Circulating well for organic pollutants in underground water and use method of circulating well

Abstract

The invention relates to the technical field of underground water organic pollutants, and discloses an underground water organic pollutant circulating well and a using method thereof.The underground water organic pollutant circulating well comprises an outer well body and a well lid, the well lid is fixedly connected to the top end of the outer well body, and a feeding mechanism is arranged. The volume of water flow entering the sealing cloth is reduced, then the aeration head aerates the water flow with the reduced volume, the movement range of the water flow and oxygen is reduced, the collision frequency of the water flow in unit volume and the oxygen is increased, meanwhile, the water flow mixed with the remediation agent is subjected to double aeration through the sealing cloth, and the remediation effect is improved. The problem of non-uniform aeration of the water flow is avoided, the content of dissolved oxygen in the water flow in unit volume is increased, sufficient oxygen is further provided for degradation of the water flow in the medicament filler area, and the degradation effect of organic pollutants in the water flow is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of organic pollutants in groundwater, and particularly to a circulation well for organic pollutants in groundwater and a using method thereof. Background Technique

[0002] Organic pollution in groundwater means that the organic substances existing in groundwater are toxic and may cause direct or indirect harm to human health. Some organic pollutants are difficult to degrade in the environment, can exist in groundwater for a long time and migrate with the flow of groundwater, causing a larger range of groundwater pollution and long-term ecological system harm to groundwater. The remediation of groundwater generally adopts extraction treatment or in-situ injection of drugs and other remediation technical means to convert toxic pollutants into non-toxic substances. Among them, the in-situ injection drug remediation technology strengthens the efficient oxidation and degradation of pollutants by injecting strong oxidizing agents.

[0003] A Chinese invention patent with the publication number of CN206955867U discloses a circulation well device for in-situ remediation of organic polluted groundwater, including: a circulation well, an aeration system, a biological treatment system and a drug dosing system; the circulation 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, and are separated by a partition in the middle; the aeration system includes an air pump, an air delivery pipe and an aeration head; the biological treatment system includes a microbial packing area, a submersible pump, a water suction pipe and a spraying head; the drug dosing system includes a remediation drug storage container, a dosing pump, a drug delivery pipe, a drug dosing pipe and a drug addition pipe. The utility model has a simple structure, combines the technical advantages of the groundwater circulation well, can effectively improve the removal effect of refractory organic substances in groundwater and improve the remediation efficiency.

[0004] In addition, the unique low-oxygen and dark environment of groundwater poses technical challenges to the in-situ injection of drugs for the degradation of organic pollutants in groundwater wells. Since oxygen itself is not the main activator of persulfate, but in some cases, oxygen can participate in the activation process of persulfate, enhancing the oxidation ability and degradation efficiency of persulfate. Therefore, injecting sufficient oxygen can improve the electron transfer efficiency in the advanced oxidation process and enhance the activation repair effect. However, in the pharmaceutical packing area, there is resistance during the process of oxygen transferring from the gas phase to the liquid phase and then to the surface of the pharmaceutical packing. If the aeration is insufficient or the mass transfer efficiency is low, the pharmaceutical packing will be in an anoxic or anaerobic state, which will affect the activation of the oxidant, reduce the electron transfer efficiency and degradation ability. Therefore, the aeration device of this equipment is fixedly installed in the circulation well. If the aeration is uneven, it is easy to cause uneven oxygen content in the sewage, which will affect the degradation effect of the sewage. At the same time, when this equipment dispenses the repair agent, it can be adjusted according to the meter. However, when too much repair agent is dispensed, it is easy to cause the repair agent not to be fully utilized, resulting in a decrease in the utilization rate of the repair agent and waste of resources. Therefore, a circulation well device for in-situ remediation of organic-polluted groundwater disclosed in Chinese invention patent CN206955867U cannot operate in an energy-saving and efficient manner for degradation. Summary of the Invention

[0005] (1) Technical problems to be solved

[0006] In view of the deficiencies of the prior art, the present invention provides a circulation well for groundwater organic pollutants and its use method, which has the advantages of improving the aeration effect of sewage and the degradation efficiency of sewage, and solves the problems of uneven aeration and poor degradation effect of groundwater.

[0007] (2) Technical solutions

[0008] To achieve the above objectives, the present invention provides the following technical solutions: A circulation well for groundwater organic pollutants includes an outer well and a manhole cover, and the manhole cover is fixedly connected to the top of the outer well.

[0009] A feeding mechanism, including a pharmaceutical delivery pipe penetrating and connecting to the inside of the manhole cover, and a feeding component arranged in the middle of the manhole cover;

[0010] A circulation mechanism, including a telescopic pipe penetrating and fixedly connected to the middle of the manhole cover, and a circulation component arranged at the bottom of the manhole cover;

[0011] An adjustment mechanism, including a third screen pipe starting from the bottom of the outer well arranged in an annular array, and an adjustment component arranged inside the outer well.

[0012] Preferably, the feeding assembly includes a valve clamped inside the chemical agent delivery pipe. Symmetrically and fixedly connected through the outer wall of the valve are communicating pipes. The ends of the communicating pipes away from the valve are fixedly and through-connected with chemical agent adding pipes. The top end of the telescopic pipe is fixedly and through-connected with an aeration delivery pipe. On the outer wall of the top of the outer well, a first sieve tube is arranged in an annular array.

[0013] Preferably, a valve is arranged inside the chemical agent adding pipe. The chemical agent adding pipe is fixedly and through-connected to the inner wall of the well cover. The first sieve tube is level with the groundwater surface. A metering and detection device is installed inside the chemical agent delivery pipe.

[0014] Preferably, the circulation assembly includes being fixedly connected to the inner well on the lower surface of the well cover. On the top of the inner well, a second sieve tube is arranged in an annular array. The upper and lower surfaces of the inner well are fixedly connected by the middle part of the inner well. In the middle of the middle part of the inner well, a baffle is fixedly connected. Symmetrically and fixedly connected through the baffle are two diversion pipes. The bottom ends of the two diversion pipes are both through-connected with a first flexible pipe. Between the top ends of the two diversion pipes, a spray head is through-connected. On the inner wall of the inner well, a chemical agent filling area is fixedly connected.

[0015] Preferably, there is an electrical connection relationship between the spray head and an external control device. The diversion pipe is through-connected inside the chemical agent filling area. The baffle is adapted to the inner cavity size of the outer well. The middle part of the inner well is adapted to the size of the inner well on the top.

[0016] Preferably, the second sieve tube is between the groundwater level and the ground surface. There is an electrical connection relationship between the telescopic pipe and the metering and detection device.

[0017] Preferably, the adjustment assembly includes a funnel-shaped trough plate fixedly and through-connected to the bottom end of the inner cavity of the middle part of the inner well. The bottom end of the funnel-shaped trough plate is fixedly and through-connected with a sealing cloth. Rotationally connected to the outer wall of the sealing cloth in an annular array are a number of support rods. Between the ends of the number of support rods away from the funnel-shaped trough plate, a ring plate is rotationally connected. Fixedly connected to the outer wall of the ring plate in an annular array are six telescopic sliding rods. On the inner wall of the lower part of the inner well, six clamping grooves are arranged in an annular array. Symmetrically and fixedly connected through the outer wall of the telescopic pipe are air guide pipes. Between the ends of the air guide pipes away from the telescopic pipe, a gas collecting trough plate is fixedly and through-connected. Inside the gas collecting trough plate, a number of aeration heads are fixedly connected in an annular array.

[0018] Preferably, both the sealing cloth and the ring plate are made of rubber. The deformation performance of the ring plate is less than that of the sealing cloth. The telescopic sliding rod slides inside the clamping groove. The bottom end of the telescopic pipe is fixedly connected to the sealing cloth arranged at the bottom of the outer well.

[0019] Preferably, there is an electrical connection between the aeration head and the external control device. The first hose is connected to the sealing cloth arranged at the bottom of the outer well in a penetrating manner, and the sealing cloth is fixedly connected to the annular plate.

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

[0021] Step 1: The operator opens the valve to allow the remediation agent to flow from the feeding tank through the agent delivery pipe into the space between the inner well bottom and the outer well bottom;

[0022] Step 2: Start the external device, start the spraying head and the aeration head, so that the spraying head absorbs the water flow in the sealing cloth, guides the polluted water at the bottom of the outer well to enter, and mixes with the agent;

[0023] Step 3: When the mixed water flow successively passes through the middle of the inner well, the baffle, and the funnel trough plate and enters the sealing cloth, control the air flow of the aeration device to enter the air collection trough plate, and the aeration head aerates the water flow in the sealing cloth;

[0024] Step 4: The aerated water flow enters the spraying head and is sprayed onto the agent filling area, and the degraded water flow falls to the bottom of the agent filling area;

[0025] Step 5: Open the valve again to allow the agent to enter the top of the inner well. The degraded water flow at the upper and lower bottoms of the inner well enters the outside, driving the agent to flow into the groundwater surface and diffuse.

[0026] (III) Beneficial effects

[0027] Compared with the prior art, the present invention provides a circulation well for groundwater organic pollutants and a method for using the same, having the following beneficial effects:

[0028] 1. Through the polymerization of the sealing cloth arranged at the top and bottom of the inner well, the space inside the annular plate is reduced, so that the volume of the water flow entering the sealing cloth becomes smaller. Then, the aeration head aerates the reduced-volume water flow, thereby reducing the activity range of the water flow and oxygen, increasing the collision frequency of the unit-volume water flow and oxygen. At the same time, the sealing cloth double-aerates the water flow mixed with the remediation agent, avoiding the problem of uneven aeration of the water flow, improving the dissolved oxygen content in the unit-volume water flow, and thus providing sufficient oxygen for the degradation of the water flow inside the agent filling area, ensuring the degradation effect of the organic pollutants in the water flow.

[0029] 2. The metering and detection device installed inside the agent delivery pipe controls the polymerization degree of the sealing cloth through the telescopic pipe, thereby controlling the water flow rate flowing into the bottom of the outer well, avoiding the problem of waste of resources caused by the excessive input of the remediation agent that cannot be fully utilized.

[0030] 3. The polluted water at the bottom of the groundwater is collected and degraded through the outer well and discharged through the top. The degraded water flow drives the repair agent to preliminarily repair the sewage at the top of the groundwater, reducing the pollution degree of the water flow at the top of the groundwater and also reducing the risk of secondary pollution of the water flow at the bottom of the groundwater, and preventing the problem of the rebound of the repair effect. Description of the Drawings

[0031] Figure 1 Schematic diagram of the overall structure of a circulating well for organic pollutants in groundwater proposed by the present invention;

[0032] Figure 2 Schematic diagram of the structure of the chemical agent delivery pipe and the manhole cover in a circulating well for organic pollutants in groundwater proposed by the present invention;

[0033] Figure 3 Schematic diagram of the partial structure of the feeding assembly in a circulating well for organic pollutants in groundwater proposed by the present invention;

[0034] Figure 4 Schematic diagram of the partial structure of the circulating assembly in a circulating well for organic pollutants in groundwater proposed by the present invention;

[0035] Figure 5 Schematic diagram of the structure of the inner well and the diversion pipe in a circulating well for organic pollutants in groundwater proposed by the present invention;

[0036] Figure 6 Schematic diagram of the partial structure of the adjustment assembly in a circulating well for organic pollutants in groundwater proposed by the present invention;

[0037] Figure 7 Schematic diagram of the structure of the annular plate and the card slot in a circulating well for organic pollutants in groundwater proposed by the present invention;

[0038] Figure 8 Schematic diagram of the structure of the telescopic pipe and the gas collecting trough plate in a circulating well for organic pollutants in groundwater proposed by the present invention;

[0039] Figure 9 Schematic diagram of the process flow of the usage method of a circulating well for organic pollutants in groundwater proposed by the present invention.

[0040] In the figure: 101, outer well; 102, well cover; 200, feeding mechanism; 201, chemical agent delivery pipe; 202, feeding assembly; 2031, valve; 2032, connecting pipe; 2033, chemical agent adding pipe; 2034, aeration delivery pipe; 2035, screen pipe 1; 300, circulation mechanism; 301, telescopic pipe; 302, circulation assembly; 3031, upper part of inner well; 3032, screen pipe 2; 3033, middle part of inner well; 3034, baffle; 3035, diversion pipe; 3036, flexible pipe 1; 3037, spray head; 3038, chemical agent filling area; 3039, lower part of inner well; 400, adjustment mechanism; 401, screen pipe 3; 402, adjustment assembly; 4031, funnel trough plate; 4032, sealing cloth; 4033, support rod; 4034, annular plate; 4035, telescopic slide bar; 4036, clamping groove; 4037, air guide pipe; 4038, air collecting trough plate; 4039, aeration head. Detailed implementation mode

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative work shall fall within the protection scope of the present invention.

[0042] Embodiment:

[0043] Referring to the attached Figures 1 to 9 As shown, a circulating well for underground water organic pollutants and its use method include an outer well 101 and a well cover 102. The well cover 102 is fixedly connected to the top of the outer well 101.

[0044] The feeding mechanism 200 includes a chemical agent delivery pipe 201 penetrating and connecting to the inside of the well cover 102. A metering and detection device is installed inside the chemical agent delivery pipe 201, and a feeding assembly 202 is arranged in the middle of the well cover 102.

[0045] The circulation mechanism 300 includes a telescopic pipe 301 penetrating and fixedly connected to the middle of the well cover 102. There is an electrical connection relationship between the telescopic pipe 301 and the metering and detection device, and a circulation assembly 302 is arranged at the bottom of the well cover 102.

[0046] The adjustment mechanism 400 includes screen pipes 3 401 arranged in an annular array starting from the bottom of the outer well 101, and an adjustment assembly 402 arranged inside the outer well 101.

[0047] Further, the feeding assembly 202 includes a valve 2031 clamped inside the medicament delivery pipe 201. Symmetrically and fixedly connected to the outer wall of the valve 2031 in a penetrating manner are communicating pipes 2032. The end of the communicating pipe 2032 away from the valve 2031 is fixedly and penetratingly connected to a medicament addition pipe 2033. The medicament addition pipe 2033 is fixedly connected through the inner wall of the well cover 102. A valve 2031 is arranged inside the medicament addition pipe 2033. The top end of the telescopic pipe 301 is fixedly and penetratingly connected to an aeration delivery pipe 2034. On the outer wall of the top of the outer well 101, a first sieve pipe 2035 is arranged in a circular-array layout, and the first sieve pipe 2035 is level with the groundwater surface.

[0048] It should be noted that: the medicament delivery pipe 201 is communicated with a repair medicament feeding box arranged outside, and the bottom end of the medicament delivery pipe 201 is between the baffle 3034 and the third sieve pipe 401. The aeration delivery pipe 2034 is connected to an aeration device arranged outside, and the bottom end of the medicament addition pipe 2033 is between the baffle 3034 and the first sieve pipe 2035.

[0049] Further, the circulation assembly 302 includes an upper inner well 3031 fixedly connected to the lower surface of the well cover 102. A second sieve pipe 3032 is arranged in a circular-array layout on the top of the upper inner well 3031. The second sieve pipe 3032 is between the groundwater level and the ground surface. The lower surface of the upper inner well 3031 is fixedly connected to a middle inner well 3033. The middle inner well 3033 is adapted to the size of the upper inner well 3031. A baffle 3034 is fixedly connected to the middle of the middle inner well 3033. The baffle 3034 is adapted to the inner cavity size of the outer well 101. Two diversion pipes 3035 are symmetrically and fixedly connected through the baffle 3034. The bottom ends of the two diversion pipes 3035 are both fixedly connected to a first flexible pipe 3036. A sprinkler head 3037 is fixedly connected between the top ends of the two diversion pipes 3035. There is an electrical connection relationship between the sprinkler head 3037 and an external control device. A medicament filling area 3038 is fixedly connected to the inner wall of the upper inner well 3031. The diversion pipes 3035 are connected through the medicament filling area 3038.

[0050] Further, the adjusting component 402 includes a funnel groove plate 4031 fixedly and penetratingly connected to the bottom end of the inner well 3033 cavity. A sealing cloth 4032 is fixedly and penetratingly connected to the bottom end of the funnel groove plate 4031. The bottom end of the telescopic pipe 301 is fixedly connected to the sealing cloth 4032 arranged at the bottom of the outer well 101. The first hose 3036 is penetratingly connected to the sealing cloth 4032 arranged at the bottom of the outer well 101. A plurality of support rods 4033 are rotatably connected to the outer wall of the sealing cloth 4032 in an annular array. An annular plate 4034 is rotatably connected between the ends of the plurality of support rods 4033 away from the funnel 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 both 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 to the outer wall of the annular plate 4034 in an annular array. Six clamping grooves 4036 are arranged on the inner wall of the lower inner well 3039 in an annular array. The telescopic sliding rods 4035 slide inside the clamping grooves 4036. Guide air pipes 4037 are symmetrically and fixedly and penetratingly connected to the outer wall of the telescopic pipe 301. A collecting air groove plate 4038 is fixedly and penetratingly connected between the ends of the guide air pipes 4037 away from the telescopic pipe 301. A plurality of aeration nozzles 4039 are fixedly connected to the inside of the collecting air groove plate 4038 in an annular array. There is an electrical connection relationship between the aeration nozzles 4039 and the external control device.

[0051] It should be noted that: the overall structure of the sealing cloth 4032 and the annular plate 4034 is in the shape of a frustum of a cone with a wide middle and narrow upper and lower ends. During the telescopic process of the annular plate 4034, it can drive the sealing cloth 4032 to expand towards the inner wall of the outer well 101 through the support rods 4033, and can make the annular plate 4034 drive the two connected sealing cloths 4032 to approach each other, so that the space inside the two sealing cloths 4032 is reduced.

[0052] A method for using a circulation well for underground water organic pollutants includes the following steps:

[0053] Step 1: The operator opens the valve 2031 to allow the repair agent to flow from the feeding tank through the agent delivery pipe 201 between the lower inner well 3039 and the bottom of the outer well 101.

[0054] Step 2: Start the external device, start the spray head 3037 and the aeration nozzle 4039, so that the spray head 3037 absorbs the water flow inside the sealing cloth 4032, guides the polluted water at the bottom of the outer well 101 to enter, and mixes with the agent.

[0055] Step 3: When the mixed water flow successively flows through the inner well 3033, the baffle 3034, and the funnel groove plate 4031 and enters the sealing cloth 4032, control the air flow of the aeration device to enter the collecting air groove plate 4038, and the aeration nozzle 4039 aerates the water flow inside the sealing cloth 4032.

[0056] Step Four: The water flow after aeration enters the sprinkler head 3037 and is sprayed onto the chemical filling area 3038. The degraded water flow falls to the bottom of the chemical filling area 3038.

[0057] Step Five: Open the valve 2031 again to allow the chemical to enter the top of the inner well 3033. The degraded water flow at the bottom of the upper part 3031 of the inner well enters the outside, driving the chemical to flow into the groundwater surface for diffusion.

[0058] The following is the working process and principle of the above embodiment:

[0059] Initial state: The telescopic pipe 301 is in an unshrunk 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] Working steps:

[0061] First, the operator opens valve 2031, allowing the repair agent feeding tank to flow through the agent delivery pipe 201 into the space between the bottom inner wall of the inner well 3039 and the bottom of the outer well 101. Subsequently, the operator controls the spray head 3037 and the aeration head 4039 to start working through an external control device. The spray head 3037 absorbs the water flow inside the sealing cloth 4032 through the diversion pipe 3035. The contaminated water at the bottom of the outer well 101 enters the space between the outer well 101 and the inner well 3039 through the third sieve tube 401, coming into contact and mixing with the repair agent released from the agent delivery pipe 201. The mixed water flow enters the inside of the baffle 3034 through the bottom of the middle part of the inner well 3033, and then enters the inside of the funnel trough plate 4031 through the bottom of the middle part of the inner well 3033 and further enters the inside of the sealing cloth 4032 through the funnel trough plate 4031. At the same time, the air flow inside the aeration device supplements gas into the inside of the gas collection trough plate 4038 through the telescopic pipe 301 and the air guide pipe 4037, and the aeration head 4039 starts to aerate the mixed water flow inside the sealing cloth 4032 through the gas collection trough plate 4038. After the mixed water flow is aerated, oxygen is supplemented into the mixed water flow. Finally, the mixed water flow enters the inside of the spray head 3037 through the first hose 3036 and the diversion pipe 3035, and the spray head 3037 sprays the mixed water flow into the inside of the agent filling area 3038. The water flow degraded inside the agent filling area 3038 falls to the bottom of the agent filling area 3038. Meanwhile, the valve 2031 provided inside the agent addition pipe 2033 is opened, allowing the repair agent inside the agent delivery pipe 201 to enter the top of the middle part of the inner well 3033 through the connecting pipe 2032 and the agent addition pipe 2033. The water flow degraded at the bottom of the upper part of the inner well 3031 enters the outside of the upper part of the inner well 3031 through the top of the middle part of the inner well 3033. As the water flow outside the upper part of the inner well 3031 continuously accumulates and rises, finally, the degraded water flow drives the repair agent inside the middle part of the inner well 3033 to flow into the groundwater surface through the first sieve tube 2035, and starts to spread around the water surface, preliminarily repairing the surrounding sewage. The contaminated water at the bottom of the groundwater is collected and degraded by the outer well 101 and then discharged through the top. The degraded water flow drives the repair agent to preliminarily repair the sewage at the top of the groundwater, reducing the pollution degree of the water flow at the top of the groundwater and also reducing the risk of secondary pollution of the water flow at the bottom of the groundwater, and preventing the problem of the rebound of the repair effect from occurring.

[0062] When the metering and detection device installed inside the chemical agent delivery pipe 201 detects an increase in the amount of the repair chemical agent delivered inside the chemical agent delivery pipe 201, the metering and detection device controls the telescopic pipe 301 to start contracting upward, causing the telescopic pipe 301 to drive the sealing cloth 4032 fixedly connected to the bottom to move synchronously, causing the sealing cloth 4032 arranged at the bottom to contact the annular plate 4034 connected thereto and expand toward the side close to the inner well bottom 3039 inner wall under the guiding action of the telescopic slide rod 4035, causing the annular plate 4034 to drive the support rod 4033 to move synchronously, causing the support rod 4033 to drive the sealing cloth 4032 to start aggregating, and causing the annular plate 4034 to drive the telescopic slide rod 4035 to move upward synchronously inside the card slot 4036. Subsequently, the sealing cloth 4032 arranged at the bottom of the inner well bottom 3039 contacts the sealing cloth 4032 arranged at the top, thereby causing the sealing cloth 4032 arranged at the top of the inner well bottom 3039 to aggregate synchronously, thereby causing the space inside the annular plate 4034 to shrink, thereby causing the volume of the water flow entering the sealing cloth 4032 to become smaller, thereby causing the aeration head 4039 to aerate the water flow with the reduced volume, thereby reducing the activity range of the water flow and oxygen, increasing the collision frequency of the water flow and oxygen per unit volume, and at the same time, double-aerating the water flow mixed with the repair chemical agent through the sealing cloth 4032, avoiding the problem of uneven aeration of the water flow, improving the dissolved oxygen content in the water flow per unit volume, thereby providing sufficient oxygen for the degradation of the water flow inside the chemical agent packing area 3038 and ensuring the degradation effect of the organic pollutants inside the water flow.

[0063] The metering and detection device installed inside the chemical agent delivery pipe 201 controls the aggregation degree 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, avoiding the problem of waste of resources caused by the excessive delivery of the repair chemical agent that cannot be fully utilized.

[0064] It should be noted that the term "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0065] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A circulation well for removing organic pollutants from 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: A feeding mechanism (200) comprises a medicine delivery pipe (201) penetrating and connected to the interior of the manhole cover (102), and a feeding assembly (202) arranged in the middle of the manhole cover (102); A circulation mechanism (300) comprising a telescopic tube (301) passing through and fixedly connected to the middle of the manhole cover (102), and a circulation assembly (302) arranged at the bottom of the manhole cover (102); The regulating mechanism (400) comprises screen tubes (401) arranged in a circular array starting from the bottom of the outer well (101), and a regulating assembly (402) arranged inside the outer well (101).

2. A circulation well for removing organic pollutants from groundwater according to claim 1, characterized in that: The feeding assembly (202) comprises a valve (2031) clamped inside 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); an aeration delivery pipe (2034) is fixedly connected to the top of the telescopic pipe (301); and a screen pipe (2035) is arranged in a circular array on the outer wall of the top of the outer well (101).

3. A circulation well for removing organic pollutants from groundwater according to claim 2, characterized in that: The reagent adding pipe (2033) is provided with a valve (2031) inside, the reagent adding pipe (2033) penetrates and is fixedly connected to the inner wall of the manhole cover (102), the screen pipe 1 (2035) is kept horizontal with the groundwater surface, and a metering and detection device is installed inside the reagent conveying pipe (201).

4. A circulation well for removing organic pollutants from groundwater according to claim 2, characterized in that: The circulation component (302) includes an inner well top (3031) fixedly connected to the lower surface of the manhole cover (102), a screen tube 2 (3032) arranged in a circular array at the top of the inner well top (3031), an inner well center (3033) fixedly connected to the lower surface of the inner well top (3031), a baffle (3034) fixedly connected to the middle of the inner well center (3033), two guide pipes (3035) symmetrically penetrated and fixedly connected inside the baffle (3034), a hose 1 (3036) is penetrated and connected to the bottom ends of the two guide pipes (3035), a spray head (3037) is penetrated and connected between the top ends of the two guide pipes (3035), and a pharmaceutical filling area (3038) is fixedly connected to the inner wall of the inner well top (3031).

5. A circulation well for removing organic pollutants from groundwater according to claim 4, characterized in that: There is an electrical connection between the spray head (3037) and the external control device, the guide tube (3035) is connected to the inside of the medicine filling area (3038), the baffle (3034) is adapted to the inner cavity size of the outer well (101), and the size of the inner well (3033) is adapted to the size of the inner well (3031).

6. A circulation well for removing organic pollutants from groundwater according to claim 4, characterized in that: The second screen pipe (3032) is located between the underground water level and the ground, and there is an electrical connection between the telescopic pipe (301) and the metering and detecting device.

7. A circulation well for removing organic pollutants from groundwater according to claim 4, characterized in that: The regulating assembly (402) comprises a funnel trough plate (4031) fixedly connected to the bottom end of the inner cavity of the inner well (3033), a sealing cloth (4032) fixedly connected to the bottom end of the funnel trough plate (4031), a plurality of support rods (4033) arranged in a circular array and rotatably connected to the outer wall of the sealing cloth (4032), a ring plate (4034) rotatably connected between the ends of the plurality of support rods (4033) away from the funnel trough plate (4031), and the outer wall of the ring plate (4034) Six telescopic slide bars (4035) are arranged in a circular array and fixedly connected thereto; six slots (4036) are arranged in a circular array on the inner wall of the inner well (3039); an air guide tube (4037) is symmetrically fixedly connected to the outer wall of the telescopic tube (301); an air collecting trough plate (4038) is fixedly connected to the end of the air guide tube (4037) away from the telescopic tube (301); and a plurality of aeration heads (4039) are arranged in a circular array and fixedly connected thereto inside the air collecting trough plate (4038).

8. A circulation well for removing organic pollutants from groundwater according to claim 7, characterized in that: The sealing cloth (4032) and the annular plate (4034) are both made of rubber. The deformation performance of the annular plate (4034) is smaller than that of the sealing cloth (4032). The telescopic slide rod (4035) slides inside the slot (4036). The bottom end of the telescopic tube (301) is fixedly connected to the sealing cloth (4032) arranged at the bottom of the outer well (101).

9. A circulation well for removing organic pollutants from groundwater according to claim 7, characterized in that: There is an electrical connection between the aeration head (4039) and the external control device, the hose 1 (3036) is connected to the sealing cloth (4032) provided at the bottom of the outer well (101), and the sealing cloth (4032) is fixedly connected to the annular plate (4034).

10. The method for using a circulation well for groundwater organic pollutants according to any one of claims 1 to 9, characterized in that: The following steps are involved: 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 the 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) to enter, and mix with the reagent; Step 3: When the mixed water flows through the inner well (3033), the baffle (3034), the funnel slot plate (4031) in sequence and enters the sealing cloth (4032), the airflow of the aeration device is controlled to enter the air collecting slot 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 to the reagent filling area (3038). After degradation, the water flows to the bottom of the reagent filling area (3038); Step 5: Open the valve (2031) again to allow the reagent to enter the top of the inner well (3033), and the degradation water flow at the bottom of the inner well (3031) enters the outside, driving the reagent to flow into the groundwater surface and diffuse.

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