An artificial wetland anti-clogging device and method based on temperature difference

Abstract

The present invention provides an artificial wetland anti-clogging device based on temperature difference and a method thereof. The artificial wetland anti-clogging device based on temperature difference includes a soil layer; a wetland body; a water collection mechanism; a first water distribution mechanism; an aeration and flushing mechanism, the first nozzle is installed at the bottom end of the water distribution filler layer, the second nozzle is installed at an angle at the bottom end of the water distribution filler layer and the second filler layer, the first nozzle and the second nozzle are hollow truncated cone-shaped inside the top of the piston engagement, and the interior of the fixed block is slidably connected to the piston; the spring is installed inside the fixed block, and the bottom end of the spring is fixedly connected to the piston; the magnetic block is installed inside the fixed block, and the magnetic block adsorbs the iron piston at the top; a discharging mechanism; a second water distribution mechanism; a monitoring mechanism. The artificial wetland anti-clogging device based on temperature difference and a method thereof provided by the present invention have the advantages of improving the denitrification effect and effectively alleviating wetland blockage.

Description

Technical Field

[0001] The present invention relates to the technical field of artificial wetlands, and in particular to an artificial wetland anti-clogging device based on temperature difference and a method thereof. Background Art

[0002] Horizontal subsurface flow wetlands can consist of one or more levels of filler beds, each filled with a matrix and equipped with an aquiclude at the bottom. This aquiclude often utilizes a "two-layer fabric and one-film" structure. These wetlands have a high hydraulic load and high pollutant treatment capacity, effectively removing pollutants such as SS, BOD, COD, and heavy metals. Plant roots also facilitate oxygen transport, resulting in virtually no odor or mosquitoes.

[0003] With the long-term operation of horizontal subsurface flow wetlands, impurities in the water gradually clog the water distribution filler area, causing the problem of matrix gap blockage, which will not only destroy the stability of the water flow field, but also cause adverse effects such as sewage short-flow, shortened hydraulic retention time, and decreased treatment capacity. In addition, compared with vertical subsurface flow artificial wetlands, the structure of horizontal subsurface flow artificial wetlands determines the overall anaerobic environment inside them. The oxygen content inside the wetland is low, resulting in poor denitrification and removal effect.

[0004] Therefore, it is necessary to provide a new artificial wetland anti-clogging device based on temperature difference and a method thereof to solve the above technical problems. Summary of the Invention

[0005] The technical problem solved by the present invention is to provide an artificial wetland anti-clogging device based on temperature difference and a method thereof, which can improve denitrification effect and effectively alleviate wetland clogging.

[0006] In order to solve the above technical problems, the present invention provides an artificial wetland anti-clogging device based on temperature difference, which includes: a soil layer; a wetland body, wherein the wetland body includes a covering layer, a first filler layer, a second filler layer, a water outlet filler layer, a water distribution filler layer and an anti-seepage layer; the covering layer, the first filler layer, the second filler layer and the anti-seepage layer are laid in sequence from top to bottom inside the soil layer, and the water outlet filler layer and the water distribution filler layer are laid on both sides of the covering layer, the first filler layer and the second filler layer respectively; a water collecting mechanism, wherein the water collecting mechanism connects the water outlet filler layer and the second filler layer; a first water distribution mechanism, wherein the first water distribution mechanism is installed on one side of the water distribution filler layer; an aeration and flushing mechanism, wherein the aeration and flushing mechanism includes a high-pressure water pump, a blower, a connecting pipe, a first nozzle, a second nozzle, a fixed block, a fixed rod, a piston, a magnetic block and a spring, a plurality of the first nozzles are installed at the bottom end of the water distribution filler layer, a plurality of the second nozzles are installed obliquely at the bottom ends of the water distribution filler layer and the second filler layer, and the high-pressure water pump is connected to the water outlet filler layer and the second filler layer through the plurality of connecting pipes. The first nozzle is connected, and the blower is connected to the second nozzle through the other connecting pipe; the top of the first nozzle and the second nozzle is installed with the fixing rod with an "L"-shaped side wall, and the top of the fixing rod is installed with the bulb-shaped fixing block; the interior of the fixing block is slidably connected to the piston, and the piston engages with the first nozzle and the second nozzle with a hollow cone-shaped interior at the top; the spring is installed inside the fixing block, and the bottom end of the spring is fixedly connected to the piston; the magnetic block is installed inside the fixing block, and the magnetic block adsorbs the iron piston at the top; a discharging mechanism, the discharging mechanism is connected to the top of the water distribution filler layer; a second water distribution mechanism, the second water distribution mechanism is connected to the first water distribution mechanism and the discharging mechanism; a monitoring mechanism, the monitoring mechanism includes a first optical fiber, a second optical fiber and a temperature sensor, the first filler layer and the second filler layer are installed with the first optical fiber and the second optical fiber crisscrossed inside, and a plurality of temperature sensors are installed on the side walls of the first optical fiber and the second optical fiber.

[0007] Preferably, the first water distribution mechanism includes a water distribution well, a sedimentation tank, a fixed pipe, a water pump, a filter cartridge and a first water distribution pipe. The water distribution well and the sedimentation tank are arranged inside the soil layer, and the tops of the water distribution well and the sedimentation tank are connected to each other; the water pump is installed inside the water distribution well, the fixed pipe connects the water pump and the first water distribution pipe, and multiple filter cartridges are installed on the side wall of the first water distribution pipe.

[0008] Preferably, the first water distribution pipe and the filter cartridge are located inside the water distribution filler layer, and in the vertical direction, the spacing between adjacent filter cartridges gradually increases along the top end of the first water distribution pipe toward the bottom end of the first water distribution pipe.

[0009] Preferably, the second water distribution mechanism includes a water inlet pipe, a water outlet pipe, a second water distribution pipe and a nozzle, the water pump is connected to the water inlet pipe, and the water inlet pipe is connected to the water outlet pipe; the water outlet pipe is obliquely connected to the second water distribution pipe, and a plurality of the nozzles are installed on the side wall of the second water distribution pipe. In the horizontal direction, the spacing between adjacent nozzles gradually decreases along the two ends of the covering layer toward the center of the covering layer.

[0010] Preferably, the discharging mechanism includes fan blades, a rotating shaft, a fixed box, a support tube, a cylinder, a loading plate and a stirring rod. The fixed box is installed on the top of the water distribution filler layer, the support tube is installed inside the fixed box, and the first water distribution pipe is installed on the side wall of the support tube; the interior of the support tube is rotatably connected to the rotating shaft and the loading plate, and the stirring rod, the fan blades and the spiral loading plate are installed on the side wall of the rotating shaft; the rotating shaft and the fan blades are rotatably connected to the interior of the cylinder, and the water inlet pipe and the water outlet pipe are respectively installed on the side walls of the cylinder.

[0011] Preferably, the water collection mechanism includes a water collection well, a water pump, a first collecting pipe, a water pumping pipe and a second collecting pipe. The water collection well is arranged inside the soil layer. The water pump and the water pumping pipe are installed inside the water collection well, and the water pumping pipe is connected to the water pump. The first collecting pipe and the second collecting pipe are installed on the side wall of the water collection well. The first collecting pipe is connected to the interior of the water outlet filler layer, and the second collecting pipe is connected to the bottom end of the second filler layer.

[0012] Preferably, solenoid valves are respectively installed on the side walls of the first collecting pipe, the second collecting pipe, the fixed pipe, the water inlet pipe and the second water distribution pipe.

[0013] Preferably, the particle size of the particles inside the first packing layer gradually decreases along the water distribution packing layer toward the water outlet packing layer, and the particle size of the particles inside the second packing layer gradually decreases along the water distribution packing layer toward the water outlet packing layer; the particle size of the particles inside the water distribution packing layer is larger than the particle size of the particles inside the first packing layer.

[0014] Preferably, a method for using a temperature difference-based artificial wetland anti-clogging device comprises the following steps:

[0015] Step 1: When treating sewage, the first water distribution mechanism operates to transport water into the interior of the water distribution filler layer, the water distribution filler layer filters the sewage, and most of the solid particles in the sewage remain in the interior of the water distribution filler layer. The sewage after the initial filtration passes through the first filler layer and the second filler layer in sequence. The microorganisms in the first filler layer and the second filler layer decompose the harmful substances in the sewage. At the same time, the plant roots in the first filler layer and the second filler layer purify the sewage. The treated sewage enters the outlet filler layer and the interior of the water collection mechanism;

[0016] Step 2: After the sewage enters the water distribution packing layer, under the action of gravity, the sewage moves downward inside the water distribution packing layer, so that most of the sewage and the impurities it carries are deposited at the bottom of the water distribution packing layer; when the sewage is about to flow out of the water distribution packing layer, the blower operates to blow air into the second nozzle, and the air pushes the piston inside the second nozzle to move upward inside the fixed block to compress the spring. At the same time, the piston operates to resist and adsorb the magnetic block, fixing the piston, thereby opening the second nozzle and allowing air to be ejected from the second nozzle. The side wall of the fixed block is bulb-shaped. When the air is ejected, it moves upward along the side wall of the fixed block, increasing the contact area between the air and the sewage, increasing the oxygen content inside the water distribution packing layer, and reducing the deposition of organic matter in the water distribution packing layer; the height of the second nozzle gradually increases along the direction of the water distribution packing layer toward the second packing layer, so that the air ejected from the second nozzle contacts the sewage at different positions , so that the air contacts the sewage evenly and the oxygen content in the sewage is increased; the size of the particles inside the first packing layer gradually decreases along the direction of the water distribution packing layer toward the water outlet packing layer, and the size of the particles inside the second packing layer gradually decreases along the direction of the water distribution packing layer toward the water outlet packing layer; when the sewage after being mixed with air contacts the first packing layer and the second packing layer, since the particle size of the particles in this part of the first packing layer and the second packing layer is large and the spacing between the packing particles is large, it is convenient for the air-mixed sewage to run in the packing, increasing the oxygen content in this part of the packing, and facilitating the aerobic nitrifying bacteria in the packing to nitrify and decompose the sewage; the sewage after nitrification continues to move in the first packing layer and the second packing layer. At this time, the particle size of the packing in contact with the sewage gradually decreases, the gap between the packings decreases, and air is difficult to enter. The microorganisms in this part are under anaerobic conditions, which is conducive to the reproduction of denitrifying bacteria, thereby denitrifying the sewage and improving the denitrification effect;

[0017] Step three: when the sewage penetrates the interior of the water distribution packing layer and enters the first packing layer and the second packing layer, the first optical fiber and the second optical fiber are close to the water distribution packing layer, and the sewage flows through the side walls of the first optical fiber and the second optical fiber during operation. The first optical fiber and the second optical fiber are equipped with a plurality of the temperature sensors, and the first optical fiber and the second optical fiber are monitored in a crisscross manner. The temperature sensors monitor the temperature of each position of the first packing layer and the second packing layer; when a position of the water distribution packing layer is blocked, the sewage cannot pass through or penetrate through the position, so that the sewage flow state at the position is basically in a static state. Due to the stagnation of the water body, a temperature difference may occur between the blocked position and the surrounding area with smooth water flow. The temperature sensor is in an abnormal state, and the severity of the blockage of the water distribution packing layer is judged;

[0018] Step 4: When the water distribution filler layer is seriously clogged, the first water distribution mechanism stops operating, and the high-pressure water pump operates to quickly pump water into the interior of the first nozzle. Water is ejected upward from the interior of the first nozzle to backwash the water distribution filler layer from bottom to top. At the same time, air is ejected upward from the interior of the second nozzle, thereby cooperating with water to flush the impurities deposited in the water distribution filler layer upward into the interior of the discharge mechanism. At this time, the second water distribution mechanism operates to spray the sewage and the impurities flushed out from the interior of the discharge mechanism downward to the surface of the covering layer. The sewage flows along the covering layer, the first filler layer and the second filler layer. Moving downward, the wetland body is changed from a horizontal subsurface flow wetland to a vertical subsurface flow wetland, and the wetland body continues to be used. At the same time, the distribution position of microorganisms inside the wetland body is changed, and the microorganisms in part of the filler are changed from anaerobic movement to aerobic movement, degrading the organic matter in the filler and alleviating the blockage; and the impurities flushed out of the water distribution filler layer remain on the surface of the covering layer, which is convenient for plant roots to absorb and decompose the impurities; the direction of water flow is changed by the first water distribution mechanism and the second water distribution mechanism, the use mode of the wetland body is changed, the blockage inside the wetland body is alleviated, and the use time of the wetland body is extended.

[0019] Compared with related technologies, the temperature difference-based artificial wetland anti-clogging device and method provided by the present invention have the following beneficial effects:

[0020] The present invention provides an artificial wetland anti-clogging device based on temperature difference and a method thereof. When sewage enters the interior of the water distribution filler layer, the sewage moves downward inside the water distribution filler layer under the action of gravity, so that most of the sewage and the impurities it carries are deposited at the bottom of the water distribution filler layer; when the sewage is about to flow out from the interior of the water distribution filler layer, the blower operates to blow air into the interior of the second nozzle, and the air pushes the piston inside the second nozzle to move upward inside the fixed block to compress the spring, and at the same time, the piston operates to resist and adsorb the magnetic block, fixing the piston, thereby opening the second nozzle and allowing air to be ejected from the interior of the second nozzle. The side wall of the fixed block is in a bulb shape. When the air is ejected, it moves upward along the side wall of the fixed block, thereby increasing the contact area between the air and the sewage, increasing the oxygen content inside the water distribution filler layer, and reducing the deposition of organic matter in the water distribution filler layer; the height of the second nozzle gradually increases along the direction of the water distribution filler layer toward the second filler layer, so that the sewage ejected from the second nozzle is discharged. The air contacts the sewage at different positions, so that the air contacts the sewage evenly, increasing the oxygen content in the sewage; the size of the particles inside the first packing layer gradually decreases along the water distribution packing layer toward the water outlet packing layer, and the size of the particles inside the second packing layer gradually decreases along the water distribution packing layer toward the water outlet packing layer; when the sewage after being mixed with air contacts the first packing layer and the second packing layer, since the particle size of the particles in this part of the first packing layer and the second packing layer is large and the spacing between the packing particles is large, it is convenient for the air-mixed sewage to run in the packing, increasing the oxygen content in this part of the packing, and facilitating the aerobic nitrifying bacteria in the packing to nitrify and decompose the sewage; the sewage after nitrification continues to move in the first packing layer and the second packing layer. At this time, the particle size of the packing in contact with the sewage gradually decreases, the gap between the packings decreases, and it is difficult for air to enter. The microorganisms in this part are under anaerobic conditions, which is conducive to the reproduction of denitrifying bacteria, thereby denitrifying the sewage and improving the denitrification effect;When the water distribution filler layer is seriously clogged, the first water distribution mechanism stops operating, and the high-pressure water pump operates to quickly pump water into the interior of the first nozzle. Water is ejected upward from the interior of the first nozzle to backwash the water distribution filler layer from bottom to top. At the same time, air is ejected upward from the interior of the second nozzle, thereby cooperating with the water to flush the impurities deposited inside the water distribution filler layer upward into the interior of the discharge mechanism. At this time, the second water distribution mechanism operates to spray the sewage and the impurities flushed out from the interior of the discharge mechanism downward to the surface of the covering layer, and the sewage moves downward along the covering layer, the first filler layer and the second filler layer. The wetland body is transformed from a horizontal subsurface flow wetland into a vertical subsurface flow wetland. The wetland body continues to be used, while the distribution of microorganisms within the wetland body is changed. Microorganisms in some fillers switch from anaerobic motion to aerobic motion, degrading organic matter in the fillers and alleviating blockage. Impurities flushed from the water distribution filler layer remain on the surface of the covering layer, facilitating their absorption and decomposition by plant roots. By changing the direction of water flow through the first and second water distribution mechanisms, the wetland body's usage is changed, alleviating blockage within the wetland body and extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic structural diagram of a temperature difference-based artificial wetland anti-clogging device and method provided by the present invention;

[0022] Figure 2 for Figure 1 An enlarged schematic diagram of the structure at point A is shown;

[0023] Figure 3 for Figure 2 An enlarged schematic diagram of the structure at E is shown;

[0024] Figure 4 for Figure 1 An enlarged schematic diagram of the structure at point B is shown;

[0025] Figure 5 for Figure 1 An enlarged schematic diagram of the structure at position C is shown;

[0026] Figure 6 for Figure 5 The schematic diagram of the internal structure of the cylinder shown is a top view;

[0027] Figure 7 for Figure 1 An enlarged schematic diagram of the structure at D is shown;

[0028] Figure 8 for Figure 1 The schematic diagram of the monitoring organization structure shown;

[0029] Figure 9 This is a schematic diagram of the circuit structure provided by the present invention.

[0030] Numbers in the figure: 1. Wetland body, 11. Cover layer, 12. First packing layer, 13. Second packing layer, 14. Outlet packing layer, 15. Water distribution packing layer, 16. Anti-seepage layer, 2. Water collection mechanism, 21. Water collection well, 22. Water pump, 23. First collection pipe, 24. Water pump, 25. Second collection pipe, 3. Aeration and flushing mechanism, 31. High-pressure water pump, 32. Blower, 33. Connecting pipe, 34. First nozzle, 35. Second nozzle, 36. Fixed block, 37. Fixed rod, 38. Piston, 39. Magnetic block, 310. Spring Spring, 4, first water distribution mechanism, 41, water distribution well, 42, sedimentation tank, 43, fixed pipe, 44, water pump, 45, filter cartridge, 46, first water distribution pipe, 5, second water distribution mechanism, 51, water inlet pipe, 52, water outlet pipe, 53, second water distribution pipe, 54, nozzle, 6, solenoid valve, 7, discharging mechanism, 71, fan blade, 72, rotating shaft, 73, fixed box, 74, support pipe, 75, cylinder, 76, loading plate, 77, stirring rod, 8, monitoring mechanism, 81, first optical fiber, 82, second optical fiber, 83, temperature sensor, 9, soil layer. DETAILED DESCRIPTION

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0032] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 and Figure 9; An artificial wetland anti-clogging device based on temperature difference includes: a soil layer 9; a wetland body 1, wherein the wetland body 1 includes a covering layer 11, a first filler layer 12, a second filler layer 13, a water-discharging filler layer 14, a water-distributing filler layer 15 and an anti-seepage layer 16; the covering layer 11, the first filler layer 12, the second filler layer 13 and the anti-seepage layer 16 are laid in sequence from top to bottom inside the soil layer 9, the first filler layer 12 is mainly composed of crushed stone, and the second filler layer 13 is mainly composed of a sand and gravel layer; the water-discharging filler layer 14 and the water-distributing filler layer 15 are laid on both sides of the covering layer 11, the first filler layer 12 and the second filler layer 13 respectively. A packing layer 15; a water collecting mechanism 2, the water collecting mechanism 2 is connected to the water outlet packing layer 14 and the second packing layer 13; a first water distribution mechanism 4, the first water distribution mechanism 4 is installed on one side of the water distribution packing layer 15; an aeration and flushing mechanism 3, the aeration and flushing mechanism 3 includes a high-pressure water pump 31, a blower 32, a connecting pipe 33, a first nozzle 34, a second nozzle 35, a fixing block 36, a fixing rod 37, a piston 38, a magnetic block 39 and a spring 310, a plurality of the first nozzles 34 are installed at the bottom end of the water distribution packing layer 15, a plurality of the second nozzles 35 are installed obliquely at the bottom ends of the water distribution packing layer 15 and the second packing layer 13, the high-pressure water pump 31 is connected to the first nozzle 34 through multiple connecting pipes 33, and the blower 32 is connected to the second nozzle 35 through other connecting pipes 33; the top of the first nozzle 34 and the second nozzle 35 are installed with the fixing rod 37 with an "L"-shaped side wall, and the top of the fixing rod 37 is installed with the bulb-shaped fixing block 36; the interior of the fixing block 36 is slidably connected to the piston 38, and the piston 38 engages the first nozzle 34 and the second nozzle 35 with a hollow frustum inside the top; the spring 310 is installed inside the fixing block 36, and the bottom end of the spring 310 is fixedly connected to the piston 38; The magnetic block 39 is installed inside the fixed block 36, and the magnetic block 39 absorbs the iron piston 38 at the top; the discharging mechanism 7, the discharging mechanism 7 is connected to the top of the water distribution filling layer 15; the second water distribution mechanism 5, the second water distribution mechanism 5 is connected to the first water distribution mechanism 4 and the discharging mechanism 7; the monitoring mechanism 8, the monitoring mechanism 8 includes a first optical fiber 81, a second optical fiber 82 and a temperature sensor 83, the first filling layer 12 and the second filling layer 13 are installed with the first optical fiber 81 and the second optical fiber 82 crisscrossed inside, and multiple temperature sensors 83 are installed on the side walls of the first optical fiber 81 and the second optical fiber 82.

[0033] The first water distribution mechanism 4 includes a water distribution well 41, a sedimentation tank 42, a fixed pipe 43, a water pump 44, a filter cartridge 45 and a first water distribution pipe 46. The water distribution well 41 and the sedimentation tank 42 are arranged inside the soil layer 9, and the tops of the water distribution well 41 and the sedimentation tank 42 are connected to each other; the water pump 44 is installed inside the water distribution well 41, and the fixed pipe 43 connects the water pump 44 and the first water distribution pipe 46, and a plurality of filter cartridges 45 are installed on the side wall of the first water distribution pipe 46; the first water distribution pipe 46 and the filter cartridge 45 are located inside the water distribution filler layer 15, so that when sewage enters the sedimentation tank After entering the sedimentation tank 42, the sewage is precipitated inside the sedimentation tank 42 to remove impurities in the sewage, and the precipitated sewage enters the water distribution well 41. The water pump 44 operates to make the sewage inside the water distribution well 41 pass through the fixed pipe 43 and the first water distribution pipe 46 into the water distribution filler layer 15; in the vertical direction, the spacing between adjacent filter cartridges 45 gradually increases along the top of the first water distribution pipe 46 toward the bottom of the first water distribution pipe 46, so that more sewage can enter the upper layer of the water distribution filler layer 15, which facilitates the water distribution filler layer 15 to filter the sewage.

[0034] The discharging mechanism 7 includes a fan blade 71, a rotating shaft 72, a fixed box 73, a support tube 74, a cylinder 75, a loading plate 76 and a stirring rod 77. The fixed box 73 is installed on the top of the water distribution filler layer 15, the support tube 74 is installed inside the fixed box 73, and the side wall of the support tube 74 is installed with the first water distribution pipe 46; the interior of the support tube 74 is rotatably connected to the rotating shaft 72 and the loading plate 76, and the side wall of the rotating shaft 72 is installed with the stirring rod 77, the fan blade 71 and the spiral loading plate 76; the rotating shaft 72 and the fan blade 71 are rotatably connected to the interior of the cylinder 75, and the side walls of the cylinder 75 are respectively installed with the water inlet pipe 51 and the Outlet pipe 52; the second water distribution mechanism 5 includes a water inlet pipe 51, an outlet pipe 52, a second water distribution pipe 53 and a nozzle 54, the water pump 44 is connected to the water inlet pipe 51, and the water inlet pipe 51 is connected to the outlet pipe 52; the outlet pipe 52 is obliquely connected to the second water distribution pipe 53, and a plurality of the nozzles 54 are installed on the side wall of the second water distribution pipe 53. When the water distribution filler layer 15 is backflushed, the sewage backflushed from the inside of the water distribution filler layer 15 enters the interior of the fixed box 73. At this time, the water pump 44 operates to allow water to enter the interior of the cylinder 75 through the water inlet pipe 51, pushing the fan blades 71 and the rotating shaft 72 inside the cylinder 75 to rotate counterclockwise (as shown in the attached figure). Figure 5 and attached Figure 6As shown); the rotating shaft 72 drives the spiral loading plate 76 to rotate counterclockwise inside the support tube 74, thereby extracting the sewage inside the fixed box 73 to move upward into the inside of the second water distribution pipe 53, and the water inside the cylinder 75 enters the inside of the second water distribution pipe 53 through the outlet pipe 52, so that the sewage moves inside the second water distribution pipe 53 and is sprayed to the surface of the covering layer 11 through the nozzle 54; in the horizontal direction, the spacing between adjacent nozzles 54 gradually decreases along the two ends of the covering layer 11 toward the center of the covering layer 11; in order to make more sewage spray to the center of the covering layer 11, the particle size of the first packing layer 12 and the second packing layer 13 below the center of the covering layer 11 is appropriate, so that the first packing layer 12 and the second packing layer 13 can filter and purify the sewage.

[0035] The water collection mechanism 2 includes a water collection well 21, a water pump 22, a first collecting pipe 23, a water pumping pipe 24 and a second collecting pipe 25. The water collection well 21 is arranged inside the soil layer 9, the water pump 22 and the water pumping pipe 24 are installed inside the water collection well 21, and the water pumping pipe 24 is connected to the water pump 22; the first collecting pipe 23 and the second collecting pipe 25 are installed on the side wall of the water collection well 21, the first collecting pipe 23 is connected to the inside of the water outlet filler layer 14, and the second collecting pipe 25 is connected to the second filler layer 14. At the bottom of the material layer 13, when a horizontal submerged flow wetland is used, the purified sewage is gathered inside the outlet filler layer 14, and the water inside the outlet filler layer 14 enters the water collection well 21 through the first collecting pipe 23; when a vertical submerged flow wetland is used, the purified sewage remains at the bottom of the second filler layer 13, and the water flows into the water collection well 21 through the second collecting pipe 25; the water pump 22 is operated to discharge the accumulated water inside the water collection well 21 through the water pumping pipe 24.

[0036] Solenoid valves 6 are respectively installed on the side walls of the first collecting pipe 23, the second collecting pipe 25, the fixed pipe 43, the water inlet pipe 51 and the second water distribution pipe 53, in order to control the opening and closing of the first collecting pipe 23, the second collecting pipe 25, the fixed pipe 43, the water inlet pipe 51 and the second water distribution pipe 53 by operating the solenoid valve 6.

[0037] The particle size of the particles inside the first packing layer 12 gradually decreases along the water distribution packing layer 15 toward the water outlet packing layer 14, and the particle size of the particles inside the second packing layer 13 gradually decreases along the water distribution packing layer 15 toward the water outlet packing layer 14; in order to facilitate the microorganisms in the packing to first carry out nitrification reaction and then denitrification reaction, thereby improving the denitrification effect; the particle size of the particles inside the water distribution packing layer 15 is larger than the particle size of the particles inside the first packing layer 12, in order to facilitate the sewage to quickly pass through the water distribution packing layer 15 into the interior of the first packing layer 12.

[0038] A method for using a temperature-difference-based artificial wetland anti-clogging device comprises the following steps:

[0039] Step 1: When treating sewage, after the sewage enters the sedimentation tank 42, the sewage is precipitated inside the sedimentation tank 42 to remove impurities in the sewage. The precipitated sewage enters the water distribution well 41, and the industrial computer operates to open the water pump 44 and the fixed pipe 43 and the electromagnetic valve 6 on the side wall of the first collecting pipe 23; the water pump 44 operates to make the sewage inside the water distribution well 41 pass through the fixed pipe 43 and the first water distribution pipe 46 into the water distribution filler layer 15; the water distribution filler layer 15 filters the sewage, and most of the solids in the sewage are removed. The particles remain inside the water distribution packing layer 15, and the sewage after the initial filtration passes through the first packing layer 12 and the second packing layer 13 in sequence. The microorganisms in the first packing layer 12 and the second packing layer 13 decompose the harmful substances in the sewage. At the same time, the plant roots inside the first packing layer 12 and the second packing layer 13 purify the sewage. The treated sewage enters the outlet packing layer 14 and the inside of the water collection well 21; the water pump 22 operates to discharge the purified water inside the water collection well 21 through the water pumping pipe 24;

[0040] Step 2: When the sewage enters the water distribution filler layer 15, the sewage moves downward inside the water distribution filler layer 15 under the action of gravity, so that most of the sewage and the impurities it carries are deposited at the bottom of the water distribution filler layer 15; when the sewage is about to flow out of the water distribution filler layer 15, the blower 32 is operated to blow air into the second nozzle 35, and the air pushes the piston 38 inside the second nozzle 35 to move upward inside the fixed block 36 to compress the spring 310, and at the same time, the piston 38 operates to resist the suction Attach the magnetic block 39 and fix the piston 38, thereby opening the second nozzle 35 and allowing air to be ejected from the inside of the second nozzle 35. The side wall of the fixing block 36 is in the shape of a bulb. When the air is ejected, it moves upward along the side wall of the fixing block 36, increasing the contact area between the air and the sewage, increasing the oxygen content inside the water distribution filler layer 15, and reducing the deposition of organic matter in the water distribution filler layer 15; the height of the second nozzle 35 gradually increases along the direction of the water distribution filler layer 15 toward the second filler layer 13, so that the air ejected from the second nozzle 35 The air contacts the sewage at different positions, so that the air contacts the sewage evenly, increasing the oxygen content in the sewage; the size of the particles inside the first packing layer 12 gradually decreases along the water distribution packing layer 15 toward the water outlet packing layer 14, and the size of the particles inside the second packing layer 13 gradually decreases along the water distribution packing layer 15 toward the water outlet packing layer 14; when the sewage after being mixed with air contacts the first packing layer 12 and the second packing layer 13, due to the large particle size of the particles in this part of the first packing layer 12 and the second packing layer 13, the spacing between the packing particles is large, which facilitates the air-mixed sewage to run in the packing, increases the oxygen content in this part of the packing, and facilitates the aerobic nitrifying bacteria in the packing to nitrify and decompose the sewage; the nitrified sewage continues to move in the first packing layer 12 and the second packing layer 13. At this time, the particle size of the packing in contact with the sewage gradually decreases, the gap between the packings decreases, and air is difficult to enter. The microorganisms in this part are under anaerobic conditions, which is conducive to the reproduction of denitrifying bacteria, thereby denitrifying the sewage and improving the denitrification effect;

[0041] Step 3: When the sewage penetrates the interior of the water distribution packing layer 15 and enters the first packing layer 12 and the second packing layer 13, the first optical fiber 81 and the second optical fiber 82 are close to the water distribution packing layer 15. When the sewage is in operation, it flows through the side walls of the first optical fiber 81 and the second optical fiber 82. The first optical fiber 81 and the second optical fiber 82 are equipped with multiple temperature sensors 83. The first optical fiber 81 and the second optical fiber 82 are crisscrossed for monitoring (as shown in the attached figure). Figure 8As shown), the temperature sensor 83 monitors the temperature of each position of the first packing layer 12 and the second packing layer 13; the temperature sensor 83 transmits the monitored information to the industrial computer through the first optical fiber 81 and the second optical fiber 82, and the data processing and collection module inside the industrial computer processes the information and stores the analyzed data through the storage module. When a certain position of the water distribution packing layer 15 is blocked, the sewage cannot pass through or penetrate through the position, so that the sewage flow state at the position is basically in a static state. Due to the stagnation of the water body, a temperature difference may occur between the blocked position and the surrounding area with smooth water flow. In this part, the temperature sensor 83 is in an abnormal state. Through the position of the temperature sensor 83, the industrial computer operates the processing information to determine the blocked position of the water distribution packing layer 15, and by observing the number of abnormalities of the temperature sensor 83, the severity of the blockage of the water distribution packing layer 15 can be determined.

[0042] Step 4: When the industrial computer determines that the water distribution filler layer 15 is seriously clogged, the first water distribution mechanism 4 stops operating, the industrial computer turns on the high-pressure water pump 31 and the blower 32, closes the fixed pipe 43 and the solenoid valve 6 on the side wall of the first collecting pipe 23, and opens the water inlet pipe 51 and the solenoid valve 6 on the side wall of the second collecting pipe 25; the high-pressure water pump 31 operates to quickly draw water into the interior of the first nozzle 34, and the water is sprayed upward from the interior of the first nozzle 34 to backwash the water distribution filler layer 15 from bottom to top, and at the same time, the air is sprayed upward from the interior of the second nozzle 35, thereby cooperating with the water to flush the impurities deposited in the water distribution filler layer 15 upward into the interior of the fixed box 73. At this time, the water pump 44 operates to allow water to enter the interior of the cylinder 75 through the water inlet pipe 51, pushing the fan blades 71 and The rotating shaft 72 rotates counterclockwise; the rotating shaft 72 drives the spiral loading plate 76 to rotate counterclockwise inside the support tube 74, thereby extracting the sewage inside the fixed box 73 to move upward into the inside of the second water distribution pipe 53, and the water inside the cylinder 75 enters the inside of the second water distribution pipe 53 through the outlet pipe 52, so that the sewage moves inside the second water distribution pipe 53 and is sprayed toward the surface of the covering layer 11 through the nozzle 54; in the horizontal direction, the spacing between adjacent nozzles 54 gradually decreases along the two ends of the covering layer 11 toward the center of the covering layer 11, so that more sewage is sprayed toward the center of the covering layer 11, and the particle size of the first packing layer 12 and the second packing layer 13 below the center of the covering layer 11 is appropriate, which facilitates the first packing layer 12 and the second packing layer 13 to filter and purify sewage. After being sprayed out from the nozzle 54, the sewage moves downward along the covering layer 11, the first filler layer 12 and the second filler layer 13, and the wetland body 1 is changed from a horizontal submerged flow wetland to a vertical submerged flow wetland. The microorganisms inside the wetland body 1 can be used immediately without the need for re-cultivation, so that the wetland body 1 can continue to be put into use. At the same time, the distribution position of the microorganisms inside the wetland body 1 is changed, and the microorganisms in some fillers are changed from anaerobic movement to aerobic movement, degrading the organic matter in the fillers and alleviating blockage; and the impurities flushed out of the water distribution filler layer 15 remain on the surface of the covering layer 11, which is convenient for plant roots to absorb and decompose the impurities; the water flow direction is changed by the first water distribution mechanism 4 and the second water distribution mechanism 5, and the use mode of the wetland body 1 is changed, thereby alleviating the blockage inside the wetland body 1 and extending the use time of the wetland body 1. When the water distribution filler layer 15 is flushed, the piston closes the nozzle to prevent debris from entering the interior of the nozzle and causing blockage; and after the flushing is completed, the artificial wetland 1 is kept in the vertical subsurface flow wetland state for one week, and then the artificial wetland 1 is changed to the horizontal artificial wetland state.

[0043] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A temperature difference-based artificial wetland anti-clogging device, characterized in that: include: soil layer (9); A wetland body (1), the wetland body (1) comprising a covering layer (11), a first filler layer (12), a second filler layer (13), a water-distributing filler layer (14), a water-distributing filler layer (15) and an anti-seepage layer (16); the covering layer (11), the first filler layer (12), the second filler layer (13) and the anti-seepage layer (16) are laid in sequence from top to bottom inside the soil layer (9), and the water-distributing filler layer (14) and the water-distributing filler layer (15) are laid on both sides of the covering layer (11), the first filler layer (12) and the second filler layer (13); A water collecting mechanism (2), the water collecting mechanism (2) being in communication with the water outlet filler layer (14) and the second filler layer (13); A first water distribution mechanism (4), the first water distribution mechanism (4) being installed on one side of the water distribution filler layer (15); An aeration and flushing mechanism (3), the aeration and flushing mechanism (3) comprising a high-pressure water pump (31), a blower (32), a connecting pipe (33), a first nozzle (34), a second nozzle (35), a fixing block (36), a fixing rod (37), a piston (38), a magnetic block (39) and a spring (310), a plurality of the first nozzles (34) being installed at the bottom end of the water distribution packing layer (15), a plurality of the second nozzles (35) being installed obliquely at the bottom ends of the water distribution packing layer (15) and the second packing layer (13), the high-pressure water pump (31) being connected to the first nozzle (34) through the plurality of connecting pipes (33), and the blower (32) being connected to the second nozzle through the other connecting pipes (33). (35); the fixing rod (37) with an L-shaped side wall is installed at the top of the first nozzle (34) and the second nozzle (35), and the bulb-shaped fixing block (36) is installed at the top of the fixing rod (37); the interior of the fixing block (36) is slidably connected to the piston (38), and the piston (38) engages the first nozzle (34) and the second nozzle (35) with a hollow truncated cone shape at the top; the spring (310) is installed inside the fixing block (36), and the bottom end of the spring (310) is fixedly connected to the piston (38); the magnetic block (39) is installed inside the fixing block (36), and the magnetic block (39) adsorbs the iron piston (38) at the top; a discharge mechanism (7), the discharge mechanism (7) being connected to the top end of the water distribution filler layer (15); a second water distribution mechanism (5), the second water distribution mechanism (5) being connected to the first water distribution mechanism (4) and the discharge mechanism (7); A monitoring mechanism (8), the monitoring mechanism (8) comprising a first optical fiber (81), a second optical fiber (82) and a temperature sensor (83), the first optical fiber (81) and the second optical fiber (82) being installed in a crisscross pattern inside the first packing layer (12) and the second packing layer (13), and a plurality of the temperature sensors (83) being installed on the side walls of the first optical fiber (81) and the second optical fiber (82).

2. The artificial wetland anti-clogging device based on temperature difference according to claim 1 is characterized in that: The first water distribution mechanism (4) comprises a water distribution well (41), a sedimentation tank (42), a fixed pipe (43), a water pump (44), a filter cartridge (45) and a first water distribution pipe (46); the water distribution well (41) and the sedimentation tank (42) are arranged inside the soil layer (9); the top ends of the water distribution well (41) and the sedimentation tank (42) are connected to each other; the water pump (44) is installed inside the water distribution well (41); the fixed pipe (43) connects the water pump (44) and the first water distribution pipe (46); and a plurality of filter cartridges (45) are installed on the side wall of the first water distribution pipe (46).

3. The artificial wetland anti-clogging device based on temperature difference according to claim 2 is characterized in that: The first water distribution pipe (46) and the filter cartridge (45) are located inside the water distribution filler layer (15), and in the vertical direction, the spacing between adjacent filter cartridges (45) gradually increases along the top end of the first water distribution pipe (46) toward the bottom end of the first water distribution pipe (46).

4. The artificial wetland anti-clogging device based on temperature difference according to claim 2, characterized in that: The second water distribution mechanism (5) comprises a water inlet pipe (51), a water outlet pipe (52), a second water distribution pipe (53) and a nozzle (54); the water pump (44) is connected to the water inlet pipe (51), and the water inlet pipe (51) is connected to the water outlet pipe (52); the water outlet pipe (52) is obliquely connected to the second water distribution pipe (53), and a plurality of nozzles (54) are installed on the side wall of the second water distribution pipe (53); in the horizontal direction, the spacing between adjacent nozzles (54) gradually decreases along the two ends of the covering layer (11) toward the center of the covering layer (11).

5. The artificial wetland anti-clogging device based on temperature difference according to claim 4 is characterized in that: The discharging mechanism (7) includes a fan blade (71), a rotating shaft (72), a fixed box (73), a support pipe (74), a cylinder (75), a loading plate (76) and a stirring rod (77); the fixed box (73) is installed on the top of the water distribution filler layer (15); the support pipe (74) is installed inside the fixed box (73), and the first water distribution pipe (46) is installed on the side wall of the support pipe (74); the interior of the support pipe (74) is rotatably connected to the rotating shaft (72) and the loading plate (76), and the stirring rod (77), the fan blade (71) and the spiral loading plate (76) are installed on the side wall of the rotating shaft (72); the rotating shaft (72) and the fan blade (71) are rotatably connected to the interior of the cylinder (75), and the water inlet pipe (51) and the water outlet pipe (52) are respectively installed on the side wall of the cylinder (75).

6. The temperature difference-based artificial wetland anti-clogging device according to claim 5, characterized in that: The water collection mechanism (2) comprises a water collection well (21), a water pump (22), a first collecting pipe (23), a water pumping pipe (24) and a second collecting pipe (25); the water collection well (21) is arranged inside the soil layer (9); the water pump (22) and the water pumping pipe (24) are installed inside the water collection well (21), and the water pumping pipe (24) is connected to the water pump (22); the first collecting pipe (23) and the second collecting pipe (25) are installed on the side wall of the water collection well (21); the first collecting pipe (23) is connected to the inside of the water outlet filler layer (14), and the second collecting pipe (25) is connected to the bottom end of the second filler layer (13).

7. The artificial wetland anti-clogging device based on temperature difference according to claim 6, characterized in that: Solenoid valves (6) are respectively installed on the side walls of the first collecting pipe (23), the second collecting pipe (25), the fixed pipe (43), the water inlet pipe (51), and the second water distribution pipe (53).

8. The temperature difference-based artificial wetland anti-clogging device according to claim 6, characterized in that: The size of the particles inside the first packing layer (12) gradually decreases along the direction from the water distribution packing layer (15) to the water outlet packing layer (14), and the size of the particles inside the second packing layer (13) gradually decreases along the direction from the water distribution packing layer (15) to the water outlet packing layer (14); the size of the particles inside the water distribution packing layer (15) is larger than the size of the particles inside the first packing layer (12).

9. The method for using the temperature difference-based artificial wetland anti-clogging device according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1: When treating sewage, the first water distribution mechanism (4) operates to transport water into the interior of the water distribution filler layer (15), the water distribution filler layer (15) filters the sewage, and most of the solid particles in the sewage remain in the interior of the water distribution filler layer (15). The sewage after the initial filtration passes through the first filler layer (12) and the second filler layer (13) in sequence, and the microorganisms in the first filler layer (12) and the second filler layer (13) decompose the harmful substances in the sewage. At the same time, the plant roots in the first filler layer (12) and the second filler layer (13) purify the sewage. The treated sewage enters the outlet filler layer (14) and the interior of the water collection mechanism (2); Step 2: After the sewage enters the water distribution filler layer (15), the sewage moves downward inside the water distribution filler layer (15) under the action of gravity, so that most of the sewage and the impurities it carries are deposited at the bottom of the water distribution filler layer (15); when the sewage is about to flow out from the water distribution filler layer (15), the blower (32) is operated to blow air into the second nozzle (35), and the air pushes the piston (38) inside the second nozzle (35) to move upward inside the fixed block (36) to compress the spring (310), and at the same time, the piston (38) moves upward. The magnetic block (39) is attracted by the magnetic block (39) to fix the piston (38), thereby opening the second nozzle (35) and allowing air to be ejected from the inside of the second nozzle (35). The side wall of the fixed block (36) is in the shape of a bulb. When the air is ejected, it moves upward along the side wall of the fixed block (36), thereby increasing the contact area between the air and the sewage, improving the oxygen content inside the water distribution packing layer (15), and reducing the deposition of organic matter in the water distribution packing layer (15); the height of the second nozzle (35) gradually increases along the direction of the water distribution packing layer (15) toward the second packing layer (13), thereby making the air from the second packing layer (13) The air ejected from the two nozzles (35) contacts the sewage at different positions, so that the air contacts the sewage evenly, thereby increasing the oxygen content in the sewage; the size of the particles inside the first packing layer (12) gradually decreases along the direction from the water distribution packing layer (15) to the water outlet packing layer (14), and the size of the particles inside the second packing layer (13) gradually decreases along the direction from the water distribution packing layer (15) to the water outlet packing layer (14); when the sewage after being mixed with the air contacts the first packing layer (12) and the second packing layer (13), due to the first packing layer in this part The particle size of the first filler layer (12) and the second filler layer (13) is large, and the spacing between the filler particles is large, which facilitates the movement of air-mixed sewage in the filler, increases the oxygen content in this part of the filler, and facilitates the aerobic nitrifying bacteria in the filler to nitrify and decompose the sewage; the nitrified sewage continues to move in the first filler layer (12) and the second filler layer (13), at this time, the filler particle size in contact with the sewage gradually decreases, the gap between the fillers decreases, and air is difficult to enter. The microorganisms in this part are under anaerobic conditions, which is conducive to the reproduction of denitrifying bacteria, thereby performing a denitrification process on the sewage and improving the denitrification effect; Step 3: When sewage passes through the interior of the water distribution packing layer (15) and enters the first packing layer (12) and the second packing layer (13), the first optical fiber (81) and the second optical fiber (82) are close to the water distribution packing layer (15), and sewage flows through the side walls of the first optical fiber (81) and the second optical fiber (82) during operation. The first optical fiber (81) and the second optical fiber (82) are installed with a plurality of the temperature sensors (83). The first optical fiber (81) and the second optical fiber (82) are monitored in a crisscross manner, and the temperature sensors (83) monitor the temperature of each position of the first packing layer (12) and the second packing layer (13); when a position of the water distribution packing layer (15) is blocked, the sewage cannot pass through or penetrate the position, so that the sewage flow state at the position is basically in a static state. Due to the stagnation of the water body, a temperature difference may occur between the blocked position and the surrounding area with smooth water flow. The temperature sensor (83) is in an abnormal state, and the severity of the blockage of the water distribution packing layer (15) is judged; Step 4: When the water distribution filler layer (15) is seriously clogged, the first water distribution mechanism (4) stops operating, and the high-pressure water pump (31) operates to quickly pump water into the interior of the first nozzle (34). Water is ejected upward from the interior of the first nozzle (34) to backwash the water distribution filler layer (15) from bottom to top. At the same time, air is ejected upward from the interior of the second nozzle (35), thereby cooperating with water to flush the impurities deposited in the water distribution filler layer (15) upward into the interior of the discharge mechanism (7). At this time, the second water distribution mechanism (5) operates to cause the sewage and the impurities flushed out from the interior of the discharge mechanism (7) to be sprayed downward toward the surface of the covering layer (11). The sewage flows along the covering layer (11) and the first filler layer (12). The second filler layer (13) moves downward, and the wetland body (1) is changed from a horizontal subsurface flow wetland to a vertical subsurface flow wetland. The wetland body (1) continues to be used, and at the same time, the distribution position of microorganisms inside the wetland body (1) is changed. The microorganisms in some fillers change from anaerobic movement to aerobic movement, degrading organic matter in the fillers and alleviating blockage; and the impurities flushed out of the water distribution filler layer (15) remain on the surface of the covering layer (11), making it easier for plant roots to absorb and decompose the impurities; the water flow direction is changed by the first water distribution mechanism (4) and the second water distribution mechanism (5), and the use mode of the wetland body (1) is changed, thereby alleviating the blockage inside the wetland body (1) and extending the use time of the wetland body (1).

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