A device and method for rapid particulation of suspended solids in a factory shrimp farming system

Abstract

The present application relates to a kind of device of quick granulation of suspended solids in factory shrimp culture system, including a cylindrical barrel;Lower layer is water distribution area, water distribution area corresponding barrel outer ring is provided with a ring-shaped water distribution cavity, ring-shaped water distribution cavity uniformly arranges 3 tangential water inlets, wherein tangential water inlet three pass through pipe and a circulating pump and the top of barrel are communicated, circulating pump passes through tangential water inlet three and injects from water distribution area, the water of top barrel is extracted;Upper layer is water lifting area, water lifting area includes a double-ring water suction pipe, double-ring water suction pipe is communicated with the air-lift pipe located in the center, air-lift pipe side wall extends a transverse air-lift pipe and forms water outlet that extends the outside of barrel;Water in culture pond is under the action of negative pressure generated by air-lift in barrel and enters ring-shaped water distribution cavity along tangential water inlet two and tangential water inlet three, and flows into barrel along the gap of the bottom of ring-shaped water distribution cavity;Barrel is arranged in culture water body, the height of water surface is higher than double-ring water suction pipe and lower than transverse air-lift pipe.

Description

Technical Field

[0001] This invention relates to a device and method for rapid granulation of suspended matter in a factory-scale shrimp farming system. Background Technology

[0002] Litopenaeus vannamei is an important aquaculture species in my country, accounting for over 80% of total shrimp production. Currently, the main farming methods for Litopenaeus vannamei include pond culture and intensive farming. Pond culture includes earthen ponds and elevated ponds, while intensive farming includes small-scale shed culture and cement pond culture. Pond culture is easily affected by weather and environmental factors, with yields per unit water volume not exceeding 1 kg / m³. In contrast, intensive farming yields more than five times that of pond culture and offers advantages such as high efficiency, stability, and environmental friendliness, leading to a gradual expansion in its scale and output.

[0003] Currently, in intensive aquaculture, biofloc or biofilm technologies are commonly used to control the concentration of nutrients such as ammonia nitrogen in the aquaculture water. These technologies achieve efficient conversion of nutrients like nitrogen and phosphorus through bacterial biodegradation. Biofloc technology for Litopenaeus vannamei aquaculture has a long history and is relatively mature, with the scale of cultivation expanding year by year. However, it is difficult to achieve a stocking density of 5 kg / m³ using this technology. 3 The main reason is that the concentration of biofloc increases rapidly in the middle and late stages, making it difficult to manage efficiently with a small amount of water exchange. Excessive biofloc concentration can affect the growth and survival rate of Litopenaeus vannamei. Therefore, it is urgent to develop a device that can efficiently regulate the concentration of biofloc in order to improve the stability of biofloc-cultured shrimp.

[0004] Currently, in the process of shrimp farming using bioflocs:

[0005] 1) The concentration of biofloc in the aquaculture pond is mainly determined by sedimentation cup. If the concentration of biofloc is found to be too high, the concentration of floc in the aquaculture pond is usually reduced by changing the water. The automation level of biofloc concentration control in this way is low and there is a certain lag in the control.

[0006] 2) Existing shrimp farming systems have sufficient aeration, and most of the bacteria growing on the surface of bioflocs are aerobic bacteria, making it difficult to remove substances such as nitrogen or phosphorus from the farming system. Excessive nitrogen and phosphorus levels increase the difficulty and cost of wastewater treatment.

[0007] 3) The floc granulation is achieved by using intermittent water inlet, but it is technically difficult to achieve rapid floc granulation under continuous flow conditions, and there is a lack of corresponding device structures. Summary of the Invention

[0008] The present application aims to provide a device and method for quickly granulating suspended matter in a factory shrimp culture system, to realize automatic implementation and regulation, avoid regulation lag, and maintain the biological floc concentration at a suitable level for shrimp growth; a device suitable for the growth of anaerobic bacteria such as denitrifying bacteria, to further reduce the nitrogen and phosphorus concentrations in the shrimp culture system; and to realize the quick granulation of biological flocs under continuous flow working conditions.

[0009] The present application adopts the following technical solutions:

[0010] A device for quickly granulating suspended matter in a factory shrimp culture system, comprising a cylindrical barrel, which is internally divided into upper, middle and lower layers; the lower layer is a water distribution area, and an annular water distribution cavity 13 is arranged on the outer ring of the barrel corresponding to the water distribution area; the annular water distribution cavity 13 is uniformly provided with three tangential water inlets 30, 33 and 11, wherein the tangential water inlet three 11 is communicated with the top of the barrel through a pipe and a circulating pump 10; the circulating pump 10 draws water from the top of the barrel and injects it into the water distribution area through the tangential water inlet three 11, to realize the circulation of water in the barrel; the middle layer is a granular matter storage and sedimentation area; the upper layer is a water lifting area, which comprises a double-ring water suction pipe 17, the double-ring water suction pipe 17 is provided with a large number of water suction holes 6, the double-ring water suction pipe 17 is communicated with a gas-lifting pipe 4 located at the center thereof, the gas-lifting pipe 4 is integrated with the pipe extending into the barrel from the top, and the lateral wall of the gas-lifting pipe 4 extends out of the barrel and forms a horizontal gas-lifting pipe 23 serving as a water outlet 26; the water in the culture pond enters the annular water distribution cavity 13 along the tangential water inlet two 33 and the tangential water inlet three 11 under the action of the negative pressure generated by the gas-lifting in the barrel, and flows into the barrel along the gap at the bottom of the annular water distribution cavity 13; the barrel is arranged in the culture water, the height of the water surface is higher than the double-ring water suction pipe 17 and lower than the horizontal gas-lifting pipe 23; an annular sewage pipe 2 is arranged above the annular water distribution cavity 13, the annular sewage pipe 2 is provided with a large number of sewage holes 1, and the outer end of the annular sewage pipe 2 is provided with an electromagnetic valve 3 capable of being automatically opened and closed according to the received signal, to discharge excess particles in the barrel.

[0011] Preferably, a conical structure is arranged in the water distribution area at the bottom of the barrel, and the water flow can form a rotating operation in the barrel under the action of gas-lifting and water lifting by the circulating pump 10; and due to the presence of the conical structure, the pressure on the biological flocs at the barrel wall is higher than that at the conical part, so that the biological flocs in the barrel gather at the top of the conical part, and the extracellular polymeric substance secreted between the bacteria promotes the combination of the biological flocs, to further form particles.

[0012] Preferably, an annular particle interception plate 16 is arranged below the double-ring water suction pipe 17 in the water lifting area of the upper layer, to block the small particles directly rising with the water flow.

[0013] Further, the double ring water suction pipe 17 is composed of the inner ring pipe 7, the outer ring pipe 8 and the support 9, the inner ring pipe 7 and the outer ring pipe 8 are connected by the support 9, the double ring water suction pipe 17 is uniformly distributed with 2mm fine holes, the double ring water suction pipe 17 forms active water flow circulation by the circulating water pump 10 of the air lift pipe 4, when the circulating water pump 10 is started, the biological flocculation in the upper part of the cylinder is pumped into the tangential water inlet one 30 which is the water distribution area in the lower layer through the fine holes.

[0014] Further, the lower part of the inner ring pipe 7 is equipped with an "eight" shaped baffle 5 for blocking the tiny particles directly rising with the water flow from the bottom of the cylinder.

[0015] Preferably, the tangential water inlet one 30 and the tangential water inlet two 33 are equipped with check valves.

[0016] Preferably, the lower part of the cylinder in the upper water lifting area is equipped with a particle monitor 18, the signal in the "electromagnetic valve 3 which can be automatically opened and closed according to the received signal" refers to the real-time monitoring of the expansion height of the particles in the cylinder by the particle monitor 18, if the particle monitor 18 finds that the expansion height of the particles in the cylinder is higher than the set value, it sends an "opening" signal to the central control system, at this time the central control system sends an "opening" signal to the electromagnetic valve 3, after receiving the "opening" signal, the electromagnetic valve opens the valve to discharge the excess particles in the cylinder; if the particle monitor 18 finds that the expansion height of the particles in the device is lower than the set value, the central control system sends a "closing" signal to the electromagnetic valve, and the electromagnetic valve 3 closes the valve.

[0017] Preferably, the top of the cylinder is equipped with a nutrient liquid adding device 27, when the circulating pump 10 is started, the central control system sends an "opening" signal to the electromagnetic valve at the bottom of the nutrient liquid adding device 27, the electromagnetic valve opens, and the nutrient liquid automatically flows into the cylinder; the nutrient liquid adding device 27 has a liquid volume metering structure 28, which automatically closes when 10ml of liquid flows out each time; when the circulating pump 10 is started, the electromagnetic valve is automatically opened once every 2 days, i.e. 4 cycles; the nutrient liquid helps the rapid reproduction of bacteria and improves the speed of flocculation.

[0018] A method for rapid granulation of suspended solids in a factory shrimp culture system, using the device for rapid granulation of suspended solids in the factory shrimp culture system, and the device uses a sequencing batch water inlet mode to granulate the biological floc, that is, first start the water inlet pump to inlet water into the device, then start the circulating pump 10 to implement internal circulation, then stand still, and finally drain water; then repeat the above operation; after the floc is granulated, the circulating pump 10 is closed, the gas valve is opened, and the aeration part at the bottom of the gas lifting pipe 4 implements aeration, under the action of gas, the water in the culture pond enters the cylinder through the tangential inlet pipe two 11 and the tangential inlet pipe two 33, and then flows to the water lifting area through the gas lifting effect of the transverse gas lifting pipe 23, some small particles will settle at the bottom of the water lifting area, and then return to the cylinder through the small holes on the double-ring water suction pipe 17; the supernatant after the granular material in the water lifting area is settled flows to the culture pond through the transverse gas lifting pipe 23.

[0019] Preferably, a turbidity sensor is installed in the shrimp culture pond to monitor the concentration of suspended solids in the shrimp culture pond in real time, if the concentration of suspended solids is higher than the set value, and the particle expansion height in the cylinder is lower than the set value, the signal is sent to the central control system, and the central control system sends an "open" signal to the circulating pump after processing and analysis, under the action of the circulating pump, the hydraulic shear force on the biological floc in the device is increased, and the granulation rate of the floc is improved; at this time, if the particle expansion height in the device is higher than the set value, an "open" signal is sent to the electromagnetic valve 3, and the electromagnetic valve 3 discharges excess particles in the cylinder from the device; in this way, on the one hand, the rapid granulation of the biological floc can be realized, and on the other hand, the accurate regulation and control of the concentration of the biological floc in the shrimp pond can be ensured.

[0020] The beneficial effects of the present application are:

[0021] 1) The device improves the shear force on the biological floc by innovative water distribution structure and increasing internal circulation, and can realize rapid granulation of the biological floc under continuous flow process conditions, the time for the floc to form particles is shortened to within 7 days, and the performance is significantly better than that of other sludge granulation reactors.

[0022] 2) The device can automatically regulate and control the concentration of the biological floc in the shrimp culture system, control the biological floc at a reasonable level, realize resource utilization of the floc, and effectively solve the problem that the high concentration of the floc in the middle and late stages of culture affects the growth of shrimps.

[0023] 3) By using the unique morphological structure of the floc granular sludge, the inner and outer layers of the granule grow aerobic bacteria and anaerobic bacteria respectively, the simultaneous removal of nitrogen and phosphorus in the culture water can be realized, the problem of continuous increase of nitrogen and phosphorus concentration in the culture water in the middle and late stages of culture can be effectively solved, and the treatment difficulty and cost of the tail water of culture are further reduced;

[0024] 4) The device uses air stripping method to suck the water to the device during operation, and then realizes the granulation of the floc, which reduces the investment cost of water pump and other equipment, and also reduces the operation energy consumption of the device; at the same time, the air stripping pipe and the pipe of the circulating pipeline extending from the top of the self-cylinder are designed in an integrated form, because the air stripping and the circulating pump do not work at the same time, the pipeline realizes the function of double sharing, and the structure of the device is simplified.

[0025] 5) The device has reasonable structure, high efficiency and practicality, small floor area, high ammonia nitrogen treatment load, and can be designed into a large enough filter to meet the needs of system carrying capacity under the condition that the environmental conditions are allowed.

[0026] 6) The device does not need to inoculate bacteria when starting, and directly uses the biological floc in the prawn culture water body for granulation, which avoids the risk of prawn infection with harmful bacteria from outside, and the use of the existing bacteria culture particles in the culture pond is more stable, and the water quality treatment performance is also better. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is the structure diagram of the annular blow-off pipe in the application.

[0028] Figure 2 is the front view of the air stripping pipe and its bottom double-ring water suction pipe, and the bottom eight-shaped baffle.

[0029] Figure 3 is the perspective view of the air stripping pipe and its bottom double-ring water suction pipe, and the bottom eight-shaped baffle.

[0030] Figure 4 is the top view of the air stripping pipe and its bottom double-ring water suction pipe.

[0031] Figure 5 is the appearance diagram of the device for quickly granulating suspended matter in the factory prawn culture system.

[0032] Figure 6 is the structural detail view of the device for quickly granulating suspended matter in the factory prawn culture system, wherein (a) is the B-B sectional view in (b), and (b) is the front view.

[0033] Figure 7 is the top view of the structure of the device for quickly granulating suspended matter in the factory prawn culture system.

[0034] 1: drain hole; 2: annular drain pipe; 3: electromagnetic valve; 4: gas lift pipe; 5: "8" shaped baffle; 6: fine hole; 7: inner annular pipe; 8: outer annular pipe; 9: support; 10: circulating pump; 11: tangential water inlet three; 13: annular water distribution cavity; 14: conical structure; 16: annular particle interception plate; 17: double-ring water suction pipe; 18: particle monitor; 19: aeration pipe; 20: gas valve; 21: gas pipe; 22: circulating pipe; 23: transverse gas lift pipe; 24: round hole 2; 25: particle settling zone; 26: water outlet; 27: nutrient liquid adding device; 28: liquid volume metering structure; 30:

[0035] tangential water inlet one; 33: tangential water inlet two. DETAILED DESCRIPTION

[0036] The application will be further described below in combination with the drawings and specific examples.

[0037] The biological floc automatic control device has a cylindrical barrel, and is divided into upper, middle and lower three regions. The lower layer is a water distribution zone, which is uniformly designed with three tangential water inlets, two of which (tangential water inlet one 30 and tangential water inlet two 33) are provided with check valves at the opening, and one tangential water inlet three 11 is communicated with the top of the barrel through a PVC pipe.

[0038] Referring to Figure 6 , an annular water distribution cavity 13 is arranged at the outer ring of the bottom of the cylindrical barrel. The water flow in the culture pond is lifted in the barrel and flows into the barrel of the biological floc rapid granulation device along the annular gap at the bottom of the water distribution cavity through the two tangential water inlets (tangential water inlet one 30 and tangential water inlet two 33).

[0039] Referring to Figure 6 , a conical structure 14 is designed at the bottom of the barrel. The water flow forms a circular motion in the barrel, and the pressure on the biological floc at the barrel wall is higher than that at the conical part due to the presence of the conical structure 14. Under the action of this pressure difference, the biological floc in the barrel gathers at the conical part. The extracellular polymeric substance secreted between the bacteria promotes the combination of the biological flocs, and then forms particles.

[0040] Referring to Figure 1 , the upper part of the annular water distribution cavity 14 has an annular drain pipe 2, which is provided with a plurality of small holes with a diameter of 0.5 cm. The outer end of the annular drain pipe 2 is provided with an electromagnetic valve 3, which can be automatically opened and closed according to the received signal, so as to discharge excess particles in the device.

[0041] Referring to Figure 6The signal mainly refers to the particle monitor 27 installed on the upper part of the device, which can monitor the expansion height of the particles in the device in real time. If the particle monitor 27 finds that the expansion height of the particles in the device is higher than the set value, it sends an "open" signal to the central control system, and at this time the central control system sends an "open" signal to the electromagnetic valve. After receiving the "open" signal, the electromagnetic valve opens the valve to discharge the excess particles in the device. If the particle monitor 27 finds that the expansion height of the particles in the device is lower than the set value, the central control system sends a "close" signal to the electromagnetic valve, and the electromagnetic valve closes the valve. The upper part of the device is designed with a ring-shaped particle interception plate 16, which is mainly used to block the small particles that directly rise with the water flow. The ring-shaped particle interception plate 16 is equipped with double-ring water suction pipes 17, which are connected to the circulating pump 10 outside the ring-shaped pipe device. When the circulating pump 10 is started, the biological floc in the upper part of the device is pumped into the water inlet of the lower water distribution area through the fine holes. The lower part of the inner ring-shaped pipe is equipped with an "eight" shaped baffle on both sides, which is used to block the small particles that directly rise with the water flow from the bottom of the device. Figure 3 And Figure 4 The double-ring water suction pipe 17 is uniformly distributed with 2mm fine holes on the upper and lower parts, and the circulating pump 10 outside the ring-shaped pipe device is connected. When the circulating pump 10 is started, the biological floc in the upper part of the device is pumped into the water inlet of the lower water distribution area through the fine holes. The lower part of the inner ring-shaped pipe is equipped with an "eight" shaped baffle on both sides, which is used to block the small particles that directly rise with the water flow from the bottom of the device.

[0042] The device adopts a sequential batch water inlet mode to pelletize the biological floc, that is, first start the water inlet pump to inlet water into the device, then start the circulating pump to circulate, then stand still, and finally drain water, and then repeat the operation. After the floc is pelletized, the circulating pump is closed, the gas valve is opened, and the aeration pipe is aerated. Under the action of gas, the water in the culture pond enters the device through the tangential water inlet pipe, and then flows to the particle settling area through the horizontal gas lifting pipe 23. Some small particles will settle at the bottom of this area and return to the device through the ring-shaped small holes. The supernatant of the particle settling area flows into the culture pond. The height of the horizontal gas lifting pipe 23 from the water surface is 2-3cm.

[0043] Continuing to refer to Figure 6 The top of the device is equipped with a nutrient liquid adding device 27. When the circulating water pump is started, the central control system sends an "open" signal to the electromagnetic valve at the bottom of the nutrient liquid adding device, and the electromagnetic valve opens the valve. The nutrient liquid automatically flows into the device. The nutrient liquid adding device is designed with a liquid volume metering structure 28. Every time 10ml flows out, the electromagnetic valve automatically closes. When the circulating water pump is started, the electromagnetic valve automatically opens once every 4 cycles (2 days). The nutrient liquid helps the rapid reproduction of bacteria and improves the speed of floc pelletization.

[0044] The turbidity sensor is installed in the prawn culture pond to monitor the concentration of suspended solids in the prawn culture pond in real time. If the concentration of suspended solids is higher than the set value and the particle expansion height in the device is lower than the set value, the signal is sent to the central control system, and the central control system sends an "on" signal to the circulating water pump after processing and analysis. Under the action of the circulating water pump, the hydraulic shear force on the biological floc in the device increases, which improves the particle formation rate of the floc. At this time, if the particle expansion height in the device is higher than the set value, an "on" signal is sent to the electromagnetic valve, and the electromagnetic valve discharges excess particles from the device. In this way, on the one hand, the rapid particle formation of the biological floc can be achieved, and on the other hand, the accurate regulation and control of the concentration of the biological floc in the prawn pond can be ensured.

[0045] The particles formed in the device are spherical, and the particle size is generally greater than 0.5 mm. Since the particles have a multi-layer structure, i.e., the outer layer is an aerobic zone and the inner layer is an anoxic or anaerobic zone, the particles contain various bacteria such as nitrifying bacteria, denitrifying bacteria, anaerobic ammonia oxidation bacteria, and denitrifying phosphate-accumulating bacteria, which can achieve simultaneous nitrogen and phosphorus removal, reduce the concentration of nitrogen and phosphorus, maintain the stability of the water quality of the prawn culture system, and thus ensure the healthy growth of prawns.

[0046] As a specific example corresponding to the drawings, the device is cylindrical with a total height of 1.4 meters and a diameter of 0.45 m. The reactor is started by using a gap-type water inlet method, i.e., water is pumped in for 10 minutes, the circulating water pump is turned on for 9 hours, the device is left for 2 hours and 40 minutes, and then water is discharged for 10 minutes, after which the operation is repeated, and one cycle period is 12 hours. The specific method is as follows: turn on the water inlet pump for 10 minutes, pump the water in the culture pond into the device, and close the check valves at the tangential water inlets 1 and 2. Then turn off the water inlet pump and turn on the circulating pump. The culture water in the device is pumped from the upper part to the tangential water inlet 3 in the bottom water distribution area, and the water body circulates in the device. Due to the unique water distribution structure at the bottom of the device, the biological floc in the water body forms a rotating flow, which helps the formation of particles. At this time, the nutrient solution adding device is automatically turned on to automatically drip 10 ml of nutrient solution required for bacterial growth, which promotes the rapid formation of particles. Turn off the circulating water pump after 9 hours of operation, and then leave the device for 2 hours and 40 minutes. Then turn on the drain valve and discharge water for 10 minutes. After completing one cycle, start the next cycle by turning on the water inlet pump for 10 minutes.

[0047] After the device runs for 7 days, flocs are formed in the bottom region, at this time, the circulating water pump is closed, the air inlet valve is opened, the aeration pipe at the lower part of the air-lift pipe in the device starts aeration, under the action of aeration, the check valves at the tangential water inlets 1 and 2 are automatically opened, the water in the aquaculture pond is sucked into the device, and under the action of collision and extrusion of the original particles in the device, the biological flocs in the water body are gradually granulated, and the interception amount of the device for biological flocs and particles is increased due to the interception of the upper annular particle interception plate and the "eight" shaped baffle of the device, thereby improving the flocculation and granulation effect.

[0048] With the increase of the days of shrimp culture, the concentration of biological flocs in the aquaculture water body gradually increases, and since the device is running all the time, the particles in the device will also gradually increase. When the particle expansion height in the device is higher than the set value, the electromagnetic valve of the blow-off port is automatically opened, and the excess particles in the device are discharged through the particle discharge device. If the particle monitor finds that the particle expansion height in the device is lower than the set value, the electromagnetic valve closes the valve.

[0049] If the turbidity in the shrimp culture pond is higher than the set value, and the particle expansion height in the device is lower than the set value, the circulating water pump is opened, and the water body in the upper layer of the device is pumped to the tangential water inlets in the water distribution area, further promoting the granulation rate of the flocs. At this time, if the particle expansion height in the device is higher than the set value, the electromagnetic valve 3 of the blow-off port is opened, and the excess particles in the device are discharged from the device.

[0050] The above is the preferred embodiment of the present application, and those skilled in the art can also make respective changes or improvements on this basis, and these changes or improvements should be within the scope of protection of the present application without departing from the general concept of the present application.

Claims

1. A device for rapid granulation of suspended matter in a factory shrimp farming system, characterized in that: it comprises a cylindrical barrel, which is internally divided into upper, middle and lower regions; the lower region is a water distribution zone, and the outer periphery of the barrel corresponding to the water distribution zone is provided with an annular water distribution cavity (13), which is uniformly provided with three tangential water inlets, namely tangential water inlet one (30), tangential water inlet two (33) and tangential water inlet three (11); the tangential water inlet three (11) is connected to the top of the barrel through a pipe and a circulating pump (10), the circulating pump (10) draws water from the top of the barrel and injects it into the water distribution zone from the tangential water inlet three (11), thereby realizing the circulation of water in the barrel; the middle region is a granular matter storage and sedimentation zone; the upper region is a water lifting zone, which comprises a double-ring water suction pipe (17) that is densely provided with water suction holes (6), and the double-ring water suction pipe (17) is connected to a gas lifting pipe (4) located at its center, the gas lifting pipe (4) is integrated with the pipe that extends into the barrel from the top, and the lateral wall of the gas lifting pipe (4) extends a horizontal gas lifting pipe (23) that extends outside the barrel and forms a water outlet (26); the water in the culture pond enters the annular water distribution cavity (13) along the tangential water inlet two (33) and the tangential water inlet one (30) under the action of negative pressure generated by gas lifting in the barrel, and then flows into the barrel along the gap at the bottom of the annular water distribution cavity (13); the barrel is arranged in the culture water, and the height of the water surface is higher than the double-ring water suction pipe (17) and lower than the horizontal gas lifting pipe (23); immediately above the annular water distribution cavity (13) is a ring-shaped sewage discharge pipe (2) that is densely provided with sewage discharge holes (1), and the outer end of the ring-shaped sewage discharge pipe (2) is provided with an electromagnetic valve (3) that can be automatically opened and closed according to received signals, which is used to discharge excess particles in the barrel; a conical structure is arranged in the water distribution zone at the bottom of the barrel, and the water flow forms a circular motion in the barrel during gas lifting and water lifting by the circulating pump (10), and due to the presence of the conical structure, the pressure on the biological floc at the barrel wall is higher than that at the conical part, under the action of this pressure difference, the biological floc in the barrel gathers at the top of the conical part, and the extracellular polymeric substance secreted between bacteria promotes the combination of biological flocs, thereby forming particles; the double-ring water suction pipe (17) is composed of an inner annular pipe (7), an outer annular pipe (8) and a support (9), the inner annular pipe (7) and the outer annular pipe (8) are connected through the support (9), the double-ring water suction pipe (17) is uniformly provided with 2mm holes on the upper and lower parts, and the double-ring water suction pipe (17) forms active water flow circulation through the circulating pump (10) of the gas lifting pipe (4), when the circulating pump (10) is started, the biological floc at the upper part of the barrel is pumped into the tangential water inlet three (11) inlet of the water distribution zone at the lower part through the holes. An annular particle interception plate (16) is arranged below the double-ring water suction pipe (17) in the water lifting zone, which is used to block the small particles that directly rise with the water flow. The lower part of the inner annular pipe (7) is provided with an "eight" shaped baffle (5) for blocking the small particles that directly rise with the water flow from the bottom of the barrel. ​ ​ ​ ​ ​ ​ 2. The device for rapid particulation of suspended solids in a factory-like shrimp farming system according to claim 1, characterized in that: ​ 3. The device for rapid particulation of suspended solids in a factory-like shrimp farming system according to claim 1, characterized in that: ​ 4. The device for rapid particulation of suspended solids in a factory-like shrimp farming system according to claim 1, characterized in that: The tangential water inlet one (30) and the tangential water inlet two (33) are provided with check valves.

5. The device for rapid particulation of suspended solids in a factory-like shrimp farming system according to claim 1, characterized in that: The upper layer is the lower part of the water lifting area, and the barrel side wall is provided with a particle monitor (18). The signal refers to the real-time monitoring of the particle monitor (18) on the expansion height of the particles in the barrel. If the particle monitor (18) finds that the expansion height of the particles in the barrel is higher than the set value, the "open" signal is sent to the central control system. At this time, the central control system sends the "open" signal to the electromagnetic valve (3), and the electromagnetic valve receives the "open" signal and opens the valve to discharge the excess particles in the barrel to the discharge device. If the particle monitor (18) finds that the expansion height of the particles in the device is lower than the set value, the central control system sends the "close" signal to the electromagnetic valve, and the electromagnetic valve (3) closes the valve.

6. The device for rapid particulation of suspended solids in a factory-like shrimp farming system according to claim 1, characterized in that: The top of the barrel is provided with a nutrient liquid adding device (27). When the circulating pump (10) is opened, the central control system sends the "open" signal to the electromagnetic valve at the bottom of the nutrient liquid adding device (27). The electromagnetic valve is opened, and the nutrient liquid automatically flows into the barrel. The nutrient liquid adding device (27) has a liquid volume metering structure (28). Each time 10ml flows out, the electromagnetic valve is automatically closed. When the circulating pump (10) is opened, the electromagnetic valve is automatically opened every 2 days, i.e. every 4 cycles. The nutrient liquid helps the rapid reproduction of bacteria and improves the speed of flocculent particle formation.

7. A method for rapid particulation of suspended matter in a factory shrimp farming system, characterized by: The device is used in the factory-like prawn breeding system of any one of claims 1-6, and The device uses a sequencing batch water inlet mode to granulate the biological flocculent, that is, first start the water inlet pump to inlet water into the device, then start the circulating pump (10) to implement internal circulation, then stand still, and finally discharge water. Then repeat the above operation. After the flocculent is granulated, the circulating pump (10) is closed, the gas valve is opened, and the aeration component at the bottom of the gas lifting pipe (4) implements aeration. Under the action of gas, the water in the breeding pond enters the barrel through the tangential water inlet one (30) and the tangential water inlet two (33), and then flows to the water lifting area through the gas lifting of the transverse gas lifting pipe (23). Some small particles will settle at the bottom of the water lifting area and return to the barrel through the small holes on the double-ring water suction pipe (17). The supernatant of the water lifting area after particle settlement flows to the breeding pond through the transverse gas lifting pipe (23).

8. The method for rapid particulation of suspended solids in a factory-style shrimp farming system of claim 7, wherein: A turbidity sensor is installed in the prawn breeding pond to monitor the concentration of suspended solids in the prawn breeding pond in real time. If the concentration of suspended solids is higher than the set value and the expansion height of the particles in the barrel is lower than the set value, the signal is sent to the central control system. After processing and analysis, the central control system sends the "open" signal to the circulating pump. Under the action of the circulating pump, the hydraulic shear force on the biological flocculent in the device increases, which improves the granulation rate of the flocculent. At this time, if the expansion height of the particles in the device is higher than the set value, the "open" signal is sent to the electromagnetic valve (3), and the electromagnetic valve (3) discharges the excess particles in the barrel to the discharge device. In this way, on the one hand, the rapid granulation of the biological flocculent can be realized, and on the other hand, the accurate regulation and control of the concentration of the biological flocculent in the prawn pond can be ensured.

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