Aquaculture system with lighting device

Abstract

The invention relates to an aquaculture system with a lighting device. The aquaculture system comprises a first aquaculture unit, a second aquaculture unit and a third aquaculture unit. The first breeding unit is used for breeding first organisms. The second breeding unit is configured to be of a combined structure and used for breeding a second organism and filtering granular excrement of the first organism. The lighting unit comprises a plurality of independently controllable light-emitting assemblies so that the lighting unit can generate time-related illumination with different wavelength bands at a plurality of depth positions in the first breeding unit, the second breeding unit and the third breeding unit. The light wavelength range of the plurality of light-emitting components is selected according to a first organism in the first breeding unit, a second organism in the second breeding unit and / or a third organism in the third breeding unit to be influenced, and the light period of the plurality of light-emitting components corresponds to the illumination time period of the first organism, the second organism and / or the third organism.

Description

Technical Field

[0001] The invention relates to the technical field of aquaculture lighting, and in particular to an aquaculture system containing a lighting device. Background Art

[0002] During the billions of years of evolution, aquatic animals have formed a unique visual physiological structure based on environmental characteristics. For example, fish receive light signals through the photoreceptors of the retina and pineal gland to synchronously perceive and adapt to the light environment of the natural habitat. Therefore, the light environment characteristics of aquatic animals in nature are the primary reference factors for optimizing and regulating light environment factors under artificial breeding conditions. When the algae density in the pond is too high and the light intensity at noon is high, the photosynthesis of the algae makes the dissolved oxygen content in the pond very high, but when the light intensity is weak, the respiration of the organisms in the pond will consume a lot of dissolved oxygen, causing the dissolved oxygen in the pond to drop sharply. When the pond is no longer suitable for algae growth, a large number of algae will die at the same time, resulting in a large amount of organic corrosive substances at the bottom of the pond. The decomposition of this organic matter requires a large amount of dissolved oxygen and produces toxic gases. The toxic substances produced by the death of algae can cause fish death. Therefore, light can indirectly affect the dissolved oxygen level of the pond through aquatic plants. However, Boeuf G mentioned in "Does light have an influence on fish growth" that although light will be strongly attenuated in water due to the complex absorption process of plants and animals and the scattering process of different media during the transmission of light in water, except for species living in caves and deep seas, most aquatic organisms have complex visual physiological structures, and very few species can survive without light. Therefore, it is not advisable to keep the breeding workshop dark all day or to have high-intensity lighting all day.

[0003] Fish and shrimp are extremely sensitive to light, and their eyes, as their main organ of light perception, show characteristics that change with different growth stages. Newly hatched fish and shrimp usually have transparent eyes. However, as they grow, the retina will gradually develop and improve, and the time required for this process varies from species to species. In aquaculture, the ideal transparency of the pond should be controlled between 20 and 40 cm, because if the water is too clear, light can easily penetrate to the bottom of the pond, promoting the growth of harmful microorganisms and possibly producing toxic gases. The intensity of light has a significant impact on the body color of fish and shrimp fry during their growth, and insufficient light may cause abnormal growth. In some fish, their visual organs may decline over time, while other senses are enhanced. Studies have shown that for young European sea bass (Dicentrarchus labrax), the stronger the light, the higher the survival rate.

[0004] Jia Husen et al. mentioned in "Research Progress on Photoinhibition of Photosynthesis in Higher Plants" that light affects the absorption of nitrogen by the bacteria-algae system by directly affecting the photosynthesis of algae. Algae are an important part of the bacteria-algae system, and algae are photosynthetic autotrophic organisms that can convert the absorbed light energy into chemical energy for their own growth. Under normal circumstances, as the light intensity increases, the photosynthesis of algae increases. Markou G et al. pointed out in "Microalgal and cyanobacterial cultivation: The supply of nutrients" that once the light saturation point is exceeded, a photoinhibition effect will occur on algae. Strong light can produce photooxidative stress, destroy proteins and pigments in the algae photosynthetic system, inhibit the growth of algae, and even cause algae death. Nitrogen is an essential element for algae growth. Light can directly affect the absorption of nitrogen by algae by affecting the photosynthesis of algae. Algae produce oxygen through photosynthesis for the respiratory metabolism of bacteria. Therefore, light has an indirect effect on the absorption of nitrogen by bacteria. Xu et al. studied the influence of photoperiod and light intensity on the growth and photosynthesis of Dunaliella salina (chlorophyta) CCAP 19 / 30. -2 ·s -1 Within this range, as light intensity increases, chlorophyll and carotenoid content decreases, cells are increasingly stressed by light, and photosynthesis is inhibited. Liang Junyu et al. found in their study "Study on SBR Treatment of Simulated Domestic Wastewater Based on Algae-Bacteria Symbiosis System" that compared with strong light (183.5 μmol·m -2 ·s -1 ), the bacterial-algal symbiotic system was under low light intensity (92.27 μmol·m -2 ·s -1 ) conditions, it has significant advantages in removing ammonia nitrogen and total nitrogen in sewage.

[0005] Large amounts of nitrogen salt input can easily cause eutrophication of shrimp farming water in aquaculture, which is one of the main reasons hindering the healthy and sustainable development of shrimp farming. Therefore, how to effectively deal with excess nitrogen salts in aquaculture water to maintain a healthy water quality environment has become a major issue that the shrimp farming industry needs to overcome. Microalgae and bacteria are important components of the shrimp farming ecosystem, and play an important role in maintaining the dynamic balance of the aquaculture ecosystem, accelerating material circulation, and purifying aquaculture water quality. On the one hand, as the main body of energy and material conversion, bacteria and microalgae can effectively absorb and utilize excess dissolved nitrogen in shrimp farming ponds, reduce the degree of eutrophication of water bodies, and play an important role in maintaining a healthy water quality environment; on the other hand, the carbon dioxide produced by bacterial degradation of organic matter can provide a carbon source for algae, and the oxygen released by algae photosynthesis can promote bacterial respiratory metabolism. The two complement each other.

[0006] The reflectance spectrum of water bodies is closely related to the nature and content of suspended matter. Using a spectroradiometer, it was found through measurements that the degree of turbidity caused by suspended sediment is one of the main factors affecting the reflectivity of water bodies. In the orange and red bands of visible light, the reflectivity of turbid water is about 5% higher than that of clear water. The reflectivity of clear water drops to zero at 0.75μm, while turbid water containing sediment has a higher reflectivity at 0.8μm in the near-infrared band. The reflectivity of turbid water drops to zero at 0.95μm. The reflectivity results measured by Landsat also show that there is a linear relationship between the reflectivity in the 0.6-0.7μm band and the turbidity of the water body.

[0007] The chlorophyll concentration in water has a significant effect on the spectral characteristics of water. As the chlorophyll concentration in water increases, the reflectivity of the blue light band decreases significantly, while the reflectivity of the green light band increases significantly. The concentration of chlorophyll is an important indicator for measuring the primary productivity and hypertrophication of water bodies. Therefore, remote sensing methods can be used to monitor the presence and concentration of algae. In addition to suspended inorganic matter and chlorophyll, impurities in natural water bodies can also cause changes in the spectral characteristics of water bodies. For example, oil spill pollution on water increases the reflectivity of ultraviolet and blue light bands. The content of acids or inorganic salts in water bodies has little effect on the reflectivity of water, and no difference can be seen. In summary, water bodies have different spectral characteristic changes due to different turbidity, chlorophyll or water surface properties.

[0008] In the context of industry development, with the gradual upgrading and improvement of emerging technologies such as artificial plant factories, artificial breeding environments, and intelligent breeding, the aquaculture industry is also in urgent need of intelligent and mechanized upgrades. Based on the breeding objects targeted by aquaculture, they actually also have lighting requirements, such as aquatic plants, fish and other species. The existing aquaculture technology is usually relatively simple, that is, a breeding system or method is designed for a type of aquatic products, but it is rare to see aquaculture systems based on the joint breeding of multiple species at various levels in the water environment, especially based on the mutual utilization of growth-required substances (such as nutrients, oxygen, temperature, pressure environment, etc.) and growth-generated substances (such as excrement, dissolved oxygen produced by photosynthesis, etc.), material transfer and other schemes. The design of solutions is relatively rare, which leads to the problem of single breeding objects and the inability to achieve better material and energy transfer utilization.

[0009] Prior art CN113516635A proposes a fish-vegetable symbiotic system and a method for estimating the nitrogen demand of vegetables based on fish behavior. The fish-vegetable symbiotic system includes: a vegetable planting pond, a fish pond, a water pump, a camera, a filter and a computer. The estimation method includes the following steps: Step 1: Establishing a fish-vegetable symbiotic system; Step 2: Analyzing and counting fish behavior data; Step 3: Establishing a model relationship between fish activity and nitrogen concentration; Step 4: Inputting the test set into the trained optimal model to obtain a predicted value of the nitrogen content in the water. This device uses a combination of machine vision and mathematical model analysis to comprehensively calculate fish behavior data, which can reflect the activity of fish under different nitrogen concentration conditions and link fish behavior with plant nutrition. However, light is a key factor affecting plant nutrient absorption, and the fish pond needs light source irradiation. The algae inside the fish pond can also affect the activity of the fish. When the device calculates the demand for nitrogen based on this, it ignores the impact of the bacteria-algae symbiotic system in the water on the fish, and cannot be applied to aquaculture of traditional farmers.

[0010] In addition, on the one hand, there are differences in understanding among those skilled in the art; on the other hand, the inventor studied a large number of documents and patents when making the present invention, but due to space limitations, not all details and contents are listed in detail. However, this does not mean that the present invention does not have the characteristics of these prior arts. On the contrary, the present invention already has all the characteristics of the prior art, and the applicant reserves the right to add relevant prior art to the background technology. Summary of the invention

[0011] The prior art has already produced technical solutions for integrated cultivation of different organisms. For example, CN106719244A discloses an integrated device for automatic cultivation of plants, algae, zooplankton and fish, which uses a microfiltration membrane to separate zooplankton, plants, algae and fish for integrated cultivation, which can not only avoid the food chain imbalance problem existing in mixed cultivation, but also facilitate access, and at the same time, oxygen and carbon dioxide can be mutually communicated to meet the living conditions required by the internal plants and animals; using a magnetizer to convert large molecular water into small molecular water can accelerate the penetration of water molecules into the microfiltration membrane, and the high dissolved oxygen content in the magnetized water improves the survival rate and quality of plants and animals; collecting the excrement of zooplankton and fish for fermentation treatment and then using it as fertilizer for plants and algae to form a cycle, and separate fermentation avoids polluting the water body and is also conducive to the absorption and utilization of plants and algae. However, the technical solution sets a lighting lamp at a fixed position to provide a specific duration of light for the plant algae every day, and does not involve technical content for adjusting parameters such as the position, intensity and period of the light according to the growth differences between different organisms. In addition, since the specific proportion of the nutrient solution has been clearly defined in the technical solution, in order to avoid waste of the nutrient solution, the lighting parameters in the technical solution are also predetermined, and thus it is impossible to adjust the relevant lighting parameters according to the real-time growth status of different organisms.

[0012] In view of the shortcomings of the prior art, the present application proposes an aquaculture system containing a lighting device, including a first breeding unit, a second breeding unit and a third breeding unit. The first breeding unit is used to breed a first organism. The first breeding unit is connected to a plurality of second breeding units through a first connecting channel. The second breeding unit is configured as a combined structure and is used to breed a second organism and filter the granular excrement of the first organism. The second breeding unit for breeding the second organism is connected to the third breeding unit for breeding a third organism through the first connecting channel. The lighting device includes a control unit for controlling the light parameters of the lighting unit. The lighting units are respectively arranged in the first breeding unit for breeding the first organism, the second breeding unit for breeding the second organism, and the third breeding unit. The lighting unit includes a plurality of independently controllable light emitting components so that the lighting unit generates time-related illumination with different wavelength bands at a plurality of depth positions in the first breeding unit, the second breeding unit and the third breeding unit. The light wavelength ranges of the plurality of light emitting components are selected according to the first organism in the first breeding unit, the second organism in the second breeding unit and / or the third organism in the third breeding unit to be affected, and the light cycles of the plurality of light emitting components correspond to the illumination time periods of the first organism, the second organism and / or the third organism.

[0013] According to a preferred embodiment, the aquaculture water flows through the first aquaculture unit, the second aquaculture unit and the third aquaculture unit in sequence, and the aquaculture water flowing out of the third aquaculture unit returns to the first aquaculture unit.

[0014] Different from the prior art, the present invention can adjust the illumination parameters of the lighting unit according to the biological growth state in different breeding units, so as to generate time-related illumination with different wavelength bands at different depths in different breeding units. Based on the above-mentioned distinguishing technical features, the problems to be solved by the present invention may include: how to control the reproduction and growth rate of algae by controlling the illumination time, intensity and / or depth of the lighting unit in the water, and then control the amount of algae available to animals at different depths and positions, so as to promote the growth of animals. Specifically, on the one hand, the present scheme configures different breeding areas, places aquatic products at different positions in the water body in different breeding units for breeding, and the water body is configured to be movable in at least two breeding units, so as to drive at least part of the living needs or living excrement of the aquatic products in the different breeding unit environments to move between the breeding units, thereby realizing the utilization of materials in the aquaculture environment, which is very conducive to building an internally balanced ecological environment, significantly reducing breeding costs, and improving breeding efficiency. On the other hand, the present invention can adjust the setting parameters of the lighting unit according to the differences in the biological growth states in different breeding units, so that the growth of different organisms can promote each other, so as to maximize the breeding efficiency.

[0015] According to a preferred embodiment, the lighting unit includes a light-transmitting container and a light-emitting component arranged in the light-transmitting container, the light-transmitting container is configured to separate the liquid from the light-emitting component, wherein the space between the light-transmitting container and the light-emitting component is filled with filling liquid, and the lighting unit data is connected to the control unit.

[0016] According to a preferred embodiment, the first breeding unit for breeding the first organism and / or the second breeding unit for breeding the second organism is provided with a cultivation substrate, preferably, the cultivation substrate is a sand layer and / or a sand layer.

[0017] According to a preferred embodiment, the second breeding unit for breeding the second organism includes a water supply and drainage unit capable of changing the water level by water supply and drainage, thereby simulating low tide and high tide in the second breeding unit.

[0018] According to a preferred embodiment, the second breeding unit for breeding the second organism is connected to the first breeding unit in the first separation unit for breeding water.

[0019] According to a preferred embodiment, the second breeding unit where the second organism is cultured is connected to the first breeding unit via a feeding unit for feeding the first organism. The third breeding unit is integrated into the feeding unit.

[0020] According to a preferred embodiment, the second breeding unit for breeding the second organism is connected to the second separation unit for separating the dissolved excrement of the first organism through the first connection channel for breeding water.

[0021] According to a preferred embodiment, the second separation unit is integrated into the first separation unit for aquaculture water.

[0022] According to a preferred embodiment, the second separation unit comprises at least one fourth breeding unit, wherein the fourth breeding unit is filled with breeding water and is breeding a fourth organism.

[0023] According to a preferred embodiment, the fourth breeding unit for breeding the fourth organism has a water supply and drainage unit, and the water supply and drainage unit is used to change the water level in the fourth breeding unit.

[0024] According to a preferred embodiment, the light-emitting component at least partially occupies the internal volume of the light-transmitting container, so that there is space around the light-emitting component in the light-transmitting container. When there is gas or a portion of liquid is filled in the internal space of the light-transmitting container, the density of the lighting unit can be controlled to be less than or equal to the density of the water body in the aquaculture environment in which it is located, so that the lighting unit can work in a manner of floating on the water surface or in the water body.

[0025] According to a preferred embodiment, the light-emitting component is configured to emit full-spectrum light or simulated sunlight. There is a filling liquid in the inner space of the light-transmitting container, which is configured to filter the light emitted by the light-emitting component into a spectrum for regulating the growth of aquatic plants, and the filling liquid is configured to gather in the upper layer of the water body. The filling liquid can conduct the heat generated in the light-emitting component to the lighting unit, and then to the algae culture body.

[0026] According to a preferred embodiment, the control unit is further configured to: control the size and position of the light-emitting component and / or adjust the amount and position of the filling liquid added, so that at least part of the light emitted by the light-emitting component is transmitted through the filling liquid of the light-transmitting container to enter the water body. The arrangement of the present invention can provide a certain amount of full-spectrum light that imitates sunlight required for fish growth, and thereby regulate its biological clock, and further appropriately adjust the living habits of some fish, thereby achieving better breeding results in certain aspects.

[0027] According to a preferred embodiment, the control unit is further configured such that light transmitted through the filling liquid can irradiate the first organism, the second organism and / or the third organism in the corresponding water depth layer in a manner different from at least one light parameter of the light not transmitted through the filling liquid, and the first organism, the second organism and / or the third organism is at least different from another organism in another layer that receives light not transmitted through the filling liquid.

[0028] Unlike the prior art, the control unit of the present invention can change the lighting parameters for irradiating organisms in different depth layers of the water body through the light-emitting components in the lighting unit. Based on the above-mentioned distinguishing technical features, the problems to be solved by the present invention may include: how to adjust the size and position of the filling liquid and / or the light-emitting component so that the light-emitting component can simultaneously produce differentiated lighting for aquatic products at different levels, thereby improving the breeding efficiency of aquatic products at different levels. For example, the filling liquid is deposited at the bottom position of the light-transmitting container of the light-emitting component under the action of basic gravity, and the light transmitted by it can only and mainly illuminate the bottom layer of the water body, and the aquatic products at the bottom layer can be, for example, water plants. Due to the influence of gravity, the light emitted by the part of the light-emitting component that is not blocked by the filling liquid can only and mainly illuminate the middle or top layer of the water body, and the aquatic products in the middle or top layer can be, for example, fish. In the configuration mode exemplified above, fish live in the middle and upper layers of the water body, while aquatic plants grow in the bottom sand layer. Therefore, by reasonably configuring the size and position of the filling liquid and / or the light-emitting component, the light-emitting component can simultaneously produce differentiated lighting for aquatic products at different levels. Moreover, based on the structural configuration of the lighting unit that utilizes buoyancy to maintain its position in the water body, the present invention can automatically adjust the height based on the depth change of the water body, so that at any water surface height, the light emitted by the lighting unit always moves with the height changes of each layer of the water body.

[0029] According to a preferred embodiment, the lighting unit can cause the position of itself and / or the filling liquid therein and / or the light-emitting component therein to change in the longitudinal direction based on the tidal effect, so that the filling liquid in the lighting unit and the light-emitting component move relative to each other, thereby generating illumination of adapted light quality for several layers in the water body at least in several nodes of the tidal effect. For example, in the case where fish and aquatic plants and aquatic products exist in the water body at the same time, by configuring the relative position relationship between the filling liquid and the light-emitting component in the lighting unit, at the high tide node, the light-emitting component and the filling liquid have a first position relationship, and at the low tide node, based on the change of the water level, the light-emitting component and the filling liquid have a second position relationship, so that the light transmitted through the filling liquid and the light not transmitted through the filling liquid can change in different nodes, and then the aquatic plants and fish receive different illumination in different nodes.

[0030] The above scheme can automatically change and provide corresponding lighting according to the different growth needs of aquatic products in different water levels at different times based on the effect of tides, and the driving process does not require the use of additional driving structures, stage detection equipment or complex overall structures. Automatic and changing lighting control can be achieved by relying solely on the changes in water state brought about by simple tidal effects.

[0031] According to a preferred embodiment, the lighting unit at least utilizes buoyancy to maintain its position in the water body, and it is able to adjust the height of the lighting unit based on the depth change of the water body, so that the light emitted by the lighting unit at any water surface height moves based on the height change of each layer of the water body. Under the action of tides, the light-emitting components in the lighting unit can move up and down in the space inside the tube as the water level of the external water body rises and falls. In contrast, the filling liquid in the interlayer of the tube wall is fixed in relative position because it is not in contact with the outside world, thereby forming a tidal effect that allows the light-emitting components to move relative to the filling liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a simplified overall structural diagram of the system of the present invention;

[0033] Figure 2 It is an enlarged view of the lighting unit of the present invention.

[0034] Reference numerals list

[0035] 100: first breeding unit; 110: first organism; 120: breeding water; 200: first connecting channel; 300: second breeding unit; 310: second organism; 400: third breeding unit; 500: cultivation matrix; 600: water supply and drainage unit; 700: first separation unit; 800: feeding unit; 900: second separation unit; 1000: fourth breeding unit; 1100: fourth organism; 1200: lighting unit. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1 and 2 The present invention is described in detail.

[0037] The present invention provides an aquaculture system including a lighting device, the system comprising: a first culture unit 100 for culture a first organism 110. The first culture unit 100 is connected to a plurality of combined second culture units 300 through a first connecting channel 200. The combined second culture units 300 are used to culture a second organism 310 and are configured to filter granular excrement of the first organism 110, wherein the second culture unit 300 for culture the second organism 310 is connected to a third culture unit 400 through a first connecting channel 200. The first connecting channel 200 is used to introduce culture water 120. A control unit is used to control the illumination intensity and wavelength range of the illumination unit 1200, wherein the illumination unit 1200 is respectively arranged in the first breeding unit 100 for breeding the first organism 110, the second breeding unit 300 for breeding the second organism 310, and the third breeding unit 400, and the illumination unit 1200 includes a light-transmitting container and a light-emitting component arranged in the light-transmitting container, and the light-transmitting container is configured to separate the liquid from the light-emitting component, wherein the light-transmitting container and the light-emitting component are filled with a filling liquid. The illumination unit 1200 is data-connected to the control unit. Preferably, the third breeding unit 400 can be used for breeding algae. Preferably, the breeding water 120 can be salt water or fresh water. Preferably, the first organism 110 can be a fish, a mollusk or a crustacean. Preferably, the second organism 310 can be one of a marine worm, a polychaete ringworm, a sandworm or a Watt's worm. The first breeding unit 100 for breeding the first organism 110 and / or the second breeding unit 300 for breeding the second organism 310 is provided with a cultivation substrate 500. Preferably, the cultivation substrate 500 is a sand layer and / or a sand layer.

[0038] The second breeding unit 300 for breeding the second organism 310 includes a water supply and drainage unit 600 capable of changing the water level by water supply and drainage, thereby simulating low tide and high tide in the second breeding unit 300. The second breeding unit 300 for breeding the second organism 310 is connected to the first breeding unit 100 in the first separation unit 700 of the breeding water 120. The second breeding unit 300 and the first breeding unit 100 in which the second organism 310 is cultured are connected through a feeding unit 800 for feeding the first organism 110. The third breeding unit 400 is integrated into the feeding unit 800. The second breeding unit 300 for breeding the second organism 310 is connected to the second separation unit 900 for separating the dissolved excrement of the first organism 110 through the first connection channel 200 of the breeding water 120. The second separation unit 900 is integrated into the first separation unit 700 of the breeding water 120. The second separation unit 900 includes at least one fourth breeding unit 1000 , wherein the fourth breeding unit 1000 is filled with breeding water 120 and breeds fourth organisms 1100 .

[0039] The fourth organism 1100 is placed in a cultivation unit or a hydroponic unit. Preferably, the fourth organism 1100 can be a saltwater-tolerant plant or a freshwater-adapted plant. Preferably, the fourth breeding unit 1000 with the fourth organism 1100 is provided with a modular assembly. Preferably, there are several second breeding units 300 for breeding the second organism 310 and / or the fourth breeding units 1000 with the fourth organism 1100. At least one fourth breeding unit 1000 for breeding the fourth organism 1100 has a water supply and drainage unit 600, which is used to change the water level in the fourth breeding unit 1000.

[0040] The aquaculture water 120 flows based on gravity and passes through the second aquaculture unit 300 for aquaculture of the second organism 310 and / or the fourth aquaculture unit 1000 for aquaculture of the fourth organism 1100. The first aquaculture unit 100, the second aquaculture unit 300 for aquaculture of the second organism 310, and the fourth aquaculture unit 1000 for aquaculture of the fourth organism 1100 are integrated into the pipeline unit of the aquaculture water 120. The third aquaculture unit 400 is integrated into the pipeline unit of the aquaculture water 120. Preferably, the first connecting channel 200 has an oxygenator. The first connecting channel 200 has a pump unit and a water inlet and a water outlet. Preferably, the pipeline unit has a pump unit and a water inlet and a water outlet.

[0041] The first breeding unit 100 is connected to the pump unit on the inlet side through the first connecting channel 200 on the outflow side, wherein the pump unit is connected to the water inlet of the first breeding unit 100 on the outlet side through the reflux unit, and is connected to the combined second breeding unit 300 on the inflow side through the first connecting channel 200.

[0042] The combined second breeding unit 300 is connected to the pump unit at the outflow side, and the breeding water 120 from the pump unit flows back to the pump unit through the reflux unit bypassing the combined second breeding unit 300. Further, the breeding water 120 is supplied from the pump unit to the second separation unit 900, and the breeding water 120 flows back to the pump unit from the second separation unit 900 through the reflux unit.

[0043] The first breeding unit 100 and / or the second breeding unit 300 for breeding the second organism 310 and / or the fourth breeding unit 1000 with the fourth organism 1100 have a water outlet, and the fluid outflow part has an outflow pipe and a siphon extending into the first breeding unit 100 and / or the second breeding unit 300 for breeding the second organism 310 and / or the fourth breeding unit 1000 with the fourth organism 1100.

[0044] The third farming unit 400 is used to provide nutrients and light for photosynthesis for algae. The third farming unit 400 is configured to have a lighting unit 1200 filled with water and ventilated, and the lighting unit 1200 has a light-emitting component. The third farming unit 400 has a vent and an outlet.

[0045] The third breeding unit 400 includes a controllable light-emitting component. The lighting unit 1200 has a light-transmitting container having a controllable light-emitting component arranged therein. The light-transmitting container is configured as a glass tube, for example. The light-emitting component may have one or more LED components, in particular LED circuit boards, which are arranged along the light-transmitting container and irradiate the algae. The lighting unit 1200 may have a filling liquid at the free end of the lower part of the light-transmitting container. The filling liquid can conduct the heat generated in the light-emitting component to the lighting unit 1200, and then to the algae culture body. For this purpose, the cooling body is connected to the light-emitting component and is flushed by the algae culture body on the outside.

[0046] The lighting unit 1200 is connected to the container cover at the upper end of the light-transmitting container and extends from the container cover. A control unit can be connected to the outside of the lighting unit 1200. In this way, energy input to the light-emitting component can also be achieved. In addition, an overpressure valve can be arranged on the outside of the lighting unit 1200, which is connected to the inner space of the tube. The light-transmitting container is sealed with respect to the filling liquid and the cover.

[0047] The lighting unit 1200 may also be provided with a sensor device, such as a temperature sensor, at an appropriate position for detecting and monitoring algae growth and / or environmental conditions. The algae culture may be temperature-regulated in the third breeding unit 400 by a control unit. Here, on the one hand, the waste heat of the light-emitting assembly may be used, and on the other hand, possible auxiliary heating or cooling equipment may be used. The lighting unit 1200 has different, independently controllable light-emitting assemblies, so that the lighting unit 1200 may generate light with different wavelength bands at different positions thereof, for example, lamps located at different depths may generate different bands, lamps located at different positions may generate different bands, and different bands may be generated according to the time of day, the time of year, or the ambient natural light reaching a specific depth of the pond. The colors of these lamps in the light-transmitting container are selected according to the species of fish or shellfish to be affected. The different colors of the lamps may affect the growth of different algae or aquatic animals. Plants such as algae also require a dark period, and individual plants each have an optimal light and dark duration or time period. The present application uses a light duration control of a control unit, and this time period can be predetermined and the individual light emitting components can be controlled to adjust the light cycle of the light emitting components accordingly. Therefore, the present application is based on the predetermined existing algae types (third organisms) and their reactions to different light parameters, and the light parameters of the light emitting components are adjusted to create an environment that meets the light parameters required by the algae type to maximize algae production. In addition to applications in the aquaculture industry, this light adjustment method can be used in other applications to promote algae growth and / or nitrogen / CO2 removal or consumption.

[0048] Preferably, the application also proposes a kind of assembly and method for improving the growth of animals taking algae as food.Because, algae need light / nitrogen to grow, therefore, in order to improve aquatic animal growth, the application controls the reproduction and growth of algae by lighting time, intensity and / or depth in water, and then controls the amount of algae available to aquatic animals at different depths and positions, to promote aquatic animal growth.Due to the features such as filling light-transmitting containers or capsules with a type of filling liquid, for example, mineral oil is filled, a plurality of light-emitting assemblies can be placed in a heavy glass tube or other light-transmitting containers and work effectively.Specifically, the medium oil transfers the heat from these LED devices and drivers (or other circuits) to the glass and then transfers to the water body.The combination of glass and oil allows these light sources to be cooled in the surrounding water, so that these light sources can be operated with higher light output (or with higher power level) than if they are other types of lamps or if the tube is filled with air and prevents circuit overheating.

[0049] Preferably, the lighting assembly for aquaculture is also modified to perform additional supplementary lighting in addition to natural light in an environment where there is a tidal influence. For example, a typical use environment is an aquaculture area near the sea or lake. Such an area near the water usually has some designated aquaculture areas, such as seaweed, water grass, crayfish, snails or crabs, etc. The waterside of a water body with a large overall mass is usually affected by a more obvious tidal effect, so that it has a more obvious tidal phenomenon in a relatively clear time period. Basically, the water depth near the shore will show periodic fluctuations in different time periods. Generally, the water depth is higher at high tide and lower at low tide. In another embodiment, although the breeding site is not selected at the seaside or a large lake area, in order to imitate the natural environment of the above area to ensure that the relevant aquatic products can enjoy a more primitive growth environment, the breeder may still choose to use artificial simulation to apply tidal effects in the aquaculture area, such as using a timed water absorption and water supply device to simulate high tide and low tide.

[0050] The inventor of the present application has found that in aquaculture, the water body is usually complicated from the surface to the bottom of the water. There are one or more species of organisms in each layer of the water body, and each species of organism, whether it is the target of aquaculture or not, together constitutes a small-scale ecosystem of the aquaculture environment. The lighting for aquaculture is usually configured in a relatively simple manner in the prior art, that is, one object and one lamp configuration, such as there are lights for fish farming and lights for aquatic plants. However, the prior art rarely sees a solution that can change the lighting mode with the tidal effect to deal with one or more organisms in the aquaculture environment based on the aquaculture environment, especially in the aquaculture environment with tidal effects. For example, aquatic products usually have a certain distribution pattern in the direction of water depth. For example, in an aquaculture environment containing aquatic plants and fish, the aquatic plants usually grow at the bottom of the water, while the fish have the flexibility to move in space. Studies have shown that light has an impact on the pigmentation of fish bodies. In some ornamental fish breeding industries, it is necessary to provide a certain spectrum of light induction when the ornamental fish grow, in order to obtain finished ornamental fish with rich colors. At the same time, some aquaculture personnel will use aquaculture sites to breed a variety of valuable commodities. For example, while breeding the above-mentioned fish, they also use the bottom space of the water body to breed aquatic plants, seaweed, etc., and the growth of these plants also requires the intervention of light.

[0051] According to a preferred embodiment, a lighting unit 1200 is provided, and the lighting unit 1200 has a light-transmitting container, and the light-transmitting container has a controllable light-emitting component arranged therein. The light-transmitting container is, for example, constructed as a glass tube. The light-emitting component may have one or more LED components, in particular an LED circuit board, and the LED component extends along the light-transmitting container. In one embodiment, the light-emitting component does not completely occupy the entire internal volume of the light-transmitting container, so that there is still space around the light-emitting component in the container. In the case where there is gas in the space, or a part of the liquid is filled, the density of the lighting unit 1200 as a whole can be controlled to be less than or equal to the density of the water body in the aquaculture environment where it is located, so that the lighting unit 1200 can work in a floating manner on the water surface or in the water body. The lighting unit 1200 may have a filling liquid at an appropriate position, for example, at the free end of the lower part of the light-transmitting container. In one embodiment, by configuring the size and position of the light-emitting component and / or adjusting the amount and position of the filling liquid added, it is possible to make at least most of the light emitted by the light-emitting component enter the water body through the transmission of the filling liquid.

[0052] In another embodiment, by configuring the size and position of the light-emitting component and / or adjusting the amount and position of the filling liquid, part of the light emitted by the light-emitting component can enter the water body through the filling liquid, and part of the light can enter the water body without being transmitted by the filling liquid. On this basis, the light after being transmitted by the filling liquid can be irradiated to a certain aquatic product in a certain layer of the corresponding water body depth layer in a manner different from at least one light parameter of the light not transmitted by the filling liquid, and the aquatic product is at least different from another aquatic product in another layer that receives the light that is not transmitted by the filling liquid. For example, the filling liquid is deposited at the bottom position of the light-transmitting container of the light-emitting component under the action of basic gravity, and the light transmitted by it can only and mainly irradiate the bottom layer of the water body, and the aquatic products at the bottom layer can be, for example, water plants. Due to the influence of gravity, the light emitted by the light-emitting component that is not blocked by the filling liquid can only and mainly irradiate the middle or top layer of the water body, and the aquatic products at the middle or top layer can be, for example, fish. At least one light parameter of the light transmitted through the filling liquid is different from the light transmitted without the filling liquid. For example, in the above-mentioned aquatic configuration mode, the light parameter is selected as the light band. The light band required for the growth of aquatic plants is mainly concentrated in the blue light band. In this band, aquatic plants can grow in a better growth environment. Correspondingly, based on the principle of light filtering, the filling liquid can be configured to be blue, and the light passing through the filling liquid can be filtered into the blue band light required for the growth of aquatic plants. For the growth of some fish, a certain amount of full-spectrum light that imitates sunlight is needed to regulate their biological clocks, and then the living habits of some fish can be appropriately adjusted, thereby achieving better breeding results in some aspects. In the configuration mode exemplified above, fish live in the middle and upper layers of the water body, while aquatic plants grow in the bottom sand layer. Therefore, by reasonably configuring the size and position of the filling liquid and / or the light-emitting component, the light-emitting component can simultaneously produce differentiated lighting for aquatic products at different levels. In addition, thanks to the structural configuration of the lighting unit 1200 of this embodiment that at least utilizes buoyancy to maintain its position in the water body, it can automatically adjust its height based on changes in the depth of the water body, so that at any water surface height, the light emitted by the lighting unit 1200 always moves with the changes in the height of each layer of the water body.

[0053] Furthermore, the lighting unit 1200 can cause the position of itself and / or the filling liquid and / or the light-emitting component therein to change in the longitudinal direction based on the tidal effect, so that the filling liquid in the lighting unit 1200 and the light-emitting component move relative to each other, thereby generating illumination of adapted light quality for different layers in the water body at least in multiple nodes of the tidal effect. Specifically, the tidal effect has at least two larger nodes, namely the high tide node and the low tide node. The two nodes have different effects on aquatic products living in each layer of the water body. For example, since the low tide will wash the nutrients on the shore to the offshore area, marine fish will gather and prey on the shore at low tide. Similarly, water plants are more likely to be exposed to light and carry out photosynthesis at low tide, while water plants usually enter respiration at high tide, and at this time, water plants begin to grow. The growth process of water plants also requires certain control signal light to control its growth characteristics, such as the color rendering characteristics of some ornamental water plants. This kind of illumination is different from the full spectrum illumination of photosynthesis, and is usually illumination in a single spectrum range. Therefore, based on the above-mentioned implementation of the present scheme, for example, when there are fish and aquatic plants and aquatic products in the water body at the same time, by configuring the relative position relationship between the filling liquid and the light-emitting component in the lighting unit 1200, at the high tide node, the light-emitting component and the filling liquid have a first position relationship, and at the low tide node, based on the change of the water level, the light-emitting component and the filling liquid have a second position relationship, so that the light transmitted through the filling liquid and the light not transmitted through the filling liquid can change in different nodes, and then the aquatic plants and fish receive different lighting in different nodes. A feasible example is that the light-transmitting container of the lighting unit 1200 is configured as a long tubular structure, and the tube length is configured to at least enable one end of the container to contact the bottom of the water body, and the other end to extend out or be flush with the surface of the water body. Further, the light-transmitting container is upright in the water body, and its bottom can be fixed in the water body by, for example, inserting into the gravel at the bottom of the water body. The light-transmitting container is a sandwich structure, that is, its wall has a hollow space, and a filling liquid is stored in the hollow space. To prevent the liquid in the water body from mixing with the filling liquid, the hollow space can be set as a closed space or a closable space, and a light-emitting component is arranged in the inner space of the tube of the light-transmitting container. Further, the volume of the light-emitting component is smaller than the inner volume of the tube of the light-transmitting container. Further, the light-emitting component is constructed as a movable structure that can move in the light-transmitting container pipe, for example, it is constructed as a wrapped pipe section structure similar to the elevator in the structural mode of the elevator cooperating with the elevator shaft, and a light-emitting lamp bead is arranged in the pipe section. To prevent the lamp bead from failing when it encounters water, the light-emitting component has an external wrapping. Preferably, there is air in the wrapping of the light-emitting component, so that the light-emitting component can at least float in the water body. The water in the water body can enter the tube of the light-transmitting container, and preferably, the liquid level in the tube can change with the change of the liquid level of the water body outside the tube. Preferably, the two liquid levels are almost flush.For example, an opening is provided near the bottom of the water body in the light-transmitting container, and the opening passes through the interlayer space of the light-transmitting container and is not connected to the interlayer space, so that the water outside the tube can be connected to the inside of the tube, so that water consistent with the liquid level outside the tube can be flushed into the tube, so that the light-emitting component arranged in the tube can be lifted by buoyancy. Under the action of the tide, the light-emitting component in the tube can move up and down in the space inside the tube as the water level of the external water body rises and falls. In contrast, the filling liquid in the interlayer of the tube wall is fixed in relative position because it is not in contact with the outside world, thereby forming a situation in which the light-emitting component can move relative to the filling liquid by utilizing the action of the tide. Furthermore, the light-emitting component is configured to emit full-spectrum light or simulate daylight, the filling liquid is configured to filter the light emitted by the light-emitting component into a spectrum for regulating the growth of aquatic plants, and the filling liquid is configured to gather in the upper layer of the water body. At high tide, the light-emitting component rises with the water level, so that it is located in the upper layer of the transparent container. At this time, the light it irradiates is irradiated into the water in the form of being filtered by the filling liquid. Since the aquatic plants are in the process of respiration at high tide, the filtered pipeline provides a regulatory effect on the growth of aquatic plants; at low tide, the light-emitting component drops with the water level, so that it is located in the lower layer of the transparent container. At this time, the light it irradiates is irradiated into the water in the form of being not filtered by the filling liquid. At this time, the aquatic plants are in the process of photosynthesis. The full-spectrum illumination of the light-emitting component can provide sufficient light energy for the aquatic plants, especially at low tide, when a large part of the time is at night, that is, the external environment cannot provide enough light to the aquatic plants. At this time, the light-emitting component can ensure that the aquatic plants can continue to photosynthesize. Furthermore, the nodes of tidal action are not limited to high tide nodes and low tide nodes. Nodes in any process, especially stage nodes where the water level remains at a certain height for a period of time, can be used as an object. At this time, by designing light-emitting components and / or filling liquids that move with the water level of the water body, the two can form different relative position relationships in each node. By designing whether the light-emitting components emit light through the filling liquid or through various filling liquids in each relative position relationship, illumination modes with different light parameters can be achieved. For example, layered filling liquids are designed, and each filling liquid has a different light filtering effect. For example, one filling liquid filters light into blue light, and another filling liquid filters light into red light. Blue light is used for lighting aquatic plants, and red light is used to induce color rendering characteristics of ornamental fish.

[0054] In addition to the above-mentioned structural forms, the structural configuration that can cause the relative position of the light-emitting component and the filling liquid to change based on the change of the water level of the water body can also have other forms. For example, the light-emitting component can be relatively fixed, and the buoyancy of the water level can be used to drive the filling liquid to move. Even, the water body itself can be used to form the filling liquid. For example, the interlayer wall of a transparent container with an interlayer is set to a structure that can be connected to the water body, and a material that can dissolve in the water body and change the color of the water body is pre-set in the interlayer space, or a material that is insoluble in water but can be evenly dispersed in the water body, such as some pigments that can evaporate for a long time, and colored powder materials. When the water level of the water body changes due to the action of the tide, the water level in the interlayer wall of the transparent container also changes accordingly, and the water body enters or flows out of the interlayer wall. At the same time, due to the setting of the above materials, the water body and the colored material can be combined to form a combined liquid that can replace the above filling liquid, which can achieve a similar filtering function.

[0055] The above scheme can automatically change and provide corresponding lighting according to the different growth needs of aquatic products at different water levels at different times based on the effect of tides, and the driving process does not require the use of additional driving structures, stage detection equipment or complex overall structures. Only the changes in water state caused by simple tidal effects can realize automatic and changing lighting regulation. This scheme is significantly better than conventional aquatic lighting methods. In multi-level and multi-aquaculture modes, it can achieve relatively higher aquaculture effects, especially for aquaculture in the nearshore areas of seas and large lakes, or aquaculture scenes that simulate the above environments, and has excellent effects.

[0056] The technical solution can be operated with salt water or fresh water. The aquaculture water 120 is guided and circulated in a closed pipeline unit. Preferably, the first organism can be a fish, especially a carnivorous fish, or a saltwater fish or a freshwater fish. It can also be a mollusk, such as oysters, mussels, etc., or a crustacean, such as shrimp. The first breeding unit 100 can be used to hold the aquaculture water 110 or treated water of the first organism. Preferably, the aquaculture water 110 can be salt water or fresh water. Preferably, the first breeding unit 100 can be in the shape of a square box, or a conical or cylindrical shape can be selected according to the liquid pressure of the actual environment, or a cube with rounded corner areas. The material of the first breeding unit 100 can be a synthetic material or metal, wood or cement.

[0057] A culture substrate 500, such as sand, may be present at the bottom of the first culture unit 100. The water inlet and outlet for the culture water 120 are connected to the first connecting channel 200, such as a closed pipeline in the form of a pipe or hose. It may also be a partially open pipeline or channel.

[0058] In addition, the present invention also includes a second breeding unit 300 for breeding a second organism 310, a fourth breeding unit 1000 for breeding a fourth organism 1100, and a third breeding unit 400. The first breeding unit 100, the second breeding unit 300, the fourth breeding unit 1000, and the third breeding unit 400 as required can exist in multiples and stacked by mutual contact and support. The first breeding unit 100, the second breeding unit 300, the fourth breeding unit 1000 or the container stack and the third breeding unit 400 as required can be located on a chassis, for example. The shapes and sizes of the first breeding unit 100, the second breeding unit 300, and the fourth breeding unit 1000 can be consistent. The second breeding unit 300 is flatter or lower than the first breeding unit 100.

[0059] The first breeding unit 100, the second breeding unit 300, the fourth breeding unit 1000 and the third breeding unit 400 can be hydraulically connected to each other in a water circuit for breeding water 120. The first breeding unit 100 with the first organism 110 is connected to the second breeding unit 300 for breeding the second organism 310 through the first connecting channel 200 of the breeding water 120. When there are a plurality of the second breeding units 300, several breeding units can be connected to each other in an overlapping manner. The second organism 310 is used to feed and supply the first organism 110 with live feed. The second organism 310 is, for example, a marine worm, a polychaete ringworm or a sandworm. The second breeding unit 300 with the second organism 310 can filter particulate matter from the breeding water 120 on the one hand, for example, the worm can preliminarily process the particulate matter from the first breeding unit 100, wherein the particulate matter can be particulate excrement, feed residue or other solid matter of the first organism 110 in the first breeding unit 100. These particulate matter are absorbed by the second organism 310 and removed from the breeding water 120. Preferably, the second organism 310 can be a worm, a polychaete ringworm or a sandworm, etc., which can be fed with granular substances. The combined second breeding unit 300 and the breeding water 120 are connected to the first breeding unit 100 through the first separation unit 700. The second breeding unit 300 or the combined second breeding unit 300 can be connected to the second separation unit 900 through the first connecting channel 200, and the second separation unit 900 is used to filter the dissolved substances in the breeding water 120, especially the dissolved excrement of the first organism 110. The second separation unit 900 is connected to the first separation unit 700. Here, the second separation unit 900 is placed after the combined second breeding unit 300 in the flow direction. Preferably, the second separation unit 900 can be a plant filter or a biological filter with microorganisms.

[0060] Furthermore, the second farming unit 300 with the second organism 310 and the first farming unit 100 are also connected in the feeding unit 800. The second organism 310 is used as live feed for feeding the first organism 110 and is transferred to the first farming unit 100 in an appropriate manner.

[0061] The third culture unit 400 can also be connected to the feeding unit 800. Preferably, the feeding unit 800 is configured as a photobioreactor for microalgae culture. In the third culture unit 400, algae, in particular microalgae, are cultured in an algae suspension. Nutrients and light for photosynthesis can be supplied to the algae. The algae production cycle can last, for example, 1 to 2 weeks.

[0062] The algae culture can be transported to the second organism 310 through the pipeline unit to be used for feeding the second organism 310. The second organism 310 and the first organism 110 can be fed with algae. If the algae are not enough to feed the second organism 310 and the first organism 110, other nutrients can be added to the first organism 110 and the second organism 310. Fresh water can be input at the water inlet as needed. In addition, an oxygenator can be provided in the pipeline unit.

[0063] The first breeding unit 100 is connected to the pump unit on the inlet side through the first connecting channel 200 on the outflow side. On the outlet side, the pump unit has a plurality of first connecting channels 200. The pump unit is connected to the water inlet of the first breeding unit 100 on one side through the reflux unit. In addition, the pump unit is connected to the second breeding unit 300 of the combined type on the inflow side through the first connecting channel 200.

[0064] The third breeding unit 400 is also connected to the pump unit on the inflow side through the first connecting channel 200. The first connecting channel 200 may have the aforementioned water inlet and water outlet. On the outflow side, the third breeding unit 400 is connected to the combined second breeding unit 300.

[0065] A portion of the first connecting channel 200 may be composed of active delivery pipelines in which pump pressure acts. The other first connecting channels 200 and the return unit may be passive delivery pipelines in which the aquaculture water 120 flows by gravity.

[0066] The live second organism 310 is given into the breeding water 120 and can float or swim there and be eaten by the first organism 110. A cultivation matrix 500, in particular a sand layer, is also provided on the bottom of the container. The cultivation matrix 500 can also contain the second organism 310, in particular polychaete ringworms or sandworms. Foraging fish can stir the cultivation matrix 500 and eat the second organism 310 there. The first breeding unit 100 has a water inlet. The fluid inflow portion can have a submerged pipe including a plurality of discharge openings. A water outlet is provided on the bottom of the container. The fluid outflow portion can be constructed in the same manner as in the second breeding unit 300 and the combined second breeding unit 300.

[0067] The fourth breeding unit 1000 is equipped with a water inlet and a water outlet. The fourth organism 1100 is adapted to the respective breeding water 120. The fourth organism 1100 takes root in an inorganic substrate, which is maintained in a permeable cultivation pot. Plant roots can thus be flowed through by the breeding water 120. These plant roots can absorb the dissolved excrement contained in the breeding water 120 as nutrients and clean the water. The fourth organism 1100 can be an economic plant and an edible plant. The plant is fed by the excrement dissolved in the breeding water 120 and can be harvested at a given time. In the case of fresh water, other appropriate fourth organisms 1100, such as vegetables, are used. The water outlet of the fourth breeding unit 1000 can be constructed in a similar manner to that in the first breeding unit 100 and the second breeding unit 300.

[0068] It should be noted that the above specific embodiments are exemplary, and those skilled in the art can come up with various solutions inspired by the disclosure of the present invention, and these solutions also belong to the disclosure scope of the present invention and fall within the protection scope of the present invention. Those skilled in the art should understand that the present invention description and its drawings are illustrative and do not constitute a limitation of the claims. The protection scope of the present invention is defined by the claims and their equivalents.

Claims

1. An aquaculture system comprising a lighting device, comprising: A first culture unit (100) for culture a first organism (110), the first organism being a fish, a mollusk or a crustacean; A second culture unit (300) for culturing a second organism (310), wherein the second organism is one or more of a marine worm, a polychaete ringworm, a lugworm, and a Watt's worm; a third culture unit (400) for cultivating a third organism, the third organism being algae; a lighting unit (1200), It is characterized in that The lighting unit (1200) comprises a plurality of independently controllable light emitting components respectively located at predetermined depths of the first farming unit (100), the second farming unit (300) and the third farming unit (400), The light emitting assembly is controlled by a control unit to generate illumination of a wavelength band related to time and to the first organism (110) in the first breeding unit (100), the second organism (310) in the second breeding unit (300) and / or the third organism in the third breeding unit (400), The light cycles of the plurality of light emitting components correspond to the light exposure time periods of the first organism (110), the second organism (310) and / or the third organism.

2. The aquaculture system according to claim 1, characterized in that: The aquaculture water flows through the first aquaculture unit (100), the second aquaculture unit (300) and the third aquaculture unit (400) in sequence, and the aquaculture water flowing out of the third aquaculture unit (400) returns to the first aquaculture unit (100).

3. The aquaculture system according to claim 1 or 2, characterized in that: The lighting unit (1200) comprises a light-transmitting container and the light-emitting component arranged in the light-transmitting container, wherein the light-transmitting container is configured to separate liquid from the light-emitting component, wherein a filling liquid is filled between the light-transmitting container and the light-emitting component.

4. The aquaculture system according to any one of claims 1 to 3, characterized in that: The light-emitting component at least partially occupies the inner volume of the light-transmitting container, so that there is space around the light-emitting component in the light-transmitting container, wherein: When there is gas or part of the liquid in the internal space of the light-transmitting container, the density of the lighting unit (1200) can be controlled to be less than or equal to the density of the water body in the aquaculture environment in which it is located, so that the lighting unit (1200) can operate in a manner of floating on the water surface or in the water body.

5. The aquaculture system according to any one of claims 1 to 4, characterized in that: The light emitting component is configured to emit full spectrum light or simulate daylight light. There is a filling liquid in the internal space of the light-transmitting container, which is configured to filter the light emitted by the light-emitting component into a spectrum for regulating the growth of aquatic plants, and the filling liquid is configured to gather in the upper layer of the water body.

6. The aquaculture system according to any one of claims 1 to 5, characterized in that: The size and position of the light-emitting component and / or the amount and position of the filling liquid added can be adjusted so that at least part of the light emitted by the light-emitting component is transmitted through the filling liquid of the light-transmitting container to enter the water body.

7. The aquaculture system according to any one of claims 1 to 6, characterized in that: The light transmitted through the filling liquid can illuminate the first organism (110), the second organism (310) and / or the third organism in the corresponding water depth layer in a manner different from at least one light parameter of the light not transmitted through the filling liquid. The first organism (110), the second organism (310) and / or the third organism is at least different from another organism in another layer that receives light that is not transmitted through the filling liquid.

8. The aquaculture system according to any one of claims 1 to 7, characterized in that: The second breeding unit (300) for breeding the second organism (310) comprises a water supply and drainage unit (600) capable of changing the water level by water supply and drainage, thereby simulating low tide and high tide in the second breeding unit (300).

9. The aquaculture system according to any one of claims 1 to 8, characterized in that: The lighting unit (1200) can cause the longitudinal position of itself and / or the filling liquid therein and / or the light-emitting component therein to change based on the tidal effect, so that the filling liquid in the lighting unit (1200) and the light-emitting component move relative to each other, thereby generating illumination with adapted light quality for several layers in the water body at least within several nodes of the tidal effect.

10. The aquaculture system according to any one of claims 1 to 9, characterized in that: The lighting unit (1200) at least utilizes buoyancy to maintain its position in the water body, and is capable of adjusting the height of the lighting unit (1200) based on changes in the depth of the water body, so that the light emitted by the lighting unit (1200) at any water surface height changes based on the height of each layer of the water body.

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