CN113149151A - Electrochemistry sewage treatment device - Google Patents
Electrochemistry sewage treatment device Download PDFInfo
- Publication number
- CN113149151A CN113149151A CN202110484735.6A CN202110484735A CN113149151A CN 113149151 A CN113149151 A CN 113149151A CN 202110484735 A CN202110484735 A CN 202110484735A CN 113149151 A CN113149151 A CN 113149151A
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- China
- Prior art keywords
- cathode
- anode
- electrolytic
- plant according
- wastewater treatment
- 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
- 239000010865 sewage Substances 0.000 title claims abstract description 19
- 230000005518 electrochemistry Effects 0.000 title claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 238000005192 partition Methods 0.000 claims description 9
- 238000005868 electrolysis reaction Methods 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 6
- 229910002804 graphite Inorganic materials 0.000 claims description 6
- 239000010439 graphite Substances 0.000 claims description 6
- 239000010936 titanium Substances 0.000 claims description 6
- 229910052719 titanium Inorganic materials 0.000 claims description 6
- 230000000712 assembly Effects 0.000 claims description 5
- 238000000429 assembly Methods 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 229910044991 metal oxide Inorganic materials 0.000 claims description 5
- 150000004706 metal oxides Chemical class 0.000 claims description 5
- 230000003197 catalytic effect Effects 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 4
- 229910000570 Cupronickel Inorganic materials 0.000 claims description 3
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 239000011787 zinc oxide Substances 0.000 claims description 3
- 235000014692 zinc oxide Nutrition 0.000 claims description 3
- 238000004065 wastewater treatment Methods 0.000 claims 8
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000005273 aeration Methods 0.000 description 10
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000149 chemical water pollutant Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000010806 kitchen waste Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Images
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
- 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
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46109—Electrodes
- C02F2001/46152—Electrodes characterised by the shape or form
- C02F2001/46171—Cylindrical or tubular shaped
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The invention relates to the field of sewage treatment, and discloses electrochemical sewage treatment equipment, which comprises an electrolytic cell and an electrode assembly, wherein the electrode assembly is arranged in the electrolytic cell and is connected with a power supply; the electrode assembly comprises an inner cathode, an anode sleeved outside the inner cathode, and an outer cathode sleeved outside the anode; the inner cathode, the anode and the outer cathode are all cylindrical; the interelectrode voltage can be reduced, and the electric energy loss can be reduced; the assembly and the maintenance are convenient.
Description
Technical Field
The invention relates to the field of sewage treatment, in particular to electrochemical sewage treatment equipment.
Background
The sewage such as kitchen waste water, landfill leachate and the like has high COD concentration, ammonia nitrogen content and salt content. Under the influence of conditions such as temperature, salt content and the like, the sewage treatment facility often has the phenomenon of over standard drainage. The electrochemical treatment equipment can effectively reduce the content of ammonia nitrogen and COD in the sewage, reduce the load in the subsequent biochemical treatment process and improve the biodegradability of the sewage, and can also be used as tail water treatment equipment for treating overproof ammonia nitrogen, COD and the like in the produced water of biochemical facilities.
However, the anode of the electrochemical device needs to be thermally coated or electroplated with a metal oxide with catalytic performance to remove ammonia nitrogen and COD, but the large-size plate-shaped electrode is deformed due to the thermal effect, external force action and the like in the coating process. Because the metal coating layer is generally made of metal oxide and is brittle, the electrode cannot be corrected by external force after being formed, otherwise, the coating can fall off. If a conventional flat electrode is adopted, a larger electrode spacing is required to be reserved between the cathode plate and the anode plate so as to prevent the electrode from being short-circuited due to the deformation of the electrode plate; however, this causes an increase in voltage between the electrodes and an increase in electrical loss of the device. If the anode is made of graphite material, the large-size plate-shaped material with thin thickness is easy to break, and the cylindrical structure is firmer.
Disclosure of Invention
In order to solve the technical problem, the invention provides electrochemical sewage treatment equipment.
In order to solve the technical problems, the invention adopts the following technical scheme:
an electrochemical sewage treatment apparatus includes an electrolytic bath, and an electrode assembly disposed in the electrolytic bath and connected to a power supply; the electrode assemblies are all cylindrical.
Further, the electrode assembly includes an inner cathode, an anode fitted around the outside of the inner cathode, and an outer cathode fitted around the outside of the anode.
Furthermore, the lower ends of the inner cathode and the outer cathode are both protruded out of the lower end of the anode for a certain distance.
Further, the device comprises a conductive screw; the lower end of the inner cathode and the lower end of the outer cathode are both provided with bottom fixing screw holes, and the conductive screw rod is fixedly connected with the bottom fixing screw holes of the inner cathode and the bottom fixing screw holes of the outer cathode.
Further, the anode is made of graphite or titanium metal or ceramic coated with a catalytic metal oxide coating; the inner cathode and the outer cathode are made of titanium metal, stainless steel, graphite or zinc white copper.
Further, the inner cathode and the anode, and the anode and the outer cathode are fixed and insulated from each other through plastic bolts or plastic collars.
Furthermore, a clapboard is vertically and fixedly arranged in the electrolytic cell; the clapboard divides the electrolytic cell into more than two electrolytic chambers; and overflow holes communicated with two adjacent electrolysis chambers are formed in one side of the partition plate, and the overflow holes in the two adjacent partition plates are positioned on different sides of the partition plate.
Further, the device also comprises a cover plate component buckled at the upper part of the electrolytic bath; the bottom of the electrolytic chamber is provided with a fixed clamping seat; the cover plate assembly comprises a cover plate corresponding to the electrolytic chamber, and a conductive rod clamping groove and a conductive screw clamping groove are formed in the cover plate; the lower part of an inner cathode in the electrode assembly is sleeved outside the fixed clamping seat; the upper part of the outer cathode is provided with a cathode conductive screw connected with a power supply, and the upper part of the anode is provided with an anode conductive rod connected with the power supply; the cathode conductive screw is arranged in the conductive screw clamping groove, and the anode conductive rod is arranged in the conductive rod clamping groove.
Further comprises a water inlet pipe arranged at the lower part of one side of the electrolytic bath, a water discharge pipe and an exhaust pipe arranged at the upper part of the other side of the electrolytic bath.
In a special case, each electrolytic chamber can be independently made into a cylinder, and a group of electrode assemblies are assembled in each electrolytic cylinder. The bottom of each electrolytic cylinder is provided with a water inlet pipe, and the upper part of each electrolytic cylinder is provided with a water outlet pipe and an exhaust pipe. The water inlet pipes at the bottoms of the electrolytic cylinders are connected in parallel, and the water outlet pipe at the upper part and the exhaust pipe are also connected in parallel. A plurality of electrolytic cylinders are connected in parallel or in series to form a large electrolytic device, and the principle is the same as the above.
Compared with the prior art, the invention has the beneficial technical effects that:
1. the electrode adopts the cylindrical electrode assembly, and the cylindrical electrode assembly has higher deformation resistance, so that the length of the electrode can be about 1.2 meters, the electrode distance of the electrode assembly can be smaller and can be generally controlled within the range of 0.5 cm-1.5 cm, the inter-electrode voltage is reduced, and the electric energy loss is reduced.
2. The structure of the double cathode can improve the effective use area of the anode, improve the surface area ratio of the electrolysis device and improve the treatment efficiency of the equipment.
3. The lower part of the cylindrical electrode assembly is sleeved outside the fixing clamping seat to realize the fixation of the lower part of the electrode assembly, the conductive screw clamp and the conductive rod on the upper part of the electrode assembly are respectively clamped in the clamping grooves arranged on the cover plate to realize the fixation of the upper part of the electrode assembly, and the structure is convenient for the installation, the disassembly and the maintenance of the electrode assembly.
Drawings
FIG. 1 is a schematic structural view of the present invention as a whole;
FIG. 2 is a top view of the present invention;
FIG. 3 is a schematic view of the cover plate assembly of the present invention;
FIG. 4 is a schematic structural view of an outer cathode according to the present invention;
FIG. 5 is a schematic structural view of an anode according to the present invention.
In the figure: 1. an electrolytic cell; 11. a partition plate; 111. an overflow aperture; 12. an electrolysis chamber; 13. a drain pipe; 14. an exhaust pipe; 15. a water inlet pipe; 16. fixing the card holder; 2. a cover plate assembly; 21. a cover plate; 31. an outer cathode; 32. an anode; 41. an aeration pipe; 42. an air inlet pipe.
Detailed Description
A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.
The device comprises an electrode assembly, an electrolytic bath, an aeration stirring system, a water supply and drainage system, an exhaust system and a power supply.
As shown in fig. 4 and 5, the electrode assembly includes an inner cathode, an outer cathode, and an anode, each of which has a cylindrical shape. The anode is sleeved between the inner cathode and the outer cathode; the anode is made of graphite or titanium metal or ceramic coated with a catalytic metal oxide coating; the inner cathode and the outer cathode are made of titanium metal, stainless steel, graphite and zinc white copper.
The upper part, the middle part and the lower part of the inner cathode, the outer cathode and the anode are respectively provided with two opposite fixing screw holes, the fixing screw holes are symmetrically distributed on two sides of the vertical section of the center of the cylinder, and the connecting line of the centers of the two fixing screw holes on the upper part, the connecting line of the centers of the two fixing screw holes on the middle part and the connecting line of the two fixing screw holes on the lower part are all parallel.
Plastic bolts penetrate through the upper fixing screw holes and the middle fixing screw holes to realize the relative fixation of the cathode and the anode, and the insulation separation of the cathode and the anode is realized through the spacing action of the plastic bolts; the fixation and insulating separation of the cathode and the anode can also be realized by arranging plastic lantern rings inside and outside the anode.
After the electrode assembly is assembled, the bottoms of the outer cathode and the inner cathode are protruded by one section than the bottom end of the anode; when the conductive screw penetrates through the bottom fixing screw hole, the conductive screw does not penetrate through the anode any more, and the inner cathode is connected with the outer cathode through the conductive screw, so that the conductive connection between the inner cathode and the outer cathode is realized; in addition, the bottom parts of the inner cathode and the outer cathode can be electrically connected in a welding mode. The upper part of the outer cathode is welded with a cathode conductive screw.
The anode is also cylindrical, the top of the anode is provided with an anode conducting rod, and the anode conducting rod is connected with the anode through a conducting ring. The conductive plate is connected with the anode and the anode conductive rod in a welding mode.
The length of the traditional electrode plate is generally not more than 50 cm, and the distance between the electrode plates is generally not less than 1.5 cm. If the conventional plate-shaped electrode assembly is adopted for sewage treatment, the treatment tank monomer cannot have enough height, so that the occupied area is too large. If several groups of treatment tank monomers are vertically stacked together, the requirements on the tightness and the tank wall strength of the tank monomers are greatly improved; meanwhile, the complexity of a water supply and drainage system and a power supply system is greatly improved, and the water supply and drainage system is difficult to apply in the actual treatment process.
As shown in figures 1-3, the electrolytic cell of the present invention is divided into more than two electrolytic chambers by separators, and the separators are adhered or welded to the inner wall of the electrolytic cell. One side of the clapboard is provided with a row of overflow holes, and the number of the overflow holes is more than 1. If more than three electrolysis chambers are provided, the overflow holes on two adjacent partition plates are not on the same side, so that the water flow circularly flows between the partition plates, and the short flow of sewage is prevented.
The central part of the bottom of each electrolytic chamber is transversely provided with a bearing pipe fitting, a plurality of fixed clamping seats are uniformly distributed on the bearing pipe fitting, the opening end of each fixed clamping seat is vertically upwards, the diameter of a cylinder of the fixed clamping seat is slightly smaller than the inner diameter of an inner cathode, and the bottom of an electrode assembly is conveniently sleeved outside the fixed clamping seats. The number of the fixing clamping seats is the same as that of the electrode assemblies placed in the electrolytic cell.
The fixed clamping seat is welded or bonded on the bearing pipe fitting, and the bearing pipe fitting is welded or bonded on the bottom plate of the electrolytic bath. Be provided with the aeration pipe in the electrolysis chamber, the aeration pipe is located electrolysis chamber bottom, by the bearing pipe fitting, is provided with the aeration hole on the aeration pipe, and the aeration pipe passes through the intake pipe and is connected with the outside air feeder of box. Under the special condition, the intake pipe also can directly be connected with the bearing pipe fitting, opens a plurality of aeration holes at the bearing pipe fitting lateral wall, makes the bearing pipe fitting have the aeration function concurrently.
The upper part of the electrolytic cell is provided with a cover plate component, and the cover plate component is formed by combining more than 2 cover plates. The middle part of the cover plate is provided with a conductive rod clamping groove and a conductive screw clamping groove.
When the electrode assembly is used, the bottom of the inner cathode in the electrode assembly is sleeved on the clamping seat, so that the bottom position is fixed; when the cover plate components are combined together, the conductive rod clamping grooves and the conductive screw rod clamping grooves just clamp the cathode conductive screw rods and the anode conductive rods of the electrode components protruding out of the cover plate, so that the upper parts of the electrodes are fixed, and the electrode components stand in the electrolytic bath.
The bottom of the electrolytic tank is provided with a water inlet pipe, and the upper part of the electrolytic tank is provided with a water outlet pipe and an exhaust pipe.
The working method of the invention is as follows:
sewage enters the electrolytic cell from the water inlet pipe, flows in an S shape in the electrolytic cell under the action of the partition plate, and submerges the electrode assembly; the positive electrode and the negative electrode of the power supply are respectively connected with the anode conductive rod and the cathode conductive screw through leads to supply power to the electrode assembly; starting an aeration system and an exhaust system; the sewage is fully contacted with the surface of each electrode, stays for a proper time and then overflows from a drainage pipe.
The sewage is acted by the electrode assembly to remove some pollutants; a plurality of electrode assemblies can be placed in each electrolytic chamber, and a plurality of electrolytic tanks can be used in parallel or in series combination, so that the sewage treatment on a large scale is realized.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (9)
1. An electrochemistry sewage treatment device which is characterized in that: comprises an electrolytic bath and an electrode assembly which is arranged in the electrolytic bath and is connected with a power supply; the electrode assemblies are all cylindrical.
2. The electrochemical wastewater treatment plant according to claim 1, wherein: the electrode assembly includes an inner cathode, an anode nested outside the inner cathode, and an outer cathode nested outside the anode.
3. The electrochemical wastewater treatment plant according to claim 2, wherein: the lower ends of the inner cathode and the outer cathode are both protruded out of the lower end of the anode for a certain distance.
4. The electrochemical wastewater treatment plant according to claim 2, wherein: comprises a conductive screw; the lower end of the inner cathode and the lower end of the outer cathode are both provided with bottom fixing screw holes, and the conductive screw rod is fixedly connected with the bottom fixing screw holes of the inner cathode and the bottom fixing screw holes of the outer cathode.
5. The electrochemical wastewater treatment plant according to claim 2, wherein: the anode is made of graphite or titanium metal or ceramic coated with a catalytic metal oxide coating; the inner cathode and the outer cathode are made of titanium metal, stainless steel, graphite or zinc white copper.
6. The electrochemical wastewater treatment plant according to claim 2, wherein: the inner cathode and the anode, and the anode and the outer cathode are fixed and insulated by plastic bolts or plastic lantern rings.
7. The electrochemical wastewater treatment plant according to claim 2, wherein: a partition board is vertically and fixedly arranged in the electrolytic cell; the clapboard divides the electrolytic cell into more than two electrolytic chambers; and one side of the partition plate is provided with an overflow hole for communicating two adjacent electrolysis chambers.
8. The electrochemical wastewater treatment plant according to claim 7, wherein: also comprises a cover plate component buckled at the upper part of the electrolytic bath; the bottom of the electrolytic chamber is provided with a fixed clamping seat; the cover plate assembly comprises a cover plate corresponding to the electrolytic chamber, and a conductive rod clamping groove and a conductive screw clamping groove are formed in the cover plate; the lower part of an inner cathode in the electrode assembly is sleeved outside the fixed clamping seat; the upper part of the outer cathode is provided with a cathode conductive screw connected with a power supply, and the upper part of the anode is provided with an anode conductive rod connected with the power supply; the cathode conductive screw is arranged in the conductive screw clamping groove, and the anode conductive rod is arranged in the conductive rod clamping groove.
9. The electrochemical wastewater treatment plant according to claim 1, characterized in that: comprises a water inlet pipe arranged at the lower part of one side of the electrolytic bath, and a water drain pipe and an exhaust pipe arranged at the upper part of the other side of the electrolytic bath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110484735.6A CN113149151A (en) | 2021-04-30 | 2021-04-30 | Electrochemistry sewage treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110484735.6A CN113149151A (en) | 2021-04-30 | 2021-04-30 | Electrochemistry sewage treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113149151A true CN113149151A (en) | 2021-07-23 |
Family
ID=76873143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110484735.6A Pending CN113149151A (en) | 2021-04-30 | 2021-04-30 | Electrochemistry sewage treatment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113149151A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH23114A (en) * | 1900-11-21 | 1902-05-31 | Graf Schwerin Botho | Apparatus for electro-osmotic drainage, respectively. Juice extraction of mineral, vegetable and animal substances |
| US20020005361A1 (en) * | 2000-06-06 | 2002-01-17 | Omega Co., Ltd. | Electrolyzer |
| CN110304697A (en) * | 2019-07-01 | 2019-10-08 | 河北丰源环保科技股份有限公司 | Three level segment electrochemistry sewage disposal device of twin cathode |
-
2021
- 2021-04-30 CN CN202110484735.6A patent/CN113149151A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH23114A (en) * | 1900-11-21 | 1902-05-31 | Graf Schwerin Botho | Apparatus for electro-osmotic drainage, respectively. Juice extraction of mineral, vegetable and animal substances |
| US20020005361A1 (en) * | 2000-06-06 | 2002-01-17 | Omega Co., Ltd. | Electrolyzer |
| CN110304697A (en) * | 2019-07-01 | 2019-10-08 | 河北丰源环保科技股份有限公司 | Three level segment electrochemistry sewage disposal device of twin cathode |
Non-Patent Citations (1)
| Title |
|---|
| 本书编委会, 中国计划出版社 * |
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Application publication date: 20210723 |