Aquaculture facility, fish production and procedures for operating an aquaculture facility

Abstract

The invention relates to an aquaculture system with a tank (1) for raising aquatic organisms, in particular fish (2), preferably saltwater fish, wherein the tank is divided into tank sections (4). The aquatic organisms are kept in the individual tank sections in groups with different life stages. The feed quantity is added via feeding devices (5) and is individually adjusted in the tank sections to the feed conversion ratio of the aquatic organisms, which depends on the respective life stage. The tank (1) is divided by openable partitions (3). Furthermore, the invention relates to fish production for the rearing of fish. The invention further relates to a corresponding method for operating an aquaculture plant for the rearing of aquatic organisms, in particular fish.

Description

[0001] The invention relates to an aquaculture plant with a tank for the breeding of aquatic organisms, in particular fish, preferably saltwater fish, wherein the tank is divided into tank sections.

[0002] The invention further relates to a fish production system with an aquaculture system and system supply for the rearing of fish.

[0003] Furthermore, the invention relates to a corresponding method for operating an aquaculture plant for the breeding of aquatic organisms, in particular fish.

[0004] An aquaculture facility is a facility for the controlled breeding, production, and harvesting of aquatic organisms. Given the increasing demand for food products, aquaculture facilities are a suitable sustainable approach to addressing the problem of overfishing in the world's oceans. Alternatively, they can be used for breeding and stocking for the purpose of repopulating natural or artificial bodies of water.

[0005] Aquaculture systems are known in practice in numerous designs. They can be designed as open or closed systems. Open systems are devices integrated into a natural environment, particularly in lakes, seas, and flowing waters, and utilize ecological cycles, especially the water cycle, to raise aquatic organisms.

[0006] Aquaculture facilities of the type in question are closed-loop systems, largely isolated from environmental influences, comprising at least one tank containing process water, particularly salt or fresh water, and an inlet and outlet, which are open or gas-tight to the environment. In a closed-loop system, the process water is conveniently treated and recirculated using mechanical treatment technology and biological filtration equipment outside the tank to reduce water consumption. The water change rate in a closed-loop system is usually less than 10%.

[0007] When raising aquatic organisms in a closed system, the natural material cycles must be incorporated into technical devices to maintain the health of the aquatic organisms and enable optimal growth. In an aquaculture facility, this is achieved by monitoring and controlling the water biology, in particular the pH value, oxygen content, and disease and pest infestation, as well as by treating and separating waste products and pollutants using mechanical treatment technology and biological filtration devices. Relevant aquaculture systems of the type in question are known in various designs in the prior art, and reference is made to DE 10 2019 100 296 A1 as an example.

[0008] Keeping process water free of contaminants represents a significant challenge in practice and is always in need of improvement. Particulate substances, especially metabolized waste products from aquatic organisms, but also feed residues, must be removed from the aquaculture facility using mechanical separation devices, which increases operating costs. Furthermore, excess feed that cannot be utilized by aquatic organisms increases operating expenses, so optimizing feed intake in the devices implemented in practice is economically desirable.

[0009] The present invention is therefore based on the object of designing and developing an aquaculture facility of the type mentioned above in such a way that it can be operated economically. The quality of the aquatic organisms cultivated should be optimized. Furthermore, the facility should be distinguished from competitive facilities. Furthermore, a fish production system should be specified that allows an aquaculture facility for the breeding of fish to be operated economically. Furthermore, a corresponding method should be specified.

[0010] According to the invention, the above object is achieved with respect to the aquaculture facility by the features of patent claim 1. Accordingly, the aquaculture facility in question comprises a tank for raising aquatic organisms, in particular fish, preferably saltwater fish. The aquatic organisms are kept in separate groups in the tank sections according to different life stages. The aquatic organisms in the individual groups are at the same life stage. Each tank section is assigned a feeding device, with the amount of feed to be added being individually adjustable for each feeding device. The amount of feed is adjusted depending on the feed conversion ratio (FCR) of the aquatic organisms.

[0011] With regard to fish production, the above object is achieved by the features of the independent claim 21. According to this, the fish production comprises an aquaculture facility according to one of claims 1 to 20.

[0012] With regard to the method, the above object is achieved by the features of the independent claim 24. This provides a method for operating an aquaculture facility for the breeding of aquatic organisms, in particular fish, preferably saltwater fish, according to one of claims 1 to 20.

[0013] According to the invention, it has been recognized that the tank of the aquaculture facility must be divided into separate tank sections. The rearing of the aquatic organisms takes place in these tank sections in separate groups. The amount of feed supplied to each tank section is individually adjusted depending on a feed conversion ratio. Only the amount of feed is supplied to each tank section that the aquatic organisms can utilize for optimal growth according to their current life stage and the prevailing living conditions, in particular the water temperature. This allows the consumption of feed during the rearing of aquatic organisms to be optimized and reduced. In addition, the effort required to treat the process water in the aquaculture facility is reduced due to the reduced amount of particulate substances, primarily the unused feed.Accordingly, operating costs of an aquaculture facility can be reduced.

[0014] The feed conversion ratio (FCR) is defined as the ratio of the amount of feed added (in kg) to the change in the net body weight of the aquatic organisms (in kg). It depends on the different life stages and thus on the net body weight of the aquatic organisms. Small aquatic organisms utilize the feed supplied to them better than large ones in terms of weight gain in the tank. A positive weight gain is achieved per amount of feed added.

[0015] The term "life stage" of an aquatic organism is to be understood in the broadest sense and describes the different development and growth phases throughout the entire life cycle of an aquatic organism. For fish, this particularly refers to the period from larval stage to reaching slaughter weight. The aquatic organisms are kept in separate sections of the aquaculture facility in groups of the same life stage.

[0016] The term “net body weight” of an aquatic organism refers to the physical mass of the organism without additional weight, in particular without adhering materials and artificial substrates, such as those found in the cultivation of mussels.

[0017] The aquaculture system is advantageously suited for the breeding of aquatic animals, especially fish, preferably saltwater fish, but also freshwater and shallow water creatures, especially mussels, crabs, shrimp, snails, and oysters. The facility can also be used for the cultivation of aquatic plants such as algae, as well as hydroponic crops such as lettuce and herbs. An aquaponics system is also possible.

[0018] According to the invention, the aquatic organisms in the tank are kept in groups according to their life stage. To this end, the tank is divided into separate sections using water-permeable dividers, such as nets, perforated sheets, or mesh panels, which nevertheless allow for the exchange of process water between the individual sections.

[0019] In an advantageous embodiment, the separating device between the tank sections is designed such that it can be opened in order to enable a simple exchange of the aquatic organisms between one tank section and another without the aquatic organisms having to be removed from the tank.

[0020] Another advantage of the aquaculture facility is that it has tank sections of varying sizes. The size of the tank sections increases with the life stage of the aquatic organisms, so that at a later life stage, they must be kept in a larger tank section. As the aquatic organisms grow over time, the stocking density increases, expressed as the ratio of net body weight in kg to the volume of process water in m³. 3, continuously increases in each tank section. Therefore, the aquatic organisms are kept in one tank section for a defined period of time, preferably four months, depending on their life stage and then relocated to a larger tank section.

[0021] Alternatively, the time of relocation to a larger tank section can be determined by a maximum stocking density. For example, for a tank with three sections, a maximum stocking density of 20 kg / m 3 for the smallest section, 40 kg / m 3 for the medium section and 80 kg / m 3 be chosen for the largest section.

[0022] Preferably, the pool sections are arranged in ascending order of size.

[0023] In a technically advantageous embodiment of the aquaculture system, the amount of feed to be added to the individual sections of the culture tank is determined by the net body weight of the aquatic organisms. For example, the amount of feed to be added per tank section can be determined using an empirical correlation plotted as the feed conversion ratio against the net body weight of a specific aquatic organism.

[0024] Preferably, the feed conversion ratio is in a range between 0.8 and 3.

[0025] Furthermore, the aquaculture facility can include a feeding system for automatic feeding and provide automatic feeding of the aquatic organisms, in which the amount of feed to be added is automatically determined individually for each tank section. For this purpose, the feeding system is expediently controlled depending on the feed conversion rate of the aquatic organisms.

[0026] Furthermore, the aquaculture plant can be equipped with a device for tempering the process water in the tank sections, for example with an air-water heat exchanger.

[0027] In an advantageous embodiment, at least one aeration device is provided in the tank of the aquaculture facility, which introduces ambient air into the process water. The air can be drawn in from the environment via a compressor, preferably a side-channel compressor, and flowed into the process water in the tank via at least one air supply line and at least one air nozzle.

[0028] Preferably, the at least one air nozzle in the individual basin section is arranged in such a way that a turbulent circular flow develops in the process water. This turbulent flow prevents the sedimentation of particulate substances contained in the process water.

[0029] In a further embodiment, the tank of the aquaculture facility comprises at least one oxygen supply device that introduces oxygen (O2) into the process water via oxygen supply lines. Preferably, technical oxygen is used. The oxygen supply device can comprise a pressure cylinder system and / or a PSA oxygen generator as the oxygen source.

[0030] The oxygen can be introduced into the process water via a ceramic diffuser located in at least one tank section. By forming small micro-gas bubbles, the oxygen can be adsorbed onto the process water with high efficiency. The ceramic diffuser is preferably used in combination with the pressure cylinder system as an oxygen source in the aquaculture facility for a short-term increase in the oxygen content in the process water, for example, for peak load coverage or emergency oxygen supply.

[0031] Furthermore, oxygen can be introduced into the process water via a low-head oxygenator (LHO). The low-head oxygenator comprises at least one reaction chamber, in particular a trickle-flow system, in which the interface of the process water introduced at the top of the column is enlarged. The additionally introduced oxygen adsorbs at the enlarged interface. The low-head oxygenator is preferably provided for continuous oxygen enrichment in the process water, as base load coverage, in combination with the PSA oxygen generator as the oxygen source.

[0032] In a further advantageous embodiment, the process water is circulated from the culture container in a closed circuit system by means of a pump via a fluid line.

[0033] It is advisable to set the flow rate of the main circulation pump in such a way that a sufficiently high water exchange rate ensures the removal of particulate substances and pollutants and / or prevents sedimentation of the particulate substances by turbulent flows in the basin sections.

[0034] The term "water exchange rate" is determined by the ratio of the pump's flow rate per unit of time to the total volume of process water in the tank. Ideally, the water exchange rate should be at least twice the tank volume per hour.

[0035] In a further advantageous embodiment, the aquaculture system comprises separation devices for separating particulate substances, in particular feed residues and excreta, from the process water. The separation of the particles is preferably size-selective, with coarse particles having a critical grain size greater than or equal to 60 µm and fine solids having a critical grain size less than 60 µm.

[0036] For coarse particles, a mechanical separation device, preferably a drum filter, is provided. The drum filter comprises a drum with a sieve insert of a defined mesh size, preferably less than 60 µm, a rinsing nozzle with a collecting channel, an inlet, and a return line.

[0037] The particle-enriched process water enters the drum interior via the inlet. The coarse particles are retained by the sieve insert. The drum is conveniently rotated section by section around its rotationally symmetrical axis at regular intervals, and the particle-laden section of the drum is cleaned by the spray nozzle. The resulting wastewater is discharged via the collecting trough. The purified, low-particle process water is preferably pumped into downstream water treatment systems.

[0038] Alternatively or in addition to the drum filter, a sedimentation tank can be provided in which the process water is treated by gravity, by enriching the near-ground wastewater with the particles and thus allowing the near-surface, low-particle process water to be returned.

[0039] For particles smaller than 60 µm, a skimmer can be provided that uses the principle of flotation as a separation mechanism. The skimmer comprises a vertical column, an inlet at the top and a return at the bottom of the column, as well as a system for generating air bubbles, preferably a venturi. The skimmer operates on a countercurrent principle, with the process water being fed in at the top of the column and exiting the device at the bottom of the column under gravity. The air bubbles introduced via the venturi system rise in the column due to buoyancy. During flotation, the fine particles adhere to the phase boundary of the rising air bubbles due to interfacial tension, leading to the formation of foam, which can be separated in the top of the column.

[0040] In another embodiment, an ozone generator is provided in the aquaculture facility's circulation system, which generates ozone from industrial or atmospheric oxygen under the influence of electrical energy. The resulting ozone serves to disinfect the process water by inactivating the bacteria it contains. Preferably, the ozone generator is connected to the skimmer and introduces the generated ozone into the skimmer. The ozone promotes foam formation in the skimmer.

[0041] In a further embodiment, the aquaculture facility comprises at least one biological filter device for converting toxic nitrogen compounds. This primarily involves the nitrogen from proteins, which is excreted, for example, as urea or ammonia. The conversion preferably takes place through an aerobic biofilter for nitrification. The bound nitrogen is converted to nitrate by bacterial oxidation in the presence of oxygen, preferably atmospheric oxygen. The bacteria that carry out the conversion are applied to a carrier material, preferably pellets.

[0042] In a further advantageous embodiment of the invention, an anaerobic biofilter can be provided for denitrification. This converts the nitrate from the aerobic biofilter into molecular nitrogen (N2) with the aid of bacteria in the absence of oxygen and with the addition of substrate, particularly a carbon source. The resulting gas can escape into the environment.

[0043] Furthermore, a device for removing carbon dioxide from the process water is advantageous. The process water is fed into a CO2 desorption device, designed as an airlift. The carbon dioxide (CO2) desorbs through interaction with the air bubbles as it rises in a vertically positioned column, and is thus removed from the process water. The degree of desorption of carbon dioxide from the process water is determined by the height of the water column within and the volume flow of ambient air supplied through it.

[0044] The fish production system according to the invention comprises an aquaculture facility of the type described above. Specifically, the aquaculture facility's tank, the air and oxygen supply devices, and the process water treatment devices can be housed in three standard containers arranged side by side. The facility's supply system comprises two spatially separated areas in another standard container arranged side by side alongside the standard containers of the aquaculture facility. The first area includes work areas for harvesting fish. The second area offers storage space for fish accessories, feed, operating materials, and facility spare parts, as well as space for the control cabinet, ozone generator, blower, oxygen generator, and feed equipment for the aquaculture facility.

[0045] In addition, fish production may include fish processing, which is housed in a standard container arranged alongside the standard containers of the aquaculture facility and facility supply. Fish processing may, in turn, comprise three areas: a hygiene area for staff, a cold storage area, and a processing area with a work surface for gutting, rinsing, weighing, grading, and packaging fish.

[0046] The method according to the invention comprises operating an aquaculture facility of the type described above for rearing aquatic organisms, in particular fish, preferably saltwater fish.

[0047] There are now various possibilities for advantageously embodying and developing the teaching of the present invention. For this purpose, reference is made, on the one hand, to the claims subordinate to claim 1 and, on the other hand, to the following explanation of preferred embodiments of the invention with reference to the drawings. In conjunction with the explanation of the preferred embodiments of the invention with reference to the drawings, generally preferred embodiments and developments of the teaching are also explained. The drawings show: Fig. 1 shows a schematic view of an embodiment of a tank with a plurality of tank sections, subdivided by openable separating devices and one feeding device individually assigned to each tank section; Fig. 2 shows a schematic view of an embodiment of an aquaculture facility with a basin according to Fig. 1 and a process water circuit, aeration and oxygen supply; Fig. 3 in a schematic view an embodiment of an aquaculture plant with a basin and a process water circuit according to Fig. 2 with mechanical treatment technology and biological filter system; Fig. 4 shows a schematic view of the spatial arrangement of the basin sections of different sizes of a basin with an openable separating device; Fig. 5 shows a schematic view of an embodiment of a fish production facility with aquaculture system and system supply, housed in four standard containers; Fig. 6 shows a schematic view of an embodiment of a fish production facility with aquaculture plant, plant supply and fish processing, housed in five standard containers; and Fig. 7 shows a diagram showing the dependence of the feed conversion ratio, plotted against the net body weight of the aquatic organisms.

[0048] Fig. 1 shows a schematic view of an embodiment of the tank (1) of an aquaculture facility in which groups of fish (2) are kept for rearing in process water. The tank (1) comprises two openable partitions (3) which subdivide the tank (1) into three tank sections (4) of different sizes in which the groups of fish (2) are kept separate from one another, sorted according to their life stage. Each of the tank sections (4) is assigned an individual feeding device (5) which is designed to supply the groups of fish (2) in the respective tank sections (4) with the amount of feed which can actually be utilized according to their life stage.

[0049] Fig. 2 shows the basin (1) of an aquaculture facility according to Fig. 1 with a pump (6) which conveys the process water via fluid lines in a closed process water circuit.

[0050] Furthermore, the basin (1) in the embodiment in Fig. 2 aeration with ambient air. Air is drawn in from the environment via a compressor (7) and transported into the tank (1) via an air supply line (8). The ambient air is introduced into the process water through the air nozzles (9). Furthermore, the tank (1) comprises a ceramic diffuser (10) for each tank section, which is connected to the oxygen source (12) via oxygen supply lines (11). Advantageously, several ceramic diffusers (10) can also be provided in the individual tank sections.

[0051] Fig. 3 shows the basin (1) of an aquaculture facility according to Fig. 2. A drum filter (13), an aerobic biofilter (14), and a low-head oxygenator (15) are also integrated into the closed process water circuit. The low-head oxygenator (15) is supplied with oxygen from an oxygen source (12). The aerobic biofilter (14) is connected to the compressor (7) via an air supply line (8).

[0052] Furthermore, a sedimentation tank (16) for separating particulate substances is connected to the drum filter (13). Part of the treated process water from the drum filter (13) is pumped into the skimmer (18) by a pump (17). Ozone is added to the process water in the skimmer (18) via an ozone generator (19). The other part of the treated process water from the drum filter (13) is pumped into the anaerobic biofilter (20) by another pump (17). Substrate (21) is also added to the anaerobic biofilter (20). After leaving the skimmer (18) and the anaerobic biofilter (20), the treated process water streams are pumped back into the tank (1).

[0053] Fig. Figure 4 shows the spatial layout of the tank sections (4) of the tank (1) of an aquaculture facility. The tank (1) has an L-shaped base and consists of three tank sections (4) of unequal size – a small, a medium, and a large tank section (4a, 4b, 4c). The tank sections (4) are spatially arranged such that the size increases from small to large. The small tank section (4a) borders one side of the middle tank section (4b), while the large tank section (4c) is arranged on the side of the middle tank section (4b) adjacent to it at a 90° angle. The tank sections (4) are separated from one another in the adjacent areas by an openable, water-permeable partition (22). The openable, water-permeable partition (22) is preferably designed as a net, perforated sheet, or grid.

[0054] Furthermore, in Fig. Figure 4 shows the arrangement of the air nozzles (9) in two pool sections (4b, 4c). One air nozzle (9) is positioned in a corner of the middle pool section (4b), and the nozzle opening is oriented such that the air flows out parallel to the pool wall (23). This creates a turbulent circular flow in the middle pool section (4b). In the large pool section (4c), two air nozzles (9) are positioned in diagonally opposite corners so that the nozzle openings face in opposite directions. Both air nozzles (9) flow out the air parallel to the pool wall (23), thereby creating a turbulent circular flow.

[0055] Fig. Figure 5 shows an embodiment of a fish production facility with an aquaculture facility (24) and facility supply (25), which are housed in four standard containers (26). The aquaculture facility (24) extends over three standard containers (26) arranged lengthwise next to one another. The tank (1) is located in the rear part of the aquaculture facility (24) and has an L-shaped base. Additionally, the standard containers (26) contain a drum filter (13), an aerobic biofilter (14), four parallel low-head oxygenators (15), a sedimentation tank (16), a skimmer (18), and an anaerobic biofilter (20). An air-water heat exchanger (27) is attached to the outside of a standard container (26) of the aquaculture facility (24). The standard container (26) for the system supply (25) is placed lengthwise on the standard containers (26) of the aquaculture system (24), resulting in a rectangular base area.The system's supply is divided into two spatially separate areas. The first area comprises a work area for fish removal (28) and a storage area (29) for fish accessories. The second area provides storage space (29) for feed, operating materials, and system spare parts, as well as space for a control cabinet (30), oxygen generator (31), an ozone generator (19), and feeding devices (5) for the tank sections (4) of the aquaculture systems (24). The blower (7) is preferably also located in this area.

[0056] Fig. 6 shows an embodiment of a fish production with aquaculture plant (24), plant supply (25) housed in standard containers (25) according to Fig. 6, which is expanded to include a fish processing unit (32) housed in a standard container (26). The standard container (26) for fish processing (32) is positioned lengthwise against the standard containers (26) for the plant supply (25), so that they form a rectangular footprint with the standard containers (26) for the aquaculture plant (24) and the plant supply (25). The fish processing unit (32) comprises a hygiene area (33) for employees, several processing areas (34), a packaging station (35), and a cold storage area (36).

[0057] Fig. Figure 7 shows a diagram with the schematic progression of the dependence of the feed conversion ratio on the net body weight of aquatic organisms in kg. Fig.As can be seen from the declining curve in Figure 7, the feed conversion ratio depends on the net body weight of the aquatic organisms and levels off with increasing net body weight. Aquatic organisms with a large net body weight utilize feed less effectively for growth than small aquatic organisms.

[0058] With regard to further advantageous embodiments of the device according to the invention, reference is made to the general part of the description and to the appended claims in order to avoid repetition.

[0059] Finally, it should be expressly pointed out that the embodiments of the device according to the invention described above serve only to explain the claimed teaching, but do not limit it to the embodiments. List of reference symbols 1 pool 2 group of fish 3 Openable separating device 4 Basin section 4a Small pool section 4b middle pelvic section 4c large basin section 5 Feeding device 6 Pump 7 compressors 8 Air supply line 9 Air nozzle 10 ceramic air diffusers 11 Oxygen supply line 12 Oxygen source 13 drum filters 14 Aerobic biofilter 15 Low-Head Oxygenator 16 sedimentation tanks 17 Pump 18 skimmers 19 Ozone generator 20 anaerobic biofilters 21 Substrat 22 Separator 23 Pool wall 24 aquaculture facility 25 Plant supply 26 standard containers 27 air-water heat exchangers 28 Working area for fishing 29 storage areas 30 control cabinet 31 oxygen generators 32 Fish processing 33 Hygiene area 34 processing area 35 packaging station 36 cold storage QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] DE 10 2019 100 296 A1

[0007]

Claims

[1] Aquaculture plant with a tank for the rearing of aquatic organisms, in particular fish, preferably saltwater fish, wherein the tank is divided into at least two, preferably three separate tank sections, wherein the aquatic organisms in the tank sections are kept separately from one another in groups according to different life stages, wherein the aquatic organisms of the individual groups are in the same life stage, wherein each tank section is assigned a feeding device, wherein the amount of feed to be added can be individually adjusted for each feeding device, and wherein the amount of feed is adjusted as a function of a feed conversion ratio (FCR) of the aquatic organisms. [2] Aquaculture plant according to claim 1, wherein the division into the individual tank sections is designed as an openable separating device, preferably in the form of a net, perforated and / or grid sheet. [3] Aquaculture plant according to claim 1 or 2, wherein the size of the individual tank sections is unequal, wherein the size of the tank sections increases with the advancing life stage of the aquatic organisms and wherein the tank sections are arranged in ascending order of size. [4] Aquaculture plant according to one of claims 1 to 3, wherein the feed conversion ratio is determined by the body weight of the aquatic organisms, and wherein the feed conversion ratio is between 0.8 and 3. [5] Aquaculture plant according to one of claims 1 to 4, wherein the aquaculture plant comprises a temperature control device for the process water, preferably an air-water heat exchanger. [6] Aquaculture plant according to one of claims 1 to 5, wherein the tank comprises at least one device for aeration with ambient air, preferably a side channel compressor. [7] Aquaculture plant according to claim 6, wherein the ambient air is introduced into at least one tank section via at least one air nozzle, wherein the at least one air nozzle is arranged in the at least one tank section such that a turbulent circular flow is created in the tank section, and wherein the circular flow inhibits sedimentation of particulate substances in the tank section. [8] Aquaculture plant according to one of claims 1 to 7, wherein a supply device for introducing oxygen, preferably with technical oxygen, is provided for each individual tank area. [9] Aquaculture plant according to claim 8, wherein the oxygen supply comprises a pressurised oxygen storage device, in particular a compressed gas cylinder, as the oxygen source. [10] Aquaculture plant according to claim 8 or 9, wherein the absorption of oxygen in the process water comprises at least one ceramic diffuser. [11] Aquaculture plant according to one of claims 1 to 10, wherein at least one pump is provided which conveys the process water via a fluid line in a closed process water circuit. [12] Aquaculture system according to claim 11, wherein the pump has a flow volume to ensure a water change rate in the tank of at least twice the tank volume per hour. [13] Aquaculture plant according to one of claims 11 or 12, wherein the process water circuit comprises at least one separation device for separating particulate substances. [14] Aquaculture plant according to claim 13, wherein the separation device comprises a drum filter and / or a sedimentation tank, preferably for separating particulate substances with a critical grain size of at least 60 µm. [15] Aquaculture plant according to one of claims 13 or 14, wherein the separation device comprises a skimmer, preferably for separating particulate substances with a critical grain size of less than 60 µm. [16] Aquaculture plant according to one of claims 1 to 15, wherein an ozone generator is provided, and wherein the ozone serves to disinfect the culture water. [17] Aquaculture plant according to one of claims 12 to 16, wherein the process water circuit comprises at least one biological filter device for converting pollutants dissolved in the process water, preferably an aerobic biofilter for nitrification. [18] Aquaculture plant according to claim 17, wherein an anaerobic biofilter is provided for denitrification, in particular with the supply of substrate, preferably a carbon source. [19] Aquaculture plant according to one of claims 11 to 18, wherein the process water circuit comprises at least one device for oxygen absorption, preferably a low-head oxygenator. [20] Aquaculture plant according to one of claims 11 to 19, wherein the process water circuit comprises at least one device for carbon dioxide desorption, preferably an airlift. [21] Fish production comprising an aquaculture facility according to any one of claims 1 to 20. [22] Fish production according to claim 21, with a plant supply, wherein the aquaculture plant is accommodated in three standard containers, in particular in three 40-foot insulated containers, and the plant supply is accommodated in one standard container, in particular in one 40-foot insulated container, wherein the plant supply comprises an area for fishing and storage facilities for fish accessories, feed, operating materials and plant spare parts, and wherein the standard container of the plant supply is preferably arranged longitudinally to the standard containers of the aquaculture plant. [23] Fish production according to claim 22, comprising a fish processing facility, wherein the fish processing facility is housed in a standard container, in particular in a 40-foot insulated container, wherein the fish processing facility comprises a hygiene area, a work area for processing and packaging, and a cooling room, and wherein the standard container for the fish processing facility is preferably arranged alongside the standard container for the plant supply. [24] Method for operating an aquaculture plant with a tank for rearing aquatic organisms, in particular fish, preferably saltwater fish, according to one of claims 1 to 20.

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