Water level change self-adaptive water body purification device with carbon source capable of being automatically stripped and water body purification method

Abstract

The invention discloses a water purification device capable of automatically stripping a carbon source and self-adapting to water level change. The device comprises a lower-layer plate expansion platform, a lower-layer plate, an upper-layer plate, a stripping module, a telescopic purification module, a mixed filling module, an electric hydraulic telescopic rod, a pressure sensor, a controller and a solar cell panel, the upper-layer plate is provided with a stripping module, a telescopic purification module is arranged below the lower-layer plate, a valve is arranged at the top of the telescopic purification module, the mixed filling module is arranged on an expansion platform of the lower-layer plate, and the stripping module and the mixed filling module are arranged in a protective cover; the controller is in signal connection with the stripping module, the telescopic purification module, the valve and the mixed filling module, and the solar cell panel supplies power to all the modules. The mixed filling module stirs the filler and the biomass carbon source, the telescopic purification module stretches out and draws back and the valve is opened and closed, automatic stripping and supply of the carbon source are achieved, the pressure sensor senses water level changes to conduct self-adaptive regulation and control, the water purification adaptability and the purification effect are improved, and the device is low in energy consumption and stable in operation.

Description

Technical Field

[0001] This invention relates to a water purification device and method that automatically removes carbon sources and adapts to changes in water level, belonging to the field of ecological environment. Background Technology

[0002] Near the discharge outlets of wastewater treatment plants into natural water bodies, purification devices are often added for deep purification to improve water quality. Ecological floating beds are one such commonly used purification device. Traditional ecological floating beds are mostly surface-mounted, with aquatic plants planted on modular floating bodies on the water surface. The degradation of pollutants in the water is promoted through root absorption and microbial attachment. Existing improved ecological floating beds typically have a biofilm carrier placed underneath, mainly using artificial aquatic plants and inorganic fillers. Artificial aquatic plants are economical, but their biofilm formation effect is generally average. Inorganic fillers, although more expensive than artificial aquatic plants, are more suitable as biofilm carriers because their porous structure increases the surface area for microbial attachment. However, the filler material is usually placed in the plant baskets of the floating bed or wrapped in a net and suspended below the water surface. It is easily limited by the size of the net and other factors, which makes its underwater function area very limited and the utilization rate of vertical space low. Moreover, under the conditions of frequent water level changes in natural water bodies, it cannot automatically adjust the length of the net to achieve space utilization across the entire vertical water depth range, resulting in a significant limitation on its flexibility in utilizing vertical space. In addition, after the existing filler tube has been covered with a film for a period of time, its inner wall and holes are easily blocked, which affects the purification effect to a certain extent.

[0003] Furthermore, wastewater effluent from wastewater treatment plants often exhibits a low carbon-to-nitrogen ratio, meaning it contains high nitrogen concentrations but lacks bioavailable carbon sources, limiting microbial denitrification. Adding an affordable biomass carbon source to provide electron donors can promote denitrification, significantly increasing the denitrification rate and further improving water purification efficiency. Existing indoor studies have shown that mixing inorganic packing materials with biomass carbon sources is an effective method to further improve water purification efficiency. However, this is rarely used in actual water purification because the manual mixing of packing materials and biomass carbon sources is cumbersome, and the waste biomass carbon sources after carbon release require regular replacement, with manual separation being even more troublesome, making it impossible to recycle the expensive inorganic packing materials.

[0004] Therefore, the key issue this patent aims to address is how to develop an adaptive water purification device that can automatically remove carbon sources for water bodies with fluctuating water levels. Summary of the Invention

[0005] Purpose of the invention: In order to overcome the shortcomings of the existing technology, the present invention provides a water purification device that can automatically mix and peel off carbon sources and adapt to changes in water level. It can automatically adjust the length of the water purification unit according to changes in water depth, and the amount of the "carbon source-filler" mixture in the water purification unit can be adjusted synchronously. In addition, the carbon source can be automatically peeled off and the filler can be recycled, thereby greatly improving the utilization rate of underwater purification space and the convenience of carbon source replacement.

[0006] Technical Solution: To solve the above-mentioned technical problems, the present invention provides a water purification device with automatic carbon source stripping and adaptive water level change, comprising a lower plate expansion platform mounted on a lower plate, an upper plate above the lower plate, and a rigid connection between the lower and upper plates. The upper plate has a stripping module, and a retractable purification module is located below the lower plate. A valve is located at the top of the retractable purification module. A mixing module is installed on the lower plate expansion platform. Both the stripping module and the mixing module are located within a protective cover, which is mounted on the lower plate expansion platform. An electro-hydraulic telescopic rod for fixing the entire device is located at the center of the lower plate. A pressure sensor is located on the lower surface of the lower plate and is connected to a controller. The controller is also connected to the stripping module, the retractable purification module, the valve, and the mixing module. A solar panel for powering each module is also located on the lower plate expansion platform. The packing material and biomass carbon source are stirred by the mixing module. When the telescopic packing tube extends, the valve opens. The stirred packing material and biomass carbon source in the stripping module enter the telescopic packing tube; when the telescopic packing tube shortens, the valve opens, and the packing material and biomass carbon source in the telescopic packing tube enter the stripping module.

[0007] Preferably, the electro-hydraulic telescopic rod is divided into an inner rod and an outer rod. The length of the inner rod is adapted to the maximum length of the telescopic packing tube, and the bottom of the outer rod is fixedly connected to a foot fork. In actual use, after the foot fork is fixed, the electro-hydraulic telescopic rod moves, driving the telescopic packing tube to move synchronously.

[0008] Preferably, the mixing module includes a fixed bracket, a connecting block, a slide rail, a first stepper motor, a lead screw, a stirring motor, and a stirring head. The fixed bracket is fixedly installed on the lower plate expansion platform. The first stepper motor and the slide rail are rigidly mounted on the fixed bracket. The lead screw is fixedly connected to the first stepper motor through a coupling. The stirring motor is fixedly installed on the connecting block. The stirring head is fixedly connected to the rotating shaft of the stirring motor. The connecting block is threadedly engaged with the lead screw. The first stepper motor drives the lead screw to rotate, thereby driving the connecting block to move along the slide rail.

[0009] Preferably, the thickness of the lower plate is greater than that of the lower plate extension platform, and it is fixed with screws; the lower plate extension platform has an arc-shaped groove, the lower plate extension platform is made of plastic, and the lower plate is made of metal.

[0010] Preferably, the stripping module includes a guide block, a centrifuge bucket, a second stepper motor, a threaded rod, a centrifuge motor, and a separation cover. The diameter of the separation cover is slightly larger than that of the centrifuge bucket, and the separation cover is fitted over the outside of the centrifuge bucket. The guide block is fixedly installed on the outer wall of the separation cover, and the guide block is connected to the threaded rod by threads. The threaded rod is fixedly connected to the second stepper motor. The centrifuge bucket is installed on the upper plate and fixedly connected to the centrifuge motor. Several through holes are evenly opened at the bottom of the centrifuge bucket, and each through hole corresponds to a retractable purification module.

[0011] Preferably, the upper plate is equipped with several optical axes, and the optical axes are fitted with auxiliary guide blocks for auxiliary separation covers.

[0012] Preferably, the retractable purification module includes a circular platform, a retractable packing tube, a six-piston assembly, a lifting module, and a rod mounting base. One end of the retractable packing tube is mounted on the circular platform, and the other end is mounted on the lower plate. The upper end of the retractable packing tube is connected to a valve. The six-piston assembly includes a piston head, a connecting plate connected to the piston head, a vibration motor, and a rubber layer. The piston head is located inside the retractable packing tube. The lifting module is directly connected to the six-piston assembly by a cable. The vibration motor is located inside the piston head, and the piston head has a rubber layer on its edge. The outermost edge of the rubber layer contacts the inner wall of the retractable packing tube. When powered on, the vibration motor starts to vibrate, which vibrates the retractable packing tube and cleans the sludge adhering to it. The six-piston assembly is then lifted by the cable to clean the entire packing retractable tube.

[0013] Preferably, the lifting module includes two symmetrically arranged cables, which are respectively wound around symmetrically arranged rollers. The rollers are connected to a lifting motor. The rotation of the lifting motor drives the rollers to rotate, thereby raising or lowering the cables, thus completing the lifting of the six pistons.

[0014] Preferably, the telescopic packing tube consists of two coaxially nested tubes. The bottom of the outer tube is fixed to a circular platform using a connector. The telescopic packing tube is made of stainless steel and has through holes on its surface. A flexible rubber baffle is provided at the position where the telescopic packing tube contacts the six-piston joint.

[0015] A water purification method using an adaptive water level change water purification device with automatic carbon source stripping includes the following steps:

[0016] (1) Adjust the length of the retractable purification module according to the water depth so that it can be fixed at the bottom of the pond and the lower plate extension platform is in contact with the water surface. Tighten all bolts and fix the entire device with foot forks.

[0017] (2) After the device is fixed, the biomass carbon source is cut into small pieces that are as close as possible to the particle size of the filler, and poured into the centrifuge tank together with the filler. Then, the first step motor is controlled to descend, so that the stirring motor and stirring head are lowered to a suitable position. The stirring motor is started to drive the stirring head to stir the filler in the centrifuge tank. When the two fillers are mixed evenly, the stirring motor is controlled to stop running, so that the stirring head stops stirring the filler in the centrifuge tank. After the filler is stirred, the drive servo motor is controlled to open the valve plate. At this time, the valve plate changes from horizontal to vertical, and the channel is fully open. The stirred filler falls into the telescopic filler tube through the valve, completing the filler entry into the tube. After the filler is completely in the tube, the valve is closed, and the telescopic filler tube can be sealed. At this time, the water quality of the ecological pond can be purified.

[0018] (3) When the water level changes, the pressure value detected by the pressure sensor changes. When the pressure value increases, it indicates that the water level exceeds the lower plate. The control system will control the electric hydraulic telescopic rod to extend, so that the lower plate and the lower plate extension platform move upward until the lower plate reaches the preset value with the water surface, and the electric hydraulic telescopic rod stops working. Similarly, when the pressure value decreases, it indicates that the water level is lower than the lower plate. The control system will control the electric hydraulic telescopic rod to shorten, so that the lower plate and the water surface reach the preset value again. During the extension or shortening of the telescopic packing tube, the packing material reserved in the centrifuge tank will enter the telescopic packing tube when it extends, and the excess packing material will enter the centrifuge tank when it contracts, so as to ensure that the telescopic packing tube is in a full tube state.

[0019] (4) Based on the second-order kinetic equation of the carbon source slow release composite, the carbon source slow release cycle can be obtained, and the replacement time can be calculated. After the replacement time is reached, the valve is opened, and then the lifting module is used to drive the six-piston to lift, and the biomass carbon source and packing mixture in the telescopic packing tube are pushed into the centrifuge tank through the valve, and then the valve is closed.

[0020] (5) After the mixing of the filler is completed, turn on the centrifuge motor to drive the centrifuge barrel to rotate. The centrifuge barrel maintains a stable rotation state, and the filler eventually falls into the circular collection trough outside the centrifuge barrel to complete the collection of the filler. The biomass carbon source with a smaller density is subjected to a smaller centrifugal force and is relatively close to the central axis of the barrel during centrifugation, showing a centripetal aggregation trend.

[0021] (6) Use the mixing module again to stir, and at the same time, the two second stepper motors rotate, driving the threaded rod to rotate, so that the guide block can move down along the threaded rod. At this time, the slope of the centrifuge can readjust to the height of the existing packing in the barrel. Turn on the centrifuge motor again to drive the centrifuge to rotate and separate the packing again. That is, when the height of the packing changes, repeat the steps of adjusting the slope height of the centrifuge hood multiple times so that the slope of the centrifuge hood can adapt to the height of the existing packing in the barrel.

[0022] (7) Collect the separated biomass carbon source waste, replace it with a new biomass carbon source and put it into the centrifuge. The packing material in the circular collection tank can be reused. Put the packing material back into the centrifuge and repeat the previous steps (2)-(7) to complete the mixing-purification-stripping process again.

[0023] Beneficial effects: The water purification device and method of the present invention, which automatically removes carbon sources and adapts to changes in water level, has the following advantages:

[0024] 1. The water level is monitored in real time by a pressure sensor at the bottom of the lower plate. Combined with an electric hydraulic telescopic rod, the retractable purification module can be precisely adjusted, enabling the purification device to adapt to dynamic changes in the water level.

[0025] 2. The combination of the electric hydraulic telescopic rod and the optical shaft seat enables precise vertical adjustment of the telescopic purification module. In addition, with the help of the mixing module and the stripping module, the device can work with the telescopic packing tube to flexibly replenish or store the packing material, thus improving the purification effect of the entire device.

[0026] 3. The lifting module drives the six pistons to move vertically inside the telescopic packing tube. Combined with the vibration cleaning function of the vibration motor, the telescopic packing tube can be cleaned when the carbon source is replaced. In addition, the wires embedded in the cable not only simplify the external pipeline layout of the entire system and improve the system integration and aesthetics, but also effectively enhance the reliability and anti-winding ability of the device, reduce the failure rate and maintenance difficulty, and ensure that the vibration motor inside the piston can work normally. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of a water purification device with automatic carbon source stripping and adaptive water level change according to the present invention. Figure 1 ;

[0028] Figure 2 This is a schematic diagram of the overall structure of a water purification device with automatic carbon source stripping and adaptive water level change according to the present invention. Figure 2 ;

[0029] Figure 3 This is a schematic diagram of the mixing module structure of a water purification device with automatic carbon source stripping and adaptive water level change according to the present invention.

[0030] Figure 4 This is a schematic diagram of the stripping module structure of a water purification device with automatic carbon source stripping and adaptive water level change according to the present invention. Figure 1 ;

[0031] Figure 5 This is a schematic diagram of the stripping module structure of a water purification device with automatic carbon source stripping and adaptive water level change according to the present invention. Figure 2 ;

[0032] Figure 6 This is a partial cross-sectional view of the stripping module of a water purification device with automatic carbon source stripping capability and adaptive water level change according to the present invention.

[0033] Figure 7 This is a schematic diagram of the centrifuge tank structure of a water purification device with automatic carbon source stripping and adaptive water level change according to the present invention.

[0034] Figure 8 This is a schematic diagram of the separation hood structure of a water purification device with automatic carbon source stripping and adaptive water level change according to the present invention.

[0035] Figure 9 This is a schematic diagram of the retractable purification module structure of a water purification device with automatic carbon source stripping and adaptive water level change according to the present invention.

[0036] Figure 10 This is a schematic diagram of a six-piston structure of a water purification device with automatic carbon source stripping and adaptive water level change according to the present invention.

[0037] Figure 11 This is a schematic diagram of the electric hydraulic telescopic rod structure of a water purification device with automatic carbon source stripping and adaptive water level change according to the present invention.

[0038] Figure 12 This is a schematic diagram of the vibration motor structure of a water purification device with automatic carbon source stripping and adaptive water level change according to the present invention.

[0039] Figure 13 This is a schematic diagram of the telescopic packing tube of a water purification device with automatic carbon source stripping and adaptive water level change according to the present invention.

[0040] Figure 14 This is a schematic diagram of the lifting module of a water purification device with automatic carbon source stripping and adaptive water level change according to the present invention.

[0041] Figure 15 This is a schematic diagram of the valve structure of a water purification device with automatic carbon source stripping and adaptive water level change according to the present invention.

[0042] Figure 16 This is a schematic diagram of a lower plate structure with an adaptive water level change and automatic carbon source stripping capability according to the present invention.

[0043] Figure 17 This is the working state of a water purification device with automatic carbon source stripping and adaptive water level change according to the present invention. Figure 1 ;

[0044] Figure 18This is the working state of a water purification device with automatic carbon source stripping and adaptive water level change according to the present invention. Figure 2 ;

[0045] In the diagram: 1. Mixing module, 11. Fixed bracket, 12. Connecting block, 13. Slide rail, 14. First stepper motor, 15. Lead screw, 16. Stirring motor, 17. Stirring head; 2. Separation module, 21. Guide block, 22. Centrifuge tank, 23. Second stepper motor, 24. Threaded rod, 25. Centrifuge motor, 26. Separation cover, 27. Auxiliary guide block, 28. Miniature optical axis, 29. Circular storage tank; 3. Solar panel; 4. Retractable purification module, 41. Circular platform, 42. Telescopic packing tube, 42 1. Hole; 422. Flexible rubber baffle; 43. Six-piston assembly; 431. Piston head; 432. Connecting plate; 433. Vibration motor; 434. Rubber layer; 44. Lifting module; 441. Lifting motor; 442. Roller; 443. Cable; 45. Valve; 451. Valve plate; 452. Drive servo motor; 5. Electro-hydraulic telescopic rod; 51. Foot fork; 52. Outer rod; 53. Inner rod; 6. Upper plate; 7. Lower plate; 71. Through hole; 72. Lower plate extension platform; 9. Electrical control box; 10. Protective cover. Detailed Implementation

[0046] The invention will now be further described with reference to the accompanying drawings.

[0047] Please see Figure 1-18 A water purification device with automatic carbon source stripping and adaptive water level change includes a mixing module 1, a stripping module 2, a solar panel 3, a retractable purification module 4, an electro-hydraulic telescopic rod 5, an upper plate 6, and a lower plate 7. The upper plate 6 and the lower plate 7 are arranged parallel to each other and are rigidly connected at their center by a connecting column. The stripping module 2 is installed above the upper plate 6, the retractable purification module 4 is installed below the lower plate 7, the mixing module 1 is installed on the extension platform 72 of the lower plate 7, and the electro-hydraulic telescopic rod 5 is used to fix the entire device.

[0048] The mixing module 1 includes a fixed bracket 11, a connecting block 12, a slide rail 13, a first stepper motor 14, a lead screw 15, a stirring motor 16, and a stirring head 17. The fixed bracket 11 is fixedly installed on the lower plate 7. The first stepper motor 14 and the slide rail 13 are rigidly mounted on the fixed bracket 11. The lead screw 15 is fixedly connected to the first stepper motor 14 through a coupling. The stirring motor 16 is fixedly installed on the connecting block 12. The stirring head 17 is fixedly connected to the rotating shaft of the stirring motor 16.

[0049] Furthermore, the lower plate 7 is slightly thicker than the lower plate extension platform 72, and the two are fixed together with screws. The lower plate extension platform 72 has a through hole 71 for passing the cable 443 of the lifting module 44 through the lower plate 7. The lower plate extension platform 72 is a multi-functional platform for installing solar panels, equipment boxes, and other accessories. It also has an arc-shaped groove, allowing it to function as a multi-functional planting platform and for suspending biological ropes. In addition, the design of the lower plate extension platform 72 facilitates the transportation and storage of the device and also aids in installation. Furthermore, the lower plate extension platform 72 can be made of plastic to increase buoyancy, while the lower plate 7 can be made of metal to increase rigidity.

[0050] Furthermore, a pressure sensor 8 is also provided at the bottom of the lower plate 7. The pressure sensor 8 is used to monitor the immersion depth of the lower plate in real time, thereby calculating the actual water level. The control system receives the water level from the pressure sensor and adjusts according to the preset purification strategy. When a drop in water level is detected, the control system will issue a command to drive the electric hydraulic telescopic rod 5 to shorten, thereby moving the entire device fixed on it downwards to ensure that the biofilm carrier in the telescopic packing tube remains below the water surface, avoiding loss of biofilm activity due to dehydration. When the water level rises, the control system will issue a command to drive the electric hydraulic telescopic rod to extend, moving the entire device upwards to keep the lower plate 7 above the water surface.

[0051] Furthermore, the connecting block 12 is provided with a threaded hole, which is adapted to the size of the lead screw 15 and threaded together, and is used in conjunction with the first stepper motor 14 to adjust the contact area between the stirring motor 16 and the stirring head 17 and the material.

[0052] Furthermore, the electro-hydraulic telescopic rod 5 passes through the circular platform 41, and the telescopic end of the electro-hydraulic telescopic rod 5 is fixedly connected to the circular platform 41, with the top of the electro-hydraulic telescopic rod 5 fixed to the lower plate 7.

[0053] Specifically, the pressure sensor 8 is used to monitor the immersion depth of the lower plate in real time, thereby calculating the actual water level. The control system receives the water level from the pressure sensor and adjusts according to the preset purification strategy. When a drop in water level is detected, the control system will issue a command to drive the electro-hydraulic telescopic rod 5 to shorten, thereby moving the entire device fixed on it downwards to ensure that the biofilm carrier in the telescopic packing tube 42 remains below the water surface, preventing loss of biofilm activity due to dehydration. When the water level rises, the control system will issue a command to drive the electro-hydraulic telescopic rod 5 to extend, moving the entire device upwards to keep the lower plate 7 above the water surface.

[0054] Specifically, the electro-hydraulic telescopic rod 5 consists of an inner rod and an outer rod. The length of the inner rod is adapted to the maximum length of the telescopic packing tube 42, meaning the circular platform 41 moves synchronously with the inner rod. This is used to adjust the height of the purification device to adapt to changes in water level, enabling purification across the entire water depth. A foot fork 51 is fixedly connected to the bottom of the outer rod to secure the purification device to the riverbed. In actual use, after the foot fork is fixed, the circular platform 41 is approximately 3cm away from the riverbed mud. The electric hydraulic telescopic rod 5 then moves, causing the circular platform 41 to move synchronously.

[0055] The stripping module 2 includes a guide block 21, a centrifuge tank 22, a second stepper motor 23, a threaded rod 24, a centrifuge motor 25, and a separation cover 26. The diameter of the separation cover 26 is slightly larger than that of the centrifuge tank 22. The separation cover 26 is fitted over the outside of the centrifuge tank 22. In actual use, a gap is maintained between the centrifuge tank 22 and the separation cover 26 to ensure that the centrifuge tank 22 can rotate while preventing debris from entering between the centrifuge tank 22 and the separation cover 26. The guide block 21 is fixedly installed on the outer wall of the separation cover 26 and threadedly connected to the threaded rod 24. The threaded rod 24 is fixedly connected to the second stepper motor 23. The centrifuge tank 22 is installed on the upper plate 6 and fixedly connected to the centrifuge motor 25, allowing it to rotate centrifugally. Six through holes are evenly opened at the bottom of the centrifuge tank 22, and each through hole is provided with a telescopic packing tube 42.

[0056] Furthermore, the centrifuge cylinder 22 is provided with a separation hood 26 on its exterior, which can move up and down under the action of the guide block 21, the second stepper motor 23, and the threaded rod 24 for centrifugal separation of materials. Specifically, the guide block 21 is symmetrically arranged on the outside of the separation hood 26, and the guide block 21 is provided with a threaded hole that matches the size of the threaded rod 24. By rotating the second stepper motor 23, the threaded rod 24 can be driven to rotate, thereby adjusting the slope height of the separation hood 26 to achieve the slope height required for separating different volumes of packing material from biomass carbon sources.

[0057] Furthermore, to make the lifting and lowering of the separation hood 26 more stable, an auxiliary guide block 27 is provided on the outside of the separation hood 26. The auxiliary guide block 27 has a guide hole, which is slidably connected to the micro optical axis 28 to improve the stability of the separation hood 26. In actual use, during the rotation of the centrifuge tank 22, the angular velocity of the packing is greater than the radius of the centrifuge tank 22. The packing on the surface will continue to move upward and outward along the slope of the separation hood 26, and finally fall into the circular collection trough 29 installed on the lower plate expansion platform 72. The biomass carbon source with lower density is subjected to less centrifugal force and is relatively close to the central axis of the tank during centrifugation, showing a centripetal aggregation trend. As the packing in the tank decreases, the height of the packing in the centrifuge tank decreases, and at this time the surface layer is basically biomass carbon source, while the packing in the middle and lower layers is buried, resulting in poor centrifugation effect. At this time, the second stepper motor 23 is started, and the motor drives the threaded rod 24 to rotate, thereby causing the guide block 21 and the auxiliary guide block 27 to move the centrifuge barrel 22 downward. Because the screw is threadedly engaged with the corresponding square connecting block, when the screw rotates, it drives the two connecting blocks connected to it to move downward along the screw axis, so that the separation cover 26 readjusts to the height of the existing packing in the centrifuge barrel 22.

[0058] Specifically, the separation cover 26 is made of stainless steel or polymer plastic. In this embodiment, a polymer material is used, specifically polyetheretherketone (PEEK), which has high structural strength and self-lubricating properties, with a friction coefficient of less than 0.1.

[0059] The retractable purification module 4 includes a circular platform 41, a retractable packing tube 42, a six-piston 43, a lifting module 44, a valve 45, and a guide fixing seat 46. The six-piston 43 is slidably disposed in the retractable packing tube 42, and the piston head 431 can slide up and down inside the retractable packing tube 42. The lifting module 44 is directly connected to the six-piston 43 by a cable 443, and the valve 45 is fixedly installed at the inlet of the retractable packing tube 42.

[0060] Furthermore, the six-piston 43 includes a piston head 431, a connecting plate 432 connected to the piston head, a vibration motor 433, and a rubber layer 434. The piston head 431 is disposed inside the telescopic packing tube 42. The lifting module 44 is directly connected to the six-piston 43 by a cable 443. The vibration motor 433 is disposed inside the piston head 431.

[0061] Specifically, the vibration motor 433 is located inside the piston head 431, and a rubber layer 434 is provided on the edge of the piston head. The outermost part of the rubber layer contacts the inner wall of the telescopic packing tube 42. When energized, the vibration motor 433 begins to vibrate, which in turn vibrates the telescopic packing tube 42, cleaning up any sludge or other deposits adhering to it. Furthermore, by driving the six-piston 43 upward via the cable 443, the entire telescopic packing tube 42 can be cleaned.

[0062] Furthermore, a flexible rubber baffle 422 is provided at the contact position between the six-piston 43 and the telescopic packing tube 42 to prevent raw material leakage. The lifting module 44 is fixedly connected to the connecting plate of the six-piston 43 for lifting the six-piston 43. In actual use, each of the six telescopic packing tubes 42 is equipped with a piston head 431. These pistons are connected by a hexagonal connecting plate to form the six-piston 43. The lifting module 44 is provided with two symmetrically arranged cables 443. The cables 443 pass through the through holes 71 of the lower plate 7 and are connected to the six-piston 43. The two cables are respectively wound on symmetrically arranged rollers. The rollers are connected to the lifting motor 441. The rotation of the lifting motor 441 drives the roller 442 to rotate, thereby lifting or lowering the cables 443, thus completing the lifting of the six-piston 43, so as to realize the recovery of the packing biochar mixture into the centrifuge tank 22 for stripping.

[0063] Specifically, the flexible rubber baffle in the contact area between the six-joint piston 43 and the telescopic packing tube 42 is in a closed state by default. When the six-joint piston 43 rises or falls, the rubber baffle at the corresponding position is squeezed and opened. However, as the piston continues to move, the flexible rubber baffle, which is not squeezed by the piston, will return to the closed state.

[0064] Specifically, the central region of the cable 443 is composed of high-strength aramid fiber bundles, and its outer layer is wrapped with polyether-type polyurethane material through a co-extrusion process. The polyurethane material integrates flexible wires, which are used to supply power to the vibration motor 433.

[0065] Furthermore, the telescopic packing tube 42 consists of two coaxially nested tubes. The bottom of the outer tube is fixed to the circular platform 41 using a connector. The telescopic packing tube 42 is made of stainless steel and has through holes 421 and flexible rubber baffles 422 on its surface for water to flow in and out of the telescopic packing tube 42.

[0066] Specifically, a valve 45 is installed at the top of the telescopic packing tube 42. The valve 45 includes a valve plate 451 and a drive servo motor 452. The diameter of the valve 45 cavity is the same as the inner diameter of the telescopic packing tube 42, and the valve plate 451 is connected to the drive servo motor 452 to control the opening and closing of the valve plate 451.

[0067] The protective cover 10 is made of transparent material. In this embodiment, the protective cover 10 is made of transparent acrylic material. The size of the protective cover 10 is adapted to the size of the circular storage groove 29, so that the protective cover 10 can slide up and down along the circular storage groove 29. This allows the protective cover to protect various electrical components. In addition, it can also prevent the packing material left in the centrifuge barrel 22 from being soaked by rainwater and releasing the carbon source prematurely.

[0068] In actual use, when the water level changes, the pressure sensor 8 monitors the immersion depth of the lower plate in real time, thereby calculating the actual water level. The control system receives the water level from the pressure sensor 8 and adjusts according to the preset purification strategy. Simultaneously, during the adjustment process of the electro-hydraulic telescopic rod 5, the control system sends corresponding commands to the valve. When the telescopic packing tube 42 extends under the action of the electro-hydraulic telescopic rod 5, the control system opens the valve plate, allowing the packing material stored in the centrifuge tank 22 to enter the telescopic packing tube 42 to fill the gap caused by the extension, ensuring better purification. Similarly, when the telescopic packing tube 42 retracts, the control system opens the valve plate 451, allowing excess packing material from the retracted tube to enter the centrifuge tank 22, preventing damage from the packing material inside the tube.

[0069] Furthermore, when the control system detects that the telescopic packing tube 42 is contracting or extending, it will control the stirring motor 16 and stirring head 17 of the mixing module 1 to perform low-speed, small-amplitude stirring and mixing in the centrifuge tank 22 to prevent the packing from caking and losing its activity. At the same time, it can also prevent the packing from caking and being unable to enter the telescopic packing tube 42.

[0070] Example:

[0071] (1) In this embodiment, the filler and biomass carbon source are ceramsite and corn cob, respectively. Ceramsite is an inorganic biological carrier filler with stable structure and high porosity. When operating underwater, its surface and pores provide a large number of attachment sites for microorganisms, which is conducive to the rapid attachment and stable growth of biofilm. Under aerobic or anoxic conditions, different types of microorganisms (such as nitrifying bacteria and denitrifying bacteria) work synergistically on the surface of ceramsite to degrade ammonia nitrogen, nitrite, nitrate and organic pollutants in the water. Corn cob is a natural organic slow-release carbon source material. It slowly degrades underwater, releasing soluble organic matter (such as cellulose degradation products and soluble carbon compounds), providing carbon source support for denitrifying bacteria in the water, thereby promoting the reduction of nitrate to nitrogen. This is of great significance in treating water bodies with low C / N ratios, such as effluent, and can effectively improve the removal rate of total nitrogen.

[0072] (2) When using this device, first fix the electric hydraulic telescopic rod 5 to the bottom of the water body using the foot fork, so that the device can be fixed on the riverbed and the lower plate 7 is in contact with the water surface. The initial state of the device is that the telescopic filler tube 42 is fully retracted. In actual use, according to the actual depth of the ecological pond, the telescopic filler tube 42 is precisely adjusted by the electric telescopic hydraulic rod 5. When the telescopic filler tube is adjusted to the appropriate position, the filler can be put in. When it is necessary to lift the telescopic filler tube 42, simply control the electric hydraulic telescopic rod 5 to move upward. At this time, the telescopic filler tube 42 moves synchronously under the drive of the inner rod of the electric hydraulic telescopic rod. For the fixed diagram of the device in water bodies of different depths, please refer to the diagram. Figure 15and Figure 16 .

[0073] (3) After adjusting the device, cut the corn cob into small pieces that are as close as possible to the particle size of the ceramic granules, and pour them into the centrifuge tank 22 together with the ceramic granules. Then, control the first step motor 14 to descend, so that the stirring motor 16 and the stirring head 17 descend to the appropriate position. Start the stirring motor 16 to drive the stirring head 17 to stir the packing material in the centrifuge tank 22. When the two packing materials are mixed evenly, control the stirring motor 16 to stop running, so that the stirring head 17 stops stirring the packing material in the centrifuge tank 22. After the packing material is stirred, control the drive servo motor 452 to control the valve plate 451 to open the valve 45. At this time, the valve plate 451 changes from horizontal to vertical, and the channel is fully open. The stirred packing material falls into the telescopic packing tube 42 through the valve 45, completing the packing material entry into the tube. After the packing material is completely in the tube, drive the servo motor 452 to change the valve plate 451 from vertical to horizontal and close the valve 45, so that the telescopic packing tube 42 can be sealed. At this time, the water quality of the ecological pond can be purified. After completing the initial filling operation of the mixed packing material of ceramsite and corn cob, reserve spare mixed packing material in the centrifuge tank 22 with the same ratio as the initial mixing (the amount of the reserve is determined according to the maximum extension length of the telescopic packing tube 42 to ensure that it can completely fill the gap in the tube after extension). The reserved packing material is stored in the existing cavity above the through hole at the bottom of the centrifuge tank 22 and is kept in a naturally connected state with the valve.

[0074] (4) Based on the second-order kinetic equation of the carbon source slow-release composite, the carbon source slow-release cycle can be obtained, thereby calculating the replacement time. After the packing reaches the replacement time, valve 45 is opened, and then the lifting module 44 is used to drive the six-piston 43 to lift, pushing the corn cob and ceramsite mixture in the telescopic packing tube 42 into the centrifuge tank 22 through valve 45. Then, valve 45 is closed to prevent the packing from re-entering the telescopic packing tube 42. Since the corn cob and ceramsite waste entering the centrifuge tank 22 are often covered with biofilm and have high viscosity, the peeling module 2 is needed to stir before centrifugation to disperse the corn cob and ceramsite mixture in the centrifuge tank 22 so that they no longer stick together.

[0075] (5) After the mixing of the filler is completed, the centrifugal motor 25 is turned on to drive the centrifugal barrel 22 to rotate. The centrifugal barrel 22 maintains a stable rotation state. Due to the high density of the ceramsite, as the centrifugal barrel speed increases and stabilizes, the ceramsite experiences a large centrifugal force. The surface ceramsite continues to move upward and outward along the slope of the centrifugal cover 26 and finally falls into the circular collection trough 29 outside the centrifugal barrel 22, completing the collection of ceramsite. The corn cob, which has a lower density, experiences a smaller centrifugal force and is relatively close to the central axis of the barrel during centrifugation, showing a centripetal aggregation trend. In addition, as the ceramsite in the barrel decreases, the filler height in the centrifugal barrel 22 decreases. At this time, the surface layer is basically corn cob, and the ceramsite in the middle and lower layers is buried, resulting in poor centrifugation effect. At this time, the mixing module 1 is used again to stir, so that the filler in the barrel is mixed evenly again. At the same time, the two symmetrically arranged second stepper motors 23 rotate, driving the threaded rod 24 to rotate, so that the guide block 21 can move downward along the threaded rod. At this point, the slope of the centrifuge bucket 22 can readjust to the height of the existing packing material inside the bucket. The centrifuge motor 25 can be turned on again to drive the centrifuge bucket 22 to rotate and separate the packing material again. That is, when the height of the packing material changes, the steps of adjusting the slope height of the centrifuge cover 26 can be repeated multiple times to make the slope of the centrifuge cover 26 adapt to the height of the existing packing material inside the bucket. After the mixed material is sorted, the slope of the centrifuge cover 26 can be raised to the highest point.

[0076] (6) Collect the separated corn cob waste and replace it with new corn cobs in centrifuge tank 22. The ceramsite in the circular storage tank 29 can be reused. Put the ceramsite back into centrifuge tank 22. Repeat the previous steps (3)-(5) to complete the mixing-purification-stripping process again.

[0077] (7) When the water level changes, the pressure value detected by the pressure sensor 8 changes. When the pressure value increases by more than 10% of the predetermined value, it indicates that the water level is above the lower plate 7. The control system will control the electric hydraulic telescopic rod 5 to extend, so that the lower plate 7 and the lower plate extension platform 72 move upward until the lower plate 7 reaches the preset value (the set value of the pressure sensor) with respect to the water surface. Then the electric hydraulic telescopic rod 5 stops working. Similarly, when the pressure value decreases by 10% of the predetermined value, it indicates that the water level is below the lower plate 7. The control system will control the electric hydraulic telescopic rod 5 to shorten, so that the lower plate 7 and the water surface reach the preset value again. During the extension or shortening of the telescopic packing tube 42, the packing material reserved in the centrifuge tank 22 will enter the telescopic packing tube when the telescopic packing tube 42 extends. When the telescopic packing tube 42 contracts, the excess packing material will enter the centrifuge tank to ensure that the telescopic packing tube 42 is in a full tube state.

[0078] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A water purification device that automatically removes carbon sources and adapts to changes in water level, characterized in that: The system includes a lower-layer expansion platform mounted on the lower-layer plate. An upper-layer plate is located above the lower-layer plate, and the two plates are rigidly connected. The upper-layer plate contains a stripping module, and a retractable purification module is located below the lower-layer plate. A valve is located on the top of the retractable purification module. A mixing module is installed on the lower-layer expansion platform. Both the stripping and mixing modules are located within a protective cover, which is mounted on the lower-layer expansion platform. An electro-hydraulic telescopic rod for securing the entire device is located at the center of the lower-layer plate. A pressure sensor is located on the lower surface of the lower-layer plate and is connected to a controller. The controller is also connected to the stripping module, the retractable purification module, the valve, and the mixing module. A solar panel for powering each module is also located on the lower-layer expansion platform. The packing material and biomass carbon source are stirred through the mixing module. When the retractable packing tube extends, the valve opens, allowing the stirred packing material and biomass carbon source from the stripping module to enter the retractable packing tube. When the retractable packing tube shortens, the valve opens, allowing the packing material and biomass carbon source from the retractable packing tube to enter the stripping module.

2. The water purification device with automatic carbon source stripping and adaptive water level change according to claim 1, characterized in that: The electric hydraulic telescopic rod is divided into an inner rod and an outer rod. The length of the inner rod is adapted to the maximum length of the telescopic packing tube. The bottom of the outer rod is fixedly connected to a foot fork. In actual use, after the foot fork is fixed, the electric hydraulic telescopic rod moves, driving the telescopic packing tube to move synchronously.

3. The water purification device with automatic carbon source stripping and adaptive water level change according to claim 1, characterized in that: The mixing module includes a fixed bracket, a connecting block, a slide rail, a first stepper motor, a lead screw, a stirring motor, and a stirring head. The fixed bracket is fixedly installed on the lower plate expansion platform. The first stepper motor and the slide rail are rigidly mounted on the fixed bracket. The lead screw is fixedly connected to the first stepper motor through a coupling. The stirring motor is fixedly installed on the connecting block. The stirring head is fixedly connected to the rotating shaft of the stirring motor. The connecting block is threadedly engaged with the lead screw. The first stepper motor drives the lead screw to rotate, thereby driving the connecting block to move along the slide rail.

4. The water purification device with automatic carbon source stripping and adaptive water level change according to claim 1, characterized in that: The lower plate is thicker than the lower plate expansion platform and is fixed with screws; the lower plate expansion platform has an arc groove, the lower plate expansion platform is made of plastic, and the lower plate is made of metal.

5. The water purification device with automatic carbon source stripping and adaptive water level change according to claim 1, characterized in that: The stripping module includes a guide block, a centrifuge bucket, a second stepper motor, a threaded rod, a centrifuge motor, and a separation cover. The diameter of the separation cover is slightly larger than that of the centrifuge bucket. The separation cover is fitted over the outside of the centrifuge bucket. The guide block is fixedly installed on the outer wall of the separation cover. The guide block is connected to the threaded rod by threads. The threaded rod is fixedly connected to the second stepper motor. The centrifuge bucket is installed on the upper plate and fixedly connected to the centrifuge motor. Several through holes are evenly opened at the bottom of the centrifuge bucket, and each through hole corresponds to a retractable purification module.

6. The water purification device with automatic carbon source stripping and adaptive water level change according to claim 5, characterized in that: The upper plate is equipped with several optical axes, and auxiliary guide blocks with auxiliary separation covers are fitted on the optical axes.

7. The water purification device with automatic carbon source stripping and adaptive water level change according to claim 1, characterized in that: The retractable purification module includes a circular platform, a retractable packing tube, a six-piston assembly, a lifting module, and a rod mounting base. One end of the retractable packing tube is mounted on the circular platform, and the other end is mounted on the lower plate. The upper end of the retractable packing tube is connected to a valve. The six-piston assembly includes a piston head, a connecting plate connected to the piston head, a vibration motor, and a rubber layer. The piston head is located inside the retractable packing tube. The lifting module is directly connected to the six-piston assembly by a cable. The vibration motor is located inside the piston head, and the piston head has a rubber layer on its edge. The outermost edge of the rubber layer contacts the inner wall of the retractable packing tube. When powered on, the vibration motor starts to vibrate, which vibrates the retractable packing tube and cleans the sludge and deposits attached to it. The six-piston assembly is then raised via the cable to clean the entire packing retractable tube.

8. The water purification device with automatic carbon source stripping and adaptive water level change according to claim 7, characterized in that: The lifting module includes two symmetrically arranged cables, which are wound around symmetrically arranged rollers. The rollers are connected to a lifting motor. The rotation of the lifting motor drives the rollers to rotate, thereby raising or lowering the cables, thus completing the lifting of the six pistons.

9. The water purification device with automatic carbon source stripping and adaptive water level change according to claim 7 or 8, characterized in that: The telescopic packing tube consists of two coaxial nested tubes. The bottom of the outer tube is fixed to a circular platform using a connector. The telescopic packing tube is made of stainless steel and has through holes on its surface. A flexible rubber baffle is provided at the position where the telescopic packing tube contacts the six-piston joint.

10. A water purification method using a water purification device with automatic carbon source stripping and adaptive water level change as described in any one of claims 1 to 9, characterized in that, Includes the following steps: (1) Adjust the length of the retractable purification module according to the water depth so that it can be fixed at the bottom of the pond and the lower plate extension platform is in contact with the water surface. Tighten all bolts and fix the entire device with foot forks. (2) After the device is fixed, the biomass carbon source is cut into small pieces that are as close as possible to the particle size of the filler, and poured into the centrifuge tank together with the filler. Then, the first step motor is controlled to descend, so that the stirring motor and stirring head are lowered to a suitable position. The stirring motor is started to drive the stirring head to stir the filler in the centrifuge tank. When the two fillers are mixed evenly, the stirring motor is controlled to stop running, so that the stirring head stops stirring the filler in the centrifuge tank. After the filler is stirred, the drive servo motor is controlled to open the valve plate. At this time, the valve plate changes from horizontal to vertical, and the channel is fully open. The stirred filler falls into the telescopic filler tube through the valve, completing the filler entry into the tube. After the filler is completely in the tube, the valve is closed, and the telescopic filler tube can be sealed. At this time, the water quality of the ecological pond can be purified. (3) When the water level changes, the pressure value detected by the pressure sensor changes. When the pressure value increases, it indicates that the water level exceeds the lower plate. The control system will control the electric hydraulic telescopic rod to extend, so that the lower plate and the lower plate extension platform move upward until the lower plate reaches the preset value with the water surface, and the electric hydraulic telescopic rod stops working. Similarly, when the pressure value decreases, it indicates that the water level is lower than the lower plate. The control system will control the electric hydraulic telescopic rod to shorten, so that the lower plate and the water surface reach the preset value again. During the extension or shortening of the telescopic packing tube, the packing material reserved in the centrifuge tank will enter the telescopic packing tube when it extends, and the excess packing material will enter the centrifuge tank when it contracts, so as to ensure that the telescopic packing tube is in a full tube state. (4) Based on the second-order kinetic equation of the carbon source slow release composite, the carbon source slow release cycle can be obtained, and the replacement time can be calculated. After the replacement time is reached, the valve is opened, and then the lifting module is used to drive the six-piston to lift, and the biomass carbon source and packing mixture in the telescopic packing tube are pushed into the centrifuge tank through the valve, and then the valve is closed. (5) After the mixing of the filler is completed, turn on the centrifuge motor to drive the centrifuge barrel to rotate. The centrifuge barrel maintains a stable rotation state, and the filler eventually falls into the circular collection trough outside the centrifuge barrel to complete the collection of the filler. The biomass carbon source with a smaller density is subjected to a smaller centrifugal force and is relatively close to the central axis of the barrel during centrifugation, showing a centripetal aggregation trend. (6) Use the mixing module again to stir, and at the same time, the two second stepper motors rotate, driving the threaded rod to rotate, so that the guide block can move down along the threaded rod. At this time, the slope of the centrifuge can readjust to the height of the existing packing in the barrel. Turn on the centrifuge motor again to drive the centrifuge to rotate and separate the packing again. That is, when the height of the packing changes, repeat the steps of adjusting the slope height of the centrifuge hood multiple times so that the slope of the centrifuge hood can adapt to the height of the existing packing in the barrel. (7) Collect the separated biomass carbon source waste, replace it with a new biomass carbon source and put it into the centrifuge. The packing material in the circular collection tank can be reused. Put the packing material back into the centrifuge and repeat the previous steps (2)-(7) to complete the mixing-purification-stripping process again.

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