System and method for water quality purification for factory farming of penaeus vannamei

Abstract

The present invention relates to the technical field of water treatment, and provides a system for water quality purification for factory farming of penaeus vannamei, which comprises a treatment tank (100), a bearing platform (200) and a cultivation tank (400), wherein the treatment tank (100) is fixed onto the bearing platform (200), and the cultivation tank (400) is fixed onto the bearing platform (200); a separation plate (101) is fixed in the treatment tank (100), a first water through hole (102) is formed in the separation plate (101), and the separation plate (101) divides the treatment tank (100) into an overflow area (103) and a purification and oxygen enrichment area (104), the purification and oxygen enrichment area (104) being in communication with a pipeline at the bottom of the cultivation tank (400); and a flow-dividing assembly (110) is fixed in the overflow area (103), a desilting assembly (120) is fixed to the bottom of the overflow area (103), a filter assembly (130) is fixed in the purification and oxygen enrichment area (104), the filter assembly (130) comprises a filter box (131), and a disinfection box (150) is fixed onto a side wall of the treatment tank (100). Thus, disinfectant and water can be fully mixed, improving the disinfection and purification effect, and in turn the stress on the penaeus vannamei is reduced, thereby reducing the death rate thereof.

Description

A water purification system and method for factory-scale whiteleg shrimp farming Technical Field

[0001] The present invention relates to the technical field of water treatment, and in particular to a water purification system and method for factory-based whiteleg shrimp farming. Background Art

[0002] my country is a major aquatic producer, ranking first in the world in aquatic product output and the only country where aquaculture production exceeds capture fisheries. In recent years, with rising consumer spending, demand for aquatic protein has gradually shifted from common fish to premium, high-quality aquatic animals. According to a survey conducted by the China Media Consumption Center for Prepared Aquatic Meals, the most in-demand shrimp is whiteleg shrimp, known for its fast growth, delicious meat, rich nutrition, and convenient consumption. Its cultivation and consumption have seen rapid growth in recent years. However, traditional aquaculture is limited by water pollution and the spread of diseases during its cultivation, significantly impacting profitability. To address these issues, major companies in the industry are investing significant capital and manpower in the research and development of factory shrimp farming.

[0003] Factory farming can reduce labor and resource consumption, improving the economic benefits of farming. However, it comes with high initial costs and a high technical threshold. For example, the density of factory-farmed shrimp is much higher than traditional farming. Therefore, the key technical issue is the closed-circulating water system. The key is to reduce the average daily water exchange rate throughout the farming process and effectively control water quality, making water quality indicators more stable throughout the farming process, reducing the stress caused by water quality deterioration on shrimp, thereby improving the success rate of farming and ensuring that tailwater discharge is controllable and meets environmental requirements. Therefore, when implementing this technology, it is necessary to comprehensively consider various factors and formulate reasonable farming plans and management strategies to ensure farming efficiency and environmental sustainability.

[0004] Numerous studies have been conducted on industrial shrimp farming recirculating water utilization systems, with varying emphases depending on the environment and model. For example, Chinese patent application publication number CN108174816B discloses a water recycling and reuse system for rural aquaculture. The system comprises a housing, a baffle disposed within the housing, a water pump disposed at the top of the housing, a water outlet of the water pump disposed at the top of the housing on one side of the baffle, a cleaning mechanism disposed at the bottom of the housing below the water outlet, a first opening disposed on the baffle, and a frame disposed below the first opening on the side of the baffle away from the cleaning mechanism. A fine sand layer is disposed above the wire mesh, and a medium sand layer is disposed between the wire meshes. Multiple tubes are disposed within each of the fine, medium, and coarse sand layers. One end of each tube extends sequentially through one side of the housing and one side of the housing, disposed within the housing. The tubes are provided with multiple liquid outlets, and a drain is disposed on one side of the housing below the frame.

[0005] Although this patent achieves disinfection of water by providing multiple tubes in the fine sand layer, medium sand layer and coarse sand layer, and multiple liquid outlets on the tubes, the contact space between the disinfectant and the water is limited, resulting in low mixing efficiency of the disinfectant and the water, resulting in insignificant disinfection efficiency.

[0006] Summary of the Invention

[0007] The embodiments of the present application provide a water purification system and method for factory-based whiteleg shrimp farming, thereby solving the technical problems of low mixing efficiency of disinfectant and water and unclear disinfection efficiency in the prior art.

[0008] The present application provides a factory-based water purification system for whiteleg shrimp farming, comprising a treatment box, a carrying platform, and a breeding box. The carrying platform is horizontally arranged and has a rectangular shape. The characteristics are as follows: a treatment box is fixed on the carrying platform, the interior of the treatment box is hollow, and the treatment box is in the shape of a rectangular parallelepiped; a breeding box is fixed on the carrying platform and located on one side of the treatment box, and the breeding box is in the shape of a groove;

[0009] A filter assembly is fixed in the treatment box; a disinfection box is fixed on the side wall of the treatment box, the disinfection box is located above the breeding box, the interior of the disinfection box is hollow and a feed port is opened on the top, a disinfection tube is fixed in the treatment box, the disinfection tube is horizontally arranged and its overall outline is rectangular, the input end of the disinfection tube passes through the treatment box and the side wall of the disinfection box and extends into the disinfection box, the disinfection tubes are distributed in a grid shape, and multiple disinfection holes are opened on the disinfection tubes.

[0010] As an improvement, the filter assembly includes a filter box, which is in the shape of a rectangular parallelepiped. Several through holes are opened on the sides of the filter box facing the top wall and bottom wall of the treatment box. Two steel wire meshes are fixed on the inner wall of the filter box. The steel wire meshes are arranged horizontally to divide the filter box into three filter areas. The three filter areas are away from the top wall of the filter box, namely, fine sand layer, medium sand layer and coarse sand layer. The disinfection pipe is located in the fine sand layer, medium sand layer and coarse sand layer; a filter mesh is fixed on the bottom of the filter box.

[0011] As an improvement, an isolation plate is fixed in the treatment box, the isolation plate being perpendicular to the bottom wall of the treatment box; a first water hole is provided on the isolation plate, the first water hole being located at a portion of the isolation plate away from the bottom of the treatment box; the isolation plate divides the treatment box into an overflow area and a purification and oxygenation area, the purification and oxygenation area being connected to a pipe at the bottom of the aquaculture box; and the water outlet of the aquaculture box is connected to an external water reservoir;

[0012] A diversion assembly is fixed in the overflow area, and a dredging assembly is fixed at the bottom of the overflow area. The diversion assembly includes a diversion plate and a number of diversion holes. The diversion plate is rectangular and fixed on the side walls of the processing box and the isolation plate. The diversion plate is horizontally arranged and located above the first water hole. A number of diversion holes are arranged at intervals on the diversion plate.

[0013] As an improvement, the dredging assembly includes a cylinder fixed on one side of the treatment box, one end of the cylinder is connected to the treatment box, and the other end of the cylinder is fixed with a motor through a connecting frame. A rotating shaft is connected inside the cylinder, and the rotating shaft is arranged horizontally. One end of the rotating shaft rotates through the side wall of the cylinder and is fixedly connected to the output shaft of the motor, and the other end of the rotating shaft extends into the treatment box and is rotatably connected to the isolation plate. A number of spiral blades are fixed on the rotating shaft, and a dredging port is opened at the bottom of the cylinder, and a sealing cover is connected to the cylinder below the dredging port.

[0014] As an improvement, the purification and oxygenation zone includes a guide assembly, which includes two horizontally arranged guide plates, which are fixed on the side walls of the treatment box and the isolation plate. Each guide plate has a second water hole in the vertical and horizontal directions, and the two second water holes are arranged far away from each other in the horizontal direction. The treatment box is located in the purification and oxygenation zone and has an air vent on the top wall.

[0015] As an improvement, the outside of the disinfection tube in the filter box is connected to a water-permeable pipe, the water-permeable pipe is in a grid shape, the inner diameter of the water-permeable pipe is larger than the outer diameter of the disinfection tube, and a number of water-permeable holes are opened on the water-permeable pipe. The diameter of the water-permeable holes is smaller than the diameter of the particles in the fine sand layer, medium sand layer and coarse sand layer where they are located, and a mixing zone is formed between the inner wall of the water-permeable pipe and the outer wall of the disinfection tube.

[0016] As an improvement, an air pump is fixed on the top of the treatment box, the disinfection tube is spiral-shaped, the disinfection tube is made of elastic material, the part of the disinfection tube near the input end is connected to an air injection tube, the input ends of the air injection tube are connected to the output ends of the air pump, a one-way valve is fixed to the input end of the disinfection tube, and the cross-sectional diameter of the disinfection tube is half the cross-sectional diameter of the permeable pipe.

[0017] As an improvement, a water pump is also included. A water pump is fixed on the side of the processing box away from the supporting platform. The water inlet of the water pump is connected to the external water reservoir, and the water outlet of the water pump extends through the top wall of the processing box into the processing box.

[0018] As an improvement, it also includes a plurality of supporting feet, and the bottom plurality of supporting feet are fixed to the bottom of the bearing platform, and the supporting feet are in the shape of a truncated cone.

[0019] A method for cultivating whiteleg shrimp feed in a factory, comprising the following steps:

[0020] S1: Start the water pump (500) to inject water into the treatment tank (100) through the water reservoir, and the water is diverted through the diverter plate (111) and enters the overflow area (103);

[0021] S2: The water level in the overflow area (103) rises, and the water enters the purification and oxygenation area (104) through the first water hole (102); after circulation, desilting, filtration, oxygenation and disinfection, it enters the aquaculture box (400);

[0022] S3: The water flows through the through-holes on the top wall of the filter box (131) and enters the fine sand layer (133), the medium sand layer (134) and the coarse sand layer (135) in sequence for filtration. During this process, the disinfectant in the disinfection box (150) enters the fine sand layer (133), the medium sand layer (134) and the coarse sand layer (135) through the disinfection hole (153) of the disinfection pipe (152) and is uniformly mixed with the water for disinfection treatment.

[0023] S4: After filtration and disinfection, the water falls onto the guide plate (141) through the through hole at the bottom of the filter box (131), and then falls through the second water hole (142) after flowing on the guide plate (141);

[0024] S5: The water enters the breeding box (400) through the bottom pipe of the treatment box (100);

[0025] S6: Fertilize the water before stocking whiteleg shrimp;

[0026] S7: Adjust the water temperature to 22-25℃, pH value to 7.6, and salinity to 6‰;

[0027] S8: placing whiteleg shrimp seedlings in the culture box (400) and feeding them regularly with shrimp bait, wherein the shrimp bait includes strengthening feed, body-building feed, and meat-enhancing feed;

[0028] S9: During the breeding period, the water and residues enter the water reservoir through the outlet of the breeding tank (400) for sedimentation;

[0029] S10: Clean the water reservoir regularly;

[0030] S11: The whiteleg shrimp fry are harvested after being cultured for about 65 days.

[0031] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0032] First, the disinfection pipes are distributed in a grid pattern in the fine sand layer, medium sand layer and coarse sand layer, so that the disinfectant and the water being filtered are fully contacted and mixed, thereby improving the disinfection effect. In addition, the disinfection pipes are arranged in a horizontal plane as a whole in the fine sand layer, medium sand layer and coarse sand layer. Compared with the existing technology, the disinfection pipes are more stable, reducing the risk of the disinfection pipes deviating from the plane due to the influence of water flow, resulting in different outflow amounts of disinfectant at different positions and uneven mixing of disinfectant and water, thereby improving the stability of water disinfection.

[0033] Secondly, by connecting a permeable pipe to the outside of the disinfection pipe in the filter box, a mixing zone is formed between the inner wall of the permeable pipe and the outer wall of the disinfection pipe, which further improves the mixing effect, thereby further improving the disinfection effect. In addition, the setting of the permeable pipe can effectively prevent particles in the fine sand layer, medium sand layer and coarse sand layer from entering the mixing zone, reducing the risk of the disinfection holes on the disinfection pipe being blocked by particles and affecting the disinfection effect, and further improving the disinfection stability.

[0034] Third, by attaching an air pump to the top of the treatment box, and by attaching a spiral-shaped elastic disinfection tube, the disinfection tube near the input end is connected to an air injection tube, the air injection tube input end is connected to the air pump output end, and a one-way valve is fixed to the disinfection tube input end. The cross-sectional diameter of the disinfection tube is half the cross-sectional diameter of the permeable pipe. The expansion of the disinfection tube allows the disinfectant to flow through the disinfection holes to different locations in the mixing zone to mix with the water. Mixing with the water at different cross-sections of the mixing zone is achieved, further enhancing the mixing effect and the disinfection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] FIG1 is a schematic diagram of the overall structure of Example 1 of the present invention;

[0036] FIG2 is a schematic diagram of the arrangement of the disinfection tubes according to Example 1 of the present invention;

[0037] FIG3 is a schematic cross-sectional view of a disinfection tube according to Example 1 of the present invention;

[0038] FIG4 is a schematic diagram of the coordination between the water permeable pipe and the disinfection pipe according to Example 2 of the present invention;

[0039] FIG5 is a schematic cross-sectional view of a water permeable pipe and a disinfection pipe according to Example 2 of the present invention;

[0040] FIG6 is a schematic diagram of a water permeable pipe according to Example 3 of the present invention;

[0041] FIG7 is a schematic diagram of the coordination between the water permeable pipe and the disinfection pipe according to Example 3 of the present invention;

[0042] FIG8 is a diagram showing the working state of the disinfection tube according to Example 3 of the present invention;

[0043] In the figure: 100, treatment box; 101, isolation plate; 102, first water hole; 103, overflow area; 104, purification and oxygenation area; 200, supporting platform; 300, support leg; 400, breeding box; 500, water pump; 110, diversion assembly; 111, diversion plate; 112, diversion hole; 120, dredging assembly; 121, cylinder; 122, motor; 123, rotating shaft; 124, spiral blade; 125, dredging port; 126, sealing cover ; 130. Filter assembly; 131. Filter box; 132. Wire mesh; 133. Fine sand layer; 134. Medium sand layer; 135. Coarse sand layer; 136. Filter mesh; 140. Guide assembly; 141. Guide plate; 142. Second water hole; 150. Disinfection box; 151. Feed inlet; 152. Disinfection pipe; 153. Disinfection hole; 154. Permeable pipe; 155. Permeable hole; 156. Mixing zone; 157. Air injection pipe; 158. One-way valve. DETAILED DESCRIPTION

[0044] To facilitate understanding of the present invention, the present application will be described more comprehensively below with reference to the relevant drawings; the drawings show preferred embodiments of the present invention, but the present invention can be implemented in many different forms and is not limited to the embodiments described herein; on the contrary, the purpose of providing these embodiments is to enable a more thorough and comprehensive understanding of the disclosed content of the present invention.

[0045] It should be noted that the terms “vertical”, “horizontal”, “up”, “down”, “left”, “right” and similar expressions used in this document are for illustrative purposes only and do not represent the only implementation method.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains; the terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention; the term "and / or" used herein includes any and all combinations of one or more of the associated listed items.

[0047] The present application discloses a factory-based water purification system for whiteleg shrimp aquaculture. Grid-shaped disinfection pipes 152 are arranged in a fine sand layer 133, a medium sand layer 134, and a coarse sand layer 135, thereby improving the thorough mixing of the disinfectant and the water body and enhancing the disinfection effect. In addition, the disinfection pipes 152 are arranged in a horizontal plane as a whole in the fine sand layer 133, the medium sand layer 134, and the coarse sand layer 135. Compared with the prior art, the disinfection pipes 152 are more stable, reducing the risk of the disinfection pipes 152 being affected by the water flow and deviating from the horizontal plane, resulting in different outflow amounts of disinfectant at different positions, thereby causing uneven mixing of the disinfectant and the water body, thereby improving the stability of water disinfection.

[0048] Example 1

[0049] As shown in Figures 1-3, a water purification system for aquaculture of whiteleg shrimp in a factory includes a treatment tank 100, a supporting platform 200, support legs 300, a breeding tank 400, and a water pump 500. The supporting platform 200 is horizontally arranged and has a rectangular parallelepiped shape.

[0050] A plurality of supporting legs 300 are fixed to the bottom of the carrying platform 200, and the supporting legs 300 are in the shape of a truncated cone;

[0051] A processing box 100 is fixed on the side of the carrier 200 away from the supporting legs 300. The processing box 100 is hollow inside and has a rectangular parallelepiped shape.

[0052] A breeding box 400 is fixed on the side of the supporting platform 200 away from the supporting legs 300 and located on one side of the processing box 100. The breeding box 400 is in a groove shape.

[0053] A water pump 500 is fixed on the side of the processing box 100 facing away from the carrier 200. The water inlet of the water pump 500 is connected to the external water reservoir, and the water outlet of the water pump 500 extends through the top wall of the processing box 100 into the processing box 100.

[0054] An isolation plate 101 is fixed inside the processing box 100, and the isolation plate 101 is perpendicular to the bottom wall of the processing box 100;

[0055] A first water hole 102 is formed on the isolation plate 101. The first water hole 102 is located at a portion of the isolation plate 101 away from the bottom of the processing box 100.

[0056] The isolation plate 101 divides the processing box 100 into an overflow area 103 and a purification and oxygenation area 104. The top wall of the processing box 100 located in the purification and oxygenation area 104 is provided with a vent hole.

[0057] The purification and oxygenation zone 104 is connected to the bottom pipe of the aquaculture box 400; the water outlet of the aquaculture box 400 is connected to an external water reservoir, which can realize the centralized treatment of aquaculture waste by artificial means to avoid water pollution;

[0058] A diverter assembly 110 is fixed in the overflow area 103. The diverter assembly 110 includes a diverter plate 111 and a plurality of diverter holes 112. The diverter plate 111 is in the shape of a rectangular parallelepiped and is fixed to the side walls of the processing box 100 and the isolation plate 101. The diverter plate 111 is horizontally arranged and located above the first water hole 102. The diverter plate 111 is provided with a plurality of diverter holes 112 arranged at intervals.

[0059] A dredging assembly 120 is fixed at the bottom of the overflow area 103. The dredging assembly 120 includes a cylinder 121 fixed to one side of the treatment box 100. One end of the cylinder 121 is connected to the treatment box 100. A motor 122 is fixed to the other end of the cylinder 121 through a connecting frame. A rotating shaft 123 is connected to the cylinder 121. The rotating shaft 123 is arranged horizontally. One end of the rotating shaft 123 rotates through the side wall of the cylinder 121 and is fixedly connected to the output shaft of the motor 122. The other end of the rotating shaft 123 extends into the treatment box 100 and is rotatably connected to the isolation plate 101. A plurality of spiral blades 124 are fixed to the rotating shaft 123. A dredging port 125 is provided at the bottom of the cylinder 121. A sealing cover 126 is connected to the cylinder 121 below the dredging port 125.

[0060] A filter assembly 130 is fixed in the purification and oxygenation zone 104. The filter assembly 130 includes a filter box 131. The filter box 131 is in the shape of a rectangular parallelepiped. A plurality of through holes are provided on the sides of the filter box 131 facing the top and bottom walls of the treatment box 100. Two steel meshes 132 are fixed to the inner wall of the filter box 131. The steel meshes 132 are arranged horizontally to divide the filter box 131 into three filter areas. The three filter areas are located away from the top wall of the filter box 131 and are, in order, a fine sand layer 133, a medium sand layer 134, and a coarse sand layer 135. A filter mesh 136 is fixed to the bottom of the filter box 131.

[0061] A disinfection box 150 is fixed to the side wall of the processing box 100. The disinfection box 150 is located above the breeding box 400. The interior of the disinfection box 150 is hollow and a feed port 151 is provided on the top. Disinfection pipes 152 are fixed in the fine sand layer 133, the medium sand layer 134 and the coarse sand layer 135. The disinfection pipes 152 are arranged horizontally and have an overall rectangular outline. The input end of the disinfection pipe 152 passes through the side wall of the processing box 100 and the disinfection box 150 and extends into the disinfection box 150. The disinfection pipes 152 are distributed in a grid pattern in the fine sand layer 133, the medium sand layer 134 and the coarse sand layer 135, and a plurality of disinfection holes 153 are provided on the disinfection pipe 152.

[0062] The purification and oxygenation zone 104 also includes a flow guide assembly 140, which includes two horizontally arranged flow guide plates 141. The flow guide plates 141 are fixed to the side walls of the treatment box 100 and the isolation plate 101. Each flow guide plate 141 has a second water hole 142 in the vertical direction, and the two second water holes 142 are arranged horizontally away from each other.

[0063] When in use, start the water pump 500, the water pump 500 pumps the water in the water reservoir into the treatment box 100, the water is diverted through the diverter plate 111 to prevent the water from falling directly and generating a large impact force, the water level rises in the overflow area 103, and the water flows into the purification and oxygenation area 104 through the first water hole 102. The water is diverted through the through-holes on the top wall of the filter box 131 and enters the fine sand layer 133, the medium sand layer 134 and the coarse sand layer 135 in turn. In this process, the disinfectant in the disinfection box 150 enters the disinfection hole 153 of the disinfection pipe 152 The fine sand layer 133, the medium sand layer 134 and the coarse sand layer 135 are uniformly mixed with the water for disinfection treatment. After disinfection, the water falls onto the guide plate 141 through the through hole at the bottom of the filter box 131. After flowing on the guide plate 141, the water falls through the second water hole 142. By increasing the water flow process, the oxygen content in the water is increased; the water enters the breeding box 400 through the bottom pipe of the treatment box 100, and the water outlet of the breeding box 400 discharges the used water into the water reservoir, thereby realizing overall circulation, dredging, filtration, oxygenation and disinfection.

[0064] During dredging, the sealing cover 126 is opened, and the motor 122 is started to rotate the rotating shaft 123, which causes the spiral blade 124 to rotate, and the spiral blade 124 discharges the settled silt through the dredging port 125. After dredging, the motor 122 stops working and the dredging port 125 is sealed by the sealing cover 126.

[0065] Compared with the existing technology, the disinfection pipe 152 is distributed in a grid shape in the fine sand layer 133, the medium sand layer 134 and the coarse sand layer 135, so that the disinfectant and the water being filtered are fully contacted and mixed, thereby improving the disinfection effect. In addition, the disinfection pipe 152 is arranged in a horizontal plane as a whole in the fine sand layer 133, the medium sand layer 134 and the coarse sand layer 135. Compared with the existing technology, the disinfection pipe 152 is more stable, reducing the risk of the disinfection pipe 152 being affected by the water flow and deviating from the plane, resulting in different outflow amounts of disinfectant at different positions and uneven mixing of the disinfectant and the water, thereby improving the stability of water disinfection.

[0066] A method for cultivating whiteleg shrimp feed in a factory, comprising the following steps:

[0067] S1: Start the water pump (500) to inject water into the treatment tank (100) through the water reservoir, and the water is diverted through the diverter plate (111) and enters the overflow area (103);

[0068] S2: The water level in the overflow area (103) rises, and the water enters the purification and oxygenation area (104) through the first water hole (102); after circulation, desilting, filtration, oxygenation and disinfection, it enters the aquaculture box (400);

[0069] S3: The water flows through the through-holes on the top wall of the filter box (131) and enters the fine sand layer (133), the medium sand layer (134) and the coarse sand layer (135) in sequence for filtration. During this process, the disinfectant in the disinfection box (150) enters the fine sand layer (133), the medium sand layer (134) and the coarse sand layer (135) through the disinfection hole (153) of the disinfection pipe (152) and is uniformly mixed with the water for disinfection treatment.

[0070] S4: After filtration and disinfection, the water falls onto the guide plate (141) through the through hole at the bottom of the filter box (131), and then falls through the second water hole (142) after flowing on the guide plate (141);

[0071] S5: The water enters the breeding box (400) through the bottom pipe of the treatment box (100);

[0072] S6: Fertilize the water before stocking whiteleg shrimp;

[0073] S7: Adjust the water temperature to 22-25℃, pH value to 7.6, and salinity to 6‰;

[0074] S8: placing whiteleg shrimp seedlings in the culture box (400) and feeding them regularly with shrimp bait, wherein the shrimp bait includes strengthening feed, body-building feed, and meat-enhancing feed;

[0075] S9: During the breeding period, the water and residues enter the water reservoir through the outlet of the breeding tank (400) for sedimentation;

[0076] S10: Clean the water reservoir regularly;

[0077] S11: The whiteleg shrimp fry are harvested after being cultured for about 65 days.

[0078] Example 2

[0079] In order to further improve the disinfection effect, this embodiment is a further improvement of embodiment 1;

[0080] As shown in Figures 4-5, in this embodiment, the disinfection tube 152 in the filter box 131 is externally sleeved with a water-permeable pipe 154. The water-permeable pipe 154 is in a grid shape. The inner diameter of the water-permeable pipe 154 is larger than the outer diameter of the disinfection tube 152. A plurality of water-permeable holes 155 are provided on the water-permeable pipe 154. The diameter of each water-permeable hole 155 is smaller than the diameter of the particles in the fine sand layer 133, the medium sand layer 134, and the coarse sand layer 135 in which the holes are located. A mixing zone 156 is formed between the inner wall of the water-permeable pipe 154 and the outer wall of the disinfection tube 152.

[0081] During use, water enters the mixing zone 156 through the water permeable holes 155 on the water permeable pipe 154, and the disinfectant enters the mixing zone 156 through the disinfection holes 153 on the disinfection pipe 152. The disinfectant and water can be fully mixed in the mixing zone 156, further improving the mixing effect, thereby further improving the disinfection effect. In addition, the setting of the water permeable pipe 154 can effectively prevent the particles in the fine sand layer 133, the medium sand layer 134 and the coarse sand layer 135 from entering the mixing zone 156, reducing the risk of the disinfection holes 153 on the disinfection pipe 152 being blocked by particles and affecting the disinfection effect, thereby further improving the disinfection stability.

[0082] Example 3

[0083] In order to further improve the disinfection effect, this embodiment is a further improvement of embodiment 2;

[0084] As shown in Figures 6-8, in this embodiment, an air pump is fixed on the top of the processing box 100, the disinfection tube 152 is spiral-shaped, the disinfection tube 152 is made of elastic material, the disinfection tube 152 is connected to the air injection tube 157 near the input end, the input ends of the air injection tube 157 are connected to the output ends of the air pump, and a one-way valve 158 is fixed to the input end of the disinfection tube 152. The cross-sectional diameter of the disinfection tube 152 is half the cross-sectional diameter of the permeable tube 154.

[0085] During use, water enters the mixing zone 156 through the permeable hole 155 on the permeable pipe 154, and the disinfectant enters the filter box 131 through the one-way valve 158. The air pump is started. By controlling the different output powers of the air pump, the disinfection pipe 152 can be expanded. Compared with Example 2, the disinfectant flows in the spiral disinfection pipe 152 and flows out evenly to the mixing zone 156 through the disinfection hole 153. The disinfectant flow becomes longer and the outflow of disinfectant increases. At the same time, the expansion of the disinfection pipe 152 allows the disinfectant to flow through the disinfection hole 153 to different positions of the mixing zone 156 to mix with the water. Mixing with the water can be achieved at different cross-sections of the mixing zone 156, and the mixing effect is further improved, so that the disinfection effect is further enhanced.

[0086] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Various modifications and variations are readily apparent to those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A water purification system for industrialized Penaeus vannamei aquaculture, comprising a treatment box (100), a supporting platform (200) and a breeding box (400), wherein the supporting platform (200) is horizontally arranged and in a rectangular shape, and is characterized in that: A processing box (100) is fixed on the supporting platform (200), the interior of the processing box (100) is hollow, and the processing box (100) is in the shape of a rectangular parallelepiped; a breeding box (400) is fixed on the supporting platform (200) and located on one side of the processing box (100), and the breeding box (400) is in the shape of a groove; A filter assembly (130) is fixed in the processing box (100); a disinfection box (150) is fixed on the side wall of the processing box (100); the disinfection box (150) is located above the breeding box (400); the interior of the disinfection box (150) is hollow and a feed inlet (151) is provided on the top; a disinfection pipe (152) is fixed in the processing box (100); the disinfection pipe (152) is arranged horizontally and its overall outline is rectangular; an input end of the disinfection pipe (152) passes through the processing box (100) and the side wall of the disinfection box (150) and extends into the disinfection box (150); the disinfection pipes (152) are distributed in a grid shape and a plurality of disinfection holes (153) are provided on the disinfection pipe (152).

2. A water purification system for industrialized whiteleg shrimp farming as claimed in claim 1, characterized in that: The filter assembly (130) comprises a filter box (131), the filter box (131) is in a rectangular parallelepiped shape, a plurality of through holes are provided on the side surfaces of the filter box (131) facing the top wall and the bottom wall of the treatment box (100), two steel meshes (132) are fixed on the inner wall of the filter box (131), the steel meshes (132) are arranged horizontally to divide the filter box (131) into three filter areas, the three filter areas are respectively a fine sand layer (133), a medium sand layer (134) and a coarse sand layer (135) away from the top wall of the filter box (131), the disinfection pipe (152) is located in the fine sand layer (133), the medium sand layer (134) and the coarse sand layer (135); and a filter mesh (136) is fixed on the bottom of the filter box (131).

3. The industrialized water purification system for Penaeus vannamei aquaculture according to claim 1, characterized in that: An isolation plate (101) is fixed inside the treatment box (100), and the isolation plate (101) is perpendicular to the bottom wall of the treatment box (100); a first water hole (102) is provided on the isolation plate (101), and the first water hole (102) is located at a portion of the isolation plate (101) away from the bottom of the treatment box (100); the isolation plate (101) divides the treatment box (100) into an overflow area (103) and a purification and oxygenation area (104), and the purification and oxygenation area (104) is connected to a pipeline at the bottom of the breeding box (400); the water outlet of the breeding box (400) is connected to an external water storage tank; A flow dividing assembly (110) is fixed in the overflow area (103), and a dredging assembly (120) is fixed at the bottom of the overflow area (103). The flow dividing assembly (110) comprises a flow dividing plate (111) and a plurality of flow dividing holes (112). The flow dividing plate (111) is in a rectangular parallelepiped shape. The flow dividing plate (111) is fixed on the side walls of the treatment box (100) and the isolation plate (101). The flow dividing plate (111) is horizontally arranged and located above the first water through hole (102). The flow dividing plate (111) is provided with a plurality of flow dividing holes (112) arranged at intervals.

4. A water purification system for industrialized whiteleg shrimp farming as claimed in claim 2, characterized in that: The desilting assembly (120) comprises a cylinder (121) fixed on one side of a treatment box (100); one end of the cylinder (121) is connected to the treatment box (100); a motor (122) is fixed to the other end of the cylinder (121) via a connecting frame; a rotating shaft (123) is connected inside the cylinder (121); the rotating shaft (123) is arranged horizontally; one end of the rotating shaft (123) rotates through the side wall of the cylinder (121) and is fixedly connected to the output shaft of the motor (122); the other end of the rotating shaft (123) extends into the treatment box (100) and is rotatably connected to the isolation plate (101); a plurality of spiral blades (124) are fixed on the rotating shaft (123); a desilting port (125) is provided at the bottom of the cylinder (121); a sealing cover (126) is connected to the cylinder (121) below the desilting port (125).

5. The industrialized water purification system for Penaeus vannamei aquaculture as claimed in claim 2, characterized in that: The purification and oxygenation zone (104) includes a flow guide component (140), which includes two horizontally arranged flow guide plates (141). The flow guide plates (141) are fixed on the side walls of the treatment box (100) and the isolation plate (101). Each flow guide plate (141) is provided with a second water hole (142) in the vertical and horizontal directions. The two second water holes (142) are arranged far away from each other in the horizontal direction. The top wall of the treatment box (100) located in the purification and oxygenation zone (104) is provided with an air hole.

6. The industrialized water purification system for Penaeus vannamei aquaculture according to claim 1, characterized in that: The disinfection tube (152) in the filter box (131) is externally sleeved with a water-permeable tube (154), the water-permeable tube (154) is in a grid shape, the inner diameter of the water-permeable tube (154) is larger than the outer diameter of the disinfection tube (152), a plurality of water-permeable holes (155) are provided on the water-permeable tube (154), the diameter of each of the water-permeable holes (155) is smaller than the diameter of the particles in the fine sand layer (133), the medium sand layer (134) and the coarse sand layer (135), and a mixing zone (156) is formed between the inner wall of the water-permeable tube (154) and the outer wall of the disinfection tube (152).

7. The industrialized water purification system for Penaeus vannamei aquaculture according to claim 6, characterized in that: An air pump is fixed on the top of the treatment box (100), the disinfection tube (152) is spiral-shaped, the disinfection tube (152) is made of elastic material, the disinfection tube (152) is connected to an air injection tube (157) near the input end, the input end of the air injection tube (157) is connected to the output end of the air pump, a one-way valve (158) is fixed to the input end of the disinfection tube (152), and the cross-sectional diameter of the disinfection tube (152) is half of the cross-sectional diameter of the permeable tube (154).

8. The industrialized water purification system for Penaeus vannamei aquaculture as claimed in claim 1, characterized in that: It also includes a water pump (500), which is fixed on the side of the processing box (100) away from the supporting platform (200), the water inlet of the water pump (500) is connected to the external water reservoir, and the water outlet of the water pump (500) extends through the top wall of the processing box (100) into the processing box (100).

9. The industrialized water purification system for Penaeus vannamei aquaculture according to claim 1, characterized in that: It also includes a plurality of supporting feet (300), wherein the plurality of supporting feet (300) at the bottom are fixed to the bottom of the bearing platform (200), and the supporting feet (300) are in the shape of a truncated cone.

10. The method for industrialized cultivation of Penaeus vannamei according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: Start the water pump (500) to inject water into the treatment tank (100) through the water reservoir, and the water is diverted through the diverter plate (111) and enters the overflow area (103); S2: The water level in the overflow area (103) rises, and the water enters the purification and oxygenation area (104) through the first water hole (102); after circulation, dredging, filtration, oxygenation and disinfection, the water enters the breeding box (400); S3: The water body is divided through the through holes on the top wall of the filter box (131) and enters the fine sand layer (133), the medium sand layer (134) and the coarse sand layer (135) in sequence for filtration. During this process, the disinfectant in the disinfection box (150) enters the fine sand layer (133), the medium sand layer (134) and the coarse sand layer (135) through the disinfection hole (153) of the disinfection pipe (152) and is uniformly mixed with the water body for disinfection treatment; S4: After filtration and disinfection, the water falls onto the guide plate (141) through the through hole at the bottom of the filter box (131), and the water flows on the guide plate (141) and then falls through the second water through hole (142); S5: The water enters the breeding box (400) through the bottom pipe of the treatment box (100); S6: Fertilize the water before stocking the white shrimp; S7: Adjust the water temperature to 22-25℃, pH value to 7.6, and salinity to 6‰; S8: Putting whiteleg shrimp seedlings into the culture box (400), and feeding them with shrimp bait regularly and regularly, wherein the shrimp bait includes strengthening feed, body-building feed, and meat-enhancing feed, etc.; S9: During the breeding period, the water and residues enter the water storage tank through the outlet of the breeding box (400) for sedimentation; S10: Clean the water reservoir regularly; S11: The whiteleg shrimp fry are harvested after being cultured for about 65 days and then become adult shrimps.

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