CN116443995A - Method and device for electrochemically degrading trace heavy metal ions in polluted water by using working medium filled type ionic membrane three-dimensional electrode - Google Patents
Method and device for electrochemically degrading trace heavy metal ions in polluted water by using working medium filled type ionic membrane three-dimensional electrode Download PDFInfo
- Publication number
- CN116443995A CN116443995A CN202310527019.0A CN202310527019A CN116443995A CN 116443995 A CN116443995 A CN 116443995A CN 202310527019 A CN202310527019 A CN 202310527019A CN 116443995 A CN116443995 A CN 116443995A
- Authority
- CN
- China
- Prior art keywords
- anode
- cathode
- heavy metal
- metal ions
- working medium
- 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.)
- Pending
Links
- 150000002500 ions Chemical class 0.000 title claims abstract description 130
- 239000012528 membrane Substances 0.000 title claims abstract description 107
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 93
- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims abstract description 41
- 230000000593 degrading effect Effects 0.000 title claims abstract description 23
- 239000000945 filler Substances 0.000 claims abstract description 37
- 239000000126 substance Substances 0.000 claims abstract description 18
- 238000001556 precipitation Methods 0.000 claims abstract description 17
- 150000001768 cations Chemical class 0.000 claims abstract description 16
- 150000001450 anions Chemical class 0.000 claims abstract description 12
- 239000003014 ion exchange membrane Substances 0.000 claims abstract description 12
- 230000005611 electricity Effects 0.000 claims abstract description 10
- 239000002244 precipitate Substances 0.000 claims abstract description 8
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 7
- 231100000331 toxic Toxicity 0.000 claims description 11
- 230000002588 toxic effect Effects 0.000 claims description 11
- 239000003011 anion exchange membrane Substances 0.000 claims description 7
- 238000005341 cation exchange Methods 0.000 claims description 7
- 230000015556 catabolic process Effects 0.000 claims description 6
- 238000006731 degradation reaction Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000006479 redox reaction Methods 0.000 claims description 3
- 230000033116 oxidation-reduction process Effects 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 6
- 239000013589 supplement Substances 0.000 abstract description 2
- 238000001179 sorption measurement Methods 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 239000011734 sodium Substances 0.000 description 4
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000909 electrodialysis Methods 0.000 description 3
- 239000008213 purified water Substances 0.000 description 3
- 238000001223 reverse osmosis Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 235000010265 sodium sulphite Nutrition 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 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 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003456 ion exchange resin Substances 0.000 description 1
- 229920003303 ion-exchange polymer Polymers 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46109—Electrodes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/463—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrocoagulation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/46—Apparatus for electrochemical processes
- C02F2201/461—Electrolysis apparatus
- C02F2201/46105—Details relating to the electrolytic devices
- C02F2201/46115—Electrolytic cell with membranes or diaphragms
Abstract
The invention designs a method and a device for electrochemically degrading trace heavy metal ions in polluted water by using a three-dimensional electrode of a working medium filled type ion membrane, and creatively provides an integral electrode design thought of the three-dimensional electrode of the working medium filled type ion membrane, wherein a positive ion exchange membrane is arranged in a negative ion membrane plate in an electrolysis device, and a negative ion exchange membrane is arranged in the positive ion membrane plate; the cathode filler adopts a substance capable of generating precipitation with heavy metal ions, and the anode filler adopts a substance capable of generating precipitation with heavy metal ions simultaneously with reducibility; the cathode region is electrified with negative electricity, and the anode region is electrified with positive electricity; thus, anions containing high-valence heavy metals are pulled in by the anode region and reduced into heavy metal cations by the reducing substances, and meanwhile, the heavy metal cations are further reacted to generate precipitates to be removed; the cathode region pulls in heavy metal cations to react with the cathode filler to generate precipitate and remove the precipitate; the invention has no concentrated water generation and is a supplement to the treatment method of trace heavy metal ions.
Description
Technical Field
The invention belongs to the technical field of wastewater treatment, in particular to an ionic membrane three-dimensional electrode electrochemical water treatment technology, and particularly relates to a method and a device for electrochemically degrading trace heavy metal ions in polluted water by using a working medium filled ionic membrane three-dimensional electrode.
Background
In the current water treatment technical field, for the treatment modes of toxic and harmful anions and cations in water, the method for deeply treating the residual trace ions is usually as follows: adsorption methods such as activated carbon adsorption method, diatomite, clay, bentonite and the like, resin adsorption method and ion exchange resin adsorption regeneration method; in addition, reverse osmosis technology and electrodialysis technology are also known. At present, in order to thoroughly degrade harmful ions in water and simultaneously realize a better technology for long-term use of equipment, a reverse osmosis technology and an electrodialysis technology are basically adopted. However, they each have their different drawbacks: the adsorption method brings the trouble of the subsequent solid garbage or regeneration process; both reverse osmosis and electrodialysis techniques have concentrated water that needs to be treated again. In order to overcome the defects, it is necessary to research a novel advanced wastewater treatment technology without generating concentrated water and without generating a large amount of solid garbage. Therefore, the invention designs a method and a device for electrochemically degrading trace heavy metal ions in polluted water by using a working medium filled type ionic membrane three-dimensional electrode aiming at the treatment technology of trace heavy metal ions in the polluted water, which are used for solving the problems.
Disclosure of Invention
Aiming at the defects of the prior art of water pollution treatment, the invention designs a novel process for electrochemical water treatment of a three-dimensional electrode of an ionic membrane filled with a working medium, which comprises the following steps: a method and a device for electrochemically degrading trace heavy metal ions in polluted water by using a working medium filled type ionic membrane three-dimensional electrode. The method can deeply degrade toxic and harmful trace heavy metal ions in the polluted water, does not generate concentrated water or a large amount of solid garbage, has high production efficiency, and accords with the new trend of environmental protection development. The invention is realized by adopting the following technical scheme:
a device for electrochemically degrading trace heavy metal ions in polluted water by using a working medium filled type ionic membrane three-dimensional electrode comprises three parts: first, "cathode portion (cathode zone)", second, "contaminated water treatment zone", third, "anode portion (anode zone)". The method is characterized in that:
the first term "cathode portion (cathode region)", which is a cathode whole, is composed of a cathode plate, a cathode filler (cathode working medium), a cathode ion membrane plate, and a cathode lead; the cathode part is separated from the polluted water treatment area and the anode area by a cathode ion membrane plate (shown in figure 1); meanwhile, the cathode part (cathode region) can be made into a standardized three-dimensional electrode, the shell of the electrode is a cathode ion membrane plate, and the three-dimensional cathode is separated from the polluted water treatment area and the anode area by the cathode ion membrane plate (as shown in figure 2).
Said second "contaminated water treatment zone" is intended to be passed with contaminated water to be treated.
The anode part (anode zone) of the device is an anode whole, and the anode part consists of an anode plate, an anode filling material (anode working medium), an anode ion membrane plate and an anode wire; the anode part is separated from the polluted water treatment area and the cathode area by an anode ion membrane plate (shown in figure 1); meanwhile, the anode part (anode region) can be made into a standardized three-dimensional electrode, the shell of the electrode is an anode ion membrane plate, and the three-dimensional anode is separated from the polluted water treatment region and the cathode region by the anode ion membrane plate (as shown in figure 2).
Further:
according to the "cathode ion membrane plate", "anode ion membrane plate" described above, it is characterized in that: the cathode ion membrane plate and the anode ion membrane plate are composed of ion exchange membranes and supporting screen plates, the polarities of the ion exchange membranes in the membrane plates are set according to different polarities for treating different polluted water, and when the toxic and harmful trace heavy metal ions are treated, in one set of electrolysis device, the ion exchange membranes in the cathode ion membrane plate and the anode ion membrane plate are as follows: "cathode" VS "anode" = "cation exchange membrane VS anion exchange membrane", i.e.: "+vs-", that is, "cathode ion membrane plate" in which the cation exchange membrane is disposed and "anode ion membrane plate" in which the anion exchange membrane is disposed.
Further:
according to the "cathode filler (cathode working medium)", "anode filler (anode working medium)", as described above, characterized in that: the cathode filler (cathode working medium) and the anode filler (anode working medium) are filled according to the property of the polluted water to be treated (trace heavy metal ions in the polluted water), the cathode filler adopts substances which can generate precipitation with the heavy metal ions, and the anode filler adopts substances which can generate precipitation with the heavy metal ions simultaneously with the reducibility.
Further:
the "cathode plate", "anode plate" as described above is characterized by: the 'cathode polar plate' and the 'anode polar plate' are both made of graphite blocks.
The invention also discloses a method for electrochemically degrading trace heavy metal ions in the polluted water by using the working medium filled type ionic membrane three-dimensional electrode, which is characterized by comprising the following steps of: the device comprises: the water treatment method of the device for electrochemically degrading trace heavy metal ions in polluted water by using the working medium filled type ionic membrane three-dimensional electrode is as follows: an ion exchange membrane is used for isolating and allowing anions and cations to pass through, and toxic and harmful trace heavy metal ions are degraded by a chemical oxidation-reduction method and a precipitation method by combining the functions of a cathode filler (cathode working medium) and an anode filler (anode working medium).
The method for electrochemically degrading trace heavy metal ions in polluted water by using the working medium filled type ionic membrane three-dimensional electrode is characterized by comprising the following steps of:
when the method is used for treating trace heavy metal ions, a cation exchange membrane is arranged in a cathode ion membrane plate in a device for electrochemically degrading trace heavy metal ions in polluted water by using a working medium filled type ion membrane three-dimensional electrode, and an anion exchange membrane is arranged in an anode ion membrane plate; the cathode filler adopts a substance capable of generating precipitation with heavy metal ions, and the anode filler adopts a substance capable of generating precipitation with heavy metal ions simultaneously with reducibility; the power supply mode is that the cathode supplies negative electricity and the anode supplies positive electricity.
Further, the method for electrochemically degrading trace heavy metal ions in polluted water by using the working medium filled type ionic membrane three-dimensional electrode is characterized by being used for treating trace heavy metal ions, such as: high valence heavy metal anions: crO (CrO) 4 2- 、MoO 4 2- …, and heavy metal cations: cr (Cr) 3+ 、Mn 2+ … when in electrolysis, the anode is electrified positively, and high-valence heavy metal anions can be obtained: crO (CrO) 4 2- 、MoO 4 2- … is pulled into the ionic membrane three-dimensional electrode to generate oxidation-reduction reaction with the filling medium, and simultaneously, precipitation is produced; the cathode is negatively charged, so that heavy metal cations: cr (Cr) 3+ 、Mn 2+ … enters the ion membrane three-dimensional electrode to be subjected to chemical reaction with the filling medium to produce precipitate and be removed; the specific reaction is as follows:
and (3) a negative electrode:
toxic trace heavy metal ions such as: m is M n+ +XY n- →M n (XY) n
(the polluted component in the ion membrane electrode reacts with the filling medium and is degraded)
And (3) a positive electrode:
(1)MO N 2- →M n+ +(n+2)e，(2)M n+ +XY n- →M n (XY) n
the beneficial effects of the invention are that
The invention has the beneficial effects that: the invention relates to a method and a device for electrochemically degrading trace heavy metal ions in polluted water by a working medium filled type ionic membrane three-dimensional electrode designed according to a treatment technology of toxic and harmful trace heavy metal ions in polluted water
1. The invention innovatively proposes: an integral electrode design scheme of a working medium filling type ion membrane three-dimensional electrode.
2. Aiming at the treatment of toxic and harmful trace heavy metal ions in polluted water, a set of electrolysis device is innovatively provided with a positive ion exchange membrane by a negative ion membrane plate and an negative ion exchange membrane by an positive ion membrane plate; the cathode filler adopts a substance capable of generating precipitation with heavy metal ions, and the anode filler adopts a substance capable of generating precipitation with heavy metal ions simultaneously with reducibility; the power supply mode is that the cathode supplies negative electricity and the anode supplies positive electricity. .
3. When the invention is used for treating trace heavy metal ions, high-valence heavy metal anions and heavy metal cations can be treated at the same time, when in electrolysis, the anode is electrified positively, and the high-valence heavy metal anions can be pulled into the ionic membrane three-dimensional electrode to perform oxidation-reduction reaction with a filling medium, and meanwhile, precipitation is produced and removed; the cathode is negatively charged, so that heavy metal cations: enters the ion membrane three-dimensional electrode to be chemically reacted with the filling medium to produce precipitate and be removed.
4. The invention has certain deposition substances generated at the cathode and the anode, but the invention is used for treating trace heavy metal ions, so that the three-dimensional electrode can be removed for a long time; the invention has no concentrated water generation and is a supplement to the treatment method of trace heavy metal ions.
Drawings
Fig. 1 is a schematic structural diagram of a device for electrochemical degradation of trace heavy metal ions in polluted water by using a working medium filled type ionic membrane three-dimensional electrode.
The device 1 for electrochemically degrading trace heavy metal ions in polluted water by using a working medium filled type ionic membrane three-dimensional electrode comprises an anode region 2, an anode polar plate 3, an anode filler (anode working medium) 4, an anode ionic membrane plate 5, an anode lead 6, a polluted water treatment region 7, a cathode region 8, a cathode polar plate 9, a cathode filler (cathode working medium) 10, a cathode ionic membrane plate 11 and a cathode lead 12.
Fig. 2 is a schematic structural diagram of another device of the invention, namely a device for electrochemical degradation of nonmetallic cations in polluted water by using a working medium filled type ion membrane three-dimensional electrode (a device schematic diagram for making the ion membrane three-dimensional electrode into a modularized form).
The device 1 for electrochemical degradation of nonmetallic cations in polluted water by using a working medium filled type ionic membrane three-dimensional electrode comprises an anode region 2, an anode polar plate 3, an anode filler (anode working medium) 4, an anode ionic membrane plate 5, an anode lead 6, a polluted water treatment region 7, a cathode region 8, a cathode polar plate 9, a cathode filler (cathode working medium) 10, a cathode ionic membrane plate 11 and a cathode lead 12.
Detailed Description
The technical scheme of the invention is further described below with reference to the accompanying drawings.
As shown in figure 1, the device for electrochemical degradation of trace heavy metal ions in polluted water by using the working medium filled type ionic membrane three-dimensional electrode comprises three parts: first, "cathode portion (cathode region) 8", second, "contaminated water treatment region 7", third, "anode portion (anode region) 2". The method is characterized in that: the cathode part (cathode region) 8 is a cathode whole body and consists of a cathode polar plate 9, a cathode filling material (cathode working medium) 10, a cathode ion membrane plate 11 and a cathode lead 12; the cathode part is separated from the polluted water treatment area 7 and the anode area 2 by a cathode ion membrane plate 11 (shown in figure 1); meanwhile, the cathode part (cathode area) 8 can be made into a standardized three-dimensional electrode, the shell of the electrode is the cathode ion membrane plate 11, and the three-dimensional cathode is separated from the polluted water treatment area 7 and the anode area 2 by the cathode ion membrane plate 11 (as shown in fig. 2).
Said second "contaminated water treatment zone" 7, which is intended to be fed with the contaminated water to be treated.
The anode part (anode zone) 2 of the device is an anode whole body, and the anode part consists of an anode plate 3, an anode filling material (anode working medium) 4, an anode ion membrane plate 5 and an anode lead 6; the anode part is separated from the polluted water treatment area 7 and the cathode area 8 by an anode ion membrane plate 5 (shown in figure 1); meanwhile, the anode part (anode region) 2 can be made into a standardized three-dimensional electrode, the shell of the electrode is the anode ion membrane plate 5, and the three-dimensional anode is separated from the polluted water treatment region 7 and the cathode region 8 by the anode ion membrane plate 5 (as shown in fig. 2).
Further:
according to the "cathode ion membrane plate" 11 and the "anode ion membrane plate" 5 described above, a cation exchange membrane is arranged in the "cathode ion membrane plate" 11, and an anion exchange membrane is arranged in the "anode ion membrane plate" 5;
further:
according to the "cathode filler (cathode working medium)" 10 and the "anode filler (anode working medium)" 4 described above, the "cathode filler" 10 employs a substance that can form a precipitate with heavy metal ions, and the "anode filler" 4 employs a substance that can form a precipitate with heavy metal ions while reducing;
further:
the "cathode plate", "anode plate" as described above is characterized by: the 'cathode polar plate' and the 'anode polar plate' are both made of graphite blocks.
The working medium filling type ionic membrane three-dimensional electrode electrochemical degradation device for trace heavy metal ions in polluted water comprises the following working steps: 1. an anode filler 4 and a cathode filler 10 are added to an anode part (anode region) 2 and a cathode part (cathode region) 8 of the device respectively; 2. adding to-be-treated polluted water containing refractory toxic and harmful trace heavy metal ions into a polluted water treatment area 7; 3. setting the voltage and the working time of a regulated direct current regulated power supply, wherein the power supply mode is that a cathode supplies negative electricity and an anode supplies positive electricity; 4. and 5, after a period of treatment, taking the degraded water polluted water treated in the polluted water treatment area 7, and detecting the content of trace heavy metal ions. If the standard is reached, the processing is ended.
In the above description, the treatment example is a static water treatment method, and if the treatment is a dynamic method, it is required to design the "contaminated water treatment area 7" as a treatment area with a water flow path, and contaminated water enters from one side and exits from the other side to purify the water. Multiple stages of processing may also be employed.
Example 1
The invention relates to a method and a device for electrochemically degrading trace heavy metal ions in polluted water by using a working medium filled type ionic membrane three-dimensional electrode, and provides the device for electrochemically degrading trace heavy metal ions in polluted water by using the working medium filled type ionic membrane three-dimensional electrode, wherein the polluted water to be treated introduced into a polluted water treatment area 7 contains trace high-valence heavy metal anions: crO (CrO) 4 2- And heavy metal cations: cr (Cr) 3+ The concentration of the catalyst is 20mg/l, sodium sulfite Na is added to the anode part (anode region) 2 2 SO 3 And "cathode portion (cathode region) 8" sodium carbonate Na is added 2 CO 3 The concentration is 100mg/l, the voltage of the regulated DC power supply is set to be 18V, and the working time is 1 hour, the method is operated according to the embodiment, after the advanced water treatment is carried out for one hour, the purified water sample is taken, and the CrO of the purified water sample is detected 4 2- And Cr (V) 3+ Is contained in the composition.
Example two
The invention relates to a method and a device for electrochemically degrading trace heavy metal ions in polluted water by using a working medium filled type ionic membrane three-dimensional electrode, and provides the device for electrochemically degrading trace heavy metal ions in polluted water by using the working medium filled type ionic membrane three-dimensional electrode, wherein the polluted water to be treated introduced into a polluted water treatment area 7 contains trace high-valence heavy metal anions: moO (MoO) 4 2- And heavy metal cations: mo (Mo) 2+ The concentration of the catalyst is 20mg/l, sodium sulfite Na is added to the anode part (anode region) 2 2 SO 3 And "cathode portion (cathode region) 8" sodium carbonate Na is added 2 CO 3 The concentration is 100mg/l, the voltage of the regulated DC power supply is set to be 18V, and the working time is 1 hour, the method is operated according to the embodiment, after the advanced water treatment is carried out for one hour, the purified water sample is taken, and the MoO is detected 4 2- And Mo (Mo) 2+ Is contained in the composition.
The foregoing is merely exemplary embodiments of the present invention, and specific structures and features that are well known in the art are not described in detail herein. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present invention, and these should also be considered as the scope of the present invention, which does not affect the effect of the implementation of the present invention and the practical applicability of the present invention.
Claims (4)
1. A device for electrochemically degrading trace heavy metal ions in polluted water by using a working medium filled type ionic membrane three-dimensional electrode comprises three parts: "cathode portion (cathode zone)", second "," contaminated water treatment zone ", third", "anode portion (anode zone)", characterized by:
the first term "cathode portion (cathode region)", which is a cathode whole, is composed of a cathode plate, a cathode filler (cathode working medium), a cathode ion membrane plate, and a cathode lead; the cathode part is separated from the polluted water treatment area and the anode area by a cathode ion membrane plate (shown in figure 1); meanwhile, the cathode part (cathode region) can be made into a standardized three-dimensional electrode, the shell of the electrode is a cathode ion membrane plate, and the three-dimensional cathode is separated from a polluted water treatment area and an anode area by the cathode ion membrane plate (as shown in figure 2);
the second "contaminated water treatment zone" for the passage of contaminated water to be treated;
the anode part (anode zone) of the device is an anode whole, and the anode part consists of an anode plate, an anode filling material (anode working medium), an anode ion membrane plate and an anode wire; the anode part is separated from the polluted water treatment area and the cathode area by an anode ion membrane plate (shown in figure 1); meanwhile, the anode part (anode region) can be made into a standardized three-dimensional electrode, the shell of the electrode is an anode ion membrane plate, and the three-dimensional anode is separated from the polluted water treatment region and the cathode region by the anode ion membrane plate (as shown in figure 2);
according to the "cathode ion membrane plate", "anode ion membrane plate" described above, it is characterized in that: the cathode ion membrane plate and the anode ion membrane plate are composed of ion exchange membranes and supporting screen plates, the polarities of the ion exchange membranes in the membrane plates are set according to different polarities for treating different polluted water, and when the toxic and harmful trace heavy metal ions are treated, in one set of electrolysis device, the ion exchange membranes in the cathode ion membrane plate and the anode ion membrane plate are as follows: "cathode" VS "anode" = "cation exchange membrane VS anion exchange membrane", i.e.: "+VS-", that is, "cathode ion membrane plate" in which cation exchange membrane is arranged and "anode ion membrane plate" in which anion exchange membrane is arranged;
according to the "cathode filler (cathode working medium)", "anode filler (anode working medium)", as described above, characterized in that: the cathode filler (cathode working medium) and the anode filler (anode working medium) are filled according to the property of the polluted water to be treated (trace heavy metal ions in the polluted water), the cathode filler adopts substances which can generate precipitation with the heavy metal ions, and the anode filler adopts substances which can generate precipitation with the heavy metal ions simultaneously with the reducibility.
2. The invention also discloses a method for electrochemically degrading trace heavy metal ions in the polluted water by using the working medium filled type ionic membrane three-dimensional electrode, which is characterized by comprising the following steps of: the device comprises: the water treatment method of the device for electrochemically degrading trace heavy metal ions in polluted water by using the working medium filled type ionic membrane three-dimensional electrode is as follows: an ion exchange membrane is used for isolating and allowing anions and cations to pass through, and toxic and harmful trace heavy metal ions are degraded by a chemical oxidation-reduction method and a precipitation method by combining the functions of a cathode filler (cathode working medium) and an anode filler (anode working medium).
3. The method for electrochemically degrading trace heavy metal ions in polluted water by using the working medium filled type ionic membrane three-dimensional electrode according to claim 2, which is characterized by comprising the following steps:
when the method is used for treating trace heavy metal ions, a cation exchange membrane is arranged in a cathode ion membrane plate in a device for electrochemically degrading trace heavy metal ions in polluted water by using a working medium filled type ion membrane three-dimensional electrode, and an anion exchange membrane is arranged in an anode ion membrane plate; the cathode filler adopts a substance capable of generating precipitation with heavy metal ions, and the anode filler adopts a substance capable of generating precipitation with heavy metal ions simultaneously with reducibility; the power supply mode is that the cathode supplies negative electricity and the anode supplies positive electricity.
4. The method for electrochemical degradation of trace heavy metal ions in polluted water by using a working medium filled type ionic membrane three-dimensional electrode according to claim 2, which is characterized in that the method is used for treating trace heavy metal ions, such as: high valence heavy metal anions: crO (CrO) 4 2- 、MoO 4 2- …, and heavy metal cations: cr (Cr) 3+ 、Mn 2+ … when in electrolysis, the anode is electrified positively, and high-valence heavy metal anions can be obtained: crO (CrO) 4 2- 、MoO 4 2- … is pulled into the ion membrane three-dimensional electrode to perform oxidation-reduction reaction with the filling medium, and simultaneously, precipitation is produced and removed; the cathode is negatively charged, so that heavy metal cations: cr (Cr) 3+ 、Mn 2+ … enters the ion membrane three-dimensional electrode to be subjected to chemical reaction with the filling medium to produce precipitate and be removed; the specific reaction is as follows:
and (3) a negative electrode:
toxic trace heavy metal ions such as: m is M n+ +XY n- →M n (XY) n
(the polluted component in the ion membrane electrode reacts with the filling medium and is degraded)
And (3) a positive electrode:
(1)MO N 2- →M n+ +(n+2)e，(2)M n+ +XY n- →M n (XY) n 。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310527019.0A CN116443995A (en) | 2023-05-11 | 2023-05-11 | Method and device for electrochemically degrading trace heavy metal ions in polluted water by using working medium filled type ionic membrane three-dimensional electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310527019.0A CN116443995A (en) | 2023-05-11 | 2023-05-11 | Method and device for electrochemically degrading trace heavy metal ions in polluted water by using working medium filled type ionic membrane three-dimensional electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116443995A true CN116443995A (en) | 2023-07-18 |
Family
ID=87125731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310527019.0A Pending CN116443995A (en) | 2023-05-11 | 2023-05-11 | Method and device for electrochemically degrading trace heavy metal ions in polluted water by using working medium filled type ionic membrane three-dimensional electrode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116443995A (en) |
-
2023
- 2023-05-11 CN CN202310527019.0A patent/CN116443995A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4596641A (en) | Electrochemical deionization | |
| CN102101733B (en) | Method for treating electroplating comprehensive wastewater by scrap iron electrolysis and electrochemical technology | |
| EP2390236A1 (en) | Sewage treatment process and apparatus for generating electric current and desalting simultaneously | |
| EP0683136A2 (en) | Silver removal | |
| CN104496089A (en) | Treatment method for heavy metal wastewater containing degradation-resistant organic matters | |
| CN105293643B (en) | The method of catalytic and oxidative electrolysis technology treated sewage | |
| CN110902895A (en) | Electrochemical membrane separation method for removing and recovering ammonia nitrogen in landfill leachate | |
| CN112978874B (en) | Method for purifying iodine salt-containing wastewater by using flowing electrode capacitive deionization device | |
| US5702587A (en) | Chemical and electrochemical regeneration of active carbon | |
| WO1997046490A1 (en) | Removal of metal salts by electrolysis using an ion exchange resin containing electrode | |
| JPH04231488A (en) | Electrochemical ion exchange equipment and method | |
| KR102130071B1 (en) | Method for simultaneous removal of ammonia, hydrogen sulfide and heavy metal in wastewater | |
| CN116443995A (en) | Method and device for electrochemically degrading trace heavy metal ions in polluted water by using working medium filled type ionic membrane three-dimensional electrode | |
| CN111285511A (en) | Pretreatment process before biochemical treatment of landfill leachate | |
| KR20170054781A (en) | Method for treating wastewater using microbial fuel cell with dual electrode structure | |
| JP2014139530A (en) | Regeneration method of eluent and regenerating apparatus therefor | |
| CN111807573B (en) | Treatment device and method for thallium-containing wastewater | |
| KR101745115B1 (en) | Method for power generation and removing heavy metals from wastewater using fuel cell and System for treating wastewater using the same | |
| CN110845055B (en) | Sectional type electrochemical water treatment device and method for treating water by adopting same | |
| JP3788688B2 (en) | Method and apparatus for electrolytic treatment of oxidized nitrogen-containing water | |
| CN108033524B (en) | Double-layer mixed bed membraneless electrodeionization system and method for heavy metal wastewater treatment | |
| CN116443994A (en) | Method and device for electrochemical degradation of nonmetallic cations in polluted water by using working medium filled type ionic membrane three-dimensional electrode | |
| CN105384223A (en) | Filter cloth capable of forming micro-electrolysis and application of filter cloth | |
| JPS62237398A (en) | Method of processing waste water containing radioactive organic iodine | |
| Yao et al. | Effect of Voltage on the Treatment of Cyanide Wastewater by Three-dimensional Electrode. |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication |