A groundwater circulation well rehabilitation system

Abstract

The application belongs to the technical field of groundwater pollution treatment, and particularly discloses a groundwater circulation well repair system. The groundwater circulation well repair system is characterized in that the ultrasonic mechanism is arranged in the well body of the circulation well, and the ultrasonic vibrator in the ultrasonic mechanism is connected with the wave vibration plate. The wave vibration plate emits ultrasonic energy towards the side of the filter screen, so that a large number of micro-gas nucleus cavitation bubbles are formed in the groundwater during the vibration of the wave vibration plate. When the sound pressure reaches the expected value, the micro-jet and shock wave generated by the vibration and repeated closing and explosion of the micro-gas nucleus cavitation bubbles can destroy the insoluble stains and make them disperse in the water. When the pollutants and fine sand and other small particle blockages adhere to the surface of the filter screen in the water flow, they can be quickly emulsified and fall off. In addition, the microorganism aggregates on the screen can be broken and peeled off, so that the pollutant repair efficiency of the groundwater circulation well system is significantly improved, and the anti-blocking ability and service life of the well body screen section are effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of groundwater pollution remediation, in particular to a groundwater circulation well remediation system. BACKGROUND

[0002] With the rapid development of various industrial enterprises, the abnormal leakage of various products during storage, transportation and use has caused serious soil and groundwater pollution. Soil and groundwater pollution remediation and management is imperative. Groundwater circulation remediation technology has the characteristics of minimizing pollutant exposure and less disturbance to the underground environment. This technology has high removal efficiency, short remediation period and easy control of secondary pollution, and has broad application prospects. At present, it has become the development trend and research hotspot of collaborative remediation technology for soil and groundwater pollution in service plots and plots close to sensitive targets.

[0003] Groundwater circulation well remediation technology is an in-situ remediation technology that drives contaminated groundwater into a circulation well through the formation of a three-dimensional vertical water flow, and removes pollutants in the groundwater and soil saturated zone through coupling of aeration, extraction, filtration, and biological remediation. The technology is usually composed of a well body, a packer, a water level difference forming component, a filter layer, and an upper and lower two-part screen pipe. However, with the operation of the circulation well, the insoluble impurities attached by microorganisms or brought in by repeated water flow scouring are prone to cause plugging of the screen pipe and filter layer of the circulation well. The plugging of the well body leads to a decrease in water pumping and injection capacity, a decrease in water flow circulation and degradation efficiency, and a serious impact on the operation efficiency and service life of the circulation well. In the existing plugging prevention technology of circulation well body, screen pipe and filter layer, mechanical scraping, mechanical vibration, biological enzyme and chemical plugging remover are mainly used for plugging removal. Mechanical scraping mainly uses the friction force generated by the scraper or scraper plate on the mechanical device to remove the dirt accumulated on the surface of the well wall, screen pipe and filter layer. Although it is simple to operate, low in cost and free of secondary pollution, it is difficult to remove the film type dirt formed on the solid particles in the filter layer and screen pipe with small pore size. Mechanical vibration can only strip off large-sized and poorly adhered impurity particles, and cannot break down the chemical and biological action formed dirt. Biological enzyme plugging has strong specificity and is suitable for biological plugging scenarios, but its effect is poor for chemical plugging. Moreover, the biological reduction may promote inorganic salt dirt and aggravate the corrosion of metal tanks. Chemical plugging remover needs to be injected into the well or formation, which can effectively remove calcium, iron, manganese and other salt deposits and enhance the fluidity of viscous fluids. However, chemical plugging remover is an acidic substance that corrodes the well body, and the injection of chemical agents itself has the risk of secondary pollution to the underground ecological environment. SUMMARY

[0004] In view of the problems in the prior art, the groundwater circulation well repair system is provided to overcome the blockage of the groundwater circulation well body caused by scale stains formed by chemical and biological actions, thereby reducing the repair efficiency of pollutants.

[0005] To this end, the groundwater circulation well repair system comprises:

[0006] The circulation well body comprises an upper screen pipe section and a lower screen pipe section located below the ground, the upper screen pipe section is arranged above the lower screen pipe section along the height direction, the upper screen pipe section is provided with a first water outlet, and the lower screen pipe section is provided with a first water inlet;

[0007] The groundwater pumping and injecting mechanism is installed in the circulation well body, the second water inlet of the groundwater pumping and injecting mechanism is located inside the lower screen pipe section, and the second water outlet of the groundwater pumping and injecting mechanism is located inside the upper screen pipe section, the groundwater pumping and injecting mechanism is used to transport the groundwater in the lower screen pipe section to the inside of the upper screen pipe section to form a three-dimensional vertical water flow circulation at the circulation well body;

[0008] The filtering mechanism comprises a filtering screen, which is installed in the upper screen pipe section and used to filter the groundwater flowing into the upper screen pipe section;

[0009] The ultrasonic mechanism is located inside the circulation well body, the ultrasonic mechanism comprises an ultrasonic vibrator and a wave vibration plate, the ultrasonic vibrator is used to generate a high-frequency vibration signal to convert electrical energy into mechanical energy, the wave vibration plate is connected with the ultrasonic vibrator, and the wave vibration plate is used to transmit the high-frequency vibration generated by the ultrasonic vibrator towards one side of the filtering screen.

[0010] Optionally, the groundwater circulation well repair system,

[0011] The groundwater circulation well repair system further comprises a tank body, the tank body is provided with a first body located below the ground, and the first body is installed in the upper screen pipe section, the first body is provided with a first accommodating cavity inside, the first body is provided with a first through hole, and the first through hole is arranged through the bottom of the first body;

[0012] The wave vibration plate is installed inside the first accommodating cavity, and the lower wall surface of the wave vibration plate is arranged in a spaced manner with the inner wall surface below the first body, the wave vibration plate is provided with a second through hole, the second through hole is in communication with the first through hole through a first channel, so that the groundwater inside the tank body flows to the outside of the tank body in sequence through the second through hole, the first channel and the first through hole;

[0013] The wave vibration plate is matched with the first accommodating chamber, and the outer side wall of the wave vibration plate abuts against the inner wall surface of the first accommodating chamber; the lower wall surface of the wave vibration plate, the outer wall surface of the first channel, the inner wall surface of the first body side portion, and the upper wall surface of the first body bottom portion enclose to form a closed second accommodating chamber, and the ultrasonic vibrator is located inside the second accommodating chamber.

[0014] Optionally, the groundwater circulation well repair system,

[0015] The first through holes are provided in multiple groups, and the first through holes in any one group are arranged along a second direction.

[0016] The ultrasonic vibrators are provided in multiple groups, and the ultrasonic vibrators in any one group are located between two adjacent groups of the first through holes, and the ultrasonic vibrators in multiple groups are arranged along a first direction, and the ultrasonic vibrators in any one group are arranged along a second direction.

[0017] The first direction is perpendicular to the second direction.

[0018] Optionally, the groundwater circulation well repair system,

[0019] The first accommodating chamber has a cylindrical structure.

[0020] The ultrasonic vibrators in any one group are coaxially arranged with the first through holes in any one group.

[0021] The first direction is a radial direction of the end surface of the wave vibration plate, and the second direction is a circumferential direction of the end surface of the wave vibration plate.

[0022] Optionally, the groundwater circulation well repair system,

[0023] The groundwater pumping and injecting mechanism comprises a water pumping pump and a water pumping pipe, the water pumping pump is installed inside the lower screen pipe section, one end of the water pumping pipe arranged along an axis thereof is in communication with the water pumping pump, and the other end of the water pumping pipe arranged along the axis thereof extends through the first body bottom portion to the inside of the first accommodating chamber.

[0024] The groundwater pumping and injecting mechanism further comprises a water distribution assembly, the water distribution assembly comprises a water distribution pipeline, the water distribution pipeline is horizontally arranged, one end of the water distribution pipeline arranged along an axis thereof is connected to the other end of the water pumping pipe arranged along the axis thereof, the other end of the water distribution pipeline arranged along the axis thereof extends towards the inner wall surface of the first body side portion, and the water distribution pipeline is provided with a plurality of water injection holes, the water injection holes are arranged along the axis direction and / or the circumferential direction of the water distribution pipeline.

[0025] The filter screens are provided in plurality, and the plurality of filter screens are arranged in interval along the height direction and each of the filter screens is arranged below the water distribution pipeline along the height direction;

[0026] The second water inlet end is the inlet of the water pump, and the second water outlet end is the end of the water pumping pipe away from the water pump and located inside the tank.

[0027] Optionally, the groundwater circulation well repair system,

[0028] The groundwater circulation well repair system further comprises a central sleeve, which is sleeved on the outer wall of the water pumping pipe.

[0029] Each of the filter screens is provided with at least one first mounting groove and at least one second mounting groove, the first mounting groove is connected with the side of the filter screen, and the second mounting groove is located at the center of the filter screen; in any horizontal projection plane, the first mounting groove of any filter screen and the first mounting groove of the adjacent filter screen are arranged in offset in the circumferential direction of the water pumping pipe, and the second mounting groove of any filter screen and the second mounting groove of the adjacent filter screen are arranged in offset around the circumferential direction of the water pumping pipe.

[0030] The filter mechanism further comprises a plurality of connecting pieces, and each of the connecting pieces corresponds to the first mounting groove and the second mounting groove; each of the connecting pieces is provided with a first connecting end and a second connecting end, the first connecting end of the connecting piece corresponding to the first mounting groove is connected with the inner wall of the first body side, and the second connecting end is clamped with the filter screen; the first connecting end of the connecting piece corresponding to the second mounting groove is connected with the outer wall of the central sleeve, and the second connecting end is clamped with the filter screen.

[0031] Optionally, the groundwater circulation well repair system,

[0032] Each of the connecting pieces comprises a square block and a trapezoidal block, the first mounting groove or the second mounting groove is used for detachable connection with the square block, the trapezoidal block is connected with the square block, the trapezoidal block is located below the square block along the height direction, and the upper wall of the trapezoidal block abuts against the lower wall of the filter screen.

[0033] Optionally, the groundwater circulation well repair system,

[0034] In any horizontal projection plane, the geometric parameters of the lower wall of the trapezoidal block in the upper connecting piece and the geometric parameters of the upper wall of the square block in the lower connecting piece are the same; and / or

[0035] The geometric parameters of the square blocks in the multiple connecting pieces at the same height are the same; and / or

[0036] The geometric parameters of the trapezoidal blocks in the multiple connecting pieces at the same height are the same.

[0037] Optionally, the groundwater circulation well repair system further comprises a chemical oxidation mechanism,

[0038] The chemical oxidation mechanism comprises:

[0039] A liquid storage piece is installed above the ground;

[0040] A liquid supply pipeline comprises a first horizontal pipe, a first vertical pipe, a second horizontal pipe and a second vertical pipe which are sequentially communicated, the first horizontal pipe and the first vertical pipe are installed above the ground, the second horizontal pipe and the second vertical pipe are located inside the tank body, the first horizontal pipe is in communication with the first liquid outlet end of the liquid storage piece, the second vertical pipe extends to the inside of the pumping pipe at the end away from the second horizontal pipe, and the second vertical pipe is provided with a plurality of second liquid outlet ends which are spaced apart along the axial direction of the pumping pipe;

[0041] An adjusting valve is installed on the first horizontal pipe or the first vertical pipe;

[0042] A plurality of fan-shaped nozzles are provided and correspond to the second liquid outlet ends one by one, and the spraying direction of the fan-shaped nozzles is arranged towards the inside of the filter screen;

[0043] The inside of the filter screen can be filled with filler.

[0044] Optionally, the groundwater circulation well repair system,

[0045] The tank body further comprises a second body located above the ground, and the second body is internally provided with a third containing chamber in communication with the first containing chamber, the third containing chamber is in a conical structure, the second body is provided with a third through hole penetratingly arranged, and the third through hole is located at the center of the second body;

[0046] The groundwater circulation well repair system further comprises:

[0047] A tail gas treatment mechanism is located above the ground, the tail gas treatment mechanism comprises a gas collection pipe, a gas-liquid separation assembly and a tail gas treatment assembly, one end of the gas collection pipe is in communication with the third through hole, the inlet of the gas-liquid separation assembly is in communication with the other end of the gas collection pipe, and the inlet of the tail gas treatment assembly is in communication with the outlet of the gas-liquid separation assembly.

[0048] The technical scheme provided by the present application has the following advantages:

[0049] 1. The groundwater circulation well repair system provided by the present application comprises a circulation well body, a groundwater pumping and injecting mechanism, a filtering mechanism and an ultrasonic mechanism, the circulation well body comprises an upper screen pipe section and a lower screen pipe section located below the ground, the upper screen pipe section is arranged above the lower screen pipe section along the height direction, the upper screen pipe section is provided with a first water outlet, the lower screen pipe section is provided with a first water inlet, the groundwater pumping and injecting mechanism is installed in the circulation well body, a second water inlet of the groundwater pumping and injecting mechanism is located inside the lower screen pipe section, and a second water outlet of the groundwater pumping and injecting mechanism is located inside the upper screen pipe section, the groundwater pumping and injecting mechanism is used to guide the groundwater in the lower screen pipe section to the inside of the upper screen pipe section to form a three-dimensional vertical water flow circulation at the circulation well body, the filtering mechanism comprises a filtering screen, the filtering screen is installed in the upper screen pipe section and used to filter the groundwater flowing into the upper screen pipe section, the ultrasonic mechanism is located inside the circulation well body, the ultrasonic mechanism comprises an ultrasonic vibrator and a wave vibration plate, the ultrasonic vibrator is used to generate a high-frequency vibration signal to convert electrical energy into mechanical energy, the ultrasonic vibrator is connected with the wave vibration plate, and the wave vibration plate transmits the high-frequency vibration generated by the ultrasonic vibrator towards one side of the filtering screen.

[0050] The groundwater circulation well repair system has the advantages that the upper screen pipe section is arranged above the lower screen pipe section along the height direction, the upper screen pipe section is provided with the first water outlet, the lower screen pipe section is provided with the first water inlet, the second water inlet of the groundwater pumping and injecting mechanism installed in the circulation well body is located inside the lower screen pipe section, the second water outlet of the groundwater pumping and injecting mechanism is located inside the upper screen pipe section, and the filtering screen is installed in the upper screen pipe section, so that the water in the aquifer is introduced into the well by the lower screen pipe, then the water is injected into the aquifer from the upper screen pipe, the groundwater is circulated in three dimensions and vertically around the circulation well without being taken out of the ground, and the groundwater is continuously filtered; the ultrasonic mechanism is placed inside the circulation well body, the ultrasonic energy converter in the ultrasonic mechanism is connected with the wave vibration plate, the direction of the wave vibration plate emitting ultrasonic energy is towards one side of the filtering screen, and a large number of micro-gas nucleus cavitation bubbles are formed in the groundwater in the process of the wave vibration plate vibrating, when the sound pressure reaches the expected value, the micro-jet and shock wave generated by the vibration and repeated closing and bursting of the micro-gas nucleus cavitation bubbles can break down the insoluble stains and make them disperse in the water, when the pollutants and fine sand and other small particle blockages in the water flow adhere to the surface of the filter layer and the assembly, they can be quickly emulsified and fall off, and the microorganism agglomerates on the screen pipe can also be broken and peeled off, so that the groundwater circulation well repair system can significantly improve the pollutant repair efficiency of the groundwater circulation well system, and effectively improve the anti-blocking ability and service life of the screen pipe section of the well body compared with the conventional groundwater circulation well repair system using a vibration mechanism and a reset mechanism.

[0051] 2. The groundwater circulating well repair system provided by the present application, by additionally arranging a chemical oxidation mechanism and arranging the spraying direction of the fan-shaped nozzle to be towards the inside of the filter screen, can make the reagent fully contact with the filler in the filter screen, compared with not using the fan-shaped nozzle, can reduce the use amount of the reagent, and further reduce the production cost. BRIEF DESCRIPTION OF DRAWINGS

[0052] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the specific embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0053] Figure 1 A preferred embodiment of the groundwater circulating well repair system provided by the embodiment of the present application is shown in the structural schematic view.

[0054] Figure 2 A preferred embodiment of the groundwater circulating well repair system provided by the embodiment of the present application is shown in the structural schematic view.

[0055] Figure 3 A preferred embodiment of the groundwater circulating well repair system provided by the embodiment of the present application is shown in the structural schematic view.

[0056] Figure 4 A preferred embodiment of the groundwater circulating well repair system provided by the embodiment of the present application is shown in the structural schematic view.

[0057] Figure 5 A preferred embodiment of the groundwater circulating well repair system provided by the embodiment of the present application is shown in the structural schematic view.

[0058] Figure 6 A preferred embodiment of the groundwater circulating well repair system provided by the embodiment of the present application is shown in the structural schematic view.

[0059] Figure 7 A preferred embodiment of the groundwater circulating well repair system provided by the embodiment of the present application is shown in the structural schematic view.

[0060] Figure 8 A preferred embodiment of the groundwater circulating well repair system provided by the embodiment of the present application is shown in the structural schematic view.

[0061] Explanation of reference signs:

[0062] 1-circulating well body; 11-upper screen section; 111-first water outlet end; 12-lower screen section; 121-first water inlet end;

[0063] 21-pumping unit; 22-pumping pipe;

[0064] 3-filtering mechanism; 31-filtering screen; 32-connector; 321-square block; 322-trapezoidal block;

[0065] 4-ultrasonic mechanism; 41-wave vibration plate; 411-second through hole; 412-first channel; 42-ultrasonic vibrator; 43-wire; 44-power supply;

[0066] 5-tank body; 51-first body; 511-first containing chamber; 512-first through hole; 52-second body; 521-third containing chamber; 522-third through hole;

[0067] 6-water distribution assembly; 61-water distribution pipe; 611-water injection hole;

[0068] 71-central sleeve; 72-first partition plate; 73-seal; 74-second partition plate;

[0069] 81-liquid storage member; 82-first horizontal pipe; 83-first vertical pipe; 84-second horizontal pipe; 85-second vertical pipe; 86-regulating valve; 87-fan-shaped nozzle;

[0070] 91-gas collection pipe; 92-gas-liquid separation assembly; 93-tail gas treatment assembly. DETAILED DESCRIPTION

[0071] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0072] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0073] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0074] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0075] Example 1

[0076] This embodiment provides a groundwater circulation well repair system, such as Figures 1 to 8 As shown, the system includes a circulation well body 1, a groundwater injection mechanism, and a filtration mechanism 3. The circulation well body 1 includes an upper screen pipe section 11 and a lower screen pipe section 12 located below the ground. The upper screen pipe section 11 is positioned above the lower screen pipe section 12 along the height direction. The upper screen pipe section 11 has a first water outlet 111, and the lower screen pipe section 12 has a first water inlet 121. The groundwater injection mechanism is installed inside the circulation well body 1. The second water inlet of the groundwater injection mechanism is located inside the lower screen pipe section 12, and the second water outlet of the groundwater injection mechanism is located inside the upper screen pipe section 11. The groundwater injection mechanism is used to guide the groundwater in the lower screen pipe section 12 to the upper screen pipe section 11 to form a three-dimensional vertical water flow circulation at the circulation well body 1. The filtration mechanism 3 includes a filter screen 31, which is installed on the upper screen pipe section 11 and is used to filter the groundwater flowing into the upper screen pipe section 11. The groundwater circulation well repair system also includes an ultrasonic mechanism 4, which is located inside the circulation well body 1. The ultrasonic mechanism 4 includes an ultrasonic transducer 42 and a wave plate 41. The ultrasonic transducer is used to generate high-frequency vibration signals to convert electrical energy into mechanical energy. The wave plate is connected to the ultrasonic transducer and the wave plate 41 is used to transmit the high-frequency vibration emitted by the ultrasonic transducer toward the filter screen 31.

[0077] The groundwater circulating well repair system with the above structure, by arranging the upper screen pipe section 11 above the lower screen pipe section 12 along the height direction, arranging the first water outlet 111 on the upper screen pipe section 11, arranging the first water inlet 121 on the lower screen pipe section 12, arranging the second water inlet of the groundwater pumping and injecting mechanism installed in the circulating well body 1 inside the lower screen pipe section 12, and arranging the second water outlet of the groundwater pumping and injecting mechanism inside the upper screen pipe section 11, and arranging the filter screen 31 on the upper screen pipe section 11, the groundwater in the aquifer can be introduced into the circulating well body at the first water inlet 121 of the lower screen pipe section 12, then the water is transported to the inside of the upper screen pipe section 11 under the action of the groundwater pumping and injecting mechanism, and then filtered in the inside of the upper screen pipe section 11, and the filtered groundwater is injected back to the aquifer from the first water outlet 111 arranged on the upper screen pipe section 11, that is, the groundwater is not taken out of the ground while making the groundwater around the circulating well circulate in three-dimensional vertical flow, and the groundwater is continuously filtered; further, by arranging the ultrasonic mechanism inside the circulating well body 1, connecting the ultrasonic energy transducer in the ultrasonic mechanism with the wave vibration plate 41, and making the direction of the ultrasonic energy emitted by the wave vibration plate 41 towards the side of the filter screen 31, a large number of micro-gas nucleus cavitation bubbles are formed in the groundwater in the process of vibration of the wave vibration plate 41, when the sound pressure reaches the expected vertical, the micro-jets and shock waves generated by the vibration and repeated closing and bursting of the micro-gas nucleus cavitation bubbles destroy the insoluble stains and make them dispersed in the water, when the pollutants and small particle blockages such as fine sand in the water flow adhere to the filter layer and the surface of the component, they can be quickly emulsified and fall off, and the microbial aggregates on the screen pipe can also be broken and peeled off, therefore, compared with the traditional groundwater circulating well repair system using a vibration mechanism and a reset mechanism, the groundwater circulating well repair system with the above structure can significantly improve the pollutant repair efficiency of the groundwater circulating well system, effectively improve the anti-blocking ability and service life of the well body screen pipe section; in addition, the purified groundwater accumulated in the inside of the upper screen pipe section 11 will flow to the aquifer outside the upper screen pipe section 11 based on the pressure difference between the upper screen pipe section 11 and the space outside the circulating well body 1.

[0078] It can be explained that in the present embodiment, the first water inlet 121 and the first water outlet 111 can be filled with gravel and quartz sand to form an unsaturated filler area to provide a channel for hydraulic exchange between the aquifer and the circulating well body 1, and also to filter large particle impurities such as silt in the groundwater.

[0079] It should be noted that in the present embodiment, the first water inlet 121 is the liquid inlet through which the groundwater flows from the aquifer into the inside of the circulating well body 1, and the first water outlet 111 is the liquid outlet through which the groundwater flows out from the inside of the circulating well body 1 to the aquifer after being filtered in the inside of the circulating well body 1.

[0080] It can be explained that in the embodiment, the filter screen 31 can be formed by two layers of screen combined, and fixed under the action of the buckle to form a filter screen structure, the filler is filled between the two layers of screen, and the particle size of the filler is greater than the pore size of the screen hole on the filter screen 31, so that the filler can be limited by the upper and lower two layers of screen in the process of purifying and repairing groundwater, and the phenomenon of secondary pollution caused by loss of filler is avoided.

[0081] As Figures 1 to 8 shown, the groundwater circulation well repair system provided by the embodiment further comprises a tank body 5, the tank body 5 is provided with a first body 51 located below the ground, and the first body 51 is installed on the upper screen pipe section 11, the first body 51 is internally provided with a first containing chamber 511, the first body 51 is provided with a first through hole 512, the first through hole 512 is arranged through the bottom of the first body 51; the wave vibration plate 41 is installed inside the first containing chamber 511, and the lower wall surface of the wave vibration plate 41 is spaced apart from the inner wall surface below the first body 51, the wave vibration plate 41 is provided with a second through hole 411, the second through hole 411 is communicated with the first through hole 512 through a first channel 412, so that the filtered groundwater inside the tank body 5 flows to the outside of the tank body 5, such as the area below the tank body 5, and then flows back to the groundwater aquifer from the first water outlet end 111; wherein the wave vibration plate 41 is adaptively arranged with the first containing chamber 511, and the outer side wall of the wave vibration plate 41 abuts against the inner wall surface of the first containing chamber 511; the lower wall surface of the wave vibration plate 41, the outer wall surface of the first channel 412, the inner wall surface of the side of the first body 51 and the upper wall surface of the bottom of the first body 51 enclose to form a closed second containing chamber, the ultrasonic mechanism 4 further comprises a variable amplitude rod, the variable amplitude rod and the ultrasonic wave energy converter constitute an ultrasonic vibrator 42, and the ultrasonic vibrator 42 is located inside the second containing chamber.

[0082] It can be explained that in the embodiment, the first through hole 512 and the second through hole 411 are both through holes, the first channel 412 connects the two through holes as a groundwater flow channel, so that the groundwater can flow from the second through hole 411 to the first through hole 512.

[0083] It can be explained that in the embodiment, the wall surface of the side of the first body 51 is internally provided with a second channel, one end of the second channel is in communication with the second containing chamber, and the other end of the second channel extends above the ground. At this time, the ultrasonic mechanism 4 further comprises a power supply 44 placed above the ground, the power supply 44 is selected as an ultrasonic power supply, one end of the wire 43 is electrically connected with the electrical connection end of the ultrasonic vibrator 42, and the other end of the wire 43 is electrically connected with the electrical connection end of the power supply 44 after extending above the ground through the second channel. In the process of the power supply 44 functioning on the ultrasonic vibrator 42, the wire 43 is not in contact with the underground water, so as to avoid the phenomenon of short circuit caused by the damage of the power supply 44 line.

[0084] The groundwater circulation well repair system with the structure can not only effectively strip the chemical biological aggregates on the filter screen 31, prevent the filter screen 31 from being blocked and the aggregates from being secondarily accumulated, but also enhance the hydraulic turbulence and diffusion, accelerate the mixing of the oxidizing agent with the contaminated groundwater, and improve the activity of the oxidizing agent in the groundwater. In addition, the ultrasonic radiation can activate the filler, continuously flush the surface of the filler, and strip the attachments on the surface of the aged or mineralized filler, so as to maintain the high efficiency of the catalyst and the oxidizing agent. In addition, the lower wall surface of the wave vibration plate 41, the outer wall surface of the first channel 412, the inner wall surface of the side of the first body 51, and the upper wall surface of the bottom of the first body 51 form a closed second containing chamber, so that the ultrasonic vibrator 42 is not in contact with the underground water in the process of normal operation, and the phenomenon of circuit short circuit caused by contact with the underground water is avoided. In addition, the ultrasonic transducer converts the high-frequency electrical energy provided by the ultrasonic power supply into mechanical vibration, the mechanical vibration is increased in amplitude through the amplitude transformer, the efficiency of electrical and acoustic conversion is improved, the heat resistance is strengthened, and the service life of the ultrasonic transducer is prolonged. At the same time, the ultrasonic waves generated by the mechanical vibration after high-frequency vibration are transmitted to the filter screen 31 through the wave vibration plate 41 and the underground water. Since the ultrasonic waves have strong penetration and long propagation distance in water, the area immersed in the underground water level can form a radiation range, be subjected to ultrasonic radiation, and the impact and explosion effect of the micro-gas nucleus cavitation bubbles formed by the ultrasonic radiation can effectively strip the microbial aggregate attached to the multi-filter layer and prevent the aggregates from being secondarily accumulated to form stains.

[0085] Specifically, in the groundwater circulation well repair system provided in this embodiment, multiple sets of first through holes 512 are provided, and the multiple sets of first through holes 512 are spaced apart along a first direction. Any set of first through holes 512 includes multiple sets of first through holes 512 spaced apart along a second direction. Multiple sets of ultrasonic vibrators 42 are provided, and any set of ultrasonic vibrators 42 is located between two adjacent sets of first through holes 512. The multiple sets of ultrasonic vibrators 42 are spaced apart along the first direction. Any set of ultrasonic vibrators 42 includes multiple sets of ultrasonic vibrators 42 spaced apart along a second direction. The first direction is perpendicular to the second direction.

[0086] It can be noted that, in this embodiment, the structure of the first receiving chamber 511 is not limited, and it can be composed of one or more of the following: cylindrical structure, prism structure, or frustum structure.

[0087] In one embodiment, the first receiving chamber 511 is cylindrical; any set of ultrasonic transducers 42 and any set of first through holes 512 are coaxially arranged; wherein, the first direction is the radial direction of the end face of the wave plate 41, and the second direction is the circumferential direction of the end face of the wave plate 41. Of course, in other optional embodiments, the first receiving chamber 511 can also be prismatic, in which case the first direction can be the length direction of the end face of the wave plate 41, and the second direction is the width of the end face of the wave plate 41; the first receiving chamber 511 can also be frustum-shaped, with the first direction being the radial direction of the end face of the wave plate 41 and the second direction being the circumferential direction of the end face of the wave plate 41.

[0088] like Figures 1 to 8 As shown, the groundwater circulation well repair system provided in this embodiment includes a groundwater injection mechanism comprising a pump 21 and a pumping pipe 22. The pump 21 is installed inside the lower screen pipe section 12. One end of the pumping pipe 22 is connected to the pump 21 as a groundwater inlet, and the other end of the pumping pipe 22 passes through the bottom of the first body 51 and extends into the first receiving chamber 511 as a groundwater outlet. The groundwater circulation well repair system also includes a water distribution assembly 6, which includes a water distribution pipe 61. The water distribution pipe 61 is arranged horizontally, and one end of the water distribution pipe 61 is connected to the other end of the pumping pipe 22. The other end of the water distribution pipe 61 extends toward the inner wall of the side of the first body 51. The water distribution pipe 61 has multiple water spray holes 611, which are spaced apart along the axial direction and / or circumferential direction of the water distribution pipe 61. Multiple filter screens 31 are provided, which are spaced apart along the height direction, and each filter screen 31 is located below the water distribution pipe 61 along the height direction. The second water inlet is the inlet of the water pump 21, and the second water outlet is the end of the water pump 22 away from the water pump 21, and the second water outlet is located inside the tank 5.

[0089] It can be explained that in the embodiment, the plurality of water injection holes 611 arranged on any water distribution pipe 61 are arranged in three groups, any group of water injection holes 611 is arranged in the axial direction of the water distribution pipe 61, and the three groups of water injection holes 611 are arranged in the circumferential direction of the water distribution pipe 61, so as to complete uniform water distribution.

[0090] The groundwater circulation well repair system with the structure can form a lower pumping and upper injection form by installing the water pumping pump 21 inside the lower screen pipe section 12, and by connecting one end of the water pumping pipe 22 to the water pumping pump 21 and extending the other end of the water pumping pipe 22 into the first containing chamber 511. The plurality of filter screens 31 are arranged in the height direction, so that the groundwater passes through the plurality of filter screens 31 in turn under the influence of its own gravity, and the coarse particle impurities in the groundwater can be filtered.

[0091] It can be explained that in the embodiment, when the water pumping pipe 22 is installed, the central axis of the water pumping pipe 22 is arranged in line with the central axis of the circulation well body 1 and the central axis of the tank 5. That is, the water pumping pipe 22 is arranged vertically, and the central axis of the water pumping pipe 22 is arranged vertically to the central axis of the water distribution pipe 61.

[0092] It can be explained that in the embodiment, the height of the water distribution pipe 61 is higher than the water level of the groundwater.

[0093] It can be explained that in the embodiment, the water pumping pump 21 is a submersible pump that pumps the groundwater in the lower screen pipe section 12. After the water pumping pump 21 is started, the groundwater in the lower screen pipe section 12 is pumped into the water pumping pipe 22 by the submersible pump, and then flows into the water distribution pipe 61, and is sprayed from the water injection holes 611 arranged on the water distribution pipe 61 to the upper screen pipe section 11.

[0094] The groundwater circulation well repair system with the structure starts the submersible pump, so that the impeller in the submersible pump rotates continuously to form a vacuum low-pressure area. The contaminated groundwater in the aquifer near the lower screen pipe section 12 enters the lower screen pipe section 12 through the first water inlet end 121 and is continuously pumped into the pump. The contaminated groundwater enters the water pumping pipe 22 based on the centrifugal force generated when the impeller rotates. Then, the contaminated groundwater flows through the water pumping pipe 22 and enters the water distribution pipe 61, and is sprayed from the water injection holes 611 arranged below the water distribution pipe 61 to the upper screen pipe section 11. Subsequently, clean groundwater is formed under the action of the filtering mechanism 3 and the ultrasonic mechanism 4 and flows into the aquifer through the first water outlet end 111, thereby forming a three-dimensional vertical water flow circulation, and achieving the purpose of purifying the contaminated groundwater in the groundwater circulation well repair system.

[0095] It can be explained that the groundwater circulation well repair system provided by the embodiment further comprises a center sleeve 71 sleeved on the outer side wall of the water pumping pipe 22, specifically, sleeved on the outer side of the first body 51 located inside the first body 51, and the first body 51 located outside the first body 51 is not sleeved; any filter screen 31 is provided with at least one first mounting groove and at least one second mounting groove, the first mounting groove is located at the side of the filter screen 31, and the second mounting groove is located at the center of the filter screen 31; on any horizontal projection plane, the first mounting groove of any filter screen 31 and the first mounting groove of the adjacent filter screen 31 are arranged in a staggered manner in the circumferential direction of the water pumping pipe 22, and the second mounting groove of any filter screen 31 and the second mounting groove of the adjacent filter screen 31 are arranged in a staggered manner around the circumferential direction of the water pumping pipe 22; the filtering mechanism 3 further comprises a connecting piece 32, the connecting piece 32 is provided in plurality, and the plurality of connecting pieces 32 are respectively arranged corresponding to the first mounting groove and the second mounting groove; any connecting piece 32 is provided with a first connecting end and a second connecting end, the first connecting end of the connecting piece 32 arranged corresponding to the first mounting groove is connected with the inner wall surface of the side of the first body 51, and the second connecting end is clamped with the filter screen 31; the first connecting end of the connecting piece 32 arranged corresponding to the second mounting groove is connected with the outer wall surface of the center sleeve 71, and the second connecting end is clamped with the filter screen 31. For example, in the embodiment, the connection mode of the first connecting end with the outer wall surface of the center sleeve 71 or the inner wall surface of the side of the first body 51 can be welding.

[0096] Further, in the embodiment, any connecting piece 32 comprises a square block 321 and a trapezoidal block 322, the square block 321 is installed in the first mounting groove or the second mounting groove, the trapezoidal block 322 is connected with the square block 321, the trapezoidal block 322 is located below the square block 321 along the height direction, and the upper wall surface of the trapezoidal block 322 abuts against the lower wall surface of the filter screen 31.

[0097] Further, in the embodiment, a sealing piece 73 is further included, the sealing piece 73 can be selected as a sealing ring, at this time, the sealing piece 73 is installed between the outer wall of the water pumping pipe 22 and the inner wall of the center sleeve 71, so as to complete the fixation of the center sleeve 71 and the water pumping pipe 22.

[0098] It can be explained that in the two connecting pieces 32 which are projected in the same direction on any horizontal projection plane and arranged adjacent along the height direction, the geometric parameters of the lower wall surface of the trapezoidal block 322 in the upper connecting piece 32 are the same as the geometric parameters of the upper wall surface of the square block 321 in the lower connecting piece 32. It should be noted that the geometric parameters mentioned in the embodiment are length and width.

[0099] The groundwater circulation well repair system of the structure, when the square block 321 is installed, the outer wall surface of the square block 321 is connected with the first installation slot or the second installation slot to fix the filter screen 31, and the upper wall surface of the trapezoidal block 322 is abutted to the lower wall surface of the filter screen 31 to make the trapezoidal block 322 as a support structure of the filter screen 31, and the filter screen 31 is arranged in multiple layers in the height direction, and the connecting piece 32 is arranged correspondingly, so that the filler can be fixed at different heights to form a multiple filter structure arranged in the height direction.

[0100] Further, in the embodiment or other optional embodiments, the geometric parameters of the square blocks 321 in the multiple connecting pieces 32 at the same height are the same, and the geometric parameters of the trapezoidal blocks 322 in the multiple connecting pieces 32 at the same height are the same.

[0101] It should be noted that in the embodiment, the filter screen 31 at any height is provided with four connecting pieces 32, wherein the connecting pieces 32 connected with the outer wall surface of the center sleeve 71 are collectively referred to as inner connecting pieces 32, and the connecting pieces 32 connected with the inner wall surface of the side of the first body 51 are collectively referred to as outer connecting pieces 32. Specifically, two inner connecting pieces 32 and two outer connecting pieces 32 are provided, and the connecting line between the two inner connecting pieces 32 is arranged perpendicular to the connecting line between the two outer connecting pieces 32.

[0102] The groundwater circulation well repair system of the structure, by making the geometric parameters of the lower wall surface of the trapezoidal block 322 in the upper connecting piece 32 the same as the geometric parameters of the upper wall surface of the square block 321 in the lower connecting piece 32, after the filter screen 31 at any height and the filter screen 31 arranged above it are rotated by a certain angle such as 90° around the axis of the center sleeve 71 as the center, the first installation slot and the second installation slot arranged on the filter screen 31 are empty, and then the filter screen 31 is moved upward to be disassembled one by one, so as to recycle, replace the filler inside the filter screen 31 and remove the insoluble impurities attached to the surface of the filter screen 31.

[0103] As Figures 1 to 8As shown, the groundwater circulation well repair system provided by the embodiment further comprises a chemical oxidation mechanism, which comprises a liquid storage member 81, a liquid supply pipeline, an adjusting valve 86 and a fan-shaped nozzle 87. In the arrangement, the liquid storage member 81 is installed above the ground; the liquid supply pipeline comprises a first horizontal pipe 82, a first vertical pipe 83, a second horizontal pipe 84 and a second vertical pipe 85 which are sequentially communicated, the first horizontal pipe 82 and the first vertical pipe 83 are installed above the ground, the second horizontal pipe 84 and the second vertical pipe 85 are located inside the tank body 5, the first horizontal pipe 82 is communicated with a first liquid outlet end of the liquid storage member 81, an end of the second vertical pipe 85 away from the second horizontal pipe 84 extends to the inside of the water pumping pipe 22, the second vertical pipe 85 is provided with a plurality of second liquid outlet ends which are arranged at intervals along the axial direction of the water pumping pipe 22; the adjusting valve 86 is installed on the first horizontal pipe 82 or the first vertical pipe 83; the fan-shaped nozzle 87 is provided with a plurality of fan-shaped nozzles 87 which are arranged one by one corresponding to the second liquid outlet ends, the spraying direction of the fan-shaped nozzle 87 is arranged towards the inside of the filter screen 31; wherein the inside of the filter screen 31 is filled with filler.

[0104] The groundwater circulation well repair system with the above structure can make the medicament fully contact with the filler in the filter screen 31 by adding the chemical oxidation mechanism and arranging the spraying direction of the fan-shaped nozzle 87 towards the inside of the filter screen 31, which can reduce the use amount of medicament compared with the scheme without using the fan-shaped nozzle 87, and further reduce the production cost.

[0105] It can be explained that in the embodiment, the number of the second liquid outlet ends is determined according to the filter screen 31. As one of the implementation manners, two second liquid outlet ends are arranged corresponding to each filter screen 31, that is, two fan-shaped nozzles 87 are arranged corresponding to each filter screen 31, at this time, the spraying directions of the two fan-shaped nozzles 87 are arranged away from each other.

[0106] Further, the groundwater circulation well repair system provided by the embodiment can be used to cover the range that cannot be reached by the jet flow of the adjacent fan-shaped nozzle 87 in the height direction of the fan-shaped nozzle 87 in any horizontal projection plane, and the two fan-shaped nozzles 87 corresponding to any filter screen 31 are arranged in the circumferential direction of the central sleeve 71, the jet direction of each fan-shaped nozzle 87 is towards one peripheral connecting piece 32, and the height of each fan-shaped nozzle 87 is the same as the intermediate height of the upper and lower screens, so that the jet flow of the fan-shaped nozzle 87 can fully contact the filler inside the filter screen 31, the utilization rate of the reagent is improved, the use amount of the reagent is reduced, the problem of secondary pollution caused by excessive reagent is prevented, and the use amount of the reagent can be simply and effectively controlled through the adjusting valve 86.

[0107] It can be explained that in the embodiment, the second liquid outlet can be located inside the central sleeve 71, the central sleeve 71 is provided with a fourth through hole corresponding to the second liquid outlet, and the connecting end of the fan-shaped nozzle 87 is arranged in the fourth through hole and connected with the second liquid outlet in the inside of the central sleeve 71. Of course, the second liquid outlet can also extend to the outside of the central sleeve 71 through the wall of the central sleeve 71 and be connected with the connecting end of the fan-shaped nozzle 87.

[0108] It can be explained that in the embodiment, the fan-shaped nozzle 87 with a jet angle range of 0° to 150° is selected.

[0109] It should be noted that the second liquid outlet can be connected with the second vertical pipe 85 after the second vertical pipe 85 is arranged in the central sleeve 71, or a mold can be prepared in advance, that is, the second vertical pipe 85 and the second connecting end are formed at the same time in the process of forming the central sleeve 71.

[0110] The groundwater circulation well repair system has the groundwater pumping and injecting mechanism, the filtering mechanism 3, the ultrasonic mechanism 4 and the chemical oxidation mechanism arranged according to the structure of the tank 5, and the tank 5 serves as the basic support structure of the whole.

[0111] It can be explained that in the embodiment, the liquid storage member 81 is used to store reagents with activation and oxidation functions, such as potassium permanganate, persulfate, hydrogen peroxide or ozone.

[0112] It can be explained that the groundwater circulation well repair system provided by the embodiment fills the filter screen 31 with permeable filler, which is composed of one or more of biochar, activated carbon, slow-release material, composite material, zero-valent iron, and calcium peroxide, so that the filler can act as an adsorbent and a catalyst for the medicament. Specifically, the slow-release material is composed of one or more of microcapsules, gel-type persulfate slow-release material, or iron-carbon slow-release material, or calcium peroxide slow-release material. Since the slow-release material refers to the fixation of functional materials and active medicaments in slow-release preparations through slow-release preparations, the functional materials or medicaments can be continuously released for a long time to achieve a long-acting effect; the composite material is composed of one or more of transition metal-loaded carbon-based composite material and nano zero-valent iron-loaded carbon nanotube composite material.

[0113] The groundwater circulation well repair system with the above structure installs the fan-shaped nozzle 87 on the second liquid outlet and sets the jet direction of the fan-shaped nozzle 87 towards the inside of the filter screen 31, so that the medicament is dissolved and mixed in the liquid storage member 81 above the ground and then sprayed into the inside of the filter screen 31 through the liquid supply pipeline. At this time, since the plurality of second liquid outlets are arranged along the axial direction of the water pumping pipe 22, and the plurality of fan-shaped nozzles 87 are arranged one-to-one corresponding to the second liquid outlets, the medicament can be sprayed from the plurality of fan-shaped nozzles 87 to simultaneously enter the inside of the filter screen 31 arranged at different heights, thereby making the medicament contact with the filler in the corresponding filter screen 31, reducing the loss of the medicament, and achieving precise injection and efficient use of the medicament. At the same time, when the micro-gas nucleus cavitation bubbles generated by the ultrasonic mechanism break, local high temperature and high pressure are formed, and the impact and micro-jet disturbance generated can provide energy for the oxidation of the medicament, promote the rapid diffusion of the medicament in the groundwater, and disperse each filter screen 31, thereby improving the reaction activity of the medicament, reducing the use amount of the medicament, and stripping the oxidation aging layer on the outer surface of the filler reacted with the oxidized medicament, thereby maintaining the catalytic effect of the filler and improving the treatment efficiency of the groundwater circulation well repair system for organic pollutants.

[0114] As Figures 1 to 8As shown, the groundwater circulation well repair system provided by the embodiment further comprises a second body 52 located above the ground, and the second body 52 is internally provided with a third accommodating chamber 521 in communication with the first accommodating chamber 511, the third accommodating chamber 521 is in a conical structure, and the second body 52 is provided with a third through hole 522 penetratingly arranged, and the third through hole 522 is located at the center of the second body 52. At this time, the groundwater circulation well repair system further comprises a tail gas treatment mechanism, and the tail gas treatment mechanism is located above the ground, and the tail gas treatment mechanism comprises a gas collection pipe 91, a gas-liquid separation assembly 92 and a tail gas treatment assembly 93, one end of the gas collection pipe 91 is in communication with the third through hole 522, the inlet of the gas-liquid separation assembly 92 is in communication with the other end of the gas collection pipe 91, and the inlet of the tail gas treatment assembly 93 is in communication with the outlet of the gas-liquid separation assembly 92.

[0115] The groundwater circulation well repair system with the structure is provided, the pneumatic tail gas treatment assembly 93, the waste gas generated in the circulation well body 1 enters the gas collection pipe 91 through the third through hole 522, and then completes gas-liquid separation after flowing through the gas-liquid separation assembly 92, and the separated waste gas enters the tail gas treatment assembly 93 located above the ground to be concentrated and treated.

[0116] It can be explained that the groundwater circulation well repair system provided by the embodiment is provided, the second body 52 can be a gas collecting cover in an umbrella-shaped structure, the size of the gas collecting cover is matched with the circulation well body 1, at this time, if the circulation well body 1 is in a cylindrical structure, the outer diameter of the first body 51 is matched with the inner diameter of the circulation well body 1, so that the tank body 5 and the circulation well body 1 are combined to form a closed space, so that the waste gas can only be discharged through the third through hole 522, so that the pressure difference in the groundwater circulation well repair system can only be adjusted by the groundwater pumping and injecting mechanism, so as to realize purification and repair of the contaminated groundwater in three-dimensional hydraulic circulation flow.

[0117] As shown in the figure, Figures 1 to 8 As shown in the figure, the groundwater circulation well repair system provided by the embodiment further comprises a first partition plate 72, the first partition plate 72 is installed in the circulation well body 1, and the first partition plate 72 is installed at the connection between the upper screen pipe section 11 and the lower screen pipe section 12, and is used to separate the upper screen pipe section 11 and the lower screen pipe section 12.

[0118] As shown in the figure, Figures 1 to 8As shown, the groundwater circulation well repair system provided by the embodiment further comprises a second partition plate 74 arranged in the upper screen pipe section 11 and separating the upper screen pipe section 11 into two areas for installing the tank body 5 and for storing and discharging clean groundwater. At this time, the second partition plate 74 serves as a support structure for the tank body 5, and a fifth through hole coaxial with and communicating with the first passage 412 is arranged on the second partition plate 74, so that the clean groundwater obtained through the ultrasonic mechanism 4 flows downward under the action of gravity and is stored under the blockage of the first partition plate 72 until a certain volume is accumulated and then flows into the aquifer through the first water outlet end 111.

[0119] Obviously, the above embodiment is only an example for clearly illustrating the present application, and is not intended to limit the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments cannot be exhausted, and the obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A groundwater circulation well remediation system characterized by, The application relates to a groundwater circulation well repairing system. The groundwater circulation well repairing system comprises a circulation well body (1) which comprises at least an upper screen pipe section (11) and a lower screen pipe section (12) located underground, the upper screen pipe section (11) is arranged above the lower screen pipe section (12) along a height direction, the upper screen pipe section (11) is provided with a first water outlet end (111), and the lower screen pipe section (12) is provided with a first water inlet end (121); a groundwater pumping and injecting mechanism is arranged in the circulation well body (1), a second water inlet end of the groundwater pumping and injecting mechanism is located in the lower screen pipe section (12), a second water outlet end of the groundwater pumping and injecting mechanism is located in the upper screen pipe section (11), and the groundwater pumping and injecting mechanism is used for conveying underground water in the lower screen pipe section (12) to the inside of the upper screen pipe section (11) so as to form a three-dimensional vertical water flow circulation at the circulation well body (1); a filtering mechanism (3) which comprises a filtering screen (31) and is arranged in the upper screen pipe section (11) and used for filtering underground water flowing into the upper screen pipe section (11); an ultrasonic mechanism (4) which is arranged in the circulation well body (1) and comprises an ultrasonic vibrator (42) and a wave vibration plate (41), the ultrasonic vibrator (42) is used for converting electric energy into mechanical energy to generate a high-frequency vibration signal, the wave vibration plate (41) is connected with the ultrasonic vibrator (42), and the wave vibration plate (41) is used for transmitting the high-frequency vibration generated by the ultrasonic vibrator (42) to the side of the filtering screen (31); the groundwater circulation well repairing system further comprises a tank body (5) which is provided with a first body (51) located underground and is arranged in the upper screen pipe section (11), the first body (51) is internally provided with a first accommodating cavity (511), the first body (51) is provided with a first through hole (512) which is arranged through the bottom of the first body (51); the wave vibration plate (41) is arranged in the first accommodating cavity (511), a lower wall surface of the wave vibration plate (41) is arranged in a spaced mode with an inner wall surface below the first body (51), the wave vibration plate (41) is provided with a second through hole (411), the second through hole (411) is communicated with the first through hole (512) through a first channel (412), and underground water in the tank body (5) flows to the outside of the tank body (5) through the second through hole (411), the first channel (412) and the first through hole (512) in sequence. The wave vibration plate (41) is matched with the first accommodating cavity (511), and the outer side wall of the wave vibration plate (41) abuts against the inner wall surface of the first accommodating cavity (511); the lower wall surface of the wave vibration plate (41), the outer wall surface of the first channel (412), the inner wall surface of the side of the first body (51) and the upper wall surface of the bottom of the first body (51) form a closed second accommodating cavity, and the ultrasonic vibrator (42) is located inside the second accommodating cavity.

2. The groundwater circulation well repair system according to claim 1, wherein, The first through holes (512) are provided in multiple groups, the multiple groups of the first through holes (512) are arranged at intervals along a first direction, and any one group of the first through holes (512) comprises multiple first through holes (512) arranged at intervals along a second direction; The ultrasonic vibrators (42) are provided in multiple groups, any one group of the ultrasonic vibrators (42) is located between two adjacent groups of the first through holes (512), and the multiple groups of the ultrasonic vibrators (42) are arranged at intervals along the first direction, and any one group of the ultrasonic vibrators (42) comprises multiple ultrasonic vibrators (42) arranged at intervals along the second direction; The first direction is perpendicular to the second direction.

3. The groundwater circulation well repair system according to claim 2, wherein, The first accommodating cavity (511) has a cylindrical structure; Any one group of the ultrasonic vibrators (42) is coaxially arranged with any one group of the first through holes (512); The first direction is a radial direction of an end surface of the wave vibration plate (41), and the second direction is a circumferential direction of the end surface of the wave vibration plate (41).

4. The groundwater circulation well repair system according to claim 2 or 3, wherein, The groundwater pumping and injecting mechanism comprises a water pumping pump (21) and a water pumping pipe (22), the water pumping pump (21) is installed inside the lower screen pipe section (12), one end of the water pumping pipe (22) arranged along an axis thereof is in communication with the water pumping pump (21), and the other end of the water pumping pipe (22) arranged along the axis thereof extends to the inside of the first accommodating cavity (511) through the bottom of the first body (51); The groundwater pumping and injecting mechanism further comprises a water distribution assembly (6), the water distribution assembly (6) comprises a water distribution pipeline (61), the water distribution pipeline (61) is horizontally arranged, one end of the water distribution pipeline (61) arranged along an axis direction thereof is connected with the other end of the water pumping pipe (22) arranged along the axis direction thereof, the other end of the water distribution pipeline (61) arranged along the axis direction thereof extends towards the inner wall surface of the side of the first body (51), and the water distribution pipeline (61) is provided with multiple water injection holes (611), the multiple water injection holes (611) are arranged at intervals along the axis direction of the water distribution pipeline (61) and / or along a circumferential direction thereof; The filter screen (31) is provided in multiple groups, the multiple filter screens (31) are arranged at intervals along a height direction, and any one filter screen (31) is arranged below the water distribution pipeline (61) along the height direction; The second water inlet end is an inlet of the water pump (21), and the second water outlet end is an end of the water pumping pipe (22) away from the water pump (21) and located inside the tank body (5). 5.The groundwater circulation well repair system according to claim 4, characterized in that, The groundwater circulation well repair system further comprises a central sleeve (71) sleeved on the outer wall of the water pumping pipe (22). Any one of the filter screens (31) is provided with at least one first mounting groove and at least one second mounting groove, the first mounting groove is located at the side of the filter screen (31), and the second mounting groove is located at the center of the filter screen (31); in any horizontal projection plane, the first mounting groove of any one of the filter screens (31) is arranged in a staggered manner with the first mounting groove of an adjacent filter screen (31) in the circumferential direction of the water pumping pipe (22), and the second mounting groove of any one of the filter screens (31) is arranged in a staggered manner with the second mounting groove of an adjacent filter screen (31) around the circumferential direction of the water pumping pipe (22); The filter mechanism (3) further comprises a plurality of connecting pieces (32), and the plurality of connecting pieces (32) are respectively arranged corresponding to the first mounting groove and the second mounting groove; any one of the connecting pieces (32) is provided with a first connecting end and a second connecting end; the first connecting end of the connecting piece (32) corresponding to the first mounting groove is connected with the inner wall surface of the side of the first body (51), and the second connecting end is clamped with the filter screen (31); the first connecting end of the connecting piece (32) corresponding to the second mounting groove is connected with the outer wall surface of the central sleeve (71), and the second connecting end is clamped with the filter screen (31). 6.The groundwater circulation well repair system according to claim 5, characterized in that, Any one of the connecting pieces (32) comprises a square block (321) and a trapezoidal block (322); the first mounting groove and / or the second mounting groove are used for detachable connection with the square block (321); the trapezoidal block (322) is connected with the square block (321); the trapezoidal block (322) is located below the square block (321) along the height direction, and the upper wall surface of the trapezoidal block (322) abuts against the lower wall surface of the filter screen (31). 7.The groundwater circulation well repair system according to claim 6, characterized in that, in any horizontal projection plane, in two connecting pieces (32) which are arranged adjacent to each other along the height direction and have the same projection direction, the geometric parameters of the lower wall surface of the trapezoidal block (322) in the upper connecting piece (32) are the same as the geometric parameters of the upper wall surface of the square block (321) in the lower connecting piece (32); and / or the geometric parameters of the square blocks (321) in a plurality of connecting pieces (32) located at the same height are the same; and / or the geometric parameters of the trapezoidal blocks (322) in a plurality of connecting pieces (32) located at the same height are the same.

8. The groundwater circulation well remediation system of claim 5, wherein, The groundwater circulation well repair system further comprises a chemical oxidation mechanism, The chemical oxidation mechanism comprises: a liquid storage piece (81) installed above the ground; A liquid supply pipeline, the liquid supply pipeline comprises a first horizontal pipe (82), a first vertical pipe (83), a second horizontal pipe (84) and a second vertical pipe (85) which are communicated in sequence, the first horizontal pipe (82) and the first vertical pipe (83) are installed above the ground, the second horizontal pipe (84) and the second vertical pipe (85) are located inside the tank body (5), the first horizontal pipe (82) is communicated with the first liquid outlet end of the liquid storage piece (81), the second vertical pipe (85) extends to the inside of the water pumping pipe (22) at the end away from the second horizontal pipe (84), the second vertical pipe (85) is provided with a plurality of second liquid outlet ends, and the plurality of second liquid outlet ends are arranged in the axial direction of the water pumping pipe (22) in a spaced manner; An adjusting valve (86) is installed on the first horizontal pipe (82) or the first vertical pipe (83); A plurality of fan-shaped nozzles (87) are provided, and the plurality of fan-shaped nozzles (87) are arranged one by one corresponding to the second liquid outlet ends, and the spraying direction of the fan-shaped nozzles (87) is arranged towards the inside of the filter screen (31); Wherein, the inside of the filter screen (31) can be filled with filler.

9. The groundwater circulation well repair system according to claim 4, wherein, The tank body (5) further comprises a second body (52) located above the ground, and the second body (52) is internally provided with a third containing chamber (521) communicated with the first containing chamber (511), the third containing chamber (521) is in a conical structure, the second body (52) is provided with a third through hole (522) penetratingly arranged, and the third through hole (522) is located at the center of the second body (52); The groundwater circulation well repair system further comprises: An exhaust gas treatment mechanism located above the ground, the exhaust gas treatment mechanism comprises a gas collection pipe (91), a gas-liquid separation assembly (92) and an exhaust gas treatment assembly (93), one end of the gas collection pipe (91) is communicated with the third through hole (522), the inlet of the gas-liquid separation assembly (92) is communicated with the other end of the gas collection pipe (91), and the inlet of the exhaust gas treatment assembly (93) is communicated with the outlet of the gas-liquid separation assembly (92).

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