CN212504150U - Electrocatalytic oxidation device and wastewater treatment system - Google Patents
Electrocatalytic oxidation device and wastewater treatment system Download PDFInfo
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- CN212504150U CN212504150U CN202020712031.0U CN202020712031U CN212504150U CN 212504150 U CN212504150 U CN 212504150U CN 202020712031 U CN202020712031 U CN 202020712031U CN 212504150 U CN212504150 U CN 212504150U
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Abstract
The utility model discloses an electrocatalytic oxidation device and effluent disposal system, electrocatalytic oxidation device includes: direct current power supply, cell body, inlet and liquid outlet, wherein, be provided with more than one in the cell body by titanium base plate embedding cobalt iridium granule after calcine the anode plate that obtains, and more than one stainless steel negative plate, wherein, the anode plate with the negative plate is followed liquid flow direction interval sets up in the cell body, direct current power supply's anodal is connected the anode plate, direct current power supply's negative pole is connected the negative plate.
Description
Technical Field
The utility model relates to an electrochemistry technical field especially relates to an electrocatalytic oxidation device and effluent disposal system.
Background
The industrial wastewater such as electroplating wastewater has the characteristics of strong pollution, various pollutants, poor biodegradability, high heavy metal content and the like, so the electroplating wastewater has higher treatment difficulty and higher treatment cost, and much of the electroplating wastewater is treated by a chemical precipitation method, and the sludge yield is higher.
At present, the treatment methods of various electroplating wastewater treatment plants are different according to the characteristics of various water qualities, such as a chromium-containing wastewater reduction-coagulation precipitation method, a copper ammonia wastewater adoption ferrous sulfate method, a mixed wastewater alkaline cyanide breaking-reduction-coagulation precipitation method and the like, wherein a plurality of types of wastewater need to be oxidized during treatment so as to achieve the purposes of improving the biodegradability of the wastewater, cyanide breaking, complex breaking and the like. The typical representative of the oxidation of electroplating wastewater is a Fenton oxidation method, however, in the treatment process of the method, chemical agents such as acid, alkali, hydrogen peroxide, ferrous salt and the like need to be added, the dependence on the agents is strong, the sludge amount is large, the sludge disposal cost is high, and the treatment cost is high. With the increasing of environmental protection, the prices of various chemical raw materials are increasing, and the cost of the traditional treatment method depending on chemical agents is higher and higher. Meanwhile, the sludge disposal cost is rapidly increased, and the generated secondary pollution is also accompanied.
SUMMERY OF THE UTILITY MODEL
In view of this, the technical solution of the present invention is realized as follows:
according to a first aspect of the embodiments of the present invention, there is provided an electrocatalytic oxidation apparatus, characterized in that the apparatus includes: direct current power supply, cell body, inlet and liquid outlet, wherein, be provided with more than one in the cell body by titanium base plate embedding cobalt iridium granule after calcine the anode plate that obtains, and more than one stainless steel negative plate, wherein, the anode plate with the negative plate is followed liquid flow direction interval sets up in the cell body, direct current power supply's anodal is connected the anode plate, direct current power supply's negative pole is connected the negative plate.
In one embodiment, the apparatus further comprises:
an aeration assembly for injecting air into said liquid within said tank, wherein said aeration assembly comprises: the air blowing device is arranged outside the tank body, and the perforated pipe is connected with the air blowing device and arranged at the bottom in the tank body.
In one embodiment, the apparatus further comprises:
and the baffle plate is arranged in the groove body and is vertical to the flowing direction of the liquid.
In one embodiment, the apparatus further comprises:
more than one photocatalytic tube.
In one embodiment, the apparatus further comprises:
and the defoaming device is arranged at the upper part of the tank body and used for removing the foam on the liquid surface.
In one embodiment, the defoaming device comprises:
the scraping plate is arranged on the upper portion of the groove body, and the motor drives the scraping plate to scrape the foam on the liquid surface.
In one embodiment, the apparatus further comprises:
and the spraying device sprays the liquid surface.
In one embodiment, the apparatus further comprises: and the reflux device is connected with the liquid outlet and used for refluxing part of liquid reserved from the liquid outlet to the liquid inlet.
According to a second aspect of the embodiments of the present invention, there is provided a wastewater treatment system, characterized in that the system includes: the device comprises an electrocatalytic oxidation device and a ceramic membrane filtering device, wherein the ceramic membrane filtering device is connected with a liquid outlet of the electrocatalytic oxidation device and is used for filtering liquid discharged by the electrocatalytic oxidation device.
In one embodiment, the ceramic membrane filtration device comprises:
a ceramic membrane filter box;
more than one ceramic membrane filter plate horizontally arranged in the ceramic membrane filter box;
the coating device is used for spraying a ceramic membrane particle layer on the ceramic membrane filter plate;
and liquid discharged by the electrocatalytic oxidation device flows through the ceramic membrane particle layer and the ceramic membrane filter plate.
In one embodiment, the ceramic membrane filtration device further comprises:
and the backwashing device is used for removing the ceramic membrane particle layer from the ceramic membrane filter plate.
In one embodiment, the ceramic membrane filtration device further comprises:
the ceramic membrane particle layer and the ceramic membrane filter plate are made of the same material.
The embodiment of the utility model provides an electrocatalytic oxidation device, include: direct current power supply, cell body, inlet and liquid outlet, wherein, be provided with more than one in the cell body by titanium base plate embedding cobalt iridium granule after calcine the anode plate that obtains, and more than one stainless steel negative plate, wherein, the anode plate with the negative plate is followed liquid flow direction interval sets up in the cell body, direct current power supply's anodal is connected the anode plate, direct current power supply's negative pole is connected the negative plate. Therefore, on one hand, the wastewater flowing through the electrocatalytic oxidation device is continuously oxidized by an electrochemical method, so that organic matters are degraded and mineralized, and secondary pollution caused by sludge and the like generated by inputting chemical raw materials is reduced. On the other hand, the cobalt iridium particles are calcined on the anode plate, so that the surface activity of the anode plate is improved, and the oxidation capability of the wastewater is further improved.
Drawings
FIG. 1 is a schematic view of the structure of an electrocatalytic oxidation apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a wastewater treatment system according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of another wastewater treatment system according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a ceramic membrane filtration apparatus according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following examples.
As shown in fig. 1, the embodiment of the present invention provides an electrocatalytic oxidation apparatus 100, which includes: the device comprises a direct current power supply 110, a tank body 120, a liquid inlet 130 and a liquid outlet 140, wherein the tank body 120 is internally provided with more than one anode plate 121 which is obtained by embedding a titanium substrate into cobalt iridium particles and then calcining the titanium substrate, and more than one stainless steel cathode plate 122, wherein the anode plate 121 and the cathode plate 122 are arranged at intervals along the flowing direction of liquid in the tank body 120, the anode of the direct current power supply 110 is connected with the anode plate 121, and the cathode of the direct current power supply 110 is connected with the cathode plate 122.
Here, the tank 120 may be made of a polypropylene (PP) plate, and the liquid inlet 130 may be disposed at a first end of the tank 120, the liquid outlet 140 may be disposed at a second end of the tank 120, and the first end and the second end may be opposite to each other on the tank 120. Liquid such as wastewater to be treated can be injected into the tank 120 from the liquid inlet 130, and then flows through the anode plate 121 and the cathode plate 122 and is discharged from the liquid outlet 140.
The anode plate 121 and the cathode plate 122 may face the liquid flow direction, and the anode plate 121 and the cathode plate 122 may be provided in pairs. N pairs of anode plates 121 and cathode plates 122 may be provided, N being an integer greater than or equal to 1.
The anode plate 121 can be made by using a titanium base as a base material and embedding cobalt iridium particles into the base material and calcining the cobalt iridium particles. The anode plate 121 may have a specification of 500mm × 500mm, the electrode plate and the dc power supply 110 may be connected by a copper plate, the connecting plate between the electrode plate and the copper plate is made of the material of the electrode plate itself, and the connecting plate and the copper plate may be fixed by bolts.
The cathode plate 122 can be made of a 316L stainless steel plate, the specification of the cathode plate 122 can be 500mm multiplied by 500mm, the cathode plate 122 is connected with the direct current power supply 110 through a copper plate, a connecting plate between the cathode plate and the copper plate is made of the material of the cathode plate, and the connecting plate and the copper plate are fixed through bolts.
The connection part of the polar plate and the copper plate is arranged in an insulating way; the sealing part is required to be completely sealed by adopting an insulating material.
By arranging a plurality of pairs of anode plates 121 and cathode plates 122, the contact surfaces of the waste water and the anode plates 121 and the cathode plates 122 are increased, and the liquid oxidation effect is improved. Cobalt iridium particles are further calcined on the anode plate 121, so that the surface activity of the anode plate 121 is improved, and the oxidation capacity of wastewater is further improved.
In one embodiment, the apparatus further comprises:
an aeration assembly 150 for injecting air into the liquid in the tank 120, wherein the aeration assembly 150 comprises: the air blowing device 151 is arranged outside the tank body 120, and the perforated pipe 152 is connected with the air blowing device 151 and arranged at the bottom in the tank body 120.
The air blowing device 151 may be an air blower or the like. The blowing device 151 may be disposed outside the tank 120 to blow air into the liquid such as wastewater in the tank 120 through the perforated pipe 152. The perforated pipe 152 may be made of a stainless steel pipe, and a plurality of perforations are formed in the pipe wall to discharge air blown by the blowing device 151.
Through the aeration component 150, gas such as air or oxygen is injected into the wastewater, so that the effects of uniformly mixing, stirring and accelerating mass transfer can be achieved, more oxidant can be generated by the cathode plate 122, and the wastewater treatment efficiency is improved. The injected gas also prevents the suspension in the liquid from sinking.
In one embodiment, the apparatus further comprises: and a baffle 123 arranged inside the tank 120 and perpendicular to the liquid flowing direction.
The baffle plate 123 can change the flow direction of liquid such as waste water in the tank body 120, prolong the retention time of the waste water in the tank, and prolong the contact time of the waste water with the anode plate 121 and the cathode plate 122, thereby improving the action time of electrolytic catalytic oxidation and having extremely high catalytic oxidation effect.
In one embodiment, the apparatus further comprises: more than one photocatalytic tube 124.
The wastewater may be photocatalytic before and/or after flowing through the anode and cathode plates 121 and 122, and the photocatalytic tubes 124 may allow photons of the wastewater to place molecules of substances in the wastewater in an electronically excited state, thereby facilitating chemical reactions with other substances.
In one embodiment, the apparatus further comprises: a defoaming device 160 disposed at the upper portion of the tank body 120 for removing the foam on the liquid surface.
In order to prevent the generation of foam due to the oxidation reaction of wastewater and aeration, a defoaming device 160 may be provided at the upper portion of the tank body 120. The defoaming device 160 can remove the foam on the surface of the wastewater by means of air injection defoaming and the like.
In one embodiment, the defoaming device 160 includes: a scraper 161 and a motor 162 arranged at the upper part of the tank body 120, wherein the scraper 161 is driven by the motor 162 to scrape the foam on the liquid surface.
Here, the scraper 161 may be a chain scraper 161, and the scraper 161 is provided on a driving chain and driven by a motor 162 to remove bubbles from the surface of the wastewater.
The groove 120 may be provided with a foam discharge port, and the scraper 161 may scrape foam to the foam discharge port and discharge the foam through a pipe connected to the foam discharge port.
In one embodiment, the apparatus further comprises: and a spraying device 170 for spraying the liquid surface.
The spray device 170 may consist of one or more water tubes with water outlets above the wastewater level. The spray device 170 may spray externally drawn water toward the waste water level or draw the waste water to spray. Thus, the foam on the surface of the solution is defoamed. The generation of foam is reduced.
In one embodiment, the apparatus further comprises: a reflux unit 180, wherein the reflux unit 180 is connected to the liquid outlet 140 and reflux part of the liquid left from the liquid outlet 140 to the liquid inlet 130.
The electrolytic catalytic oxidation device can be further provided with a reflux device 180, and wastewater discharged from the liquid outlet 140 is injected into the liquid inlet 130 again, so that the wastewater is subjected to circulating electrolytic catalytic oxidation, and the effect of electrolytic catalytic oxidation is improved.
The present exemplary embodiment provides a wastewater treatment system, as shown in fig. 2, a wastewater treatment system 10 including: the device comprises an electrocatalytic oxidation device 100 and a ceramic membrane filtering device 200 which is connected with a liquid outlet 140 of the electrocatalytic oxidation device 100 and is used for filtering liquid discharged from the electrocatalytic oxidation device 100.
Here, the ceramic membrane filter device 200 may further filter the wastewater discharged from the electrocatalytic oxidation device 100, for example, to filter fine particles in the wastewater discharged from the electrocatalytic oxidation device 100. Further improving the wastewater treatment effect.
The inlet of the ceramic membrane filtration unit 200 may be connected to the outlet of the electrocatalytic oxidation unit 100. The outlet of the ceramic membrane filtration unit 200 discharges the filtered liquid.
The ceramic membrane filtration device 200 may include a ceramic membrane filtration tank and a ceramic membrane filtration material disposed in the ceramic membrane filtration tank, and impurities are blocked by the ceramic membrane filtration material. So, can filter impurity, improve the waste water treatment effect.
As shown in fig. 3, a regulating reservoir 300 may be disposed between the inlet 130 of the ceramic membrane filtration apparatus 200 and the outlet 140 of the electrocatalytic oxidation apparatus 100 for balancing the wastewater treatment capacity between the ceramic membrane filtration apparatus 200 and the electrocatalytic oxidation apparatus 100.
In one embodiment, the ceramic membrane filtration device 200 comprises:
a ceramic membrane filter tank 210;
more than one ceramic membrane filter plate 220 horizontally arranged in the ceramic membrane filter box 210;
a coating device 240 for spraying a ceramic membrane particle layer 230 on the ceramic membrane filter plate 220;
the liquid discharged from the electrocatalytic oxidation apparatus 100 passes through the ceramic membrane particle layer 230 and the ceramic membrane filter plate 220.
Here, the ceramic membrane particle layer 230 may be a coating layer consisting of ceramic membrane particles laid on the ceramic membrane filter plate 220. The ceramic membrane particles may be in powder form, and the size of the ceramic membrane particles may be 0.0001mm to 0.001 mm. The coating device 240 may mix the ceramic membrane particles with water, and spray the mixture of the ceramic membrane particles and water onto the surface of the ceramic membrane filter 220 through a pipe or the like. Thus, a layer of ceramic membrane particles is left on the surface of the ceramic membrane filter plate 220.
The ceramic membrane particle layer 230 may pre-filter the liquid discharged from the electrocatalytic oxidation apparatus 100, so that impurities in the liquid remain in the ceramic membrane particle layer 230, and the impurities in the liquid are reduced from being accumulated in the ceramic membrane filter 220, thereby affecting the filtering effect of the ceramic membrane filter 220. Thus, the filtering effect can be improved, and the service life of the ceramic membrane filter plate 220 can be prolonged.
In one embodiment, the ceramic membrane filtration device 200 further comprises:
a backwashing means 250 for removing the ceramic membrane particle layers 230 from the ceramic membrane filter plates 220.
When the ceramic film particle layer 230 contains excessive impurities, the filtering effect of the ceramic film particle layer 230 is affected.
The backwashing device 250 may remove the ceramic membrane particle layer 230 on the ceramic membrane filter plates 220 together with impurities by flushing water or the like. The coating device 240 may spray the ceramic membrane particle layer 230 on the ceramic membrane filter plate 220 again, so as to realize the cyclic spraying of the ceramic membrane particles on the ceramic membrane filter plate 220, thereby improving the filtering effect of the ceramic membrane particle layer 230.
The membrane coating device 240 and the backwashing device 250 can be connected to the same pipeline and are communicated with the pipeline through valve control. When the membrane coating device 240 sprays the ceramic membrane particle layer 230 on the ceramic membrane filter plates 220 through the pipeline, the valve of the backwashing device 250 may be turned off, and the connection between the backwashing device 250 and the pipeline may be cut off. When the backwashing device 250 sprays water to the ceramic membrane filter plates 220 through the pipeline to remove the ceramic membrane particle coating layer 230, the valve of the film coating device 240 can be closed, and the connection between the film coating device 240 and the pipeline can be cut off.
In one embodiment, the ceramic membrane filtration device 200 further comprises:
the ceramic membrane particle layer 230 is made of the same material as the ceramic membrane filter plate 220.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the scope of the present invention, which is to be construed as limiting the present invention.
Claims (12)
1. An electrocatalytic oxidation apparatus, said apparatus comprising: direct current power supply, cell body, inlet and liquid outlet, wherein, be provided with more than one in the cell body by titanium base plate embedding cobalt iridium granule after calcine the anode plate that obtains, and more than one stainless steel negative plate, wherein, the anode plate with the negative plate is followed liquid flow direction interval sets up in the cell body, direct current power supply's anodal is connected the anode plate, direct current power supply's negative pole is connected the negative plate.
2. The apparatus of claim 1, wherein the apparatus further comprises:
an aeration assembly for injecting air into said liquid within said tank, wherein said aeration assembly comprises: the air blowing device is arranged outside the tank body, and the perforated pipe is connected with the air blowing device and arranged at the bottom in the tank body.
3. The apparatus of claim 1, further comprising:
and the baffle plate is arranged in the groove body and is vertical to the flowing direction of the liquid.
4. The apparatus of claim 1, further comprising:
more than one photocatalytic tube.
5. The apparatus of claim 1, further comprising:
and the defoaming device is arranged at the upper part of the tank body and used for removing the foam on the liquid surface.
6. The apparatus of claim 5, wherein the defoaming device comprises:
the scraping plate is arranged on the upper portion of the groove body, and the motor drives the scraping plate to scrape the foam on the liquid surface.
7. The apparatus of claim 1, further comprising:
and the spraying device sprays the liquid surface.
8. The apparatus of any one of claims 1 to 7, further comprising: and the reflux device is connected with the liquid outlet and used for refluxing part of liquid reserved from the liquid outlet to the liquid inlet.
9. A wastewater treatment system, characterized in that the system comprises: an electrocatalytic oxidation apparatus as set forth in any one of claims 1 to 8, and a ceramic membrane filtration unit connected to a liquid outlet of said electrocatalytic oxidation apparatus for filtering liquid discharged from said electrocatalytic oxidation apparatus.
10. The system of claim 9, wherein the ceramic membrane filtration device comprises:
a ceramic membrane filter box;
more than one ceramic membrane filter plate horizontally arranged in the ceramic membrane filter box;
the coating device is used for spraying a ceramic membrane particle layer on the ceramic membrane filter plate;
and liquid discharged by the electrocatalytic oxidation device flows through the ceramic membrane particle layer and the ceramic membrane filter plate.
11. The system of claim 10, wherein the ceramic membrane filtration device further comprises:
and the backwashing device is used for removing the ceramic membrane particle layer from the ceramic membrane filter plate.
12. The system of claim 10 or 11, wherein the ceramic membrane filtration device further comprises:
the ceramic membrane particle layer and the ceramic membrane filter plate are made of the same material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020712031.0U CN212504150U (en) | 2020-04-23 | 2020-04-23 | Electrocatalytic oxidation device and wastewater treatment system |
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| CN202020712031.0U CN212504150U (en) | 2020-04-23 | 2020-04-23 | Electrocatalytic oxidation device and wastewater treatment system |
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| CN212504150U true CN212504150U (en) | 2021-02-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113045115A (en) * | 2021-03-12 | 2021-06-29 | 南通寰宇博新化工环保科技有限公司 | Landfill leachate treatment method based on electrocatalytic oxidation coupled biochemistry |
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2020
- 2020-04-23 CN CN202020712031.0U patent/CN212504150U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113045115A (en) * | 2021-03-12 | 2021-06-29 | 南通寰宇博新化工环保科技有限公司 | Landfill leachate treatment method based on electrocatalytic oxidation coupled biochemistry |
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