Industrial wastewater treatment device and treatment method

Abstract

This invention relates to the field of wastewater treatment, and discloses an industrial wastewater treatment device and method. The industrial wastewater treatment device includes a treatment tank with an upward opening, and a filter cylinder is horizontally rotatably mounted on the top of the treatment tank. The filter cylinder has a liquid supply pipe and a scraping mechanism for scraping the inner circumferential wall of the filter cylinder. A stirring mechanism is located at the bottom of the treatment tank to treat the filtrate from the filter cylinder. The stirring mechanism includes a telescopic stirring element with spray holes. This invention uses a scraper to remove impurities from the inner wall of the filter cylinder, while the outer wall is cleaned by air jets from the spray holes, which adjust the angle and vibrate with the circular wave area, achieving both cleaning and continuous filtration of the filter cylinder. Hot gas drives the telescopic stirring element to extend and retract while simultaneously jetting air, creating double stirring, improving the mixing degree of the filtrate and the reagent, and increasing the reaction efficiency. The hot gas is also used a second time for jetting air onto the outer wall, which softens sticky impurities, dries the filter holes, improves the unblocking rate, and extends the filtration cycle.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and more specifically, to an industrial wastewater treatment apparatus and treatment method. Background Technology

[0002] Industrial wastewater includes production wastewater, industrial sewage, and cooling water. It refers to the wastewater and waste liquid generated during industrial production processes. It contains industrial production materials, intermediate products, by-products, and pollutants generated during production that are lost with the water. Industrial wastewater is diverse and complex in composition. Because industrial wastewater often contains a variety of toxic substances, it pollutes the environment and poses a great threat to human health. Therefore, it is necessary to develop comprehensive utilization to turn harm into benefit. According to the composition and concentration of pollutants in the wastewater, appropriate purification measures should be taken for treatment before it can be discharged.

[0003] At the front end of industrial wastewater treatment, solid impurities are usually intercepted by filtration devices to create conditions for subsequent processes. However, the filter media is easily covered and clogged by pollutants during continuous operation, resulting in a decrease in throughput. The system can only be forced to stop for backwashing or manual cleaning, making it difficult to achieve continuous water intake and significantly reducing treatment efficiency. Summary of the Invention

[0004] This invention provides an industrial wastewater treatment device and method, solving the technical problem in related technologies where continuous filtration reduces wastewater treatment efficiency.

[0005] This invention provides an industrial wastewater treatment device, including a treatment tank with an upward opening, and a filter cylinder horizontally rotatably mounted on the top of the treatment tank;

[0006] The filter cylinder is equipped with a liquid supply pipe and a scraping mechanism for scraping the inner circumferential wall of the filter cylinder.

[0007] The bottom of the processing tank is equipped with a stirring mechanism to process the filtrate from the filter cartridge;

[0008] The stirring mechanism includes a telescopic stirring component, and the telescopic stirring component is provided with a spray hole. When hot gas is introduced into the stirring mechanism, the telescopic stirring component extends and retracts to change its length and sprays air through the spray hole to assist stirring.

[0009] The outer periphery of the filter cylinder forms an annular wave region, and the annular wave region is driven and coordinated with a cleaning mechanism. The cleaning mechanism is provided with a cleaning hole. The cleaning hole uses the gas ejected from the spray hole to spray air from the outer periphery of the filter cylinder to the inner periphery. As the filter cylinder rotates, the spray angle is adjusted. At the same time, the cleaning mechanism impacts the outer wall of the filter cylinder to perform vibration cleaning.

[0010] As a further optimization of the present invention, a partition plate is installed in the middle of the processing box, and a drain valve is provided at the bottom of the partition plate.

[0011] As a further optimization of the present invention, the scraping mechanism includes a scraper and a guide shell. One end of the guide shell extends into the interior of the filter cylinder and is fixedly connected to the scraper. The scraper is used to scrape the inner circumference of the filter cylinder.

[0012] As a further optimization of the present invention, there is a gap between the scraper and the inner peripheral wall of the filter cylinder, and the scraper is inclined outward.

[0013] As a further optimization of the present invention, the stirring mechanism further includes a rotating tube and a driving component. The rotating tube is rotatably mounted on the filter cylinder and driven by the driving component. The rotating tube is connected to the telescopic stirring component. One end of the rotating tube is closed, and the other end is used to supply hot gas.

[0014] As a further optimization of the present invention, the telescopic stirring component includes a sleeve, a moving tube, and a return spring. The sleeve is connected to the rotating tube. The spray hole is opened on the moving tube and the sleeve. One end of the moving tube is closed, and the other end slides into the interior of the sleeve. A baffle is fitted at the closed end of the moving tube. The return spring is located inside the sleeve. One end of the return spring is fixed to the rotating tube, and the other end is fixed to the insertion end of the moving tube.

[0015] As a further optimization of the present invention, the driving component includes a drive motor, and gears that drive each other are mounted on the rotating tube and the drive shaft of the drive motor.

[0016] As a further optimization of the present invention, the cleaning mechanism further includes a rotating cleaning pipe, a connecting pipe, a rotary joint, and a recovery component. The cleaning hole is opened on the rotating cleaning pipe. The rotating cleaning pipe is adapted to the annular wave area and connected to the recovery component. The connecting pipe is fitted onto the partition plate. The air inlet end of the connecting pipe collects the gas ejected from the nozzle, and the outlet end is connected to the rotating cleaning pipe through the rotary joint.

[0017] As a further optimization of the present invention, the recovery component includes a sleeve, a return spring, a push rod, and a bearing. One end of the push rod is rotatably connected to the rotating cleaning tube through the bearing, and the other end slides into the interior of the sleeve and is connected to the sleeve through the return spring.

[0018] An industrial wastewater treatment method, using the aforementioned industrial wastewater treatment device, includes the following steps:

[0019] S1, Liquid supply filtration:

[0020] The supply pipe delivers industrial wastewater into the filter cylinder, which rotates to filter the water. The filtrate eventually falls to the bottom of the treatment tank, where a scraper removes impurities from the inner wall of the filter cylinder and discharges it through the guide shell.

[0021] S2. Stirring process:

[0022] Start the driving component of the stirring mechanism, the rotating pipe drives the telescopic stirring component to rotate, hot gas is introduced to make the telescopic stirring component extend and retract, and jet gas is sprayed through the nozzle to assist stirring;

[0023] S3. External wall cleaning:

[0024] The gas from the nozzle is sent to the rotating cleaning pipe via the connecting pipe and rotary joint. The rotation of the filter cylinder drives the rotating cleaning pipe to adjust the injection angle. At the same time, the air is sprayed from the cleaning hole, and the filter cylinder intermittently impacts the cylinder wall to vibrate and clear the blockage.

[0025] S4. Drainage:

[0026] The treated liquid is discharged through the drain valve.

[0027] The beneficial effects of this invention are as follows:

[0028] 1. The industrial wastewater treatment device of the present invention achieves continuous cleaning of the filter cylinder through the coordinated cleaning of inner wall scraping and outer wall air jet vibration. The scraper on the inner wall rotates with the filter cylinder, scraping off the trapped solid impurities in real time and discharging them through the guide shell, thus avoiding clogging of the inner wall filter holes. The cleaning mechanism at the outer wall uses gas from the nozzle to spray from the outer periphery to the inner periphery, and adjusts the spray angle with the annular wave area of ​​the filter cylinder. Combined with the vibration generated by intermittent impact, it efficiently removes the impurities clogging the outer wall, thus achieving continuous filtration.

[0029] 2. In the industrial wastewater treatment device of the present invention, the rotating cleaning pipe of the cleaning mechanism is always in contact with the annular wave area of ​​the filter cylinder through the return component. When the filter cylinder rotates, the annular wave area drives the rotating cleaning pipe to automatically adjust the spray angle, ensuring that the cleaning hole can cover all areas of the outer periphery of the filter cylinder, avoiding the blind spots existing in traditional fixed-angle cleaning, and improving the cleaning effect.

[0030] 3. The industrial wastewater treatment device of the present invention features a telescopic stirring component that can automatically extend and retract under the drive of hot gas. This, combined with the hot gas ejected from the nozzle, creates a dual mixing effect of mechanical stirring and gas disturbance. The telescopic design allows the stirring range to cover the bottom of the treatment tank. The hot gas jet not only accelerates the convection of the filtrate but also increases the reaction temperature, thereby improving the uniformity of mixing between the filtrate and the reagents (such as flocculants and oxidants), accelerating the reaction rate, and ultimately improving the compliance rate of purification indicators (such as COD and suspended solids).

[0031] 4. The industrial wastewater treatment device of the present invention introduces hot gas into the stirring mechanism. After the driving telescopic stirring component assists in stirring, the gas that is not completely consumed is collected through the connecting pipe and transported to the cleaning mechanism for air jet cleaning of the outer wall. The filter pore blockage of the filter cartridge is mostly viscous impurities in industrial wastewater (such as oil, colloids, and fine suspended aggregates). These impurities are easy to adhere to the inner wall of the filter pore at room temperature, and simple air jet cleaning at room temperature is difficult to completely remove them. When the heated gas is sprayed out through the cleaning hole, the high temperature can soften the viscous blockage and reduce its adhesion to the filter pore wall. Combined with the impact force of the gas, the blockage can be quickly flushed out of the filter pore. Compared with air jet cleaning at room temperature, the filter pore unblocking rate is improved, and the filtration flux is reduced due to long-term accumulation of blockage. At the same time, the hot gas can dry the residual moisture in the filter pore, prevent the blockage from caking again in a humid environment, and extend the effective filtration cycle of the filter cartridge. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of an industrial wastewater treatment device proposed in this invention.

[0033] Figure 2 This is a schematic diagram of the internal structure of an industrial wastewater treatment device proposed in this invention.

[0034] Figure 3 This is a schematic diagram of the internal structure of an industrial wastewater treatment device proposed in this invention from another perspective.

[0035] Figure 4 This is a schematic diagram of the structure of the filter cartridge in an industrial wastewater treatment device proposed in this invention.

[0036] Figure 5 This is a schematic diagram of the internal structure of the sleeve in an industrial wastewater treatment device proposed in this invention.

[0037] Figure 6 This is a side sectional view of the casing structure in an industrial wastewater treatment device proposed in this invention.

[0038] In the picture:

[0039] 1. Processing box;

[0040] 2. Filter cartridge; 21. Circular wave area;

[0041] 3. Liquid supply pipe;

[0042] 4. Scraping mechanism; 41. Scraper; 42. Material guide shell;

[0043] 5. Stirring mechanism; 501. Spray nozzle; 51. Rotary pipe; 52. Sleeve; 53. Moving pipe; 54. Return spring; 55. Drive motor; 56. Gear; 57. Baffle plate; 58. Rotary air supply connector;

[0044] 6. Cleaning mechanism; 601. Cleaning hole; 61. Rotating cleaning tube; 62. Sleeve; 63. Return spring; 64. Push rod; 65. Bearing; 66. Connecting tube; 67. Rotary joint;

[0045] 7. Divider;

[0046] 8. Drain valve;

[0047] 9. Discharge valve;

[0048] 10. Heating wire;

[0049] 11. Feeding valve. Detailed Implementation

[0050] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0051] Example 1

[0052] like Figures 1 to 3 , Figure 5 and Figure 6 As shown, an industrial wastewater treatment device according to an embodiment of the present invention includes a treatment tank 1 with an upward opening, a filter cylinder 2 horizontally rotatably mounted on the top of the treatment tank 1, a partition plate 7 installed in the middle of the treatment tank 1, and a drain valve 8 provided at the bottom of the partition plate 7.

[0053] A feeding valve 11 is connected to one side of the processing box 1 to add the required material into the processing box 1;

[0054] The filter cylinder 2 is equipped with a liquid supply pipe 3 and a scraping mechanism 4 for scraping the inner circumferential wall of the filter cylinder 2.

[0055] A stirring mechanism 5 is provided at the bottom of the processing tank 1 to process the filtrate from the filter cartridge 2;

[0056] The stirring mechanism 5 includes a telescopic stirring component, and the telescopic stirring component is provided with a spray hole 501. When hot gas is introduced into the stirring mechanism 5, the telescopic stirring component extends and retracts to change its length and sprays gas through the spray hole 501 to assist in stirring.

[0057] The outer periphery of the filter cylinder 2 forms an annular wave region 21, and the annular wave region 21 is driven and coordinated with a cleaning mechanism 6. The cleaning mechanism 6 is provided with a cleaning hole 601. The cleaning hole 601 uses the gas ejected from the spray hole 501 to spray air from the outer periphery of the filter cylinder 2 to the inner periphery. As the filter cylinder 2 rotates, the spray angle is adjusted. At the same time, the cleaning mechanism 6 impacts the outer wall of the filter cylinder 2 to perform vibration cleaning.

[0058] Industrial wastewater enters the rotating filter cylinder 2 through the supply pipe 3. Solid impurities are trapped on the inner wall of the filter cylinder 2. The filtrate permeates through the filter cylinder 2 and enters the area above the partition plate 7 for storage. The scraping mechanism 4 scrapes away impurities from the inner wall of the filter cylinder 2. When the filtrate stored in the area above the partition plate 7 reaches the set amount, it is discharged into the bottom of the filter cylinder 2 through the drain valve 8. After the filtrate enters the bottom of the treatment tank 1, the stirring mechanism 5 introduces hot gas. The hot gas drives the telescopic stirring component to extend and retract, changing its length. At the same time, it sprays out from the nozzle 501 to assist in stirring and improve the reaction efficiency of the filtrate. Some of the gas sprayed from the nozzle 501 enters the cleaning mechanism 6. When the filter cylinder 2 rotates, the annular wave area 21 drives the cleaning mechanism 6 to adjust the spray angle of the cleaning hole 601, so that the gas is sprayed from the outer circumference of the filter cylinder 2 to the inner circumference. At the same time, the cleaning mechanism 6 impacts the outer wall of the filter cylinder 2 to generate vibration, clearing the impurities that clog the filter holes of the filter cylinder 2.

[0059] It enables simultaneous filtration, mixing, and cleaning without stopping the machine for unclogging, improving the continuity of wastewater treatment. The telescopic mixing element, combined with jet agitation, expands the mixing range and enhances the mixing effect of filtrate and reagents. Dual unclogging ensures stable flow of filter cartridge 2 and avoids a decrease in treatment efficiency.

[0060] like Figure 2 and Figure 4 As shown, the scraping mechanism 4 includes a scraper 41 and a guide shell 42. One end of the guide shell 42 extends into the interior of the filter cylinder 2 and is fixedly connected to the scraper 41. The scraper 41 is used to scrape the inner circumference of the filter cylinder 2. The guide shell 42 is fixedly connected to the filter cylinder 2 through a mounting plate. There is a gap between the scraper 41 and the inner circumferential wall of the filter cylinder 2, and the scraper 41 is inclined outward.

[0061] During the rotation of the filter cylinder 2, the scraper 41 moves relative to the inner wall of the filter cylinder 2, scraping off the solid impurities trapped on the inner wall. The scraped-off impurities fall into the guide shell 42 and are discharged outside the filter cylinder 2 along the inclined channel of the guide shell 42, realizing the collection and removal of impurities, clearing impurities from the inner wall of the filter cylinder 2 in real time, preventing impurities from accumulating and clogging the filter holes, and ensuring stable filtration throughput.

[0062] like Figure 3 As shown, the stirring mechanism 5 also includes a rotating tube 51 and a driving component. The rotating tube 51 is rotatably mounted on the filter cylinder 2 and is driven by the driving component. The rotating tube 51 is connected to the telescopic stirring component. One end of the rotating tube 51 is closed, and the other end is used to supply hot gas.

[0063] The drive unit is activated, which drives the rotating tube 51 to rotate around its own axis. The rotating tube 51 then drives the telescopic stirring component connected to it to rotate synchronously. At the same time, hot gas is introduced into the bottom of the rotating tube 51 through the rotating air supply connector 58. The hot gas enters the interior of the telescopic stirring component through the rotating tube 51, pushing the telescopic stirring component to extend and retract, thereby realizing the dynamic adjustment of the stirring range. The hot gas drives the telescopic stirring component to extend and retract, expanding the stirring coverage area and improving the uniformity of filtrate mixing.

[0064] like Figure 3 and Figure 6 As shown, the telescopic mixing component includes a sleeve 52, a moving tube 53, and a return spring 54. The sleeve 52 is connected to the rotating tube 51. The spray hole 501 is opened on the moving tube 53 and the sleeve 52. One end of the moving tube 53 is closed, and the other end slides into the interior of the sleeve 52. A baffle 57 is fitted at the closed end of the moving tube 53. The return spring 54 is located inside the sleeve 52. One end of the return spring 54 is fixed to the rotating tube 51, and the other end is fixed to the insertion end of the moving tube 53.

[0065] Hot gas enters the sleeve 52 through the rotating pipe 51, pushing the moving pipe 53 to slide out of the sleeve 52 against the elastic force of the return spring 54, extending the overall length of the telescopic stirring component. When the hot gas pressure decreases, the return spring 54 resets and pulls the moving pipe 53 back into the sleeve 52, shortening its length. During the telescopic process, hot gas is ejected from the nozzle 501, which, in conjunction with the rotation of the telescopic stirring component, performs jet stirring of the filtrate. At the same time, the baffle 57 at the closed end of the moving pipe 53 moves with the moving pipe 53, further disturbing the liquid flow and enhancing the mixing effect.

[0066] The sliding fit between the sleeve 52 and the moving tube 53 enables length adjustment and expands the stirring range; the return spring 54 ensures that the telescopic stirring component can automatically reset; the jet nozzle 501 and the baffle 57 have a dual effect of jetting and turbulence, which greatly improves the filtrate mixing efficiency and shortens the processing time.

[0067] The baffle plate 57 at the closed end of the moving pipe 53 rotates synchronously with the telescopic stirring component, forming an irregular vortex in the filtrate, breaking the laminar flow state, increasing the contact area between the reagent and the wastewater, avoiding the problem of insufficient reaction caused by excessively high or low local reagent concentration, and further improving the purification effect, especially for high-concentration industrial wastewater (such as chemical and dyeing wastewater).

[0068] Specifically, the driving components include a drive motor 55, a rotor tube 51, and gears 56 that drive each other on the drive shaft of the drive motor 55.

[0069] Start the drive motor 55. The drive motor 55 drives the gear 56 on it to rotate. Through the meshing transmission of the gear 56, the power is transmitted to the gear 56 on the rotating tube 51, which in turn drives the rotating tube 51 to rotate, and finally realizes the rotation and stirring of the telescopic stirring component.

[0070] like Figures 3 to 5 As shown, the cleaning mechanism 6 also includes a rotating cleaning pipe 61, a connecting pipe 66, a rotary joint 67, and a recovery component. The cleaning hole 601 is opened on the rotating cleaning pipe 61. The rotating cleaning pipe 61 is adapted to the annular wave area 21 and connected to the recovery component. The connecting pipe 66 is fitted on the partition plate 7. The air inlet end of the connecting pipe 66 collects the gas ejected from the nozzle 501, and the outlet end is connected to the rotating cleaning pipe 61 through the rotary joint 67.

[0071] Part of the gas ejected from nozzle 501 is collected at the inlet end of connecting pipe 66 and transported to rotary joint 67 via connecting pipe 66. Heating wire 10 is installed inside connecting pipe 66, and then introduced into rotating cleaning pipe 61 via rotary joint 67. When filter cylinder 2 rotates, the annular wave area 21 acts to rotate cleaning pipe 61 synchronously. The return component cooperates with rotating cleaning pipe 61 to press against annular wave area 21, so that cleaning hole 601 continuously changes the spray direction as filter cylinder 2 rotates. Gas is ejected from cleaning hole 601 and cleans filter holes from the outer circumference to the inner circumference of filter cylinder 2. Since the blown air is hot air, the cleaning effect is increased. At the same time, rotating cleaning pipe 61 intermittently contacts and impacts the outer wall of filter cylinder 2 during movement.

[0072] The connecting pipe 66 cooperates with the rotary joint 67 to achieve stable gas delivery and flexible rotation of the rotating cleaning pipe 61; the return component ensures that the rotating cleaning pipe 61 always fits the annular wave area 21, ensuring accurate adjustment of the spray angle; the combination of air jet cleaning and impact vibration effectively removes impurities clogging the outer periphery of the filter cartridge 2, ensuring filtration efficiency.

[0073] Specifically, the return component includes a sleeve 62, a return spring 63, a stop rod 64, and a bearing 65. One end of the stop rod 64 is rotatably connected to the rotating cleaning tube 61 through the bearing 65, and the other end slides into the inside of the sleeve 62 and is connected to the sleeve 62 through the return spring 63.

[0074] When the annular wave region 21 of the filter cartridge 2 acts on the rotating cleaning tube 61, the rotating cleaning tube 61 drives the abutment rod 64 to slide within the sleeve 62, compressing or stretching the return spring 63. When the protrusion or depression of the annular wave region 21 moves, the return spring 63 returns to its original position, pushing the abutment rod 64 to drive the rotating cleaning tube 61 back to the position that fits the annular wave region 21. The bearing 65 allows the rotating cleaning tube 61 to rotate freely at the end of the abutment rod 64, ensuring that the angle of the rotating cleaning tube 61 can be adjusted flexibly.

[0075] Example 2

[0076] Based on Example 1, an industrial wastewater treatment method, using the aforementioned industrial wastewater treatment device, includes the following steps:

[0077] S1, Liquid supply filtration:

[0078] The supply pipe 3 sends industrial wastewater into the filter cylinder 2. The filter cylinder 2 rotates to filter, and the filtrate finally falls to the bottom of the treatment tank 1. The scraper 41 scrapes off the impurities on the inner wall of the filter cylinder 2 and discharges it through the guide shell 42.

[0079] S2. Stirring process:

[0080] Start the drive unit of the stirring mechanism 5, the rotating pipe 51 drives the telescopic stirring component to rotate, hot gas is introduced to make the telescopic stirring component extend and retract, and the nozzle 501 sprays air to assist stirring.

[0081] S3. External wall cleaning:

[0082] Gas from nozzle 501 is sent to rotating cleaning pipe 61 via connecting pipe 66 and rotary joint 67. The rotation of filter cylinder 2 drives rotating cleaning pipe 61 to adjust the injection angle. While cleaning nozzle 601 sprays gas, filter cylinder 2 intermittently impacts the cylinder wall to vibrate and clear blockage.

[0083] S4. Drainage:

[0084] The treated liquid is discharged through discharge valve 9.

[0085] The embodiments of the present invention have been described above, but the embodiments are not limited to the specific implementation methods described above. The specific implementation methods described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the embodiments described above, all of which are within the protection scope of the embodiments described above.

Claims

1. An industrial wastewater treatment device, comprising a treatment tank (1) with an upwardly opening, characterized in that: The top of the processing box (1) is equipped with a filter cylinder (2) that rotates horizontally. The filter cylinder (2) is provided with a liquid supply pipe (3) and a scraping mechanism (4) for scraping the inner circumferential wall of the filter cylinder (2). The bottom of the processing tank (1) is equipped with a stirring mechanism (5) to process the filtrate from the filter cylinder (2); The stirring mechanism (5) includes a telescopic stirring component, and the telescopic stirring component is provided with a spray hole (501). When hot gas is introduced into the stirring mechanism (5), the telescopic stirring component extends and retracts to change its length and sprays gas through the spray hole (501) to assist in stirring. The outer periphery of the filter cylinder (2) forms an annular wave region (21), and the annular wave region (21) is driven and coordinated with a cleaning mechanism (6). The cleaning mechanism (6) is provided with a cleaning hole (601). The cleaning hole (601) uses the gas ejected from the spray hole (501) to spray air from the outer periphery of the filter cylinder (2) to the inner periphery. As the filter cylinder (2) rotates, the spray angle is adjusted. At the same time, the cleaning mechanism (6) impacts the outer wall of the filter cylinder (2) to perform vibration cleaning. The stirring mechanism (5) also includes a rotating tube (51) and a driving component. The rotating tube (51) is rotatably mounted on the filter cylinder (2) and driven by the driving component. The rotating tube (51) is connected to the telescopic stirring component. One end of the rotating tube (51) is closed, and the other end is used to supply hot gas. The telescopic stirring component includes a sleeve (52), a moving tube (53), and a return spring (54). The sleeve (52) is connected to the rotating tube (51). The spray hole (501) is opened on the moving tube (53) and the sleeve (52). One end of the moving tube (53) is closed, and the other end slides into the inside of the sleeve (52). A baffle (57) is fitted at the closed end of the moving tube (53). The return spring (54) is located inside the sleeve (52). One end of the return spring (54) is fixed to the rotating tube (51), and the other end is fixed to the insertion end of the moving tube (53). The cleaning mechanism (6) also includes a rotating cleaning pipe (61), a connecting pipe (66), a rotary joint (67), and a recovery component. The cleaning hole (601) is opened on the rotating cleaning pipe (61). The rotating cleaning pipe (61) is adapted to the annular wave area (21) and connected to the recovery component. The connecting pipe (66) is fitted on the partition plate (7). The air inlet end of the connecting pipe (66) collects the gas ejected from the nozzle (501), and the outlet end is connected to the rotating cleaning pipe (61) through the rotary joint (67). The recovery component includes a sleeve (62), a return spring (63), a push rod (64), and a bearing (65). One end of the push rod (64) is rotatably connected to the rotating cleaning tube (61) through the bearing (65), and the other end slides into the inside of the sleeve (62) and is connected to the sleeve (62) through the return spring (63).

2. The industrial wastewater treatment device according to claim 1, characterized in that: A partition plate (7) is installed in the middle of the processing box (1), and a drain valve (8) is provided at the bottom of the partition plate (7).

3. The industrial wastewater treatment device according to claim 1, characterized in that: The scraping mechanism (4) includes a scraper (41) and a guide shell (42). One end of the guide shell (42) extends into the interior of the filter cylinder (2) and is fixedly connected to the scraper (41). The scraper (41) is used to scrape the inner circumference of the filter cylinder (2).

4. The industrial wastewater treatment device according to claim 3, characterized in that: There is a gap between the scraper (41) and the inner peripheral wall of the filter cylinder (2), and the scraper (41) is inclined outward.

5. An industrial wastewater treatment device according to claim 1, characterized in that: The driving component includes a drive motor (55), and gears (56) that drive each other are mounted on the drive shaft of the rotating tube (51) and the drive motor (55).

6. An industrial wastewater treatment method, employing an industrial wastewater treatment device as described in any one of claims 1 to 5, characterized in that: Includes the following steps: S1, Liquid supply filtration: The supply pipe (3) sends industrial wastewater into the filter cylinder (2). The filter cylinder (2) rotates to filter, and the filtrate eventually falls to the bottom of the treatment tank (1). The scraper (41) scrapes off the impurities on the inner wall of the filter cylinder (2) and discharges it through the guide shell (42). S2. Stirring process: Start the driving component of the stirring mechanism (5), the rotating pipe (51) drives the telescopic stirring component to rotate, hot gas is introduced to make the telescopic stirring component extend and retract, and the nozzle (501) sprays air to assist stirring; S3. External wall cleaning: Gas from the nozzle (501) is sent to the rotating cleaning pipe (61) via the connecting pipe (66) and the rotary joint (67). The filter cylinder (2) rotates, driving the rotating cleaning pipe (61) to adjust the spray angle. At the same time, the cleaning hole (601) sprays gas and the filter cylinder (2) intermittently impacts the cylinder wall to vibrate and clear the blockage. S4. Drainage: The treated liquid is discharged through the discharge valve (9).

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