CN210825560U - Electrochemical closed oxidation device and wastewater treatment system with same - Google Patents
Electrochemical closed oxidation device and wastewater treatment system with same Download PDFInfo
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- CN210825560U CN210825560U CN201921390063.7U CN201921390063U CN210825560U CN 210825560 U CN210825560 U CN 210825560U CN 201921390063 U CN201921390063 U CN 201921390063U CN 210825560 U CN210825560 U CN 210825560U
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Abstract
The utility model discloses an airtight oxidation unit of electrochemistry and have its effluent disposal system, the device includes: the first cover plate is provided with a water inlet nozzle; the second cover plate is opposite to the first cover plate and is arranged at intervals, and a water outlet nozzle is arranged on the second cover plate; the first electrode plate is provided with a first hole area; a gasket is arranged between the second electrode plate and the first electrode plate, the second electrode plate and the second electrode plate are alternately arranged between the first cover plate and the second cover plate, a second hole area is formed on the second electrode plate, the first hole area and the second hole area jointly define an electrolysis channel, and the electrolysis channel is communicated with the water inlet nozzle and the water outlet nozzle; and the power supply is electrically connected with the first electrode plate and the second electrode plate. By adopting the device, COD in the wastewater can be effectively reduced, meanwhile, the occupied area is small, the device can be directly installed on a pipeline, and the manufacturing cost is low.
Description
Technical Field
The utility model belongs to the waste water treatment field, concretely relates to airtight oxidation unit of electrochemistry and have its effluent disposal system.
Background
The existing methods for reducing COD in wastewater in the colored industry comprise a chemical coagulation method, an ozone oxidation method and an electrochemical method, wherein the chemical coagulation method is a method for reducing COD by adding a coagulant and a flocculant to form physical sedimentation, can effectively remove various high-molecular organic matters in water, has simple equipment, easy maintenance and operation and good treatment effect, but has high operation cost and large slag yield; the ozone oxidation method is to sterilize the pollutants in the wastewater through ozone oxidation, because ozone has strong oxidizing ability, the reaction is rapid, the flow is simple, and the problem of secondary pollution is avoided. But the power consumption for producing ozone is high, and the cost is high; the electrochemical method is to generate chemical reaction by a battery, utilize the difference of metallicity between a cathode and an anode to generate potential difference, enable electrons to generate directional flow, generate current, and remove pollutants in water or convert toxic substances into non-toxic and less-toxic substances by utilizing the principle of electrolysis, but the existing electrochemical equipment has large occupied area and high manufacturing cost.
Therefore, the existing equipment for treating COD in wastewater is in need of further improvement.
SUMMERY OF THE UTILITY MODEL
The present invention aims at solving at least one of the technical problems in the related art to a certain extent. Therefore, an object of the utility model is to provide an airtight oxidation unit of electrochemistry and have its effluent disposal system, adopt the device can effectively reduce the COD in the waste water, and area is little simultaneously, on the pipeline that can the direct mount, the cost is low.
In one aspect of the present invention, the present invention provides an electrochemical closed oxidation apparatus. According to the utility model discloses an embodiment, the device includes:
the water inlet nozzle is arranged on the first cover plate;
the second cover plate is opposite to the first cover plate and arranged at intervals, and a water outlet nozzle is arranged on the second cover plate;
the first electrode plate is provided with a first hole area;
a gasket is arranged between the second electrode plate and the first electrode plate, the first electrode plate and the second electrode plate are alternately arranged between the first cover plate and the second cover plate, a second hole area is formed on the second electrode plate, the first hole area and the second hole area jointly define an electrolysis channel, and the electrolysis channel is communicated with the water inlet nozzle and the water outlet nozzle;
a power source electrically connected to the first electrode plate and the second electrode plate.
According to the utility model discloses airtight oxidation unit of electrochemistry arranges through the second plate electrode that adopts the first plate electrode that has first trompil and have the second trompil in turn, and electrolysis passageway is injectd jointly to first trompil and second trompil, first plate electrode and second plate electrode periphery set up with fixed first apron and the second of the two, and the water injection well choke intercommunication on electrolysis passageway and the first water injection well choke of intaking on the apron and the second apron, even get the waste water that gets into through the water injection well choke on the second apron again behind the electrolysis passageway on the first apron, and waste water is when the electrolytic passageway of flow-through, take place electrolysis catalytic oxidation between adjacent first plate electrode and the second plate electrode, thereby effectively get rid of the COD in the waste water. From this, adopt the device can effectively reduce the COD in the waste water, area is little simultaneously, and further can be with the device direct mount's pipeline on, the cost is low.
In addition, the electrochemical closed oxidation device according to the above embodiment of the present invention may further have the following additional technical features:
optionally, the first cover sheet and the second cover sheet are PVC cover sheets or metal cover sheets.
Optionally, the first electrode plate comprises a first circular electrolysis portion and a first electrode lug portion which are connected, and the first hole region is arranged in the center of the first circular electrolysis portion.
Optionally, the second electrode plate comprises a second circular electrolytic portion and a second electrode lug portion which are connected, and the second hole region is arranged in the center of the second circular electrolytic portion.
Optionally, the first pole ear portion and the second pole ear portion are provided on one side or both sides of the electrolysis channel.
Optionally, the gasket mates with the first circular electrolytic portion or the second circular electrolytic portion.
Optionally, the first electrode plate and the second electrode plate are made of stainless steel, titanium, copper or titanium-plated noble metal or coated with a catalyst on the surface, respectively. Thereby, COD in the wastewater can be effectively reduced.
Optionally, the power supply is a dc commutating power supply, and a positive electrode of the dc commutating power supply is periodically electrically connected to one of the first and second electrode plates, and a negative electrode of the dc commutating power supply is periodically electrically connected to the other of the first and second electrode plates. This can maintain the electrode activity and reduce the cell voltage.
Optionally, the above apparatus further comprises a fastening bolt connecting the first cover plate and the second cover plate.
In another aspect of the present invention, the utility model provides a wastewater treatment system. According to the embodiment of the utility model, the wastewater treatment system is provided with the electrochemical closed oxidation device. Therefore, by adopting the wastewater treatment system in the system, COD in wastewater can be effectively removed, the operation is flexible, the occupied area is small, and the manufacturing cost is low.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic cross-sectional view of an electrochemical closed oxidation apparatus according to one embodiment of the present invention;
fig. 2 is a schematic structural view of a first electrode plate on an electrochemically closed oxidation unit according to one embodiment of the present invention;
fig. 3 is a schematic structural view of a first electrode plate on an electrochemically closed oxidation unit according to one embodiment of the present invention;
fig. 4 is a schematic structural view of a gasket between a first electrode plate and a second electrode plate on an electrochemically enclosed oxidation unit according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In one aspect of the present invention, the present invention provides an electrochemical closed oxidation apparatus. According to an embodiment of the present invention, referring to fig. 1-4, the device comprises: a first cover plate 100, a second cover plate 200, a first electrode plate 300, a second electrode plate 400, and a power supply 500.
According to the utility model discloses an embodiment is equipped with into water injection well choke 11 on the first apron 100, and is preferred, and into water injection well choke 11 is established at the center of first apron 100 to first apron 100 can be PVC apron or metal covering board, can select according to actual need to this technical personnel in the field.
According to the utility model discloses an embodiment, second apron 200 and first apron 100 are relative and interval arrangement, and be equipped with out water injection well choke 21 on the second apron 200, preferably, it establishes at the center of second apron 200 to go out water injection well choke 21, and first apron 100 and second apron 200 parallel arrangement, more preferably, water injection well choke 11 corresponds with play water injection well choke 21 position, it sets up for regional symmetry between first apron 100 and the second apron 200 to go into water injection well choke 11 and play water injection well choke 21 promptly, and second apron 200 can be PVC apron or metal covering board, to this technical personnel in the field can select according to actual need.
According to the embodiment of the present invention, the first electrode plate 300 is formed with the first hole area 31, and specifically, the first hole area 31 may be a mesh or porous to ensure that the wastewater entering through the water inlet nozzle 11 flows through. According to an embodiment of the present invention, referring to fig. 2, the first electrode plate 300 includes a first circular electrolytic portion 32 and a first pole ear portion 33 connected to each other, the first hole area 31 is disposed at the center of the first circular electrolytic portion 32, and further, the first electrode plate 300 is made of stainless steel, titanium, copper or titanium plated with noble metal or is surface coated with catalyst. The catalyst may be any substance that does not participate in the reaction, such as lead dioxide, nickel oxide, or titanium oxide.
According to the embodiment of the utility model, be equipped with gasket 41 between second electrode board 400 and the first electrode board 300 and second electrode board 400 and first electrode board 300 and set up in turn between first apron 100 and second apron 200, form second orifice region 42 on the second electrode board 400 to first orifice region 42 and second orifice region 41 are injectd electrolysis passageway 40 jointly, and electrolysis passageway 40 communicates with water inlet water injection well choke 11 and water outlet water injection well choke 21. Specifically, the first cover plate 100 and the second cover plate 200 are provided with a plurality of first electrode plates 300 and a plurality of second electrode plates 400, the first electrode plates 300 and the second electrode plates 400 are alternately arranged, and a spacer 41 is arranged between the connected first electrode plates 300 and the second electrode plates 400. Like the first electrode plate 300, the second hole area 42 of the second electrode plate 400 may be a net or porous to ensure that the wastewater entering through the inlet nozzle 11 passes through. According to an embodiment of the present invention, referring to fig. 3, in the same way as the first electrode plate 300, the second electrode plate 400 includes the second circular electrolytic portion 43 and the second pole ear portion 44 connected to each other, the second hole area 42 is disposed at the center of the second circular electrolytic portion 43, and further, the second electrode plate 400 is made of stainless steel, titanium, copper or titanium plated with noble metal or coated with catalyst. The catalyst may be any substance that does not participate in the reaction, such as lead dioxide, nickel oxide, or titanium oxide. Preferably, the first electrode plate 300 and the second electrode plate 400 have the same structure, that is, the first hole area 31 on the first electrode plate 300 and the second hole area 42 on the second electrode plate 400 have the same size, and the first hole area 31 on the first electrode plate 300 and the second hole area 42 on the second electrode plate 400 correspondingly form the electrolysis channel 40, when the wastewater enters the electrolysis channel 40 through the water inlet nozzle 11 and flows through the electrolysis channel 40, the electrolysis catalytic oxidation occurs between the adjacent first electrode plate 300 and second electrode plate 400, so as to effectively remove the COD in the wastewater, and the wastewater without the COD is discharged through the water outlet nozzle 21.
Further, referring to fig. 4, the gasket 41 is matched with the first circular electrolytic portion 32 or the second circular electrolytic portion 43, that is, the middle of the gasket 41 is provided with an opening 45 corresponding to the first hole area 31 and the second hole area 32, so as to insulate, space and seal the adjacent first electrode plate 300 and the adjacent second electrode plate 400, and the gasket is made of an insulating material conventionally used in the prior art, and a sealing material is provided between the first electrode plate 300 or the second electrode plate 400 adjacent to the first cover plate 100 and the first cover plate 100, and a sealing material is also provided between the first electrode plate 300 or the second electrode plate 400 adjacent to the second cover plate 200 and the second cover plate 200, so as to ensure the sealing performance of the device.
Further, referring to fig. 1, in order to fix the first electrode plate 300 and the second electrode plate 400, the first cover plate 100 and the second cover plate 200 are connected using the fastening bolt 46, and the fastening bolt 46 may be plural, so that the first electrode plate 300 and the second electrode plate 400 are fixed therebetween by fixing the first cover plate 100 and the second cover plate 200.
Further, a first pole lug part 33 and a second pole lug part 44 are provided on one side or both sides of the electrolytic cell 40, and preferably, referring to fig. 1, the first pole lug part 33 and the second pole lug part 44 are provided on both sides of the electrolytic cell 40, respectively.
According to the utility model discloses an embodiment, power 500 is connected with first electrode board 300 and second electrode board 400 electricity to the messenger carries out electrolysis catalytic oxidation to the waste water of through-flow electrolysis passageway 40 under the power supply effect, thereby gets rid of the COD in the waste water.
According to a specific embodiment of the present invention, the power source 500 is a dc commutating power source, the positive electrode 51 and the negative electrode 52 of which are periodically switched, and the positive electrode 51 is periodically electrically connected to one of the first electrode plate 300 and the second electrode plate 400, and the negative electrode 52 is periodically electrically connected to the other of the first electrode plate 300 and the second electrode plate 400. Specifically, the anode 51 of the power supply 500 is electrically connected to the first electrode plate 300, the cathode 52 of the power supply 500 is electrically connected to the second electrode plate 400, during electrolysis, oxygen generated by the first electrode plate connected to the anode of the power supply can oxidize organic matters in wastewater to generate water and carbon dioxide, the second electrode plate connected to the cathode generates hydrogen, when a direction change is required (specifically, the direction change can be adjusted according to the wastewater quality, for example, 5-90 min), the anode 51 and the cathode 52 of the power supply 500 are switched to electrically connect the anode 51 of the power supply 500 to the second electrode plate 400, the cathode 52 of the power supply 500 is electrically connected to the first electrode plate 300, the first electrode plate connected to the cathode of the power supply generates hydrogen, the bubbles can clean the organic matters and other impurities adhered to the first electrode plate, and the second electrode plate connected to the anode of the power supply generates oxygen to oxidize the organic matters in the wastewater, this is repeated alternately.
It should be noted that the wastewater in the present application may be wastewater with high COD caused by organic matters, even garbage leachate, domestic sewage, organic industrial wastewater, and the like. And areAnd in the electrolytic process, the current density is 50-300A/m2The processing capacity is 0.5-5m3/m2And h, the power supply commutation period is 5-30 min.
According to the utility model discloses airtight oxidation unit of electrochemistry arranges through the second plate electrode that adopts the first plate electrode that has first trompil and have the second trompil in turn, and electrolysis passageway is injectd jointly to first trompil and second trompil, first plate electrode and second plate electrode periphery set up with fixed first apron and the second of the two, and the water injection well choke intercommunication on electrolysis passageway and the first water injection well choke of intaking on the apron and the second apron, even get the waste water that gets into through the water injection well choke on the second apron again behind the electrolysis passageway on the first apron, and waste water is when the electrolytic passageway of flow-through, take place electrolysis catalytic oxidation between adjacent first plate electrode and the second plate electrode, thereby effectively get rid of the COD in the waste water. From this, adopt the device can effectively reduce the COD in the waste water, area is little simultaneously, and further can be with the device direct mount's pipeline on, the cost is low.
In another aspect of the present invention, the utility model provides a wastewater treatment system. According to the embodiment of the utility model, the wastewater treatment system is provided with the electrochemical closed oxidation device. Therefore, by adopting the wastewater treatment system in the system, COD in wastewater can be effectively removed, the operation is flexible, the occupied area is small, and the manufacturing cost is low. It should be noted that the features and advantages described above with respect to the electrochemically closed oxidation unit are equally applicable to the wastewater treatment system and will not be described in further detail herein.
The invention will now be described with reference to specific examples, which are intended to be illustrative only and not to be limiting in any way.
Example 1
The electrochemical closed oxidation device is adopted to treat the waste leachate, namely the initial COD of the waste leachate>20000ppm, and 4 waste leachate are fed into the electrolysis channel through the water inlet nozzle, and are arranged between the first cover plate and the second cover plateA first electrode plate and a second electrode plate 5, wherein the first electrode plate is made of stainless steel, the second electrode plate is made of stainless steel, and the current density is 200A/m2Flow velocity of 0.5m3/m2The power supply reversing period is 5min, the retention time of the wastewater in the electrolysis channel is 2min, and the COD in the treated liquid discharged by the water blowing nozzle is 150 ppm.
Example 2
The electrochemical closed oxidation device is adopted to treat certain high-concentration COD wastewater, namely initial COD>10000ppm, the garbage leachate is supplied into the electrolytic channel through a water inlet nozzle, 6 first electrode plates and 7 second electrode plates are arranged between the first cover plate and the second cover plate, the first electrode plates are made of titanium, the second electrode plates are made of titanium, and the current density is 200A/m2Flow velocity of 0.5m3/m2The power supply reversing period is 10min, the retention time of the wastewater in the electrolysis channel is 3min, and the COD in the treated liquid discharged by the water blowing nozzle is 100 ppm.
Example 3
The electrochemical closed oxidation device is adopted to treat the waste leachate, namely the initial COD of the waste leachate>30000ppm, feeding garbage leachate into the electrolysis channel via water inlet nozzle, arranging 4 first electrode plates and 5 second electrode plates between the first cover plate and the second cover plate, wherein the first electrode plates are made of stainless steel, the second electrode plates are made of stainless steel, and the current density is 250A/m2Flow velocity of 0.3m3/m2The power supply reversing period is 20min, the retention time of the wastewater in the electrolysis channel is 5min, and the COD in the treated liquid discharged by the water blowing nozzle is 180 ppm.
Example 4
The electrochemical closed oxidation device is adopted to treat certain high-concentration COD wastewater, namely initial COD>8000ppm, supplying the garbage leachate into the electrolytic channel through a water inlet nozzle, arranging 2 first electrode plates and 3 second electrode plates between the first cover plate and the second cover plate, wherein the first electrode plates are made of titanium, the second electrode plates are made of titanium, and the current density is 200A/m2Flow velocity of 0.6m3/m2H, the power supply commutation period is 30min, and the wastewater is inThe residence time in the electrolytic channel is 5min, and the COD in the treated liquid discharged from the water blowing nozzle is 100 ppm.
Example 5
The electrochemical closed oxidation device is adopted to treat certain high-concentration COD wastewater, namely initial COD>5000ppm, supplying the garbage leachate into the electrolytic channel through a water inlet nozzle, arranging 4 first electrode plates and 5 second electrode plates between the first cover plate and the second cover plate, wherein the first electrode plates are made of graphite, the second electrode plates are made of graphite, and the current density is 150A/m2Flow velocity of 0.1m3/m2The power supply reversing period is 60min, the retention time of the wastewater in the electrolysis channel is 2.5min, and the COD in the treated liquid discharged from the water blowing nozzle is 150 ppm.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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 invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (10)
1. An electrochemical closed oxidation apparatus, comprising:
the water inlet nozzle is arranged on the first cover plate;
the second cover plate is opposite to the first cover plate and arranged at intervals, and a water outlet nozzle is arranged on the second cover plate;
the first electrode plate is provided with a first hole area;
a gasket is arranged between the second electrode plate and the first electrode plate, the first electrode plate and the second electrode plate are alternately arranged between the first cover plate and the second cover plate, a second hole area is formed on the second electrode plate, the first hole area and the second hole area jointly define an electrolysis channel, and the electrolysis channel is communicated with the water inlet nozzle and the water outlet nozzle;
a power source electrically connected to the first electrode plate and the second electrode plate.
2. The device of claim 1, wherein the first cover sheet and the second cover sheet are PVC cover sheets or metal cover sheets.
3. The device of claim 1 or 2, wherein the first electrode plate comprises a first circular electrolysis portion and a first tab portion connected, and the first aperture region is disposed at the center of the first circular electrolysis portion.
4. The device of claim 3, wherein the second electrode plate comprises a second circular electrolytic portion and a second pole ear portion connected, and the second aperture region is disposed in a center of the second circular electrolytic portion.
5. The apparatus of claim 4, wherein the first and second pole ear portions are disposed on one or both sides of the electrolysis channel.
6. The device of claim 4, wherein the gasket mates with the first circular electrolysis portion or the second circular electrolysis portion.
7. The apparatus of claim 1, wherein the first electrode plate and the second electrode plate are each independently made of stainless steel, titanium, copper, or titanium-plated noble metal or surface-coated with a catalyst.
8. The apparatus of claim 1, wherein the power source is a dc commutated power source, and wherein a positive pole of the dc commutated power source is periodically electrically connected to one of the first and second electrode plates, and a negative pole of the dc commutated power source is periodically electrically connected to the other of the first and second electrode plates.
9. The apparatus of claim 1, further comprising a fastening bolt connecting the first cover plate and the second cover plate.
10. A wastewater treatment system having an electrochemically closed oxidation unit according to any one of claims 1 to 9.
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| CN201921390063.7U CN210825560U (en) | 2019-08-23 | 2019-08-23 | Electrochemical closed oxidation device and wastewater treatment system with same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110436581A (en) * | 2019-08-23 | 2019-11-12 | 中国恩菲工程技术有限公司 | The closed oxidation unit of electrochemistry and the waste water treatment system with it |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110436581A (en) * | 2019-08-23 | 2019-11-12 | 中国恩菲工程技术有限公司 | The closed oxidation unit of electrochemistry and the waste water treatment system with it |
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