Treatment device and treatment method for shallow groundwater pollution

Abstract

The invention relates to the technical field of water pollution treatment, and discloses a treatment device and a treatment method for shallow groundwater pollution, the treatment device for shallow groundwater pollution comprises a ground, the treatment well is arranged in the ground, the slag discharging well is arranged on one side of the treatment well, the lifting assembly is arranged above the treatment well, the replacing assembly is arranged above the slag discharging well, and the air inlet and outlet assembly is arranged above the treatment well and the slag discharging well. As the two driven gears are meshed, the two driven shafts rotate reversely along with the two driven gears, the two external scraping plates are driven to scrape scum into the scum discharging groove, the external scraping plates rotate and meanwhile accord with the whole water surface, the internal scraping plates can slide in the external scraping plates through the telescopic springs, the lifting water baffle is repeatedly moved up and down, and multiple times of scum scraping are conducted; the effect of cleaning the scum in time is achieved, and the attention on water resource protection in the environmental protection concept is reflected.

Description

Technical Field

[0001] The present invention relates to the technical field of water pollution control, and in particular to a device and method for controlling shallow groundwater pollution. Background Art

[0002] With the rise of environmental awareness and the intensification of pollution, the control of shallow groundwater pollution has become increasingly critical. The pollution is hidden and requires a combination of physical, chemical and biological methods. In the early days, ex situ remediation using extraction treatment was mostly used, which was inefficient and costly. In recent years, new technologies such as in situ chemical oxidation and biological remediation have emerged. They can treat pollutants in situ, which is environmentally friendly, low-cost, and effective, reducing secondary pollution and improving remediation efficiency. Modern treatment devices integrate monitoring and control systems to ensure safe and effective remediation. At the same time, multi-stage sewage treatment technology has also been integrated to promote the promotion of environmental protection technologies and assist in the control of shallow groundwater pollution.

[0003] Patent publication number CN118359249A discloses a shallow groundwater pollution treatment device, including a wall, wherein the two side walls of the wall are fixedly mounted with a plurality of partitions, and the side walls of the wall are provided with water inlet grooves at positions between two adjacent partitions, and the interior of each water inlet groove is installed with a trigger assembly and a blocking assembly, and the top of the wall is fixedly mounted with a plurality of treatment boxes having the same number as the water inlet grooves, and the interior of each treatment box is provided with an installation area and a liquid storage area, and the interior of the wall is provided with a plurality of installation cavities. The present invention can avoid cross-contamination of pollutants in different layers of shallow groundwater by quantitatively pumping shallow groundwater in layers, and can ensure the adequacy of shallow groundwater treatment. The replacement of the reaction wall is also relatively convenient. At the same time, the outflow of the treatment agent can be automatically regulated based on the ion concentration of the groundwater, and personnel can be reminded to replace the reaction wall in time.

[0004] The existing technology has the following defects: Failure to promptly clean up scum after pollution control: Scum is generated during the shallow groundwater pollution control process. If it is not promptly cleaned up, the treatment system will be clogged, reducing treatment efficiency and water purification effects. The accumulated scum will also dissolve back into the water, causing secondary pollution and affecting treatment results. In addition, uncleaned scum will occupy treatment space, affecting the treatment capacity of subsequent pollutants, resulting in substandard effluent water quality. At the same time, the scum may contain harmful substances. Long-term exposure to the environment will increase ecological risks and threaten the surrounding environment and biological health. Therefore, it is necessary to set up a device to clean up scum in a timely manner to prevent equipment blockage, maintain smooth water flow, improve treatment efficiency, and help maintain the long-term stable operation of the treatment device, thereby extending the service life of the equipment and reducing environmental risks.

[0005] Unable to automatically adjust equipment operation: Groundwater flow is unstable, and the equipment cannot be operated regularly for treatment. Long-term use of the equipment will lead to low operating efficiency and energy waste. If operators are required to frequently intervene manually, the workload will increase. Therefore, it is necessary to set up a device that can store water to a certain amount to trigger the equipment, improve the equipment's operating efficiency, ensure that it works in the best condition, thereby improving overall production or processing performance, while reducing manual intervention, alleviating the burden on operators, and achieving the effect of improving equipment stability and reliability and reducing energy consumption. Summary of the Invention

[0006] In view of the problems in the existing technology such as the inability to clean up the scum after pollution control in time and the inability to automatically adjust the operation of the equipment, a device and method for treating shallow groundwater pollution are proposed.

[0007] On the one hand, the present application provides a device for treating shallow groundwater pollution, the purpose of which is to: through the provision of a scum removal mechanism and replacement components, timely clean up scum, help maintain the long-term stable operation of the treatment device, and achieve the effect of extending the service life of the equipment and reducing environmental risks; through the provision of a lifting component and an air intake and exhaust component, when the water storage reaches a certain amount, the equipment is triggered to improve the equipment operation efficiency and ensure that it works in the best condition, while reducing manual intervention and alleviating the burden on operators, thereby achieving the effect of improving equipment stability and reliability and reducing energy consumption.

[0008] The technical solution of the present invention is: a device for treating shallow groundwater pollution, comprising a ground surface, a treatment well arranged inside the ground surface, a slag discharge well arranged on one side of the treatment well, a lifting assembly arranged above the treatment well, a replacement assembly arranged above the slag discharge well, an air intake and exhaust assembly arranged above the treatment well and the slag discharge well, and a slag removal mechanism arranged inside the treatment well, wherein a limit plate and two symmetrically arranged first guide frames are fixedly installed on the inner wall of the treatment well, a sediment filter cartridge is fixedly installed on the bottom of the treatment well, a slag discharge trough is provided between the treatment well, the slag discharge well and the limit plate, and the slag removal mechanism comprises a buoyancy barrel slidably connected to the inner wall of the limit plate, and a transverse movement assembly and a scraper assembly are provided inside the buoyancy barrel; The scraper assembly includes two driven shafts rotatably connected to the inner wall of the buoyancy barrel, the tops of the two driven shafts are fixedly connected to driven gears, the two driven gears are in a meshing state, the outer walls of the two driven shafts are fixedly connected to external scrapers, the two external scrapers are both arranged at the bottom of the buoyancy barrel, the inner walls of the external scrapers are slidably connected to the internal scrapers, and a telescopic spring is fixedly connected between the outer wall of the internal scraper and the inner wall of the external scraper.

[0009] By adopting the above scheme, a scraper assembly is set up, and the driven gear therein is driven to rotate by the transverse movement assembly. As the two driven gears are engaged, the two driven shafts rotate in opposite directions, driving the two external scrapers to scrape the scum into the slag discharge trough. While the external scraper rotates, in order to fit the entire water surface, the internal scraper will slide in the external scraper through the telescopic spring, repeatedly moving the lifting water baffle up and down, and performing multiple scrapings, which plays the role of timely cleaning the scum, helps to maintain the long-term stable operation of the treatment device, and achieves the effect of extending the service life of the equipment and reducing environmental risks.

[0010] Furthermore, the transverse movement assembly includes a transverse movement column slidably connected to the inner wall of the buoyancy barrel, and the end of the transverse movement column close to the driven shaft is fixedly connected to a first transverse movement rack, the first transverse movement rack is engaged with one of the driven gears, and the end of the transverse movement column away from the driven shaft is fixedly connected to a second transverse movement rack.

[0011] Furthermore, the inner wall of the buoyancy barrel is rotatably connected to a driving gear, and the driving gear is engaged with the second transverse rack.

[0012] By adopting the above scheme, through the transverse movement assembly and driving gear, after the lifting assembly is triggered to run, the driving gear rotates and drives the transverse movement column to move transversely through the second transverse movement rack, so that the scraper assembly is driven by the first transverse movement rack to perform the scraping operation, which plays the role of transmitting power and repeated movement.

[0013] Furthermore, the lifting assembly includes a lifting water baffle slidably connected between the two first guide frames, and the inner wall of the lifting water baffle is fixedly connected with a driving rack. When the lifting water baffle moves, the driving rack on the lifting water baffle engages with the driving gear.

[0014] Furthermore, the lifting assembly also includes a servo motor installed on the ground, the output gear of the servo motor is engaged with a threaded rod, and the outer wall of the threaded rod is threadedly connected to the inner wall of the lifting water retaining plate.

[0015] By adopting the above scheme, the servo motor starts to run after a period of time after the equipment is triggered, and the output gear of the servo motor drives the lifting water retaining plate to move up through the threaded rod. When the driving rack on the lifting water retaining plate contacts the driving gear, the scraper assembly is driven by the transverse movement assembly to perform the foam scraping operation, thereby providing power.

[0016] Furthermore, two symmetrically arranged second guide frames are fixedly connected to the inner wall of the slag discharge well, and a filter reflux plate is fixedly connected to the bottom of the slag discharge well.

[0017] Furthermore, the replacement component includes a winch fixedly mounted on the ground, the output end of the winch is fixedly connected to a hook, a lifting frame is fixedly mounted below the hook, an activated carbon adsorption block is mounted on the inner wall of the lifting frame, and the activated carbon adsorption block is arranged between the slag discharge trough and the filter reflux plate.

[0018] Furthermore, the air intake and exhaust assembly includes a blower and a suction fan fixedly mounted on the ground, the outer wall of the blower is fixedly connected to a blower duct, the end of the blower duct is fixedly connected to a porous exhaust frame by passing through one of the first guide frames, the outer wall of the suction fan is fixedly connected to a suction duct, the two ends of the suction duct are respectively connected to the other first guide frame and one of the second guide frames, and a plurality of suction holes are opened on the inner walls corresponding to the first guide frame and the second guide frame.

[0019] By adopting the above scheme, through the provided replacement components and air intake and exhaust components, the buoyancy barrel triggers the operation of the equipment when the water level rises to the specified position of the limit plate, and the blower and the suction fan operate simultaneously. The blower outputs compressed air through the blast pipe to the porous exhaust rack, and a large number of tiny bubbles are discharged by the porous exhaust rack. The sewage is treated by the flotation decontamination principle, and scum is formed in the surface water layer, and waste gas is formed in the upper layer of the treatment well. The waste gas is discharged into the suction fan through the suction hole and the suction pipe for collection and treatment, and then cleaned by the scum removal mechanism. The scum falls into the slag discharge well through the slag discharge trough and is adsorbed by the activated carbon adsorption block. The excess water flows back to the groundwater flow path from the filter return plate, and the waste gas flowing with the scum is discharged through the suction hole on the second guide frame. When the activated carbon adsorption block needs to be replaced, the winch is manually operated, and the lifting frame is pulled out of the well through the hook. After the activated carbon adsorption block is replaced, it is put back into the slag discharge well, which plays the role of flotation decontamination.

[0020] Another aspect of the present application provides a method for treating shallow groundwater pollution using a treatment device, which uses a shallow groundwater pollution treatment device and comprises the following steps: Step 1: Groundwater is stored in the sediment filter cartridge; Step 2: The buoyancy bucket triggers the device to operate as the water level rises; Step 3: The intake and exhaust components operate to exhaust and inhale; Step 4: The servo motor drives the lifting water retaining plate to move up and down; Step 5: The driving rack on the lifting water retaining plate drives the transverse column to move transversely; Step 6: The horizontal moving column drives the scraper assembly to scrape the slag into the slag discharge trough; Step 7: Repeat steps 4 to 6 until the water level drops; Step 8: Turn off the equipment, reset the lifting water baffle to store water, and repeat steps 1 to 7; Step 9: Regularly replace components and manually replace the activated carbon adsorption block.

[0021] With the above scheme, water is stored by blocking the lifting water baffle. When the buoyancy bucket reaches the specified position of the limit plate as the water level rises, the equipment is triggered to operate, and the intake and exhaust components perform intake and exhaust processing. After the blower blows air for a period of time, the servo motor runs, and the output gear of the servo motor drives the lifting water baffle to move up through the threaded rod. When the driving rack on the lifting water baffle contacts the driving gear, the second transverse rack drives the transverse column to move transversely, so that the first transverse rack drives one of the driven gears to rotate. Since the two driven gears are engaged, the two driven shafts rotate in opposite directions, driving the two external scrapers to scrape the scum into the discharge In the slag trough, the external scraper rotates while the internal scraper slides in the external scraper through the telescopic spring to fit the entire water surface, repeatedly moving the lifting water baffle up and down to scrape the foam multiple times. The slag falls into the slag discharge well through the slag discharge trough and is adsorbed by the activated carbon adsorption block. The excess water flows back to the groundwater flow path from the filter return plate, and the exhaust gas flowing with the slag is discharged from the suction hole on the second guide frame. After scraping the foam multiple times, the lifting water baffle continues to move upward. At this time, the water output is greater than the water inlet, and the water level moves down. When the buoyancy bucket reaches the specified position of the limit plate as the water level drops, the equipment is triggered to stop running, and it is repeated in sequence.

[0022] Beneficial effects of the present invention: 1. Through the scraper assembly, the driven gear is driven by the transverse assembly to rotate. As the two driven gears are engaged, the two driven shafts rotate in opposite directions, driving the two external scrapers to scrape the scum into the slag discharge trough. While the external scrapers rotate, in order to fit the entire water surface, the internal scrapers will slide in the external scrapers through the telescopic springs, repeatedly moving the water baffle up and down to scrape the foam multiple times, which plays a role in timely cleaning of scum, helps maintain the long-term stable operation of the treatment device, and achieves the effect of extending the service life of the equipment and reducing environmental risks.

[0023] 2. Through the provided lifting components and intake and exhaust components, when the water storage reaches a certain amount, the equipment is triggered, the blower and the suction fan run at the same time, and the blower outputs compressed air through the blast pipe to the porous exhaust rack, and a large number of tiny bubbles are discharged from the porous exhaust rack. The sewage is treated by the flotation decontamination principle, and scum is formed in the surface water layer, and waste gas is formed in the upper layer of the treatment well. The waste gas is discharged into the suction fan through the suction hole and the suction pipe for collection and treatment. After a period of time after the blower blows, the servo motor runs, and the output gear of the servo motor drives the lifting water retaining plate to move up through the threaded rod, thereby improving the operating efficiency of the equipment and ensuring that it works in the best condition. At the same time, it reduces manual intervention and alleviates the burden on operators, thereby achieving the effect of improving equipment stability and reliability and reducing energy consumption.

[0024] 3. Through the replacement components, the slag falls into the slag discharge well through the slag discharge chute and is adsorbed by the activated carbon adsorption block. The excess water flows back to the groundwater flow path from the filter return plate, and the exhaust gas flowing with the slag is discharged through the suction hole on the second guide frame. When the activated carbon adsorption block needs to be replaced, the winch is manually operated, and the lifting frame is pulled out of the well through the hook. After the activated carbon adsorption block is replaced, it is put back into the slag discharge well to maintain the stable operation of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a front view of the main structure of the present invention; Figure 2 It is a schematic diagram of the main structure of the present invention; Figure 3 A top view of the treatment well structure of the present invention; Figure 4 It is a structural schematic diagram of the slag discharge trough of the present invention; Figure 5 This is a structural diagram of the scum removal mechanism of the present invention; Figure 6 It is a partial structural diagram of the buoyancy barrel of the present invention; Figure 7 For the present invention Figure 6 The structural diagram of the enlarged part at A in the middle; Figure 8 A schematic cross-sectional view of the structure of the scraper assembly of the present invention; Figure 9 Schematic diagram of different states of the scraper assembly of the present invention; Figure 10 It is a partial structural diagram of the replacement component of the present invention; Figure 11 It is a partial structural schematic diagram of the intake and exhaust components of the present invention.

[0026] In the picture: 1. Treatment well; 11. First guide frame; 12. Stop plate; 13. Sediment filter cartridge; 2. Slag discharge well; 21. Second guide frame; 22. Slag discharge chute; 23. Filter return plate; 3. Replacement assembly; 31. Winch; 32. Hook; 33. Lifting frame; 34. Activated carbon adsorption block; 4. Inlet and exhaust assembly; 41. Blower; 42. Blower duct; 43. Multi-hole exhaust frame; 44. Suction fan; 45. Suction duct; 46. Suction hole; 5. Lifting assembly; 51. Servo motor; 52. Threaded rod; 53. Lifting water baffle; 54. Drive rack; 6. Scum removal mechanism; 61. Buoyancy barrel; 62. Transverse movement assembly; 621. Transverse movement column; 622. First transverse movement rack; 623. Second transverse movement rack; 63. Scraper assembly; 631. Driven gear; 632. Driven shaft; 633. External scraper; 634. Telescopic spring; 635. Internal scraper; 64. Drive gear. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0028] Example 1, with reference to Figure 1 - Figure 11 , provides a shallow groundwater pollution treatment device, including the ground, a treatment well 1 arranged inside the ground, a slag well 2 arranged on one side of the treatment well 1, a lifting assembly 5 arranged above the treatment well 1, a replacement assembly 3 arranged above the slag well 2, an air intake and exhaust assembly 4 arranged above the treatment well 1 and the slag well 2, and a slag removal mechanism 6 arranged inside the treatment well 1, a limit plate 12 and two symmetrically arranged first guide frames 11 are fixedly installed on the inner wall of the treatment well 1, a sediment filter cartridge 13 is fixedly installed on the bottom of the treatment well 1, a slag trough 22 is opened between the treatment well 1, the slag well 2 and the limit plate 12, the slag removal mechanism 6 includes a buoyancy barrel 61 slidably connected to the inner wall of the limit plate 12, and a transverse movement assembly 62 and a scraper assembly 63 are arranged inside the buoyancy barrel 61.

[0029] Reference Figure 8 The scraper assembly 63 includes two driven shafts 632 that are rotatably connected to the inner wall of the buoyancy barrel 61. The tops of the two driven shafts 632 are fixedly connected to driven gears 631. The two driven gears 631 are in a meshing state. The outer walls of the two driven shafts 632 are fixedly connected to external scrapers 633. The two external scrapers 633 are both arranged at the bottom of the buoyancy barrel 61. The inner walls of the external scrapers 633 are slidably connected to the internal scrapers 635. A telescopic spring 634 is fixedly connected between the outer wall of the internal scraper 635 and the inner wall of the external scraper 633.

[0030] Specifically, the shallow groundwater is between the ground and the upper impermeable layer, and flows from top to bottom. Affected by nature and man, a treatment well 1 is set at the place where water is easily accumulated between the upstream and downstream, and a slag well 2 is set upstream of the treatment well 1, and equipment is installed on the ground. The upper layer of the treatment well 1 is a sealing layer, and the lower layer is a sediment filter cylinder 13. A slag trough 22 is installed between the treatment well 1 and the slag well 2. The two driven shafts 632 are symmetrically arranged inside the buoyancy barrel 61, and the two driven gears 631 are engaged, so that the two external scrapers 633 rotate in opposite directions. The rotation path of the two external scrapers 633 forms a circle, which can scrape off the slag on the surface of the water.

[0031] Through the scraper assembly 63, the transverse movement assembly 62 drives the driven gear 631 to rotate. Since the two driven gears 631 are engaged, the two driven shafts 632 rotate in opposite directions, driving the two external scrapers 633 to scrape the scum into the slag discharge trough 22. While the external scrapers 633 rotate, in order to fit the entire water surface, the internal scraper 635 will slide in the external scraper 633 through the telescopic spring 634, repeatedly moving the lifting water baffle 53 up and down, and performing multiple scrapings, which plays a role in timely cleaning of scum, helps to maintain the long-term stable operation of the treatment device, and achieves the effect of extending the service life of the equipment and reducing environmental risks.

[0032] Reference Figure 7 - Figure 9 The transverse movement assembly 62 includes a transverse movement column 621 which is slidably connected to the inner wall of the buoyancy barrel 61. The end of the transverse movement column 621 close to the driven shaft 632 is fixedly connected to the first transverse movement rack 622, and the first transverse movement rack 622 is engaged with one of the driven gears 631. The end of the transverse movement column 621 away from the driven shaft 632 is fixedly connected to the second transverse movement rack 623. The inner wall of the buoyancy barrel 61 is rotatably connected to the driving gear 64, and the driving gear 64 is engaged with the second transverse movement rack 623.

[0033] Through the transverse movement component 62 and the driving gear 64, after the lifting component 5 is triggered to run, the driving gear 64 rotates and drives the transverse movement column 621 to move transversely through the second transverse movement rack 623, so that the first transverse movement rack 622 drives the scraper component 63 to perform the scraping operation, which plays the role of transmitting power and repeated movement.

[0034] Reference Figure 6 - Figure 7 The lifting assembly 5 includes a lifting water baffle 53 slidably connected between the two first guide frames 11, and the inner wall of the lifting water baffle 53 is fixedly connected with a driving rack 54. When the lifting water baffle 53 moves, the driving rack 54 on the lifting water baffle 53 engages with the driving gear 64. The lifting assembly 5 also includes a servo motor 51 installed on the ground, and the output gear of the servo motor 51 engages with a threaded rod 52. The outer wall of the threaded rod 52 is threadedly connected to the inner wall of the lifting water baffle 53.

[0035] Specifically, the driving rack 54 provided on the lifting water baffle 53 can support the driven shaft 632 to rotate half a circle. By driving the rack 54 up and down, the two external scrapers 633 can be driven to scrape the foam back and forth, and the up and down movement of the lifting water baffle 53 can be set to reduce manual intervention.

[0036] After the device is triggered to operate for a period of time, the servo motor 51 starts to operate, and the output gear of the servo motor 51 drives the lifting water baffle 53 to move upward through the threaded rod 52. When the driving rack 54 on the lifting water baffle 53 contacts the driving gear 64, the transverse movement assembly 62 drives the scraper assembly 63 to perform the foam scraping operation, thereby providing power.

[0037] Reference Figure 10 - Figure 11 The inner wall of the slag discharge pit 2 is fixedly connected with two symmetrically arranged second guide frames 21, and the bottom of the slag discharge pit 2 is fixedly connected with a filter return plate 23. The replacement component 3 includes a winch 31 fixedly mounted on the ground, the output end of the winch 31 is fixedly connected with a hook 32, and a lifting frame 33 is fixedly mounted below the hook 32. An activated carbon adsorption block 34 is installed on the inner wall of the lifting frame 33, and the activated carbon adsorption block 34 is arranged between the slag discharge trough 22 and the filter return plate 23. The air intake and exhaust component 4 includes a blower 41 and a suction fan 44 fixedly mounted on the ground. The outer wall of the blower 41 is fixedly connected with a blast duct 42, and the end of the blast duct 42 is fixedly connected to a porous exhaust frame 43 by passing through one of the first guide frames 11. The outer wall of the suction fan 44 is fixedly connected with a suction duct 45. The two ends of the suction duct 45 are respectively connected to the other first guide frame 11 and one of the second guide frames 21, and a plurality of suction holes 46 are opened on the inner walls corresponding to the first guide frame 11 and the second guide frame 21.

[0038] By setting the replacement component 3 and the air intake and exhaust component 4, the buoyancy barrel 61 triggers the operation of the equipment when it reaches the specified position of the limit plate 12 as the water level rises, and the blower 41 and the suction fan 44 operate at the same time. The blower 41 outputs compressed air through the blast pipe 42 to the porous exhaust rack 43, and a large number of tiny bubbles are discharged from the porous exhaust rack 43. The sewage is treated by the flotation decontamination principle, and scum is formed in the surface water layer, and waste gas is formed in the upper layer of the treatment well 1. The waste gas is discharged into the suction fan 44 through the suction pipe 45 through the suction hole 46 for collection and treatment. The slag is then cleaned by the slag removal mechanism 6. The slag falls into the slag discharge well 2 through the slag discharge trough 22 and is adsorbed by the activated carbon adsorption block 34. The excess water flows back to the groundwater flow path from the filter return plate 23, and the exhaust gas flowing with the slag is discharged from the suction hole 46 on the second guide frame 21. When the activated carbon adsorption block 34 needs to be replaced, the winch 31 is manually operated, and the lifting frame 33 is pulled out of the well through the hook 32. After the activated carbon adsorption block 34 is replaced, it is put back into the slag discharge well 2 to play the role of flotation and decontamination.

[0039] During use, in the initial state, the lifting water baffle 53 is at the bottom of the treatment well 1, and the groundwater is initially filtered by the sediment filter cylinder 13 and then blocked by the lifting water baffle 53 for water storage. When the buoyancy barrel 61 reaches the specified position of the limit plate 12 as the water level rises, the device is triggered to run, and the intake and exhaust components 4 perform intake and exhaust processing. After the blower 41 blows for a period of time, the servo motor 51 runs, and the output gear of the servo motor 51 drives the lifting water baffle 53 to move upward through the threaded rod 52. When the driving rack 54 on the lifting water baffle 53 contacts the driving gear 64, the second transverse rack 623 drives the transverse column 621 to move transversely, so that the first transverse rack 622 drives one of the driven gears 631 to rotate. Since the two driven gears 631 are engaged, the two driven shafts 632 Then it rotates in the opposite direction, driving the two external scrapers 633 to scrape the scum into the slag discharge trough 22. While the external scraper 633 rotates, in order to fit the entire water surface, the internal scraper 635 will slide in the external scraper 633 through the telescopic spring 634, repeatedly moving the lifting water baffle 53 up and down, and performing multiple scraping. The scum falls into the slag discharge well 2 through the slag discharge trough 22 and is adsorbed by the activated carbon adsorption block 34. The excess water flows back to the groundwater flow path from the filter return plate 23, and the exhaust gas flowing with the scum is discharged from the suction hole 46 on the second guide frame 21. After multiple scraping, the lifting water baffle 53 continues to move upward. At this time, the water output is greater than the water inlet, and the water level moves down. When the buoyancy barrel 61 reaches the specified position of the limit plate 12 as the water level drops, the equipment is triggered to stop running, and the process is repeated.

[0040] Example 2, reference Figure 1 - Figure 11 , provides a shallow groundwater pollution treatment device treatment method, using a shallow groundwater pollution treatment device, comprising the following steps: Step 1: Groundwater is stored in the sediment filter cartridge 13; Step 2: The buoyancy barrel 61 triggers the device to operate as the water level rises; Step 3: The air intake and exhaust assembly 4 operates to exhaust and inhale air; Step 4: The servo motor 51 operates to drive the lifting water baffle 53 to move up and down; Step 5: The driving rack 54 on the lifting water baffle 53 drives the transverse column 621 to move transversely; Step 6: The transverse column 621 drives the scraper assembly 63 to scrape the slag into the slag discharge trough 22; Step 7: Repeat steps 4 to 6 until the water level drops; Step 8: Turn off the device, reset the lifting water baffle 53 to store water, and repeat steps 1 to 7; Step nine: Regularly operate the replacement component 3 and manually replace the activated carbon adsorption block 34.

[0041] Working principle of the present invention: In the initial state, the lifting water retaining plate 53 is at the bottom of the treatment well 1. After the groundwater is initially filtered by the sediment filter cylinder 13, it is blocked by the lifting water retaining plate 53 for water storage. When the buoyancy barrel 61 reaches the specified position of the limit plate 12 as the water level rises, the device is triggered to operate.

[0042] The blower 41 and the suction fan 44 operate simultaneously. The blower 41 outputs compressed air through the blower pipe 42 to the porous exhaust rack 43, and a large number of tiny bubbles are discharged from the porous exhaust rack 43. The sewage is treated by the flotation decontamination principle, and scum is formed in the surface water layer, and waste gas is formed in the upper layer of the treatment well 1. The waste gas is discharged into the suction fan 44 through the suction hole 46 and the suction pipe 45 for collection and treatment.

[0043] After the blower 41 blows for a period of time, the servo motor 51 starts to run, and the output gear of the servo motor 51 drives the lifting water baffle 53 to move upward through the threaded rod 52. When the driving rack 54 on the lifting water baffle 53 contacts the driving gear 64, the second transverse rack 623 drives the transverse column 621 to move transversely, so that the first transverse rack 622 drives one of the driven gears 631 to rotate. Since the two driven gears 631 are engaged, the two driven shafts 632 rotate in opposite directions, driving the two external scrapers 633 to scrape the slag into the slag discharge trough 22. While the external scraper 633 rotates, in order to fit the entire water surface, the internal scraper 635 will slide in the external scraper 633 through the telescopic spring 634, repeatedly moving the lifting water baffle 53 up and down, and performing multiple scraping operations.

[0044] The slag falls into the slag discharge well 2 through the slag discharge chute 22 and is adsorbed by the activated carbon adsorption block 34. The excess water flows back to the groundwater flow path through the filter return plate 23, and the exhaust gas flowing with the slag is discharged through the suction hole 46 on the second guide frame 21.

[0045] After scraping foam several times, the lifting water baffle 53 continues to move up. At this time, the water outflow is greater than the water inflow, and the water level moves down. When the buoyancy bucket 61 reaches the specified position of the limit plate 12 as the water level drops, the device is triggered to stop running, and the process is repeated in sequence.

[0046] When the activated carbon adsorption block 34 needs to be replaced, the winch 31 is manually operated to pull the lifting frame 33 out of the well through the hook 32, and the activated carbon adsorption block 34 is replaced and then put back into the slag discharge well 2.

[0047] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A shallow groundwater pollution treatment device, comprising a ground surface, a treatment well (1) arranged inside the ground surface, a slag discharge well (2) arranged on one side of the treatment well (1), a lifting assembly (5) arranged above the treatment well (1), a replacement assembly (3) arranged above the slag discharge well (2), an air intake and exhaust assembly (4) arranged above the treatment well (1) and the slag discharge well (2), and a slag removal mechanism (6) arranged inside the treatment well (1), characterized in that: A limit plate (12) and two symmetrically arranged first guide frames (11) are fixedly installed on the inner wall of the treatment well (1), a sediment filter cartridge (13) is fixedly installed on the bottom of the treatment well (1), a slag discharge trough (22) is provided between the treatment well (1), the slag discharge well (2) and the limit plate (12), and the slag removal mechanism (6) comprises a buoyancy barrel (61) slidably connected to the inner wall of the limit plate (12), and a transverse movement assembly (62) and a scraper assembly (63) are provided inside the buoyancy barrel (61); The scraper assembly (63) includes two driven shafts (632) rotatably connected to the inner wall of the buoyancy barrel (61), the tops of the two driven shafts (632) are fixedly connected to driven gears (631), the two driven gears (631) are in a meshing state, the outer walls of the two driven shafts (632) are fixedly connected to external scrapers (633), the two external scrapers (633) are both arranged at the bottom of the buoyancy barrel (61), the inner walls of the external scrapers (633) are slidably connected to internal scrapers (635), and a telescopic spring (634) is fixedly connected between the outer wall of the internal scraper (635) and the inner wall of the external scraper (633).

2. The shallow groundwater pollution treatment device according to claim 1, characterized in that: The transverse shift assembly (62) includes a transverse shift column (621) slidably connected to the inner wall of the buoyancy barrel (61), one end of the transverse shift column (621) close to the driven shaft (632) is fixedly connected to a first transverse shift rack (622), the first transverse shift rack (622) is meshed with one of the driven gears (631), and one end of the transverse shift column (621) away from the driven shaft (632) is fixedly connected to a second transverse shift rack (623).

3. The shallow groundwater pollution treatment device according to claim 2, characterized in that: The inner wall of the buoyancy barrel (61) is rotatably connected to a driving gear (64), and the driving gear (64) is meshed with the second transverse rack (623).

4. The shallow groundwater pollution treatment device according to claim 3, characterized in that: The lifting assembly (5) comprises a lifting water baffle (53) slidably connected between two first guide frames (11); an inner wall of the lifting water baffle (53) is fixedly connected to a driving rack (54); when the lifting water baffle (53) moves, the driving rack (54) on the lifting water baffle (53) engages with a driving gear (64).

5. The shallow groundwater pollution treatment device according to claim 4, characterized in that: The lifting assembly (5) further comprises a servo motor (51) mounted on the ground, an output gear of the servo motor (51) being engaged with a threaded rod (52), and an outer wall of the threaded rod (52) being threadedly connected to an inner wall of the lifting water retaining plate (53).

6. The shallow groundwater pollution treatment device according to claim 2, characterized in that: Two symmetrically arranged second guide frames (21) are fixedly connected to the inner wall of the slag discharge well (2), and a filtering reflux plate (23) is fixedly connected to the bottom of the slag discharge well (2).

7. The shallow groundwater pollution treatment device according to claim 6, characterized in that: The replacement assembly (3) comprises a winch (31) fixedly mounted on the ground, an output end of the winch (31) is fixedly connected to a hook (32), a lifting frame (33) is fixedly mounted below the hook (32), an activated carbon adsorption block (34) is mounted on the inner wall of the lifting frame (33), and the activated carbon adsorption block (34) is arranged between the slag discharge trough (22) and the filter return plate (23).

8. The shallow groundwater pollution treatment device according to claim 7, characterized in that: The air intake and exhaust assembly (4) comprises a blower (41) and a suction fan (44) fixedly mounted on the ground, wherein the outer wall of the blower (41) is fixedly connected to a blast duct (42), and the end of the blast duct (42) is fixedly connected to a porous exhaust frame (43) by passing through one of the first guide frames (11), and the outer wall of the suction fan (44) is fixedly connected to a suction duct (45), and the two ends of the suction duct (45) are respectively connected to the other first guide frame (11) and one of the second guide frames (21), and a plurality of suction holes (46) are provided on the inner walls corresponding to the first guide frame (11) and the second guide frame (21).

9. A method for treating shallow groundwater pollution using a device for treating shallow groundwater pollution, comprising: The following steps are involved: Step 1: Groundwater is stored in the sediment filter cartridge (13); Step 2: The buoyancy barrel (61) triggers the device to operate as the water level rises; Step 3: The air intake and exhaust assembly (4) operates to exhaust and inhale air; Step 4: The servo motor (51) operates to drive the lifting water baffle (53) to move up and down; Step 5: The driving rack (54) on the lifting water baffle (53) drives the transverse column (621) to move transversely; Step 6: The transverse column (621) drives the scraper assembly (63) to scrape the slag into the slag discharge trough (22); Step 7: Repeat steps 4 to 6 until the water level drops; Step 8: Turn off the device, reset the lifting water baffle (53) to store water, and repeat steps 1 to 7; Step 9: Regularly operate the replacement component (3) and manually replace the activated carbon adsorption block (34).

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