Aquaculture water circulation treatment system

Abstract

The present invention relates to an aquaculture water circulation treatment system, comprising a filtering mechanism, a biochemical treatment mechanism and a disinfection mechanism which are arranged in sequence, wherein the filtering mechanism comprises a horizontally arranged cylinder, a filter plate is arranged in the cylinder, the filter plate is slidably matched with the inner wall of the cylinder, and the filter plate is connected to a pressure mechanism for driving the filter plate to slide; a detachable first end plate and a second end plate are arranged at both ends of the cylinder, respectively, the distance from the filter plate to the first end plate is smaller than the distance from the filter plate to the second end plate, a water outlet cavity is arranged between the filter plate and the first end plate, a water outlet is arranged at the bottom of the water outlet cavity, and the water outlet is connected to the biochemical treatment mechanism; a water inlet cavity is arranged between the filter plate and the second end plate, and a water inlet is arranged on the top wall of one end of the water inlet cavity close to the filter plate. In the present invention, while cleaning or replacing the filter plate, solid impurities inside the filtering device can be cleaned up, and the solid impurities can also be dehydrated, which reduces the maintenance difficulty of the filtering mechanism and improves the maintenance efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of water treatment, in particular to an aquaculture water circulation treatment system. Background Art

[0002] Aquaculture water contains a lot of feed residues, aquatic feces and drug residues, which leads to the accumulation of large amounts of organic matter, nitrogen, phosphorus, ammonia, etc. in the aquaculture water, and the degree of eutrophication of the water is high. Therefore, it is best to continuously purify the aquaculture water during the aquaculture process to improve the water quality of the aquaculture water and ensure the safety and health of the aquatic products.

[0003] There are many existing aquaculture water treatment facilities, such as CN202211642592.8 discloses a modular assembled aquaculture tailwater treatment system and method, CN202323088079.1 discloses an aquaculture tailwater treatment pool group, etc. The basic treatment process is usually to remove solid impurities in the water by filtering or precipitation, and then remove ammonia nitrogen by biochemical treatment, remove residual organic matter (such as antibiotics, etc.) by oxidation and decomposition, and finally sterilize. Among them, the efficiency of precipitation to remove solid impurities is low, and the sedimentation tank occupies a large area, so filtering is usually used to remove solid impurities, but the filter material used for filtering, such as sand and gravel particles or filter plates, is easy to clog, and needs to be cleaned or replaced frequently, which is cumbersome to operate, and the solid impurities filtered out need to be cleaned frequently, which is a large workload, and the cleaned solid impurities need to be dehydrated by means of filter pressing, etc., which has many processes and low efficiency. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an aquaculture water circulation treatment system, which can more conveniently replace the filter plate of the filtering equipment, facilitate the cleaning of solid impurities inside the filtering mechanism, and dehydrate the solid impurities, thereby improving the treatment efficiency of the solid impurities.

[0005] In order to solve the above problems, the technical solution adopted by the present invention is: an aquaculture water circulation treatment system, comprising a filtering mechanism, a biochemical treatment mechanism and a disinfection mechanism arranged in sequence,

[0006] The filter mechanism includes a horizontally arranged cylinder, a filter plate is arranged inside the cylinder, the edge of the filter plate is slidably matched with the inner wall of the cylinder, and the filter plate is connected to a pressure mechanism that drives the filter plate to slide; a detachable first end plate and a second end plate are respectively arranged at both ends of the cylinder, the distance from the filter plate to the first end plate is smaller than the distance from the filter plate to the second end plate, a water outlet cavity is arranged between the filter plate and the first end plate, a water outlet is arranged at the bottom of the water outlet cavity, and the water outlet is connected to a biochemical treatment mechanism; a water inlet cavity is arranged between the filter plate and the second end plate, and a water inlet is arranged on the top wall of one end of the water inlet cavity close to the filter plate.

[0007] Furthermore, the second end plate is provided with a mud discharge port, and the mud discharge port is provided with a detachable mud discharge cover.

[0008] Furthermore, the biochemical treatment mechanism includes a tank body, in which an anoxic zone, an anaerobic zone and an aerobic zone are sequentially arranged, and the anoxic zone is connected to the water outlet; the anoxic zone, the anaerobic zone and the aerobic zone are separated by a vertical partition wall, and the partition wall includes a first wall and a second wall parallel to each other, and the first wall and the second wall are provided with a plurality of water holes, and a filling cavity is provided between the first wall and the second wall, and a detachable filter material mesh box is provided in the filling cavity, and a granular filter material is provided inside the filter material mesh box; fillers are provided in the anoxic zone, the anaerobic zone and the aerobic zone; an aeration mechanism is provided at the bottom of the aerobic zone.

[0009] Furthermore, the pool body is arranged around the breeding pond, the water inlet of the water inlet cavity is connected to the breeding pond through a lifting pipe, and a first lifting pump is arranged on the lifting pipe; the disinfection mechanism is connected to the breeding pond.

[0010] Furthermore, the anoxic zone, anaerobic zone and aerobic zone are each provided with a mud discharge mechanism, the mud discharge mechanism comprising a vertically arranged scraper, the bottom edge of the scraper contacts the bottom wall of the anoxic zone, anaerobic zone or aerobic zone, and the two side edges of the scraper contact the side walls of the anoxic zone, anaerobic zone or aerobic zone; a plurality of horizontal guide rods are provided at the bottom of the anoxic zone, anaerobic zone and aerobic zone, the guide rods penetrate the scraper and slide with the scraper; the scraper is connected to a mud scraping drive mechanism for driving the scraper to move; mud discharge pumps are provided at the bottom of the anoxic zone, anaerobic zone and aerobic zone at both ends of the guide rods; a flexible mud barrier cloth is provided above the scraper, the two side walls of the anoxic zone, anaerobic zone and aerobic zone are respectively provided with a horizontal first pressure roller and a second pressure roller, the two side edges of the mud barrier cloth are respectively pressed by the first pressure roller and the second pressure roller, and the two side edges of the mud barrier cloth are connected with a flexible first pull rope, and the first pull rope is connected with a first retracting and unwinding motor.

[0011] Furthermore, the mud scraping drive mechanism includes a second pull rope and a third pull rope, and guide wheels are provided on the side walls of the anoxic zone, anaerobic zone and aerobic zone above both ends of the guide rod. The second pull rope and the third pull rope are respectively matched with the guide wheels and connected to the second retracting and unwinding motor.

[0012] Furthermore, the aeration mechanism is a microporous aeration disk, and the microporous aeration disk is embedded in the bottom wall of the aerobic zone.

[0013] Furthermore, the particle filter material is sand and gravel particles with a particle size of 5 to 12 mm.

[0014] Furthermore, the disinfection mechanism includes a disinfection cabinet, and a plurality of filler floats are arranged inside the disinfection cabinet; the inner cavity of the disinfection cabinet is divided into a first cavity and a second cavity by a vertical partition, the bottoms of the first cavity and the second cavity are connected, the bottom of the first cavity is connected to an ozone supply mechanism, the top of the first cavity is connected to the top of the aerobic zone through a connecting pipe, a second lifting pump is arranged on the connecting pipe, and a drain pipe is arranged at the top of the second cavity.

[0015] Furthermore, the filler float includes a mesh shell layer, a filler layer and a hollow ball arranged in sequence from the outside to the inside, a vertical rotating shaft is arranged at the bottom of the disinfection cabinet, a mud removal motor is connected to the lower end of the rotating shaft, and a plurality of flexible knocking strips are arranged at the upper end of the rotating shaft.

[0016] The beneficial effects of the present invention are as follows: the aquaculture water enters the water inlet chamber through the water inlet, and then enters the drainage chamber after passing through the filter plate. The filter plate intercepts solid impurities such as feed residues and feces in the water, so that the solid impurities remain in the water inlet chamber. When the solid impurities in the water inlet chamber reach a certain amount, the water inlet stops entering the water, and the filter plate is pushed toward the second end plate by the pressure mechanism. At this time, the filter plate pushes the solid impurities in the water inlet chamber to move. As the space shrinks, the solid impurities are gradually squeezed between the filter plate and the second end plate, and the water in the solid impurities is continuously squeezed out and flows through the filter holes on the filter plate to the water outlet chamber, thereby achieving the dehydration of the solid impurities. When the pressure on the solid impurities reaches the set value, the second end plate can be removed from the cylinder, and then the pressure mechanism pushes the dehydrated solid impurities and the filter plate as a whole to move outside the cylinder, so that dry solid impurities can be obtained, and at the same time, the filter plate can be easily replaced or the blocked filter holes can be cleaned.

[0017] It can be seen that in the present invention, while cleaning or replacing the filter plate, the solid impurities inside the filter device can be cleaned and the solid impurities can be dehydrated, which reduces the maintenance difficulty of the filter mechanism and improves the maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a top view schematic diagram of the present invention;

[0019] Figure 2 is a cross-sectional schematic diagram of a filtering mechanism;

[0020] Figure 3 yes Figure 1 Schematic cross-sectional view of AA in the figure;

[0021] Figure 4 yes Figure 3 A schematic cross-sectional view of the middle BB;

[0022] Figure 5 yes Figure 3 A magnified schematic diagram of part C;

[0023] Figure 6 is a cross-sectional schematic diagram of a disinfection mechanism;

[0024] Figure 7 It is a schematic diagram of the packing float;

[0025] Figure numerals: 1—filter mechanism; 11—cylinder; 12—filter plate; 13—first end plate; 14—second end plate; 15—pressure mechanism; 16—water outlet chamber; 17—water inlet chamber; 18—mud outlet; 19—mud cover; 2—biochemical treatment mechanism; 21—tank body; 22—anoxic zone; 23—anaerobic zone; 24—aerobic zone; 25—partition wall; 26—water hole; 27—filter material box; 211—aeration mechanism; 212—scraper; 213—guide rod; 214—mud pump; 215—mud retaining cloth; 216—first pressure roller; 217—second pressure roller; 218 —first pull rope; 219—first reel-up and reel-down motor; 220—second pull rope; 221—third pull rope; 222—guide wheel; 223—second reel-up and reel-down motor; 3—disinfection mechanism; 31—disinfection cabinet; 32—filling float; 321—net shell layer; 322—filling layer; 323—hollow ball; 33—partition; 34—first cavity; 35—second cavity; 36—ozone supply mechanism; 37—second lifting pump; 38—drain pipe; 39—rotating shaft; 311—mud removal motor; 312—beating bar; 5—breeding pond; 51—lifting pipe; 52—first lifting pump. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0027] The aquaculture water circulation treatment system of the present invention is as follows: Figure 1 As shown, it includes a filtering mechanism 1, a biochemical treatment mechanism 2 and a disinfection mechanism 3 which are arranged in sequence.

[0028] The filtering mechanism 1 is used to remove solid impurities in the aquaculture water, including feed residues, aquatic feces, etc., to prevent the feed residues, aquatic feces, etc. from staying for a long time and causing eutrophication of the water body. The biochemical treatment mechanism 2 is used to perform biochemical treatment on the aquaculture water to remove ammonia nitrogen, organic matter, etc. in the water. The disinfection mechanism 3 is used to disinfect and sterilize the aquaculture water to improve the safety of aquatic products.

[0029] Filter mechanism 1 Figure 2 As shown, it specifically includes a horizontally arranged cylinder 11, which is a round or square cylinder, made of stainless steel or other high-strength materials, and a filter plate 12 is arranged inside the cylinder 11. The filter plate 12 is made of a metal plate of a certain thickness, such as a stainless steel plate with a thickness of 1 to 2 cm. A large number of tiny filter holes are arranged on the filter plate 12, or a plurality of through holes with larger apertures are arranged on the filter plate 12, and a filter cloth is arranged on the side of the filter plate 12. The edge of the filter plate 12 is slidably matched with the inner wall of the cylinder 11 to prevent solid impurities from passing between the edge of the filter plate 12 and the inner wall of the cylinder 11. The filter plate 12 is connected to a pressure mechanism 15 for driving the filter plate 12 to slide, and the pressure mechanism 15 can be a hydraulic cylinder, the cylinder body of the hydraulic cylinder can be fixed outside the cylinder 11 and pass through the first end plate 13, and the piston rod of the hydraulic cylinder is located inside the cylinder 11 and is detachably connected to the filter plate 12. The pressure mechanism 15 can drive the filter plate 12 to move along the axial direction of the cylinder 11, and provide pressure to squeeze the solid impurities inside the cylinder 11 to achieve dehydration of the solid impurities. The two ends of the cylinder 11 are respectively provided with a detachable first end plate 13 and a second end plate 14, which can be installed at the two ends of the cylinder 11 by a plurality of screws. In order to ensure the sealing performance, a sealing gasket can be provided inside the first end plate 13 and the second end plate 14. A water outlet cavity 16 is provided between the filter plate 12 and the first end plate 13, and a water outlet is provided at the bottom of the water outlet cavity 16, which is connected to the biochemical treatment mechanism 2. A water inlet cavity 17 is provided between the filter plate 12 and the second end plate 14, and a water inlet is provided on the top wall of one end of the water inlet cavity 17 close to the filter plate 12. The water inlet is connected to an aquaculture pond, etc., for passing aquaculture water into the water inlet cavity 17. The water outlet discharges the filtered aquaculture water to the biochemical treatment mechanism 2. The distance from the filter plate 12 to the first end plate 13 is smaller than the distance from the filter plate 12 to the second end plate 14, that is, the volume of the water inlet chamber 17 is larger than the volume of the water outlet chamber 16. During filtering, solid impurities will remain in the water inlet chamber 17. When the volume of the water inlet chamber 17 is larger, it can accommodate more solid impurities, thereby reducing the cleaning frequency of the solid impurities.

[0030] During the operation of the present invention, aquaculture water enters the water inlet chamber 17 through the water inlet, and then enters the water outlet chamber 16 after passing through the filter holes of the filter plate 12. Solid impurities in the aquaculture water, such as feed residues, feces, etc., remain in the water inlet chamber 17. The aquaculture water in the water outlet chamber 16 enters the biochemical treatment mechanism 2 through the water outlet. The biochemical treatment mechanism 2 performs biochemical treatment on the aquaculture water to remove pollutants such as ammonia nitrogen and organic matter in the water, and then transports the aquaculture water to the disinfection mechanism 3. After the disinfection mechanism 3 disinfects and sterilizes the aquaculture water, the aquaculture water is transported to the aquaculture facility to achieve the recycling and recycling treatment of the aquaculture water.

[0031] During the filtering process, the filter holes of the filter plate 12 will gradually become clogged. When cleaning or replacing the filter plate 12, the water inlet will stop entering the water inlet, and the pressure mechanism 15 will be used to push the filter plate 12 to move toward the second end plate 14, so that the distance between the filter plate 12 and the second end plate 14 will gradually decrease. When the filter plate 12 moves, it will push the solid impurities in the water inlet chamber 17 to move, and at the same time, the edge of the filter plate 12 will scrape off the solid impurities adhered to the inner wall of the cylinder 11. As the space of the water inlet chamber 17 shrinks, the solid impurities are gradually squeezed between the filter plate 12 and the second end plate 14, and the water in the solid impurities is continuously squeezed out and flows through the filter holes on the filter plate 12 to the water outlet chamber 16, so as to achieve the dehydration of the solid impurities. When the pressure on the solid impurities reaches the set value, the second end plate 14 can be removed from the cylinder 11, and then the pressure mechanism 15 will push the dehydrated solid impurities and the filter plate 12 to move as a whole outside the cylinder 11, so that the dry solid impurities can be obtained, and at the same time, the filter plate 12 can be easily replaced or the clogged filter holes can be cleaned.

[0032] The water outlet is arranged at the bottom of the water outlet chamber 16, which can ensure that all the water in the water outlet chamber 16 is discharged. The water inlet is arranged at the top of the water inlet chamber 17 and close to the filter plate 12. When the filter plate 12 pushes the solid impurities to move, the solid impurities can be prevented from entering the water inlet.

[0033] It can be seen that in the present invention, while cleaning or replacing the filter plate 12, the solid impurities inside the filter device can be cleaned and the solid impurities can be dehydrated, which reduces the maintenance difficulty of the filter mechanism and improves the maintenance efficiency.

[0034] The second end plate 14 is provided with a mud discharge port 18, and the mud discharge port 18 is provided with a detachable mud discharge cover 19, and the mud discharge cover 19 can be threadedly connected with the mud discharge port 18. When the filter plate 12 does not need to be replaced and the solid impurities in the water inlet chamber 17 need to be cleaned, the solid impurities can be squeezed and dehydrated first, and then the mud discharge cover 19 is removed, and the mud discharge port 18 is opened. The pressure mechanism 15 continues to apply pressure to the solid impurities through the filter plate 12, and the solid impurities can be discharged through the mud discharge port 18. It is not necessary to completely remove the second end plate 14, and mud discharge is more convenient.

[0035] In the present invention, the biochemical treatment mechanism 2 is specifically as follows Figure 3 , Figure 4 and Figure 5 As shown, it includes a tank body 21, which is rectangular. Anoxic zone 22, anaerobic zone 23 and aerobic zone 24 are sequentially arranged in the tank body 21, and the anoxic zone 22 is connected to the water outlet. The anoxic zone 22, anaerobic zone 23 and aerobic zone 24 respectively treat the aquaculture water by anoxic microorganisms, anaerobic microorganisms and aerobic microorganisms to decompose the pollutants such as ammonia nitrogen and organic matter in the water. The anoxic zone 22, anaerobic zone 23 and aerobic zone 24 are separated by a vertical partition wall 25, and the partition wall 25 includes a first wall and a second wall parallel to each other. The first wall and the second wall are vertically arranged, and brick walls can be used. A plurality of water holes 26 are arranged on the first wall and the second wall, and the water holes 26 are used to allow aquaculture water to pass through. A filling cavity is provided between the first wall and the second wall, and a detachable filter material box 27 is provided in the filling cavity. A granular filter material is provided inside the filter material box 27. During the growth of microorganisms in the anoxic zone 22, the anaerobic zone 23 and the aerobic zone 24, sludge is generated. The granular filter material can filter the aquaculture water to prevent the sludge from flowing to the next area with the water flow. The granular filter material is specifically sand and gravel particles with a particle size of 5 to 12 mm. Fillers are provided in the anoxic zone 22, the anaerobic zone 23 and the aerobic zone 24. The fillers are used for microorganisms to attach and provide a place for microorganisms to grow. Various existing fillers can be used, such as suspended ball fillers that can be suspended in water, or braided fillers. Braided fillers are a commonly used flexible belt material with the advantages of light weight, low cost, and easy installation. Microorganisms can attach to the braided fillers and grow and reproduce, thereby consuming the pollutants in the sewage. When braided fillers are used, crossbeams can be set at the top of the anoxic zone 22, the anaerobic zone 23 and the aerobic zone 24, and the braided fillers are hung on the crossbeams. Sludge is generated during the growth of microorganisms, and the sludge gradually adheres to the braided fillers, causing the weight of the braided fillers to gradually increase, which can easily cause the braided fillers to break. Therefore, the crossbeam can be connected to a vibration motor, and the vibration motor can be used to drive the crossbeam to reciprocate linearly at a small amplitude every once in a while. When the crossbeam moves, it drives the braided fillers to vibrate slightly, shakes off the sludge on the surface of the braided fillers, and avoids the braided fillers from breaking due to the increasing weight. An aeration mechanism 211 is set at the bottom of the aerobic zone 24, which is used to aerate the aerobic zone 24, increase the oxygen content in the aerobic zone 24, and promote the growth of aerobic microorganisms.

[0036] In the present invention, the aquaculture facility is a breeding pond 5, which is rectangular, and the pool body 21 is arranged around the breeding pond 5. The filtering mechanism 1 and the disinfecting mechanism 3 are installed near the breeding pond 5, and the filtering mechanism 1 and the disinfecting mechanism 3 are respectively located at both ends of the breeding pond 5. The water inlet of the water inlet cavity 17 is connected to the breeding pond 5 through a lifting pipe 51, and a first lifting pump 52 is arranged on the lifting pipe 51. The first lifting pump 52 is used to pump the breeding water in the breeding pond 5 to the water inlet cavity 17. The disinfecting mechanism 3 is connected to the breeding pond 5, and is used to discharge the disinfected breeding water back into the breeding pond 5.

[0037] The anoxic zone 22, the anaerobic zone 23 and the aerobic zone 24 are all provided with a sludge discharge mechanism. The sludge generated in the anoxic zone 22, the anaerobic zone 23 and the aerobic zone 24 settles to the bottom of the anoxic zone 22, the anaerobic zone 23 and the aerobic zone 24, and a sludge discharge mechanism is required to discharge the sludge. The traditional sludge discharge mechanism is a porous sludge discharge pipe, and the porous sludge discharge pipe is connected to a sludge pump. It is difficult for this sludge discharge mechanism to fully discharge the sludge in various areas at the bottom of the tank body 21, and there is sludge residue. In addition, the water body is disturbed during sludge discharge, causing the sludge to enter the upper water again, making the aquaculture water turbid.

[0038] In order to solve the problems existing in the existing mud discharge mechanism, the mud discharge mechanism of the present invention comprises a vertically arranged scraper 212, the bottom edge of the scraper 212 contacts the bottom wall of the anoxic zone 22, the anaerobic zone 23 or the aerobic zone 24, and the two sides of the scraper 212 contact the side walls of the anoxic zone 22, the anaerobic zone 23 or the aerobic zone 24. When the scraper 212 moves, it can scrape the sludge at the bottom of the anoxic zone 22, the anaerobic zone 23 or the aerobic zone 24, and at the same time, it can scrape off the sludge adhered to the side wall of the bottom of the anoxic zone 22, the anaerobic zone 23 or the aerobic zone 24. A plurality of horizontal guide rods 213 are arranged at the bottom of the anoxic zone 22, the anaerobic zone 23 and the aerobic zone 24. The guide rods 213 penetrate the scraper 212 and slide with the scraper 212. The guide rods 213 are used to guide and position the scraper 212 to ensure that the scraper 212 moves stably along the guide rods 213. The scraper 212 is connected to a sludge scraping driving mechanism for driving the scraper 212 to move. Mud discharge pumps 214 are provided at the bottom of the anoxic zone 22, the anaerobic zone 23 and the aerobic zone 24 at both ends of the guide rod 213. After the scraper 212 scrapes the sludge to one end of the anoxic zone 22, the anaerobic zone 23 and the aerobic zone 24, the sludge can be discharged in a centralized manner by using the sludge discharge pump 214. A flexible mud guard 215 is provided above the scraper 212. The mud guard 215 can be made of a permeable material or a non-permeable material to prevent the sludge from moving upward to the aquaculture water in the upper layer. The two side walls of the anoxic zone 22, the anaerobic zone 23 and the aerobic zone 24 are respectively provided with a horizontal first pressing roller 216 and a second pressing roller 217. The two side edges of the mud guard cloth 215 are respectively pressed against the side walls of the tank body 21 by the first pressing roller 216 and the second pressing roller 217. Both side edges of the mud guard cloth 215 are connected with a flexible first pull rope 218. There are multiple first pull ropes 218, which are evenly distributed on the two side edges of the mud guard cloth 215. The first pull rope 218 is connected with a first retracting and unreeling motor 219. When there is no need to clean the sludge, the first retracting and unreeling motor 219 on one side of the mud guard cloth 215 is used to drive the first pull rope 218 to reel. The first pull rope 218 pulls the mud guard cloth 215 to move to the side wall of the anoxic zone 22, the anaerobic zone 23 or the aerobic zone 24, and does not prevent the sludge from settling to the bottom of the anoxic zone 22, the anaerobic zone 23 or the aerobic zone 24. When the sludge needs to be cleaned, the first retracting and unreeling motor 219 on the other side of the mud shield 215 is used to drive the first pull rope 218 to reel, and the first pull rope 218 pulls the mud shield 215 to move to a horizontal position. At this time, the mud shield 215 separates the scraper 212 from the upper aquaculture water, and the scraper drive mechanism can be used to drive the scraper 212 to move from one end of the guide rod 213 to the other end. The scraper 212 scrapes the sludge, so that the sludge is gathered at one end of the anoxic zone 22, the anaerobic zone 23 or the aerobic zone 24, and then the sludge is discharged in a centralized manner by the mud discharge pump 214. Due to the obstruction of the mud shield 215, the sludge below the mud shield 215 will not move into the aquaculture water above, preventing the aquaculture water from becoming turbid.

[0039] The scraper driving mechanism includes a second pull rope 220 and a third pull rope 221, which are respectively fixedly connected to the center of the two sides of the scraper 212. The side walls of the anoxic zone 22, the anaerobic zone 23 and the aerobic zone 24 above the two ends of the guide rod 213 are provided with guide wheels 222. The second pull rope 220 and the third pull rope 221 are respectively matched with the guide wheels 222 and connected to the second retracting and unwinding motor 223. The guide wheel 222 plays a role of guiding and reversing. The second pull rope 220 and the third pull rope 221 between the guide wheel 222 and the scraper 212 are in a horizontal state, and the second pull rope 220 and the third pull rope 221 between the guide wheel 222 and the second retracting and unwinding motor 223 are in a vertical state. When the second retracting and unwinding motor 223 is in operation, the second pull rope 220 can be pulled to reel, and the other second retracting and unwinding motor 223 can unwind, so as to drive the scraper 212 to move.

[0040] In the present invention, the aeration mechanism 211 is a microporous aeration disk, which is embedded in the bottom wall of the aerobic zone 24 and does not block the movement of the scraper 212 .

[0041] In the present invention, the disinfection mechanism 3 is as follows Figure 6 As shown, it includes a disinfection cabinet 31, and a plurality of filler floats 32 are arranged inside the disinfection cabinet 31; the inner cavity of the disinfection cabinet 31 is divided into a first cavity 34 and a second cavity 35 by a vertical partition 33, the bottoms of the first cavity 34 and the second cavity 35 are connected, the bottom of the first cavity 34 is connected to an ozone supply mechanism 36, the top of the first cavity 34 is connected to the top of the aerobic zone 24 through a connecting pipe, a second lifting pump 37 is arranged on the connecting pipe, and a drain pipe 38 is arranged at the top of the second cavity 35.

[0042] The ozone supply mechanism 36 can adopt existing equipment such as an ozone generator, which is used to introduce ozone into the first cavity 34. Ozone has good disinfection and sterilization functions, and has high sterilization efficiency. It will not bring new pollutants, and the oxygen formed by decomposition can also increase the oxygen content of the aquaculture water. Most of the ozone enters the first cavity 34 and flows upward, but the water inside the first cavity 34 flows downward, so the ozone first flows upward, and then flows downward with the water and enters the second cavity 35, which can extend the flow path of the ozone and ensure that the ozone is fully in contact with the water. The second booster pump 37 is used to transport the aquaculture water on the top layer of the aerobic zone 24 to the first cavity 34, and the outlet of the drain pipe 38 is connected to the aquaculture pond 5 to discharge the disinfected aquaculture water into the aquaculture pond 5.

[0043] Ozone also has strong oxidizing properties and can decompose organic matter such as antibiotics to improve the treatment effect. In order to promote the decomposition of organic matter such as antibiotics by ozone, the present invention provides a plurality of filler floats 32 in the first cavity 34 and the second cavity 35. The filler floats 32 are as follows: Figure 7As shown, it includes a mesh shell layer 321, a filler layer 322 and a hollow ball 323 arranged in sequence from the outside to the inside, and a plurality of through holes are arranged on the mesh shell layer 321, so that water can enter the mesh shell layer 321. The hollow ball 323 is a plastic sphere, and the overall density of the filler float 32 is similar to the density of aquaculture water, and can be suspended in water. A filler layer 322 is arranged inside the filler float 32, and the filler layer 322 is a catalytic filler, which can accelerate the decomposition rate of ozone on organic matter, and the catalytic filler can specifically be granular TiO2, Al2O3, MnO2, etc.

[0044] The sludge carried by the aquaculture water will gradually adhere to the packing float 32, affecting the contact between the catalytic packing and the water, and at the same time causing the weight of the packing float 32 to increase and sink to the bottom of the first cavity 34 and the second cavity 35. In order to solve this problem, the present invention is provided with a vertical rotating shaft 39 at the bottom of the disinfection cabinet 31, and a mud removal motor 311 is connected to the lower end of the rotating shaft 39, and a plurality of flexible beating bars 312 are provided at the upper end of the rotating shaft 390. When a certain amount of packing float 32 exists at the bottom of the first cavity 34 and the second cavity 35, the mud removal motor 311 is started, and the mud removal motor 311 drives the rotating shaft 30 and the beating bar 312 to move, and the beating bar 312 beats the packing float 32, so that the sludge adhered to the packing float 32 falls off.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An aquaculture water circulation treatment system, comprising a filtering mechanism (1), a biochemical treatment mechanism (2) and a disinfection mechanism (3) arranged in sequence, characterized in that: The filtering mechanism (1) comprises a horizontally arranged cylinder (11), a filter plate (12) is arranged inside the cylinder (11), the edge of the filter plate (12) is slidably matched with the inner wall of the cylinder (11), and the filter plate (12) is connected to a pressure mechanism (15) for driving the filter plate (12) to slide; two ends of the cylinder (11) are respectively provided with a detachable first end plate (13) and a second end plate (14), and the filter plate (12) is connected to the first end plate The distance between the filter plate (12) and the second end plate (13) is smaller than the distance between the filter plate (12) and the second end plate (14); a water outlet cavity (16) is provided between the filter plate (12) and the first end plate (13); a water outlet is provided at the bottom of the water outlet cavity (16); and the water outlet is connected to the biochemical treatment mechanism (2); a water inlet cavity (17) is provided between the filter plate (12) and the second end plate (14); and a water inlet is provided on the top wall of one end of the water inlet cavity (17) close to the filter plate (12); The pressure mechanism (15) is a hydraulic cylinder, the cylinder body of which is fixed outside the barrel (11) and penetrates the first end plate (13), and the piston rod of the hydraulic cylinder is detachably connected to the filter plate (12); When cleaning or replacing the filter plate (12), the second end plate (14) is removed, and the pressure mechanism 15 pushes the dehydrated solid impurities and the filter plate (12) to move as a whole out of the cylinder (11); The second end plate (14) is provided with a mud discharge port (18), and the mud discharge port (18) is provided with a detachable mud discharge cover (19); The biochemical treatment mechanism (2) comprises a tank body (21), wherein an anoxic zone (22), an anaerobic zone (23) and an aerobic zone (24) are sequentially arranged in the tank body (21), wherein the anoxic zone (22) is connected to a water outlet; the anoxic zone (22), the anaerobic zone (23) and the aerobic zone (24) are separated by a vertical partition wall (25), wherein the partition wall (25) comprises a first wall body and a second wall body parallel to each other, wherein the first wall body and the second wall body are provided with a plurality of water holes (26), and a filling cavity is arranged between the first wall body and the second wall body, wherein a detachable filter material net box (27) is arranged in the filling cavity, and a granular filter material is arranged inside the filter material net box (27); fillers are arranged in the anoxic zone (22), the anaerobic zone (23) and the aerobic zone (24); and an aeration mechanism (211) is arranged at the bottom of the aerobic zone (24); The filler adopts braided filler. A crossbeam is arranged on the top of the anoxic zone (22), the anaerobic zone (23) and the aerobic zone (24). The braided filler is suspended on the crossbeam. The crossbeam is connected to a vibration motor. The vibration motor is used to drive the crossbeam to reciprocate linear motion. When the crossbeam moves, the braided filler is driven to vibrate slightly to shake off the sludge on the surface of the braided filler.

2. The aquaculture water circulation treatment system according to claim 1, characterized in that: The pool body (21) is arranged around the breeding pond (5); the water inlet of the water inlet chamber (17) is connected to the breeding pond (5) through a lifting pipe (51); a first lifting pump (52) is arranged on the lifting pipe (51); and the disinfection mechanism (3) is connected to the breeding pond (5).

3. The aquaculture water circulation treatment system according to claim 1 or 2, characterized in that: The anoxic zone (22), the anaerobic zone (23) and the aerobic zone (24) are all provided with a mud discharge mechanism, and the mud discharge mechanism comprises a vertically arranged scraper (212), the bottom edge of the scraper (212) contacts the bottom wall of the anoxic zone (22), the anaerobic zone (23) or the aerobic zone (24), and the two side edges of the scraper (212) contact the side walls of the anoxic zone (22), the anaerobic zone (23) or the aerobic zone (24); a plurality of horizontal guide rods (213) are provided at the bottom of the anoxic zone (22), the anaerobic zone (23) and the aerobic zone (24), and the guide rods (213) penetrate the scraper (212) and are slidably matched with the scraper (212); the scraper (212) is connected to a driving scraper (212) A movable mud scraping drive mechanism; mud pumps (214) are arranged at the bottom of the anoxic zone (22), the anaerobic zone (23) and the aerobic zone (24) at both ends of the guide rod (213); a flexible mud barrier cloth (215) is arranged above the scraper (212); horizontal first pressing rollers (216) and second pressing rollers (217) are arranged on both side walls of the anoxic zone (22), the anaerobic zone (23) and the aerobic zone (24); both side edges of the mud barrier cloth (215) are pressed by the first pressing roller (216) and the second pressing roller (217) respectively; both side edges of the mud barrier cloth (215) are connected to flexible first pull ropes (218); the first pull ropes (218) are connected to a first retracting and unwinding motor (219).

4. The aquaculture water circulation treatment system according to claim 3, characterized in that: The mud scraping drive mechanism comprises a second pull rope (220) and a third pull rope (221); guide wheels (222) are arranged on the side walls of the anoxic zone (22), the anaerobic zone (23) and the aerobic zone (24) above both ends of the guide rod (213); the second pull rope (220) and the third pull rope (221) are respectively matched with the guide wheels (222) and connected to a second retracting and unreeling motor (223).

5. The aquaculture water circulation treatment system according to claim 3, characterized in that: The aeration mechanism (211) is a microporous aeration disk, and the microporous aeration disk is embedded in the bottom wall of the aerobic zone (24).

6. The aquaculture water circulation treatment system according to claim 3, characterized in that: The particle filter material is sand and gravel particles with a particle size of 5 to 12 mm.

7. The aquaculture water circulation treatment system according to claim 1, characterized in that: The disinfection mechanism (3) comprises a disinfection cabinet (31), wherein a plurality of filler floats (32) are arranged inside the disinfection cabinet (31); the inner cavity of the disinfection cabinet (31) is divided into a first cavity (34) and a second cavity (35) by a vertical partition (33); the bottoms of the first cavity (34) and the second cavity (35) are connected; the bottom of the first cavity (34) is connected to an ozone supply mechanism (36); the top of the first cavity (34) is connected to the top of the aerobic zone (24) through a connecting pipe; a second lifting pump (37) is arranged on the connecting pipe; and a drainage pipe (38) is arranged at the top of the second cavity (35).

8. The aquaculture water circulation treatment system according to claim 7, characterized in that: The filler float (32) comprises a mesh shell layer (321), a filler layer (322) and a hollow ball (323) which are arranged in sequence from the outside to the inside. A vertical rotating shaft (39) is arranged at the bottom of the disinfection cabinet (31), a mud removal motor (311) is connected to the lower end of the rotating shaft (39), and a plurality of flexible knocking bars (312) are arranged at the upper end of the rotating shaft (39).

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