CN115976578A - Cathode film packed bed electrode reactor for wet recovery of metal and recovery method thereof - Google Patents
Cathode film packed bed electrode reactor for wet recovery of metal and recovery method thereof Download PDFInfo
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- CN115976578A CN115976578A CN202211664415.XA CN202211664415A CN115976578A CN 115976578 A CN115976578 A CN 115976578A CN 202211664415 A CN202211664415 A CN 202211664415A CN 115976578 A CN115976578 A CN 115976578A
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 40
- 239000002184 metal Substances 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000011084 recovery Methods 0.000 title claims abstract description 29
- 238000006243 chemical reaction Methods 0.000 claims abstract description 61
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 45
- 239000007791 liquid phase Substances 0.000 claims abstract description 39
- 239000002245 particle Substances 0.000 claims abstract description 31
- 239000003011 anion exchange membrane Substances 0.000 claims abstract description 16
- 229910021645 metal ion Inorganic materials 0.000 claims abstract description 15
- 238000004070 electrodeposition Methods 0.000 claims abstract description 7
- 230000002336 repolarization Effects 0.000 claims abstract 2
- 239000010936 titanium Substances 0.000 claims description 19
- 150000002739 metals Chemical class 0.000 claims description 17
- 239000000243 solution Substances 0.000 claims description 16
- 239000000126 substance Substances 0.000 claims description 10
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 9
- 229910052719 titanium Inorganic materials 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- 230000009467 reduction Effects 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 239000012528 membrane Substances 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 230000005684 electric field Effects 0.000 claims description 5
- 125000004122 cyclic group Chemical group 0.000 claims description 4
- 238000000151 deposition Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 239000005995 Aluminium silicate Substances 0.000 claims description 3
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 3
- 235000012211 aluminium silicate Nutrition 0.000 claims description 3
- 150000001450 anions Chemical class 0.000 claims description 3
- 229960000892 attapulgite Drugs 0.000 claims description 3
- 239000000440 bentonite Substances 0.000 claims description 3
- 229910000278 bentonite Inorganic materials 0.000 claims description 3
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 3
- -1 hydroxyl ions Chemical class 0.000 claims description 3
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052625 palygorskite Inorganic materials 0.000 claims description 3
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 3
- 235000011152 sodium sulphate Nutrition 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 2
- 150000001768 cations Chemical class 0.000 claims description 2
- 239000008151 electrolyte solution Substances 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 claims description 2
- 238000007254 oxidation reaction Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 description 3
- 229910000365 copper sulfate Inorganic materials 0.000 description 3
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 3
- 238000005272 metallurgy Methods 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000012266 salt solution Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 230000003313 weakening effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000010793 electronic waste Substances 0.000 description 1
- 238000005363 electrowinning Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000009854 hydrometallurgy Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000009853 pyrometallurgy Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
- 229910000368 zinc sulfate Inorganic materials 0.000 description 1
- 229960001763 zinc sulfate Drugs 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention discloses a cathode film packed bed electrode reactor for recovering metal by a wet method and a recovery method thereof, wherein the cathode film packed bed electrode reactor comprises a cathode region and an anode region, and the anode region and the cathode region respectively comprise a liquid phase inlet, a water distribution region, a water distribution plate, a reaction chamber and a liquid phase outlet which are sequentially arranged from bottom to top; the liquid phase inlet is arranged on the outer wall of the side surface of the water distribution area, a water distribution plate is arranged between the water distribution area and the reaction chamber, and the outer wall of the side surface of the reaction chamber is provided with a liquid phase outlet; the cathode water distribution area is not communicated with the anode water distribution area, and the cathode reaction chamber is separated from the anode reaction chamber through an anion exchange membrane; the inside of the anode reaction chamber is filled with a particle electrode, the inner wall of the side surface of the anode reaction chamber is provided with an anode, and the inner wall of the side surface of the cathode reaction chamber is provided with a cathode. The method can deposit metal ions on the repolarization particle electrode in the anode area, realizes the non-stop recovery of metal, omits the product stripping procedure of the conventional electrodeposition process, has high efficiency and low consumption in the reaction process, and keeps the recovery efficiency in the reaction process to be high and stable and can reach more than 80 percent.
Description
Technical Field
The invention relates to the technical field of electrochemical recovery of secondary resources, in particular to a cathode film packed bed electrode reactor for recovering metals by a wet method and a recovery method thereof.
Background
The electronic waste is rich in various valuable metal components as a secondary resource, and the effective recycling of the metal components has great economic value and immeasurable environmental benefit. Compared with pyrometallurgy and other hydrometallurgy technologies, the electrowinning process is highly appreciated by various researchers in the world due to its advantages of mild reaction conditions, simple operation, no secondary pollution, etc. Although the theory and practice covered in this field has been developed to a high level, efficient, low-cost, short-run separation and purification of metals has not been achieved.
The current packed bed electrode reactor adopting high contact resistance filler greatly increases the electrode area and simultaneously reduces the operating current density, and the electrodeposition can be efficiently carried out under the reaction control step, so that the configuration reactor overcomes the defects of the traditional electrolysis equipment, is suitable for large-current operation, and has advantages when low-concentration metal ions are recovered from a liquid phase; however, the reactor is still difficult to operate continuously due to the existence of the product stripping section, and no feasible solution exists for the phenomenon that the working current of the reactor is reduced along with the reduction of the concentration of the metal ions in the flow direction, and the productivity removing phenomenon is caused by the reduction of the working current of the reactor.
Disclosure of Invention
Aiming at the technical defects, the invention aims to provide a cathode film packed bed electrode reactor for recovering metals by a wet method and a recovery method thereof, the method can deposit metal ions on a repolarized particle electrode in an anode region, realizes the non-stop recovery of the metals, omits the product stripping process of the conventional electrodeposition process, has high efficiency and low consumption in the reaction process, keeps the recovery efficiency in the reaction process to be high and stable and can reach more than 80 percent, and provides a new secondary resource recovery idea for the electrochemical wet engineering practice of mining and metallurgy waste residues, metal mine wastewater and the like.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention aims to provide a cathode film packed bed electrode reactor for recovering metals by a wet method, which comprises a cathode area and an anode area, wherein the anode area and the cathode area respectively comprise a liquid phase inlet, a water distribution area, a water distribution plate, a reaction chamber and a liquid phase outlet which are sequentially arranged from bottom to top;
wherein, the liquid phase inlet is arranged on the outer wall of the side surface of the water distribution area, a water distribution plate is arranged between the water distribution area and the reaction chamber, and the outer wall of the side surface of the reaction chamber is provided with a liquid phase outlet; the cathode water distribution area is not communicated with the anode water distribution area, and the cathode reaction chamber is separated from the anode reaction chamber through an anion exchange membrane;
the anode reaction chamber is internally filled with a repolarized particle electrode, the inner wall of the side surface of the anode reaction chamber is provided with an anode, and the anode is a titanium-based composite coating DSA electrode;
the cathode is arranged on the inner wall of the side face of the cathode reaction chamber, and the cathode is a metal plate of any one of a titanium plate, a copper plate or a stainless steel plate.
Further, the particle electrode comprises activated carbon, attapulgite, kaolin and bentonite, and the particle size is 1-10 mm.
Furthermore, the DSA electrode with the titanium-based composite coating is prepared by adopting a brush coating thermal oxidation method or an electrodeposition method, and comprises IrO 2 -Ta 2 O 5 /Ti、IrO 2 -RuO 2 /Ti、PbO 2 /Ti and SnO 2- Sb 2 O 3 /Ti。
Another object of the present invention is to provide a method for recovering a cathode membrane packed bed electrode reactor for wet recovery of metals, comprising the steps of:
s1: in the anode region, the anolyte enters the anode water distribution region from the anode liquid phase inlet, is uniformly distributed by the water distribution plate and enters the anode reaction chamber as a main reaction solution, and finally flows out of the anode liquid phase outlet and enters the reaction chamber from the liquid phase inlet for cyclic utilization; the metal ions are reduced and converted on the particle electrode in the anode reaction zone;
s2: in the cathode region, cathode liquid enters a cathode water distribution region from a cathode liquid phase inlet, is uniformly distributed by a water distribution plate, enters a cathode reaction chamber as electrolyte solution, finally flows out from a cathode liquid phase outlet and enters the reaction chamber from the liquid phase inlet for cyclic utilization;
s3: the step S1 and the step S2 are performed simultaneously, the metal ions are reduced to a simple metal substance by using the cathode portion of the repolarized particle electrode as a working electrode, and hydroxyl ions and sulfate ions transfer electrons between the anode region and the cathode region through the anion exchange membrane.
Further, in step S1, the anolyte is a solution containing metal ions, and includes a copper sulfate solution and a zinc sulfate solution.
Further, in step S2, the catholyte is a high-concentration, inert salt solution, including a sodium sulfate solution with a mass concentration of 0.5% to 10%.
Further, in step S3, the anion exchange membrane is a G1204-05 homogeneous anion exchange membrane, and under the action of an external direct current electric field, anions in the solution can selectively pass through and block cations.
The invention has the beneficial effects that:
according to the cathode film packed bed electrode reactor for recovering metals by the wet method, an external electric field is applied to provide electrons after the reactor is electrified, the electrons in the cathode region are subjected to hydrogen evolution reaction, the particles in the anode region are repolarized into particle electrodes, metal ions on the particle electrodes are reduced into metal simple substances by taking the cathode part of the repolarized particle electrodes as a working electrode, and the apparent current weakening effect caused by the reduction of the concentration of the metal ions in the anode liquid can be counteracted by circulating high-concentration and inert salt solution, so that the high efficiency and low consumption of the electric reduction are guaranteed; hydroxyl ions and sulfate ions transfer electrons between the anode region and the cathode region through an anion exchange membrane, and the anion exchange membrane prevents metal simple substances from depositing on the cathode, and the metal simple substances deposit on the particle electrode;
compared with the traditional method, the method can deposit metal ions on the repolarized particle electrode in the anode area, realizes the non-stop recovery of metal, omits the product stripping process of the conventional electrodeposition process, keeps the recovery efficiency in the reaction process to be high-efficiency and stable and can reach more than 80 percent, and provides a new secondary resource recovery idea for the electrochemical wet engineering practice of mining and metallurgy waste residues, metal mine wastewater and the like.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a cathode membrane packed bed electrode reactor apparatus for wet recovery of metals according to example 1 of the present invention;
FIG. 2 is a graph showing the relationship between the recovery rate of metal and the reaction time in a cathode membrane packed bed electrode reactor provided in example 1 of the present invention;
description of reference numerals:
1. an anode liquid phase inlet; 2. a cathode liquid phase inlet; 3. an anode water distribution area; 4. a cathode water distribution area; 5. a water distribution plate; 6. an anode reaction chamber; 7. a cathode reaction chamber; 8. an anode liquid phase outlet; 9. a cathode liquid phase outlet; 10. an anion exchange membrane; 11. a particle electrode; 12. an anode; 13. a cathode; 14. an anode region; 15. a cathode region.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and all other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the protection scope of the present invention.
Example 1
A cathodic packed bed electrode reactor apparatus for wet recovery of metals, as shown in figure 1, comprises two sections, an anode section 14 and a cathode section 15.
The anode region 14 comprises an anode liquid phase inlet 1, an anode water distribution region 3, a water distribution plate 5, an anode reaction chamber 6, an anode liquid phase outlet 8, a particle electrode 11 and an anode 12; wherein, the anode liquid phase inlet 1 and the anode liquid phase outlet 8 are respectively arranged on the outer wall of the side surface of the anode region 14 close to the bottom and the top, a water distribution plate 5 is arranged between the anode water distribution region 3 and the anode reaction chamber 6, the anode water distribution region 3 is positioned below the anode reaction chamber 6, the inside of the anode reaction chamber 6 is filled with a particle electrode 11, and the inner wall of the side surface is provided with an anode 12.
The cathode region 15 comprises a cathode liquid phase inlet 2, a cathode water distribution region 4, a water distribution plate 5, a cathode reaction chamber 7, a cathode liquid phase outlet 9 and a cathode 13; wherein, the cathode liquid phase inlet 2 and the cathode liquid phase outlet 9 are respectively arranged on the outer wall of the side surface of the cathode area 15 close to the bottom and the top, a water distribution plate 5 is arranged between the cathode water distribution area 4 and the cathode reaction chamber 7, the cathode water distribution area 4 is positioned below the cathode reaction chamber 7, and the inner wall of the side surface is provided with a cathode 13.
The anode water distribution area 3 is not connected with the cathode water distribution area 4, the anode reaction chamber 6 is connected with the cathode reaction chamber 7 through an anion exchange membrane 10, and the anion exchange membrane is a G1204-05 homogeneous anion exchange membrane.
The particle electrode 11 is made of activated carbon, attapulgite, kaolin, bentonite, etc., and has a particle diameter of 1mm to 10mm, and the particle electrode 11 is made of activated carbon in this embodiment.
The anode 12 is a DSA electrode for preparing a titanium (Ti) -based composite coating.
The cathode is a metal plate such as a titanium plate, a copper plate or a stainless steel plate. The cathode 13 of this embodiment is a Ti plate.
The anolyte is a copper sulfate solution.
The method for recovering metal ions by the device comprises the following steps:
in the anode region 14, copper sulfate solution enters the anode region 14 from the anode liquid phase inlet 1 from bottom to top, enters the anode reaction chamber 6 through the anode water distribution region 3, and then flows out through the anode liquid phase outlet 8, and the anode liquid is in contact with an anode 12 on the inner wall of the side surface of the anode reaction chamber 6 and a particle electrode 11 filled in the reaction chamber. After the power is switched on, an electric field is applied to provide electrons, the electrons in the cathode region are subjected to hydrogen evolution reaction, the particles in the anode region are repolarized to form particle electrodes, and Cu 2+ In the anode reaction chamber 6, the copper is reduced to the simple substance on the repolarizing particle electrode 11 through electrochemical reaction, and the simple substance is prevented from depositing on the cathode through an anion membrane and depositing on the particle electrode.
The cathode region 15 circularly flows high-concentration inert salt solution (such as sodium sulfate solution with mass concentration of 0.5-10%) to offset the weakening effect of apparent current caused by the reduction of the metal ion concentration of the anolyte, thereby ensuring the high efficiency and low consumption of the electric reduction.
The anode region reacts essentially as follows:
M 2+ +2e - ＝M
2H 2 O-4e - ＝4H + +O 2 ↑
the cathode region basically reacts as follows:
4H 2 O+4e - ＝2H 2 ↑+4OH -
if the technology is used for recovering metal components in secondary resources, corresponding target metal simple substances can be obtained in the anode region 14, the non-stop recovery of metals is realized, the product stripping procedure of the conventional electrodeposition process is omitted, and a new secondary resource recovery idea is provided for the electrochemical wet engineering practice of mining and metallurgy waste residues, metal mine wastewater and the like. As shown in the figure 2 of the relationship graph between the recovery rate of copper in the cathode film packed bed electrode reactor and the reaction time, the recovery efficiency in the reaction process is kept high-efficient and stable and can reach more than 80 percent.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (7)
1. The cathode film packed bed electrode reactor for recovering metals by a wet method is characterized by comprising a cathode region (15) and an anode region (14), wherein the anode region (14) and the cathode region (15) respectively comprise a liquid phase inlet, a water distribution region, a water distribution plate (5), a reaction chamber and a liquid phase outlet which are sequentially arranged from bottom to top;
wherein, the liquid phase inlet is arranged on the outer wall of the side surface of the water distribution area, a water distribution plate (5) is arranged between the water distribution area and the reaction chamber, and the outer wall of the side surface of the reaction chamber is provided with a liquid phase outlet; the cathode water distribution area (4) is not communicated with the anode water distribution area (3), and the cathode reaction chamber (7) is separated from the anode reaction chamber (6) through an anion exchange membrane (10);
the particle electrode (11) is filled in the anode reaction chamber (6), the anode (12) is arranged on the inner wall of the side surface, and the anode (2) is a titanium-based composite coating DSA electrode;
the cathode (13) is arranged on the inner wall of the side face of the cathode reaction chamber (7), and the cathode (13) is any one metal plate of a titanium plate, a copper plate or a stainless steel plate.
2. The negative membrane-packed bed electrode reactor for wet recovery of metals as claimed in claim 1, wherein the particle electrode (11) comprises activated carbon, attapulgite, kaolin, bentonite, and has a particle size of 1mm to 10mm.
3. The negative packed bed electrode reactor for wet recovery of metals of claim 1, wherein the titanium-based composite coated DSA electrode is prepared by brush-coating thermal oxidation or electrodeposition, and the titanium-based composite coated DSA electrode comprises IrO 2 -Ta 2 O 5 /Ti、IrO 2 -RuO 2 /Ti、PbO 2 /Ti and SnO 2- Sb 2 O 3 /Ti。
4. A method of recovering a cathode membrane packed bed electrode reactor for wet recovery of metals as claimed in claim 1, comprising the steps of:
s1: in the anode region (14), anolyte enters an anode water distribution region (3) from an anode liquid phase inlet (1), is uniformly distributed by a water distribution plate (5) and enters an anode reaction chamber (6) as a main reaction solution, and finally flows out from an anode liquid phase outlet (8) and enters the reaction chamber from a liquid phase inlet again for cyclic utilization; the metal ions are subjected to reduction conversion on a particle electrode (11) in the anode reaction zone;
s2: in the cathode region (15), cathode liquid enters the cathode water distribution region (4) from the cathode liquid phase inlet (2), is uniformly distributed by the water distribution plate (5) and enters the cathode reaction chamber (7) as electrolyte solution, and finally flows out from the cathode liquid phase outlet (9) and enters the reaction chamber from the liquid phase inlet again for cyclic utilization;
s3: the step S1 and the step S2 are carried out simultaneously, an electric field is applied to provide electrons after electrification, the metal ions are reduced into metal simple substances by taking the cathode part of the repolarization particle electrode (11) as a working electrode, hydroxyl ions and sulfate ions transmit the electrons between the anode area (14) and the cathode area (15) through the anion exchange membrane (10), the anion exchange membrane (10) is used for preventing the metal simple substances from depositing on the cathode, and the metal simple substances are deposited on the particle electrode.
5. The cathode packed bed electrode reactor for wet recovery of metals as claimed in claim 1, wherein the anolyte is a solution containing metal ions in step S1.
6. The cathode membrane packed bed electrode reactor for wet recovery of metals as claimed in claim 1, wherein the catholyte is a sodium sulfate solution with a mass concentration of 0.5-10% in step S2.
7. The cathode packed bed electrode reactor for wet recovery of metals as claimed in claim 4, wherein in step S3, the anion exchange membrane is a homogeneous anion exchange membrane, and under the action of the applied DC electric field, the anion in the solution can selectively pass through and block the cation.
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| CN111762852A (en) * | 2020-08-03 | 2020-10-13 | 苏州聚智同创环保科技有限公司 | Electrocatalytic oxidation reactor for treating high-hardness high-organic matter high-salt wastewater |
| CN212609709U (en) * | 2020-08-03 | 2021-02-26 | 苏州聚智同创环保科技有限公司 | Electrocatalytic oxidation reactor for treating high-hardness high-organic matter high-salt wastewater |
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