CN1140353C - Method and apparatus for regenerating ion exchange resin by bipolar membrane hydrolytic dissociation - Google Patents
Method and apparatus for regenerating ion exchange resin by bipolar membrane hydrolytic dissociation Download PDFInfo
- Publication number
- CN1140353C CN1140353C CNB02124071XA CN02124071A CN1140353C CN 1140353 C CN1140353 C CN 1140353C CN B02124071X A CNB02124071X A CN B02124071XA CN 02124071 A CN02124071 A CN 02124071A CN 1140353 C CN1140353 C CN 1140353C
- Authority
- CN
- China
- Prior art keywords
- chamber
- anion
- cation
- resin
- resin regeneration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000012528 membrane Substances 0.000 title claims abstract description 51
- 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 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000003456 ion exchange resin Substances 0.000 title claims abstract description 26
- 229920003303 ion-exchange polymer Polymers 0.000 title claims abstract description 26
- 230000001172 regenerating effect Effects 0.000 title claims abstract description 21
- 238000010494 dissociation reaction Methods 0.000 title claims abstract description 20
- 230000005593 dissociations Effects 0.000 title claims abstract description 20
- 230000003301 hydrolyzing effect Effects 0.000 title 1
- 230000008929 regeneration Effects 0.000 claims abstract description 99
- 238000011069 regeneration method Methods 0.000 claims abstract description 99
- 239000011347 resin Substances 0.000 claims abstract description 96
- 229920005989 resin Polymers 0.000 claims abstract description 94
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 58
- 150000001450 anions Chemical class 0.000 claims abstract description 53
- 150000001768 cations Chemical class 0.000 claims abstract description 53
- 239000003729 cation exchange resin Substances 0.000 claims abstract description 20
- 239000003957 anion exchange resin Substances 0.000 claims abstract description 17
- 238000005341 cation exchange Methods 0.000 claims abstract description 13
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 12
- 239000003011 anion exchange membrane Substances 0.000 claims abstract description 11
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims abstract description 6
- 229910052938 sodium sulfate Inorganic materials 0.000 claims abstract description 6
- 235000011152 sodium sulphate Nutrition 0.000 claims abstract description 6
- DPGAAOUOSQHIJH-UHFFFAOYSA-N ruthenium titanium Chemical compound [Ti].[Ru] DPGAAOUOSQHIJH-UHFFFAOYSA-N 0.000 claims description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 6
- 229910002804 graphite Inorganic materials 0.000 claims description 6
- 239000010439 graphite Substances 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000008213 purified water Substances 0.000 abstract 2
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 7
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000005349 anion exchange Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 239000008233 hard water Substances 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 239000003014 ion exchange membrane Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000012498 ultrapure water Substances 0.000 description 1
Landscapes
- Water Treatment By Electricity Or Magnetism (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The present invention relates to a method and a device for regenerating ion exchange resin by a bipolar membrane water dissociation method. An electrolytic tank is orderly composed of an anode chamber, at least a group of anion resin regeneration chambers and cation resin regeneration chambers and a cathode chamber, wherein the anion resin regeneration chambers and the cation resin regeneration chambers are separated by a bipolar membrane; the anode chamber and the anion resin regeneration chambers are separated by an anion exchange membrane; the cation resin regeneration chambers and the cathode chamber are separated by a cation exchange membrane; an anode and a cathode are respectively arranged in the anode chamber and the cathode chamber; a direct-current power supply is additionally arranged between the anode and the cathode; cation resin, anion resin and purified water which require regeneration are respectively added into the cation resin regeneration chambers and the anion resin regeneration chambers; sodium sulfate water solution is filled in the cation resin regeneration chambers and the anion resin regeneration chambers; the cation resin regeneration chambers and the anion resin regeneration chambers are maximally connected in series in 200 groups; a concentrated water chamber can be connected between every two groups, and the direct-current power supply is switched on for electrolysis; the purified water is directly dissociated into H <+> and OH <-> to realize the effective regeneration of anion exchange resin and cation exchange resin. The present invention has the advantages of simplified reproduction process and energy saving, and is favorable for environmental protection.
Description
Technical Field
The invention relates to a method and a device for regenerating a spent ion exchange resin.
Technical Field
The ion exchange resin is a main material for preparing high-purity water in the industries of electric power, electronics, pharmacy, chemical engineering and the like. In the ion exchange water treatment process, cation and anion exchange resins are generally adopted, and the exchange reaction is as follows:
r represents a parent framework of the cation exchange resin;
r' represents the parent framework of the anion exchange resin.
After the ion exchange resin fails, it must be regenerated to restore its exchange capacity. The general method is to introduce strong acid (such as hydrochloric acid or sulfuric acid) with certain concentration into cation exchange equipment to regenerate the failed cation resin; the spent anion resin is regenerated by passing a strong base (typically sodium hydroxide) of a certain concentration through an anion exchange unit. The regeneration principle is the reverse reaction of the above formula. The method has the defects that the utilization rate of acid-base regenerated medicaments is low, and about 30-40% of acid-base is wasted; the regeneration operation steps are multiple, and in addition, the discharge of a large amount of waste acid alkali liquor causes pollution to the environment.
Technical content
The invention aims to solve the problems of complex regeneration process of the ion exchange resin, waste of regeneration medicament, high energy consumption and environmental pollution caused by a large amount of acid and alkali liquor.
The invention relates to a method for regenerating ion exchange resin by a bipolar membrane water dissociation method, which is characterized by comprising the following steps:
(a) the electrolytic cell consists of an anode chamber, at least one group of anion and cation resin regeneration chambers and a cathode chamber in sequence, wherein the anion resin regeneration chamber is separated from the cation resin regeneration chamber by a two-stage membrane, the anode chamber is separated from the anion resin regeneration chamber by an anion exchange membrane, the cation resin regeneration chamber is separated from the cathode chamber by a cation exchange membrane, an anode and a cathode are respectively arranged in the anode chamber and the cathode chamber, and a direct current power supply is additionally arranged between the anode and the cathode;
(b) adding the anion exchange resin and the pure water to be regenerated into an anion resin regeneration chamber of the electrolytic cell, and adding the cation exchange resin and the pure water to be regenerated into a cation resin regeneration chamber of the electrolytic cell;
(c) sodium sulfate aqueous solution is filled in the cathode chamber and the anode chamber, and a direct current power supply is switched on for electrolysis;
(d) the pure water in the anion and cation resin regeneration chamber is directly dissociated into H+And OH-，OH-And H+Respectively directly separate from the anions to be regeneratedThe ion exchange resin and the cation exchange resin reactto realize the regeneration of the anion exchange resin and the cation exchange resin.
The concentration of the sodium sulfate aqueous solution is 0.05-1.0 mol/L.
The electrolysis time is 3-5 hours, and the temperature in the electrolysis process is 12-50 ℃.
The device for regenerating ion exchange resin by the bipolar membrane water dissociation method comprises an electrolytic bath and is characterized in that: the electrolytic bath is composed of an anode chamber, at least one group of anion and cation resin regeneration chambers and a cathode chamber in sequence, the anion resin regeneration chamber and the cation resin regeneration chamber are separated by a double-stage membrane, the anode chamber and the anion resin regeneration chamber are separated by an anion exchange membrane, the cation resin regeneration chamber and the cathode chamber are separated by a cation exchange membrane, an anode and a cathode are respectively arranged in the anode chamber and the cathode chamber, and a direct current power supply is additionally arranged between the anode and the cathode.
The anion resin regeneration chamber and the cation resin regeneration chamber in the electrolytic cell are at least one group, the highest 200 groups are arranged in series, a concentrated water chamber can be connected between each group, the concentrated water chamber and the anion resin regeneration chamber are separated by an anion exchange membrane, the cation resin regeneration chamber and the concentrated water chamber are separated by a cation exchange membrane, and the anion resin regeneration chamber and the cation resin regeneration chamber are separated by a bipolar membrane.
The anode is a ruthenium-titanium plate, a ruthenium-titanium net, a ruthenium-titanium porous plate or a graphite plate.
The cathode is a metal plate, a porous iron plate or a conductive graphite plate.
The voltage of the DC power supply is 10-50V, and the current intensity is 1.5-4.4A.
The distance between the anode or the cathode and the adjacent bipolar membrane is 1-9 cm.
The method adopted by the invention is that in a device (short for an electric regeneration device) for regenerating ion exchange resin by a bipolar membrane water dissociation method, ineffective cation exchange resin and pure water, and ineffective anion exchange resin and pure water are respectively arranged in two regeneration chambers, and H generated by water electrolysis is utilized+And OH-Ion controlled regeneration of spent anodesIon exchange resins and anion exchange resins.
The electrochemical principle of the invention is as follows:
and (3) anode reaction: (ii) a Or
And (3) cathode reaction:
when the reaction occurs, under the action of a direct current power supply, the interface of the yin and yang membrane layers in the bipolar membrane is subjected to water dissociation, generation of H+And OH-Ions migrate to the cathode and the anode respectively through the anode membrane layer and the cathode membrane layer on the two sides of the bipolar membrane, H+Cations (e.g. Ca) entering the cation resin regeneration chamber and the spent cation resin2+、Mg2+Etc.) to cause an exchange reaction, thereby regenerating the spent cation exchange resin. At the same time, cations (Ca) exchanged from the spent resin2+、Mg2+Etc.) migrate under the influence of an electric field force to the cathode chamber; OH group-Anions (e.g., Cl) entering the anion resin regeneration chamber and the spent anion exchange resin-、SO4 2-Etc.) to regenerate the spent cation exchange resin, while anions exchanged from the spent resin migrate toward the anode compartment under the influence of an electric field.
Has the advantages that: the invention uses a novel ion exchange membrane, namely a bipolar membrane, to ionize water into H+And OH-Ions, H ionised by water+Regeneration of spent cation exchange resin, OH-Ion regenerating anion exchange resin. The regeneration effect is good, and the working exchange capacity of the anion resin is greatly superior to that of the anion resin on site of a thermal power plant; the cation exchange capacity of the resin is equivalent to that of the field. The electrochemical principle is adopted to provide a method for consuming only electric energy and water, the voltage required by the bipolar membrane is less than 2V, so that the voltage of the whole electrolytic cell is very low, and the energy consumption is lowSmall and effective for regenerating ion exchange resins. The regeneration process of the ion exchange resin is greatly simplified, the regeneration agent and the energy are saved, the discharge of acid and alkali liquor is avoided or reduced, and the environmental protection is facilitated.
Drawings
FIG. 1 is a schematic diagram of basic units of a bipolar membrane water dissociation regeneration ion exchange resin device;
FIG. 2 is a schematic structural diagram of a series arrangement of two groups of anion and cation resin regeneration chambers.
In the figure: 1-anode chamber, 2-anion resin regeneration chamber, 3-cation resin regeneration chamber, 4-cathode chamber, 5-anode, 6-cathode, 7-anion exchange membrane, 8-bipolar membrane, 9-cation exchange membrane, 10-DC power supply, 11-anion exchange resin, 12-cation exchange resin, 13-pure water and 14-concentrated water chamber.
Detailed Description
The invention relates to a method for regenerating ion exchange resin by a bipolar membrane water dissociation method, which comprises the following steps:
(a) the electrolytic cell is composed of an anode chamber 1, at least one group of anion resin regeneration chambers 2, a cation resin regeneration chamber 3 and a cathode chamber 4 in sequence, the anion resin regeneration chambers and the cation resin regeneration chambers are separated by a two-stage membrane 8, the regeneration chambers can be connected in series to 200 groups, a concentrated water chamber 14 can be connected between each group of regeneration chambers, the anode chamber 1 or the concentrated water chamber 14 and the anion resin regeneration chamber 2 are separated by an anion exchange membrane 7, the cation resin regeneration chamber 3 and the cathode chamber 4 or the concentrated water chamber 14 are separated by a cation exchange membrane 9, an anode 5 and a cathode 6 are respectively arranged in the anode chamber 1 and the cathode chamber 2, and a direct current power supply 10 is additionally arranged between the anode and the cathode;
(b) adding anion exchange resin 11 and pure water 13 to be regenerated into an anion resin regeneration chamber 2 of the electrolytic cell, and adding cation exchange resin 12 and pure water 13 to be regenerated into a cation resin regeneration chamber 3 of the electrolytic cell;
(c) and 0.05-1.0 mol/L sodium sulfate aqueous solution is filled in the cathode chamber and the anode chamber, and a direct current power supply is switched on for electrolysis, wherein the electrolysis time is 3-5 hours and the temperature is 12-50 ℃.
(d) The pure water 13 in the anion and cation resin regeneration chamber is directly dissociated into H+And OH-，OH-And H+Respectively and directly react with the anion exchange resin 11 and the cation exchange resin 12 to be regenerated, thereby realizing the regeneration of the anion exchange resin 11 and the cation exchange resin 12.
As shown in figure 1, the basic unit of the ion exchange resin device regenerated by the bipolar membrane water dissociation method comprises an anode chamber 1, an anion resin regeneration chamber 2, a cation resin regeneration chamber 3 and a cathode chamber 4 which sequentially form an electrolytic bath, the anion resin regeneration chamber and the cation resin regeneration chamber are separated by a bipolar membrane 8, the anode chamber and the anion resin regeneration chamber are separated by an anion exchange membrane 7, the cation resin regeneration chamber and the cathode chamber are separated by a cation exchange membrane 9, an anode 5 and a cathode 6 are respectively arranged in the anode chamber and the cathode chamber, a direct current power supply 10 is additionally arranged between the anode and the cathode, the voltage of the direct current power supply is 10-50V, and the current intensity is 1.5-4.4A.
The anode 5 can be selected from ruthenium-titanium plate, ruthenium-titanium net, ruthenium-titanium porous plate or graphite plate. The cathode 6 may be selected from a metal plate, a porous iron plate, or a conductive graphite plate. The distance between the anode or the cathode and the adjacent bipolar membrane 8 is 1-9 cm.
Example two is shown in figure 2: two groups of regeneration chambers are connected in series. The electrolytic cell comprises at least one group of anion resin regeneration chambers 2 and cation resin regeneration chambers 3, the highest 200 groups are arranged in series, a concentrated water chamber 14 is connected between each group, an anode chamber 1 or the concentrated water chamber 14 is separated from the anion resin regeneration chamber 2 by an anion exchange membrane 7, the cation resin regeneration chamber 3 is separated from a cathode chamber 4 or the concentrated water chamber 14 by a cation exchange membrane 9, and the anion resin regeneration chamber is separated from the cation resin regeneration chamber by a bipolar membrane 8.
Experimental examples: in each of the two regeneration chambers, 350ml of each of a spent cation exchange resin (strongly acidic styrene type cation exchange resin 001X 7 type) and an anion exchange resin (strongly basic styrene type anion exchange resin 201X 7 type) was charged, and DC electrolysis was carried out under the following conditions: anode: ruthenium titanium mesh, specification: 150X 2 mm; cathode: iron plate, gauge: 150X 2 mm; electrode-to-film spacing: 1.5 cm; film spacing: 10 mm; temperature: 15-50 ℃; voltage: 40V; current intensity: 1.5-4.4A; energization time: 3.3 h.
After the electrolysis is finished, the regenerated anion-cation exchange resin is taken out for small-scale water treatment experiment by adopting the American society for testing and materials ASTM standard experimental method (anion experimental water is 10mmol/L HCl/H)2SO4An aqueous solution; the cation test water is a hard water solution of 10 mmol/L). The water treatment results show that: the effluent quality of the cation resin exchange column and the anion resin exchange column is qualified, and the working exchange capacity of the cation resin is as follows:645.9 mmol/L.R; the working exchange capacity of the anion resin was: 383.2 mmol/L.R; in the above reaction, the current efficiency was 84.3%.
When other experimental conditions are the same as above, the voltage of the dc power supply is 40V, and the current intensity: 1.5-6.5A, when the electrifying time is 4.5h, the water treatment result shows that: the effluent quality of the cation and anion resin is qualified, and the work exchange capacity of the cation resin is as follows: 924.5 mmol/L.R; the working exchange capacity of the anion resin was: 518.9mmol/L.R, current efficiency 60%.
Claims (10)
1. A method for regenerating ion exchange resin by bipolar membrane water dissociation is characterized in that:
(a) the electrolytic cell consists of an anode chamber, at least one group of anion and cation resin regeneration chambers and a cathode chamber in sequence, wherein the anion resin regeneration chamber is separated from the cation resin regeneration chamber by a two-stage membrane, the anode chamber is separated from the anion resin regeneration chamber by an anion exchange membrane, the cation resin regeneration chamber is separated from the cathode chamber by a cation exchange membrane, an anode and a cathode are respectively arranged in the anode chamber and the cathode chamber, and a direct current power supply is additionally arranged between the anode and the cathode;
(b) adding the anion exchange resin and the pure water to be regenerated into an anion resin regeneration chamber of the electrolytic cell, and adding the cation exchange resin and the pure water to be regenerated into a cation resin regeneration chamber of the electrolytic cell;
(c) sodium sulfate aqueous solution is filled in the cathode chamber and the anode chamber, and a direct current power supply is switched on for electrolysis;
(d) the pure water in the anion and cation resin regeneration chamber is directly dissociated into H+And OH-，OH-And H+Respectively and directly react with the anion exchange resin and the cation exchange resin to be regenerated, thereby realizing the regeneration of the anion exchange resin and the cation exchange resin.
2. The method for regenerating ion exchange resin by bipolar membrane water dissociation of claim 1, characterized in that: the concentration of the sodium sulfate aqueous solution is 0.05-1.0 mol/L.
3. The method for regenerating an ion exchange resin by bipolar membrane water dissociation according to claim 1 or 2, characterized in that: the electrolysis time is 3-5 hours, and the temperature in the electrolysis process is 12-50 ℃.
4. The device for regenerating ion exchange resin by bipolar membrane water dissociation method comprises an electrolytic bath, and is characterized in that: the electrolytic cell is composed of an anode chamber, at least one group of anion and cation resin regeneration chambers and a cathode chamber in sequence, the anion resin regeneration chamber and the cation resin regeneration chamber are separated by a two-stage membrane, the anode chamber and the anion resin regeneration chamber are separated by an anion exchange membrane, the cation resin regeneration chamber and the cathode chamber are separated by a cation exchange membrane, an anode and a cathode are respectively arranged in the anode chamber and the cathode chamber, a direct current power supply is additionally arranged between the anode and the cathode, and the distance between the anode or the cathode and the adjacent bipolar membrane is 1-9 cm.
5. The apparatus for regenerating ion exchange resin by bipolar membrane water dissociation method according to claim 4, wherein: the electrolytic cell comprises at least one group of anion resin regeneration chambers and at least one group of cation resin regeneration chambers, wherein the anion resin regeneration chambers and the cation resin regeneration chambers are arranged at the highest in series for 200 groups, a concentrated water chamber is connected between each group, the concentrated water chamber and the anion resin regeneration chambers are separated by an anion exchange membrane, the cation resin regeneration chambers and the concentrated water chambers are separated by a cation exchange membrane, and the anion resin regeneration chambers and the cation resin regeneration chambers are separated by a bipolar membrane.
6. The apparatus for regenerating ion exchange resin by bipolar membrane water dissociation method according to claim 4 or 5, wherein: the anode is a ruthenium-titanium plate, a ruthenium-titanium mesh or a graphite plate.
7. The apparatus for regenerating ion exchange resin by bipolar membrane water dissociation method according to claim 6, wherein: the ruthenium-titanium plate is a ruthenium-titanium porous plate.
8. The apparatus for regenerating ion exchange resin by bipolar membrane water dissociation method according to claim 4 or 5, wherein: the cathode is a metal plate or a conductive graphite plate.
9. The apparatus for regenerating ion exchange resin by bipolar membrane water dissociation method according to claim 8, wherein: the metal plate is a porous iron plate.
10. The apparatus for regenerating ion exchange resin by bipolar membrane water dissociation method according to claim 4 or 5, wherein: the voltage of the direct current power supply is 10-50V, and the current intensity is 1.5-4.4A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB02124071XA CN1140353C (en) | 2002-06-18 | 2002-06-18 | Method and apparatus for regenerating ion exchange resin by bipolar membrane hydrolytic dissociation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB02124071XA CN1140353C (en) | 2002-06-18 | 2002-06-18 | Method and apparatus for regenerating ion exchange resin by bipolar membrane hydrolytic dissociation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1401432A CN1401432A (en) | 2003-03-12 |
| CN1140353C true CN1140353C (en) | 2004-03-03 |
Family
ID=4745317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB02124071XA Expired - Lifetime CN1140353C (en) | 2002-06-18 | 2002-06-18 | Method and apparatus for regenerating ion exchange resin by bipolar membrane hydrolytic dissociation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1140353C (en) |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100387345C (en) * | 2005-08-03 | 2008-05-14 | 邓佑 | Method an equipment for regenerating ion exchange resin by utilizing polarization effect |
| CN100345615C (en) * | 2005-09-12 | 2007-10-31 | 张贵清 | Electric deionisation method and apparatus for producing superpure water using bipolar membrane |
| CN101450331B (en) * | 2008-12-17 | 2011-07-27 | 牛继星 | Ion exchange resin regeneration technique capable of saving acid and alkali |
| CN102049193B (en) * | 2009-10-30 | 2014-07-30 | 中国石油化工股份有限公司 | Method for carrying out ion exchange on solid matters containing exchangeable ions |
| CN102049195B (en) * | 2009-10-30 | 2014-03-26 | 中国石油化工股份有限公司 | Ion exchange method for solid substance containing exchangeable ions |
| CN102304722A (en) * | 2011-09-20 | 2012-01-04 | 福建师范大学 | Chlorine-free alkali producing method based on three-film four-chamber electrolytic cell |
| CN104888870B (en) * | 2014-03-06 | 2017-04-12 | 苏州华清水处理技术有限公司 | Apparatus for electrically regenerating mixed bed ion exchange resin through bipolar membrane method |
| CN106830214A (en) * | 2017-03-28 | 2017-06-13 | 西安建筑科技大学 | A kind of device and method for processing acidic arsenic-containing solution |
| CN109908979A (en) * | 2017-12-12 | 2019-06-21 | 苏州华清水处理技术有限公司 | A kind of electrically regenerative OH type anion bed failure anion exchange resin method of Bipolar Membrane method |
| CN109908976A (en) * | 2017-12-12 | 2019-06-21 | 苏州华清水处理技术有限公司 | A kind of electrically regenerative H-type cation bed failure cation exchange resin method of Bipolar Membrane method |
| CN113398765A (en) * | 2020-03-16 | 2021-09-17 | 佛山市云米电器科技有限公司 | Regeneration method and separation device for membrane stack |
| CN111233089A (en) * | 2020-03-16 | 2020-06-05 | 佛山市云米电器科技有限公司 | An ion exchange-based water filtration and purification system, method and water purifier |
| CN111229330A (en) * | 2020-03-16 | 2020-06-05 | 佛山市云米电器科技有限公司 | Ion exchange system for liquid stream treatment |
| CN111229331A (en) * | 2020-03-16 | 2020-06-05 | 佛山市云米电器科技有限公司 | Ion exchange system for liquid stream treatment |
| CN113398764A (en) * | 2020-03-16 | 2021-09-17 | 佛山市云米电器科技有限公司 | Membrane stack regeneration method and separation device |
| CN113399004A (en) * | 2020-03-16 | 2021-09-17 | 佛山市云米电器科技有限公司 | Ion exchange system for liquid stream treatment |
| CN113399005A (en) * | 2020-03-16 | 2021-09-17 | 佛山市云米电器科技有限公司 | Ion exchange system for liquid stream treatment |
| CN111233086A (en) * | 2020-03-16 | 2020-06-05 | 佛山市云米电器科技有限公司 | One-way anion exchange type water filtering and purifying system and method and water purifier |
| CN114014415A (en) * | 2021-10-27 | 2022-02-08 | 杨晓刚 | Continuous regeneration deionization cation exchanger and anion exchanger system by using direct-current power supply |
| CN115231666A (en) * | 2022-07-26 | 2022-10-25 | 西安西热水务环保有限公司 | Protection control system and method for continuous electric desalting and electric regeneration |
-
2002
- 2002-06-18 CN CNB02124071XA patent/CN1140353C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CN1401432A (en) | 2003-03-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1140353C (en) | Method and apparatus for regenerating ion exchange resin by bipolar membrane hydrolytic dissociation | |
| CA2528750A1 (en) | Boron separation and recovery | |
| CN105112934B (en) | A kind of preparation method of tetra-alkyl ammonium hydroxide | |
| CN1344229A (en) | water purification method | |
| CN1293231C (en) | Purification of onium hydroxides by electrodialysis | |
| CN119053558A (en) | Operation method of deionized water manufacturing system and deionized water manufacturing system | |
| CN1312400A (en) | Synthesizing of tetramethylammonium | |
| CN1117034C (en) | acid/alkali electrolytic separation device | |
| CN100345615C (en) | Electric deionisation method and apparatus for producing superpure water using bipolar membrane | |
| CN1787971A (en) | Ion-exchange water generating device and method for regenerating ion-exchange resin thereof | |
| CN1523135A (en) | Method for preparing tetramethylammonium hydroxide by electrolysis-electrodialysis | |
| CN104959377A (en) | Electrolytic tank for removing chromium in soil by use of bipolar membrane technology | |
| CN1172028C (en) | Method for preparing hypophosphorous acid by electrolysis | |
| CN1309871C (en) | Electrolyte composition for electrolysis of brine, method for electrolysis of brine, and sodium hydroxide prepared therefrom | |
| CN113265683A (en) | High-efficiency production process of tetrapropylammonium hydroxide and tetrapropylammonium hydroxide aqueous solution prepared by high-efficiency production process | |
| CN113559715A (en) | Bipolar membrane auxiliary ion rectification method for preparing battery-grade lithium product from salt lake brine in one step | |
| JPH08206661A (en) | Method and apparatus for electrochemical recovery of nitrate | |
| CN1554591A (en) | A kind of treatment method of alkaline wastewater | |
| CN104073837A (en) | Method for reducing anions in quaternary ammonium base by virtue of continuous electrolysis | |
| CN212335350U (en) | Device for regenerating noble metal electroplating solution by membrane electrolysis method | |
| CN100335419C (en) | Electric deionisation method and apparatus for producing superpure water using separation bed | |
| CN109095688A (en) | A kind of method of chloride ion in recycling waste water | |
| Koter | Ion-exchange membranes for electrodialysis-A patents review | |
| CN110408936B (en) | Method for electrolyzing acidic etching waste liquid of circuit board | |
| CN1579605A (en) | Electrochemical dissolving method for noble metal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BEIJING GUODIAN LONGYUAN ENVIRONMENTAL PROTECTION Free format text: FORMER OWNER: GUO DIAN TECHNOLOGY ENVIRONMENT PROTECTION GROUP CO., LTD. Effective date: 20090619 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C56 | Change in the name or address of the patentee |
Owner name: GUO DIAN TECHNOLOGY ENVIRONMENT PROTECTION GROUP C Free format text: FORMER NAME: BEIJING GUODIAN LONGYUAN ENVIRONMENTAL PROTECTION ENGINEERING CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: Beijing City, Xuanwu District Baiguang road two, zip code: 100761 Co-patentee after: Electric Power Construction Research Institute of State Grid Corp. Patentee after: GUO DIAN TECHNOLOGY ENVIRONMENT PROTECTION GROUP Co.,Ltd. Address before: Beijing City, Xuanwu District Baiguang road two, zip code: 100761 Co-patentee before: Electric Power Construction Research Institute of State Grid Corp. Patentee before: BEIJING GUODIAN LONGYUAN ENVIRONMENTAL ENGINEERING Co.,Ltd. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20090619 Address after: Beijing City, Xuanwu District Xuanwu street outside No. 28 Futuris building A, No. 1609 zip code: 100052 Co-patentee after: Electric Power Construction Research Institute of State Grid Corp. Patentee after: BEIJING GUODIAN LONGYUAN ENVIRONMENTAL ENGINEERING Co.,Ltd. Address before: Beijing City, Xuanwu District Baiguang road two, zip code: 100761 Co-patentee before: Electric Power Construction Research Institute of State Grid Corp. Patentee before: GUO DIAN TECHNOLOGY ENVIRONMENT PROTECTION GROUP Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20040303 |
|
| CX01 | Expiry of patent term |