A device and method for treating shallow groundwater pollution

Abstract

The application 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, a treatment well arranged in the ground, a residue discharge well arranged on one side of the treatment well, a lifting assembly arranged above the treatment well, a replacement assembly arranged above the residue discharge well, and an air inlet and discharge assembly arranged above the treatment well and the residue discharge well. The scraping plate assembly is arranged, the driven gears are driven to rotate by the transverse moving assembly, the two driven shafts are reversely rotated due to the meshing of the two driven gears, the two external scraping plates are driven to scrape the floating residues into the residue discharge groove, the external scraping plates rotate while fitting the whole water surface, the internal scraping plates slide in the external scraping plates through the extension springs, the water baffle is repeatedly moved up and down, the floating residues are scraped for multiple times, the floating residues are cleaned in time, and the importance of water resource protection in the environmental protection concept is embodied.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water pollution treatment, in particular to a treatment device and method for shallow groundwater pollution. BACKGROUND

[0002] With the improvement of environmental awareness and the aggravation of pollution, the treatment of shallow groundwater pollution is becoming more and more critical. Its pollution has the characteristics of concealment, and needs to be combined with physical, chemical and biological methods. Early on, ex-situ remediation by extraction treatment was used, which was low in efficiency and high in cost. In recent years, new technologies such as in-situ chemical oxidation and bioremediation have emerged, which can treat pollutants in-situ, are environmentally friendly, low in cost, good in effect, reduce secondary pollution and improve 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 is also integrated, which promotes the popularization of environmental protection technology and helps the treatment of shallow groundwater pollution.

[0003] In the patent with the patent number CN118359249A, a treatment device for shallow groundwater pollution is disclosed, which includes a wall, a plurality of partition plates are fixedly installed on the two side walls of the wall, and a water inlet groove is formed between the adjacent two partition plates on the side wall of the wall. A trigger assembly and a plugging assembly are installed inside each water inlet groove. A plurality of treatment boxes are fixedly installed on the top of the wall, and the number of the treatment boxes is the same as that of the water inlet grooves. An installation area and a liquid storage area are provided inside each treatment box. A plurality of installation cavities are formed in the wall. The present application can avoid the cross contamination of pollutants in different layers of shallow groundwater, ensure the sufficiency of shallow groundwater treatment, and facilitate the replacement of the reaction wall. At the same time, the outflow of the treatment agent can be automatically controlled 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:

[0005] The floating sludge after pollution treatment cannot be cleaned in time: during the treatment of shallow groundwater pollution, floating sludge will be produced. If it is not cleaned in time, it will cause the treatment system to be blocked, reduce the treatment efficiency and water purification effect, and the accumulated floating sludge will be re-dissolved into the water, causing secondary pollution and affecting the treatment results. In addition, the uncleaned floating sludge will occupy the treatment space and affect the treatment capacity of subsequent pollutants, resulting in substandard effluent water quality. At the same time, the floating sludge may contain harmful substances, which will increase the ecological risk if exposed to the environment for a long time, threatening the surrounding environment and biological health. Therefore, a device for cleaning the floating sludge in time is needed to prevent the equipment from being blocked, keep the water flow unobstructed, improve the treatment efficiency, and help maintain the long-term stable operation of the treatment device, thereby achieving the effects of prolonging the service life of the equipment and reducing the environmental risk.

[0006] The device cannot be automatically adjusted: the groundwater flow is unstable, and the device cannot be operated regularly for treatment. Long-term operation of the device will result in low operating efficiency and energy waste. If the operator needs to intervene frequently, the workload will be increased. Therefore, a device that can store water to a certain amount to trigger the device is needed to improve the operating efficiency of the device, ensure its operation in the best state, improve the overall production or processing performance, reduce manual intervention, reduce the burden on the operator, and achieve the effects of improving the stability and reliability of the device and reducing energy consumption. SUMMARY

[0007] In view of the problems of the prior art, such as the inability to clean the dregs after pollution treatment in time and the inability to automatically adjust the operation of the device, a treatment device for shallow groundwater pollution and a treatment method are provided.

[0008] In one aspect of the present application, a treatment device for shallow groundwater pollution is provided. The purpose is to timely clean the dregs by setting the dregs removal mechanism and replacement assembly, which helps to maintain the long-term stable operation of the treatment device, achieves the effects of prolonging the service life of the device and reducing the environmental risk, sets the lifting assembly and air inlet and exhaust assembly when the water storage reaches a certain amount to trigger the device, improves the operating efficiency of the device, ensures its operation in the best state, reduces manual intervention, reduces the burden on the operator, and achieves the effects of improving the stability and reliability of the device and reducing energy consumption.

[0009] The technical scheme of the present application is: a treatment device for shallow groundwater pollution, comprising a ground, a treatment well arranged inside the ground, a residue discharge well arranged on one side of the treatment well, a lifting assembly arranged above the treatment well, a replacement assembly arranged above the residue discharge well, an air inlet and exhaust assembly arranged above the treatment well and the residue discharge well, and a dregs removal mechanism arranged inside the treatment well, wherein the inner wall of the treatment well is fixedly installed with a limiting plate and two symmetrically arranged first guide frames, the bottom of the treatment well is fixedly installed with a sand filter cylinder, a residue discharge groove is formed between the treatment well, the residue discharge well and the limiting plate, the dregs removal mechanism comprises a buoyancy barrel slidingly connected to the inner wall of the limiting plate, the inner part of the buoyancy barrel is provided with a horizontal moving assembly and a scraper assembly.

[0010] The scraper assembly comprises two driven shafts rotatably connected to the inner wall of the buoyancy barrel, the top of each driven shaft is fixedly connected with a driven gear, the two driven gears are in meshing state, the outer wall of each driven shaft is fixedly connected with an external scraper, the two external scrapers are arranged at the bottom of the buoyancy barrel, the inner wall of the external scraper is slidingly connected with an internal scraper, and the outer wall of the internal scraper and the inner wall of the external scraper are fixedly connected with an extension spring.

[0011] Adopting the above scheme, the scraper assembly is driven to rotate by the horizontal movement assembly through the driven gear, and the two driven shafts rotate reversely due to the meshing of the two driven gears, driving the two external scrapers to scrape the dregs into the dreg discharge groove, while the external scrapers rotate to fit the whole water surface, the internal scraper slides in the external scraper through the extension spring, repeatedly moves up and down to lift the water baffle, and the dregs are scraped for multiple times, so that the floating dregs are cleaned in time, the long-term stable operation of the treatment device is helped, and the service life of the equipment is prolonged and the environmental risk is reduced.

[0012] Further, the horizontal movement assembly comprises a horizontal movement column slidingly connected to the inner wall of the buoyancy barrel, and a first horizontal movement rack is fixedly connected to one end of the horizontal movement column close to the driven shaft, and the first horizontal movement rack is meshed with one of the driven gears.

[0013] Further, the inner wall of the buoyancy barrel is rotatably connected with a driving gear, and the driving gear is meshed with the second horizontal movement rack.

[0014] Adopting the above scheme, when the lifting assembly is triggered to operate, the driving gear rotates and drives the horizontal movement column to move horizontally through the second horizontal movement rack, so that the scraper assembly is driven to scrape the dregs by the first horizontal movement rack, and the functions of power transmission and repeated movement are achieved.

[0015] Further, the lifting assembly comprises a lifting water baffle slidingly connected between the two first guide frames, and a driving rack is fixedly connected to the inner wall of the lifting water baffle.

[0016] Further, the lifting assembly further comprises a servo motor installed on the ground, and an output gear of the servo motor is meshed with a threaded rod, and the outer wall of the threaded rod is threadedly connected with the inner wall of the lifting water baffle.

[0017] Adopting the above scheme, after the equipment is triggered to operate for a period of time, the servo motor operates, the output gear of the servo motor drives the lifting water baffle to move up through the threaded rod, and when the driving rack on the lifting water baffle contacts the driving gear, the scraper assembly is driven to scrape the dregs by the horizontal movement assembly, and the function of providing power is achieved.

[0018] Further, the inner wall of the dreg discharge well is fixedly connected with two symmetrically arranged second guide frames, and the bottom of the dreg discharge well is fixedly connected with a filter backflow plate.

[0019] Further, the replacement assembly comprises a winch fixedly installed on the ground, a hook fixedly connected to an output end of the winch, and a lifting frame fixedly installed below the hook, wherein an active carbon adsorption block is installed on an inner wall of the lifting frame and is arranged between the residue discharging groove and the filtering backflow plate.

[0020] Further, the air intake and discharge assembly comprises a blower and a suction fan fixedly installed on the ground, wherein an air blowing pipeline is fixedly connected to an outer wall of the blower, a porous air discharge frame is fixedly connected to a terminal end of the air blowing pipeline through one of the first guide frames, an air suction pipeline is fixedly connected to an outer wall of the suction fan, and two terminal ends of the air suction pipeline are respectively communicated with the other first guide frame and one of the second guide frames, and a plurality of air suction holes are formed in inner walls of the first guide frames and the second guide frames.

[0021] By the replacement assembly and the air intake and discharge assembly, when the buoyancy barrel reaches the specified position of the limiting plate with the water level rising, the device is triggered to operate, the blower and the suction fan are simultaneously operated, the compressed air output by the blower reaches the porous air discharge frame through the air blowing pipeline, a large amount of tiny air bubbles are discharged from the porous air discharge frame, sewage treatment is performed through the air floatation decontamination principle, dregs are formed on the surface water layer, waste gas is formed on the upper layer of the treatment well, the waste gas is discharged into the suction fan through the air suction holes of the suction pipeline for collection and treatment, the dregs are cleaned by the dregs removing mechanism, the dregs fall into the residue discharging well through the residue discharging groove and are adsorbed by the active carbon adsorption block, the excess water flows back to the underground water flow path through the filtering backflow plate, the waste gas flowing with the dregs is discharged through the air suction holes of the second guide frame, when the active carbon adsorption block needs to be replaced, the winch is manually operated, the lifting frame is pulled out of the well through the hook, the active carbon adsorption block is replaced, and then the lifting frame is put back into the residue discharging well, thereby achieving the air floatation decontamination effect.

[0022] In another aspect of the present application, a treatment method of a treatment device for shallow groundwater pollution is provided, which comprises the following steps:

[0023] Step one: the groundwater is stored in the sand filter cylinder;

[0024] Step two: the buoyancy barrel triggers the device to operate as the water level rises;

[0025] Step three: the air intake and discharge assembly operates to discharge and suck air;

[0026] Step four: the servo motor operates to drive the lifting water stop plate to move up and down;

[0027] Step five: the driving rack on the lifting water stop plate drives the transverse column to move transversely;

[0028] Step six: the transverse column drives the scraper assembly to scrape the dregs into the residue discharging groove;

[0029] Step seven: repeat steps four to six until the water level moves down;

[0030] Step eight: close the device, reset the lifting dam to store water, and repeat steps one to seven;

[0031] Step nine: replace the component in a timely manner, and manually replace the activated carbon adsorption block.

[0032] By using the above scheme, the lifting dam is blocked to store water, and when the buoyancy bucket reaches the specified position of the limit plate as the water level rises, the device is triggered to run, the air inlet and outlet assembly is used for air inlet and outlet treatment, the air blower is used for blowing air, and the servo motor is operated after a period of time, the output gear of the servo motor drives the lifting dam to move up through the threaded rod, when the driving rack on the lifting dam contacts the driving gear, the horizontal moving column is driven to move horizontally through the second horizontal moving rack, thereby driving one of the driven gears to rotate through the first horizontal moving rack, since the two driven gears are engaged, the two driven shafts are reversely rotated, and the two external scrapers are used to scrape the scum into the scum discharge groove, the internal scraper slides in the external scraper through the extension spring while the external scraper rotates to fit the entire water surface, the lifting dam is repeatedly moved up and down, and the scum is scraped multiple times, the scum falls into the scum discharge well through the scum discharge groove and is adsorbed by the activated carbon adsorption block, and the excess water flows back to the underground water flow path through the filter backflow plate, while the waste gas flowing through the scum is discharged through the air suction hole on the second guide frame, after multiple times of scraping the scum, the lifting dam continues to move up, at this time, the water inflow is greater than the water outflow, and the water level moves down, when the buoyancy bucket reaches the specified position of the limit plate as the water level drops, the device is triggered to stop running, and the process is repeated.

[0033] The beneficial effects of the present application are as follows:

[0034] 1. The scraper assembly is driven to rotate by the horizontal moving assembly, since the two driven gears are engaged, the two driven shafts are reversely rotated, and the two external scrapers are used to scrape the scum into the scum discharge groove, the internal scraper slides in the external scraper through the extension spring while the external scraper rotates to fit the entire water surface, the lifting dam is repeatedly moved up and down, and the scum is scraped multiple times, thereby achieving the effect of timely cleaning of the scum, helping to maintain the long-term stable operation of the treatment device, and achieving the effects of prolonging the service life of the device and reducing environmental risks.

[0035] 2. Through the set lifting and exhaust components, the equipment is triggered when the water reaches a certain level. The blower and suction fan run simultaneously. The blower outputs compressed air through the blower pipe to the multi-hole exhaust frame, from which a large number of tiny bubbles are discharged. Through the principle of air flotation, sewage is treated, and scum is formed on the surface water layer. Exhaust gas is formed in the upper layer of the treatment well. The exhaust gas is discharged into the suction fan through the suction pipe via the suction hole for collection and treatment. After the blower blows for a period of time, the servo motor runs. The output gear of the servo motor drives the lifting baffle plate to move up through the threaded rod, improving the operating efficiency of the equipment and ensuring that it works in the best condition. At the same time, it reduces manual intervention, reduces the burden on operators, and achieves the effects of improving equipment stability and reliability and reducing energy consumption.

[0036] 3. Through the replacement components, the scum falls into the scum discharge well through the scum discharge trough and is adsorbed by the activated carbon adsorption blocks. Excess water flows back to the groundwater flow path through the filter return plate, while the exhaust gas flowing with the scum is discharged through the air suction holes on the second guide frame. When the activated carbon adsorption blocks need to be replaced, the winch is manually operated to pull the lifting frame out of the well through the hook. After the activated carbon adsorption blocks are replaced, they are put back into the scum discharge well, which plays a role in maintaining the stable operation of the system. Attached Figure Description

[0037] Figure 1 This is a front view of the main structure of the present invention;

[0038] Figure 2 This is a schematic diagram of the main structure of the present invention;

[0039] Figure 3 This is a top view of the structure at the treatment well of the present invention;

[0040] Figure 4 This is a schematic diagram of the slag discharge trough structure of the present invention;

[0041] Figure 5 This is a schematic diagram of the scum removal mechanism of the present invention;

[0042] Figure 6 This is a schematic diagram of a portion of the buoyancy bucket structure of the present invention;

[0043] Figure 7 For the present invention Figure 6 Enlarged structural diagram of point A in the middle;

[0044] Figure 8 This is a schematic cross-sectional view of the scraper assembly of the present invention;

[0045] Figure 9 This is a schematic diagram of the scraper assembly in different states according to the present invention;

[0046] Figure 10Part structure schematic diagram of the replacement assembly of the application;

[0047] Figure 11 Part structure schematic diagram of the air intake and exhaust assembly of the application.

[0048] In the figure:

[0049] 1, treatment well; 11, first guide frame; 12, limiting plate; 13, silt filter cylinder; 2, silt discharge well; 21, second guide frame; 22, silt discharge groove; 23, filter backflow plate; 3, replacement assembly; 31, winch; 32, hook; 33, lifting frame; 34, activated carbon adsorption block; 4, air intake and exhaust assembly; 41, air blower; 42, air blowing pipeline; 43, porous exhaust frame; 44, air suction fan; 45, air suction pipeline; 46, air suction hole; 5, lifting assembly; 51, servo motor; 52, threaded rod; 53, lifting water stop plate; 54, driving rack; 6, scum removal mechanism; 61, buoyancy bucket; 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, extension spring; 635, internal scraper; 64, driving gear. DETAILED DESCRIPTION

[0050] In order to make the above-mentioned purposes, features and advantages of the application more obvious and easy to understand, the specific embodiments of the application will be described in detail below with reference to the accompanying drawings.

[0051] Embodiment 1, refer to Figure 1 - Figure 11 , provides a treatment device for shallow groundwater pollution, which comprises a ground, a treatment well 1 arranged in the ground, a silt 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 silt discharge well 2, an air intake and exhaust assembly 4 arranged above the treatment well 1 and the silt discharge well 2, and a scum removal mechanism 6 arranged in the treatment well 1, the inner wall of the treatment well 1 is fixedly installed with a limiting plate 12 and two symmetrically arranged first guide frames 11, the bottom of the treatment well 1 is fixedly installed with a silt filter cylinder 13, a silt discharge groove 22 is arranged between the treatment well 1, the silt discharge well 2 and the limiting plate 12, the scum removal mechanism 6 comprises a buoyancy bucket 61 which is slidingly connected to the inner wall of the limiting plate 12, and the buoyancy bucket 61 is internally provided with a transverse movement assembly 62 and a scraper assembly 63.

[0052] Refer to Figure 8The scraper assembly 63 comprises two driven shafts 632 rotatably connected to the inner wall of the buoyancy barrel 61, the top of each of the two driven shafts 632 is fixedly connected with a driven gear 631, the two driven gears 631 are in meshing state, the outer wall of each of the two driven shafts 632 is fixedly connected with an external scraper 633, the two external scrapers 633 are arranged at the bottom of the buoyancy barrel 61, the inner wall of each of the two external scrapers 633 is slidably connected with an internal scraper 635, and the outer wall of the internal scraper 635 is fixedly connected with the inner wall of the external scraper 633.

[0053] Specifically, the shallow groundwater is between the ground and the upper aquiclude, the flow direction is from top to bottom, the treatment well 1 is arranged at the water accumulation position between the upstream and the downstream, the deslag well 2 is arranged at the upstream of the treatment well 1, and the equipment is installed on the ground, the upper layer of the treatment well 1 is a sealing layer, and the lower layer is a silt filter cylinder 13, the deslag groove 22 is arranged between the treatment well 1 and the deslag well 2, the two driven shafts 632 are symmetrically arranged in the buoyancy barrel 61, the two driven gears 631 are in meshing state, and the two external scrapers 633 are reversely rotated, the rotating path of the two external scrapers 633 forms a circle, and the floating sludge on the surface of the water can be scraped.

[0054] The scraper assembly 63 is driven by the horizontal moving assembly 62 to rotate the driven gear 631, the two driven gears 631 are in meshing state, the two driven shafts 632 are reversely rotated, the two external scrapers 633 are driven to scrape the floating sludge into the deslag groove 22, the internal scraper 635 slides in the external scraper 633 through the expansion spring 634, the movable water baffle 53 is repeatedly moved up and down, the floating sludge is scraped for multiple times, the floating sludge is cleaned in time, the long-term stable operation of the treatment device is facilitated, the service life of the equipment is prolonged, and the environmental risk is reduced.

[0055] With reference to Figure 7 Figure 9 The horizontal moving assembly 62 comprises a horizontal moving column 621 slidably connected to the inner wall of the buoyancy barrel 61, one end of the horizontal moving column 621 close to the driven shaft 632 is fixedly connected with a first horizontal moving rack 622, the first horizontal moving rack 622 is in meshing state with one of the driven gears 631, the other end of the horizontal moving column 621 away from the driven shaft 632 is fixedly connected with a second horizontal moving rack 623, and the inner wall of the buoyancy barrel 61 is rotatably connected with a driving gear 64.

[0056] The horizontal moving assembly 62 and the driving gear 64 are arranged, the driving gear 64 is rotated to drive the horizontal moving column 621 to move horizontally through the second horizontal moving rack 623 when the lifting assembly 5 is triggered to operate, the scraper assembly 63 is driven to scrape the floating sludge through the first horizontal moving rack 622, and the driving gear 64 plays a role in power transmission and repeated motion. ​

[0057] Reference Figure 6 - Figure 7 The lifting assembly 5 includes a lifting baffle 53 slidably connected between two first guide frames 11. A drive rack 54 is fixedly connected to the inner wall of the lifting baffle 53. When the lifting baffle 53 moves, the drive rack 54 on the lifting baffle 53 meshes with a drive gear 64. The lifting assembly 5 also includes a servo motor 51 installed on the ground. The output gear of the servo motor 51 meshes with a threaded rod 52. The outer wall of the threaded rod 52 is threadedly connected to the inner wall of the lifting baffle 53.

[0058] Specifically, the drive rack 54 on the lifting baffle 53 can support the driven shaft 632 to rotate half a turn. By moving the drive rack 54 up and down, it can drive the two external scrapers 633 to scrape back and forth. The up and down movement of the lifting baffle 53 can be set to reduce manual intervention.

[0059] After the device is triggered to run for a period of time, the servo motor 51 runs. The output gear of the servo motor 51 drives the lifting baffle plate 53 to move upward via the threaded rod 52. When the drive rack 54 on the lifting baffle plate 53 contacts the drive gear 64, the transverse component 62 drives the scraper component 63 to perform the foam scraping operation, which provides power.

[0060] Reference Figure 10 - Figure 11 The inner wall of the slag discharge well 2 is fixedly connected with two symmetrically arranged second guide frames 21. The bottom of the slag discharge well 2 is fixedly connected with a filter return plate 23. The replacement component 3 includes a winch 31 fixedly installed on the ground. The output end of the winch 31 is fixedly connected with a hook 32. A lifting frame 33 is fixedly installed below the hook 32. An activated carbon adsorption block 34 is installed on the inner wall of the lifting frame 33. The activated carbon adsorption block 34 is located 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 installed on the ground. The outer wall of the blower 41 is fixedly connected with a blower pipe 42. The end of the blower pipe 42 is fixedly connected to a perforated exhaust frame 43 through one of the first guide frames 11. The outer wall of the suction fan 44 is fixedly connected with a suction pipe 45. The two ends of the suction pipe 45 are respectively connected to another first guide frame 11 and one of the second guide frames 21. Multiple suction holes 46 are opened on the inner walls of the first guide frame 11 and the second guide frame 21.

[0061] By setting the replacement assembly 3 and air intake and exhaust assembly 4, the buoyancy bucket 61 with the water level rises to the specified position limit plate 12 trigger device operation, blower 41 and blower 44 run simultaneously, blower 41 output compressed air through the air duct 42 to the porous exhaust frame 43, by the porous exhaust frame 43 to discharge a large number of tiny bubbles, by air float sewage treatment principle to carry out sewage treatment, and in the surface water layer to form dregs, on the upper layer of the treatment well 1 to form waste gas, waste gas through the air suction hole 46 by the air suction duct 45 into the blower 44 to collect and process, and then by the dregs removal mechanism 6 to clean up, dregs through the discharge chute 22 into the discharge well 2 by activated carbon adsorption block 34 to adsorb, the excess water from the filter backflow plate 23 back to the groundwater flow path, and the waste gas with the dregs flow through the air suction hole 46 on the second guide frame 21 discharge, when the activated carbon adsorption block 34 needs to be replaced, manually run the winch 31, through the hook 32 to pull out the lifting frame 33 outside the well, replace the activated carbon adsorption block 34 and then put back into the discharge well 2, play the role of air float sewage treatment.

[0062] In use, the initial state, the lifting water baffle 53 is at the bottom of the treatment well 1, the groundwater is blocked by the lifting water baffle 53 to store water after preliminary filtration by the sand filter cylinder 13, the buoyancy bucket 61 with the water level rises to the specified position limit plate 12 trigger device operation, by the air intake and exhaust assembly 4 to carry out air intake and exhaust treatment, the blower 41 blows air after a period of time, the servo motor 51 runs, the output gear of the servo motor 51 drives the lifting water baffle 53 to move up through the threaded rod 52, when the driving rack 54 on the lifting water baffle 53 contacts the driving gear 64, the second horizontal moving rack 623 drives the horizontal moving column 621 to move horizontally, thereby driving one of the driven gears 631 to rotate through the first horizontal moving rack 622, since the two driven gears 631 are engaged, the two driven shafts 632 rotate in the opposite direction, driving the two external scrapers 633 to scrape the dregs into the discharge chute 22, the external scraper 633 rotates at the same time to fit the entire water surface, the internal scraper 635 slides in the external scraper 633 through the extension spring 634, repeatedly moving the lifting water baffle 53 up and down, scraping the foam several times, the dregs fall into the discharge well 2 through the discharge chute 22 and are adsorbed by the activated carbon adsorption block 34, the excess water flows back to the groundwater flow path from the filter backflow plate 23, and the waste gas with the dregs flow through the air suction hole 46 on the second guide frame 21 discharge, after scraping the foam several times, the lifting water baffle 53 continues to move up, at this time the water output is greater than the water input, the water level moves down, when the buoyancy bucket 61 with the water level drops to the specified position limit plate 12 trigger device stop running, in turn repeatedly.

[0063] Embodiment 2, refer to Figure 1 - Figure 11 , provides a treatment method of a shallow groundwater pollution treatment device, which adopts a shallow groundwater pollution treatment device, comprising the following steps:

[0064] Step one: groundwater is stored in the sand filter cylinder 13;

[0065] Step two: the buoyancy bucket 61 rises with the water level to trigger the device to run;

[0066] Step three: the air intake and exhaust assembly 4 runs to exhaust and inhale air;

[0067] Step four: the servo motor 51 runs to drive the lifting water baffle 53 up and down;

[0068] Step five: the driving rack 54 on the lifting water baffle 53 drives the horizontal moving column 621 to move horizontally;

[0069] Step six: the horizontal moving column 621 drives the scraper assembly 63 to scrape the scum into the scum discharge groove 22;

[0070] Step seven: repeat steps four to six until the water level moves down;

[0071] Step eight: turn off the device, reset the lifting water baffle 53 for water storage, and repeat steps one to seven;

[0072] Step nine: replace the component 3 at a fixed time, and manually replace the activated carbon adsorption block 34.

[0073] The working principle of the present application is:

[0074] Initial state, the lifting water baffle 53 is at the bottom of the treatment well 1, the groundwater is preliminarily filtered by the sand filter cylinder 13 and is blocked by the lifting water baffle 53 for water storage, and the buoyancy bucket 61 reaches the specified position of the limiting plate 12 when the water level rises to trigger the device to run.

[0075] The air blower 41 and the air suction fan 44 run simultaneously, the air blower 41 outputs compressed air to the porous exhaust frame 43 through the air blowing pipe 42, a large number of small bubbles are discharged from the porous exhaust frame 43, sewage treatment is carried out through the air float dirt removal principle, and scum is formed on the surface water layer, waste gas is formed on the upper layer of the treatment well 1, and the waste gas is discharged into the air suction fan 44 through the air suction hole 46 and the air suction pipe 45 for collection and treatment.

[0076] After a period of time after the blower 41 blows air, the servo motor 51 operates, and the output gear of the servo motor 51 drives the lifting baffle 53 to move up through the threaded rod 52. When the driving rack 54 on the lifting baffle 53 contacts the driving gear 64, the horizontal moving column 621 is driven to move horizontally through the second horizontal moving rack 623, so that one of the driven gears 631 is driven to rotate by the first horizontal moving rack 622, and since the two driven gears 631 are engaged, the two driven shafts 632 are reversely rotated, driving the two external scrapers 633 to scrape the scum into the scum discharge groove 22. The external scraper 633 rotates at the same time to fit the entire water surface, and the internal scraper 635 slides in the external scraper 633 through the extension spring 634, repeatedly moving the lifting baffle 53 up and down, and scraping the scum multiple times.

[0077] After the scum falls into the scum discharge well 2 through the scum discharge groove 22, it is adsorbed by the activated carbon adsorption block 34, and the excess water flows back to the underground water flow path from the filter backflow plate 23, and the waste gas flowing with the scum is discharged from the air suction hole 46 on the second guide frame 21.

[0078] After multiple times of scraping the scum, the lifting baffle 53 continues to move up, at this time the water inflow is greater than the water outflow, and the water level moves down, and when the buoyancy bucket 61 reaches the specified position of the limiting plate 12 with the water level, the device stops operating, and the process is repeated in turn.

[0079] When it is necessary to replace the activated carbon adsorption block 34, the winch 31 is manually operated, the lifting frame 33 is pulled out of the well through the hook 32, and after the activated carbon adsorption block 34 is replaced, it is put back into the scum discharge well 2.

[0080] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. A device for treating shallow groundwater pollution, comprising a ground, a treatment well (1) arranged inside the ground, a residue 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 residue discharge well (2), an air intake and discharge assembly (4) arranged above the treatment well (1) and the residue discharge well (2), and a floating residue removal mechanism (6) arranged inside the treatment well (1), characterized in that: The inner wall of the management well (1) is fixedly installed with a limiting plate (12) and two symmetrically arranged first guide frames (11), the bottom of the management well (1) is fixedly installed with a silt filtering cylinder (13), a silt discharging groove (22) is arranged between the management well (1), the silt discharging well (2) and the limiting plate (12), and the floating scum removing mechanism (6) comprises a buoyancy barrel (61) which is slidingly connected to the inner wall of the limiting plate (12). ​ The scraper assembly (63) comprises two driven shafts (632) which are rotationally connected to the inner wall of the buoyancy barrel (61), the top of each of the two driven shafts (632) is fixedly connected with a driven gear (631), the two driven gears (631) are in meshing state, the outer wall of each of the two driven shafts (632) is fixedly connected with an external scraper (633), the two external scrapers (633) are arranged at the bottom of the buoyancy barrel (61), the inner wall of the external scraper (633) is slidingly connected with an internal scraper (635), and the outer wall of the internal scraper (635) and the inner wall of the external scraper (633) are fixedly connected with an extension spring (634). The horizontal moving assembly (62) comprises a horizontal moving column (621) which is slidingly connected to the inner wall of the buoyancy barrel (61), the first horizontal moving rack (622) is fixedly connected to one end of the horizontal moving column (621) which is close to the driven shaft (632), the first horizontal moving rack (622) is in meshing state with one of the driven gears (631), and the second horizontal moving rack (623) is fixedly connected to the other end of the horizontal moving column (621) which is away from the driven shaft (632). The inner wall of the buoyancy barrel (61) is rotationally connected with a driving gear (64), and the driving gear (64) is in meshing state with the second horizontal moving rack (623). The lifting assembly (5) comprises a lifting water baffle (53) which is slidingly connected between the two first guide frames (11), the inner wall of the lifting water baffle (53) is fixedly connected with a driving rack (54), and when the lifting water baffle (53) moves, the driving rack (54) on the lifting water baffle (53) is in meshing state with the driving gear (64). The lifting assembly (5) further comprises a servo motor (51) which is installed on the ground, the output gear of the servo motor (51) is in meshing state with a threaded rod (52), and the outer wall of the threaded rod (52) is in threaded connection with the inner wall of the lifting water baffle (53). The inner wall of the silt discharging well (2) is fixedly connected with two symmetrically arranged second guide frames (21), and the bottom of the silt discharging well (2) is fixedly connected with a filtering backflow plate (23). The replacement assembly (3) comprises a winch (31) which is fixedly installed on the ground, the output end of the winch (31) is fixedly connected with a hook (32), the lower portion of the hook (32) is fixedly installed with a lifting frame (33), the inner wall of the lifting frame (33) is installed with an activated carbon adsorption block (34), and the activated carbon adsorption block (34) is arranged between the silt discharging groove (22) and the filtering backflow plate (23). The buoyancy barrel (61) triggers the device to run as the water level rises.

2. The apparatus for treating pollution of shallow ground water according to claim 1, characterized by: The air intake and exhaust assembly (4) comprises a blower (41) and an air suction fan (44) fixedly installed on the ground, an outer wall of the blower (41) is fixedly connected with a blower duct (42), an end of the blower duct (42) is fixedly connected with a porous exhaust rack (43) penetrating through one of the first guide frames (11), an outer wall of the air suction fan (44) is fixedly connected with an air suction duct (45), two ends of the air suction duct (45) are respectively communicated with the other first guide frame (11) and one of the second guide frames (21), and a plurality of air suction holes (46) are formed in inner walls of the first guide frame (11) and the second guide frame (21).

3. A treatment method of a treatment apparatus for shallow groundwater pollution, using the treatment apparatus for shallow groundwater pollution according to any one of claims 1 to 2, characterized by: comprising the steps of: Step one: the underground water is stored in the sand filter cylinder (13); Step two: the buoyancy barrel (61) triggers the device to run as the water level rises; Step three: the air intake and exhaust assembly (4) runs to exhaust and inhale air; Step four: the servo motor (51) runs to drive the lifting water baffle (53) to move up and down; Step five: the driving rack (54) on the lifting water baffle (53) drives the transverse column (621) to move transversely; Step six: the transverse column (621) drives the scraper assembly (63) to scrape the scum into the scum discharge groove (22); Step seven: steps four to six are repeated until the water level moves down; Step eight: the device is closed, the lifting water baffle (53) is reset for water storage, and steps one to seven are repeated; Step nine: the timing operation replacement assembly (3) is manually replaced with the activated carbon adsorption block (34).

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