A groundwater remediation system based on physical sedimentation

Abstract

The application relates to the technical field of groundwater remediation, and discloses a groundwater remediation system based on physical sedimentation, which comprises a base, a pretreatment pool and a sedimentation pool are sequentially arranged on the top of the base from left to right, a treatment tank is fixedly connected to the side of the sedimentation pool close to the pretreatment pool, the treatment tank is connected with the pretreatment pool and the sedimentation pool in communication through connecting pipes arranged on the outer side of the treatment tank, a feeding part for feeding flocculants is arranged in the treatment tank, the feeding part comprises a rotating shaft rotatably connected to the inside of the treatment tank, an installation seat is fixedly connected to the outer surface of the rotating shaft, and a feeding pipe is rotatably connected into the installation seat. The groundwater remediation system based on physical sedimentation can effectively solve the problems that, in the prior art, the feeding position of a traditional flocculant feeding device is relatively fixed, flocculants are prone to forming a local high-concentration area near the feeding port, flocculants are prone to gathering, and the flocculants are difficult to effectively diffuse.

Description

Technical Field

[0001] This invention relates to the field of groundwater remediation technology, and more specifically to a groundwater remediation system based on physical settlement. Background Technology

[0002] In the field of groundwater pollution remediation, physical sedimentation is widely used due to its simple operation and low cost. Its core principle is to add flocculants to the polluted groundwater, so that suspended pollutants and colloidal particles in the water will coagulate and be adsorbed under the action of flocculants, forming larger particles that are easy to settle. Then, solid-liquid separation is achieved through gravity sedimentation, thereby achieving the purpose of purifying water quality.

[0003] In practical applications, the degree of mixing between flocculant and contaminated groundwater directly affects the sedimentation effect and remediation efficiency. Traditional flocculant dosing devices have relatively fixed dosing positions, which can easily lead to local high-concentration areas of flocculant near the dosing port, resulting in flocculant aggregation. This makes it difficult for the flocculant to diffuse effectively. This problem of local aggregation and insufficient mixing not only reduces the overall efficiency of the flocculation reaction and causes incomplete flocculation and sedimentation of pollutants in local areas, but also leads to waste of reagents due to local excessive flocculant, increasing remediation costs. Summary of the Invention

[0004] To address the aforementioned shortcomings of existing technologies, this invention provides a groundwater remediation system based on physical sedimentation. This system effectively solves the problems in existing technologies, such as the relatively fixed dosing position of traditional flocculant dosing devices, the tendency for flocculants to form localized high-concentration areas near the dosing port, and the resulting flocculant aggregation, which hinders effective diffusion of the flocculant.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] This invention provides a groundwater remediation system based on physical settlement, comprising:

[0007] The base has a pretreatment tank and a sedimentation tank arranged sequentially from left to right on its top. A treatment tank is fixedly connected to the pretreatment tank near the sedimentation tank. The treatment tank is connected to the pretreatment tank and the sedimentation tank respectively through a connecting pipe set on its outside. The treatment tank is equipped with a feeding device for adding flocculant.

[0008] The feeding component includes a rotating shaft rotatably connected inside the processing tank, and a mounting base is fixedly connected to the outer surface of the rotating shaft. Two mounting bases are provided and symmetrically distributed along the center of the rotating shaft. A feeding pipe is rotatably connected inside the mounting base, and multiple feeding pipes are provided and distributed in a circumferential array along the center of the rotating shaft. A drive unit for driving the rotating shaft to rotate is provided on the outside of the processing tank.

[0009] Furthermore, the drive unit includes a drive motor fixedly connected to the outside of the processing tank, and the output end of the drive motor is fixedly connected to a drive gear, and the driven gear meshing with the drive gear is fixedly connected to the side of the rotating shaft near the drive motor.

[0010] Furthermore, a filter plate is fixedly connected inside the pretreatment tank, and the filter plate is designed to be inclined. The outer surface of the connecting pipe is provided with a conveyor unit for conveying groundwater.

[0011] Furthermore, the outer surface of the feeding pipe is fixedly connected to a branch pipe, and the branch pipe has multiple sets arranged in an array along the center of the feeding pipe. The outer surface of the branch pipe has through holes, and the through holes have multiple sets arranged in a circular array along the center of the branch pipe.

[0012] Furthermore, a guide frame is fixedly connected to the outer surface of the feeding pipe, and the guide frame corresponds one-to-one with the branch pipe. A plunger that fits against the inner wall of the branch pipe is slidably connected inside the guide frame, and the plunger is connected to the guide frame through a return spring located on its outer side.

[0013] Furthermore, the rotating shaft has a flow channel inside, which is connected to the external flocculant storage device. The mounting base near the drive unit has a flow channel connected to the flow channel, and the flow channel is connected to the feeding pipe through a conveying pipe located on its outside.

[0014] Furthermore, a transmission gear is fixedly connected to the outer surface of the feeding pipe, and a gear ring that meshes with the transmission gear is fixedly connected to the inner wall of the processing tank.

[0015] The technical solution provided by this invention has the following advantages compared with the prior art:

[0016] This invention is equipped with a feeding component. The rotating shaft rotates under the drive unit, causing the feeding pipe to make a circular motion along the inner wall of the treatment tank. At the same time, the transmission gear on the outer surface of the feeding pipe meshes with the gear ring on the inner wall of the treatment tank, driving the feeding pipe to rotate at high speed around its own axis. With the superposition of the two motions, when the flocculant is released through the branch pipe through hole, it diffuses in a parabolic trajectory under the action of centrifugal force, significantly expanding the coverage area and effectively solving the problems of excessively high local concentration and agent aggregation in the traditional fixed dosing method. Multiple sets of feeding pipes are arranged in a circular array along the rotating shaft. Combined with intermittent dosing logic, this can achieve full coverage of the water in the treatment tank, ensuring that the flocculant and groundwater are in full contact, improving the overall efficiency of the flocculation reaction. When the feeding pipe rotates with the rotating shaft to the gear ring area, the transmission gear meshes with the gear ring to drive the feeding pipe to rotate at high speed. The plunger is displaced by centrifugal force to overcome the elastic force of the reset spring, and the through hole opens to release the flocculant. After disengaging from the gear ring, the plunger closes the through hole under the reset action of the spring, preventing water backflow and avoiding water from entering the feeding pipe during non-dosing stages, which could lead to premature flocculant reaction and pipeline blockage. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0018] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the three-dimensional separation structure according to an embodiment of the present invention;

[0020] Figure 3 This is a cross-sectional view of the processing tank according to an embodiment of the present invention;

[0021] Figure 4 This is an embodiment of the present invention. Figure 3 A magnified structural diagram of part A in the middle;

[0022] Figure 5 This is a cross-sectional view of the rotating shaft and mounting base according to an embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the three-dimensional separation structure of the plunger and branch pipe in an embodiment of the present invention.

[0024] The labels in the diagram represent: 1. Base; 11. Pretreatment tank; 12. Sedimentation tank; 13. Treatment tank; 131. Gear ring; 14. Connecting pipe; 15. Filter plate; 2. Feeding component; 21. Rotating shaft; 211. Guide channel; 22. Mounting base; 221. Flow channel; 23. Feeding pipe; 231. Branch pipe; 232. Through hole; 233. Guide frame; 234. Plunger; 235. Transmission gear; 3. Drive unit; 31. Drive motor; 32. Driving gear; 33. Driven gear. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0026] The present invention will be further described below with reference to embodiments.

[0027] Example:

[0028] Please see Figures 1-6 This invention provides a technical solution: a groundwater remediation system based on physical settlement, comprising:

[0029] The base 1 has a pretreatment tank 11 and a sedimentation tank 12 arranged from left to right on the top of the base 1. A treatment tank 13 is fixedly connected to the side of the pretreatment tank 11 near the sedimentation tank 12. The treatment tank 13 is connected to the pretreatment tank 11 and the sedimentation tank 12 respectively through a connecting pipe 14 set on its outside. The treatment tank 13 is equipped with a feeding device 2 for adding flocculant.

[0030] The feeding component 2 includes a rotating shaft 21 rotatably connected inside the processing tank 13, and a mounting base 22 is fixedly connected to the outer surface of the rotating shaft 21. There are two mounting bases 22 symmetrically distributed along the center of the rotating shaft 21. A feeding pipe 23 is rotatably connected inside the mounting base 22. There are multiple feeding pipes 23 distributed in a circumferential array along the center of the rotating shaft 21. A drive unit 3 for driving the rotating shaft 21 to rotate is provided on the outside of the processing tank 13.

[0031] The drive unit 3 includes a drive motor 31 fixedly connected to the outside of the processing tank 13, and the output end of the drive motor 31 is fixedly connected to a drive gear 32. The driven gear 33 that meshes with the drive gear 32 is fixedly connected to the side of the rotating shaft 21 near the drive motor 31.

[0032] The pretreatment tank 11 is fixedly connected to a filter plate 15, which is designed to be inclined. The outer surface of the connecting pipe 14 is provided with a conveyor unit for conveying groundwater.

[0033] The outer surface of the feeding pipe 23 is fixedly connected to a branch pipe 231, and the branch pipe 231 is provided with multiple sets and arranged in an array along the center of the feeding pipe 23. The outer surface of the branch pipe 231 is provided with through holes 232, and the through holes 232 are provided with multiple sets and arranged in a circular array along the center of the branch pipe 231.

[0034] A guide frame 233 is fixedly connected to the outer surface of the feeding pipe 23, and the guide frame 233 corresponds one-to-one with the branch pipe 231. A plunger 234 that is in contact with the inner wall of the branch pipe 231 is slidably connected inside the guide frame 233, and the plunger 234 is connected to the guide frame 233 through a return spring provided on its outer side.

[0035] The rotating shaft 21 has a flow channel 211 inside, and the flow channel 211 is connected to the external flocculant storage device. The mounting base 22 near the drive unit 3 has a flow channel 221 inside, which is connected to the flow channel 211. The flow channel 221 is connected to the feeding pipe 23 through a conveying pipe located on its outside.

[0036] A transmission gear 235 is fixedly connected to the outer surface of the feeding pipe 23, and a gear ring 131 that meshes with the transmission gear 235 is fixedly connected to the inner wall of the processing tank 13.

[0037] The principle and advantages of this groundwater remediation system based on physical settlement:

[0038] In actual operation, operators use external conveying equipment to transport the groundwater to be treated to the pretreatment tank 11. After entering the pretreatment tank 11, the water first comes into contact with the filter plate 15, and the physical interception effect removes large suspended impurities (such as branches, plastic fragments, etc.) from the water to prevent clogging of subsequent equipment and ensure the stable operation of the sedimentation system.

[0039] During this process, large suspended impurities trapped by the filter plate 15 accumulate at the upper part of the filter plate, and the filtered water is temporarily stored in the lower area of ​​the pretreatment tank 11, achieving preliminary separation of water and impurities. Simultaneously, because the filter plate 15 is inclined, large particles of impurities accumulated on the surface of the filter plate 15 migrate directionally to the bottom of the filter plate 15 under their own gravity. When the impurities at the bottom of the filter plate 15 reach a certain accumulation, the operator can clean it, reducing the frequency of manual intervention. The synergistic effect of the pretreatment tank 11 and the treatment tank 13 reduces the impurity load on the water entering the treatment tank 13 and provides a cleaner reaction environment for the subsequent flocculation reaction.

[0040] After large particulate impurities are filtered out, the external conveyor unit of the connecting pipe 14 pumps the groundwater in the pretreatment tank 11 to the treatment tank 13. When the liquid level in the treatment tank 13 reaches the preset liquid level value, the conveyor unit stops supplying water to the treatment tank 13. At this time, the external flocculant storage device delivers the flocculant solution that meets the treatment requirements to the guide channel 211 built into the rotating shaft 21. Since the guide channel 211 is connected to the flow channel 221 built into the mounting base 22, and the flow channel 221 is connected to the feeding pipe 23 through the conveying pipe, the flocculant solution can smoothly enter the feeding pipe 23.

[0041] During this process, the drive motor 31 of the drive unit 3 drives the drive gear 32 at its output end to rotate at a constant speed. Because the drive gear 32 meshes with the driven gear 33 at the end of the rotating shaft 21, the rotating shaft 21, together with the mounting base 22, can drive the feeding pipe 23 to rotate synchronously and at a constant speed within the treatment tank 13. Simultaneously, the conveying pipe and the feeding pipe 23 are connected by a rotary joint, ensuring continuous delivery of the agent during the rotation of the feeding pipe 23 while preventing leakage or pressure loss. The closed design isolates the agent from external contaminants, while the stable channel structure ensures uniform agent delivery pressure, solving the problems of easy contamination and delivery interruption in traditional open-type dosing systems.

[0042] As the shaft 21 continues to rotate, when one of the feeding pipes 23 rotates to the area of ​​the gear ring 131 on the inner wall of the treatment tank 13, the transmission gear 235 on the feeding pipe 23 meshes with the gear ring 131, thereby driving the feeding pipe 23 to rotate around its own axis. Based on the transmission ratio design of the gear ring 131 and the transmission gear 235, when they mesh, the transmission gear 235 can drive the feeding pipe 23 to achieve high-speed rotation. During the high-speed rotation of the feeding pipe 23, the plunger 234 is subjected to centrifugal force, which can overcome the elastic force threshold of the return spring, causing the plunger 234 to displace along the guide frame 233 in a direction away from the branch pipe 231, while the return spring is compressed. As the plunger 234 displaces, it gradually misaligns with the through hole 232 on the surface of the branch pipe 231, and the through hole 232 opens, allowing the flocculant in the feeding pipe 23 to be released into the treatment tank 13.

[0043] During this process, the feed pipe 23 is rotating at high speed. Combined with centrifugal force, the flocculant, after being released from the feed pipe 23, moves in a parabolic trajectory, effectively increasing its coverage area within the treatment tank 13 and achieving full coverage of the water within the tank. Furthermore, the branch pipes 231 on the outer surface of the feed pipe 23 are arranged in an array, with through-holes 232 on the surface of the branch pipes 231 arranged in a circumferential array. This structure allows the flocculant to diffuse into three-dimensional space through the through-holes 232 at different angles when released from the feed pipe 23, avoiding local concentration deviations caused by unidirectional release. Combined with the "revolution + rotation" motion of the feed pipe 23, the multi-directional through-holes 232 can diffuse the flocculant to different heights and radial positions within the treatment tank 13, forming a three-dimensional distribution. Compared to traditional single-hole or unidirectional release structures, this multi-directional release design further improves the microscopic mixing efficiency of the flocculant and water, ensuring that every part of the water can come into contact with an effective concentration of flocculant.

[0044] Multiple sets of feeding pipes 23 are provided. Whenever a feeding pipe 23 rotates to the position of the gear ring 131, the corresponding transmission gear 235 on the feeding pipe 23 will contact the gear ring 131, thereby realizing the intermittent feeding of flocculant. Two mounting seats 22 are symmetrically distributed along the center of the rotating shaft 21, and multiple feeding pipes 23 are arranged in a circular array along the circumference of the rotating shaft 21. This symmetrical structure ensures that the rotating shaft 21 is subjected to uniform force in all directions when it rotates, which can counteract the centrifugal force generated by the movement of the feeding pipes 23 and reduce the bending deformation and vibration of the rotating shaft 21.

[0045] The flocculant is evenly added to the treatment tank 13 and thoroughly mixed with the groundwater, allowing suspended pollutants and colloidal particles in the water to fully coagulate under the action of the flocculant, forming larger and more stable flocs. After the pretreatment stage removes coarse impurities, the impurities in the water within the treatment tank 13 are more uniform, further improving the sufficiency of the flocculation reaction. Larger flocs, upon entering the sedimentation tank 12, settle faster due to gravity, resulting in more thorough solid-liquid separation. This solves the problem of small flocs and slow settling caused by insufficient mixing in traditional methods, significantly improving subsequent settling efficiency.

[0046] It is worth noting that the water level in the treatment tank 13 will not reach the position of the gear ring 131, meaning that a certain space is reserved below the gear ring 131 for flocculant addition. Furthermore, the gear ring 131 is a non-complete structure; it only needs to enable the feeding pipe 23 to rotate at high speed in the feeding area to complete the flocculant addition. Meanwhile, the plunger 234 is made of high-density material, meaning it has a large mass. When the feeding pipe 23 rotates at high speed, its own mass, combined with the plunger's mass, generates a large centrifugal force. When the drive unit 3 drives the rotating shaft 21 to rotate at a constant speed, its rotational speed is much lower than the rotational speed of the feeding pipe 23 when it meshes with the gear ring 131 via the transmission gear 235. Therefore, when the transmission gear 235 is not in contact with the gear ring 131, the centrifugal force generated by the rotation of the rotating shaft 21 is insufficient to overcome the elastic force threshold of the return spring, meaning the plunger 234 will not move.

[0047] Because the flocculant reacts with microorganisms, minerals, and other impurities in the water within treatment tank 13, when the feed pipe 23 comes into contact with the water, the water will seep into the feed pipe 23 and mix with the flocculant. Impurities in the water will react prematurely with the flocculant to form flocs, causing blockages in the branch pipe 231, through-hole 232, and the internal channels of the feed pipe 23. Furthermore, the water and flocculant will form a gas-liquid mixture or a solid-liquid mixture within the feed pipe 23, leading to unstable internal pressure, interrupting flocculant dosing, and even requiring shutdown for disassembly and cleaning, thus affecting the continuous operation of the equipment.

[0048] When the transmission gear 235 disengages from the gear ring 131, the feeding pipe 23 stops rotating. At this time, the centrifugal force on the plunger 234 decreases linearly until the centrifugal force is insufficient to overcome the elastic force threshold of the return spring. The elastic potential energy accumulated during the compression of the return spring will cause the plunger 234 to return to its original position along the guide frame 233. When the plunger 234 returns to its initial position, the through hole 232 on the surface of the branch pipe 231 is blocked again, so that the feeding pipe 23 is in a "closed" state. The flocculant inside it is no longer released, and the external water cannot enter the feeding pipe 23 through the through hole 232 on the branch pipe 231 to trigger an early reaction, thus ensuring the normal feeding of the flocculant.

[0049] After the water in the flocculation treatment tank 13 completes the flocculation reaction, it is transported to the sedimentation tank 12 through a connecting pipe. The pre-treated water enters the sedimentation tank 12 at a constant flow rate, allowing the flocs formed during the reaction to settle and separate. A turbidity meter is used to monitor the turbidity of the effluent online. Water that meets the standards is then reinjected into the aquifer to replenish the groundwater level, thereby reducing ecological disturbance.

[0050] The present invention uses feeding component 2, which has the following advantages:

[0051] Firstly, the rotating shaft 21, driven by the drive unit 3, rotates, causing the feeding pipe 23 to move in a circular motion along the inner wall of the treatment tank 13. Simultaneously, the transmission gear 235 on the outer surface of the feeding pipe 23 meshes with the gear ring 131 on the inner wall of the treatment tank 13, driving the feeding pipe 23 to rotate at high speed around its own axis. With this dual motion superimposed, the flocculant, when released through the through-hole 232 of the branch pipe 231, diffuses in a parabolic trajectory under the action of centrifugal force, significantly expanding the coverage area and effectively solving the problems of excessively high local concentrations and agent aggregation in traditional fixed dosing methods. Multiple sets of feeding pipes 23 are arranged in a circular array along the rotating shaft 21. Combined with intermittent dosing logic, this achieves full coverage of the water body within the treatment tank 13, ensuring sufficient contact between the flocculant and groundwater, and improving the overall efficiency of the flocculation reaction.

[0052] Secondly, the guide frame 233, plunger 234, and return spring outside the feeding pipe 23 constitute an intermittent control structure. When the feeding pipe 23 rotates with the rotating shaft 21 to the area of ​​the gear ring 131, the transmission gear 235 meshes with the gear ring 131 to drive the feeding pipe 23 to rotate at high speed. The plunger 234 is displaced by centrifugal force to overcome the elastic force of the return spring, and the through hole 232 opens to release flocculant. After disengaging from the gear ring 131, the plunger 234 closes the through hole 232 under the action of the spring return, preventing water backflow. This mechanism realizes intermittent flocculant addition, avoiding water from entering the feeding pipe 23 during non-addition stages, which would cause premature flocculant reaction and pipeline blockage. At the same time, it reduces the contact between the agent and ineffective water, reducing the ineffective consumption of the agent.

[0053] Thirdly, when the feeding pipe 23 rotates in a circular motion with the rotating shaft 21, its overall structure continuously agitates the water in the treatment tank 13, which can effectively break the static stratification and local stagnant areas of the water and enhance the degree of water turbulence. Under turbulent conditions, the movement trajectory of water particles is irregular, which can significantly increase the collision probability and mass transfer efficiency between pollutant particles and flocculant molecules. The high-speed rotation of the feeding pipe 23 also uses centrifugal force to project the flocculant to a wider range. The combination of the two can greatly expand the effective contact area between the agent and the water, avoiding the problem of insufficient local mixing caused by poor water flow in traditional static dosing.

[0054] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A groundwater remediation system based on physical settlement, characterized in that, include: The base (1) has a pretreatment tank (11) and a sedimentation tank (12) arranged from left to right on the top of the base (1). The pretreatment tank (11) is fixedly connected to a treatment tank (13) on the side near the sedimentation tank (12). The treatment tank (13) is connected to the pretreatment tank (11) and the sedimentation tank (12) respectively through a connecting pipe (14) set on its outside. The treatment tank (13) is provided with a feeding device (2) for adding flocculant. The feeding component (2) includes a rotating shaft (21) rotatably connected inside the processing tank (13), and a mounting base (22) is fixedly connected to the outer surface of the rotating shaft (21). The mounting base (22) has two units symmetrically distributed along the center of the rotating shaft (21). A feeding pipe (23) is rotatably connected inside the mounting base (22), and multiple feeding pipes (23) are arranged in a circular array along the center of the rotating shaft (21). A drive unit (3) for driving the rotating shaft (21) to rotate is provided on the outside of the processing tank (13). The rotating shaft (21) has a flow channel (211) inside, and the flow channel (211) is connected to the external flocculant storage device. The mounting base (22) near the drive unit (3) has a flow channel (221) inside, which is connected to the flow channel (211). The flow channel (221) is connected to the feeding pipe (23) through a conveying pipe on its outside. The outer surface of the feeding pipe (23) is fixedly connected to a branch pipe (231), and the outer surface of the branch pipe (231) has a through hole (232). The outer surface of the feeding pipe (23) is fixedly connected to a transmission gear (235), and the inner wall of the processing tank (13) is fixedly connected to a gear ring (131) that meshes with the transmission gear (235). The outer surface of the feeding pipe (23) is fixedly connected to a guide frame (233), and the guide frame (233) corresponds one-to-one with the branch pipe (231). The guide frame (233) is slidably connected to a plunger (234) that fits against the inner wall of the branch pipe (231), and the plunger (234) is connected to the guide frame (233) through a return spring provided on its outer side. The water level in the treatment tank (13) will not reach the position of the toothed ring (131). A certain space is reserved below the toothed ring (131) for the flocculant to be added. The toothed ring (131) is not a complete structure. Only the feeding pipe (23) needs to be rotated at high speed in the feeding area to complete the flocculant addition.

2. The groundwater remediation system based on physical settlement according to claim 1, characterized in that: The drive unit (3) includes a drive motor (31) fixedly connected to the outside of the processing tank (13), and the output end of the drive motor (31) is fixedly connected to a drive gear (32). The shaft (21) is fixedly connected to a driven gear (33) that meshes with the drive gear (32) on the side near the drive motor (31).

3. The groundwater remediation system based on physical settlement according to claim 1, characterized in that: The pretreatment tank (11) is fixedly connected to a filter plate (15), and the filter plate (15) is designed to be inclined. The outer surface of the connecting pipe (14) is provided with a conveyor unit for conveying groundwater.

4. The groundwater remediation system based on physical settlement according to claim 1, characterized in that: The branch pipe (231) has multiple sets and is arranged in an array along the center of the feeding pipe (23), and the through hole (232) has multiple sets and is arranged in a circumferential array along the center of the branch pipe (231).

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