A groundwater organic contaminant recirculation well and method of use

Abstract

The application relates to the technical field of groundwater organic pollutants, and discloses a circulating well for groundwater organic pollutants and a use method thereof, which comprises an outer well and a well cover, the well cover is fixedly connected to the top end of the outer well, a feeding mechanism is arranged at the top of the inner well, the space on the inner side of the annular plate is reduced through the sealing cloth polymerization, the water flow volume entering the inside of the sealing cloth is reduced, the water flow after volume reduction is aerated by the aeration head, the activity range of the water flow and oxygen is reduced, the collision frequency of the unit volume water flow and oxygen is increased, the water flow mixed with the repair medicament is doubly aerated through the sealing cloth, the problem of uneven aeration of the water flow is avoided, the content of the dissolved oxygen in the unit volume water flow is increased, sufficient oxygen is provided for the degradation of the water flow in the medicament filling area, and the degradation effect of the organic matter pollutants in the water flow is ensured.

Description

Technical Field

[0001] This invention relates to the field of groundwater organic pollutant technology, specifically to a circulating well for groundwater organic pollutants and its usage method. Background Technology

[0002] Organic pollution of groundwater refers to the presence of toxic organic matter in groundwater that may cause direct or indirect harm to human health. Some organic pollutants are difficult to degrade in the environment, can persist in groundwater for a long time, and can migrate with groundwater flow, causing more extensive groundwater pollution and long-term damage to the groundwater ecosystem. Groundwater remediation generally adopts extraction treatment or in-situ chemical injection and other remediation technologies to convert toxic pollutants into non-toxic substances. Among them, in-situ chemical injection remediation technology enhances the efficient oxidation and degradation of pollutants by injecting strong oxidizing agents.

[0003] Chinese invention patent CN206955867U discloses a circulating well device for in-situ remediation of organically polluted groundwater, comprising: a circulating well, an aeration system, a biological treatment system, and a reagent dosing system; the circulating well is divided into an inner well and an outer well; the inner well and the outer well are divided into upper and lower sections separated by a partition; the aeration system includes an air pump, an air delivery pipe, and aeration heads; the biological treatment system includes a microbial packing zone, a submersible pump, a water pumping pipe, and spray heads; the reagent dosing system includes a remediation reagent storage container, a dosing pump, a reagent delivery pipe, a reagent dosing pipe, and a reagent addition pipe. This invention has a simple structure, integrates the advantages of groundwater circulating well technology, and can effectively improve the removal effect of recalcitrant organic matter in groundwater, thereby increasing remediation efficiency.

[0004] Furthermore, the unique low-oxygen and dark environment of groundwater poses technical challenges to in-situ chemical injection for the degradation of organic pollutants in groundwater wells. While oxygen itself is not a primary activator of persulfate, it can participate in the activation process under certain conditions, enhancing its oxidizing capacity and degradation efficiency. Therefore, sufficient oxygen intake can improve the efficiency of electron transfer in advanced oxidation processes, thereby improving the activation and remediation effect. However, in the chemical packing zone, resistance exists in the transfer of oxygen from the gas phase to the liquid phase and then to the surface of the packing. Insufficient aeration or low mass transfer efficiency can cause the packing to be in a hypoxic or anaerobic state, thus affecting the oxidant's effectiveness. The aeration device of this equipment is fixedly installed in the circulation well because it activates and reduces electron transfer efficiency and degradation capacity. Uneven aeration can easily lead to uneven oxygen content in the sewage, which in turn affects the degradation effect. At the same time, the equipment can be adjusted according to the meter when adding remediation agents. However, if too much remediation agent is added, it is easy for the remediation agent to be underutilized, which can lead to reduced utilization of the remediation agent and waste of resources. Therefore, the circulation well device for in-situ remediation of organic polluted groundwater disclosed in Chinese invention patent CN206955867U cannot achieve energy-saving and efficient degradation operation. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a circulating well for organic pollutants in groundwater and its usage method, which has advantages such as improving the aeration effect and degradation efficiency of wastewater, and solves the problems of uneven aeration and poor degradation effect of groundwater.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the present invention provides the following technical solution: a circulating well for organic pollutants in groundwater, comprising an outer well and a well cover, wherein the well cover is fixedly connected to the top of the outer well.

[0009] The feeding mechanism includes a chemical delivery pipe that runs through and connects to the inside of the manhole cover, and a feeding assembly located in the middle of the manhole cover;

[0010] The circulation mechanism includes a telescopic pipe that passes through and is fixedly connected to the middle of the manhole cover, and a circulation component disposed at the bottom of the manhole cover;

[0011] The adjustment mechanism includes three screen pipes arranged in a circular array starting at the bottom of the outer well, and an adjustment assembly disposed inside the outer well.

[0012] Preferably, the feeding assembly includes a valve snapped into the inside of the agent delivery pipe, a connecting pipe symmetrically and fixedly connected to the outer wall of the valve, an agent addition pipe fixedly connected to the end of the connecting pipe away from the valve, an aeration delivery pipe fixedly connected to the top of the telescopic pipe, and a screen pipe arranged in a ring array on the outer wall of the top of the outer well.

[0013] Preferably, the agent addition pipe is equipped with a valve inside, the agent addition pipe is fixedly connected to the inner wall of the well cover, the screen pipe is kept horizontal with the groundwater surface, and the agent delivery pipe is equipped with a metering and detection device inside.

[0014] Preferably, the circulation assembly includes an inner well fixedly connected to the lower surface of the well cover. The top of the inner well has a screen pipe arranged in a circular array. The upper and lower surfaces of the inner well are fixedly connected to an inner well center. A baffle is fixedly connected to the middle of the inner well center. Two guide pipes are symmetrically and fixedly connected through the inside of the baffle. The bottom ends of the two guide pipes are connected to a flexible hose. A spray head is connected through the top ends of the two guide pipes. A chemical filler area is fixedly connected to the inner wall of the inner well.

[0015] Preferably, the spray head is electrically connected to the external control device, the guide pipe is connected through the interior of the agent filling area, the baffle is adapted to the inner cavity size of the outer well, and the inner well size is adapted to the inner well top size.

[0016] Preferably, the second screen tube is located between the groundwater level and the ground surface, and the telescopic tube is electrically connected to the metering and detection device.

[0017] Preferably, the adjusting assembly includes a funnel-shaped groove plate fixedly and continuously connected to the bottom end of the inner cavity of the inner well. A sealing cloth is fixedly and continuously connected to the bottom end of the funnel-shaped groove plate. Several support rods are rotatably connected in a ring array on the outer wall of the sealing cloth. An annular plate is rotatably connected between the ends of the several support rods away from the funnel-shaped groove plate. Six telescopic sliding rods are fixedly and continuously connected in a ring array on the outer wall of the annular plate. Six slots are arranged in a ring array on the inner wall of the inner well. Air guide pipes are symmetrically and continuously connected to the outer wall of the telescopic pipes. An air collecting groove plate is fixedly and continuously connected between the ends of the air guide pipes away from the telescopic pipes. Several aeration heads are fixedly and continuously connected in a ring array inside the air collecting groove plate.

[0018] Preferably, both the sealing cloth and the annular plate are made of rubber, the deformation performance of the annular plate is less than that of the sealing cloth, the telescopic slide rod slides inside the slot, and the bottom end of the telescopic pipe is fixedly connected to the sealing cloth set at the bottom of the outer well.

[0019] Preferably, the aeration head is electrically connected to the external control device, the hose is connected to the sealing cloth at the bottom of the outer well, and the sealing cloth is fixedly connected to the annular plate.

[0020] A method for using a circulating well for organic pollutants in groundwater includes the following steps:

[0021] Step 1: The operator opens the valve, allowing the repair agent to flow from the feed box through the agent delivery pipe into the space between the bottom of the inner well and the bottom of the outer well;

[0022] Step 2: Turn on the external equipment, start the spray head and aeration head, so that the spray head absorbs the water flow in the sealing cloth, guides the polluted water at the bottom of the well into the well, and mixes with the agent;

[0023] Step 3: When the mixed water flows through the inner well, baffle, funnel trough plate and enters the sealing cloth in sequence, control the airflow of the aeration device to enter the air collection trough plate and the aeration head to aerate the water flow in the sealing cloth.

[0024] Step 4: The aerated water flows into the spray head and is sprayed into the chemical packing area. After degradation, the water flows to the bottom of the chemical packing area.

[0025] Step 5: Open the valve again to allow the agent to enter the top of the inner well. The degradation water at the bottom of the inner well flows into the outside, carrying the agent into the groundwater surface and spreading it.

[0026] (III) Beneficial Effects

[0027] Compared with the prior art, the present invention provides a circulating well for organic pollutants in groundwater and a method for its use, which has the following beneficial effects:

[0028] 1. By using a sealing cloth installed at the top of the inner well, the space inside the annular plate is reduced, resulting in a smaller volume of water entering the sealing cloth. This allows the aeration heads to aerate the reduced water volume, further narrowing the range of water and oxygen movement and increasing the collision frequency between water and oxygen per unit volume. Simultaneously, the sealing cloth provides dual aeration for the water mixed with the remediation agent, preventing uneven aeration and increasing the dissolved oxygen content per unit volume of water. This provides sufficient oxygen for degradation within the agent packing zone, ensuring the effective degradation of organic pollutants within the water.

[0029] 2. The metering and detection device installed inside the chemical delivery pipe controls the degree of polymerization of the sealing cloth through the telescopic pipe, thereby controlling the water flow rate at the bottom of the outer well. This avoids the problem of excessive chemical dosage leading to resource waste.

[0030] 3. After collecting and degrading the polluted water at the bottom of the groundwater through the external well, it is discharged through the top. The degraded water flow carries the remediation agent to perform preliminary remediation on the sewage at the top of the groundwater, which reduces the pollution level of the water flow at the top of the groundwater, reduces the risk of secondary pollution of the water flow at the bottom of the groundwater, and prevents the problem of rebound of the remediation effect. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of a circulating well for organic pollutants in groundwater, as proposed in this invention.

[0032] Figure 2 This is a schematic diagram of the reagent delivery pipe and well cover structure in a circulating well for organic pollutants in groundwater, as proposed in this invention.

[0033] Figure 3 This is a partial structural diagram of a feeding component in a circulating well for organic pollutants in groundwater, as proposed in this invention.

[0034] Figure 4 This is a partial structural diagram of a circulation component in a circulation well for circulating organic pollutants in groundwater, as proposed in this invention.

[0035] Figure 5 This is a schematic diagram of the structure of the inner well and the guide pipe in the circulation well for organic pollutants in groundwater, as proposed in this invention.

[0036] Figure 6 This is a partial structural diagram of a regulating component in a circulating well for organic pollutants in groundwater, as proposed in this invention.

[0037] Figure 7 This is a schematic diagram of the annular plate and slot structure in a circulating well for organic pollutants in groundwater, as proposed in this invention.

[0038] Figure 8 This is a schematic diagram of the telescopic pipe and gas collection trough plate structure in a circulating well for organic pollutants in groundwater, as proposed in this invention.

[0039] Figure 9 This is a schematic diagram of the process for using a circulating well for organic pollutants in groundwater, as proposed in this invention.

[0040] In the diagram: 101, outer well; 102, well cover; 200, feeding mechanism; 201, chemical delivery pipe; 202, feeding assembly; 2031, valve; 2032, connecting pipe; 2033, chemical addition pipe; 2034, aeration delivery pipe; 2035, screen pipe one; 300, circulation mechanism; 301, telescopic pipe; 302, circulation assembly; 3031, upper part of the inner well; 3032, screen pipe two; 3033, middle part of the inner well; 3034, baffle; 3 035. Guide pipe; 3036. Hose 1; 3037. Spray head; 3038. Chemical filling area; 3039. Inner well; 400. Adjustment mechanism; 401. Screen pipe 3; 402. Adjustment component; 4031. Funnel groove plate; 4032. Sealing cloth; 4033. Support rod; 4034. Annular plate; 4035. Telescopic slide bar; 4036. Slot; 4037. Air guide pipe; 4038. Air collection groove plate; 4039. Aeration head. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Example:

[0043] See attached document Figures 1 to 9 As shown, a circulating well for groundwater organic pollutants and its usage method include an outer well 101 and a well cover 102, wherein the well cover 102 is fixedly connected to the top of the outer well 101.

[0044] The feeding mechanism 200 includes a chemical delivery pipe 201 that runs through and connects to the inside of the manhole cover 102, a metering and detection device installed inside the chemical delivery pipe 201, and a feeding component 202 located in the middle of the manhole cover 102.

[0045] The circulation mechanism 300 includes a telescopic pipe 301 that is fixedly connected to the middle of the manhole cover 102, the telescopic pipe 301 being electrically connected to the metering and detection device, and a circulation component 302 disposed at the bottom of the manhole cover 102.

[0046] The regulating mechanism 400 includes three screen tubes 401 arranged in a ring array starting at the bottom of the outer well 101, and a regulating component 402 disposed inside the outer well 101.

[0047] Furthermore, the feeding assembly 202 includes a valve 2031 snapped into the inside of the agent delivery pipe 201. A connecting pipe 2032 is symmetrically and fixedly connected to the outer wall of the valve 2031. An agent addition pipe 2033 is fixedly connected to the end of the connecting pipe 2032 away from the valve 2031. The agent addition pipe 2033 is fixedly connected to the inner wall of the well cover 102. A valve 2031 is installed inside the agent addition pipe 2033. An aeration delivery pipe 2034 is fixedly connected to the top of the telescopic pipe 301. Screen pipes 2035 are arranged in a ring array on the outer wall of the top of the outer well 101. The screen pipes 2035 are kept horizontal with the groundwater surface.

[0048] It should be noted that: the agent delivery pipe 201 is connected to the externally installed repair agent feeding box, and the bottom end of the agent delivery pipe 201 is located between the baffle 3034 and the screen pipe 401. The aeration delivery pipe 2034 is connected to the externally installed aeration device, and the bottom end of the agent addition pipe 2033 is located between the baffle 3034 and the screen pipe 2035.

[0049] Furthermore, the circulation component 302 includes an inner well top 3031 fixedly connected to the lower surface of the well cover 102. A second screen pipe 3032 is arranged in a circular array at the top of the inner well top 3031, positioned between the groundwater level and the ground surface. An inner well center 3033 is fixedly connected to the lower surface of the inner well top 3031, its size matching that of the inner well top 3031. A baffle 3034 is fixedly connected to the middle of the inner well center 3033, and the baffle 3034 is connected to the inner surface of the outer well 101. The cavity size is compatible, and two guide pipes 3035 are symmetrically and fixedly connected inside the baffle 3034. The bottom ends of the two guide pipes 3035 are connected to a hose 3036. The top ends of the two guide pipes 3035 are connected to a spray head 3037. The spray head 3037 is electrically connected to an external control device. A chemical filling area 3038 is fixedly connected to the inner wall of the inner well 3031, and the guide pipes 3035 are connected inside the chemical filling area 3038.

[0050] Furthermore, the adjustment component 402 includes a funnel-shaped groove plate 4031 fixedly connected to the bottom end of the inner cavity of the inner well 3033. A sealing cloth 4032 is fixedly connected to the bottom end of the funnel-shaped groove plate 4031. The bottom end of the telescopic pipe 301 is fixedly connected to the sealing cloth 4032 at the bottom of the outer well 101. A flexible hose 3036 is connected to the sealing cloth 4032 at the bottom of the outer well 101. Several support rods 4033 are arranged in a ring array and rotatably connected on the outer wall of the sealing cloth 4032. An annular plate 4034 is rotatably connected between the ends of the several support rods 4033 away from the funnel-shaped groove plate 4031. The sealing cloth 4032 is fixedly connected to the annular plate 4034. The sealing cloth 4032 and the annular plate 4034 are made of the same material. All are made of rubber. The deformation performance of the annular plate 4034 is less than that of the sealing cloth 4032. Six telescopic sliding rods 4035 are fixedly connected in a ring array on the outer wall of the annular plate 4034. Six slots 4036 are arranged in a ring array on the inner wall of the inner well 3039. The telescopic sliding rods 4035 slide inside the slots 4036. A gas guide pipe 4037 is symmetrically fixedly connected to the outer wall of the telescopic pipe 301. A gas collecting trough plate 4038 is fixedly connected to the end of the gas guide pipe 4037 away from the telescopic pipe 301. Several aeration heads 4039 are fixedly connected in a ring array inside the gas collecting trough plate 4038. There is an electrical connection between the aeration heads 4039 and the external control equipment.

[0051] It should be noted that the overall structure of the sealing cloth 4032 and the annular plate 4034 is a frustum shape that is wide in the middle and narrow at the top and bottom. During the extension and retraction of the annular plate 4034, the sealing cloth 4032 can be extended towards the inner wall of the outer well 101 through the support rod 4033, and the annular plate 4034 can drive the two sealing cloths 4032 connected to it to move closer to each other, thereby reducing the space inside the two sealing cloths 4032.

[0052] A method for using a circulating well for organic pollutants in groundwater includes the following steps:

[0053] Step 1: The operator opens valve 2031, allowing the repair agent to flow from the feed box through the agent delivery pipe 201 into the space between the bottom of the inner well 3039 and the bottom of the outer well 101;

[0054] Step 2: Turn on the external equipment and start the spray head 3037 and aeration head 4039 so that the spray head 3037 absorbs the water flow in the sealing cloth 4032 and guides the polluted water at the bottom of the external well 101 into the well to mix with the agent.

[0055] Step 3: When the mixed water flows through the inner well 3033, baffle 3034, funnel trough plate 4031 in sequence and enters the sealing cloth 4032, the airflow of the aeration device is controlled to enter the air collection trough plate 4038, and the aeration head 4039 aerates the water flow in the sealing cloth 4032.

[0056] Step 4: The aerated water flows into the spray head 3037 and is sprayed into the chemical packing area 3038. After degradation, the water flows to the bottom of the chemical packing area 3038.

[0057] Step 5: Open valve 2031 again to allow the agent to enter the top of 3033 in the inner well. The degradation water at the bottom of 3031 in the inner well flows into the outside, carrying the agent into the groundwater surface and spreading it.

[0058] The following describes the working process and principle of the above embodiments:

[0059] The initial states are as follows: the telescopic tube 301 is in an uncontracted state, the annular plate 4034 is in an unextended state, the sealing cloth 4032 is in an unstretched state, and the telescopic slide rod 4035 is in an uncompressed state.

[0060] The work steps are as follows:

[0061] First, the operator opens valve 2031, allowing the repair agent feed box to flow through agent delivery pipe 201 into the space between the inner well bottom 3039 and the bottom inner wall of the outer well 101. Then, via external control equipment, the spray head 3037 and aeration head 4039 are activated. The spray head 3037 absorbs the water flow inside the sealing cloth 4032 through the guide pipe 3035, causing the contaminated water at the bottom of the outer well 101 to enter the space between the outer well 101 and the inner well bottom 3039 through the screen pipe 401. This allows the contaminated water to come into contact with and mix with the repair agent delivered through agent delivery pipe 201, and the mixed water flows through the inner well. The bottom of the middle section 3033 enters the interior of the baffle 3034, allowing the mixed water flow to enter the interior of the funnel-shaped trough plate 4031 through the bottom of the inner well 3033, and then enter the interior of the sealing cloth 4032 through the funnel-shaped trough plate 4031. At the same time, the airflow inside the aeration device replenishes the gas inside the air collection trough plate 4038 through the telescopic pipe 301 and the air guide pipe 4037, allowing the aeration head 4039 to begin aeration of the mixed water flow inside the sealing cloth 4032 through the air collection trough plate 4038. After aeration, the mixed water flow is replenished with oxygen, and finally, through the hose 3036 and the guide pipe... Pipe 3035 enters the interior of spray head 3037, causing spray head 3037 to spray mixed water into the interior of chemical filling area 3038. The water degraded within chemical filling area 3038 falls to the bottom of chemical filling area 3038. Simultaneously, valve 2031 inside chemical addition pipe 2033 is opened, allowing the repair agent inside chemical delivery pipe 201 to enter the top of inner well 3033 through connecting pipe 2032 and chemical addition pipe 2033. This allows the degraded water at the bottom of inner well 3031 to enter the outer side of inner well 3031 through the top of inner well 3033. As the water flow outside 3031 continuously accumulates and rises, the degraded water flow eventually carries the remediation agent inside 3033 in the inner well through the screen pipe 2035 into the surface of the groundwater. It then begins to diffuse outwards and initially remediates the surrounding sewage. The polluted water at the bottom of the groundwater is collected and degraded through the outer well 101 and discharged through the top. The degraded water flow carries the remediation agent to initially remediate the sewage at the top of the groundwater, reducing the pollution level of the water flow at the top of the groundwater, reducing the risk of secondary pollution of the water flow at the bottom of the groundwater, and preventing the problem of rebound in the remediation effect.

[0062] When the metering and detection device installed inside the chemical delivery pipe 201 detects an increase in the amount of repair agent added inside the chemical delivery pipe 201, the metering and detection device controls the telescopic pipe 301 to begin contracting upwards. This causes the telescopic pipe 301 to move synchronously with the sealing cloth 4032 fixedly connected to the bottom. The sealing cloth 4032, under the guidance of the telescopic slide rod 4035, expands towards the inner wall of the inner wellbore 3039, causing the annular plate 4034 to move synchronously with the support rod 4033. The support rod 4033 then causes the sealing cloth 4032 to converge, and the annular plate 4034, in turn, causes the telescopic slide rod 4035 to move synchronously upwards within the slot 4036. Subsequently, the sealing cloth 4032 at the bottom of the inner wellbore 3039... The sealing cloth 4032 at the top of the 032 contact with the sealing cloth 4032 at the top of the inner well 3039, causing the sealing cloth 4032 at the top to aggregate synchronously. This reduces the space inside the annular plate 4034, thus reducing the volume of water entering the sealing cloth 4032. This allows the aeration head 4039 to aerate the reduced volume of water, further narrowing the range of water and oxygen movement and increasing the collision frequency between water and oxygen per unit volume. Simultaneously, the sealing cloth 4032 provides double aeration to the water mixed with the remediation agent, preventing uneven aeration and increasing the dissolved oxygen content per unit volume of water. This provides sufficient oxygen for the degradation of organic pollutants within the agent packing area 3038, ensuring the degradation effect of organic pollutants within the water.

[0063] The metering and detection device installed inside the chemical delivery pipe 201 controls the degree of polymerization of the sealing cloth 4032 through the telescopic pipe 301, thereby controlling the water flow rate flowing into the bottom of the outer well 101. This avoids the problem of excessive dosage of repair chemicals leading to waste of resources.

[0064] It should be noted that the term "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0065] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A circulating well for organic pollutants in groundwater, comprising an outer well (101) and a well cover (102), wherein the well cover (102) is fixedly connected to the top of the outer well (101), characterized in that: The feeding mechanism (200) includes a chemical delivery pipe (201) that runs through and connects to the inside of the manhole cover (102), and a feeding assembly (202) disposed in the middle of the manhole cover (102). The circulation mechanism (300) includes a telescopic pipe (301) that is fixedly connected to the middle of the manhole cover (102) and a circulation assembly (302) disposed at the bottom of the manhole cover (102). The regulating mechanism (400) includes three screen pipes (401) arranged in a ring array at the bottom of the outer well (101) and a regulating component (402) disposed inside the outer well (101). The top end of the telescopic pipe (301) is fixedly connected to an aeration conveying pipe (2034), and a screen pipe (2035) is arranged in a ring array on the outer wall of the top of the outer well (101). The first screen tube (2035) is kept horizontal with the groundwater surface; The circulation component (302) includes an inner well top (3031) fixedly connected to the lower surface of the well cover (102). The top of the inner well top (3031) is provided with screen pipes (3032) arranged in a ring array. The lower surface of the inner well top (3031) is fixedly connected to an inner well middle (3033). The middle part of the inner well middle (3033) is fixedly connected to a baffle (3034). The inside of the baffle (3034) is symmetrically connected to two guide pipes (3035). The bottom ends of the two guide pipes (3035) are connected to a hose (3036). The top ends of the two guide pipes (3035) are connected to a spray head (3037). The inner wall of the inner well top (3031) is fixedly connected to a chemical filling area (3038). The second screen tube (3032) is located between the groundwater level and the ground surface; The adjusting assembly (402) includes a funnel-shaped groove plate (4031) fixedly and continuously connected to the bottom end of the inner cavity of the inner well (3033). A sealing cloth (4032) is fixedly and continuously connected to the bottom end of the funnel-shaped groove plate (4031). Several support rods (4033) are rotatably connected in a ring array on the outer wall of the sealing cloth (4032). An annular plate (4034) is rotatably connected between the ends of the several support rods (4033) away from the funnel-shaped groove plate (4031). The outer side of the annular plate (4034) Six telescopic sliding rods (4035) are fixedly connected in a ring array on the wall. Six slots (4036) are arranged in a ring array on the inner wall of the inner well (3039). A gas guide pipe (4037) is symmetrically fixedly connected to the outer wall of the telescopic pipe (301). A gas collecting trough plate (4038) is fixedly connected to the end of the gas guide pipe (4037) away from the telescopic pipe (301). Several aeration heads (4039) are fixedly connected in a ring array inside the gas collecting trough plate (4038). The telescopic slide rod (4035) slides inside the slot (4036), and the bottom end of the telescopic pipe (301) is fixedly connected to the sealing cloth (4032) provided at the bottom of the outer well (101); The first hose (3036) is connected to the sealing cloth (4032) at the bottom of the outer well (101), and the sealing cloth (4032) is fixedly connected to the annular plate (4034).

2. The circulating well for organic pollutants in groundwater according to claim 1, characterized in that: The feeding assembly (202) includes a valve (2031) snapped into the inside of the drug delivery pipe (201). A connecting pipe (2032) is symmetrically and fixedly connected to the outer wall of the valve (2031). A drug addition pipe (2033) is fixedly connected to the end of the connecting pipe (2032) away from the valve (2031).

3. The circulating well for organic pollutants in groundwater according to claim 2, characterized in that: The agent addition pipe (2033) is equipped with a valve (2031) inside. The agent addition pipe (2033) is fixedly connected to the inner wall of the well cover (102). The agent delivery pipe (201) is equipped with a metering and detection device inside.

4. The circulating well for organic pollutants in groundwater according to claim 1, characterized in that: The spray head (3037) is electrically connected to the external control device. The guide pipe (3035) is connected through the interior of the agent filling area (3038). The baffle (3034) is adapted to the inner cavity size of the outer well (101). The inner well (3033) is adapted to the size of the inner well top (3031).

5. A circulating well for organic pollutants in groundwater according to claim 1, characterized in that: There is an electrical connection between the telescopic tube (301) and the metering and testing device.

6. The circulating well for organic pollutants in groundwater according to claim 1, characterized in that: Both the sealing cloth (4032) and the annular plate (4034) are made of rubber, and the deformation performance of the annular plate (4034) is less than that of the sealing cloth (4032).

7. A circulating well for organic pollutants in groundwater according to claim 1, characterized in that: The aeration head (4039) is electrically connected to an external control device.

8. The method for using a circulating well for treating organic pollutants in groundwater as described in any one of claims 1-7, characterized in that, Includes the following steps: Step 1: The operator opens the valve (2031) to allow the repair agent to flow from the feed box through the agent delivery pipe (201) into the space between the bottom of the inner well (3039) and the bottom of the outer well (101); Step 2: Turn on the external equipment, start the spray head (3037) and aeration head (4039), so that the spray head (3037) absorbs the water flow in the sealing cloth (4032), guides the polluted water at the bottom of the outer well (101) into the well, and mixes with the agent; Step 3: When the mixed water flows through the inner well (3033), baffle (3034), funnel trough plate (4031) in sequence and enters the sealing cloth (4032), the airflow of the aeration device is controlled to enter the air collection trough plate (4038), and the aeration head (4039) aerates the water flow in the sealing cloth (4032); Step 4: The aerated water flows into the spray head (3037) and is sprayed into the chemical packing area (3038). After degradation, the water flows to the bottom of the chemical packing area (3038). Step 5: Open valve (2031) again to allow the agent to enter the top of the inner well (3033). The degradation water at the bottom of the inner well (3031) flows into the outside, driving the agent to flow into the groundwater surface and spread.

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