and is tapped into the mouth of a river (3), lower resin is held back plate (15) and is picked out the mouth of a river (16),
The electric deionizing method of above-mentioned electrodeionization system without the concentration compartments is: 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 dc electricity promote water power from, produce a large amount of OH
-With H
+Ion; The OH that recycling produces
-Or H
+The ion exchange resin that ion pair lost efficacy is regenerated, and makes it be converted into OH type or H type; In electricity regeneration, the current by continuous flow in the ion exchange resin gap make the ion that is reproduced discharge system;
Described ion exchange resin (10) is that Zeo-karb, anionite-exchange resin or ratio are 1: 2 mixed uniformly Zeo-karb and anionite-exchange resin.
2. a kind of electrodeionization system without 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010566567 CN102079559B (en) | 2010-11-26 | 2010-11-26 | Electrical deionization method and system without enriched chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010566567 CN102079559B (en) | 2010-11-26 | 2010-11-26 | Electrical deionization method and system without enriched chamber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102079559A CN102079559A (en) | 2011-06-01 |
| CN102079559B true CN102079559B (en) | 2013-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010566567 Active CN102079559B (en) | 2010-11-26 | 2010-11-26 | Electrical deionization method and system without enriched chamber |
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|---|---|
| CN (1) | CN102079559B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102583646B (en) * | 2012-01-19 | 2013-08-07 | 浙江大学 | Membraneless electrodeionization method and system thereof, capable of directly exhausting oxygen gas and hydrogen gas |
| CN107275293B (en) * | 2017-06-27 | 2020-01-14 | 重庆玺筠电子材料有限公司 | Preparation method of low alpha particle metal material |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2611355Y (en) * | 2002-12-05 | 2004-04-14 | 刘沙河 | Two-chamber continuous electrical deionizator |
| CN1769196A (en) * | 2004-11-02 | 2006-05-10 | 浙江欧美环境工程有限公司 | Turning type electric desalinization device |
| CN1787971A (en) * | 2004-02-09 | 2006-06-14 | 日立麦克赛尔株式会社 | Apparatus for forming ion-exchanged water and method for regenerating ion exchange resin therein |
| CN2839253Y (en) * | 2005-07-19 | 2006-11-22 | 浙江欧美环境工程有限公司 | Rolling electric desalting device with variable resin filling ratio |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5015989B2 (en) * | 2009-03-25 | 2012-09-05 | オルガノ株式会社 | Method for producing electric deionized water production apparatus |
-
2010
- 2010-11-26 CN CN 201010566567 patent/CN102079559B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2611355Y (en) * | 2002-12-05 | 2004-04-14 | 刘沙河 | Two-chamber continuous electrical deionizator |
| CN1787971A (en) * | 2004-02-09 | 2006-06-14 | 日立麦克赛尔株式会社 | Apparatus for forming ion-exchanged water and method for regenerating ion exchange resin therein |
| CN1769196A (en) * | 2004-11-02 | 2006-05-10 | 浙江欧美环境工程有限公司 | Turning type electric desalinization device |
| CN2839253Y (en) * | 2005-07-19 | 2006-11-22 | 浙江欧美环境工程有限公司 | Rolling electric desalting device with variable resin filling ratio |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2010-227730A 2010.10.14 |
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| Publication number | Publication date |
|---|---|
| CN102079559A (en) | 2011-06-01 |
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Effective date of registration: 20170511 Address after: Hangzhou City, Zhejiang province Binjiang District 310052 shore road 1180 1 Building No. 1 Building 1 room 101 Patentee after: Zhejiang focus environmental protection technology Co., Ltd. Address before: 310027 Hangzhou, Zhejiang Province, Xihu District, Zhejiang Road, No. 38, No. Patentee before: Zhejiang University |