CN216377824U - Intensive industrial recirculating aquaculture system based on protecting the ecological environment - Google Patents

Abstract

The present application relates to an intensive industrialized circulating aquaculture system based on protecting the ecological environment, and belongs to the field of ecological environment protection. The system includes a solid-liquid separation device, a protein separation device, an ammonia nitrogen separation device, an ultraviolet treatment device, a new type of purification device, an ozone generator, a circulating water aquaculture tank, an oxygenation device, a control system, a treatment tank, biomass, and a water collection tank; protein The separation device includes a burst gas pump, a burst gas generator, and a burst gas pool; the oxygenation device includes an oxygen booster pool, a liquid oxygen storage tank, a liquid oxygen control valve, and a tail gas pipeline. Compared with the prior art, the beneficial effects of the present application are: high treatment efficiency of aquaculture tail water, high dissolved oxygen content in circulating water, low suspended particulate matter content, and low ammonia nitrogen content. The application can reduce the cost of tail water treatment and improve the water quality and efficiency of tail water treatment, and is a novel aquaculture technology with considerable market and application prospects.

Description

Intensive industrial recirculating aquaculture system based on protecting the ecological environment

technical field

The present application relates to an intensive industrialized circulating aquaculture system based on protecting the ecological environment, which belongs to the field of ecological environment protection.

Background technique

Aquaculture, through artificially controlled breeding, cultivation and harvesting of aquatic animals and plants, has become the main force driving the rapid and stable development of my country's fishery. In 2019, the total output of aquaculture in my country exceeded 50 million tons, accounting for more than 60% of the total aquaculture in the world (Wang Ying, Lin Xubin, Chen Lianfei, et al. Development status and application suggestions of aquaculture equipment in Guangdong Province [J]. Modern Agricultural Equipment , 2021, 42(04):86-89).

Based on the utilization rate of water resources, aquaculture modes can be divided into extensive, semi-extensive and intensive aquaculture. The first two breeding modes rely more on land resources, water resources and natural environment resources, and cause extreme pollution of aquaculture water, which is not in line with the scientific concept of sustainable development. Recirculating aquaculture is a technology that uses physical filtration, biological filtration, disinfection, oxygenation and other treatments to re-enter the treated water into the aquaculture pond for recycling. However, the existing circulating aquaculture has the problems of low treatment efficiency of aquaculture tail water, low dissolved oxygen content in circulating water, high suspended particulate matter content, and high ammonia nitrogen content.

Therefore, there is an urgent need for an aquaculture system with high treatment efficiency of aquaculture tail water, high dissolved oxygen content in circulating water, low suspended particulate matter content, and low ammonia nitrogen content.

Utility model content

The purpose of this application is to provide an intensive industrial recirculating aquaculture system based on protecting the ecological environment, so as to solve many problems faced by traditional aquaculture systems. The intensive industrial circulating aquaculture system based on the protection of the ecological environment of the present application has the advantages of high aquaculture tail water treatment efficiency, high dissolved oxygen content in circulating water, low suspended particulate matter content, and low ammonia nitrogen content.

In order to achieve the above purpose, the application provides the following technical solutions:

An intensive industrial circulating aquaculture system based on protecting the ecological environment is characterized in that it includes a solid-liquid separation device, a protein separation device, an ammonia nitrogen separation device, an ultraviolet treatment device, a new type of purification device, an ozone generator, a circulating water aquaculture pond, and an oxygen-enhancing device. Device, control system, treatment tank, biomass, water collection tank;

The protein separation device comprises a blast gas pump, a blast gas generator, and a blast gas pool, and the jet port of the blast gas generator is located at the bottom of the blast gas pool; the blast gas pump drives the blast gas generator to operate to generate microbubbles;

The oxygenation device includes an oxygenation tank, a liquid oxygen storage tank, a liquid oxygen control valve, and a tail gas pipeline; the liquid oxygen enters the oxygenation tank from the liquid oxygen storage tank through the liquid oxygen control valve, and the culture that enters the oxygenation tank is very important. The tail water is oxygenated; the oxygen that is not integrated into the tail water enters the gas collecting tank through the tail gas pipeline;

The tail gas pipeline is connected with the treatment tank through the gas collection tank and the oxygen control valve in turn; the oxygen in the gas collection tank is used to provide heat energy for the treatment tank;

The ammonia nitrogen separation device includes 6 to 8 rows of vertically placed bio-based carriers, on which nitrifying bacteria are cultivated;

The control system includes a control host and a control panel;

The circulating water culture tank produces the first sediment, the solid-liquid separation device produces the second sediment, and the protein separation device produces floating impurities;

The first sediment, the second sediment and the floating impurities form the discharge;

The effluent and biomass are pretreated to obtain an expanded product;

The puffed product enters the treatment tank to undergo a physical and chemical reaction and generate adsorption particles;

The adsorbent particles are crushed and passed through a 0.15mm sieve, and the crushed and sieved adsorbent particles are used as the adsorption material of the new purification device.

Preferably, the biomass comprises 50% corn stover, 30% wheat stover, and 20% cottonseed meal.

Preferably, the pretreatment includes the following steps: step 1, cleaning the biomass to remove impurities, pulverizing and passing through a 2.5mm sieve; step 2, taking 5-8 parts of the treated biomass, and taking 2-3 parts of the biomass The discharged material is mixed evenly, and is extruded and extruded by a screw extruder to obtain an extruded product; the screw speed of the extruded extruder is 220-260 r/min, the working temperature is 160-180 ° C, and the indoor pressure is 2 ～3MPa, the treatment time is 30～40s, the diameter of the die hole is 2～4mm, and the pressure is quickly relieved within 0.5s.

Preferably, the puffed product enters the treatment tank to undergo a physical and chemical reaction, and the conditions for the physical and chemical reaction are: an anaerobic environment, an operating temperature of 420-460°C, and an operating time of 20-30 minutes.

Preferably, in step 2 of the pretreatment, take 6 parts of the treated biomass and 2 parts of the discharge, mix them evenly, and extrude them with a screw extruder to obtain an extruded product; The screw speed of the extrusion and puffing is 240r/min, the working temperature is 170°C, the indoor pressure is 2.5MPa, the processing time is 38s, the diameter of the die hole is 3mm, and the pressure is quickly relieved within 0.5s.

Preferably, the puffed product enters the treatment tank and undergoes a physical and chemical reaction, and the conditions for the physical and chemical reaction are: an anaerobic environment, an operating temperature of 450° C., and an operating time of 22 minutes.

Preferably, koi are cultured in the circulating water culture pond.

The application also provides a working method of an intensive industrialized circulating aquaculture system based on protecting the ecological environment: the aquaculture tail water in the circulating water aquaculture pond passes through the solid-liquid separation device, the protein separation device, the ammonia nitrogen separation device, the ultraviolet treatment device, the The new purification device and ozone generation device enter the oxygenation tank; the oxygenation device oxygenates the treated aquaculture tail water; the oxygenated water body enters the collection tank, and returns to the circulating water aquaculture tank after passing the test. And then realize a culture tail water cycle.

The intensive industrialized recirculating aquaculture system based on protecting the ecological environment provided by the present application has the following advantages compared with the prior art:

1. In the present application, an extruded product is obtained by pretreating the effluent and biomass; the extruded product is subjected to a physicochemical reaction to generate adsorption particles, which are used to prepare an adsorption material for a new type of purification device. In the present application, while cleaning the tail water of aquaculture, the feed residues, feces and other substances at the bottom of the circulating water aquaculture pond and biomass are processed and processed, so as to realize the carbonization and recycling of organic matter, so as to turn waste into treasure and realize the recycling of resources. .

2. The present application recovers the oxygen that is not incorporated into the tail water in the oxygenation device, which avoids the danger and energy waste caused by the direct efflux of oxygen, and can also provide thermal energy for the treatment tank, reduce production energy consumption, and reduce operating costs.

3. The recirculating aquaculture system in the application can shorten the breeding cycle; compared with the traditional breeding mode, the controllability of the breeding environment in the application is enhanced, which can avoid conflicts with the natural environment breeding time to market, and flexibly adjust the time to market, thereby improving the economy. benefit.

4. The ultraviolet treatment device and the ozone generating device in this application play the role of killing pathogenic bacteria in the tail water; the solid-liquid separation device filters the solid particles in the culture tail water with particles larger than 400 microns; the nitrifying bacteria on the bio-based carrier can remove the culture tail. Excess ammonia nitrogen and nitrosamine in water.

5. The pretreatment in this application is a very important step, which can kill harmful substances in the biomass, and at the same time use high temperature and high pressure to instantly relieve pressure, open up the internal channels of the tissue, form pores of various shapes and sizes, and obtain loose, Porous structure, expand the surface area and improve the adsorption performance, further remove ammonia nitrogen phosphorus and other substances in the tail water, and reduce the ammonia nitrogen and phosphorus content in the tail water.

6. The culture tail water after the circulation in this application is crystal clear, wherein the ammonia nitrogen content is lower than 0.1mg/L, the nitrite content is lower than 0.05mg/L, the suspended particulate matter is lower than 1.6mg/L, and the dissolved oxygen content is high At 10 mg/L, the pH value is between 6.5 and 7.3, and the water quality index meets the requirements; this application is a new aquaculture technology with considerable market and application prospects.

Description of drawings

FIG. 1 is a schematic diagram of the overall structure of the application.

FIG. 2 is a schematic diagram of the protein separation device in the present application.

Fig. 3 is the ammonia nitrogen separation device in the application.

In the figure, 11-Solid-liquid separation device; 12-Protein separation device; 121-Burst gas pump; 122-Burst gas generator; 123-Burst gas tank; 13-Ammonia nitrogen separation device; 131-Bio-based carrier; 132-Nitrifying bacteria ;21-ultraviolet treatment device;22-new purification device;23-ozone generating device;4-circulating water culture tank;5-aeration device;50-aeration tank;51-liquid oxygen storage tank;52-liquid oxygen control valve; 53-exhaust gas pipeline; 54-gas collection tank; 55-oxygen control valve; 6-control system; 61-computer; 62-control panel; 7-treatment tank; 71-first sediment; 72-second sediment 73-floating impurities; 8-biomass; 9-sump.

Detailed ways

As shown in Figures 1-3, the intensive industrial recirculating aquaculture system based on protecting the ecological environment includes solid-liquid separation device 11, protein separation device 12, ammonia nitrogen separation device 13, ultraviolet treatment device 21, new purification device 22, ozone generation device Device 23, circulating water culture tank 4, oxygenation device 5, control system 6, treatment tank 7, biomass 8, water collection tank 9;

The protein separation device 12 includes a violent gas pump 121, a violent gas generator 122, and a violent gas pool 123. The jet port of the violent gas generator 122 is located at the bottom of the violent gas pool 123; microbubbles;

The oxygenation device 5 includes an oxygenation tank 50, a liquid oxygen storage tank 51, a liquid oxygen control valve 52, and a tail gas pipeline 53; the liquid oxygen enters the oxygenation tank 50 from the liquid oxygen storage tank 51 through the liquid oxygen control valve 52, Oxygenation is carried out to the culturing tail water entering the aeration tank 50; wherein the oxygen that is not integrated into the tail water enters the gas collecting tank 54 through the tail gas pipeline 53;

The tail gas pipeline 53 is connected with the treatment tank 7 through the gas collection tank 54 and the oxygen control valve 55 in turn; the oxygen in the gas collection tank 54 is used to provide thermal energy for the treatment tank 7;

The ammonia nitrogen separation device 13 includes 6 to 8 rows of vertically placed bio-based carriers 131 on which nitrifying bacteria 132 are cultured;

The control system 6 includes a control host 61 and a control panel 62;

The circulating water culture tank 4 produces a first sediment 71, the solid-liquid separation device 11 produces a second sediment 72, and the protein separation device 12 produces floating impurities 73;

The first sediment 71, the second sediment 72, and the floating impurities 73 constitute the discharge;

The effluent and biomass 8 are pretreated to obtain an expanded product;

The puffed product enters the treatment tank 7 to undergo a physical and chemical reaction and generate adsorption particles;

The adsorbent particles are pulverized and passed through a 0.15mm sieve, and the pulverized and sieved adsorbent particles are used as the adsorption material of the novel purification device 22 .

The working method of the intensive industrial recirculating aquaculture system based on protecting the ecological environment: the aquaculture tail water in the recirculating aquaculture tank 4 passes through the solid-liquid separation device 11 , the protein separation device 12 , the ammonia nitrogen separation device 13 and the ultraviolet treatment device 21 in sequence. , the new purification device 22, the ozone generating device 23, enter the oxygenation tank 50; the oxygenation device 5 oxygenates the treated aquaculture tail water; the oxygenated water body enters the sump 9, and returns after passing the test Enter the circulating water culture tank 4, and then realize a culture tail water cycle.

Preferably, the biomass 8 includes 50% corn stover, 30% wheat stover, and 20% cottonseed meal.

Preferably, the pretreatment includes the following steps: step 1, cleaning the biomass 8 to remove impurities, pulverizing and passing through a 2.5mm sieve; step 2, taking 5-8 parts of the treated biomass 8, and taking 2-3 parts The discharged material is mixed evenly, and is extruded and extruded by a screw extruder to obtain an extruded product; the screw speed of the extruded extruder is 220-260 r/min, the working temperature is 160-180 ° C, and the indoor pressure is The pressure is 2-3MPa, the processing time is 30-40s, the diameter of the die hole is 2-4mm, and the pressure is quickly relieved within 0.5s.

Preferably, the puffed product enters the treatment tank 7 and undergoes a physical and chemical reaction, and the conditions for the physical and chemical reaction are: an anaerobic environment, an operating temperature of 420-460° C., and an operating time of 20-30 minutes.

Preferably, in step 2 of the pretreatment, take 6 parts of the treated biomass 8 and 2 parts of the discharge, mix them evenly, and extrude them with a screw extruder to obtain an extruded product The screw speed of the extrusion and puffing is 240r/min, the working temperature is 170℃, the indoor pressure is 2.5MPa, the processing time is 38s, the diameter of the die hole is 3mm, and the pressure is quickly relieved within 0.5s.

Preferably, the puffed product enters the treatment tank 7 and undergoes a physical and chemical reaction, and the conditions for the physical and chemical reaction are: an anaerobic environment, an operating temperature of 450° C., and an operating time of 22 minutes.

Preferably, koi are cultured in the circulating water culture pond 4 .

The following are several specific embodiments of the present application to further illustrate the present application, but the present application is not limited to these embodiments.

Example 1

An intensive industrial circulating aquaculture system based on protecting the ecological environment, including a solid-liquid separation device 11, a protein separation device 12, an ammonia nitrogen separation device 13, an ultraviolet treatment device 21, a new purification device 22, an ozone generator 23, and a circulating water aquaculture tank 4 , oxygenation device 5, control system 6, treatment tank 7, biomass 8, water collection tank 9;

The protein separation device 12 includes a violent gas pump 121, a violent gas generator 122, and a violent gas pool 123. The jet port of the violent gas generator 122 is located at the bottom of the violent gas pool 123; microbubbles;

The oxygenation device 5 includes an oxygenation tank 50, a liquid oxygen storage tank 51, a liquid oxygen control valve 52, and a tail gas pipeline 53; the liquid oxygen enters the oxygenation tank 50 from the liquid oxygen storage tank 51 through the liquid oxygen control valve 52, Oxygenation is carried out to the culturing tail water entering the aeration tank 50; wherein the oxygen that is not integrated into the tail water enters the gas collecting tank 54 through the tail gas pipeline 53;

The tail gas pipeline 53 is connected with the treatment tank 7 through the gas collection tank 54 and the oxygen control valve 55 in turn; the oxygen in the gas collection tank 54 is used to provide thermal energy for the treatment tank 7;

The ammonia nitrogen separation device 13 includes 6 to 8 rows of vertically placed bio-based carriers 131 on which nitrifying bacteria 132 are cultured;

The control system 6 includes a control host 61 and a control panel 62;

The circulating water culture tank 4 produces a first sediment 71, the solid-liquid separation device 11 produces a second sediment 72, and the protein separation device 12 produces floating impurities 73;

The first sediment 71, the second sediment 72, and the floating impurities 73 constitute the discharge;

The effluent and biomass 8 are pretreated to obtain an expanded product; the pretreatment includes the following steps: Step 1, clean the biomass 8 to remove impurities, pulverize and pass through a 2.5mm sieve; Step 2, take 5-8 8. Take 2 to 3 parts of the effluent, mix evenly, and extrude it with a screw extruder to obtain an extruded product; the screw speed of the extruded extruding is 220 r/min , the working temperature is 160°C, the indoor pressure is 2MPa, the processing time is 40s, the diameter of the die hole is 2mm, and the pressure is quickly relieved within 0.5s;

The puffed product enters the treatment tank 7 to undergo a physical and chemical reaction and generate adsorption particles; the conditions of the physical and chemical reaction are: an anaerobic environment, the operating temperature is 420°C, and the operating time is 30 minutes;

The adsorbent particles are pulverized and passed through a 0.15mm sieve, and the pulverized and sieved adsorbent particles are used as the adsorption material of the novel purification device 22 .

Example 2

An intensive industrial circulating aquaculture system based on protecting the ecological environment, including a solid-liquid separation device 11, a protein separation device 12, an ammonia nitrogen separation device 13, an ultraviolet treatment device 21, a new purification device 22, an ozone generator 23, and a circulating water aquaculture tank 4 , oxygenation device 5, control system 6, treatment tank 7, biomass 8, water collection tank 9;

The protein separation device 12 includes a violent gas pump 121, a violent gas generator 122, and a violent gas pool 123. The jet port of the violent gas generator 122 is located at the bottom of the violent gas pool 123; microbubbles;

The oxygenation device 5 includes an oxygenation tank 50, a liquid oxygen storage tank 51, a liquid oxygen control valve 52, and a tail gas pipeline 53; the liquid oxygen enters the oxygenation tank 50 from the liquid oxygen storage tank 51 through the liquid oxygen control valve 52, Oxygenation is carried out to the culturing tail water entering the aeration tank 50; wherein the oxygen that is not integrated into the tail water enters the gas collecting tank 54 through the tail gas pipeline 53;

The tail gas pipeline 53 is connected with the treatment tank 7 through the gas collection tank 54 and the oxygen control valve 55 in turn; the oxygen in the gas collection tank 54 is used to provide thermal energy for the treatment tank 7;

The ammonia nitrogen separation device 13 includes 6 to 8 rows of vertically placed bio-based carriers 131 on which nitrifying bacteria 132 are cultured;

The control system 6 includes a control host 61 and a control panel 62;

The circulating water culture tank 4 produces a first sediment 71, the solid-liquid separation device 11 produces a second sediment 72, and the protein separation device 12 produces floating impurities 73;

The first sediment 71, the second sediment 72, and the floating impurities 73 constitute the discharge;

The effluent and biomass 8 are pretreated to obtain an expanded product; the pretreatment includes the following steps: Step 1, clean the biomass 8 to remove impurities, pulverize and pass through a 2.5mm sieve; Step 2, take 5-8 8, take 2 to 3 parts of the effluent, mix them evenly, and extrude it with a screw extruder to obtain an extruded product; the screw speed of the extruded extruding is 240r/min , the working temperature is 170°C, the indoor pressure is 2.5MPa, the processing time is 38s, the diameter of the die hole is 3mm, and the pressure is quickly relieved within 0.5s;

The puffed product enters the treatment tank 7 to undergo a physical and chemical reaction and generate adsorption particles; the conditions of the physical and chemical reaction are: an anaerobic environment, the operating temperature is 450°C, and the operating time is 22 minutes;

The adsorbent particles are pulverized and passed through a 0.15mm sieve, and the pulverized and sieved adsorbent particles are used as the adsorption material of the novel purification device 22 .

The above are only the preferred specific embodiments of the present application, but the protection scope of the present application is not limited to this. Substitutions should be covered within the protection scope of this application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims (2)

1. Intensive industrial recirculating aquaculture system based on environmental protection, its characterized in that: comprises a solid-liquid separation device (11), a protein separation device (12), an ammonia nitrogen separation device (13), an ultraviolet treatment device (21), a novel purification device (22), an ozone generation device (23), a circulating water culture pond (4), an oxygenation device (5), a control system (6), a treatment pond (7), biomass (8) and a water collecting pond (9);

the protein separation device (12) comprises an aeration pump (121), an aeration generator (122) and an aeration tank (123), wherein a jet opening of the aeration generator (122) is positioned at the bottom of the aeration tank (123); the aeration pump (121) drives the aeration generator (122) to operate to generate micro bubbles;

the oxygenation device (5) comprises an oxygenation pool (50), a liquid oxygen storage tank (51), a liquid oxygen control valve (52) and a tail gas pipeline (53); liquid oxygen enters the oxygen increasing pool (50) from a liquid oxygen storage tank (51) through a liquid oxygen control valve (52) to increase oxygen in the culture tail water entering the oxygen increasing pool (50); wherein oxygen which is not melted into the tail water enters a gas collecting tank (54) through a tail gas pipeline (53);

the tail gas pipeline (53) is connected with the treatment pool (7) through a gas collection tank (54) and an oxygen control valve (55) in sequence; the oxygen in the gas collecting tank (54) is used for providing heat energy for the treatment tank (7);

the ammonia nitrogen separation device (13) comprises 6-8 rows of vertically placed bio-based carriers (131), and nitrobacteria (132) are cultured on the bio-based carriers (131);

the control system (6) comprises a control host (61) and a control panel (62);

the recirculating aquaculture pond (4) generates a first precipitate (71), the solid-liquid separation device (11) generates a second precipitate (72), and the protein separation device (12) generates floating impurities (73);

the first precipitate (71), the second precipitate (72) and the floating impurities (73) form a discharge;

the effluent and biomass (8) are pretreated to obtain a puffed product;

the puffed product enters a treatment tank (7) to carry out physical and chemical reaction and generate adsorption granules;

the adsorption granules are crushed and sieved by a 0.15mm sieve sheet, and the crushed and sieved adsorption granules are used as an adsorption material of a novel purification device (22).

2. The eco-friendly intensive industrial recirculating aquaculture system of claim 1, wherein: the cyprinus carpio is cultured in the circulating water culture pond (4).

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