527 results about "Shrimp" patented technology

The invention discloses a multi-objective optimization decision control method for shrimp and silkworm polyculture environment parameters, and relates to the technical field of polyculture control. The method comprises the following steps: deploying a water quality sensor network, and combining prawn and nereis growth monitoring equipment; extracting criticality of environmental parameters and biological growth indexes by using historical breeding data and experimental data; constructing a dynamic coupling model, and establishing a dynamic model of the polyculture system based on a differential equation; developing a hybrid optimization algorithm to balance the competition and symbiotic relationship between the prawns and the nereis; and generating a control instruction set based on an optimization result, and adjusting the control equipment through a fuzzy PID controller. According to the invention, intelligent regulation and control of shrimp and silkworm polyculture environment parameters are realized, and economic benefits of shrimp and silkworm polyculture are improved.

The invention relates to an intelligent breeding method for crayfish offspring seeds in a winter fallow field, and belongs to the technical field of aquaculture. In order to solve the problems of dissolved oxygen management lag, high ammonia nitrogen accumulation risk and overlarge energy consumption caused by low utilization rate of winter fallow fields and dependence of water quality regulation and control on artificial experience in the prior art, the method comprises the following steps: deploying a water quality dynamic monitoring system based on the Internet of Things to collect data of water temperature, dissolved oxygen, pH value, ammonia nitrogen and nitrite in real time; the power and the water level of the oxygenation equipment are dynamically adjusted after analysis of the edge calculation module; graded regulation and control are achieved by combining a three-level response mechanism, when the dissolved oxygen content is lower than 6 mg / L or the pH value is abnormal, the power of the nanometer oxygenation device is started to 50%, and when the dissolved oxygen content continuously deteriorates, the irrigation system is linked to inject the water body with the temperature being adjusted in advance. According to the method, through intelligent multi-parameter cooperative control and ecological bait design, the resource utilization rate of the winter fallow field is increased, the survival rate of the young crayfish is increased to 85% or above, and the method is suitable for large-scale and green efficient breeding of the young crayfish in a rice-shrimp rotation mode.

The invention provides a high-activity chitinase mutant and application thereof in degradation of crustacean waste, and belongs to the technical field of enzyme engineering and agricultural waste conversion. According to the invention, chitinase PbChi from Paenibacillus barengltzii is subjected to molecular modification, and a plurality of chitinase mutants with high activity are successfully constructed by increasing the flexibility of a connexin, changing steric hindrance at a substrate catalytic crack inlet and changing catalytic residues in a beta sheet layer in a catalytic structural domain through calculation design and experimental verification; the chitinase mutant can effectively degrade shrimp shell meal, so that carapace waste is effectively utilized, and the chitinase mutant has a wide application prospect in the biological feed industry.

The invention discloses a pretreatment method for efficiently extracting calcium in shrimp and crab shells. The pretreatment method comprises the following steps: carrying out microwave treatment on the shrimp and crab shells until the weight is constant, rehydrating for 10 minutes in a water bath at 90 DEG C, carrying out microwave treatment until the weight is constant, crushing, mixing with an acetic acid solution, stirring, centrifuging, and measuring the calcium concentration. According to the method, through microwave-rehydration-secondary microwave pretreatment, the carapace structure is destroyed, the contact area of organic acid and calcium is increased, the calcium recovery rate is increased, the treatment time is shortened, the energy consumption is reduced, the universality of raw materials is enhanced, comprehensive utilization of resources is facilitated, and the method is environmentally friendly and economical.

The invention relates to the technical field of aquaculture water quality prediction, in particular to a procambarus clarkii aquaculture water quality prediction method fusing LSTM and an Internet of Things sensing network. According to the technical scheme, the method comprises the steps that time sequence water quality parameters of a culture pond are obtained, dynamic sliding window preprocessing is conducted on data, an LSTM prediction model of a mixed gating mechanism is constructed, and a culture equipment control instruction is generated according to a prediction result. Through fusion of the Internet of Things sensing network and the improved LSTM model, the problems of insufficient utilization of spatio-temporal data, weak model adaptability and disjunction of prediction control in a traditional method are effectively solved, spatio-temporal correlation fusion and noise correction of multi-source water quality data are realized, water quality parameters are accurately predicted, the ammonia nitrogen mutation risk is synchronously detected, and the method is suitable for large-scale popularization and application. Therefore, artificial experience driving of breeding management is promoted to be converted into accurate data driving, a real-time dynamic environment regulation and control scheme is provided for healthy growth of shrimps, the breeding risk is remarkably reduced, and the management efficiency is improved.

The invention relates to the technical field of waterfowl habitat recovery, in particular to a geranium wilfordii pause habitat recovery method. The method comprises the steps of selection of a suitable pause habitat, terrain transformation of the pause habitat, vegetation adjustment of the pause habitat, water body control of the pause habitat and specific food source supplementation: small fishes are regularly put and matched with benthic organisms such as shrimps and snails, so that smooth feeding of the geranium wilfordii is effectively ensured, the method is suitable for pause of the geranium wilfordii, and the health of geranium wilfordii populations is favorably improved; and a reference thought and practical reference significance are provided for geranium wilfordii population recovery.

The utility model discloses a shrimp and crab breeding bin and a breeding device. The shrimp and crab breeding bin comprises a bin body (7) serving as a shrimp and crab breeding bin body. The bin body is provided with a water-permeable side wall; n feeding holes (8) are formed in the side wall of the bin body; n is an integer greater than 1; a feed pipe is inserted into the feeding hole, so that bait can enter the bin body through the feed pipe and the feeding hole; and at least one feeding hole is a feeding hole with a block piece. A material pipe fixing piece for fixing a material pipe is arranged at the side part or the upper edge of the bin body; the number of the material pipe fixing pieces is N; the material pipe fixing piece is a pipe clamp or a sleeve and is used for clamping or inserting a material pipe. The shrimp and crab breeding bin and the breeding device are easy to implement and high in breeding efficiency.

The invention discloses a tail water treatment method and system based on industrial aquaculture of South America white shrimps, and relates to the technical field of aquaculture tail water treatment.The method comprises the steps that a tail water purification integrated device containing a microfilter, a protein separator and other components is obtained, and pretreatment, biological treatment and deep treatment nodes of the tail water treatment process are extracted; corresponding nodes and device components are correlated and mapped to obtain three corresponding processing channels, then tail water component data are collected, control parameters are analyzed based on the three processing channels, and tail water closed-loop processing is carried out. The technical problems that an existing treatment mode for the industrial aquaculture tail water of the South America white shrimps is difficult to achieve standard treatment, high in treatment cost and poor in synergism of all links are solved, and the technical effects that the industrial aquaculture tail water of the South America white shrimps is efficiently treated, the treatment cost is reduced, operation is more convenient and faster, and the synergism of all links is better are achieved.

[Problem] To provide a method for acclimatizing saltwater shrimps, a method for growing saltwater shrimps by an aquaponics, a system for acclimatizing saltwater shrimps, and an aquaponics, with which it becomes possible to improve the efficiency of land-based aquaculture of saltwater shrimps and surely promote the growing of saltwater shrimps. [Solution] This method for acclimatizing saltwater shrimps A to a low-salt environment is characterized by including a salt concentration reduction step for reducing the salt concentration in rearing water 111 in which the saltwater shrimps A are reared, wherein the salt concentration in the rearing water 111 is reduced by 0.10-0.50 mass% per day. This system 1 for acclimatizing saltwater shrimps is provided with: a storage part 11 for storing rearing water 111 in which the saltwater shrimps A are reared; and a salt concentration reduction part 12 for reducing the salt concentration in the rearing water 111 stored in the storage part 11, wherein the salt concentration in the rearing water 111 is reduced by 0.10-0.50 mass% per day. The rearing water 111 is made into rearing water 112 having a lower salt concentration than that in the rearing water 11 through the salt concentration reduction part 12.

The invention provides a method for detecting fluorine compounds in shrimps, which comprises the following steps: S1, sample preparation: removing shells of to-be-detected shrimps, and crushing and homogenizing muscular tissues of the to-be-detected shrimps to obtain a to-be-detected sample; s2, extraction: extracting a sample to be detected, retaining an organic phase, and concentrating to obtain a concentrated solution; then adding water which is 5-15 times of the concentrated solution for dilution to obtain a to-be-purified solution; the extraction solvent is an aqueous solution of an organic solvent; s3, purification: purifying the to-be-purified liquid by using a solid-phase extraction column to obtain a purified liquid; s4, concentration and constant volume: concentrating the purified liquid to be nearly dry, redissolving, and filtering to obtain filtrate; and S5, sample detection: detecting the filtrate by using a liquid chromatograph-mass spectrometer, and carrying out qualitative and quantitative analysis on the fluorine compounds in the prawns by adopting a standard curve method. The method can be used for simultaneously determining the contents of 41 PFASs compounds with different physicochemical properties in shrimps.

The invention belongs to the technical field of carbon materials, and relates to a coal tar-based nitrogen-sulfur co-doped porous carbon material and a preparation method thereof.The coal tar-based nitrogen-sulfur co-doped porous carbon material is prepared from waste coal tar as a carbon source, animal hair as a carbon source, a nitrogen source and a sulfur source, shrimp and crab shells as a nitrogen source and a template agent and strong base as an activating agent through hydrothermal carbonization and high-temperature activation. The carbon material with high specific surface area and adjustable pore structure is obtained, and contains a certain amount of heteroatom nitrogen and sulfur. The shrimp and crab shell particles are used as a template agent to provide internal initial pores; in the hydrothermal pre-carbonization process, a high-temperature alkali solution can quickly dissolve hair to form polypeptide substances, so that the polypeptide substances in a pyrolysis product are uniformly mixed with tar, alkali, crustacean particles and the like, and uniform co-doping of nitrogen and sulfur is facilitated. The problems of low carbon production rate, serious graphitization, low porosity, difficulty in directional regulation and control of a pore structure and low content of heteroatoms in tar in the prior art are solved, and the specific surface area of the porous carbon material is increased.

The invention discloses a factory-like breeding facility and method for crayfish fry, and belongs to the technical field of crayfish breeding. The facility comprises a breeding bed frame and a spray seedling cultivation pond, a plurality of breeding cylinders which operate independently are placed on the breeding bed frame, meshes are arranged in the breeding cylinders in the horizontal direction, the breeding cylinders are divided into upper and lower independent spaces including an incubation area and an egg collection area by the meshes, a plurality of groups of shrimp nests placed on the meshes are arranged in the incubation area, and a plurality of shrimp nest units are arranged in each group of shrimp nests; a seedling outlet pipe is arranged at the bottom of the breeding cylinder; the method comprises the following steps: selecting and putting egg-carrying parent shrimps, artificially incubating fry, managing and controlling the incubation process, and collecting the fry. Through precise regulation and control of multiple parameters such as water temperature, dissolved oxygen, pH and the like, parent health management and automatic spray fry collection system integration, optimization of a crayfish industrialized breeding technology is achieved, the survival rate of the parent, the synchronous incubation rate and the hatching rate of fertilized eggs are improved, the specification and quality of spray fry are guaranteed, and therefore the yield and quality of crayfish industrialized breeding are improved.

The invention belongs to the technical field of aquaculture equipment, and discloses shrimp and crab culture feeding equipment based on water quality-weather linkage, which comprises a support base, a feed bin fixedly connected to the top of the support base, and a conveying assembly mounted at the bottom of the feed bin and used for conveying feed and poison bait in the feed bin; the throwing device is arranged in the middle of the supporting base and used for throwing the feed and the poison bait conveyed by the conveying assembly; through cooperation of a rotating plate, a second motor and other structures, the orientation position of the material throwing device is adjusted conveniently, the rotating plate is driven to rotate through a gear at the output end of the second motor and teeth on the outer side of the rotating plate, and the rotating plate drives a supporting rod and a first telescopic rod to drive the material throwing device to rotate; and the orientation of the throwing opening of the throwing device is adjusted, so that non-fixed-point throwing is realized.

The invention discloses a simulation method and system for comprehensive utilization of tail water in a rice and shrimp planting and breeding area based on digital twinning, and particularly relates to the technical field of digital twinning and computer simulation. The method is used for solving the problem that an existing digital twinborn model depends on mathematical speculation to cause systematic cognitive deviation of a simulation result during simulation in a large number of areas without monitoring data in a rice and shrimp planting and breeding area. By acquiring monitoring data and a physical topological structure, a simulation area is divided, and a key data blank sub-area is identified; calculating the potential contribution degree of the state change of each key area to downstream monitoring data and the monitoring data change difference caused by the state change of each key area under different hydraulic paths; the simulation uncertainty level of each key area is evaluated according to the analysis result; and finally, adjusting a water quality simulation calculation strategy of a corresponding region in the digital twin model based on the grade, and operating the model to output a tail water comprehensive utilization simulation result. And the reliability of the whole simulation result and the scientificity of decision support are improved.

The invention discloses dsRNA for targeted regulation of a freshwater shrimp PKA-R1 gene and an obtaining method and application of the dsRNA, and belongs to the technical field of biology.Firstly, the freshwater shrimp PKA-R1 gene is obtained, then a gene segment with the sequence of SEQ ID NO: 3 is obtained through RNA interference and other technologies, dsPKA-R1 is synthesized through the gene segment, and after the synthesized dsPKA-R1 is injected into the pericardial cavity of a freshwater shrimp, it is proved that the dsPKA-R1 can slow down growth of the freshwater shrimp through growth parameter comparison.

The invention relates to the technical field of intelligent feeding for aquaculture, in particular to an intelligent feeding device for aquaculture, which comprises a supporting cross frame, a supporting walking mechanism for supporting the supporting cross frame and a material storage shell arranged on the supporting cross frame, a material inlet is formed in the material storage shell, a material distribution shell is arranged below the material storage shell, and a feeding port is formed in the material distribution shell. A communicating piece is installed between the material distributing shell and the material storing shell, and feed enters the material distributing shell through the communicating piece. A lowering part is arranged on the supporting transverse frame and used for being connected with the material distribution shell; the supporting transverse frame is moved to the position above the aquaculture pond, floating foam on the water surface is intelligently separated and removed through the multiple floating foam removing pieces at the multiple material guiding pipes, and then multi-point and uniform material scattering is conducted on the interior of the aquaculture pond through the material guiding pipes and the material scattering mechanism; the uniformity of automatic feeding of the feed is further guaranteed, and meanwhile it is guaranteed that the shrimps in aquaculture are fully fed.

The invention discloses a sensor for indicating freshness and a preparation method and application thereof, and belongs to the technical field of food quality monitoring. According to the composite natural pigment colorimetric sensor, hydroxypropyl methyl cellulose and sodium alginate are used as polymer substrates, a film substrate is formed by combining the polymer substrates with a film-forming aid glycerol, and alkannin and curcumin are loaded on the film-forming substrate. The sensor can visually judge or compare the freshness degree of salmon by observing the color change of the intelligent sensor, the freshness change is clear at a glance, the sensor can also be used for detecting the freshness of penaeus vannamei, the application prospect is wide, and a new thought is provided for development and application of a novel aquatic product freshness intelligent response sensor.

The invention provides a device and a method for purifying culture circulating water in a higher-place pond, and the method specifically comprises the following steps: the culture circulating water and residual feed and excrement in the higher-place pond flow out from a sewage draining exit at the center of the pond bottom, and gradually flow into a self-settling filter well through a water inlet at the bottom of the well; aquaculture circulating water is filtered by an immersion filtering device in the well and overflows out of the well, and residual feed and excrement settle to the bottom of the well and then are discharged through a shrimp shell excrement drain outlet; the breeding circulating water overflowing out of the well flows through a hypochlorous acid oxidation device to be disinfected; the culture circulating water treated by the hypochlorous acid oxidation device flows into an aeration dechlorination tank to remove harmful gas; the culture circulating water treated by the aeration dechlorination tank flows into the ecological tank, so that the contents of carbon, nitrogen, phosphorus and the like in the water are reduced; and the culture circulating water treated by the ecological pond is pumped into the higher-place pond through a reflux pump. The system is efficient, energy-saving, small in occupied area, high in automation degree and capable of improving the water quality management efficiency and stability of higher-place pond culture circulating water.

The invention relates to the technical field of aquatic product fishing tools, in particular to an automatic lifting intelligent shrimp catching cage which comprises an equipment body, an upper computer and a lower computer. The equipment body comprises a shrimp catching cage, a floating ring and an equipment box, a plurality of shrimp inlets are formed in the front side and the rear side of the shrimp catching cage, the left side is rotationally connected with a shrimp outlet door, a pneumatic rod is installed at the top end, the output end of the pneumatic rod is connected with the shrimp outlet door through a connecting rod, and two air pipes b are arranged on the outer side; according to the scheme, the air bag, the pneumatic rod and the related air pipe are arranged in the shrimp catching cage, and equipment such as the air pump and the air distributor is combined, so that automatic lifting of the shrimp catching cage and automatic opening and closing of the shrimp outlet door are achieved; when the cage is placed, the air bag is free of air, and the shrimp catching cage sinks by gravity; when the cage is collected, the air pump conveys air to enable the air bag to expand to drive the shrimp catching cage to float upwards, and then the air channel is controlled to enable the pneumatic rod to open the shrimp outlet door to take shrimps. Therefore, the manual operation links are greatly reduced, the labor intensity is reduced, and the shrimp catching efficiency is improved.

The invention relates to the technical field of phenotype measurement in aquatic genetic breeding, in particular to a macrobrachium rosenbergii small-size shrimp high-throughput phenotype measurement method and measurement system. According to the method, a camera obscura environment is constructed through a white shooting bottom plate, a dark extinction inner wall and an LED area array light source in a measuring box body, and illumination is adaptively adjusted by combining rough segmentation of a preview and analysis of a local gray histogram, so that stable bimodal gray distribution is formed between a shrimp body and a background. On the basis, a segmentation-key point combined deep learning model is adopted, a shrimp body mask and a standard key point are output at the same time, topological consistency loss constraints of a framework side length proportion and an included angle are introduced in training, and key point mismarking and drifting caused by the transparent body color are remarkably reduced. According to the method, rapid, non-contact, high-precision and high-throughput measurement of macrobrachium rosenbergii small-specification individual phenotype parameters and weight is realized, and a high-quality structured phenotype database is provided for genetic evaluation and multi-character combined selection.

The invention discloses a simple suspension type rotary water quality monitoring material platform device, and belongs to the technical field of aquaculture equipment. The device is composed of a land supporting table, a rotating bent pipe and a shrimp feed throwing table, the land supporting table comprises a rotating base with a through hole and supporting legs, the rotating bent pipe is of an inverted-U-shaped structure, one end of the rotating bent pipe is rotationally connected with the rotating base and extends to the bottom of a shrimp feed barrel, and the other end of the rotating bent pipe is in linkage with the shrimp feed throwing table through a water suction pump. The shrimp feed throwing table comprises a base plate and peripheral supporting rods, the discharging end of the rotating bent pipe is fixed to the center of the base plate, throwing holes are formed in the periphery of the rotating bent pipe to achieve uniform diffusion of shrimp feed, an integrated conveying system and a rotary feeding structure are adopted, accurate scattered throwing of the shrimp feed is achieved, and the risk of water pollution is effectively reduced; meanwhile, through centralized storage and automatic control, the feeding efficiency is remarkably improved, manual intervention and material waste are reduced, and a uniform feeding environment is provided for shrimp growth.

To provide a holder and a fishing rig equipped with the holder that support the joint between the head and body of a shrimp to prevent the head from falling off, enable easy attachment of the shrimp, and accommodate different shrimp sizes. [Solution] The holder 130 of the present invention is a holder for holding the joint between the head and body of a shrimp B impaled on a main hook 112, and comprises a flexible cylindrical body 131, the cylindrical body 131 is provided with a slit 132 formed along its longitudinal direction, and the cylindrical body 131 is positioned to cover the joint between the head and body of the shrimp B.

1. Name of the designed product: fish bait (shrimp shape). 2. Use of the designed product: the designed product is used for fish bait for fishing. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view 1.

According to the technical scheme, the sheltering device is characterized by comprising a plurality of layers of flexible rope nets, the rope nets are horizontally arranged and arranged in the vertical direction, the rope nets are sequentially connected, the two sides of the rope net on the top layer are connected with supporting rods respectively, the supporting rods are connected with floating blocks, and the floating blocks are connected with the rope nets on the bottom layer. The rope net on the bottom layer is connected with a sinking block, and a telescopic piece is connected between the supporting rods and used for adjusting the distance between the two supporting rods. The multi-layer rope net can provide rest and sheltering for shrimps in the molting period in a culture water body and avoid similar disabilities, and the telescopic piece is arranged so that the distance between the supporting rods can be adjusted at any time, and therefore the size of meshes of the rope net can be adjusted, and the multi-layer rope net can adapt to shrimps of different specifications and growth stages.

The present invention discloses a feed additive for secondary spawning of red claw crayfish, as well as its preparation method and application. The present invention comprises the following components: 29.5-30.5% bait powder, 24.5-25.5% methyl farnesate, 9.5-10.5% schizochytrium powder, 9.5-10.5% Porphyridium powder, 7-8% 5-hydroxytryptamine creatinine sulfate, 9.5-10.5% linseed oil, and 7-8% alanine hydroxamic acid; the bait powder is a mixture of lugworm powder and squid viscera powder in a weight ratio of 4-6:5. The present invention also provides a preparation method for the above-mentioned feed additive. The feed additive of the present invention is added to conventional shrimp feed to prepare a compound shrimp feed for feeding the first batch of spawning shrimp of red claw crayfish. The present invention can significantly promote the gonadal development of spawning shrimp of red claw crayfish, rapidly mature their ovaries in a short period of time, improve the spawning rate of spawning shrimp obtained therefrom, and thereby increase the supply of shrimp fry.

The invention provides an extraction and purification process for producing astaxanthin based on a fermentation method, which specifically comprises the following steps: step 1, preparing materials: selecting shrimp shells, cleaning the shrimp shells, removing impurities doped in the shrimp shells, and then putting the cleaned shrimp shells into a dehydration device for dehydration; step 2, pretreatment; 3, extraction: putting the pretreated shrimp shells into an extraction kettle for extraction; step 4, separation; and step 5, saponification treatment. When the device is used, shrimp shells enter the inner container through the feeding pipe, a cleaning agent enters the water inlet pipe, the cleaning agent enters the inner container through the filtering holes to soak the shrimp shells, and the supporting columns drive the stirring plates to rotate to stir materials during soaking; and in the later period, the supporting column drives the stirring plate to rotate and stir, and meanwhile the materials are conveniently pushed to the position between the connecting cylinder and the discharging cylinder through a scraper on the connecting column.

The invention provides a flat field ditch-free shrimp breeding ecological cycle system based on soil-water body cooperative regulation and control. The flat-field ditch-free shrimp breeding ecological circulation system based on soil-water cooperative regulation and control comprises the steps that S1, a flat-field ditch-free shrimp breeding pond is constructed in a breeding area; s2, configuring a water body circulation system, wherein the water body circulation system comprises a water body flowing device, a water quality purification device and a water quality monitoring device; s3, adjusting nutrient exchange between the soil layer and the water body layer by arranging a soil-water body coordinated regulation device. According to the flat-field ditch-free shrimp breeding ecological cycle system based on soil-water body cooperative regulation and control, an environment monitoring and intelligent adjusting system is combined, parameters such as temperature, humidity, oxygen concentration, pH value, ammonia nitrogen and nitrite are monitored in real time, and micro-ecological conditions are automatically adjusted based on a fuzzy logic control algorithm; therefore, the breeding benefit is effectively improved, and the negative influence of the breeding environment is reduced.

The invention discloses a method for combining straw returning to field, pond fish culture and rice, fish and soft-shelled turtle / shrimp comprehensive planting and breeding, and belongs to the technical field of rice, soft-shelled turtle, fish and shrimp comprehensive planting and breeding. After rice in the rice field is harvested, straw is smashed and returned to the field, a hidden survival place is provided for crayfish seedlings, rotten straw and derived zooplankter provide bait for crayfish and fish, and the straw decomposition rate is increased by eating; after water in the rice field module becomes serious along with straw rotting, the water is discharged into the culture pond through tail water treatment engineering treatment, and the water fertility of the pond is increased; meanwhile, after eutrophication of the water body in the culture pond, the water body is discharged into the rice field after being treated by a tail water treatment project and flows into the culture pond again after being further purified by the rice field. According to the constructed mode, the straw is converted into the organic fertilizer through the crayfish and the fish, and the paddy field is adopted for purifying pond culture tail water. No breeding wastewater is discharged in the mode. The investment of aquatic product baits and rice field fertilizers is reduced, and the income and quality of rice and fishes are increased.

An inland, factory-scale, seawater aquaculture tailwater treatment and reuse system includes a sedimentation tank, a truss scraper, an aerated biological filter, a lift pump, a three-stage anaerobic fermentation tank, an algae-bacteria symbiotic wind screen ecosystem, and a medium-pressure ultraviolet disinfector. Wastewater passes through a horizontal flow sedimentation tank to separate solid particles and suspended matter, such as leftover bait and fish and shrimp excrement. The supernatant passes through an aerated biological filter equipped with brush filter media to further physically intercept fine suspended matter and biochemically decompose harmful substances. The truss scraper deposits sediment in the sedimentation tank's sludge accumulation area. The sediment undergoes anaerobic fermentation in a three-stage anaerobic fermentation tank, trapping fecal matter and removing insect eggs and pathogenic microorganisms. The algae-bacteria symbiotic wind screen ecosystem's spraying device is connected to a collection device to remove ammonia, nitrite, and nitrate nitrogen from the water. The effluent is sterilized and disinfected in a medium-pressure ultraviolet disinfector before being reused in the aquaculture pond. This ensures that the aquaculture tailwater meets standard treatment and is recycled, significantly reducing aquaculture costs.

The present invention discloses a shrimp fishing net for removing other marine life, which is in the field of fishing nets. The net comprises a fishing net body, a support frame and a net bag provided at each end of the fishing net body, the support frame being fixedly connected to a first partition net, at least two first sliding blocks being slidably connected to the side walls of the fishing net, the first sliding blocks being respectively fixed to a second partition net and a third partition net, the first partition net, the second partition net, and the third partition net all having open ends, the second partition net being located between the first and second partition nets, and a switching assembly being slidably connected to the inner side wall of the second partition net. The present invention, by providing three layers of partition nets, can change the shape of one end of the fishing net's fishing port to different shapes. During and after the change of the fishing port of the fishing net, since the vertical net always remains vertical, the filter net always remains perpendicular to the vertical net, and the two continuously work in synergy, thereby remedying the problem of the prior art inconvenience in continuously catching shrimp when removing other marine life.