In-situ treatment system and method for river sediment pollution with automatic cleaning function

Abstract

The present application relates to the technical field of river sediment pollution remediation, in particular to a river sediment pollution in-situ treatment system with automatic cleaning function and a method thereof, which sets the aeration and bacteria liquid spraying pipeline in the lower end of the treatment cylinder, so that the bacteria liquid can be directly added to the contaminated sediment, reducing unnecessary waste of bacteria liquid and lowering the cost; the outer wall of the treatment cylinder can be directly flushed during hoisting after treatment, which increases the practical performance; and the problems of water quality pollution aggravation and suspended particulate matter increasing water turbidity caused by aeration are effectively solved through the way of suction filtration.

Description

Technical Field

[0001] This invention relates to the field of riverbed sediment pollution remediation technology, specifically to an in-situ treatment system and method for riverbed sediment pollution with automatic cleaning function. Background Technology

[0002] With rapid economic and social development and rising living standards, pollutant levels are also increasing. Before the implementation of interception and collection systems, most pollutants accumulate in rivers, leading to water pollution. After effective control of external pollutants, internal pollution from sediment has become a significant source of water pollution. For example, some lake sediments contain over 90% of the lake's pollutants. A study by Yang Pan et al. on the pollution characteristics of sediment at the mouth of the Nanfei River in Chaohu Lake found that most river estuaries and confluence basins exhibited varying degrees of pollution in total nitrogen (TN), total phosphorus (TP), organic matter (OM), and heavy metals, primarily concentrated in the 0–30 cm sediment layer. The levels tend to decrease with increasing sediment depth. Therefore, removing pollutants from shallow sediments is a key challenge in controlling internal pollution in rivers.

[0003] Aeration is a common technology for river water pollution control. However, most existing technologies involve aeration in the water body or directly in the bottom sediment. Aeration in the water body has a relatively small effect on the treatment and remediation of endogenous pollution in the bottom sediment. Direct aeration in the bottom sediment can easily disturb the sediment, releasing pollutants from the sediment into the water body, causing a short-term aggravation of water pollution. Suspended particulate matter rises, increasing the turbidity of the water body, which is not conducive to the assessment of monitoring sections. Adding microbial agents directly to the water body is expensive, and due to the water flow velocity, the microbial agents are easily washed away with the water flow. The time for microbial degradation of pollutants is slow and requires a short residence time. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an in-situ treatment system and method for riverbed sediment pollution with automatic cleaning function. This system solves the problems of limited effectiveness of aeration in treating and remediating endogenous pollution in sediment, the tendency for direct aeration to disturb the sediment and release pollutants into the water, leading to short-term aggravation of water pollution, increased turbidity due to suspended particulate matter rising, and difficulties in monitoring cross-sections. Adding microbial agents directly to the water is also costly, and due to water flow velocity, these agents are easily lost with the flow, resulting in slow microbial degradation of pollutants and requiring short-term retention.

[0005] To address the aforementioned technical problems, this invention provides an in-situ treatment system for riverbed sediment pollution with an automatic cleaning function. The system includes a support frame assembly fixed to the hull, a winding mechanism, and a pollution treatment unit. The support frame assembly consists of a lower support plate, support legs, columns, and an upper support plate. The lower support plate is further composed of a first support plate, a second support plate, and a third support plate connected sequentially from left to right. Support legs are provided at the bottom of each of the first, second, and third support plates, and all are fixed to the hull via these legs. The upper support plate is fixed to the second support plate via columns. Above the support plate, the right end of the third support plate extends out of the hull. The winding mechanism is further divided into a rope winding mechanism and a hose winding mechanism. The rope winding mechanism is installed on the upper support plate, and the hose winding mechanism is installed on the second support plate. The pollution treatment unit includes an upper connecting plate, an aeration and bacterial liquid spraying pipe, a telescopic pipe assembly, a treatment cylinder, and a conveying pipe. The upper end of the treatment cylinder is sealed, and the lower end is open. Four conveying pipes are evenly arranged inside the treatment cylinder, and the upper end of each conveying pipe is fixedly connected to the top wall of the treatment cylinder. The aeration and bacterial liquid spraying pipes are installed inside the lower end of the treatment cylinder and are detachably connected to four conveying pipes. Four telescopic pipe assemblies are located at the top of the treatment cylinder relative to the four conveying pipes. The treatment cylinder is connected to an upper connecting plate via these telescopic pipe assemblies, which are connected to the conveying pipes directly below them. A hose connector is located at the top of the upper connecting plate, and a flow guiding channel is formed within the upper connecting plate. The hose connector is connected to the four telescopic pipe assemblies via the flow guiding channel, and the hose connector is also connected to a hose winding mechanism via a hose. The rope winding mechanism winds up and unwinds the rope by rotation. The rope passes through the upper connecting plate and connects to the lifting ring at the top of the processing cylinder. A guide hole for the rope to pass through is provided at the center of the upper connecting plate. The processing cylinder passes through the third support plate under the drive of the rope. A through groove for the processing cylinder to pass through is provided on the end of the third support plate that extends out of the hull. An auxiliary limiting mechanism and a flushing mechanism are also sequentially suspended at the bottom of the third support plate that extends out of the hull. The through groove is located directly above the auxiliary limiting mechanism and the flushing mechanism. The processing cylinder passes through the auxiliary limiting mechanism and the flushing mechanism sequentially under the drive of the rope.

[0006] Further: The auxiliary limiting mechanism includes a limiting plate, a guide frame, a servo motor, a drive gear, and a suspension seat. Two guide frames are provided, arranged opposite each other. A suspension seat is fixed to each of the two guide frames on opposite sides. The suspension seats are connected to the bottom of the third support plate via a first hanger. A guide groove matching the limiting plate is provided on the opposite side of the two guide frames. The left and right ends of the limiting plate are rotatably connected to the guide grooves of the two guide frames. A toothed structure matching the drive gear is provided on the outer wall of the limiting plate. The servo motor is mounted on one of the suspension seats. The drive gear is mounted on the output shaft of the servo motor. A notch for the drive gear to extend into the guide groove is provided on the guide frame connected to the servo motor. The drive gear extends into the guide groove along the notch and meshes with the toothed structure. Several protrusions are evenly distributed on the outer wall of the processing cylinder. A guide groove for the protrusions to pass through is provided on the inner wall of the limiting plate. A placement groove for the protrusions is provided on the inner wall of the limiting plate between two adjacent guide grooves.

[0007] Furthermore: the flushing mechanism includes an annular flushing pipe, a lifting clamp, and a second lifting rod. The bottom of each of the two suspension seats is connected to a lifting clamp via the second lifting rod. The annular flushing pipe is fixed by the two lifting clamps. Several flushing holes are evenly opened on the inner wall of the annular flushing pipe. The annular flushing pipe is connected to a water pump fixed on the third support plate via a delivery hose. The water pump is also connected to the water pumping pipe. A filter is installed at the end of the water pump away from the water pump.

[0008] Furthermore: a filter plate is installed inside the lower end of the treatment cylinder, and the aeration and bacterial liquid spraying pipe is located directly below the filter plate. A lower connecting seat integrally connected to the filter plate is installed on the inner wall of the treatment cylinder. The filter plate is detachably connected to the lower connecting seat by bolts. Several filter holes are evenly opened on the filter plate. The lower end of the conveying pipe passes through the filter plate and is detachably connected to the aeration and bacterial liquid spraying pipe through a flange assembly. A second through hole is opened on the filter plate for the conveying pipe and the flange assembly to pass through. A liquid pump is also fixed on the filter plate. The liquid pump is connected to the liquid pumping pipe and the liquid delivery pipe. The end of the liquid pumping pipe away from the liquid pump passes through the filter plate and extends directly below it. The end of the liquid delivery pipe away from the liquid pump is located directly above the filter plate.

[0009] Furthermore: the telescopic pipe assembly includes a first conduit, a second conduit, a first sealing end cap, a sealing plug, and a second sealing end cap. The upper end of the first conduit is fixedly connected to the upper connecting plate and communicates with the flow channel. The lower end of the second conduit is fixed to the top of the processing cylinder and communicates with the conveying pipe. The first sealing end cap is fixed to the upper end of the second conduit. The sealing plug is fixedly connected to the first sealing end cap and extends into the second conduit. The lower end of the first conduit passes through the first sealing end cap and the sealing plug in sequence and extends into the second conduit. A second sealing end cap is installed on one end of the first conduit that extends into the second conduit. The lower end that extends into the first conduit is restricted within the second conduit by the second sealing end cap. A flow guide hole is provided on the side wall of the lower end of the first conduit. The flow guide hole is sealed by the sealing plug. A transmission block is fixed on the rope below the upper connecting plate. During the lifting and lowering of the pollution treatment unit, the transmission block contacts the bottom of the upper connecting plate.

[0010] Furthermore: the rope winding mechanism includes a rope, a rope winding mounting frame, a first guide wheel, a winding shaft, and a winding motor. The rope winding mounting frame is fixed to the top of the upper support plate. The winding shaft is horizontally rotatably connected inside the rope winding mounting frame. The winding motor is fixed inside the rope winding mounting frame and connected to the winding shaft via a first drive shaft. One end of the rope is connected to the winding shaft and is wound up and down by rotating the winding shaft. The first guide wheel is located directly above the third support plate and is connected to the rope winding mounting frame via a support arm. The other end of the rope passes around the first guide wheel and through the upper connecting plate to connect to the lifting ring.

[0011] Furthermore: the hose winding mechanism includes a hose winding mounting frame, a hose winding shaft, a second guide wheel, a rotary sealing joint, and a hose. The hose winding mounting frame is fixed to the second support plate. The hose winding shaft is horizontally arranged and parallel to the winding shaft. One end of the hose winding shaft is rotatably connected to the inner wall of one side of the hose winding mounting frame via the rotary sealing joint. The other end of the hose winding shaft is connected to the inner wall of the other side of the hose winding mounting frame via the second drive shaft. The hose winding shaft is a hollow shaft. One end of the hose is connected to and communicates with the hose winding shaft. The hose is wound by the rotation of the hose winding shaft. The second guide wheel fixing bracket is fixed to the bottom of the upper support plate. The other end of the hose passes around the second guide wheel and is connected to the hose connector. The rotary sealing connector is also connected to the aeration conveying pipe and the bacterial liquid conveying pipe. Both the aeration conveying pipe and the bacterial liquid conveying pipe are connected to the hose winding shaft through the rotary sealing connector. The end of the aeration conveying pipe away from the rotary sealing connector is connected to the air compressor pump fixed to the top of the third support plate. The end of the bacterial liquid conveying pipe away from the rotary sealing connector is connected to the bacterial liquid storage tank through the bacterial liquid conveying pump. The bacterial liquid conveying pump is equipped with a flow meter. The bacterial liquid storage tank is set on the first support plate.

[0012] Furthermore: a first gear and a fourth gear are installed on the first drive shaft, a second gear is installed on the output shaft of the rope winding motor, the first gear and the second gear are meshed with each other, a third gear is installed on the second drive shaft, the third gear is connected to the fourth gear through a transmission belt, a second through groove is provided on the upper support plate for the transmission belt to pass through, and the rope and the hose are wound and unwound synchronously.

[0013] The present invention also provides an in-situ treatment method for riverbed sediment pollution, which includes the following steps:

[0014] S1: Start the winding mechanism to lower the pollution treatment unit under its own weight, so that the lower end of the treatment cylinder is inserted into the riverbed sediment;

[0015] S2: Start the air compressor pump to aerate the riverbed sediment using the aeration and bacterial liquid spraying pipes, disturb the sediment, and fully release the pollutants in the sediment into the water.

[0016] S3: Start the pump to filter the river water and bottom sediment inside the treatment cylinder for 1-2 minutes.

[0017] S4: After the filtration is completed in step S3, start the bacterial liquid delivery pump, add bacterial liquid through the aeration and bacterial liquid spraying pipe, and accurately control the amount added through the flow meter;

[0018] S5: After step S4 is completed, the rewinding mechanism is started in reverse to lift the contamination treatment unit. During the lifting process, the outer wall of the treatment cylinder is automatically washed by the rinsing mechanism. After the protrusion on the treatment cylinder is higher than the limit plate, the servo motor is started, and then the rope is lowered to support the contamination treatment unit using the auxiliary limit mechanism.

[0019] Further: The bacterial solution in step S3 consists of 40-60% compound probiotic suspension, 35-45% modified soy protein isolate, and 12-18% food-grade excipients. The concentration of bacteria in the compound probiotic suspension is (10⁸-10⁹) CFU / ml. The compound probiotic suspension contains Lactobacillus rhamnosus LGG, Bifidobacterium lactis Bi07, Bifidobacterium longum BL21, Lactobacillus plantarum Lp90, and Lactobacillus acidophilus LA85.

[0020] The beneficial effects of the present invention after adopting the above structure are as follows:

[0021] 1. This invention places the aeration and bacterial liquid spraying pipes inside the lower end of the treatment cylinder, thereby allowing the bacterial liquid to be added directly to the contaminated bottom sludge, reducing unnecessary waste of the bacterial liquid and lowering costs; moreover, the outer wall of the treatment cylinder can be directly rinsed during the lifting process after treatment, which increases its practicality.

[0022] 2. The structure described above not only prevents unnecessary damage caused by the hull swaying during navigation or in large waves, but also prevents the rope from being under stress for a long time, thus extending the rope's service life.

[0023] 3. By adopting the above structure, the present invention effectively solves the problems of water pollution aggravated in a short time due to aeration and the increase of water turbidity due to the floating of suspended particulate matter through suction filtration.

[0024] 4. During the lifting process, the upper connecting plate will be stretched upward under the action of the transmission block, so that the sealing plug will automatically seal the guide hole, preventing the waste of bacterial liquid due to misoperation. Attached Figure Description

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0026] Figure 1 This is a schematic diagram of the structure of the present invention.

[0027] Figure 2 for Figure 1 A magnified view of A in the middle.

[0028] Figure 3 A top view of the auxiliary limiting mechanism.

[0029] Figure 4 This is a diagram of the internal structure of the pollution treatment department.

[0030] Figure 5 for Figure 4 A magnified view of B in the middle.

[0031] Figure 6 for Figure 4 A magnified view of C.

[0032] The attached diagram is labeled as follows: 1 is the first support plate, 2 is the second support plate, 3 is the third support plate, 4 is the bacterial culture storage tank, 5 is the upper support plate, 6 is the hose reel mounting frame, 7 is the rope reel mounting frame, 8 is the air compressor pump, 9 is the bacterial culture transfer pump, 10 is the transmission belt, 11 is the first guide wheel, 12 is the second guide wheel, 13 is the hose, 14 is the upper connecting plate, 14-1 is the flow guide channel, 15 is the first guide tube, 16 is the second guide tube, 17 is the guide frame, 18 is the limiting plate, 18-1 is the guide groove, and 18-2 is the release... 19 is the treatment cylinder, 20 is the suspension seat, 21 is the servo motor, 22 is the drive gear, 23 is the sealing plug, 24 is the tooth structure, 25 is the transmission block, 26 is the lifting ring, 27 is the conveying pipe, 28 is the filter plate, 28-1 is the filter hole, 28-2 is the second through hole, 29 is the protrusion, 30 is the liquid pump, 31 is the liquid pumping pipe, 32 is the aeration and bacterial liquid spraying pipe, 33 is the first sealing end cap, 34 is the second sealing end cap, 35 is the lower connecting seat, 36 is the water pump, 37 is the flushing pipe, and 38 is the rope. Detailed Implementation

[0033] like Figure 1 and Figure 4The system shown is an in-situ treatment system for riverbed sediment pollution with automatic cleaning function. It includes a support frame assembly fixed to the hull, a winding mechanism, and a pollution treatment unit. The support frame assembly consists of a lower support plate, support legs, columns, and an upper support plate 5. The lower support plate is composed of a first support plate 1, a second support plate 2, and a third support plate 3 connected sequentially from left to right. Support legs are provided at the bottom of the first support plate 1, the second support plate 2, and the third support plate 3, and they are all fixed to the hull by the support legs. The upper support plate 5 is fixed directly above the second support plate 2 by the columns. The right end of the third support plate 3 extends out of the hull. The winding mechanism is further divided into a rope winding mechanism and a hose winding mechanism. The rope winding mechanism is mounted on the upper support plate 5, and the hose winding mechanism is mounted on the second support plate 2. The pollution treatment unit includes an upper connecting plate 14, an aeration and bacterial liquid spraying pipe 32, a telescopic pipe assembly, a treatment cylinder 19, and a conveying pipe 27. The upper end of the treatment cylinder 19 is sealed, and the lower end of the treatment cylinder 19 is open. Four conveying pipes 27 are evenly arranged inside the treatment cylinder 19. The upper end of the conveying pipes 27 is fixedly connected to the top wall inside the treatment cylinder 19. The aeration and bacterial liquid spraying pipe 32 is located on the treatment cylinder 19. The lower end of the cylinder 19 is detachably connected to four conveying pipes 27. Four telescopic pipe assemblies are positioned at the top of the cylinder 19 relative to the four conveying pipes. The cylinder 19 is connected to the upper connecting plate 14 via these telescopic pipe assemblies, which communicate with the conveying pipes 27 directly below them. A hose connector is located at the top of the upper connecting plate 14. A flow guide channel 14-1 is formed within the upper connecting plate 14. The hose connector communicates with the four telescopic pipe assemblies through the flow guide channel 14-1. The hose connector is also connected to a hose winding mechanism via a hose 13. The rope winding mechanism... The rope 38 is wound up and down by rotation. The rope 38 passes through the upper connecting plate 14 and is connected to the lifting ring 26 at the top of the processing cylinder 19. The upper connecting plate 14 has a guide hole at its center for the rope 38 to pass through. The processing cylinder 19 passes through the third support plate 3 under the drive of the rope 38. The end of the third support plate 3 that extends out of the hull has a through groove for the processing cylinder 19 to pass through. The bottom of the third support plate 3 that extends out of the hull is also equipped with an auxiliary limiting mechanism and a flushing mechanism in sequence. The through groove is located directly above the auxiliary limiting mechanism and the flushing mechanism. The processing cylinder 19 passes through the auxiliary limiting mechanism and the flushing mechanism in sequence under the drive of the rope 38.During operation, the rope winding mechanism and hose winding mechanism are activated, and the lower end of the treatment cylinder is inserted into the riverbed sediment using the weight of the pollution treatment unit. Aeration and bacterial solution addition are carried out through the aeration and bacterial solution spraying pipes located at the lower end of the treatment cylinder. This invention places the aeration and bacterial solution spraying pipes inside the lower end of the treatment cylinder, thereby allowing direct addition of bacterial solution to the polluted sediment, reducing unnecessary waste of bacterial solution and lowering costs. Moreover, the outer wall of the treatment cylinder can be directly rinsed during the lifting process after treatment, which enhances its practicality.

[0034] like Figure 1 , Figure 2 , Figure 3 and Figure 4 The auxiliary limiting mechanism shown includes a limiting plate 18, a guide frame 17, a servo motor 21, a drive gear 22, and a suspension seat 20. Two guide frames 17 are provided, arranged facing each other. A suspension seat 20 is fixed to each of the two guide frames 17 on opposite sides. Each suspension seat 20 is connected to the bottom of the third support plate 3 via a first hanger. Guide grooves matching the limiting plate 18 are provided on the facing sides of the two guide frames 17. The left and right ends of the limiting plate 18 are rotatably connected to the guide grooves of the two guide frames 17. A tooth structure 24 matching the drive gear 22 is provided on the outer wall of the limiting plate 18. The servo motor 21 is mounted on a suspension base 20. The drive gear 22 is fixedly mounted on the output shaft of the servo motor 21. A notch is provided on the guide frame 17 connected to the servo motor 21 for the drive gear 22 to extend into. The drive gear 22 extends into the guide groove along the notch and meshes with the tooth structure 24. Several protrusions 29 are evenly distributed on the outer wall of the processing cylinder. A guide groove 18-1 is provided on the inner wall of the limiting plate 18 for the protrusions 29 to pass through. A placement groove 18-2 for placing the protrusions 29 is provided on the inner wall of the limiting plate 18 between two adjacent guide grooves. During the lifting process, when the protrusion is higher than the limiting plate, the limiting plate is rotated so that the protrusion is directly above the placement groove. The rope is then lowered so that the processing cylinder sits directly in the placement groove of the limiting plate through the protrusion, thereby supporting the contamination treatment unit. The structure described above not only prevents unnecessary damage caused by the hull swaying during navigation or in large waves, but also prevents the rope from being under stress for extended periods, thus extending the rope's service life.

[0035] like Figure 1The flushing mechanism shown includes an annular flushing pipe 37, a lifting clamp, and a second lifting rod. The bottom of each of the two suspension seats 20 is connected to a lifting clamp via the second lifting rod. The annular flushing pipe 37 is fixed by the two lifting clamps. Several flushing holes are evenly opened on the inner wall of the annular flushing pipe 37. The annular flushing pipe 37 is connected to a water pump 36 fixed on the third support plate 3 via a delivery hose. The water pump 36 is also connected to a water pumping pipe. A filter is installed at the end of the water pumping pipe away from the water pump 36.

[0036] like Figure 4 and Figure 6 A filter plate 28 is installed inside the lower end of the treatment cylinder 19 shown. The aeration and bacterial liquid spraying pipe 32 is located directly below the filter plate. A lower connecting seat 35 is installed on the inner wall of the treatment cylinder 19 and is integrated with it. The filter plate 28 is detachably connected to the lower connecting seat 35 by bolts. A plurality of filter holes 28-1 are evenly opened on the filter plate 28. The lower end of the conveying pipe 27 passes through the filter plate 28 and is detachably connected to the aeration and bacterial liquid spraying pipe 32 through a flange assembly. A second through hole 28-2 is opened on the filter plate 28 for the conveying pipe 27 and the flange assembly to pass through. A liquid pump 30 is also fixed on the filter plate. The liquid pump 30 is connected to the liquid extraction pipe 31 and the liquid delivery pipe. The end of the liquid extraction pipe 31 away from the liquid pump 30 passes through the filter plate 28 and extends directly below it. The end of the liquid delivery pipe away from the liquid pump 30 is located directly above the filter plate 28. The present invention, by adopting the above structure, effectively solves the problems of water pollution aggravated in a short time due to aeration and the increase of water turbidity due to the floating of suspended particulate matter by suction filtration.

[0037] like Figure 4 and Figure 5The telescopic pipe assembly shown includes a first conduit 15, a second conduit 16, a first sealing end cap 33, a sealing plug 23, and a second sealing end cap 34. The upper end of the first conduit 15 is fixedly connected to the upper connecting plate 14 and communicates with the guide channel 14-1. The lower end of the second conduit 16 is fixed to the top of the processing cylinder 19 and communicates with the conveying pipe 27. The first sealing end cap 33 is fixed to the upper end of the second conduit 16. The sealing plug 23 is fixedly connected to the first sealing end cap 33 and extends into the second conduit 16. The lower end of the first conduit 15 passes through the first sealing end cap 15, the second conduit 16, the first sealing end cap 33, the sealing plug 23, and the second sealing end cap 34 in sequence. A sealing end cap 33 and a sealing plug 23 extend into the second conduit 16. A second sealing end cap 34 is installed on one end of the first conduit 15 extending into the second conduit 16. The lower end of the first conduit 15 is confined within the second conduit 16 by the second sealing end cap 34. A flow guide hole 15-1 is provided on the side wall of the lower end of the first conduit 15. The flow guide hole 15-1 is sealed by the sealing plug 23. A transmission block 25 is fixed to the rope 38 below the upper connecting plate 14. During the lifting and lowering of the contamination treatment unit, the transmission block 25 contacts the bottom of the upper connecting plate 14. During the lifting process, the upper connecting plate is stretched upward by the action of the transmission block, so that the sealing plug automatically seals the flow guide hole, preventing waste of bacterial solution due to misoperation.

[0038] like Figure 1 The rope winding mechanism shown includes a rope 38, a rope winding mounting frame 7, a first guide wheel 11, a winding shaft, and a winding motor. The rope winding mounting frame 7 is fixed to the top of the upper support plate 5. The winding shaft is horizontally rotatably connected inside the rope winding mounting frame 7. The winding motor is fixed inside the rope winding mounting frame 7 and connected to the winding shaft via a first drive shaft. One end of the rope 38 is connected to the winding shaft and is wound up and unwound by rotating the winding shaft. The first guide wheel 11 is located directly above the third support plate 3 and is connected to the rope winding mounting frame 7 via a support arm. The other end of the rope 38 passes around the first guide wheel 11 and through the upper connecting plate 14 to connect to the lifting ring 26.

[0039] like Figure 1The hose winding mechanism shown includes a hose winding mounting frame 6, a hose winding shaft, a second guide wheel 12, a rotary sealing joint, and a hose 13. The hose winding mounting frame 6 is fixed on the second support plate 2. The hose winding shaft is horizontally arranged and parallel to the winding shaft. One end of the hose winding shaft is rotatably connected to the inner wall of one side of the hose winding mounting frame 6 through the rotary sealing joint, and the other end of the hose winding shaft is connected to the inner wall of the other side of the hose winding mounting frame 6 through the second drive shaft. The hose winding shaft is a hollow shaft. One end of the hose 13 is connected to and communicates with the hose winding shaft. The hose 13 is wound up and unwound by the rotation of the hose winding shaft. The second guide wheel 12 is fixed to the bottom of the upper support plate 5. The other end of the hose 13 passes around the second guide wheel 12 and is connected to the hose connector. The rotary sealing connector is also connected to the aeration conveying pipe and the bacterial liquid conveying pipe. The aeration conveying pipe and the bacterial liquid conveying pipe are both connected to the hose winding shaft through the rotary sealing connector. The end of the aeration conveying pipe away from the rotary sealing connector is connected to the air compressor pump 8 fixed on the top of the third support plate 3. The end of the bacterial liquid conveying pipe away from the rotary sealing connector is connected to the bacterial liquid storage tank 4 through the bacterial liquid conveying pump 9. A flow meter is installed on the bacterial liquid conveying pump 9. The bacterial liquid storage tank 4 is set on the first support plate 1.

[0040] like Figure 1 The first drive shaft shown is equipped with a first gear and a fourth gear. The output shaft of the rope winding motor is equipped with a second gear. The first gear and the second gear are meshed with each other. The second drive shaft is equipped with a third gear. The third gear is connected to the fourth gear through a transmission belt 10. The upper support plate is provided with a second through groove for the transmission belt 10 to pass through. The rope and the hose are wound and unwound synchronously.

[0041] The present invention also provides an in-situ treatment method for riverbed sediment pollution, which includes the following steps:

[0042] S1: Start the winding mechanism to lower the pollution treatment unit under its own weight, so that the lower end of the treatment cylinder is inserted into the riverbed sediment;

[0043] S2: Start the air compressor pump to aerate the riverbed sediment using the aeration and bacterial liquid spraying pipes, disturb the sediment, and fully release the pollutants in the sediment into the water.

[0044] S3: Start the pump to filter the river water and bottom sediment inside the treatment cylinder for 1-2 minutes.

[0045] S4: After the filtration is completed in step S3, start the bacterial liquid delivery pump, add bacterial liquid through the aeration and bacterial liquid spraying pipe, and accurately control the amount added through the flow meter;

[0046] S5: After step S4 is completed, the rewinding mechanism is started in reverse to lift the contamination treatment unit. During the lifting process, the outer wall of the treatment cylinder is automatically washed by the rinsing mechanism. After the protrusion on the treatment cylinder is higher than the limit plate, the servo motor is started, and then the rope is lowered to support the contamination treatment unit using the auxiliary limit mechanism.

[0047] The bacterial solution in step S3 above consists of 40-60% compound probiotic suspension, 35-45% modified soy protein isolate, and 12-18% food-grade excipients. The concentration of bacteria in the compound probiotic suspension is (10⁸-10⁹) CFU / ml. The compound probiotic suspension contains Lactobacillus rhamnosus LGG, Bifidobacterium lactis Bi07, Bifidobacterium longum BL21, Lactobacillus plantarum Lp90, and Lactobacillus acidophilus LA85.

[0048] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should be considered within the scope of protection of the present invention.

Claims

1. A riverbed sediment pollution in-situ treatment system with automatic cleaning function, comprising a support frame assembly fixed to the hull, a winding mechanism, and a pollution treatment unit, characterized in that: The support frame assembly consists of a lower support plate, support feet, columns, and an upper support plate (5). The lower support plate is composed of a first support plate (1), a second support plate (2), and a third support plate (3) connected from left to right. The bottom of the first support plate (1), the second support plate (2), and the third support plate (3) are all provided with support feet and are fixed to the hull by the support feet. The upper support plate (5) is fixed directly above the second support plate (2) by the columns. The right end of the third support plate (3) extends out of the hull. The winding mechanism is divided into a rope winding mechanism and a hose winding mechanism. The rope winding mechanism is located on the upper support plate (5). The hose reeling mechanism is mounted on the second support plate (2). The pollution treatment unit includes an upper connecting plate (14), an aeration and bacterial liquid spraying pipe (32), a telescopic pipe assembly, a treatment cylinder (19), and a conveying pipe (27). The upper end of the treatment cylinder (19) is sealed, and the lower end of the treatment cylinder (19) is open. Four conveying pipes (27) are evenly arranged inside the treatment cylinder (19). The upper end of the conveying pipes (27) is fixedly connected to the top wall inside the treatment cylinder (19). The aeration and bacterial liquid spraying pipe (32) is located inside the lower end of the treatment cylinder (19) and is detachably connected to the four conveying pipes (27). Four telescopic pipe assemblies are provided at the top of the processing cylinder (19) relative to the four conveying pipes. The processing cylinder (19) is connected to the upper connecting plate (14) through the telescopic pipe assemblies. The telescopic pipe assemblies are connected to the conveying pipe (27) directly below them. A hose connector is provided at the top of the upper connecting plate (14). A flow guide channel (14-1) is opened in the upper connecting plate (14). The hose connector is connected to the four telescopic pipe assemblies through the flow guide channel (14-1). The hose connector is also connected to the hose winding mechanism through the hose (13). The rope winding mechanism winds up and unwinds the rope (38) by rotation. The upper connecting plate (14) is connected to the lifting ring (26) at the top of the processing cylinder (19). The upper connecting plate (14) has a guide hole for the rope (38) to pass through. The processing cylinder (19) passes through the third support plate (3) under the drive of the rope (38). The third support plate (3) has a through groove for the processing cylinder (19) to pass through at one end of the hull. The bottom of the third support plate (3) extending out of the hull is also equipped with an auxiliary limiting mechanism and a flushing mechanism. The through groove is located directly above the auxiliary limiting mechanism and the flushing mechanism. The processing cylinder (19) passes through the auxiliary limiting mechanism and the flushing mechanism in sequence under the drive of the rope (38).

2. The in-situ treatment system for riverbed sediment pollution with automatic cleaning function according to claim 1, characterized in that: The auxiliary limiting mechanism includes a limiting plate (18), a guide frame (17), a servo motor (21), a drive gear (22), and a suspension seat (20). There are two guide frames (17), which are arranged opposite each other. Each of the two guide frames (17) has a suspension seat (20) fixed on one side away from each other. The suspension seat (20) is connected to the bottom of the third support plate (3) through a first hanger. The two guide frames (17) have a guide groove that matches the limiting plate (18) on the opposite side. The left and right ends of the limiting plate (18) are rotatably connected to the guide grooves of the two guide frames (17). The outer wall of the limiting plate (18) is provided with a tooth structure (24) that matches the drive gear (22). The servo motor (21) is mounted on a suspension seat (20), and the drive gear (22) is fixed on the output shaft of the servo motor (21). The guide frame (17) connected to the servo motor (21) also has a notch for the drive gear (22) to extend into. The drive gear (22) extends into the guide groove along the notch and meshes with the tooth structure (24). The outer wall of the processing cylinder is also uniformly provided with a number of protrusions (29) integrated with it. The inner wall of the limiting disk (18) is provided with a guide groove (18-1) for the protrusions (29) to pass through. The inner wall of the limiting disk (18) between two adjacent guide grooves is provided with a placement groove (18-2) for placing the protrusions (29).

3. The in-situ treatment system for riverbed sediment pollution with automatic cleaning function according to claim 2, characterized in that: The flushing mechanism includes an annular flushing pipe (37), a lifting clamp, and a second lifting rod. The bottom of each of the two suspension seats (20) is connected to a lifting clamp via the second lifting rod. The annular flushing pipe (37) is fixed by the two lifting clamps. Several flushing holes are evenly opened on the inner wall of the annular flushing pipe (37). The annular flushing pipe (37) is connected to a water pump (36) fixed on the third support plate (3) via a delivery hose. The water pump (36) is also connected to the water pumping pipe. A filter is installed at the end of the water pumping pipe away from the water pump (36).

4. The in-situ treatment system for riverbed sediment pollution with automatic cleaning function according to claim 1, characterized in that: A filter plate (28) is installed inside the lower end of the treatment cylinder (19). The aeration and bacterial liquid spraying pipe (32) is located directly below the filter plate. A lower connecting seat (35) is installed on the inner wall of the treatment cylinder (19) and is integrated with it. The filter plate (28) is detachably connected to the lower connecting seat (35) by bolts. Several filter holes (28-1) are evenly opened on the filter plate (28). The lower end of the conveying pipe (27) passes through the filter plate (28) and is connected to the aeration and bacterial liquid spraying pipe (32) through a flange assembly. The gas and bacterial liquid spraying pipe (32) is detachably connected. The filter plate (28) is provided with a second through hole (28-2) for the conveying pipe (27) and flange assembly to pass through. The filter plate is also fixed with a liquid pump (30). The liquid pump (30) is connected to the liquid pumping pipe (31) and the liquid delivery pipe. The end of the liquid pumping pipe (31) away from the liquid pump (30) passes through the filter plate (28) and extends directly below it. The end of the liquid delivery pipe away from the liquid pump (30) is located directly above the filter plate (28).

5. The in-situ treatment system for riverbed sediment pollution with automatic cleaning function according to claim 1, characterized in that: The telescopic pipe assembly includes a first conduit (15), a second conduit (16), a first sealing end cap (33), a sealing plug (23), and a second sealing end cap (34). The upper end of the first conduit (15) is fixedly connected to the upper connecting plate (14) and communicates with the guide channel (14-1). The lower end of the second conduit (16) is fixed to the top of the processing cylinder (19) and communicates with the conveying pipe (27). The first sealing end cap (33) is fixed to the upper end of the second conduit (16). The sealing plug (23) is fixedly connected to the first sealing end cap (33) and extends into the second conduit (16). The lower end of the first conduit (15) passes through the first sealing end cap (34) in sequence. A sealing end cap (33) and a sealing plug (23) extend into the second conduit (16). A second sealing end cap (34) is installed on one end of the first conduit (15) that extends into the second conduit (16). The lower end of the first conduit (15) is restricted within the second conduit (16) by the second sealing end cap (34). A flow guide hole (15-1) is provided on the side wall of the lower end of the first conduit (15). The flow guide hole (15-1) is sealed by the sealing plug (23). A transmission block (25) is fixed on the rope (38) below the upper connecting plate (14). During the lifting and lowering of the pollution treatment unit, the transmission block (25) contacts the bottom of the upper connecting plate (14).

6. The in-situ treatment system for riverbed sediment pollution with automatic cleaning function according to claim 1, characterized in that: The rope winding mechanism includes a rope (38), a rope winding mounting frame (7), a first guide wheel (11), a winding shaft, and a winding motor. The rope winding mounting frame (7) is fixed to the top of the upper support plate (5). The winding shaft is horizontally rotatably connected inside the rope winding mounting frame (7). The winding motor is fixed inside the rope winding mounting frame (7) and connected to the winding shaft through a first drive shaft. One end of the rope (38) is connected to the winding shaft and is wound up and unwound by rotating the winding shaft. The first guide wheel (11) is located directly above the third support plate (3) and connected to the rope winding mounting frame (7) through a support arm. The other end of the rope (38) passes around the first guide wheel (11) and through the upper connecting plate (14) to connect to the lifting ring (26).

7. The in-situ treatment system for riverbed sediment pollution with automatic cleaning function according to claim 6, characterized in that: The hose winding mechanism includes a hose winding mounting frame (6), a hose winding shaft, a second guide wheel (12), a rotary sealing joint, and a hose (13). The hose winding mounting frame (6) is fixed on the second support plate (2). The hose winding shaft is horizontally arranged and parallel to the winding shaft. One end of the hose winding shaft is rotatably connected to the inner wall of one side of the hose winding mounting frame (6) through the rotary sealing joint. The other end of the hose winding shaft is connected to the inner wall of the other side of the hose winding mounting frame (6) through the second drive shaft. The hose winding shaft is a hollow shaft. One end of the hose (13) is connected to and communicates with the hose winding shaft. The hose (13) is wound and unwound by the rotation of the hose winding shaft. The second guide wheel (12) is fixed to the bottom of the upper support plate (5). The other end of the hose (13) passes around the second guide wheel (12) and is connected to the hose connector. The rotary sealing connector is also connected to the aeration conveying pipe and the bacterial liquid conveying pipe. The aeration conveying pipe and the bacterial liquid conveying pipe are connected to the hose winding shaft through the rotary sealing connector. The end of the aeration conveying pipe away from the rotary sealing connector is connected to the air compressor pump (8) fixed on the top of the third support plate (3). The end of the bacterial liquid conveying pipe away from the rotary sealing connector is connected to the bacterial liquid storage tank (4) through the bacterial liquid conveying pump (9). The bacterial liquid conveying pump (9) is equipped with a flow meter. The bacterial liquid storage tank (4) is set on the first support plate (1).

8. The in-situ treatment system for riverbed sediment pollution with automatic cleaning function according to claim 7, characterized in that: The first drive shaft is equipped with a first gear and a fourth gear, the output shaft of the rope winding motor is equipped with a second gear, the first gear and the second gear are meshed with each other, the second drive shaft is equipped with a third gear, the third gear is connected to the fourth gear through a transmission belt (10), the upper support plate is provided with a second through groove for the transmission belt (10) to pass through, and the rope and the hose are wound and released synchronously.

9. The in-situ treatment system for riverbed sediment pollution with automatic cleaning function according to any one of claims 1-8, characterized in that: An in-situ treatment method for riverbed sediment pollution using the above-mentioned treatment system includes the following steps: S1: Start the winding mechanism to lower the pollution treatment unit under its own weight, so that the lower end of the treatment cylinder is inserted into the riverbed sediment; S2: Start the air compressor pump to aerate the riverbed sediment using the aeration and bacterial liquid spraying pipes, disturb the sediment, and fully release the pollutants in the sediment into the water. S3: Start the pump to filter the river water and bottom sediment inside the treatment cylinder for 1-2 minutes. S4: After the filtration is completed in step S3, start the bacterial liquid delivery pump, add bacterial liquid through the aeration and bacterial liquid spraying pipe, and accurately control the amount added through the flow meter; S5: After step S4 is completed, the rewinding mechanism is started in reverse to lift the contamination treatment unit. During the lifting process, the outer wall of the treatment cylinder is automatically washed by the rinsing mechanism. After the protrusion on the treatment cylinder is higher than the limit plate, the servo motor is started, and then the rope is lowered to support the contamination treatment unit using the auxiliary limit mechanism.

10. The in-situ treatment system for riverbed sediment pollution with automatic cleaning function according to claim 9, characterized in that: The bacterial solution in step S3 consists of 40-60% compound probiotic suspension, 35-45% modified soy protein isolate, and 12-18% food-grade excipients. The concentration of bacteria in the compound probiotic suspension is (10⁸-10⁹) CFU / ml. The compound probiotic suspension contains Lactobacillus rhamnosus LGG, Bifidobacterium lactis BiO7, Bifidobacterium longum BL21, Lactobacillus plantarum Lp90, and Lactobacillus acidophilus LA85.

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