Factory-like circulating water culture device for mandarin shrimps in water electrolysis mode

Abstract

According to the factory-like circulating water culture device for the mandarin shrimps in the water electrolysis mode, the water electrolysis device replaces a protein separator, a biochemical treatment pond, an ultraviolet sterilization device and other large-scale devices and is used in cooperation with the microstrainer, the occupied area of water treatment facilities and equipment is greatly reduced, and the production cost is reduced. And chlorine-containing compounds generated by electrolyzed water kill pathogenic microorganisms in water, so that the energy consumption is greatly reduced, pathogenic bacteria are killed, and normal growth of cultured objects is ensured. The production cost is reduced, the profit is improved, and the pollution of tail water discharge to the environment is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the aquaculture technical field relates to the cultivation of gold shrimp, specifically relates to a kind of device of factory circulation water aquaculture gold shrimp under the mode of electrolytic water. BACKGROUND

[0002] Gold shrimp is also called African spotted prawn, and the parent of the shrimp is derived from wild spotted prawn in Africa.Gold shrimp is widely adaptable, and its suitable water temperature is 25-32℃, and its feeding decreases below 20℃.Gold shrimp has large body size, and the maximum individual length reaches 33cm, and the body weight is 500-600g.Gold shrimp grows fast, and 20-30 thousand individuals are released per 667m 2 When the water temperature is above 27℃ and the salinity is 10‰-25‰, gold shrimp can reach the market specification of 40 individuals per kg in 60d.Meanwhile, gold shrimp is omnivorous, has strong disease resistance, and has characteristics such as dryness tolerance and low oxygen tolerance.In 2017, small-scale aquaculture was started in China, and the price was more than 3 times the price of South American white prawn, and the unit output value could be increased by 20%-30%.

[0003] In the field of factory circulation water aquaculture, the traditional water treatment is to control the spread and invasion of pathogenic microorganisms in a closed environment, but it cannot be avoided.After water treatment, the water is flowed back to the shrimp pond after microfiltration, protein separator, biochemical treatment tank, ultraviolet sterilization and pump pool oxygenation.Inorganic matter, organic matter and harmful substances such as ammonia nitrogen in water body are recycled by physical, chemical and biological treatment.The treatment method leads to high energy consumption of various equipment, large equipment occupation, difficult maintenance and repair of various equipment, and cannot solve the problem of pathogen invasion.

[0004] Electrolytic water refers to the chemical reaction of water after electrolysis, and alkaline electrolytic water and acidic electrolytic water are obtained at the anode and cathode respectively.The acidic electrolytic water has strong oxidation ability and contains a certain concentration of chlorine-containing compounds, which can penetrate the cell membrane of microorganisms to cause bacterial death, and the concentration has no toxic effect on the cultured objects, so as to avoid infection of shrimp by various pathogens during cultivation. SUMMARY

[0005] The utility model in the prior art provides a device and method for factory circulation water aquaculture of gold shrimp under the mode of electrolytic water, which replaces large equipment such as protein separator, biochemical treatment tank and ultraviolet sterilization, and ensures more efficient cultivation.

[0006] In order to achieve the above purpose, the specific technical solutions adopted by the utility model are as follows:

[0007] In a first aspect, this utility model provides a device for factory-scale recirculating aquaculture of king prawns in an electrolyzed water mode, comprising a culture pond or a group of culture ponds, a microfilter and a water electrolysis device connected to the culture pond or the group of culture ponds. The water electrolysis device is directly connected to the culture pond or the group of culture ponds or installed downstream of the microfilter; the culture pond or the group of culture ponds is provided with multiple water inlets, which are connected to the water outlet pipe of the water electrolysis device.

[0008] Preferably, in addition to the components mentioned above, the aquaculture pond or group of aquaculture ponds is also equipped with electrical wires, air pipes, heating pipes, and an automatic feeding device and aeration discs. These are all standard accessories for aquaculture ponds and can be configured according to existing technology.

[0009] Preferably, this utility model adopts a diaphragm electrolysis oxidation water purification system. The main electrolysis equipment is an IEM diaphragm electrolysis water treatment unit. The device is cylindrical, with a cylindrical cathode, diaphragm and cylindrical anode installed sequentially from the inside to the outside. The equipment is placed on a suitable-sized environmentally friendly PP material and is filled with circulating aquaculture seawater.

[0010] The device of this utility model includes two forms. One form consists of a single aquaculture pond with one microfilter at each of the two diagonal positions and a water electrolysis device at the other corner. The number of aquaculture ponds after filling with water is more than 10, and they are connected to the outlet pipe of the water electrolysis device via a main pipe. Preferably, the water inlet of the water electrolysis device is connected to a water pump, and the pump's hourly water extraction capacity is 1 / 10 of the hourly water treatment capacity of a single microfilter, while the hourly water treatment capacity of the microfilter is 1 / 100 of the water volume contained in the aquaculture pond.

[0011] Another form is a group of aquaculture ponds, consisting of multiple ponds connected to a microfiltration unit via a single drainage pipe. After the microfiltration unit's outlet, the water splits into two pipes, A and B. Pipe A has a higher flow rate than pipe B. Water from pipe B passes through the water electrolysis equipment and then reconnects to pipe A, forming a single, circulated system that is then injected back into the aquaculture ponds.

[0012] Preferably, the unit water processing capacity of the microfilter is 1 / 50 of the water volume contained in the aquaculture pond group; pipe A accounts for 90% of the microfilter's outlet water flow, and pipe B accounts for 10% of the outlet water flow.

[0013] The second aspect of this utility model provides a method for factory-scale recirculating aquaculture of king prawns using an electrolytic water mode, comprising the following steps: culture begins in June, with water temperature required to be 25℃-30℃, salinity above 15 degrees, maintaining seawater ammonia nitrogen and vitamin levels not exceeding 0.15 mg / L, maintaining seawater pH at 7.8-9.0, and dissolved oxygen averaging 8.2 mg / L; feeding twice daily, 40% in the morning and 60% in the evening; feeding approximately 8% of the total biomass in the early stage, approximately 5% in the middle stage, and approximately 3% in the later stage; after approximately 100 days, the cultured king prawns can reach 40 individuals per kilogram.

[0014] Preferably, the stocking density of shrimp larvae in the water is 100,000 larvae / 1000m² throughout the entire aquaculture process. 3 When using a series of aquaculture ponds, the calculation is based on the water capacity of a single pond; the entire aquaculture process is controlled by Cl. - The concentration is below 0.07 mol / L.

[0015] The technical effects of this utility model are as follows:

[0016] This invention provides a method for reducing energy consumption, eliminating pathogens and pathogens, and ensuring the normal growth of cultured organisms in the context of industrialized recirculating aquaculture using water electrolysis equipment, while avoiding environmental pollution from wastewater discharge.

[0017] This invention replaces large-scale equipment such as protein separators, biochemical treatment tanks, and ultraviolet sterilization systems. When used in conjunction with a microfiltration machine, it significantly reduces the floor space required for water treatment facilities. The chlorine compounds produced by water electrolysis kill pathogenic microorganisms in the water, ensuring the healthy growth of aquaculture organisms. This reduces costs and increases profits. Attached Figure Description

[0018] Figure 1 A schematic diagram of the apparatus for factory-scale recirculating aquaculture of king prawns in the water electrolysis mode of Example 1 is shown.

[0019] Figure 2 A schematic diagram of the apparatus for factory-scale recirculating aquaculture of king prawns in the electrolysis mode of Example 2 is shown. Detailed Implementation

[0020] The following embodiments and experimental examples further illustrate the present invention and should not be construed as limiting the present invention. The embodiments do not include detailed descriptions of conventional methods and structures, such methods are well known to those skilled in the art and have been described in numerous publications.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as are familiar to those skilled in the art. Furthermore, any methods and structures similar to or equivalent to those described herein may be applied to this invention, and the preferred embodiments and materials described in the specific implementation are for illustrative purposes only.

[0022] Example 1

[0023] according to Figure 1 In a recirculating aquaculture system for king prawns at a breeding base in Ninghai, Zhejiang Province, a rectangular culture pond (10) measuring 8 meters * 100 meters * 1.2 meters and holding 960 tons of water is used. A microfiltration unit (11) with a processing capacity of 10 tons per hour is placed in one corner of the pond, and another is placed at the opposite corner to ensure water renewal and circulation. A water electrolysis unit (12) (water treatment equipment) is placed in one corner, connected to a 220V power supply and a water pump (13) with a pumping capacity of 1 ton per hour. Water pumped into the electrolysis unit flows through pipes (14) and is evenly injected into the culture pond. There are at least 10 water inlets (15). Throughout the breeding process, the Cl- concentration in the water is maintained below 0.07 mol / L. In addition, electrical wires, air pipes, heating pipes (16) are laid in the culture pond, and an automatic feeding device, aeration discs (17), and heating pipes are installed.

[0024] 100,000 king prawn larvae are stocked, with cultivation commencing in June. The required water temperature is 25℃-30℃, salinity above 15%, ammonia nitrogen and vitamin C levels not exceeding 0.15 mg / L, and the seawater pH maintained at 7.8-9.0 with an average dissolved oxygen level of 8.2 mg / L. Feed twice daily: 40% in the morning and 60% in the evening. Initially, feed approximately 8% of the total biomass; in the middle stage, approximately 5%; and in the later stage, approximately 3%. After approximately 100 days, the king prawns will reach a size of 40 per jin (approximately 0.5 catties), meeting market size.

[0025] Example 2

[0026] according to Figure 2In a recirculating aquaculture system for king prawns at a breeding base in Ninghai, Zhejiang Province, aquaculture pond group 20 is used. The group consists of multiple circular galvanized steel canvas ponds 21, each measuring 6 meters x 1.2 meters. There are two rows of 15 ponds each, totaling 30 ponds, holding approximately 1000 tons of water. A drainage pipe 22 connects each pond to a microfilter 23 with a capacity of 20 tons per hour. After the microfilter, two pipes branch off: pipe A 24 handles 90% of the water flow, while pipe B 25 handles 10%. Water from pipe B passes through a water electrolysis device 26 (water treatment equipment) before reconnecting to pipe A 24, forming a single circulating pipeline that flows back into the ponds. The electrolysis device (water treatment equipment) operates at 220V, ensuring the Cl- concentration in the water remains below 0.07 mol / L throughout the entire breeding process. In addition, electrical wires, air pipes, heating pipes, etc. are laid inside the circular galvanized sheet canvas pool, and automatic feeding devices, aeration discs, heating pipes, etc. are installed.

[0027] After the initial rearing stage, each canvas pond can stock 5,000-10,000 shrimp larvae. Cultivation begins in June. The required water temperature is 25℃-30℃, salinity is above 15%, ammonia nitrogen and vitamin D levels should not exceed 0.15 mg / L, the seawater pH should be maintained at 7.8-9.0, and dissolved oxygen should average 8.2 mg / L. Feed twice daily: 40% in the morning and 60% in the evening. Initially, feed approximately 8% of the total biomass; in the middle stage, approximately 5%; and in the later stage, approximately 3%. After about 100 days, the cultivated shrimp will reach a size of 40 shrimp per kilogram, meeting market size.

[0028] The undescribed parts of this utility model are the same as or implemented using existing technology. The applicant declares that this utility model is illustrated through the above embodiments, but it is not limited to the above detailed methods, meaning that this utility model does not necessarily rely on the above detailed methods for implementation. Those skilled in the art should understand that any improvements to this utility model, equivalent substitutions of raw materials, additions of auxiliary components, and selection of specific methods, etc., all fall within the protection and disclosure scope of this utility model.

Claims

1. A device for factory-scale recirculating aquaculture of king prawns using an electrolysis water mode, characterized in that, Includes aquaculture ponds or aquaculture pond group, and a microfiltration unit and water electrolysis equipment connected to the aquaculture ponds or aquaculture pond group. The water electrolysis equipment is directly connected to the aquaculture pond or aquaculture pond group or installed downstream of the microfilter; the aquaculture pond or aquaculture pond group is provided with multiple water inlets, which are connected to the water outlet pipe of the water electrolysis equipment.

2. The apparatus for factory-scale recirculating aquaculture of king prawns under the electrolysis water mode according to claim 1, characterized in that, The breeding pond or group of breeding ponds is also equipped with electrical wires, air pipes, heating pipes, and automatic feeding devices and aeration discs.

3. The apparatus for factory-scale recirculating aquaculture of king prawns under the electrolysis water mode according to claim 1, characterized in that, The water electrolysis equipment is mainly an IEM diaphragm electrolysis water treatment unit. The device is cylindrical, with a cylindrical cathode, diaphragm and cylindrical anode installed sequentially from the inside to the outside.

4. The apparatus for factory-scale recirculating aquaculture of king prawns under the electrolysis water mode according to claim 1, characterized in that, The aquaculture pond is a single aquaculture pond, with a microfiltration machine installed at each of the two diagonal positions, and the water electrolysis equipment is located at the other corner; the aquaculture pond has more than 10 water inlets, which are connected to the water outlet pipe of the water electrolysis equipment through a main pipe.

5. The apparatus for factory-scale recirculating aquaculture of king prawns under the electrolysis water mode according to claim 3, characterized in that, The water electrolysis equipment is connected to a water pump at its water inlet. The pump's hourly water output is 1 / 10 of the hourly water treatment capacity of a single microfiltration unit. The microfiltration unit's hourly water treatment capacity is 1 / 100 of the water volume contained in the aquaculture pond.

6. The apparatus for factory-scale recirculating aquaculture of king prawns under the electrolysis water mode according to claim 1, characterized in that, The aquaculture pond group consists of multiple aquaculture ponds, and each aquaculture pond is connected to a microfiltration machine through a drainage pipe. After the outlet of the microfiltration machine, it splits into two pipes, A and B. The water flow rate of pipe A is greater than that of pipe B. The water flow of pipe B passes through the water electrolysis equipment and then connects to pipe A to form a single pipe, which is then circulated into the aquaculture pond.

7. The apparatus for factory-scale recirculating aquaculture of king prawns under the electrolysis water mode according to claim 6, characterized in that, The microfiltration unit can process 1 / 50 of the water volume contained in the aquaculture pond group. Pipe A accounts for 90% of the microfiltration machine's outlet water flow, while pipe B accounts for 10% of the outlet water flow.

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