CN117486323B - Electric catalytic oxidation hospital wastewater treatment device - Google Patents
Electric catalytic oxidation hospital wastewater treatment device Download PDFInfo
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- CN117486323B CN117486323B CN202410001159.9A CN202410001159A CN117486323B CN 117486323 B CN117486323 B CN 117486323B CN 202410001159 A CN202410001159 A CN 202410001159A CN 117486323 B CN117486323 B CN 117486323B
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- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 47
- 230000003647 oxidation Effects 0.000 title claims abstract description 45
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 36
- 230000003197 catalytic effect Effects 0.000 title description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 94
- 239000002351 wastewater Substances 0.000 claims abstract description 55
- 239000003054 catalyst Substances 0.000 claims abstract description 45
- 238000004140 cleaning Methods 0.000 claims description 39
- 230000002093 peripheral effect Effects 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 abstract description 25
- 230000015556 catabolic process Effects 0.000 abstract description 4
- 238000006731 degradation reaction Methods 0.000 abstract description 4
- 239000005416 organic matter Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 21
- 239000002957 persistent organic pollutant Substances 0.000 description 20
- 230000000903 blocking effect Effects 0.000 description 11
- 230000005684 electric field Effects 0.000 description 9
- 239000002906 medical waste Substances 0.000 description 7
- 239000010865 sewage Substances 0.000 description 5
- 238000006555 catalytic reaction Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000006056 electrooxidation reaction Methods 0.000 description 4
- 238000005054 agglomeration Methods 0.000 description 3
- 230000002776 aggregation Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- -1 hydroxyl free radical Chemical class 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 238000006864 oxidative decomposition reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
- C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- 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
- C02F2001/46119—Cleaning the electrodes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/003—Wastewater from hospitals, laboratories and the like, heavily contaminated by pathogenic microorganisms
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (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)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Catalysts (AREA)
Abstract
The application discloses electrocatalytic oxidation hospital wastewater treatment device relates to the technical field of wastewater treatment, and comprises a treatment box and two electrode plates, wherein a cavity is formed in the treatment box, a water inlet and a water outlet are formed in the treatment box, the two electrode plates are respectively positioned on two sides of the cavity, and the electrocatalytic oxidation hospital wastewater treatment device further comprises a driving piece, a rotating piece and a mesh enclosure; the rotating piece is rotationally connected with the processing box, the two electrode plates are both connected with the rotating piece, and the driving piece can drive the rotating piece to rotate; the mesh enclosure is positioned in the cavity and between the two electrode plates, the interior of the mesh enclosure is provided with a containing cavity, and meshes are formed in the mesh enclosure. The utility model discloses a can evenly carry out electrocatalytic oxidation to hospital's waste water, reduce waste water treatment dead angle, improve waste water treatment efficiency to can reduce the difficult degradation organic matter, the probability that substances such as catalyst adhere to the caking on the electrode plate, guarantee the current efficiency of follow-up electrode plate.
Description
Technical Field
The application relates to the technical field of wastewater treatment, in particular to an electrocatalytic oxidation hospital wastewater treatment device.
Background
The electrocatalytic oxidation is a technology for removing organic pollutants which are difficult to degrade and are dissolved in wastewater, and the operating principle is that a direct current electric field is formed in a reaction tank by supplying power through an external power supply, so that a particle catalyst filled in the reaction tank is charged in an induction way under the action of the electric field to form a particle electrode, and a strong oxidant hydroxyl free radical (OH) is generated under the electrolysis and catalysis actions of a main electrode and the particle electrode of the reaction tank, and the organic matters which are difficult to degrade in the wastewater are oxidized and decomposed through the OH to be converted into the organic matters which are easy to degrade or CO2 and H2O. The electrocatalytic oxidation has the characteristics of strong oxidative decomposition capability, low operation energy consumption, no addition of chemical agents in the reaction process, no sludge generation, capability of improving the biodegradability of wastewater and the like, so that the electrocatalytic oxidation is widely applied to wastewater treatment in hospitals.
The utility model discloses an electrocatalytic oxidation wastewater treatment device with the publication number of CN214270325U, which comprises a treatment box, wherein a placement ring is placed at the top of the treatment box, two electrode plates which are respectively positioned in the treatment box are symmetrically and fixedly arranged at the bottom of the placement ring, and are respectively a cathode plate and an anode plate, and two mounting covers which are respectively positioned at the two sides of the treatment box are symmetrically and fixedly arranged at the bottom of the placement ring.
However, in the above technical scheme, the two electrode plates are fixed in position in the treatment box, so that the direct current electric field range formed between the two electrode plates is fixed, dead angles are easy to appear in the treatment box, the effect of electrocatalytic oxidation of wastewater at the dead angles is reduced, and substances such as refractory organic matters and catalysts at the dead angles are easy to adhere to the electrode plates and agglomerate, so that the current efficiency of the subsequent electrode plates is affected.
Disclosure of Invention
The utility model provides an electrocatalytic oxidation hospital wastewater treatment device can evenly carry out electrocatalytic oxidation to hospital's waste water, reduces the waste water treatment dead angle, improves waste water treatment efficiency to can reduce the probability that substances such as difficult degradation organic matter, catalyst adhere to the caking on the electrode plate, guarantee the current efficiency of follow-up electrode plate.
The application provides an electrocatalytic oxidation hospital wastewater treatment device, adopts following technical scheme:
the electrocatalytic oxidation hospital wastewater treatment device comprises a treatment box and two electrode plates, wherein a cavity is formed in the treatment box, a water inlet and a water outlet which are communicated with the cavity are formed in the treatment box, the two electrode plates are arranged in the cavity and are respectively positioned on two sides of the cavity, and the electrocatalytic oxidation hospital wastewater treatment device further comprises a driving piece, a rotating piece and a mesh cover;
the driving piece is arranged at the top of the treatment box, the rotating piece is positioned at the top of the cavity, the rotating piece is rotationally connected with the treatment box, the rotating axis of the rotating piece is vertical and is centered relative to the cavity, the two electrode plates are connected with the rotating piece, and the driving piece can drive the rotating piece to rotate;
the mesh enclosure is positioned in the cavity and between the two electrode plates, the interior of the mesh enclosure is provided with a containing cavity for storing the catalyst, and a plurality of meshes communicated with the containing cavity are formed in the mesh enclosure.
By adopting the technical scheme, the electrode plates rotate in the cavity and form a direct current electric field, so that the hospital wastewater in the cavity can be uniformly subjected to electrocatalytic oxidation, the wastewater treatment dead angle in the cavity is reduced, and the wastewater treatment is improved to be small; meanwhile, the electrode plate keeps rotating, so that the probability of adhesion and agglomeration of substances such as refractory organic matters, catalysts and the like on the electrode plate can be effectively reduced, the current efficiency of the subsequent electrode plate can be ensured, and the reliability of electro-oxidation catalysis can be further improved.
Optionally, the shape of the cavity is a cylinder structure, and the electrode plate is an arc plate structure; the axis of rotation of rotating member with the axis coincidence of cavity, the axis of the arc orbit of electrode plate with the axis coincidence of cavity, just there is the interval between electrode plate and the week side chamber wall of cavity.
Through adopting above-mentioned technical scheme, make two electrode plates symmetrical distribution in the cavity to can make the direct current electric field that two electrode plates formed more even to the treatment effect of the hospital waste water in the cavity, and can further reduce the waste water treatment dead angle in the cavity.
Optionally, the device further comprises two auxiliary components, wherein the two auxiliary components are respectively arranged on the two electrode plates, and the auxiliary components are positioned at one end of the electrode plates along the rotation direction of the rotating piece;
the auxiliary assembly comprises a cleaning piece, the cleaning piece is connected with the electrode plate, and the cleaning piece is in contact with and propped against the peripheral side cavity wall of the cavity.
By adopting the technical scheme, in the process of rotating the electrode plate, the cleaning piece can scrape substances such as refractory organic matters, catalysts and the like attached to the peripheral side cavity wall of the cavity, so that the electro-oxidation catalytic treatment effect of the hospital wastewater in the cavity can be improved; meanwhile, the cleaning piece can prevent substances such as refractory organic matters and catalysts from entering the space between the electrode plate and the peripheral side cavity wall of the cavity, and can guide the substances such as refractory organic matters and catalysts to move between the electrode plates, so that the probability of adhesion and agglomeration of the substances such as refractory organic matters and catalysts on the electrode plates can be further reduced, and the electro-oxidation catalytic treatment effect of hospital wastewater in the cavity can be further improved.
Optionally, the auxiliary assembly further comprises a water blocking piece, one end of the water blocking piece is connected with the electrode plate, and the other end of the water blocking piece is close to the mesh enclosure.
By adopting the technical scheme, in the process that the water retaining piece moves along with the rotation of the electrode plate, the water retaining piece can stir the waste water of a hospital in the cavity, so that the waste water is fully contacted with the catalyst, and the electro-oxidation catalysis effect is further improved; the water baffle can also reduce the probability of contacting the substances such as refractory organic matters, catalysts and the like with the opposite end surfaces of the two electrode plates, thereby further reducing the probability of adhering and agglomerating the substances such as refractory organic matters, catalysts and the like on the electrode plates.
Optionally, one end of the water blocking member along the rotation direction of the rotating member is provided with a guiding surface for guiding the flow of the wastewater, and one end of the guiding surface away from the electrode plate is close to one end of the electrode plate away from the water blocking member.
Through adopting above-mentioned technical scheme, the in-process that the water retaining piece moved along with the electrode plate rotation, the guide surface can guide rather than the waste water of contact and flow towards the direction that is close to the screen panel to can promote waste water and catalyst contact, and then can further improve the efficiency and the effect of hospital waste water electric oxidation catalytic treatment.
Optionally, the mesh enclosure is centered in the cavity.
Through adopting above-mentioned technical scheme, can make the contact of the catalyst in the hospital waste water in the cavity and the screen panel more even to can make the electrocatalytic oxidation treatment effect that the hospital waste water received in the cavity more even.
Optionally, the mesh enclosure is cylindrical structure, and the axis of mesh enclosure with the axis coincidence of cavity.
Through adopting above-mentioned technical scheme, the in-process that the water retaining piece moved along with the electrode plate rotation, the sewage that receives the guide surface to guide can flow around the surrounding of screen panel to can further promote the catalyst contact in sewage and the screen panel, and then can further improve the efficiency and the effect of hospital waste water electric oxidation catalytic treatment.
Optionally, the cleaning member is connected with the water retaining member, the water retaining member is rotationally connected with the electrode plate, and the rotation axis of the water retaining member is parallel to the rotation axis of the rotating member.
Through adopting above-mentioned technical scheme for the washing piece can drive the water retaining piece to rotate for the electrode plate according to the volume of the difficult degradation organic matter that adheres to on the cavity circumference side wall, material such as catalyst, thereby can reduce the probability that influences the rotation piece rotation because of the frictional force between washing piece and the cavity circumference side wall is too big.
Optionally, the water retaining member has a limitation in the process of rotating relative to the electrode plate, when the water retaining member rotates to a limit position in a direction approaching to the mesh enclosure, the resistance of the water retaining member to the waste water is minimum at the moment, and the acting force of the cleaning member to the peripheral side cavity wall of the cavity is maximum; when the water retaining member rotates to the limit position in the direction away from the net cover, the resistance of the water retaining member to the waste water is the largest at the moment, and the acting force of the cleaning member to the peripheral side cavity wall of the cavity is the smallest.
Through adopting above-mentioned technical scheme, make the water retaining member rotate the back because of the frictional force between cleaning member and the cavity week side wall is too big, the effort increase of sewage to the water retaining member drives the water retaining member and rotates the reposition to order to drive the cleaning member and scrape the intractable degradation organic matter, the substances such as catalyst that will adhere to on the cavity week side wall.
In summary, the present application includes at least one of the following beneficial effects:
1. the electric catalytic oxidation can be uniformly carried out on the hospital wastewater, the dead angle of wastewater treatment is reduced, the wastewater treatment efficiency is improved, the probability of adhesion and agglomeration of refractory organic matters, catalysts and other substances on the electrode plates can be reduced, and the current efficiency of the subsequent electrode plates is ensured;
2. the contact between the hospital wastewater and the catalyst can be promoted, so that the efficiency and the effect of the oxidation catalytic treatment of the hospital wastewater are improved;
3. substances such as refractory organic matters, catalysts and the like attached to the inner wall of the treatment tank can be effectively scraped off, and sewage in the treatment tank is stirred, so that the substances such as refractory organic matters, catalysts and the like are distributed more uniformly, and the sewage can be subjected to more uniform electrocatalytic oxidation treatment.
Drawings
FIG. 1 is a schematic diagram of an electrocatalytic oxidation hospital wastewater treatment apparatus according to an embodiment of the present application;
FIG. 2 is a longitudinal cross-sectional view of an electrocatalytic oxidation hospital wastewater treatment apparatus according to an embodiment of the present application;
FIG. 3 is a longitudinal cross-sectional view of an electrocatalytic oxidation hospital wastewater treatment device water deflector in accordance with an embodiment of the present disclosure in abutting engagement with a first stop surface;
FIG. 4 is a longitudinal cross-sectional view of an electrocatalytic oxidation hospital wastewater treatment device water deflector in accordance with an embodiment of the present disclosure in abutting engagement with a second stop surface;
fig. 5 is an enlarged view at a in fig. 3;
fig. 6 is an enlarged view at B in fig. 4.
Reference numerals illustrate: 1. a treatment box; 11. a cavity; 12. a water inlet; 13. a water outlet; 2. a driving member; 3. a rotating member; 4. an electrode plate; 41. a first limiting surface; 42. the second limiting surface; 5. a mesh enclosure; 51. a cavity; 52. a mesh; 6. an auxiliary component; 61. a water blocking member; 611. a guide surface; 62. and cleaning the piece.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-6.
The embodiment of the application discloses an electrocatalytic oxidation hospital wastewater treatment device which is used for carrying out electrocatalytic oxidation treatment on hospital wastewater, so that organic pollutants which are difficult to degrade in the wastewater and are dissolved in the wastewater are electrolyzed to form easily-degradable organic matters or CO2 and H2O under the condition of contacting with a catalyst.
Referring to fig. 1 and 2, the electrocatalytic oxidation hospital wastewater treatment apparatus includes a treatment tank 1, a driving member 2, a rotating member 3, two electrode plates 4, and a mesh enclosure 5. Wherein, the treatment box 1 is used for providing places for electrocatalytic oxidation treatment of hospital wastewater; the two electrode plates 4 are used for forming a direct current electric field, so that organic pollutants which are difficult to dissolve and degrade in the wastewater can be electrolyzed; the driving piece 2 and the rotating piece 3 are used for driving the two electrode plates 4 to rotate, so that the electrolytic effect of the two electrode plates 4 on the organic pollutants which are difficult to degrade and are dissolved in the wastewater is more uniform; the mesh enclosure 5 is used for limiting the position of the catalyst, so that the organic pollutants which are difficult to be dissolved and degraded in the wastewater can be fully contacted with the catalyst. In this embodiment, since the electricity connection principle of the electrode plate 4 and the catalysis principle of the catalyst are both existing technologies in the art, the description thereof will not be repeated, the related structure of the electricity connection of the electrode plate 4 in the drawings will not be expressed, and the types of the catalysts will not be further limited.
The treatment box 1 is of a cylindrical structure as a whole, a cylindrical cavity 11 is formed in the treatment box 1, the hospital wastewater is subjected to electrocatalytic oxidation treatment in the cavity 11, and the axis of the treatment box 1 is coincident with the axis of the cavity 11. Two sides of the bottom of the treatment box 1 are respectively provided with a water inlet 12 and a water outlet 13 for the entrance and the discharge of hospital wastewater, and the water inlet 12 and the water outlet 13 are communicated with the cavity 11.
The driving part 2 is fixedly arranged at the top of the processing box 1, and the rotating part 3 is positioned in the cavity 11 and is rotationally connected with the top of the processing box 1. The whole rotating member 3 is in a circular plate-shaped structure, and the rotating axis of the rotating member 3 coincides with the axis of the rotating member and coincides with the axis of the processing box 1.
The two electrode plates 4 are of arc plate-shaped structures, the electrode plates 4 are positioned in the cavity 11 in a vertical state, the top of each electrode plate 4 is fixedly connected with the corresponding rotating piece 3, the connecting positions of the two electrode plates 4 and the corresponding rotating piece 3 are positioned at two ends of the corresponding rotating piece 3 in the same radial direction, the arc track of each electrode plate 4 takes the axis of the corresponding rotating piece 3 as a shaft, and the intervals between the two electrode plates 4 and the axis of the corresponding rotating piece 3 are equal; the bottom of the electrode plate 4 is close to the cavity wall at the bottom of the cavity 11, and a space exists between the electrode plate 4 and the cavity wall at the peripheral side of the cavity 11.
The net cover 5 is positioned in the cavity 11 and is fixedly connected with the bottom of the treatment box 1, namely, the net cover 5 is fixedly connected to the cavity wall at the bottom of the cavity 11. The net cover 5 is of a cylindrical structure as a whole, and the axis of the net cover 5 coincides with the axis of the treatment box 1. The inside of the mesh enclosure 5 is provided with a containing cavity 51 for storing the catalyst, the surface of the mesh enclosure 5 is provided with a plurality of meshes 52, and the containing cavity 51 is communicated with the cavity 11 through the plurality of meshes 52; the mesh 52 allows hospital wastewater to enter, and effectively reduces the probability of catalyst exiting from the inside of the mesh enclosure 5. In this embodiment, the catalyst inside the mesh enclosure 5 is omitted from the drawing.
When the electrocatalytic oxidation hospital wastewater treatment device is used, hospital wastewater in the cavity 11 can be contacted with a catalyst positioned in the mesh enclosure 5, and meanwhile, a direct current electric field is formed between the two electrode plates 4, so that electrocatalytic oxidation treatment can be carried out on organic pollutants which are difficult to degrade and are dissolved in the hospital wastewater.
Further, since the soluble refractory organic pollutants in the hospital wastewater in the cavity 11 are easy to settle and are difficult to uniformly contact with the catalyst so as to perform electrocatalytic oxidation reaction, the treatment efficiency of the hospital wastewater is low and the treatment effect is poor; meanwhile, after substances such as organic pollutants which are difficult to degrade and are dissolved in hospital wastewater and catalysts which are separated from the mesh enclosure 5 are contacted with the surface of the electrode plate 4, substances are easily attached to the electrode plate 4, so that the current efficiency of the electrode plate 4 is reduced, the strength of a direct current electric field formed between the two electrode plates 4 is influenced, and the effect of electrocatalytic oxidation on the hospital wastewater is further influenced.
Referring to fig. 2 and 3, for the above-mentioned case, the electrocatalytic oxidation hospital wastewater treatment apparatus further includes two auxiliary assemblies 6 for reducing the influence of the above-mentioned problems, the two auxiliary assemblies 6 being in one-to-one correspondence with the two electrode plates 4, respectively.
Referring to fig. 3 and 4, the auxiliary assembly 6 is installed at one end corresponding to the arc-shaped trajectory of the electrode plate 4 and at the front end of the electrode plate 4 in the moving direction thereof. The auxiliary assembly 6 comprises a water retaining member 61 and a cleaning member 62, wherein the water retaining member 61 and the cleaning member 62 can reduce the probability of adsorption hardening of substances such as organic pollutants and catalysts which are difficult to be dissolved on the electrode plates 4, the water retaining member 61 can enable electrocatalytic oxidation treatment of hospital wastewater between the two electrode plates 4 to be more uniform, and the cleaning member 62 can reduce adhesion of substances such as organic pollutants and catalysts which are difficult to be dissolved on the cavity wall at the peripheral side of the cavity 11.
The whole water retaining member 61 is of an arc plate-shaped structure, one end of an arc track of the water retaining member 61 is rotationally connected with the corresponding electrode plate 4, and the rotation axis of the water retaining member 61 is parallel to the rotation axis of the rotating member 3. The end of the water baffle 61 away from the electrode plate 4 extends along the arc track towards the end of the arc track close to the electrode plate 4 away from the water baffle 61, and the opening of the arc track of the water baffle 61 faces the arc concave surface of the corresponding electrode plate 4. At this time, the water retaining member 61 moves along with the movement of the electrode plate 4 to play a role in retaining water for the electrode plate 4, so that the probability of contact between hospital wastewater and the end face of the electrode plate 4, which is close to one end of the mesh enclosure 5, is reduced; simultaneously, the stirring effect can be carried out on the hospital wastewater in the cavity 11, so that the distribution of the organic pollutants which are difficult to degrade and are soluble in the hospital wastewater is more uniform.
One side of the water guard 61 has a guide surface 611 for guiding the flow of the wastewater, and the guide surface 611 is located at the front side of the water guard 61 in the moving direction of the electrode plate 4. The end of the guiding surface 611 far away from the corresponding electrode plate 4 is close to the mesh enclosure 5, and a space exists between the guiding surface and the mesh enclosure 5. In the process that the water baffle 61 moves along with the movement of the electrode plate 4, the hospital wastewater in contact with the front surface of the water baffle 61 flows towards the direction close to the mesh enclosure 5 under the guidance of the guide surface 611, and the hospital wastewater can flow around the mesh enclosure 5 through the space between the water baffle 61 and the mesh enclosure 5, so that the hospital wastewater can uniformly contact with the catalyst to perform electrocatalytic oxidation reaction.
The cleaning member 62 is fixedly installed at one end of the water blocking member 61 rotatably connected with the electrode plate 4, and the cleaning member 62 is in principle that one end of the water blocking member 61 contacts and abuts against the cavity wall on the peripheral side of the cavity 11. The cleaning member 62 has elastic deformability, and the cleaning member 62 is pressed while being in contact with the wall of the cavity 11 on the peripheral side. At this time, the cleaning member 62 moves along with the movement of the electrode plate 4, and can scrape off the substances such as the soluble hardly degradable organic pollutants and the catalyst attached to the cavity wall on the peripheral side of the cavity 11; at the same time, substances such as the dissoluble organic pollutants and the catalysts which are difficult to degrade can be reduced to enter the space between the corresponding electrode plate 4 and the cavity wall at the periphery side of the cavity 11, and the scraped substances such as the dissoluble organic pollutants and the catalysts which are difficult to degrade can be guided to move along the guide surface 611 towards the direction close to the mesh enclosure 5. In this embodiment, the cleaning member 62 is preferably a rubber material product.
Referring to fig. 5 and 6, it is further preferable that the water retaining member 61 has a limit to rotate relative to the corresponding electrode plate 4, one end of the electrode plate 4 near the rotational connection position of the corresponding water retaining member 61 has a first limit surface 41 and a second limit surface 42, the first limit surface 41 is connected to the second limit surface 42, and the first limit surface 41 is located at one side of the second limit surface 42 near the mesh enclosure 5.
When the water retaining member 61 rotates to the limit position towards the end, which is close to the corresponding electrode plate 4 and is far away from the rotational connection position of the water retaining member 61, the water retaining member 61 is abutted against the first limiting surface 41, at the moment, the acting force of the water retaining member 61 on the hospital waste water is minimum in the process of moving along with the movement of the electrode plate 4, the effect of guiding the hospital waste water to flow around the mesh enclosure 5 by the guide surface 611 is strongest, the extrusion degree of the cleaning member 62 is greatest, namely the acting force of the cleaning member 62 on the cavity wall on the periphery side of the cavity 11 is greatest, namely the cleaning effect of the cleaning member 62 on the cavity wall on the periphery side of the cavity 11 is strongest;
when the water retaining member 61 rotates to the limit position towards the end far away from the corresponding electrode plate 4 and away from the rotational connection position of the water retaining member 61, the water retaining member 61 is abutted against the second limiting surface 42, the acting force of the hospital wastewater is greatest in the process that the water retaining member 61 moves along with the electrode plate 4, the effect of guiding the hospital wastewater to flow around the mesh enclosure 5 by the guiding surface 611 is weakest, the extrusion degree of the cleaning member 62 is smallest, namely the acting force of the cleaning member 62 to the cavity wall on the periphery side of the cavity 11 is smallest, namely the cleaning member 62 has the weakest cleaning effect to the cavity wall on the periphery side of the cavity 11.
In general, the water blocking member 61 keeps the position against the first limiting surface 41 moving along with the movement of the corresponding electrode plate 4, and the auxiliary assembly 6 has both the strongest effect of guiding hospital wastewater and the strongest effect of cleaning the peripheral side cavity wall of the cavity 11; when the friction force between the cleaning member 62 and the peripheral side cavity wall of the cavity 11 is increased due to the fact that the solubility of the part of the area on the peripheral side cavity wall of the cavity 11 is firm, and substances such as organic pollutants and catalysts are hard to be degraded, the cleaning member 62 drives the water retaining member 61 to rotate towards one end, away from the rotating connection position of the water retaining member 61, of the corresponding electrode plate 4; when the water retaining member 61 rotates, the acting force of the hospital wastewater is increased in the process of moving along with the movement of the electrode plate 4, and the water retaining member 61 is driven to rotate and reset.
The water blocking member 61 rotates in a short time and then resets in a state of being attached to and abutted against the first limiting surface 41, and the cleaning member 62 moves along with the water blocking member, so that substances such as relatively firm soluble refractory organic pollutants, catalysts and the like attached to a partial area on the cavity wall on the side of the cavity 11 can be scraped off; and at the same time, the normal activity of the electrode plate 4 is not affected.
The implementation principle of the electrocatalytic oxidation hospital wastewater treatment device provided by the embodiment of the application is as follows:
after entering the cavity 11 through the water inlet 12, the hospital wastewater contacts with the catalyst in the mesh enclosure 5, and a direct current electric field is formed between the two electrode plates 4, so as to perform electrocatalytic oxidation treatment on the soluble refractory organic pollutants in the hospital wastewater;
simultaneously, the two electrode plates 4 move in the cavity 11, and the hospital wastewater in the cavity 11 is stirred through the two auxiliary components 6, so that the effect of electrocatalytic oxidation of the dissoluble refractory organic pollutants in the hospital wastewater is more uniform; in addition, substances such as the soluble refractory organic pollutants, the catalyst and the like attached to the cavity wall on the peripheral side of the cavity 11 can be scraped off, and the probability of attaching the substances such as the soluble refractory organic pollutants, the catalyst and the like to the surface of the electrode plate 4 to be hardened is reduced;
after the electrocatalytic oxidation treatment is finished in the cavity 11, the hospital wastewater is discharged from the water outlet 13 and is sent to other subsequent hospital wastewater treatment devices.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (3)
1. The electrocatalytic oxidation hospital wastewater treatment device comprises a treatment box (1) and two electrode plates (4), wherein a cavity (11) is formed in the treatment box (1), a water inlet (12) and a water outlet (13) which are communicated with the cavity (11) are formed in the treatment box (1), and the two electrode plates (4) are arranged in the cavity (11) and are respectively positioned at two sides of the cavity (11), and the electrocatalytic oxidation hospital wastewater treatment device is characterized by further comprising a driving piece (2), a rotating piece (3) and a mesh enclosure (5);
the driving piece (2) is arranged at the top of the processing box (1), the rotating piece (3) is positioned at the top of the cavity (11), the rotating piece (3) is rotationally connected with the processing box (1), the rotating axis of the rotating piece (3) is vertical and is centered relative to the cavity (11), the two electrode plates (4) are connected with the rotating piece (3), and the driving piece (2) can drive the rotating piece (3) to rotate;
the mesh enclosure (5) is positioned in the cavity (11) and between the two electrode plates (4), a containing cavity (51) for storing a catalyst is formed in the mesh enclosure (5), and a plurality of meshes (52) communicated with the containing cavity (51) are formed in the mesh enclosure (5);
the shape of the cavity (11) is a cylinder structure, and the electrode plate (4) is an arc plate structure; the axis of rotation of the rotating piece (3) coincides with the axis of the cavity (11), the axis of the arc track of the electrode plate (4) coincides with the axis of the cavity (11), and a space exists between the electrode plate (4) and the peripheral side cavity wall of the cavity (11);
the device also comprises two auxiliary components (6), wherein the two auxiliary components (6) are respectively arranged on the two electrode plates (4), and the auxiliary components (6) are positioned at one end of the electrode plates (4) along the rotation direction of the rotating piece (3);
the auxiliary assembly (6) comprises a cleaning piece (62), the cleaning piece (62) is connected with the electrode plate (4), and the cleaning piece (62) is contacted and abutted with the peripheral side cavity wall of the cavity (11);
the auxiliary assembly (6) further comprises a water baffle (61), one end of the water baffle (61) is connected with the electrode plate (4), and the other end of the water baffle (61) is close to the mesh enclosure (5);
one end of the water baffle (61) along the rotation direction of the rotating member (3) is provided with a guide surface (611) for guiding the flow of wastewater, and one end of the guide surface (611) away from the electrode plate (4) is close to one end of the electrode plate (4) away from the water baffle (61);
the cleaning piece (62) is made of rubber materials, the cleaning piece (62) is connected with the water retaining piece (61), the water retaining piece (61) is rotationally connected with the electrode plate (4), and the rotation axis of the water retaining piece (61) is parallel to the rotation axis of the rotating piece (3);
the water retaining member (61) is limited in the rotating process relative to the electrode plate (4), and when the water retaining member (61) rotates to a limit position in the direction approaching the mesh enclosure (5), the acting force of the water retaining member (61) on waste water is maximum, and the acting force of the cleaning member (62) on the peripheral side cavity wall of the cavity (11) is minimum; when the water retaining member (61) rotates to a limit position in a direction away from the mesh enclosure (5), the acting force of the water retaining member (61) on waste water is minimum, and the acting force of the cleaning member (62) on the peripheral side cavity wall of the cavity (11) is maximum.
2. An electrocatalytic oxidation hospital wastewater treatment device as claimed in claim 1, wherein the mesh enclosure (5) is centrally located in the cavity (11).
3. The electrocatalytic oxidation hospital wastewater treatment device as claimed in claim 2, wherein the mesh enclosure (5) is in a cylindrical structure, and the axis of the mesh enclosure (5) coincides with the axis of the cavity (11).
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