A device and method for treating high-concentration organic wastewater by low-temperature low-pressure advanced oxidation

Abstract

The application discloses a device and method for treating high-concentration organic wastewater by low-temperature and low-pressure advanced oxidation, and belongs to the technical field of wastewater treatment. The device comprises a treatment cavity, a feed inlet is connected to one side of the upper end of the treatment cavity, and a discharge valve is connected to one side of the lower end of the treatment cavity. Through linkage of the lifting assembly and the cavity cleaning assembly, the inner cavity and the surface of the filter hole are self-cleaned without disassembly, the first electric telescopic rod drives the circular lifting block to ascend, the second circular cleaning block at the top end of the circular lifting block is accurately embedded into the second filter hole, and the circular cleaning block moves upwards along the first filter hole, which pushes out the residual grease and impurities in the hole upwards, realizes complete dredging in a physical pushing mode, avoids secondary pollution caused by grease emulsification due to traditional backwashing, and then the cross cleaning block rotates under the driving of the second driving motor, so that the grease residues on the surface of the filter cavity and the circular cleaning block are synchronously scraped off, thereby reducing the probability of blockage of the filter assembly and reducing operation and maintenance costs.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and more specifically, to an apparatus and method for treating high-concentration organic wastewater using low-temperature, low-pressure advanced oxidation. Background Technology

[0002] Industrial production generates a large amount of high-concentration organic wastewater. This type of wastewater usually contains complex organic pollutants and generally has excessively high chemical oxygen demand (COD) values. It is also characterized by high suspended solids and high oil content. Direct discharge of such wastewater will seriously pollute the aquatic environment and disrupt the ecological balance. Currently, low-temperature and low-pressure advanced oxidation technology has become one of the core technologies for treating this type of recalcitrant wastewater due to its mild reaction conditions and high oxidation efficiency.

[0003] Large particulate impurities and grease in high-concentration organic wastewater are the main interfering factors in low-temperature, low-pressure advanced oxidation units. On the one hand, if impurities enter the oxidation reactor, they will clog the catalyst pores and cover the active sites, resulting in a sharp drop in the generation of strong oxidants and a decrease in oxidation efficiency. On the other hand, because grease is less dense than water, it is easy to float in the reactor and attach to the gas-liquid interface, hindering oxygen dissolution and mass transfer, further weakening the oxidation effect. Existing pretreatment equipment mostly adopts a "single filtration" or "static oil separation" design. The former can only remove large particulate impurities and cannot effectively separate grease. Moreover, the filter pores are easily clogged by grease and fine impurities, requiring frequent shutdowns for cleaning. The latter relies on the natural floating and stratification of grease, resulting in a long treatment cycle, low efficiency, and inability to remove fine impurities simultaneously. As a result, subsequent oxidation units still face the dual interference of "impurities and grease," making it difficult to meet the needs of continuous industrial treatment. Summary of the Invention

[0004] The purpose of this invention is to provide an apparatus and method for treating high-concentration organic wastewater using low-temperature, low-pressure advanced oxidation, in order to solve the problems mentioned in the background art.

[0005] A device for treating high-concentration organic wastewater by low-temperature and low-pressure advanced oxidation includes a treatment chamber, an inlet connected to one side of the upper end of the treatment chamber, an outlet valve connected to one side of the lower end of the treatment chamber, a storage chamber connected to the outer surface of the treatment chamber, a surface cleaning component connected to the top of the treatment chamber, and a treatment component installed directly below the surface cleaning component.

[0006] The processing component includes a filter component, an outlet component is connected to the upper outer side of the filter component, and a lifting component is connected to the lower end of the filter component.

[0007] The filter assembly includes a filter cavity, an annular groove is formed on the outer surface of the filter cavity, and a plurality of first filter holes are formed on the upper surface of the filter cavity. Each first filter hole has a first rectangular sliding groove formed at both ends, and an internal cleaning assembly is connected to the inner cavity of each first filter hole.

[0008] The lifting assembly includes a lifting block, with a first electric telescopic rod passing through each edge of the lifting block, and a plurality of circular lifting blocks connected to the upper surface of the lifting block, with a plurality of second circular cleaning blocks connected to the top of each circular lifting block.

[0009] Preferably, the cavity cleaning assembly includes a circular cleaning block, the upper surface of which has a plurality of second filter holes, and the outer ends of the circular cleaning block are connected to first rectangular sliders, the middle part of each first rectangular slider is provided with a circular guide rod, and the upper end of the first reset spring is connected to the lower surface of the first rectangular slider.

[0010] Preferably, a first return spring is connected to the lower end surface of each first rectangular slider, a sealing moving strip is connected to the upper side surface of the end of each first rectangular slider near the circular cleaning block, and a second return spring is connected to the two side surfaces of the end of each sealing moving strip away from the first rectangular slider. A second rectangular groove is provided on the outer side of the second return spring, and the sealing moving strip plays a sealing role against the first rectangular groove.

[0011] Preferably, the discharge assembly includes a semi-circular fixed block, one end of which is connected to a semi-circular moving block. An internal gear ring is connected to the inner surface of the semi-circular moving block, and a first gear meshes in the inner cavity of the internal gear ring. The lower end of the first gear is connected to a first drive motor. The semi-circular fixed block is fixed to the inner wall surface of the processing cavity, and the upper surface of the semi-circular moving block contacts the lower surface of the semi-circular fixed block. A plurality of first filter holes are distributed in a circle, and the included angle between the adjacent first filter holes at the outermost edges is sixty degrees. The first drive motor and the first gear are located at the included angle.

[0012] Preferably, several circular lifting blocks are fitted with several first filter holes, several second circular cleaning blocks are fitted with several second filter holes, the first rectangular slider is installed in the inner cavity of the first rectangular slide groove, and the internal toothed ring is installed in the inner cavity of the annular groove. When the semi-arc moving block moves completely to the lower end inner cavity of the semi-arc fixed block, it forms an arc-shaped discharge groove. The edge of the arc-shaped discharge groove is inclined and communicates with the storage cavity.

[0013] Preferably, the cleaning assembly includes a hydraulic pump, the output end of which is connected to a hydraulic rod, the lower end of which is connected to a circular connecting block, and a second drive motor is connected to the inner cavity of the circular connecting block.

[0014] Preferably, the output end of the second drive motor is connected to a circular rotating block, the lower end of the circular rotating block is connected to a cross cleaning block, and an infrared sensor is installed in the processing cavity.

[0015] Preferably, a method for treating high-concentration organic wastewater using a low-temperature, low-pressure advanced oxidation device includes the following steps:

[0016] S1. First, the organic wastewater to be treated is transported into the treatment chamber through the feed inlet. After entering the treatment chamber, the wastewater flows to the filter assembly under gravity and passes through the "double-layer filter structure". This allows the wastewater to first come into contact with the first filter hole in the filter chamber, and large particles with a pore size smaller than the first filter hole are intercepted on the surface of the filter chamber. The wastewater that meets the pore size requirements, along with small molecule organic matter and oil, enters the inner cavity of the first filter hole. The wastewater that enters the inner cavity of the first filter hole continues to pass through the second filter hole opened in the circular cleaning block, which further filters out even smaller fine impurities. Finally, the clean wastewater gathers at the bottom of the treatment chamber and is transported to the subsequent low-temperature and low-pressure advanced oxidation reaction unit through the discharge valve.

[0017] S2. Since the density of grease is less than that of water, during the wastewater filtration process, grease cannot pass through the filter holes quickly with the water flow. It gradually floats and adheres to the upper surface of the filter chamber, the upper surface of the circular cleaning block, and the inner cavity of the first and second filter holes, forming a grease residue layer. During the organic wastewater treatment process, if the infrared sensor detects that the organic wastewater in the treatment chamber has completed the secondary filtration operation, or detects that the height of the organic wastewater to be treated in the treatment chamber has reached the threshold range, the system will automatically start the cleaning process.

[0018] S3. The first electric telescopic rod is then retracted, causing the lifting block, the circular lifting block, and the second circular cleaning block to move upwards. During this upward movement, the circular lifting block contacts the lower surface of the circular cleaning block, causing the second circular cleaning block to align with the second filter hole. In this process, the second circular cleaning block pushes out any remaining fine impurities and grease from the hole until its upper surface is flush with the second circular cleaning block, thoroughly clearing the second filter hole. Then, as the circular lifting block continues to move upwards, it generates an upward thrust on the circular cleaning block, allowing the second filter hole to... A first reset spring extends, a second reset spring retracts, and the first rectangular slider moves upward along the circular guide rod until it reaches the upper surface of the first rectangular groove. The first electric telescopic rod then stops. At this point, the upper surface of the circular cleaning block is level with the upper surface of the filter chamber. The system then starts the first drive motor and drives the first gear to rotate, which in turn drives the internal gear ring and the semi-arc moving block to rotate along the annular groove until the semi-arc moving block moves completely into the lower cavity of the semi-arc fixed block, forming an arc-shaped discharge groove.

[0019] S4. During the movement of the semi-circular moving block, the lower edge of the semi-circular fixed block cleans the grease remaining on the upper surface of the semi-circular fixed block. When the semi-circular moving block is fully moved to the lower inner cavity of the semi-circular fixed block, the system starts the hydraulic pump, which drives the hydraulic rod to extend downward until the lower end of the cross cleaning block contacts the upper surface of the filter chamber. Then, the system starts the second drive motor to drive the circular rotating block and the cross cleaning block to rotate and clean the upper surface of the filter chamber and the circular cleaning block. The cleaned grease and impurities will enter the storage chamber through the arc-shaped discharge groove of the filter chamber until the grease and impurities remaining on the surface of the filter chamber are completely cleaned. Then, all components are reset, and all operations are completed.

[0020] Compared with the prior art, the advantages of this invention are:

[0021] In this invention, the lifting assembly and the internal cleaning assembly work together to achieve self-cleaning of the filter cavity and surface without disassembly. The first electric telescopic rod drives the circular lifting block to rise, and the second circular cleaning block at its top is precisely embedded in the second filter hole. The circular cleaning block moves upward along the first filter hole, pushing out residual grease and impurities in the hole, achieving thorough unblocking through physical pushing. This avoids secondary pollution caused by grease emulsification due to traditional backwashing. Then, the cross cleaning block rotates under the drive of the second drive motor, which can simultaneously scrape off grease residue on the surface of the filter cavity and the circular cleaning block, thereby reducing the probability of filter component blockage and reducing maintenance costs.

[0022] In this invention, the dual-layer filtration structure of the filter assembly, adapted to the density of grease, allows wastewater to pass sequentially through the first and second filter holes, achieving graded removal of large particles and fine impurities, preventing impurities from entering the subsequent oxidation reactor and clogging the catalyst pores. Furthermore, by utilizing the characteristic that grease has a lower density than water, the grease naturally floats and adheres to the filter chamber, the surface of the circular cleaning block, and the inner cavity of the filter holes during the filtration process. Subsequently, it is collected into the storage chamber by the surface cleaning assembly and the discharge assembly, thereby eliminating the grease's obstruction of gas-liquid mass transfer in the oxidation unit and improving wastewater treatment efficiency.

[0023] In this invention, by integrating filtration, oil removal, self-cleaning, and storage functions into a single processing chamber 1, there is no need to set up separate equipment such as bar screens and oil separators, effectively reducing the equipment's footprint. At the same time, the arc-shaped discharge groove is directly connected to the storage chamber, ensuring that the cleaned grease and impurities are collected quickly and avoiding secondary accumulation. The circular distribution design of the filter components and the one-to-one correspondence structure of the lifting components ensure that the various parts of the equipment are subjected to uniform force, making it suitable for industrial continuous feeding of high-concentration organic wastewater. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the processing component structure of the present invention;

[0027] Figure 4 This is a schematic diagram of the filter assembly structure of the present invention;

[0028] Figure 5 This is a schematic diagram of the cavity cleaning assembly structure of the present invention;

[0029] Figure 6 This is a schematic diagram of the material discharge assembly structure of the present invention;

[0030] Figure 7 This is a schematic diagram of the lifting component structure of the present invention;

[0031] Figure 8 This is a schematic diagram of the surface cleaning component structure of the present invention.

[0032] Explanation of the numbers in the diagram: 1. Processing chamber; 2. Feed inlet; 3. Discharge valve; 4. Storage chamber; 5. Surface cleaning assembly; 501. Hydraulic pump; 502. Hydraulic rod; 503. Circular connecting block; 504. Second drive motor; 505. Circular rotating block; 506. Cross cleaning block; 6. Processing assembly; 601. Filter assembly; 602. Discharge assembly; 603. Lifting assembly; 604. Filter chamber; 605. Annular groove; 606. First filter hole; 607. First rectangular chute; 60 8. Cavity cleaning assembly; 609. Circular cleaning block; 610. Second filter hole; 611. First rectangular slider; 612. Circular guide rod; 613. First return spring; 614. Sealing moving strip; 615. Second return spring; 616. Semi-arc fixed block; 617. Semi-arc moving block; 618. Internal gear ring; 619. First gear; 620. First drive motor; 621. Lifting block; 622. First electric telescopic rod; 623. Circular lifting block; 624. Second circular cleaning block. Detailed Implementation

[0033] Example: Please refer to Figure 1 and Figure 2 A device for treating high-concentration organic wastewater by low-temperature and low-pressure advanced oxidation includes a treatment chamber 1, an inlet 2 connected to one side of the upper end of the treatment chamber 1, an outlet valve 3 connected to one side of the lower end of the treatment chamber 1, a storage chamber 4 connected to the outer surface of the treatment chamber 1, a surface cleaning component 5 connected to the top of the treatment chamber 1, and a treatment component 6 installed directly below the surface cleaning component 5.

[0034] Please see Figure 3 The processing component 6 includes a filter component 601, a discharge component 602 is connected to the outer side of the upper end of the filter component 601, and a lifting component 603 is connected to the lower end of the filter component 601.

[0035] Please see Figure 4 The filter assembly 601 includes a filter cavity 604. An annular groove 605 is provided on the outer surface of the filter cavity 604, and a plurality of first filter holes 606 are provided on the upper surface of the filter cavity 604. A first rectangular groove 607 is provided at both ends of each first filter hole 606, and an internal cleaning assembly 608 is connected to the inner cavity of each first filter hole 606.

[0036] Please see Figure 7 The lifting assembly 603 includes a lifting block 621, with a first electric telescopic rod 622 passing through each edge of the lifting block 621, and a plurality of circular lifting blocks 623 connected to the upper surface of the lifting block 621, with a plurality of second circular cleaning blocks 624 connected to the top of each circular lifting block 621.

[0037] Specifically, through the linkage between the lifting assembly 603 and the cavity cleaning assembly 608, the internal cavity and surface of the filter hole are self-cleaned without disassembly. The first electric telescopic rod 622 drives the circular lifting block 623 to rise, and the second circular cleaning block 624 at its top is precisely embedded into the second filter hole 610. The circular cleaning block 609 moves upward along the first filter hole 606, which pushes out the residual grease and impurities in the hole, achieving thorough unblocking by physical pushing. This avoids the secondary pollution caused by grease emulsification caused by traditional backwashing. Then, the cross cleaning block 506 rotates under the drive of the second drive motor 504, which can simultaneously scrape off the grease residue on the surface of the filter cavity 604 and the circular cleaning block 609, thereby reducing the probability of clogging of the filter assembly 601 and reducing maintenance costs.

[0038] Please see Figure 5 The cavity cleaning assembly 608 includes a circular cleaning block 609. The upper surface of the circular cleaning block 609 is provided with a plurality of second filter holes 610. The outer sides of both ends of the circular cleaning block 609 are connected to first rectangular sliders 611. A circular guide rod 612 passes through the middle part of each first rectangular slider 611. The upper end of the first reset spring 613 is connected to the lower surface of the first rectangular slider 611.

[0039] Please see Figure 5 Each first rectangular slider 611 has a first return spring 613 connected to its lower end surface, and a sealing moving strip 614 connected to the upper side surface of the end of each first rectangular slider 611 near the circular cleaning block 609. Each sealing moving strip 614 has a second return spring 615 connected to the two sides of the end away from the first rectangular slider 611. A second rectangular groove is provided on the outer side of the second return spring 615, and the sealing moving strip 614 seals the first rectangular groove 607.

[0040] Please see Figure 6 The discharge assembly 602 includes a semi-circular fixed block 616, one end of which is connected to a semi-circular moving block 617. An internal gear ring 618 is connected to the inner surface of the semi-circular moving block 617. A first gear 619 meshes in the inner cavity of the internal gear ring 618. A first drive motor 620 is connected to the lower end of the first gear 619. The semi-circular fixed block 616 is fixed to the inner wall surface of the processing cavity 1. The upper surface of the semi-circular moving block 617 contacts the lower surface of the semi-circular fixed block 616. A plurality of first filter holes 606 are distributed in a circle. The angle between the outermost adjacent first filter holes 606 is 60 degrees. The first drive motor 620 and the first gear 619 are located at the angle.

[0041] Several circular lifting blocks 623 are matched with several first filter holes 606, several second circular cleaning blocks 624 are matched with several second filter holes 610, a first rectangular slider 611 is installed in the inner cavity of the first rectangular slide groove 607, and an internal toothed ring 618 is installed in the inner cavity of the annular groove 605. When the semi-arc moving block 617 moves completely to the lower inner cavity of the semi-arc fixed block 616, it forms an arc-shaped discharge groove. The edge of the arc-shaped discharge groove is inclined and communicates with the storage cavity 4.

[0042] Specifically, through the dual-layer filtration structure of the filter component 601 and its design adapted to the density of grease, wastewater can pass sequentially through the first filter hole 606 and the second filter hole 610, achieving graded removal of large particles and fine impurities, and preventing impurities from entering the subsequent oxidation reactor and clogging the catalyst pores. Furthermore, by utilizing the characteristic that the density of grease is less than that of water, the grease can naturally float and adhere to the surface of the filter chamber 604, the circular cleaning block 609, and the inner cavity of the filter holes during the filtration process. Subsequently, it is collected into the storage chamber 4 by the surface cleaning component 5 and the discharge component 602, thereby eliminating the obstruction of gas-liquid mass transfer by grease in the oxidation unit and thus improving the wastewater treatment efficiency.

[0043] Please see Figure 8 The surface cleaning component 5 includes a hydraulic pump 501, the output end of which is connected to a hydraulic rod 502, the lower end of which is connected to a circular connecting block 503, and a second drive motor 504 connected to the inner cavity of the circular connecting block 503.

[0044] Please see Figure 8 The output end of the second drive motor 504 is connected to a circular rotating block 505, and the lower end of the circular rotating block 505 is connected to a cross cleaning block 506. An infrared sensor is installed in the processing cavity 1.

[0045] Specifically, by integrating filtration, oil removal, self-cleaning, and storage functions into a single processing chamber 1, there is no need to set up separate equipment such as bar screens and oil separators, effectively reducing the equipment's footprint. At the same time, the arc-shaped discharge groove is directly connected to the storage chamber 4, ensuring that the cleaned grease and impurities are collected quickly and avoiding secondary accumulation. The circular distribution design of the filter components 601 and the one-to-one correspondence structure of the lifting components 603 ensure that the various parts of the equipment are subjected to uniform force, making it suitable for industrial continuous feeding of high-concentration organic wastewater.

[0046] A method for treating high-concentration organic wastewater using a low-temperature, low-pressure advanced oxidation device includes the following steps:

[0047] S1. First, the organic wastewater to be treated is transported to the treatment chamber 1 through the feed inlet 2. After entering the treatment chamber, the wastewater flows to the filter assembly under the action of gravity and passes through the "double-layer filter structure" in sequence. This allows the wastewater to first come into contact with the first filter hole 606 in the filter chamber 604, and large particles with a pore size smaller than the first filter hole are intercepted on the surface of the filter chamber. The wastewater that meets the pore size requirements, along with small molecule organic matter and oil, enters the inner cavity of the first filter hole 606. The wastewater that enters the inner cavity of the first filter hole 606 continues to pass through the second filter hole 610 opened in the circular cleaning block 609, which further filters out finer impurities with even smaller pore sizes. Finally, the clean wastewater gathers at the bottom of the treatment chamber 1 and is transported to the subsequent low-temperature and low-pressure advanced oxidation reaction unit through the discharge valve 3.

[0048] S2. Since the density of grease is less than that of water, during the wastewater filtration process, grease cannot pass through the filter holes quickly with the water flow. It gradually floats and adheres to the upper surface of the filter chamber 604, the upper surface of the circular cleaning block 609, and the inner cavity of the first filter hole 606 and the second filter hole 610, forming a grease residue layer. During the organic wastewater treatment process, if the infrared sensor detects that the organic wastewater in the treatment chamber 1 has completed the secondary filtration operation, or detects that the height of the organic wastewater to be treated in the treatment chamber 1 has reached the threshold range, the system automatically starts the cleaning process.

[0049] S3. The first electric telescopic rod 622 is retracted, which will cause the lifting block 621, the circular lifting block 623, and the second circular cleaning block 624 to move upward. During the upward movement of the circular lifting block 623, it will contact the lower surface of the circular cleaning block 609, thereby causing the second circular cleaning block 624 to overlap with the second filter hole 610. During this process, the second circular cleaning block 624 pushes out the fine impurities and grease remaining in the hole until the upper surface of the second circular cleaning block 624 is flush with the upper surface of the circular cleaning block 609, thus thoroughly unblocking the second filter hole 610. Then, as the circular lifting block 623 continues to move upward, it will generate an upward thrust on the circular cleaning block 609, thereby causing the first reset... Spring 613 extends, second return spring 615 retracts, and first rectangular slider 611 moves upward along circular guide rod 612 until it moves to the upper surface of first rectangular groove 607, and first electric telescopic rod 622 stops. At this time, the upper surface of circular cleaning block 609 is made to be at the same level as the upper surface of filter chamber 604. Then the system starts first drive motor 620 and drives first gear 619 to rotate, which in turn drives internal gear ring 618 and semi-arc moving block 617 to rotate along annular groove 605 until semi-arc moving block 617 moves completely into the lower cavity of semi-arc fixed block 616 and forms an arc-shaped discharge groove.

[0050] S4. During the movement of the semi-circular moving block 617, the lower edge of the semi-circular fixed block 616 cleans the grease remaining on the upper surface of the semi-circular fixed block 617. When the semi-circular moving block 617 moves completely to the lower inner cavity of the semi-circular fixed block 616, the system starts the hydraulic pump 501, which drives the hydraulic rod 502 to extend downward until the lower end of the cross cleaning block 506 contacts the upper surface of the filter chamber 604. Then, the system starts the second drive motor 504 to drive the circular rotating block 505 and the cross cleaning block 506 to rotate and clean the upper surfaces of the filter chamber 604 and the circular cleaning block 609. The cleaned grease and impurities enter the storage chamber 4 through the arc-shaped discharge groove of the filter chamber 604 until the grease and impurities remaining on the surface of the filter chamber 604 are completely cleaned. Then, all components are reset, and all operations are completed.

[0051] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for treating high-concentration organic wastewater by low-temperature low-pressure advanced oxidation, comprising a treatment cavity (1), characterized in that: The upper end of the processing cavity (1) is connected with an inlet (2), and the lower end of the processing cavity (1) is connected with an outlet valve (3); the outer surface of the processing cavity (1) is connected with a storage cavity (4); the top end of the processing cavity (1) is connected with a surface cleaning assembly (5), and the processing assembly (6) is installed below the surface cleaning assembly (5); The processing assembly (6) comprises a filtering assembly (601), and the upper end of the filtering assembly (601) is connected with an outlet assembly (602); the lower end of the filtering assembly (601) is connected with a lifting assembly (603); The filtering assembly (601) comprises a filtering cavity (604), and the outer surface of the filtering cavity (604) is provided with an annular groove (605); the upper end surface of the filtering cavity (604) is provided with a plurality of first filtering holes (606), and the two ends of each first filtering hole (606) are provided with a first rectangular sliding groove (607); and the inner cavity of each first filtering hole (606) is connected with an inner-cavity cleaning assembly (608); The lifting assembly (603) comprises a lifting block (621), and the first electric telescopic rod (622) penetrates through each edge of the lifting block (621); the upper end surface of the lifting block (621) is connected with a plurality of circular lifting blocks (623), and the top end of each circular lifting block (623) is connected with a plurality of second circular cleaning blocks (624); The inner-cavity cleaning assembly (608) comprises a circular cleaning block (609), and the upper end surface of the circular cleaning block (609) is provided with a plurality of second filtering holes (610); the two ends of the outer side of the circular cleaning block (609) are connected with a first rectangular sliding block (611), and the circular guide rod (612) penetrates through the middle part of each first rectangular sliding block (611); The lower end surface of each first rectangular sliding block (611) is connected with a first reset spring (613); the upper side surface of one end of each first rectangular sliding block (611) close to the circular cleaning block (609) is connected with a sealing moving strip (614); and the two side surfaces of one end of each sealing moving strip (614) away from the first rectangular sliding block (611) are connected with a second reset spring (615); The outlet assembly (602) comprises a semicircular fixed block (616), and one end of the semicircular fixed block (616) is connected with a semicircular moving block (617); the inner side surface of the semicircular moving block (617) is connected with an inner tooth ring (618); the inner cavity of the inner tooth ring (618) is engaged with a first gear (619); and the lower end of the first gear (619) is connected with a first driving motor (620). A plurality of the circular lifting blocks (623) are matched with a plurality of first filter holes (606), a plurality of the second circular cleaning blocks (624) are matched with a plurality of second filter holes (610), the first rectangular sliding block (611) is installed in the inner cavity of the first rectangular sliding groove (607), and the inner tooth ring (618) is installed in the inner cavity of the annular groove (605).

2. The device for treating high-concentration organic wastewater by low-temperature low-pressure advanced oxidation according to claim 1, characterized in that: The surface cleaning assembly (5) comprises a hydraulic pump (501), the output end of the hydraulic pump (501) is connected with a hydraulic rod (502), the lower end of the hydraulic rod (502) is connected with a circular connecting block (503), and the inner cavity of the circular connecting block (503) is connected with a second driving motor (504).

3. The device for treating high-concentration organic wastewater by low-temperature low-pressure advanced oxidation according to claim 2, characterized in that: The output end of the second driving motor (504) is connected with a circular rotating block (505), the lower end of the circular rotating block (505) is connected with a cross cleaning block (506), and an infrared sensor is installed in the processing cavity (1).

4. A processing method of a device for treating high-concentration organic wastewater by low-temperature and low-pressure advanced oxidation, according to the device for treating high-concentration organic wastewater by low-temperature and low-pressure advanced oxidation in claim 3, comprising the following steps, characterized by: S1, first, the organic wastewater needing to be treated is sent into the processing cavity (1) through the feeding port (2), after the wastewater enters the processing cavity, it flows to the filter assembly under the action of gravity, and sequentially passes through the "double-layer filter structure", so that the wastewater first contacts the first filter hole (606) in the filter cavity (604), and the large-particle impurities with a pore size smaller than that of the first filter hole are intercepted on the surface of the filter cavity, so that the wastewater and small-molecule organic matter and oil entering the first filter hole (606) meet the pore size requirement, the wastewater in the inner cavity of the first filter hole (606) continues to pass through the second filter hole (610) in the circular cleaning block (609), and further filters out fine impurities with a smaller pore size, and finally the clean wastewater is collected at the bottom of the processing cavity (1) and is sent to the subsequent low-temperature and low-pressure advanced oxidation reaction unit through the discharge valve (3); S2, because the density of oil is smaller than that of water, during the wastewater filtration process, the oil cannot quickly pass through the filter hole with the water flow, gradually floats and adheres to the upper surface of the filter cavity (604), the upper surface of the circular cleaning block (609), the inner cavities of the first filter hole (606) and the second filter hole (610), and forms an oil residue layer, and during the organic wastewater treatment process, when the infrared sensor detects that the organic wastewater in the processing cavity (1) has completed the secondary filtration operation, or detects that the height of the organic wastewater to be treated in the processing cavity (1) reaches the threshold range, the system automatically starts the cleaning process. S3、And start the first electric telescopic rod (622) to shrink, will drive the lifting block (621), the circular lifting block (623) and the second circular cleaning block (624) to move upwards, and the circular lifting block (623) will contact with the lower end surface of the circular cleaning block (609) in the process of moving upwards, so that the second circular cleaning block (624) coincides with the second filter hole (610), in this process, the second circular cleaning block (624) will push out the fine impurities and oil remaining in the hole upwards, until the upper end surface of the second circular cleaning block (624) is flush with the upper end surface of the circular cleaning block (609), realizing the complete dredging of the second filter hole (610), then with the circular lifting block (623) continues to move upwards, will produce an upward thrust on the circular cleaning block (609), so that the first return spring (613) stretches, the second return spring (615) contracts, and the first rectangular sliding block (611) moves upwards along the circular guide rod (612) until the first rectangular sliding block (611) moves to the upper end surface of the first rectangular sliding groove (607), and stops the first electric telescopic rod (622), at this time, the upper end surface of the circular cleaning block (609) is at the same level with the upper end surface of the filter cavity (604), then the system will start the first drive motor (620), and drive the first gear (619) to rotate, and then drive the inner gear ring (618) and the semi-arc moving block (617) to rotate along the annular groove (605), until the semi-arc moving block (617) completely moves into the lower end inner cavity of the semi-arc fixed block (616), and forms an arc discharge groove; S4、In the process of moving the semi-arc moving block (617), the lower end surface edge of the semi-arc fixed block (616) will clean the oil remaining on the upper end surface of the semi-arc fixed block (617), when the semi-arc moving block (617) completely moves into the lower end inner cavity of the semi-arc fixed block (616), the system will start the hydraulic pump (501), so as to drive the hydraulic rod (502) to stretch downwards, until the lower end of the cross cleaning block (506) contacts the upper end surface of the filter cavity (604), then the system starts the second drive motor (504) to drive the circular rotating block (505) and the cross cleaning block (506) to rotate, and cleans the upper end surface of the filter cavity (604) and the circular cleaning block (609), the cleaned oil and impurities will enter the storage cavity (4) through the arc discharge groove of the filter cavity (604), until the oil and impurities remaining on the surface of the filter cavity (604) are completely cleaned, then reset each part in turn, thus ending all operations.

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