CN117756237A - Three-dimensional electrocatalytic oxidation device - Google Patents
Three-dimensional electrocatalytic oxidation device Download PDFInfo
- Publication number
- CN117756237A CN117756237A CN202410118378.5A CN202410118378A CN117756237A CN 117756237 A CN117756237 A CN 117756237A CN 202410118378 A CN202410118378 A CN 202410118378A CN 117756237 A CN117756237 A CN 117756237A
- Authority
- CN
- China
- Prior art keywords
- particle electrode
- shell
- particle
- aeration
- pipe
- 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
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 54
- 230000003647 oxidation Effects 0.000 title claims abstract description 52
- 239000002245 particle Substances 0.000 claims abstract description 238
- 238000005273 aeration Methods 0.000 claims abstract description 74
- 238000011049 filling Methods 0.000 claims abstract description 72
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 50
- 230000008878 coupling Effects 0.000 claims abstract description 37
- 238000010168 coupling process Methods 0.000 claims abstract description 37
- 238000005859 coupling reaction Methods 0.000 claims abstract description 37
- 238000009826 distribution Methods 0.000 claims abstract description 33
- 238000011010 flushing procedure Methods 0.000 claims description 35
- 238000000034 method Methods 0.000 claims description 27
- 238000005192 partition Methods 0.000 claims description 23
- 239000003795 chemical substances by application Substances 0.000 claims description 20
- 239000002689 soil Substances 0.000 claims description 18
- 239000003054 catalyst Substances 0.000 claims description 15
- 238000009423 ventilation Methods 0.000 claims description 15
- 239000012798 spherical particle Substances 0.000 claims description 13
- 238000001035 drying Methods 0.000 claims description 12
- 238000000227 grinding Methods 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 12
- 238000004321 preservation Methods 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 12
- MRHSJWPXCLEHNI-UHFFFAOYSA-N [Ti].[V].[Fe] Chemical compound [Ti].[V].[Fe] MRHSJWPXCLEHNI-UHFFFAOYSA-N 0.000 claims description 11
- 230000003213 activating effect Effects 0.000 claims description 9
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 8
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 6
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 claims description 6
- 229920002472 Starch Polymers 0.000 claims description 5
- 239000008107 starch Substances 0.000 claims description 5
- 235000019698 starch Nutrition 0.000 claims description 5
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 4
- 239000005751 Copper oxide Substances 0.000 claims description 4
- XHCLAFWTIXFWPH-UHFFFAOYSA-N [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] XHCLAFWTIXFWPH-UHFFFAOYSA-N 0.000 claims description 4
- 238000000498 ball milling Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 229910000431 copper oxide Inorganic materials 0.000 claims description 4
- 238000005188 flotation Methods 0.000 claims description 4
- 239000011261 inert gas Substances 0.000 claims description 4
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 4
- YDZQQRWRVYGNER-UHFFFAOYSA-N iron;titanium;trihydrate Chemical compound O.O.O.[Ti].[Fe] YDZQQRWRVYGNER-UHFFFAOYSA-N 0.000 claims description 4
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims description 4
- 238000002791 soaking Methods 0.000 claims description 4
- 239000004408 titanium dioxide Substances 0.000 claims description 4
- 229910052720 vanadium Inorganic materials 0.000 claims description 4
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 4
- 229910001935 vanadium oxide Inorganic materials 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 4
- 229910000628 Ferrovanadium Inorganic materials 0.000 claims description 3
- 239000004793 Polystyrene Substances 0.000 claims description 3
- 239000012190 activator Substances 0.000 claims description 3
- 229910000428 cobalt oxide Inorganic materials 0.000 claims description 3
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical compound [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 claims description 3
- PNXOJQQRXBVKEX-UHFFFAOYSA-N iron vanadium Chemical compound [V].[Fe] PNXOJQQRXBVKEX-UHFFFAOYSA-N 0.000 claims description 3
- 235000019362 perlite Nutrition 0.000 claims description 3
- 239000010451 perlite Substances 0.000 claims description 3
- 229920002223 polystyrene Polymers 0.000 claims description 3
- 239000011787 zinc oxide Substances 0.000 claims description 3
- 230000008569 process Effects 0.000 description 16
- 239000007789 gas Substances 0.000 description 7
- 239000002351 wastewater Substances 0.000 description 7
- 238000005276 aerator Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000005868 electrolysis reaction Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- GVFOJDIFWSDNOY-UHFFFAOYSA-N antimony tin Chemical compound [Sn].[Sb] GVFOJDIFWSDNOY-UHFFFAOYSA-N 0.000 description 2
- 238000011001 backwashing Methods 0.000 description 2
- 238000005315 distribution function Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000006722 reduction reaction Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 238000006424 Flood reaction Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 210000005056 cell body Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical group O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Landscapes
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The application discloses three-dimensional electrocatalytic oxidation device, the shell is provided with water inlet and delivery port, negative pole and positive pole are parallel just to arranging, particle electrode module detachably sets up in the shell and arranges between negative pole and positive pole, the inner chamber of baffle with the casing is separated for particle electrode filling room and back flush air distribution chamber, particle electrode filling room and the inner chamber intercommunication of shell, the baffle is provided with the ventilative structure with particle electrode filling room and back flush air distribution chamber intercommunication, particle electrode arrangement is in particle electrode filling room, a portion of aeration pipe sets up in back flush air distribution chamber and is provided with the venthole, another portion is located the outside of casing and cooperates with coupling device detachably, coupling device is used for the external compressed air that carries in to the aeration pipe. The device effectively solves the technical problems of mutual hardening of the particle electrodes and the electrodes, the whole replacement of the particle electrode module is simple, and the convenience of the replacement of the particle electrodes is greatly improved.
Description
Technical Field
The application relates to the technical field of wastewater treatment, in particular to a three-dimensional electrocatalytic oxidation device.
Background
With the development of economy, various non-biodegradable emerging organic pollutants exist widely in urban sewage and industrial wastewater, and the treatment of the matters is always a puzzlement. The conventional treatment process is a high-grade oxidation method, and in many high-grade oxidation processes, the electrocatalytic oxidation technology is widely focused in the field of wastewater treatment due to the advantages of good treatment effect, no need of additional chemical agents, no secondary pollution and the like. Compared with a small unit cell body, the traditional flat plate two-dimensional electrode has the advantages of small processing capacity and low current efficiency, and particularly at low conductivity, so that breakthrough progress is difficult in practice. The three-dimensional electrolysis technology is based on the traditional flat plate two-dimensional electrode, particle electrodes are added, the surface area of the particle electrodes is greatly increased, the surface-to-body ratio of the electrolytic tank is increased, and in addition, the filled particle electrodes have small spacing, so that the mass transfer speed of substances is increased, and the current efficiency and the processing capacity are improved.
The three-dimensional electrocatalytic oxidation technology has the advantages of being limited by high equipment investment, high operation cost and the like, being less in practical engineering application, not having mature equipment and technology, and being required to develop a great deal of research work and engineering practice in the aspects of structural design of a reaction device, material selection of polar plates and particle electrodes, optimization of operation process conditions and the like. The traditional three-dimensional electrocatalytic oxidation device mainly has the following defects: particle electrodes are naturally stacked in an insulating frame to be in a contact state, and due to the fact that the raw materials of the particle electrodes are unreasonable in proportion, no catalyst is contained, short flow is serious when filling filler is backflushed, and the like, the three-dimensional electrocatalytic oxidation process is operated for several hours or days, so that the particle electrodes are hardened, and the particle electrodes are hardened with the electrode plates, so that the phenomena of uneven water distribution, low current efficiency, increased energy consumption and poor water quality of effluent are caused, and the performance of the particle electrodes is seriously influenced; when the particle electrode is replaced, the particle electrode is required to be gradually dug out in the frame, so that the operation is inconvenient and the efficiency is low; the particle electrode is filled between the cathode and the anode, and the particle electrode is fluidized by aeration only, so that the extremely large aeration quantity is required to be maintained, and the energy consumption is high.
Disclosure of Invention
The application provides a three-dimensional electrocatalytic oxidation device to solve among the above-mentioned traditional three-dimensional electrocatalytic oxidation device, particle electrode mutually harden, particle electrode and electrode plate are easy to harden, change the inconvenient, the aeration volume is big, the high technical problem of energy consumption of particle electrode operation.
The technical scheme adopted by the application is as follows:
the three-dimensional electrocatalytic oxidation device comprises a shell and an electrocatalytic oxidation system arranged in the shell, wherein the shell is provided with a water inlet and a water outlet, the electrocatalytic oxidation system comprises a cathode, an anode, a particle electrode module and a coupling device, the cathode and the anode are parallel and are arranged opposite to each other, and the particle electrode module is detachably arranged in the shell and is arranged between the cathode and the anode; the particle electrode module comprises a particle electrode, an aeration pipe, a shell and a baffle plate arranged in the shell, wherein the inner cavity of the shell is divided into a particle electrode filling chamber and a back flushing air distribution chamber by the baffle plate, the particle electrode filling chamber is communicated with the inner cavity of the shell, the baffle plate is provided with a ventilation structure for communicating the particle electrode filling chamber with the back flushing air distribution chamber, the particle electrode is arranged in the particle electrode filling chamber, one part of the aeration pipe is arranged in the back flushing air distribution chamber and is provided with an air outlet, the other part of the aeration pipe is positioned at the outer side of the shell and is detachably matched with the coupling device, and the coupling device is used for conveying compressed air into the aeration pipe from outside.
The three-dimensional electrocatalytic oxidation device in the application also has the following additional technical characteristics:
the particle electrode is prepared by adopting the following method, and specifically comprises the following steps: s1, ball milling vanadium-titanium-iron ore flotation tailings in a ball mill, taking out from the ball mill, washing, soaking, then placing in an oven, and drying at 115 ℃ to prepare dried vanadium-titanium-iron ore for later use; placing the calcareous soil in an oven, and drying at 115 ℃ to prepare dry calcareous soil for later use; s2, preparing the dried vanadium ilmenite, the dried calcareous soil, the pore-forming agent, the activating agent and the catalyst according to the following weight percentages: 45-60% of dried ferrovanadium ore, 10-20% of calcareous soil, 10-20% of pore-forming agent, 10-20% of activating agent and 1-5% of catalyst; placing the prepared dried vanadium-titanium-iron ore, dried calcareous soil, an activating agent and a catalyst into a ball mill for stirring and grinding, and grinding the size to 60-150 meshes; s3, taking out the mixed material after stirring and grinding in the ball mill, adding the prepared pore-forming agent, and uniformly stirring to prepare spherical particles of 6-10 mm; s4, drying the prepared spherical particles in an oven at 115 ℃ for 8-12 hours, heating the dried spherical particles to 130-150 ℃ under the protection of inert gas, performing heat preservation treatment for 0.5-1 hour, heating to 340-360 ℃, continuing heat preservation treatment for 2-4 hours, heating to 1150-1180 ℃, continuing heat preservation treatment for 5-7 hours, and finally naturally cooling to room temperature to obtain the particle electrode.
The pore-forming agent is perlite, starch or polystyrene particles; and/or the activator comprises at least one of ferric oxide, manganese oxide, zinc oxide and copper oxide; and/or the catalyst comprises at least one of titanium dioxide, vanadium oxide and cobalt oxide.
The filling volume of the particle electrode in the particle electrode filling chamber is 70% -80% of the volume of the particle electrode filling chamber.
The volume of the particle electrode filling chamber is 60% -80% of the total volume of the inner cavity of the shell.
The inner cavity of the shell is surrounded by a bottom plate and a side plate, the side plate comprises a water permeable area and a sealing area from top to bottom, the partition board is transversely arranged between the water permeable area and the sealing area, the water permeable area and the partition board enclose the particle electrode filling chamber, the water permeable area is provided with a plurality of uniformly distributed water permeable meshes, the diameter of each water permeable mesh is smaller than that of each particle electrode, and the sealing area, the partition board and the bottom plate enclose the backwash air distribution chamber.
The ventilation structure comprises a plurality of ventilation holes which are uniformly distributed in the partition board, and the diameter of each ventilation hole is smaller than that of the particle electrode.
The aeration pipe comprises an aeration main pipe and an aeration branch pipe, one part of the aeration main pipe is arranged in the back flush air distribution chamber, the other part of the aeration main pipe is positioned at the outer side of the shell and is detachably matched with the coupling device, the aeration branch pipe is arranged in the back flush air distribution chamber, a plurality of aeration branch pipes are arranged at intervals along the axial direction of the aeration main pipe and are communicated with the aeration main pipe, and a plurality of air outlets are arranged at intervals along the axial direction of the aeration branch pipe.
The end of the aeration main pipe, which is positioned outside the shell, is provided with a connecting sheet, and the aeration main pipe is attached to the coupling device through the connecting sheet.
The coupling device comprises a coupler body with an air inlet pipe and a guide rod connected with the coupler body, wherein the shell is provided with a guide part extending outwards, the guide part is provided with a limiting ring, and the limiting ring can be sleeved on the guide rod so as to be installed in or taken out from the shell under the guiding action of the guide rod.
Due to the adoption of the technical scheme, the technical effects obtained by the application are as follows:
1. compared with the plate electrode, the particle electrode has larger specific surface area, and the particle electrode in the cathode region and the anode region can be used as an extension part of the cathode and the anode, so that the surface area of the electrode actually participating in the reaction is increased, and the electrolysis efficiency is improved; the particle electrode positioned in the middle area of the cathode and the anode has the polarity under the action of an electric field, the two ends of the particle electrode particles respectively have the characteristics of the cathode and the anode, and each particle electrode particle becomes an independent electrolytic oxidation/reduction reaction unit.
2. The particle electrode, the aerator pipe, the shell and the separator are combined into a whole to form an independent particle electrode module, the particle electrode is not contacted with the cathode and the anode, and the phenomenon that the particle electrode is hardened with the cathode and the anode respectively is avoided; the particle electrode module is detachably arranged in the shell and arranged between the cathode and the anode and is detachably matched with the coupling device, when the particle electrode module is installed in place in the shell, the aeration pipe can be matched with the coupling device, and the particle electrode module can be taken out from the shell after the aeration pipe is separated from the coupling device in advance, so that when the particle electrodes are seriously hardened or the service life of the particle electrodes is expired, the particle electrodes are required to be replaced, the particle electrodes are not required to be gradually dug out in the shell, the particle electrode module is only required to be taken out from the shell as a whole, the disassembly and the assembly are simple, and the convenience of replacing the particle electrodes is greatly improved.
3. The particle electrode is arranged in the particle electrode filling chamber, the partition plate is provided with an air vent structure, the part of the aeration pipe, which is positioned in the back flushing air distribution chamber, is provided with an air outlet hole, so that the device has the back flushing air distribution function, compressed air can be conveyed into the aeration pipe through the coupling device when the device runs for a preset period of time, the compressed air is discharged through the air outlet hole to form a large number of bubbles, the bubbles enter the particle electrode filling chamber through the air vent structure to recoil the particle electrode, flushing power is provided for the flushing process, the particle electrodes which are hardened together can be flushed by kinetic energy generated when the bubbles are broken in the particle electrode filling chamber, the phenomenon of hardening between the particle electrodes is reduced, the advantages of uniform back flushing and short flow prevention are realized, in addition, the gas entering the particle electrode filling chamber can also drive the particle electrodes to flow, so that the substrate material produced by breakage of the particle electrode in the electrocatalytic oxidation process is discharged from the water outlet under the drive of gas, and the continuous and stable running of the electrocatalytic oxidation process is ensured.
4. According to the method for preparing the particle electrode, the proportion of the raw materials of the particle electrode is optimized, the catalyst is added, the sintering temperature is improved, the microstructure of the particle electrode is an alloy of various metals, the various alloys are distributed on the surface of the particle electrode at intervals, hardening caused by oxidation adhesion of the same materials between adjacent particle electrodes can be effectively avoided, compared with the conventional particle electrode with uneven micropore distribution and micropores in a groove shape, the particle electrode prepared by the method can effectively avoid metal aggregation, the specific surface area of the material is increased, more active sites are introduced on the surface of the particle electrode, and the electrocatalytic efficiency is improved.
5. The filling volume of the particle electrode in the particle electrode filling chamber is 70% -80% of the volume of the particle electrode filling chamber, so that other empty spaces in the particle electrode filling chamber provide space feasibility for the particle electrode to flow in the particle electrode filling chamber, and particularly space feasibility is provided for the expansion of the distance between the particle electrode filling chamber and the particle electrode filling chamber in the back flushing process, so that the hardening phenomenon is promoted to disappear rapidly, the particle electrode can be effectively prevented from being separated from the shell under the driving of gas, and the particle electrode is ensured to be stably stored in the shell.
6. The volume of the particle electrode filling chamber is 60% -80% of the total volume of the inner cavity of the shell, so that the volume of the particle electrode filling chamber is increased as much as possible on the basis of ensuring that the aeration pipe has enough installation space and bubble forming space in the backwashing gas distribution chamber, the amount of the particle electrode capable of being filled in the particle electrode filling chamber is effectively increased, and the electrocatalytic oxidation reaction efficiency of the device on wastewater is improved.
7. The water permeable area and the partition board enclose a particle electrode filling chamber, the water permeable area is provided with a plurality of water permeable meshes which are uniformly distributed, so that wastewater entering the shell from the water inlet can enter the particle electrode filling chamber through the water permeable meshes to submerge the particle electrode, and the diameter of the water permeable meshes is smaller than that of the particle electrode to prevent the particle electrode from being unable to pass out of the water permeable meshes to the outer side of the shell, so that the particle electrode is ensured to be stably stored in the shell; the sealing area, the partition plate and the bottom plate enclose a back flushing air distribution chamber, so that compressed air discharged from the air outlet of the aeration pipe efficiently and fully enters the particle electrode filling chamber through the ventilation structure on the partition plate, and the back flushing efficiency and the back flushing effect are improved.
8. The coupling device comprises a guide rod, the shell is provided with an outwards extending guide part, the guide part is provided with a limiting ring, and the limiting ring can be sleeved on the guide rod to be installed in or taken out from the shell under the guiding action of the guide rod, so that reliable guidance is provided for the installation process of the particle electrode module in the shell and the outwards taking-out process from the shell through the cooperation of the limiting ring and the guide rod, and the convenience and the replacement efficiency of the disassembly and assembly of the particle electrode are effectively improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:
fig. 1 is a schematic structural diagram of a three-dimensional electrocatalytic oxidation device according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a three-dimensional electrocatalytic oxidation device according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a particle electrode module according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a particle electrode module according to an embodiment of the present disclosure;
fig. 5 is a schematic structural view of a side plate of the housing according to the embodiment of the present application;
FIG. 6 is a schematic structural view of a separator according to an embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of a coupling device according to an embodiment of the present disclosure;
FIG. 8 is a graph of experimental data for the operation of a three-dimensional electrocatalytic oxidation apparatus according to an embodiment of the present application;
FIG. 9 is a diagram of experimental embodiments of the three-dimensional electrocatalytic oxidation device according to an embodiment of the present disclosure;
FIG. 10 is a microstructure image of a particle electrode made by the methods provided herein;
fig. 11 is a microstructure image of a conventional particle electrode.
List of parts and reference numerals:
1 a shell, 11 a water inlet and 12 a water outlet;
2 cathode;
3, anode;
the device comprises a 4 particle electrode module, a 41 particle electrode, a 42 aeration pipe, a 421 aeration main pipe, a 422 aeration branch pipe, a 43 shell, a 431 bottom plate, a 432 side plate, a 4321 permeable region, a 4322 sealing region, 4323 permeable meshes, a 44 partition plate, 441 air holes, a 45 particle electrode filling chamber, a 46 back flushing air distribution chamber, a 47 connecting sheet, a 48 guide part and a 49 limit ring;
5 coupling means, 51 air inlet pipe, 52 coupler body, 53 guide bar.
Detailed Description
In order to more clearly illustrate the general concepts of the present application, a detailed description is provided below by way of example in connection with the accompanying drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced otherwise than as described herein, and thus the scope of the present application is not limited by the specific embodiments disclosed below.
In addition, in the description of the present application, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," "transverse," "longitudinal," etc. indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the devices or elements being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; the device can be mechanically connected, electrically connected and communicated; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
In this application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In the embodiments of the present application, a three-dimensional electrocatalytic oxidation device is provided, and for convenience of explanation and understanding, the following descriptions are provided based on the structure of the illustrated product. Of course, those skilled in the art will appreciate that the foregoing structure is merely exemplary and illustrative and is not to be construed as limiting the scope of the embodiments provided herein.
Referring to fig. 1 to 7, the three-dimensional electrocatalytic oxidation device provided by the application comprises a shell 1 and an electrocatalytic oxidation system arranged in the shell 1, wherein the shell 1 is provided with a water inlet 11 and a water outlet 12, the electrocatalytic oxidation system comprises a cathode 2, an anode 3, a particle electrode module 4 and a coupling device 5, the cathode 2 and the anode 3 are parallel and are opposite to each other, and the particle electrode module 4 is detachably arranged in the shell 1 and is arranged between the cathode 2 and the anode 3; the particle electrode module 4 comprises a particle electrode 41, an aerator pipe 42, a shell 43 and a baffle plate 44 arranged in the shell 43, wherein the inner cavity of the shell 43 is divided into a particle electrode filling chamber 45 and a back flushing air distribution chamber 46 by the baffle plate 44, the particle electrode filling chamber 45 is communicated with the inner cavity of the shell 1, the baffle plate 44 is provided with an air permeable structure for communicating the particle electrode filling chamber 45 with the back flushing air distribution chamber 46, the particle electrode 41 is arranged in the particle electrode filling chamber 45, one part of the aerator pipe 42 is arranged in the back flushing air distribution chamber 46 and is provided with an air outlet, the other part of the aerator pipe 42 is positioned outside the shell 43 and is detachably matched with the coupling device 5, and the coupling device 5 is used for conveying compressed air into the aerator pipe 42 from outside.
In the three-dimensional electrocatalytic oxidation device provided by the application, compared with a plate electrode, the particle electrode 41 has larger specific surface area, the particle electrode 41 in the cathode region and the anode region can be used as an extension part of the cathode 2 and the anode 3, so that the surface area of an electrode actually participating in a reaction is increased, and the electrolysis efficiency is improved; the particle electrode 41 positioned in the middle area of the cathode 2 and the anode 3 has the bipolar property under the action of an electric field, the two ends of particles of the particle electrode 41 are respectively provided with the characteristics of the cathode and the anode, and each particle electrode 41 becomes an independent electrolytic oxidation/reduction reaction unit.
In addition, the particle electrode 41, the aerator pipe 42, the shell 43 and the separator 44 are combined into a whole to form an independent particle electrode module 4, the particle electrode 41 is not contacted with the cathode 2 and the anode 3, and the phenomenon that the particle electrode 41 is hardened with the cathode 2 and the anode 3 respectively is avoided; the particle electrode module 4 is detachably arranged in the shell 1 and is arranged between the cathode 2 and the anode 3 and is detachably matched with the coupling device 5, when the particle electrode module 4 is installed in place in the shell 1, the aeration pipe 42 can be matched with the coupling device 5, and the particle electrode module 4 can be taken out from the shell 1 by separating the aeration pipe 42 from the coupling device 5 in advance, so that when the particle electrodes 41 are seriously hardened or the service life of the particle electrodes is expired, the particle electrodes are required to be replaced, the particle electrodes are not required to be gradually dug out in the shell 43, and only the whole particle electrode module 4 is required to be taken out from the shell 1, the assembly and the disassembly are simple, and the convenience of replacing the particle electrodes is greatly improved.
In addition, the particle electrode 41 is arranged in the particle electrode filling chamber 45, the partition plate 44 is provided with a ventilation structure, the part of the aeration pipe 42, which is positioned in the back flushing distribution chamber 46, is provided with air outlet holes, so that the device has the back flushing distribution function, compressed air can be conveyed into the aeration pipe 42 through the coupling device 5 when the device runs for a preset period, the compressed air is discharged through the air outlet holes to form a large number of bubbles, the bubbles enter the particle electrode filling chamber 45 through the ventilation structure to recoil the particle electrode 41, flushing power is provided for the flushing process, the particle electrode 41 which is hardened together can be flushed by kinetic energy generated when the bubbles break in the particle electrode filling chamber 45, the phenomenon of hardening between the particle electrodes 41 is reduced, the advantages of uniform back flushing and short flow prevention are achieved, and the gas entering the particle electrode filling chamber 45 can also drive the particle electrode 41 to flow, so that the substrate material produced by breakage in the particle electrode 41 in the electrocatalytic oxidation process is discharged from the water outlet 12 under the driving of the gas, and the continuous stable running of the electrocatalytic oxidation process is ensured.
As a preferred embodiment of the present application, the particle electrode 41 is prepared by a method comprising the following steps:
s1, ball milling vanadium-titanium-iron ore flotation tailings in a ball mill, taking out from the ball mill, washing, soaking, then placing in an oven, and drying at 115 ℃ to prepare dried vanadium-titanium-iron ore for later use; placing the calcareous soil in an oven, and drying at 115 ℃ to prepare dry calcareous soil for later use;
s2, preparing the dried vanadium ilmenite, the dried calcareous soil, the pore-forming agent, the activating agent and the catalyst according to the following weight percentages: 45-60% of dried ferrovanadium ore, 10-20% of calcareous soil, 10-20% of pore-forming agent, 10-20% of activating agent and 1-5% of catalyst; placing the prepared dried vanadium-titanium-iron ore, dried calcareous soil, an activating agent and a catalyst into a ball mill for stirring and grinding, and grinding the size to 60-150 meshes;
s3, taking out the mixed material after stirring and grinding in the ball mill, adding the prepared pore-forming agent, and uniformly stirring to prepare spherical particles of 6-10 mm;
s4, drying the prepared spherical particles in an oven at 115 ℃ for 8-12 hours, heating the dried spherical particles to 130-150 ℃ under the protection of inert gas, performing heat preservation treatment for 0.5-1 hour, heating to 340-360 ℃, continuing heat preservation treatment for 2-4 hours, heating to 1150-1180 ℃, continuing heat preservation treatment for 5-7 hours, and finally naturally cooling to room temperature to obtain the particle electrode 41.
According to the method for preparing the particle electrode 41, the particle electrode 41 which is free of hardening is prepared by optimizing the raw material ratio of the particle electrode 41, adding the catalyst and improving the sintering temperature, the particle electrode 41 which is free of hardening is applied to the three-dimensional electrocatalytic oxidation device, when a large number of particle electrodes 41 are naturally stacked in the shell 43, the particle electrodes 41 which are in contact with each other are basically free of hardening, the technical problem that the particle electrode 41 is hardened in the operation process of the three-dimensional electrocatalytic process is solved, the aeration quantity of backwashing is effectively reduced, and the energy consumption is saved.
In a preferred embodiment, the pore former is perlite, starch, or polystyrene particles; in another preferred embodiment, the activator comprises at least one of ferric oxide, manganese oxide, zinc oxide, copper oxide; in yet another preferred embodiment, the catalyst comprises at least one of titanium dioxide, vanadium oxide, cobalt oxide.
Embodiment one: the preparation method of the particle electrode 41 for the three-dimensional electrocatalytic oxidation apparatus of this embodiment is carried out as follows:
s1, ball milling vanadium-titanium-iron ore flotation tailings in a ball mill, taking out from the ball mill, washing, soaking, then placing in an oven, and drying at 115 ℃ to prepare dried vanadium-titanium-iron ore for later use; placing the calcareous soil in an oven, and drying at 115 ℃ to prepare dry calcareous soil for later use;
s2, putting the dried vanadium ilmenite, the dried calcareous soil, the starch, the ferric oxide, the copper oxide, the titanium dioxide and the vanadium oxide into a ball mill according to the weight ratio of 45g, 25g, 10g, 5g, 3g and 2g, stirring and grinding, and grinding the mixture to 60-150 meshes;
s3, taking out the mixed material after stirring and grinding in the ball mill, adding 10g of starch, uniformly stirring, and extruding to prepare spherical particles of 6-10 mm;
s4, drying the prepared spherical particles in an oven at 115 ℃ for 8-12 hours, heating the dried spherical particles to 130-150 ℃ under the protection of inert gas, performing heat preservation treatment for 0.5-1 hour, heating to 340-360 ℃, continuing heat preservation treatment for 2-4 hours, heating to 1150-1180 ℃, continuing heat preservation treatment for 5-7 hours, and finally naturally cooling to room temperature to obtain the particle electrode 41.
Practical application of this embodiment: the experimental optimal conditions of the three-dimensional electrocatalytic oxidation device are as follows: 10mA/cm is supplied by a direct current stabilized power supply 2 The current, titanium-based tin antimony electrode and stainless steel plate are respectively an anode 3 and a cathode 2, the particle electrode module 4 is filled with the particle electrode 41 prepared by the method in the example, the filling amount accounts for 70% of the total volume of the particle electrode filling chamber 45, and the equipment is backwashed for 3min every 60min of running.
Referring to FIG. 8, the three-dimensional electrocatalytic oxidation device is operated intermittently, water is maleic anhydride production wastewater with strong biochemical toxicity, COD is reduced from 28100mg/L to 14208mg/L through operation treatment of equipment for 240min, the COD removal rate is 49.5%, and B/C is improved from 0.05 to 0.31.
Referring to table 1, the three-dimensional electrocatalytic oxidation apparatus was continuously operated for 44 days, the COD removal rate was maintained in a steady state, and the particle electrode 41 was free from hardening.
Table 1:
comparative example: the experimental conditions of the three-dimensional electrocatalytic oxidation device are as follows, and a direct-current stabilized power supply provides 10mA/cm 2 The current, the titanium-based tin-antimony electrode and the stainless steel plate are respectively an anode 3 and a cathode 2, the particle electrode module 4 is filled with common particle electrodes in the market, the reaction effect is reduced after 7d operation, and as shown in fig. 9, the situation that the particle electrodes are mutually hardened (each black spherical particle in fig. 9 is one particle electrode) occurs.
Fig. 10 shows a microstructure image of a particle electrode prepared by the method, and fig. 11 shows a microstructure image of a conventional particle electrode, wherein the microstructure of the particle electrode prepared by the method provided by the application is an alloy of a plurality of metals, and the alloys are arranged on the surface of the particle electrode at intervals, so that hardening caused by oxidation adhesion of the same material between adjacent particle electrodes can be effectively avoided.
As a preferred embodiment of the present application, the filling volume of the particle electrode 41 in the particle electrode filling chamber 45 is 70% -80% of the volume of the particle electrode filling chamber 45, so that other empty spaces in the particle electrode filling chamber 45 provide space feasibility for the particle electrode 41 to flow in the particle electrode filling chamber 45, especially space feasibility for enlarging the distance between the particle electrode 41 and the particle electrode filling chamber 45 in the back flushing process, promote the rapid disappearance of the hardening phenomenon, and effectively prevent the particle electrode 41 from being pulled out of the housing 43 by the gas, so as to ensure that the particle electrode 41 is stably stored in the housing 43.
As a preferred embodiment of the present application, the volume of the particle electrode filling chamber 45 is 60% -80% of the total volume of the inner cavity of the housing 43, so that the volume of the particle electrode filling chamber 45 is increased as much as possible on the basis of ensuring that the aeration pipe 42 has enough installation space and bubble forming space in the backwash air distribution chamber 46, thereby effectively increasing the amount of the fillable particle electrode 41 in the particle electrode filling chamber 45 and improving the electrocatalytic oxidation reaction efficiency of the device on wastewater.
Regarding the structure of the casing 43, as shown in fig. 3 and 5, as a preferred embodiment of the present application, the inner cavity of the casing 43 is surrounded by a bottom plate 431 and a side plate 432, the side plate 432 includes a water permeable region 4321 and a sealing region 4322 from top to bottom, the partition 44 is transversely disposed between the water permeable region 4321 and the sealing region 4322, the water permeable region 4321 and the partition 44 enclose the particle electrode filling chamber 45, the water permeable region 4321 is provided with a plurality of water permeable meshes 4323 uniformly distributed, the diameter of the water permeable meshes 4323 is smaller than the diameter of the particle electrode 41, and the sealing region 4322, the partition 44 and the bottom plate 431 enclose the back flushing air distribution chamber 46. As will be appreciated by those skilled in the art, the water permeable region 4321 and the partition 44 enclose the particle electrode filling chamber 45, the water permeable region 4321 is provided with a plurality of water permeable mesh openings 4323 which are uniformly distributed so that the waste water entering the housing 1 from the water inlet 11 can enter the particle electrode filling chamber 45 through the water permeable mesh openings 4323 to submerge the particle electrodes 41, and the diameter of the water permeable mesh openings 4323 is smaller than the diameter of the particle electrodes 41 to prevent the particle electrodes 41 from failing to pass out of the water permeable mesh openings 4323 to the outside of the housing 43, ensuring that the particle electrodes 41 are stably stored in the housing 43; the sealing area 4322, the partition plate 44 and the bottom plate 431 enclose a back flushing air distribution chamber 46, so that compressed air discharged from the air outlet holes of the aeration pipe 42 efficiently and fully enters the particle electrode filling chamber 45 through the ventilation structure on the partition plate 44, and the back flushing efficiency and the back flushing effect are improved.
Regarding the structure of the separator 44, as a preferred embodiment of the present application, as shown in fig. 6, the ventilation structure includes a plurality of ventilation holes 441 uniformly distributed in the separator 44, and the ventilation holes 441 have a diameter smaller than that of the particle electrodes 41. Through the uniform distribution of the air holes 441, the air bubbles generated by the back flushing air distribution chamber 46 can be uniformly diffused into the particle electrode filling chamber 45, so that the particle electrodes 41 corresponding to the partition plate 44 can be effectively flushed.
Regarding the structure of the aeration pipe 42, as a preferred embodiment of the present application, as shown in fig. 3 and 4, the aeration pipe 42 includes an aeration main pipe 421 and an aeration branch pipe 422, a part of the aeration main pipe 421 is disposed in the back flushing air distribution chamber 46, another part is located outside the housing 43 and detachably engaged with the coupling device 5, the aeration branch pipe 422 is disposed in the back flushing air distribution chamber 46, a plurality of aeration branch pipes 422 are disposed at intervals along the axial direction of the aeration main pipe 421 and are communicated with the aeration main pipe 421, and a plurality of air outlet holes are disposed at intervals along the axial direction of the aeration branch pipe 422. The aeration main pipe 421 serves as a main pipe for receiving the compressed air output by the coupling device 5, and uniformly distributes the compressed air into each aeration branch pipe 422, so that the compressed air is uniformly sprayed into the back flush air distribution chamber 46 through the air outlet holes of each aeration branch pipe 422 to form uniform and dense bubbles, and the bubbles can be uniformly diffused into the particle electrode filling chamber 45, so that the particle electrodes 41 at the positions corresponding to the partition plates 44 can be effectively flushed.
Further, as shown in fig. 1 to 3, a connecting piece 47 is provided at an end of the aeration dry pipe 421 located outside the housing 43, and the aeration dry pipe 421 is attached to the coupling device 5 through the connecting piece 47. In the preferred embodiment, the connecting piece 47 and the coupling device 5 can be matched by adopting the modes of magnetic attraction matching, clamping hole matching and the like, so that the reliable communication between the aeration main pipe 421 and the coupling device 5 is ensured, and meanwhile, the convenience in dismounting the aeration main pipe 421 and the coupling device 5 is also ensured.
Regarding the structure of the coupling device 5, as a preferred embodiment of the present application, as shown in fig. 1 and 7, the coupling device 5 includes a coupler body 52 with an air inlet pipe 51 and a guide rod 53 connected to the coupler body 52, the housing 43 is provided with an outwardly extending guide portion 48, the guide portion 48 is provided with a limit ring 49, and the limit ring 49 can be sleeved on the guide rod 53 to be installed in the housing 1 or taken out from the housing 1 under the guiding action of the guide rod 53. Through the cooperation of spacing ring 49 and guide bar 53, provide reliable guide to the installation process of particle electrode module 4 in towards shell 1 and outwards take out the process from shell 1, effectively promote the convenience and the reloading efficiency of particle electrode 41 dismouting.
The operation steps (the operation steps are not only, the following steps cannot be defined for the application) of the three-dimensional electrocatalytic oxidation device provided by the application are as follows:
1. filling the particle electrode 41 prepared by the particle electrode 41 preparation method into a particle electrode filling chamber 45, wherein the filling amount is 70% -80% of the particle electrode filling chamber; then, the limiting rings 49 on the side edges of the particle electrode modules 4 penetrate through the guide rods 53, the particle electrode modules 4 are vertically and downwards placed, and after the particle electrode modules are placed to the bottom, the connecting pieces 47 at the end parts of the aeration dry tubes 421 can be just attached to the coupling devices 5;
2. the wastewater enters the shell 1 from the water inlet 11, and the cathode 2 and the anode 3 are electrified, so that the wastewater floods the cathode 2 and the anode 3, enters the particle electrode filling chamber 45 through the water permeable region 4321 of the shell 43 to flood the particle electrode 41 for reaction, and the reacted water is discharged out of the shell 1 from the water outlet 12;
3. when the device runs continuously for 60min, the back flushing function is automatically started, compressed air sequentially enters the coupler body 52, the aeration main pipe 421 and the aeration branch pipe 422 through the air inlet pipe 51, bubbles are released into the back flushing air distribution chamber 46 through the air outlet holes, then the bubbles uniformly back flush the particle electrodes 41 in the particle electrode filling chamber 45 through the air holes 441 of the partition plate 44, and the back flushing time is 3min;
4. when the apparatus is not operated for a long time or the particle electrode 41 needs to be replaced, the connecting piece 47 of the aeration dry tube 421 may be separated from the coupler body 52 in advance, and then the old particle electrode module 4 may be removed from the housing 1 and replaced with a new particle electrode module 4.
The non-mentioned places in the application can be realized by adopting or referring to the prior art.
In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments.
The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and changes may be made to the present application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.
Claims (10)
1. The three-dimensional electrocatalytic oxidation device comprises a shell and an electrocatalytic oxidation system arranged in the shell, wherein the shell is provided with a water inlet and a water outlet, the electrocatalytic oxidation system comprises a cathode, an anode, a particle electrode module and a coupling device, the cathode and the anode are parallel and are arranged opposite to each other, and the particle electrode module is detachably arranged in the shell and is arranged between the cathode and the anode; the particle electrode module comprises a particle electrode, an aeration pipe, a shell and a baffle plate arranged in the shell, wherein the inner cavity of the shell is divided into a particle electrode filling chamber and a back flushing air distribution chamber by the baffle plate, the particle electrode filling chamber is communicated with the inner cavity of the shell, the baffle plate is provided with a ventilation structure for communicating the particle electrode filling chamber with the back flushing air distribution chamber, the particle electrode is arranged in the particle electrode filling chamber, one part of the aeration pipe is arranged in the back flushing air distribution chamber and is provided with an air outlet, the other part of the aeration pipe is positioned at the outer side of the shell and is detachably matched with the coupling device, and the coupling device is used for conveying compressed air into the aeration pipe from outside.
2. The three-dimensional electro-catalytic oxidation device according to claim 1, wherein the particle electrode is prepared by the following method, specifically comprising the following steps:
s1, ball milling vanadium-titanium-iron ore flotation tailings in a ball mill, taking out from the ball mill, washing, soaking, then placing in an oven, and drying at 115 ℃ to prepare dried vanadium-titanium-iron ore for later use; placing the calcareous soil in an oven, and drying at 115 ℃ to prepare dry calcareous soil for later use;
s2, preparing the dried vanadium ilmenite, the dried calcareous soil, the pore-forming agent, the activating agent and the catalyst according to the following weight percentages: 45-60% of dried ferrovanadium ore, 10-20% of calcareous soil, 10-20% of pore-forming agent, 10-20% of activating agent and 1-5% of catalyst; placing the prepared dried vanadium-titanium-iron ore, dried calcareous soil, an activating agent and a catalyst into a ball mill for stirring and grinding, and grinding the size to 60-150 meshes;
s3, taking out the mixed material after stirring and grinding in the ball mill, adding the prepared pore-forming agent, and uniformly stirring to prepare spherical particles of 6-10 mm;
s4, drying the prepared spherical particles in an oven at 115 ℃ for 8-12 hours, heating the dried spherical particles to 130-150 ℃ under the protection of inert gas, performing heat preservation treatment for 0.5-1 hour, heating to 340-360 ℃, continuing heat preservation treatment for 2-4 hours, heating to 1150-1180 ℃, continuing heat preservation treatment for 5-7 hours, and finally naturally cooling to room temperature to obtain the particle electrode.
3. The three-dimensional electro-catalytic oxidation device according to claim 2, wherein,
the pore-forming agent is perlite, starch or polystyrene particles;
and/or the activator comprises at least one of ferric oxide, manganese oxide, zinc oxide and copper oxide;
and/or the catalyst comprises at least one of titanium dioxide, vanadium oxide and cobalt oxide.
4. The three-dimensional electro-catalytic oxidation device according to claim 1, wherein,
the filling volume of the particle electrode in the particle electrode filling chamber is 70% -80% of the volume of the particle electrode filling chamber.
5. The three-dimensional electro-catalytic oxidation device according to claim 1, wherein,
the volume of the particle electrode filling chamber is 60% -80% of the total volume of the inner cavity of the shell.
6. The three-dimensional electro-catalytic oxidation device according to claim 1, wherein,
the inner cavity of the shell is surrounded by a bottom plate and a side plate, the side plate comprises a water permeable area and a sealing area from top to bottom, the partition board is transversely arranged between the water permeable area and the sealing area, the water permeable area and the partition board enclose the particle electrode filling chamber, the water permeable area is provided with a plurality of uniformly distributed water permeable meshes, the diameter of each water permeable mesh is smaller than that of each particle electrode, and the sealing area, the partition board and the bottom plate enclose the backwash air distribution chamber.
7. The three-dimensional electro-catalytic oxidation device according to claim 1, wherein,
the ventilation structure comprises a plurality of ventilation holes which are uniformly distributed in the partition board, and the diameter of each ventilation hole is smaller than that of the particle electrode.
8. The three-dimensional electro-catalytic oxidation device according to claim 1, wherein,
the aeration pipe comprises an aeration main pipe and an aeration branch pipe, one part of the aeration main pipe is arranged in the back flush air distribution chamber, the other part of the aeration main pipe is positioned at the outer side of the shell and is detachably matched with the coupling device, the aeration branch pipe is arranged in the back flush air distribution chamber, a plurality of aeration branch pipes are arranged at intervals along the axial direction of the aeration main pipe and are communicated with the aeration main pipe, and a plurality of air outlets are arranged at intervals along the axial direction of the aeration branch pipe.
9. The three-dimensional electro-catalytic oxidation device according to claim 8, wherein,
the end of the aeration main pipe, which is positioned outside the shell, is provided with a connecting sheet, and the aeration main pipe is attached to the coupling device through the connecting sheet.
10. The three-dimensional electro-catalytic oxidation device according to claim 1, wherein,
the coupling device comprises a coupler body with an air inlet pipe and a guide rod connected with the coupler body, wherein the shell is provided with a guide part extending outwards, the guide part is provided with a limiting ring, and the limiting ring can be sleeved on the guide rod so as to be installed in or taken out from the shell under the guiding action of the guide rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410118378.5A CN117756237A (en) | 2024-01-26 | 2024-01-26 | Three-dimensional electrocatalytic oxidation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410118378.5A CN117756237A (en) | 2024-01-26 | 2024-01-26 | Three-dimensional electrocatalytic oxidation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117756237A true CN117756237A (en) | 2024-03-26 |
Family
ID=90314612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410118378.5A Pending CN117756237A (en) | 2024-01-26 | 2024-01-26 | Three-dimensional electrocatalytic oxidation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117756237A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110189589A1 (en) * | 2010-01-29 | 2011-08-04 | The Johns Hopkins University | Composite porous catalysts |
| CN105621543A (en) * | 2016-01-14 | 2016-06-01 | 济南大学 | Electrocatalytic particle electrode for efficiently degrading bezafibrate in wastewater and preparation method thereof |
| CN207404925U (en) * | 2017-10-12 | 2018-05-25 | 新疆华峰环保工程有限公司 | Aerating filling case |
| CN114014411A (en) * | 2021-11-08 | 2022-02-08 | 广州桑尼环保科技有限公司 | High-activity three-dimensional particle electrode material for treating spraying wastewater and preparation method thereof |
| CN215855270U (en) * | 2021-09-15 | 2022-02-18 | 湖南新锋先进材料科技有限公司 | Electrochemical oxidation degradation equipment for wastewater |
| CN216638996U (en) * | 2021-11-08 | 2022-05-31 | 中机国际工程设计研究院有限责任公司 | Modular particle electrode |
| CN114873695A (en) * | 2022-06-20 | 2022-08-09 | 南京启沃生态科技有限公司 | Novel three-dimensional particle electrode electrocatalytic oxidation device |
| WO2023193062A1 (en) * | 2022-04-06 | 2023-10-12 | Commonwealth Scientific And Industrial Research Organisation | Electrode compositions |
-
2024
- 2024-01-26 CN CN202410118378.5A patent/CN117756237A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110189589A1 (en) * | 2010-01-29 | 2011-08-04 | The Johns Hopkins University | Composite porous catalysts |
| CN105621543A (en) * | 2016-01-14 | 2016-06-01 | 济南大学 | Electrocatalytic particle electrode for efficiently degrading bezafibrate in wastewater and preparation method thereof |
| CN207404925U (en) * | 2017-10-12 | 2018-05-25 | 新疆华峰环保工程有限公司 | Aerating filling case |
| CN215855270U (en) * | 2021-09-15 | 2022-02-18 | 湖南新锋先进材料科技有限公司 | Electrochemical oxidation degradation equipment for wastewater |
| CN114014411A (en) * | 2021-11-08 | 2022-02-08 | 广州桑尼环保科技有限公司 | High-activity three-dimensional particle electrode material for treating spraying wastewater and preparation method thereof |
| CN216638996U (en) * | 2021-11-08 | 2022-05-31 | 中机国际工程设计研究院有限责任公司 | Modular particle electrode |
| WO2023193062A1 (en) * | 2022-04-06 | 2023-10-12 | Commonwealth Scientific And Industrial Research Organisation | Electrode compositions |
| CN114873695A (en) * | 2022-06-20 | 2022-08-09 | 南京启沃生态科技有限公司 | Novel three-dimensional particle electrode electrocatalytic oxidation device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108479784B (en) | Double-carrier ozone catalyst and modularized catalytic oxidation wastewater treatment device | |
| CN101077801B (en) | Fluid bed three-dimensional electrode reactor for treating organic waste water | |
| US20220274857A1 (en) | Device for advanced degradation of organic wastewater and application thereof | |
| CN104118931B (en) | A kind of electricity biological coupling water cleaning systems and process for purifying water | |
| CN202054694U (en) | Ozone strong oxidizing internal electrolysis reactor | |
| CN107098444B (en) | Novel electric flocculation device and electric flocculation method | |
| CN108585379A (en) | A kind of apparatus and method improving organic wastewater with difficult degradation thereby treatment effect | |
| CN109336226A (en) | A kind of rotation electrode reactor and organic stain disease processing method | |
| CN207861965U (en) | A kind of multistage out-phase three-dimensional electrochemical reaction unit for waste water treatment | |
| CN107180988B (en) | Microbial fuel cell and sewage treatment device | |
| CN117756237A (en) | Three-dimensional electrocatalytic oxidation device | |
| CN104628134A (en) | Up-flow electrochemical biofilm reactor | |
| CN112374663A (en) | System and method for treating organic wastewater by three-dimensional electrocatalytic oxidation of liquid-solid fluidized bed | |
| CN209322529U (en) | A kind of organic sewage and waste water treatment device of rotary-type electrode of cylinder | |
| CN108996810B (en) | High-concentration degradation-resistant organic wastewater zero discharge system and treatment method | |
| CN114133101B (en) | Kitchen garbage effluent disposal system | |
| CN114133100B (en) | Organic wastewater treatment system | |
| CN113943082B (en) | Kitchen waste wastewater treatment system | |
| CN114873695A (en) | Novel three-dimensional particle electrode electrocatalytic oxidation device | |
| CN210825564U (en) | Electrochemical air-float treatment device for water treatment | |
| CN200967766Y (en) | Three-dimensional three-phase electrochemical reactor for sewage treatment | |
| CN107935126B (en) | Up-flow three-dimensional electro-catalytic device | |
| CN107176728B (en) | Device for treating sewage by electrochemical oxidation method and method for treating sewage by using device | |
| CN217265264U (en) | Electrocatalysis device for treating coking wastewater | |
| CN213112639U (en) | Catalytic reduction filler and catalytic reduction reactor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |