Biological floc mediated land-based prawn culture pond water pushing and dirt collecting device

Abstract

The invention relates to the technical field of prawn culture water pushing and sewage collecting, in particular to a biofloc-mediated land-based barrel prawn culture pond water pushing and sewage collecting device. A main air supply pipe is arranged in the land-based barrel, one end of the main air supply pipe is connected to an air blower, the other end of the main air supply pipe is connected to a plurality of sub air supply pipes, and the plurality of sub air supply pipes are spliced to form a three-dimensional support; a water body pushing mechanism is embedded in the three-dimensional support formed by the multiple sub air supply pipes, the water body pushing mechanism comprises a left side plate and a right side plate, the left side plate and the right side plate are in the same right triangle shape and are symmetrically distributed, and bevel baffles are installed on the bevel edges of the left side plate and the right side plate which are symmetrically distributed. According to the device, one-way flowing surges can be formed on the water surface through the inclined baffle, organic pollutants can be subjected to sewage collection treatment and water aeration, the ecological effect of biological floccules is maintained, and the prawn culture survival rate is increased.

Description

Technical Field

[0001] The invention relates to the technical field of water pushing and sewage collecting in shrimp culture, and in particular to a water pushing and sewage collecting device for a land-based round barrel shrimp culture pond mediated by biological flocs. Background Art

[0002] The shrimp belongs to the order Decapoda of the class Crustacea of ​​the phylum Arthropoda. The shrimp has a plump body, long and laterally flattened, slightly fusiform, with a short head and thorax, a strong and powerful abdomen, and the head and body are closely connected. There is a pair of long whiskers, i.e. antennae. Generally, female shrimps are bluish white, 13 to 24 cm long, weighing about 50 to 80 grams, and the largest can reach 30 cm and weigh 250 grams; while male shrimps are egg yellow, 13 to 18 cm long, and weigh 30 to 50 grams. The shrimp is an annual large economic shrimp that grows rapidly. It reproduces from April to June every year. The young shrimp undergoes multiple molting and metamorphosis, and grows into shrimps in September and October. It is an important economic aquatic animal, widely distributed in shallow seas and coastal areas in tropical and subtropical areas. Prawns are slender in shape, have hard shells, and are rich in protein and nutrients. They are the most common shrimp species in aquaculture. However, in the process of artificial shrimp farming, the surface of the farming water is usually static or has multi-directional surges of artificial waves, which greatly reduces the flow activity of the farming water and causes a large number of biological flocs to settle, making it difficult for the biological flocs to improve the farming water quality environment and promote the healthy growth of shrimp, increasing the mortality rate of shrimp farming. Summary of the invention

[0003] The invention overcomes the shortcomings of the prior art and provides a biofloc-mediated land-based drum shrimp culture pond water pushing and sewage collecting device.

[0004] To achieve the above object, the technical solution adopted by the present invention is:

[0005] The present invention provides a biofloc-mediated land-based drum shrimp culture pond water pushing and sewage collecting device, the device comprising a land-based drum:

[0006] A main air supply pipe is arranged inside the land-based drum, one end of the main air supply pipe is connected to the blower, and the other end of the main air supply pipe is connected to the sub-air supply pipe. There are multiple sub-air supply pipes, and the multiple sub-air supply pipes are spliced ​​to form a three-dimensional bracket;

[0007] A water pushing mechanism is embedded on a three-dimensional bracket composed of multiple sub-air supply pipes, and the water pushing mechanism includes a left plate and a right plate. The left plate and the right plate are both in the same right-angled triangle shape and are symmetrically distributed. Inclined baffles are installed on the hypotenuses of the left plate and the right plate in the symmetrical distribution.

[0008] Furthermore, in a preferred embodiment of the present invention, a plurality of nano aeration tubes are installed at the bottom of the three-dimensional support, which can be used to generate nano-scale dissolved oxygen bubbles in the land-based barrel aquaculture water body, and the plurality of nano aeration tubes are immersed under the aquaculture water body.

[0009] Furthermore, in a preferred embodiment of the present invention, a gas valve is provided at the position where the main air supply pipe is connected to the sub-air supply pipe at the upper end of the three-dimensional support, which can be used to control the ventilation volume of the blower.

[0010] Furthermore, in a preferred embodiment of the present invention, the inclination angle of the inclined baffle can be adjusted according to the actual depth of the aquaculture water body.

[0011] Furthermore, in a preferred embodiment of the present invention, the inclination angle of the inclined baffle can be adjusted within a range of 15° to 45°.

[0012] Furthermore, in a preferred embodiment of the present invention, a sewage collection port is provided at the center of the bottom of the land-based drum, and the sewage collection port is used to collect and centrally discharge organic pollutants generated during the shrimp farming process.

[0013] Furthermore, in a preferred embodiment of the present invention, a fluid sensor is installed inside the land-based barrel, and the fluid sensor is used to detect the wave surge energy level and fluid activity of the aquaculture water body in real time.

[0014] The second aspect of the present invention provides a control method for a biofloc-mediated land-based drum shrimp culture pond water pushing and sewage collecting device, which is applied to any of the biofloc-mediated land-based drum shrimp culture pond water pushing and sewage collecting devices described above, and specifically comprises the following steps:

[0015] Acquire multi-dimensional shrimp farming data of a land-based drum shrimp farming pond, and calculate and process the multi-dimensional shrimp farming data by fluid simulation software to construct a shrimp farming simulation model of the land-based drum shrimp farming pond;

[0016] Obtaining the preset flow characteristics of organic pollutants, constructing the pollution collection area of ​​the pollution collection outlet based on the opening position and caliber specification parameters of the pollution collection outlet, performing random planning on the path of organic pollutants flowing from the current distribution position to the pollution collection area, obtaining a random flow pollution collection path, analyzing the random flow pollution collection path according to the preset flow characteristics, and obtaining the wave surge energy necessary to push the organic pollutants to quickly reach the pollution collection outlet;

[0017] Based on the wave surge energy condition, shrimps are simulated to be cultured in the shrimp culture simulation model to obtain the simulated suspension and sedimentation state of the bioflocs in the simulated culture process, and a state model diagram of the simulated suspension and sedimentation state is constructed, which is defined as the first state model diagram;

[0018] Obtaining the expected shrimp farming demand, extracting the ideal suspension and sedimentation state that the biofloc needs to maintain during the farming process in the land-based drum shrimp farming pond according to the expected shrimp farming demand, and constructing a state model diagram of the ideal suspension and sedimentation state, which is defined as the second state model diagram;

[0019] The hash algorithm is introduced to calculate the state difference between the first state model diagram and the second state model diagram to obtain the hash state function. The ideal flow activity index required for the aquaculture water in the land-based drum shrimp aquaculture pond to drive the biofloc to reach the ideal suspension sedimentation state is determined according to the hash state function.

[0020] The actual flow activity index of the simulated aquaculture is obtained, the difference between the ideal flow activity index and the actual flow activity index is calculated, and the flow activity index deviation value is obtained. The spatial position and direction of the water body propulsion mechanism are adjusted in combination with the wave surge energy and the flow activity index deviation value.

[0021] Furthermore, in a preferred embodiment of the present invention, the preset flow characteristics of organic pollutants are obtained, the pollution collection area of ​​the pollution collection outlet is constructed based on the opening position and caliber specification parameters of the pollution collection outlet, the path of the organic pollutants flowing from the current distribution position to the pollution collection area is randomly planned to obtain a random flow pollution collection path, and the random flow pollution collection path is analyzed according to the preset flow characteristics to obtain the wave surge energy necessary to push the organic pollutants to quickly reach the pollution collection outlet, which specifically includes the following steps:

[0022] Obtain the type characteristics of organic pollutants in land-based drum shrimp farming ponds, and obtain the knowledge map of shrimp aquaculture based on the big data network;

[0023] The type characteristics of the organic pollutants are traversed and identified through the shrimp aquaculture knowledge graph to output the preset flow characteristics of the organic pollutants under different aquaculture water flow rate conditions;

[0024] Obtain the opening position and caliber specification parameters of the sewage collection outlet in the land-based drum shrimp breeding pond, set the sewage collection action field benchmark based on the opening position and caliber specification parameters, define the sewage collection action range in the shrimp breeding simulation model with the sewage collection action field benchmark as a constraint condition, and obtain the sewage collection action field of the sewage collection outlet;

[0025] Construct the state coordinate space of the pollution collection field, obtain the current spatial distribution coordinates of organic pollutants in the land-based drum shrimp farming pond based on the shrimp farming simulation model, introduce the Markov chain to calculate the probability distribution of transferring from the current spatial distribution coordinates to a certain spatial distribution coordinate in the state coordinate space, and generate a random probability distribution matrix;

[0026] According to the random probability distribution matrix, the current spatial distribution coordinates are updated in the state coordinate space of the land-based drum shrimp culture pond to obtain the current update step number. If the current update step number is greater than the preset update step number, the update operation is stopped to obtain the random spatial distribution coordinates of the organic pollutants arriving at the sewage collection port;

[0027] Plan the path of random flow of organic pollutants from the current spatial distribution coordinates to the corresponding random spatial distribution coordinates, which is defined as the random flow collection path, and simultaneously obtain the actual weight parameters of organic pollutants and the expected collection rate;

[0028] The thrust coefficient for pushing the organic pollutants to reach the desired collection rate on the random flow collection path is calculated based on the preset flow characteristics and actual weight parameters, and the wave surge energy necessary to push the organic pollutants to quickly reach the collection port is determined based on the thrust coefficient.

[0029] Furthermore, in a preferred embodiment of the present invention, the following steps are also included:

[0030] Obtaining the aquaculture water volume of the land-based drum shrimp aquaculture pond, and constructing the dissolved oxygen saturation field of the aquaculture water body inside the land-based drum shrimp aquaculture pond based on the aquaculture water volume;

[0031] The simulated dissolved oxygen concentration data in the aquaculture water of the land-based drum shrimp aquaculture pond is obtained through the shrimp aquaculture simulation model, and the simulated dissolved oxygen data is fitted to the dissolved oxygen saturation field to obtain the saturation distribution field of the global dissolved oxygen concentration in the aquaculture water;

[0032] Obtaining a shrimp farming log, extracting a high-frequency activity point map of the shrimp through the shrimp farming log, dividing the dissolved oxygen saturation field into N sub-saturation fields according to the high-frequency activity point map, and extracting a simulated saturation density value of each sub-saturation field based on the saturation distribution field;

[0033] The expected saturation density threshold is preset. If the simulated saturation density value is higher than the expected saturation density threshold, the sub-saturation area corresponding to the simulated saturation density value is marked as a qualified dissolved oxygen area;

[0034] If the simulated saturation density value is lower than the expected saturation density threshold, the sub-saturation area corresponding to the simulated saturation density value is marked as an unqualified dissolved oxygen area, and the activity area where the unqualified dissolved oxygen area is located in the land-based drum shrimp culture pond is planned in the high-frequency activity point map, which is defined as the abnormal dissolved oxygen activity area;

[0035] The aeration volume of the nano aeration tube is controlled based on the simulated saturated density value of the abnormal dissolved oxygen activity area to increase the dissolved oxygen content and dissolved oxygen distribution in the aquaculture water.

[0036] The beneficial technical effects of the present invention are:

[0037] The present invention can form a unidirectional flow surge on the water surface of the land-based barrel by arranging an inclined baffle in the land-based barrel, thereby improving the flow activity of the barrel aquaculture water body, keeping the biological flocs flowing without settling, and maintaining the ecological effect of the flocs; at the same time, a plurality of nano aeration tubes are arranged at the bottom of the inclined baffle, and air is input by a blower and transported through the main air supply pipe and the sub-air supply pipe to be aerated and converted from the nano aeration tubes into nano-level dissolved oxygen bubbles, thereby increasing the dissolved oxygen content in the water body and improving the survival rate of aquatic animals; a sewage collection port is also opened at the bottom of the land-based cylinder, and during the shrimp aquaculture process, feed residues and shrimp shells can be concentrated at the sewage outlet in the center of the pool with the water flow, thereby achieving the effect of centralized discharge and treatment of organic pollutants and improving the quality of aquaculture water. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, drawings of other embodiments can be obtained based on these drawings without paying creative work.

[0039] Figure 1 It is the overall structural diagram of the device;

[0040] Figure 2 It is a schematic diagram of the cross-sectional structure of a land-based drum;

[0041] Figure 3 It is a schematic diagram of the cross-sectional structure of the water propulsion mechanism located inside the land-based barrel.

[0042] The following are the descriptions of the reference numerals:

[0043] 101. land-based drum; 102. main air supply pipe; 103. blower; 104. sub-air supply pipe; 105. three-dimensional bracket; 106. nano aeration tube; 107. gas valve; 108. left side plate; 109. right side plate; 201. inclined baffle; 202. sewage collection port. DETAILED DESCRIPTION

[0044] In order to more clearly understand the above-mentioned purposes, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the structures related to the present invention. It should be noted that the embodiments in this application and the features in the embodiments can be combined with each other without conflict.

[0045] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the invention, unless otherwise specified, "multiple" means two or more.

[0046] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood by specific circumstances.

[0047] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, 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 make the disclosure of the present invention more thoroughly understood.

[0048] like Figure 1-3 As shown, the first aspect of the present invention provides a biofloc-mediated land-based drum shrimp culture pond water pushing and sewage collecting device, and the device includes a land-based drum 101.

[0049] A main air supply pipe 102 is provided inside the land-based drum 101, one end of the main air supply pipe 102 is connected to the blower 103, and the other end of the main air supply pipe 102 is connected to a sub-air supply pipe 104. There are multiple sub-air supply pipes 104, and the multiple sub-air supply pipes 104 are spliced ​​to form a three-dimensional bracket 105.

[0050] A plurality of nano-aeration tubes 106 are installed at the bottom of the three-dimensional support 105 , which can be used to generate nano-scale dissolved oxygen bubbles in the aquaculture water of the land-based drum 101 , and the plurality of nano-aeration tubes 106 are immersed under the aquaculture water.

[0051] A gas valve 107 is provided at the position where the main air supply pipe 102 is connected to the sub-air supply pipe 104 at the upper end of the three-dimensional bracket 105, and can be used to control the ventilation volume of the blower 103.

[0052] It should be noted that a certain amount of aquaculture water is injected into the land-based barrel 101 and the required shrimps are put in. During the shrimp aquaculture process in the land-based barrel 101, the blower 103 can be started to uniformly input air into the sub-air supply pipe 104 through the main air supply pipe 102. The input air will fill the interior of the three-dimensional bracket 105 composed of multiple sub-air supply pipes 104, and then the input air will be transported to the nano aeration pipe 106 through the three-dimensional bracket 105. At this time, the nano aeration pipe 106 can convert the air into dissolved oxygen bubbles at the nano level of several hundred nanometers or several micrometers to produce an appropriate amount of dissolved oxygen in the aquaculture water, thereby increasing the dissolved oxygen content of the aquaculture water in the land-based barrel shrimp aquaculture pond and improving the survival rate of aquatic animals. When the blower 103 inputs air into the main air supply pipe 102, the air volume input by the blower 103 can be adjusted by controlling the gas valve 107, thereby ensuring the generation of ideal nano-sized dissolved oxygen bubbles. At the same time, the rate of nano-aeration can be controlled, the accuracy and reliability of dissolved oxygen regulation can be improved, and the aeration of shrimp farming can be controlled.

[0053] A water propulsion mechanism is embedded in the three-dimensional bracket 105 composed of multiple sub-air supply pipes 104, and the water propulsion mechanism includes a left plate 108 and a right plate 109. The left plate 108 and the right plate 109 are both in the same right-angled triangle shape and are symmetrically distributed. Inclined baffles 201 are installed on the hypotenuses of the left plate 108 and the right plate 109 in the symmetrical distribution.

[0054] The inclination angle of the inclined baffle 201 can be adjusted according to the actual depth of the aquaculture water body.

[0055] The inclination angle of the inclined baffle 201 can be adjusted in the range of 15° to 45°.

[0056] It should be noted that the water pushing mechanism and the three-dimensional support 105 are placed together at the bottom of the land-based barrel 101. The 15° to 45° inclination angle of the inclined baffle 201 on the water pushing mechanism can form a unidirectional flow surge on the aquaculture water surface in the land-based barrel 101, which can improve the flow activity of the aquaculture water in the land-based barrel 101. In this process, the biological flocs in the water body always remain active under the continuous action of the unidirectional flow surge, thereby maintaining the high fluidity of the biological flocs, achieving the effect of non-settling of the biological flocs, maintaining the ecological effect of the biological flocs on shrimp farming, further improving the cleanliness and stability of the shrimp farming water quality, and ensuring the growth quality of shrimp farming; in addition, the enhanced water flow activity achieved by the unidirectional surge can promote the uniform distribution of dissolved oxygen, water body heat and nutrients, and inhibit the growth of harmful microorganisms.

[0057] A sewage collection port 202 is provided at the bottom center of the land-based drum 101 , and the sewage collection port 202 is used to collect and discharge organic pollutants generated during the shrimp farming process.

[0058] A fluid sensor is installed inside the land-based drum 101, and the fluid sensor is used to detect the wave surge energy level and fluid activity of the aquaculture water body in real time.

[0059] It should be noted that during the shrimp farming process of the land-based drum 101, organic pollutants such as feed residues and shrimp shells can be concentrated to the sewage collection port 202 opened in the center of the land-based drum 101 under the one-way surge flow environment of the water flow, so as to quickly collect and discharge organic pollutants generated by shrimp farming, avoid these organic pollutants from being retained in the farming water body and causing damage to the water environment, reduce the phenomenon of a sharp increase in the mortality rate of shrimp farming caused by pollution of the living environment, and improve the healthy growth level of shrimp. At the same time, during the shrimp farming process, the fluid sensor inside the land-based drum 101 will detect the wave surge energy level and fluid activity of the farming water body in real time. When the one-way flow of the water body is difficult to meet the deviation from the expected effect, the device can be adjusted and controlled to avoid the one-way surge water flow causing large suspension and sedimentation errors of the biological flocs, thereby improving the reliability of the positive effect of the biological flocs on shrimp farming.

[0060] In summary, this water pusher can make the water flow in one direction, promote the flocs to be suspended in the water and not sink to the bottom; it can make the residual bait and large particles such as feces and shrimp shells accumulate in the central sewage outlet, which is beneficial to sewage discharge; at the same time, the airflow can increase the dissolved oxygen in the water. In addition, each land-based cylindrical shrimp breeding pond can be equipped with 3 to 5 water pushers, depending on the area of ​​the land-based cylindrical shrimp breeding pond, and 1 water pusher can be installed for 15 square meters.

[0061] The second aspect of the present invention provides a control method for a biofloc-mediated land-based drum shrimp culture pond water pushing and sewage collecting device, which is applied to any of the biofloc-mediated land-based drum shrimp culture pond water pushing and sewage collecting devices described above, and specifically comprises the following steps:

[0062] Acquire multi-dimensional shrimp farming data of a land-based drum shrimp farming pond, and calculate and process the multi-dimensional shrimp farming data by fluid simulation software to construct a shrimp farming simulation model of the land-based drum shrimp farming pond;

[0063] Obtaining the preset flow characteristics of organic pollutants, constructing the pollution collection area of ​​the pollution collection outlet based on the opening position and caliber specification parameters of the pollution collection outlet, performing random planning on the path of organic pollutants flowing from the current distribution position to the pollution collection area, obtaining a random flow pollution collection path, analyzing the random flow pollution collection path according to the preset flow characteristics, and obtaining the wave surge energy necessary to push the organic pollutants to quickly reach the pollution collection outlet;

[0064] Based on the wave surge energy condition, shrimps are simulated to be cultured in the shrimp culture simulation model to obtain the simulated suspension and sedimentation state of the bioflocs in the simulated culture process, and a state model diagram of the simulated suspension and sedimentation state is constructed, which is defined as the first state model diagram;

[0065] Obtaining the expected shrimp farming demand, extracting the ideal suspension and sedimentation state that the biofloc needs to maintain during the farming process in the land-based drum shrimp farming pond according to the expected shrimp farming demand, and constructing a state model diagram of the ideal suspension and sedimentation state, which is defined as the second state model diagram;

[0066] The hash algorithm is introduced to calculate the state difference between the first state model diagram and the second state model diagram to obtain the hash state function. The ideal flow activity index required for the aquaculture water in the land-based drum shrimp aquaculture pond to drive the biofloc to reach the ideal suspension sedimentation state is determined according to the hash state function.

[0067] The actual flow activity index of the simulated aquaculture is obtained, the difference between the ideal flow activity index and the actual flow activity index is calculated, and the flow activity index deviation value is obtained. The spatial position and direction of the water body propulsion mechanism are adjusted in combination with the wave surge energy and the flow activity index deviation value.

[0068] It should be noted that the device mainly sets a water propulsion mechanism in the land-based cylindrical shrimp culture pond, and forms a unidirectional flow surge on the water surface of the barrel through the inclined baffle on the water propulsion mechanism, so as to improve the flow activity of the land-based cylindrical culture water body. However, if the inclined baffle of the water propulsion mechanism is not in the right spatial position and direction in the land-based cylinder, it may make it difficult for the water surface to form a continuous and stable unidirectional flow surge with appropriate wave surge energy, making the water flow activity less than the ideal flow activity to ensure that the biological flocs do not settle, resulting in an unreasonable distribution of the suspended and settled states of the biological flocs in the water body of the land-based cylindrical shrimp culture pond, and the shrimp cannot grow healthily. Therefore, this method analyzes the adjustment of the water propulsion mechanism by constructing a shrimp farming simulation model of a land-based cylindrical shrimp farming pond, reducing the tedious adjustment steps of manual field tests, saving time and effort, and eliminating the intervention errors caused by human experiments, and improving the reliability of the spatial placement of the water propulsion mechanism in the land-based cylindrical shrimp farming pond; since the sewage collection port opened in this device can centrally treat organic pollutants, the key factor of organic pollutants flowing to the sewage collection port under the impetus of unidirectional water flow waves should be fully considered when adjusting the water propulsion mechanism. This is to reasonably plan and adjust the water propulsion mechanism according to the required driving wave surge energy One of the important indicators; by using the shrimp farming simulation model to simulate farming under the wave surge energy to further obtain the suspension and sedimentation state of the biofloc, the simulated state is the suspension and sedimentation state closest to the actual farming, and the hash state function expresses the deviation of the current suspension and sedimentation state of the biofloc compared to the ideal state, which indirectly reflects the ideal flow activity required by the farming water body when the biofloc reaches the ideal suspension and sedimentation state from the current state, and the deviation value between the actual flow activity and the ideal flow activity is an optimization quantity to eliminate the gap between the current suspension and sedimentation state and the ideal sedimentation state. This method can accurately and efficiently calculate and analyze the adjustment control of the device based on the unidirectional surge demand, thereby ensuring that the suspension and sedimentation of the biofloc meets the rationality of the surge flow required for farming, and improving the quality and survival rate of shrimp farming.

[0069] Furthermore, in a preferred embodiment of the present invention, the preset flow characteristics of organic pollutants are obtained, the pollution collection area of ​​the pollution collection outlet is constructed based on the opening position and caliber specification parameters of the pollution collection outlet, the path of the organic pollutants flowing from the current distribution position to the pollution collection area is randomly planned to obtain a random flow pollution collection path, and the random flow pollution collection path is analyzed according to the preset flow characteristics to obtain the wave surge energy necessary to push the organic pollutants to quickly reach the pollution collection outlet, which specifically includes the following steps:

[0070] Obtain the type characteristics of organic pollutants in land-based drum shrimp farming ponds, and obtain the knowledge map of shrimp aquaculture based on the big data network;

[0071] The type characteristics of the organic pollutants are traversed and identified through the shrimp aquaculture knowledge graph to output the preset flow characteristics of the organic pollutants under different aquaculture water flow rate conditions;

[0072] Obtain the opening position and caliber specification parameters of the sewage collection outlet in the land-based drum shrimp breeding pond, set the sewage collection action field benchmark based on the opening position and caliber specification parameters, define the sewage collection action range in the shrimp breeding simulation model with the sewage collection action field benchmark as a constraint condition, and obtain the sewage collection action field of the sewage collection outlet;

[0073] Construct the state coordinate space of the pollution collection field, obtain the current spatial distribution coordinates of organic pollutants in the land-based drum shrimp farming pond based on the shrimp farming simulation model, introduce the Markov chain to calculate the probability distribution of transferring from the current spatial distribution coordinates to any spatial distribution coordinates in the state coordinate space, and generate a random probability distribution matrix;

[0074] According to the random probability distribution matrix, the current spatial distribution coordinates are updated in the state coordinate space of the land-based drum shrimp culture pond to obtain the current update step number. If the current update step number is greater than the preset update step number, the update operation is stopped to obtain the random spatial distribution coordinates of the organic pollutants arriving at the sewage collection port;

[0075] Plan the path of random flow of organic pollutants from the current spatial distribution coordinates to the corresponding random spatial distribution coordinates, which is defined as the random flow collection path, and simultaneously obtain the actual weight parameters of organic pollutants and the expected collection rate;

[0076] The thrust coefficient for pushing the organic pollutants to reach the desired collection rate on the random flow collection path is calculated based on the preset flow characteristics and actual weight parameters, and the wave surge energy necessary to push the organic pollutants to quickly reach the collection port is determined based on the thrust coefficient.

[0077] It should be noted that this device has the function of collecting and discharging pollutants such as feed residues and shrimp shells, and these organic pollutants are collected at the sewage collection port by relying on the unidirectional surge propulsion of the aquaculture water body to achieve gradual flow. Since the spatial position and direction of the planned water body propulsion mechanism depend on the water body flow activity, and the water body activity is closely related to the wave surge energy, it is necessary to determine the wave surge energy that meets the ideal water body flow activity under the premise of ensuring that the organic pollutants can reach the sewage collection port. Since there is a certain randomness in the migration of organic pollutants due to water flow, that is, the flow path is not unique, and the collection range is relatively limited under the position and diameter of the sewage collection port. In this regard, this method uses the state space form to calculate and analyze the random probability of organic pollutants flowing from the simulated current position to any position in the collection range (i.e., the collection action field), thereby forming a random probability distribution matrix of organic pollutants flowing to the sewage collection port under the thrust of the water body. Through this random probability distribution matrix, the random spatial distribution coordinates of organic pollutants reaching the sewage collection port can be further calculated and determined, and then the flow path from the current position coordinates to the random spatial distribution coordinates can be planned, thereby avoiding the inaccurate error phenomenon of traditional methods in analyzing the randomness of the flow of organic pollutants in water bodies, and greatly improving the accuracy and reliability of wave surge energy calculations based on the effect of organic pollutants flowing to the sewage collection port. The thrust of water flow to push organic pollutants depends on the flow characteristics and weight of organic pollutants in the water body. If the flow characteristics of organic pollutants in the water body are poor and their actual weight is large, a larger water flow thrust may be required to drive them to the sewage collection port, so as to accurately determine the wave surge energy necessary for organic pollutants to quickly reach the sewage collection port. This method can be used to calculate and analyze the random migration of organic matter flowing to the sewage collection port based on the premise of adjusting the one-way surge energy required to meet the expected requirements of the water body propulsion mechanism, improve the accuracy of the water body propulsion mechanism in changing the water surface waves, and further make the one-way surge flow of land-based cylindrical shrimp breeding ponds more ideal and more stable, reducing the unreasonable phenomenon of biological floc suspension and sedimentation flow.

[0078] Furthermore, in a preferred embodiment of the present invention, the following steps are also included:

[0079] Obtaining the aquaculture water volume of the land-based drum shrimp aquaculture pond, and constructing the dissolved oxygen saturation field of the aquaculture water body inside the land-based drum shrimp aquaculture pond based on the aquaculture water volume;

[0080] The simulated dissolved oxygen concentration data in the aquaculture water of the land-based drum shrimp aquaculture pond is obtained through the shrimp aquaculture simulation model, and the simulated dissolved oxygen data is fitted to the dissolved oxygen saturation field to obtain the saturation distribution field of the global dissolved oxygen concentration in the aquaculture water;

[0081] Obtaining a shrimp farming log, extracting a high-frequency activity point map of the shrimp through the shrimp farming log, dividing the dissolved oxygen saturation field into N sub-saturation fields according to the high-frequency activity point map, and extracting a simulated saturation density value of each sub-saturation field based on the saturation distribution field;

[0082] The expected saturation density threshold is preset. If the simulated saturation density value is higher than the expected saturation density threshold, the sub-saturation area corresponding to the simulated saturation density value is marked as a qualified dissolved oxygen area;

[0083] If the simulated saturation density value is lower than the expected saturation density threshold, the sub-saturation area corresponding to the simulated saturation density value is marked as an unqualified dissolved oxygen area, and the activity area where the unqualified dissolved oxygen area is located in the land-based drum shrimp culture pond is planned in the high-frequency activity point map, which is defined as the abnormal dissolved oxygen activity area;

[0084] The aeration volume of the nano aeration tube is controlled based on the simulated saturated density value of the abnormal dissolved oxygen activity area to increase the dissolved oxygen content and dissolved oxygen distribution in the aquaculture water.

[0085] It should be noted that dissolved oxygen is a key water quality indicator in aquaculture. It can maintain the respiration of aquatic animals, promote microbial activity, and inhibit the growth of harmful bacteria, which has a vital impact on the growth, health and aquaculture production efficiency of aquatic animals. This device is equipped with multiple nano-aeration tubes that can produce nano-level dissolved oxygen bubbles. However, when the nano-aeration tubes are not properly controlled, the phenomenon of uneven distribution of dissolved oxygen in the aquaculture water body may occur under the action of unidirectional surges, resulting in the production of local hypoxic areas, which damages the aquaculture ecological environment, which is not conducive to the high-quality and balanced aquaculture production of shrimp. In response to this, this method constructs a saturated distribution field of aquaculture water. On the one hand, the saturated distribution field can show the content of dissolved oxygen in the water body, and on the other hand, it can show its spatial distribution trend in the water body. It can better provide a complete visual analysis map basis for dissolved oxygen control. Compared with traditional control methods, it avoids manual intervention errors and reduces unnecessary calculation steps, greatly improving the efficiency and accuracy of dissolved oxygen control. The saturation state and distribution density of dissolved oxygen are further reflected by simulating the saturation density value. If the simulated saturation density value is higher than the expected saturation density threshold, it means that the dissolved oxygen concentration in the sub-saturation area tends to be saturated and the distribution is relatively uniform, so it is marked as a qualified dissolved oxygen area; otherwise, it means that the dissolved oxygen concentration in the sub-saturation area is low, showing an unsaturated state, and the distribution may be uneven, which may cause the shrimp in this area to suffer from hypoxia and discomfort. Therefore, the sub-saturation area corresponding to the simulated saturation density value is marked as an unqualified dissolved oxygen area, so it is necessary to control the nano aeration tube to supplement the dissolved oxygen in the unqualified dissolved oxygen area to eliminate the difference in dissolved oxygen concentration in the aquaculture water body, make the dissolved oxygen distribution in the bottom water more uniform, avoid the phenomenon of shrimp farming death caused by hypoxia, and improve the survival rate of aquatic animals. At the same time, it helps to inhibit the activity of anaerobic bacteria, reduce the generation of harmful substances such as hydrogen sulfide, and improve the water quality environment for shrimp farming.

[0086] The above is based on the ideal embodiment of the present invention, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A biofloc-mediated land-based drum shrimp culture pond water pushing and sewage collecting device, the device comprising a land-based drum, characterized in that: A main air supply pipe is arranged inside the land-based drum, one end of the main air supply pipe is connected to the blower, and the other end of the main air supply pipe is connected to the sub-air supply pipe. There are multiple sub-air supply pipes, and the multiple sub-air supply pipes are spliced ​​to form a three-dimensional bracket; A water pushing mechanism is embedded on a three-dimensional bracket composed of multiple sub-air supply pipes, and the water pushing mechanism includes a left plate and a right plate. The left plate and the right plate are both in the same right-angled triangle shape and are symmetrically distributed. Inclined baffles are installed on the hypotenuses of the left plate and the right plate in the symmetrical distribution.

2. A biofloc-mediated land-based drum shrimp culture pond water pushing and sewage collecting device according to claim 1, characterized in that: A plurality of nano-aeration tubes are installed at the bottom of the three-dimensional support, which can be used to generate nano-level dissolved oxygen bubbles in the land-based drum aquaculture water body, and the plurality of nano-aeration tubes are immersed under the aquaculture water body.

3. The biofloc-mediated land-based drum shrimp culture pond water pushing and sewage collecting device according to claim 1 is characterized in that: A gas valve is provided at the position where the main air supply pipe is connected to the sub-air supply pipe at the upper end of the three-dimensional support, which can be used to control the ventilation volume of the blower.

4. The biofloc-mediated land-based drum shrimp culture pond water pushing and sewage collecting device according to claim 1, characterized in that: The inclination angle of the inclined baffle can be adjusted according to the actual depth of the aquaculture water body.

5. A biofloc-mediated land-based drum shrimp culture pond water pushing and sewage collecting device according to claim 4, characterized in that: The inclination angle of the inclined baffle can be adjusted in the range of 15° to 45°.

6. A biofloc-mediated land-based drum shrimp culture pond water pushing and sewage collecting device according to claim 1, characterized in that: A sewage collection port is provided at the center of the bottom of the land-based drum, and the sewage collection port is used to collect and centrally discharge organic pollutants generated during the shrimp farming process.

7. The biofloc-mediated land-based drum shrimp culture pond water pushing and sewage collecting device according to claim 1, characterized in that: A fluid sensor is installed inside the land-based barrel, and the fluid sensor is used to detect the wave surge energy level and fluid activity of the aquaculture water body in real time.

8. A control method for a biofloc-mediated land-based drum shrimp culture pond water pushing and sewage collecting device, applied to a biofloc-mediated land-based drum shrimp culture pond water pushing and sewage collecting device according to any one of claims 1 to 7, characterized in that: The specific steps include: Acquire multi-dimensional shrimp farming data of a land-based drum shrimp farming pond, and calculate and process the multi-dimensional shrimp farming data by fluid simulation software to construct a shrimp farming simulation model of the land-based drum shrimp farming pond; Obtaining the preset flow characteristics of organic pollutants, constructing the pollution collection area of ​​the pollution collection outlet based on the opening position and caliber specification parameters of the pollution collection outlet, performing random planning on the path of organic pollutants flowing from the current distribution position to the pollution collection area, obtaining a random flow pollution collection path, analyzing the random flow pollution collection path according to the preset flow characteristics, and obtaining the wave surge energy necessary to push the organic pollutants to quickly reach the pollution collection outlet; Based on the wave surge energy condition, shrimps are simulated to be cultured in the shrimp culture simulation model to obtain the simulated suspension and sedimentation state of the bioflocs in the simulated culture process, and a state model diagram of the simulated suspension and sedimentation state is constructed, which is defined as the first state model diagram; Obtaining the expected shrimp farming demand, extracting the ideal suspension and sedimentation state that the biofloc needs to maintain during the farming process in the land-based drum shrimp farming pond according to the expected shrimp farming demand, and constructing a state model diagram of the ideal suspension and sedimentation state, which is defined as the second state model diagram; The hash algorithm is introduced to calculate the state difference between the first state model diagram and the second state model diagram to obtain the hash state function. The ideal flow activity index required for the aquaculture water in the land-based drum shrimp aquaculture pond to drive the biofloc to reach the ideal suspension sedimentation state is determined according to the hash state function. The actual flow activity index of the simulated aquaculture is obtained, the difference between the ideal flow activity index and the actual flow activity index is calculated, and the flow activity index deviation value is obtained. The spatial position and direction of the water body propulsion mechanism are adjusted in combination with the wave surge energy and the flow activity index deviation value.

9. A method for controlling a water pushing and sewage collecting device for a land-based drum shrimp culture pond mediated by biofloc according to claim 8, characterized in that: The preset flow characteristics of organic pollutants are obtained, and the pollution collection area of ​​the pollution collection outlet is constructed based on the opening position and caliber specification parameters of the pollution collection outlet. The path of organic pollutants flowing from the current distribution position to the pollution collection area is randomly planned to obtain a random flow pollution collection path. The random flow pollution collection path is analyzed according to the preset flow characteristics to obtain the wave surge energy necessary to push the organic pollutants to quickly reach the pollution collection outlet, which specifically includes the following steps: Obtain the type characteristics of organic pollutants in land-based drum shrimp farming ponds, and obtain the knowledge map of shrimp aquaculture based on the big data network; The type characteristics of the organic pollutants are traversed and identified through the shrimp aquaculture knowledge graph to output the preset flow characteristics of the organic pollutants under different aquaculture water flow rate conditions; Obtain the opening position and caliber specification parameters of the sewage collection outlet in the land-based drum shrimp breeding pond, set the sewage collection action field benchmark based on the opening position and caliber specification parameters, define the sewage collection action range in the shrimp breeding simulation model with the sewage collection action field benchmark as a constraint condition, and obtain the sewage collection action field of the sewage collection outlet; Construct the state coordinate space of the pollution collection field, obtain the current spatial distribution coordinates of organic pollutants in the land-based drum shrimp farming pond based on the shrimp farming simulation model, introduce the Markov chain to calculate the probability distribution of transferring from the current spatial distribution coordinates to a certain spatial distribution coordinate in the state coordinate space, and generate a random probability distribution matrix; According to the random probability distribution matrix, the current spatial distribution coordinates are updated in the state coordinate space of the land-based drum shrimp culture pond to obtain the current update step number. If the current update step number is greater than the preset update step number, the update operation is stopped to obtain the random spatial distribution coordinates of the organic pollutants arriving at the sewage collection port; Plan the path of random flow of organic pollutants from the current spatial distribution coordinates to the corresponding random spatial distribution coordinates, which is defined as the random flow collection path, and simultaneously obtain the actual weight parameters of organic pollutants and the expected collection rate; The thrust coefficient for pushing the organic pollutants to reach the desired collection rate on the random flow collection path is calculated based on the preset flow characteristics and actual weight parameters, and the wave surge energy necessary to push the organic pollutants to quickly reach the collection port is determined based on the thrust coefficient.

10. The control method of a biofloc-mediated land-based drum shrimp culture pond water pushing and sewage collecting device according to claim 8, characterized in that: The following steps are also included: Obtaining the aquaculture water volume of the land-based drum shrimp aquaculture pond, and constructing the dissolved oxygen saturation field of the aquaculture water body inside the land-based drum shrimp aquaculture pond based on the aquaculture water volume; The simulated dissolved oxygen concentration data in the aquaculture water of the land-based drum shrimp aquaculture pond is obtained through the shrimp aquaculture simulation model, and the simulated dissolved oxygen data is fitted to the dissolved oxygen saturation field to obtain the saturation distribution field of the global dissolved oxygen concentration in the aquaculture water; Obtaining a shrimp farming log, extracting a high-frequency activity point map of the shrimp through the shrimp farming log, dividing the dissolved oxygen saturation field into N sub-saturation fields according to the high-frequency activity point map, and extracting a simulated saturation density value of each sub-saturation field based on the saturation distribution field; The expected saturation density threshold is preset. If the simulated saturation density value is higher than the expected saturation density threshold, the sub-saturation area corresponding to the simulated saturation density value is marked as a qualified dissolved oxygen area; If the simulated saturation density value is lower than the expected saturation density threshold, the sub-saturation area corresponding to the simulated saturation density value is marked as an unqualified dissolved oxygen area, and the activity area where the unqualified dissolved oxygen area is located in the land-based drum shrimp culture pond is planned in the high-frequency activity point map, which is defined as the abnormal dissolved oxygen activity area; The aeration volume of the nano aeration tube is controlled based on the simulated saturated density value of the abnormal dissolved oxygen activity area to increase the dissolved oxygen content and dissolved oxygen distribution in the aquaculture water.

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