Ecological bait production method and equipment based on food chain

Abstract

The invention discloses an ecological bait production method based on a food chain, which comprises the following steps: S1, mixing wine brewing enzyme liquid and culture tail water in proportion, and stirring to form a nutrient medium required by microalgae growth; s2, conveying the nutrient medium into a microalgae culture module, and regulating and controlling illumination and dissolved oxygen conditions; part of microalgae is conveyed to the plankton breeding unit to cultivate plankton to construct a live bait chain; s3, tail water generated by breeding flows back to the plankton breeding unit to serve as a nutrition supplement source of plankton, and closed-loop circulation is achieved.

Description

Technical Field

[0001] This invention relates to the field of ecological bait production technology, specifically to an ecological bait production method and equipment based on the food chain. Background Technology

[0002] In the aquaculture sector, the production of ecological feed and the treatment of aquaculture wastewater are two core issues that restrict the industry's green and efficient development, and existing technologies are unable to achieve optimal synergy between the two at the same time.

[0003] In terms of ecological feed production, current methods mainly rely on single-algae cultivation or artificially formulated feed, but both have significant limitations. Single-algae cultivation is greatly affected by environmental factors such as light intensity, temperature fluctuations, and the stability of the nutrient substrate, resulting in unstable biomass production. Furthermore, the nutritional composition is limited, only meeting the basic needs of some low-feeding fish and failing to meet the diverse nutritional requirements of co-cultured herbivorous, carnivorous, and omnivorous fish. This directly leads to significant differences in growth rates and inconsistent quality among farmed fish. While artificially formulated feed can balance nutrition to some extent, it consumes large amounts of high-quality resources such as grains and fishmeal. Fishmeal, in particular, relies on marine fishery resources, and excessive use exacerbates marine ecological pressure. Simultaneously, feed production costs remain high. More importantly, the widespread use of artificial additives to improve feed shelf life and palatability leads to a decline in the quality of farmed aquatic products, resulting in lower levels of beneficial components such as unsaturated fatty acids and potential safety risks.

[0004] In the field of aquaculture wastewater treatment, existing technologies also face insurmountable bottlenecks. Physical sedimentation can only remove large particulate suspended solids from the wastewater, with a removal rate of less than 30% for dissolved pollutants such as nitrogen and phosphorus generated during aquaculture, failing to address the risk of eutrophication. While chemical treatment can rapidly reduce pollutant concentrations, chemical residues can disrupt the microecological balance of the water body, leading to secondary pollution, and the treated water cannot be reused for aquaculture, resulting in resource waste. Biofilm methods degrade pollutants through microbial metabolism, but due to the limited growth cycle and metabolic efficiency of biofilms, the treatment cycle is as long as 7-10 days, and the treated wastewater still contains a high concentration of soluble organic matter, making direct reuse difficult, resulting in a water resource utilization rate of less than 50%.

[0005] Brewing enzyme liquid is a liquid mixture containing various biological enzymes, produced or added during the brewing process. Its core function is to accelerate the biochemical reactions in the brewing raw materials through the catalytic activity of enzymes, thereby improving brewing efficiency and quality. The sugars, amino acids, vitamins, minerals, and small-molecule organic matter contained in brewing enzyme liquid provide some nutritional support for microalgae growth. However, in current technologies, brewing enzyme liquid is mostly used alone for small-scale water conditioning or single-organism cultivation, without forming a synergistic nutritional effect with aquaculture wastewater, thus hindering the green and efficient development of aquaculture. Summary of the Invention

[0006] The present invention aims to provide a food chain-based ecological feed production method and equipment, which promotes the rapid reproduction of microalgae by using aquaculture wastewater and brewing enzyme liquid, significantly increasing biomass, and the multi-trophic-level ecological chain ensures a continuous and stable supply of feed.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A food chain-based method for producing ecological bait includes:

[0009] S1. Mix the brewing enzyme liquid with the aquaculture wastewater in a certain proportion, and after stirring, form the nutrient substrate required for microalgae growth.

[0010] S2. The nutrient substrate is delivered to the microalgae culture module, and the light and dissolved oxygen conditions are regulated; some microalgae are delivered to the plankton breeding unit to cultivate plankton and build a live bait chain.

[0011] After the S3 planktonic breeding unit reproduces, the remaining liquid is discharged into the aquaculture pond through dry-wet separation to achieve a closed-loop cycle.

[0012] The optimized microalgae cultivation module promotes the growth and reproduction of microalgae and plankton by regulating light intensity, cycle, and dissolved oxygen concentration in the water.

[0013] The optimized brewing enzyme liquid is mixed with aquaculture wastewater, and the temperature and nutrients are adjusted to meet the growth needs of microalgae.

[0014] A food chain-based ecological bait production device, comprising:

[0015] A liquid treatment module is used to treat brewing enzyme liquid and aquaculture wastewater to form a nutrient substrate. The liquid treatment module includes an enzyme liquid treatment unit, a mixing tank and a wastewater treatment unit.

[0016] A microalgae culture module is used to cultivate microalgae and plankton. The microalgae culture module includes a culture space with a three-dimensional structure and an environmental control component for controlling light and dissolved oxygen.

[0017] The live bait separation and recovery module is used to separate live bait from liquid and recover the live bait.

[0018] The liquid processing module, microalgae cultivation module, and live bait separation and recovery module form a flow path.

[0019] The optimized enzyme liquid treatment unit includes an enzyme liquid storage tank, which is provided with an enzyme liquid filter screen, a pH treatment tank, an anaerobic treatment tank and a drain outlet connected to a mixing tank from top to bottom. The pH treatment tank, the anaerobic treatment tank and the drain outlet are connected by a one-way valve.

[0020] The optimized mixing chamber is equipped with a mixing motor, a temperature control structure, and stirring blades installed at the moving end of the mixing motor; the temperature control structure includes a heater and a controller.

[0021] The optimized tailwater treatment unit includes a tailwater filter box and a filter plate disposed inside the tailwater filter box. The tailwater filter box is also provided with a tailwater inlet pipe that discharges filtered tailwater into the mixing box.

[0022] The optimized microalgae cultivation module includes a vertical three-dimensional pipeline and an air pump. The vertical three-dimensional pipeline and the mixing tank are connected by a pipeline, and the pipeline is equipped with a nutrient processor. The vertical three-dimensional pipeline is equipped with a lighting lamp, and the air pump and the vertical three-dimensional pipeline are connected to multiple aeration pipes.

[0023] The optimized live bait separation and recovery module includes a dry-wet separation pipe and a live bait discharge hose connected sequentially to a vertical three-dimensional pipeline, wherein the live bait discharge hose is equipped with a solenoid valve.

[0024] Working principle and beneficial effects of the present invention:

[0025] In the enzyme liquid treatment unit, the brewing enzyme liquid is first filtered through the enzyme liquid filter screen in the enzyme liquid storage tank to remove impurities. Then it enters the pH treatment tank to adjust the acidity and alkalinity to a range suitable for microalgae growth. Then it flows into the anaerobic treatment tank for anaerobic treatment to optimize the nutritional activity of the enzyme liquid. The treated enzyme liquid is then transported from the drain to the mixing tank through a one-way valve.

[0026] In the wastewater treatment unit, the aquaculture wastewater enters the wastewater filtration box. After being filtered by the filter plate to remove large suspended particles, it is discharged into the mixing box through the wastewater inlet pipe. Inside the mixing box, the mixing motor drives the stirring blades to evenly mix the enzyme solution and the filtered wastewater. The temperature control structure controller controls the heater to adjust the temperature of the mixed solution according to the growth requirements of microalgae, so that the mixed solution forms a stable basic nutrient system.

[0027] The mixture is transported through pipelines to a nutrient processor for further nutrient adjustment, and then enters the vertical three-dimensional pipeline of the microalgae cultivation module. The vertical three-dimensional pipeline serves as a three-dimensional cultivation space, providing suitable light conditions for microalgae photosynthesis through lighting lamps, while air pumps deliver gas into the pipeline through multiple aeration pipes to regulate the dissolved oxygen level in the water, promoting the rapid reproduction of microalgae in a suitable environment, and providing a growth substrate for plankton, thus realizing the stratified cultivation of microalgae and plankton.

[0028] After cultivation, the mixture of microalgae and plankton enters the live bait separation and recovery module. The live bait is first separated from the liquid through the dry-wet separation tube, and then the live bait is transported through the live bait discharge hose. The discharge process is controlled by a solenoid valve. The separated liquid can be returned to the system to participate in the circulation, and finally the liquid treatment module, microalgae cultivation module and live bait separation and recovery module form a complete flow path.

[0029] The enzyme liquid treatment unit ensures the purity and activity of the brewing enzyme liquid through filtration, pH adjustment, and anaerobic treatment. The tailwater treatment unit removes impurities from the tailwater through filtration. Both are stirred and temperature-controlled in a mixing tank to form a nutrient substrate suitable for microalgae growth, reducing the input of external nutrients and lowering costs. The vertical three-dimensional pipeline of the microalgae cultivation module improves space utilization. Combined with lighting and aeration pipes, it precisely controls light and dissolved oxygen, greatly promoting the reproduction of microalgae and plankton, and improving biomass and stability. The live bait separation and recovery module achieves efficient recovery of live bait through dry and wet separation pipes and live bait hoses controlled by solenoid valves, reducing waste and allowing the liquid to be recycled. It not only realizes the synergistic conversion of nutrients such as nitrogen and phosphorus in aquaculture tailwater with brewing enzyme liquid, but also constructs a multi-trophic-level live bait chain, solving the problems of inefficient bait production, incomplete tailwater treatment, and resource waste in traditional technologies, and promoting the development of aquaculture towards a green and efficient direction.

[0030] Brewing enzyme solution and aquaculture wastewater are mixed for cultivation. From the perspective of ecological feed production, the nutrient matrix formed by the mixture can significantly promote the rapid reproduction of microalgae: the brewing enzyme solution is rich in organic nutrients, which can provide carbon sources and active substances needed for microalgae growth, while pollutants such as nitrogen and phosphorus in aquaculture wastewater serve as nitrogen and phosphorus sources for microalgae growth. The two work together to supplement the key nutrients for microalgae growth. Compared with single microalgae cultivation, the microalgae biomass is greatly increased, ensuring a continuous nutrient supply for the subsequent reproduction of plankton (rotifers, copepods, etc.), forming a stable multi-trophic-level live feed chain, and solving the problems of unstable biomass and single nutrition in single microalgae cultivation. At the same time, this mixed cultivation mode reduces dependence on external resources such as grains and fishmeal, and lowers the production cost of ecological feed.

[0031] From the perspective of aquaculture wastewater treatment and resource utilization, mixed cultivation achieves efficient conversion of pollutants and wastewater reuse: pollutants such as nitrogen and phosphorus in aquaculture wastewater are absorbed and utilized by microalgae, which promotes microalgae growth and significantly improves nitrogen and phosphorus removal rates, achieving deep purification of wastewater and avoiding the problems of low removal rates and secondary pollution from traditional physical sedimentation methods and chemical treatment. Moreover, the treated wastewater can be directly reused in the live feed aquaculture process because nutrients are effectively utilized, which saves water resources and reduces aquaculture water costs. Attached Figure Description

[0032] Figure 1 For flowcharts;

[0033] Figure 2 This is an overall diagram of a food chain-based ecological bait production equipment.

[0034] Figure 3 for Figure 2 A schematic diagram of a localized explosion;

[0035] Figure 4 This is a schematic diagram of the structure at point 21 of the rotating filter screen.

[0036] The reference numerals in the accompanying drawings include: 1. Enzyme liquid storage tank; 2. Enzyme liquid filter screen; 3. pH treatment tank; 4. Anaerobic treatment tank; 5. One-way valve; 6. Mixing tank; 7. Tailwater filter box; 8. Filter plate; 9. Tailwater inlet pipe; 10. Temperature control structure; 11. Mixing motor; 12. Nutrient processor; 13. Vertical three-dimensional pipeline; 14. Lighting lamp; 15. Air pump; 16. Clean water pipe; 17. Dry and wet separation pipe; 18. Solenoid valve; 19. Live bait release hose; 20. Silicone ring; 21. Rotating filter screen; 22. Rotating cover. Detailed Implementation

[0037] The following detailed description illustrates the specific implementation method:

[0038] In the following statements, directional terms such as "left," "right," "up," and "down" are based on the directions shown in the diagram. In practice, if the corresponding structures are changed in the same direction based on the direction while maintaining their relative positions, it will not affect the implementation of the plan.

[0039] Example: A food chain-based ecological bait production method, comprising:

[0040] S1. Mix the brewing enzyme liquid with the aquaculture wastewater in a certain proportion to form the nutrient substrate required for microalgae growth.

[0041] S2. The nutrient substrate is delivered to the microalgae culture module, and microalgae are cultured by regulating light and dissolved oxygen conditions; some microalgae are delivered to the plankton breeding unit to cultivate plankton and build a live bait chain.

[0042] After the S3 planktonic breeding unit reproduces, the remaining liquid is discharged into the aquaculture pond through dry-wet separation to achieve a closed-loop cycle.

[0043] Reference Figures 1-3 An ecological bait production device based on the food chain, comprising:

[0044] The liquid treatment module is used to treat brewing enzyme liquid and aquaculture wastewater to form a nutrient substrate. The liquid treatment module includes an enzyme liquid treatment unit, a mixing tank 6 and a wastewater treatment unit.

[0045] The microalgae culture module is used to cultivate microalgae and plankton. The microalgae culture module contains a three-dimensional culture space and environmental control components for regulating light and dissolved oxygen.

[0046] The live bait separation and recovery module is used to separate live bait from liquid and recover the live bait.

[0047] The liquid processing module, microalgae cultivation module, and live bait separation and recovery module form a flow path.

[0048] The enzyme liquid treatment unit includes an enzyme liquid storage tank 1. From top to bottom, the enzyme liquid storage tank 1 is provided with an enzyme liquid filter screen 2, a pH treatment tank 3, an anaerobic treatment tank 4, and a drain outlet connected to a mixing tank 6. The pH treatment tank 3, the anaerobic treatment tank 4, and the drain outlet are connected by a one-way valve 5.

[0049] The mixing chamber 6 is fixedly equipped with a mixing motor 11, a temperature control structure 10, and stirring blades installed at the movable end of the mixing motor 11; the temperature control structure 10 includes a heater and a controller, and the controller controls the temperature of the heater.

[0050] The wastewater treatment unit includes a wastewater filter box 7 and a filter plate 8 installed inside the wastewater filter box 7. The wastewater filter box 7 is also provided with a wastewater inlet pipe 9 that discharges filtered wastewater into the mixing box 6.

[0051] The microalgae cultivation module includes a vertical three-dimensional pipe 13 and an air pump 15. The vertical three-dimensional pipe 13 and the mixing box 6 are connected by a pipe, and a nutrient processor 12 is installed in the pipe. The vertical three-dimensional pipe 13 is equipped with a lighting lamp 14, a clean water pipe 16, an air pump 15, and multiple aeration pipes connected to the vertical three-dimensional pipe 13.

[0052] The live bait separation and recovery module includes a dry-wet separation pipe 17 and a live bait discharge hose 19 connected sequentially to the vertical three-dimensional pipe 13. The live bait discharge hose 19 is equipped with a solenoid valve 18.

[0053] In the enzyme liquid treatment unit, the brewing enzyme liquid is first filtered through the enzyme liquid filter screen 2 in the enzyme liquid storage tank 1 to remove impurities. Then it enters the pH treatment tank 3 to adjust the pH to a range suitable for microalgae growth. Then it flows into the anaerobic treatment tank 4 for anaerobic treatment to optimize the nutritional activity of the enzyme liquid. The treated enzyme liquid is then transported from the drain outlet to the mixing tank 6 through the one-way valve 5.

[0054] In the wastewater treatment unit, the aquaculture wastewater enters the wastewater filter box 7, and after being filtered by the filter plate 8 to remove large suspended particles, it is discharged into the mixing box 6 through the wastewater inlet pipe 9. Inside the mixing box 6, the mixing motor 11 drives the stirring blades to mix the enzyme liquid and the filtered wastewater evenly. The controller of the temperature control structure 10 controls the heater to adjust the temperature of the mixed liquid according to the growth requirements of microalgae, so that the mixed liquid forms a stable basic nutrient system.

[0055] The mixture enters the vertical three-dimensional pipe 13 of the microalgae cultivation module through the pipe. The vertical three-dimensional pipe 13 serves as a three-dimensional cultivation space. The lighting lamp 14 provides light conditions suitable for microalgae photosynthesis, while the air pump 15 delivers gas into the pipe through multiple aeration pipes to regulate the dissolved oxygen level in the water, promote the rapid reproduction of microalgae in a suitable environment, and provide a growth substrate for plankton, thus realizing the stratified cultivation of microalgae and plankton.

[0056] After cultivation, the mixture of microalgae and plankton enters the live bait separation and recovery module. The live bait is first separated from the liquid through the dry-wet separation pipe 17, and then the live bait is transported through the live bait discharge hose 19. The solenoid valve 18 controls the discharge process. The separated liquid can be returned to the aquaculture pond to participate in the circulation, and finally the liquid treatment module, microalgae cultivation module and live bait separation and recovery module form a complete circulation path.

[0057] More specifically, the rotating filter 21 is used in conjunction with the rotating cover 22 to adjust the rotating filter 21, while the silicone ring 20 is installed on the rotating filter 21 to improve the sealing performance.

[0058] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as screws, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

Claims

1. A method for producing ecological bait based on a food chain, characterized in that, include: S1. Mix the brewing enzyme liquid with the aquaculture wastewater in a certain proportion to form the nutrient substrate required for microalgae growth. S2. The nutrient substrate is delivered to the microalgae culture module, and microalgae are cultured by regulating light and dissolved oxygen conditions; some microalgae are delivered to the plankton breeding unit to cultivate plankton and build a live bait chain. After the S3 planktonic breeding unit reproduces, the remaining liquid is discharged into the aquaculture pond through dry-wet separation to achieve a closed-loop cycle.

2. The method for producing ecological bait based on a food chain according to claim 1, characterized in that: The mixing ratio of the brewing enzyme liquid to the aquaculture wastewater is 1:300-500.

3. The method for producing ecological bait based on a food chain according to claim 2, characterized in that: After mixing brewing enzyme liquid with aquaculture wastewater, the temperature and nutrients are adjusted to meet the growth needs of microalgae.

4. The method for producing ecological bait based on a food chain according to claim 3, characterized in that: The microalgae cultivation module promotes the growth and reproduction of microalgae and plankton by regulating light intensity, cycle, and dissolved oxygen concentration in the water.

5. A food chain-based ecological bait production device, characterized in that, include: A liquid treatment module is used to treat brewing enzyme liquid and aquaculture wastewater to form a nutrient substrate. The liquid treatment module includes an enzyme liquid treatment unit, a mixing tank, and a wastewater treatment unit. A microalgae culture module is used to cultivate microalgae and plankton. The microalgae culture module includes a culture space with a three-dimensional structure and an environmental control component for controlling light and dissolved oxygen. The live bait separation and recovery module is used to separate live bait from liquid and recover the live bait. The liquid processing module, microalgae cultivation module, and live bait separation and recovery module form a flow path.

6. The food chain-based ecological bait production equipment according to claim 5, characterized in that, The enzyme liquid treatment unit includes an enzyme liquid storage tank. From top to bottom, the enzyme liquid storage tank is provided with an enzyme liquid filter, a pH treatment tank, an anaerobic treatment tank, and a drain outlet connected to a mixing tank. The pH treatment tank, the anaerobic treatment tank, and the drain outlet are connected by a one-way valve.

7. The food chain-based ecological bait production equipment according to claim 6, characterized in that, The mixing chamber is equipped with a mixing motor, a temperature control structure, and stirring blades installed at the moving end of the mixing motor; the temperature control structure includes a heater and a controller.

8. The food chain-based ecological bait production equipment according to claim 7, characterized in that: The wastewater treatment unit includes a wastewater filter box and a filter plate installed inside the wastewater filter box. The wastewater filter box is also provided with a wastewater inlet pipe that discharges filtered wastewater into the mixing box.

9. The food chain-based ecological bait production equipment according to claim 6, characterized in that: The microalgae cultivation module includes a vertical three-dimensional pipeline and an air pump. The vertical three-dimensional pipeline and the mixing tank are connected by a pipeline, and the pipeline is equipped with a nutrient processor. The nutrient processor is a monitoring device containing pH, ammonia nitrogen, TN, and TP probes. The vertical three-dimensional pipeline is equipped with a lighting lamp, and the air pump and the vertical three-dimensional pipeline are connected to multiple aeration pipes.

10. The food chain-based ecological bait production equipment according to claim 9, characterized in that: The live bait separation and recovery module includes a dry-wet separation pipe and a live bait discharge hose connected sequentially to a vertical three-dimensional pipeline. The live bait discharge hose is equipped with a solenoid valve.

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