CN201733730U - Grouper factory circulating water aquaculture device - Google Patents

Abstract

A grouper industrialized circulating aquaculture device, the device includes at least four nano-fish tanks for aquaculture, a water purification device mainly composed of a backwater pool pump, a filter and a disinfection device, and the backwater pool water pump is at least It is arranged between the nano fish tank, the microporous filter and a sand filter tank, and the sand filter tank is followed by a biological filter and a protein separator in sequence to form the filter; in the nano fish tank, the back filter Circulating water pipes are respectively installed among the pool water pump, filter and disinfection device; the water purification device is equipped with dissolved oxygen feeding equipment, and the equipment is connected to the protein separator to oxygenate the water purification device; it has The structure is simple, the occupied area is small, the cost is low, the circulating water quality treatment effect is good, and it can meet the requirements of industrial aquaculture.

Description

Grouper industrialized recirculating aquaculture device

technical field

The utility model relates to a grouper aquaculture device adopting a novel water quality purification system, in particular to a grouper industrial circulating aquaculture device, which belongs to the technical field of aquaculture. the

Background technique

The development of aquaculture is inseparable from the rapid development of today's society. Traditional aquaculture mainly relies on a large-scale aquaculture pond, which consumes a lot of water and waste water, so it not only consumes a lot of energy, but also has a great impact on the environment. Usually, a large amount of excrement and residual bait produced in the aquaculture process It will accumulate in the aquaculture pond, and then cause the water quality in the aquaculture pond to gradually deteriorate, which will lead to lesions of the cultured plants and reduce the output and quality of aquaculture. the

In order to solve the disadvantages of the above-mentioned traditional aquaculture methods, some farmers also adopt some wastewater treatment technologies and apply them in modern aquaculture to ensure good water quality in the aquaculture ponds. However, because the selected wastewater treatment methods are not suitable for the circulating water treatment of aquaculture ponds, some structures are too complicated, some treatment effects are not good, and some costs are too high. the

Contents of the invention

The purpose of the utility model is to overcome the deficiencies in the prior art, and provide a grouper industrial circulating aquaculture with simple structure, small occupied area, low cost, good circulating water quality treatment effect, and meeting the requirements of industrial aquaculture. device. the

The purpose of this utility model is accomplished through the following technical solutions. The device includes at least four nano-fish tanks for aquaculture, a water purification device mainly composed of a water pump, a filter and a disinfection device. The water pump is at least provided with Between the nano fish tank, the microporous filter and a sand filter tank, after the sand filter tank, a biofilter and a protein separator are successively connected to form the filter; in the nano fish tank, the water pump, the filter Circulating water pipes are installed between the device and the disinfection device. the

The water purification device is equipped with dissolved oxygen feeding equipment, and the equipment is connected to the protein separator to charge the water purification device with oxygen. the

The water purification device is equipped with an ozone generator and an automatic temperature regulation unit with a boiler, and they are respectively connected to the water purification device through circulating water pipes. the

The described water purification device is connected to the water outlet provided at the central bottom of the aquaculture nano fish tank through a return water regulating tank, and the return water purified by the described water quality purification device passes through the tank wall of the nano fish tank along the circumferential tangential direction. The circulating water pipe ports set in the direction are connected. the

The water quality purification device is connected with the water quality online automatic monitoring and control device through a data line. the

The water quality index of the utility model after being processed by the water quality purification device can meet the national fishery water quality standard. the

Industrialized aquaculture is one of the concrete manifestations of modern facility fishery. It is the most advanced farming model today. It has the characteristics of small footprint, concentrated production, high output and good benefits. It is a realistic choice for modern fishery production. the

The utility model mainly regulates three aspects of aquaculture water: 1. water quality, 2. dissolved oxygen, and 3. temperature. These three aspects are indispensable, forming a complete and excellent device. Its functions mainly include: (1) Equipped with a high-efficiency filter tank to quickly remove suspended solids and metal ions in the water. (2) Assemble a protein separation device to remove oil and organic matter in the water. (3) Through the use of ozone or ultraviolet disinfection, the virus and bacteria in the water are completely killed, the impact and damage of the virus on the fish body are avoided, the feeding rate of the fish body and the hatching rate of the seed are improved, and the amount of water change and the hatching rate of the seed are improved. The number of water changes greatly saves labor and energy, and reduces costs. (4) Use biofilter to reduce the content of ammonia nitrogen and keep the water quality in a stable state for a long time through the rational use of nitrifying bacteria and denitrifying bacteria. (5) Use pure oxygen to add oxygen to the water through the dissolved oxygen input equipment to increase the breeding density and quality. The dissolved oxygen device can be automatically adjusted according to the set dissolved oxygen value to achieve a reasonable dissolved oxygen value, and the oxygen utilization effect reaches 100%. . (6) The automatic temperature adjustment unit adopts an automatic heat exchanger with stainless steel plate as the catalyst, which avoids the negative impact of toxic metal ions on water quality caused by traditional steel pipe heat exchange, and at the same time enables the aquaculture industry to achieve more than one season, and the heat exchanger can be used according to The water temperature needs to be set to automatically adjust the water temperature, and will not harm the seedlings due to the traditional slow heating rate and hot and cold water temperature. (7) Use the water quality online automatic monitoring and control device to dynamically monitor and improve various water quality indicators that affect breeding and breeding, and can alarm the abnormal fluctuations of various water quality, and can also store various data for statistics, which is beneficial to The relationship between water quality and growth in the production process and growth process was compared and analyzed. (8) Using electromechanical automation equipment to automatically operate various equipment, avoiding mistakes caused by manual operation and increasing work efficiency. It has the characteristics of simple structure, small occupied area, low cost, good circulating water quality treatment effect, and can meet the requirements of industrialized aquaculture. the

Description of drawings

Fig. 1 is a schematic diagram of the construction principle of the device of the present invention. the

Fig. 2 is a schematic diagram of the water purification device of the present invention. the

Detailed ways

The utility model will be described in detail below in conjunction with specific embodiments and accompanying drawings: shown in accompanying drawing 1, the utility model comprises the nano fish tank 1 that at least is equipped with four aquaculture, mainly by water pump 5, filter device 9 and disinfection The water purification device 2 formed by the device 6, the water pump is at least arranged between the nano fish tank 1, the microporous filter 4 and a sand filter tank 3, and the sand filter tank 3 is followed by a biological filter in sequence 7 and protein separator 8 and constitute described filter device 9; Between this nanometer fish tank 1, water pump 5, filter device 9 and disinfection device 6, circulating water pipeline 10 is equipped with respectively. the

The water purification device 2 is equipped with a dissolved oxygen feeding device 11, and the device is connected to the protein separator 8 to charge the water purification device 2 with oxygen. the

Described water purification device 2 links to each other with the water outlet that the central bottom of aquaculture nano fish tank 1 is provided with through a return water adjustment pool 15, and the return water after described water quality purification device 2 purifies passes the cylinder wall of nano fish tank 1 10 mouths of circulating water pipes arranged in the circumferential tangential direction are connected to each other. the

The water quality purification device 2 is connected with the water quality online automatic monitoring control device 12 through a data line. the

As shown in accompanying drawing 2, the water pump 5 draws water from the backwater adjustment tank 15 into the sand filter tank 3, and the sand filter tank 3 further processes the suspended solids, so that the turbidity of the water quality reaches 3 degrees, so that there is no Solid nitrogenous compounds that continue to decompose. The filtered water enters the biofilter 7, and the biological bacteria attached to the biological medium in the biofilter 7 converts the ammonia nitrogen in the water into nitrate at a rate of about 0.45g/m ² /h. Then the biologically treated water enters the protein skimmer 8, and the function of the protein skimmer 8 is to remove the protein and finer particles and ammonia nitrogen dissolved in the water by the principle of air flotation. More than 60 grams of ammonia nitrogen can be produced per kilogram of protein, so protein removal is very important. By filling the protein skimmer with oxygen, on the one hand, the air flotation principle of gas-liquid phase exchange can be used to remove protein and fine particles, and on the other hand, _CO2 can also be blown off to supplement the large amount of oxygen consumed in biological oxidation. At the same time, the protein skimmer is also a device for the uniform reaction of ozone and water. Therefore, the protein skimmer is an indispensable equipment for filtration treatment, supplementary dissolved oxygen and ozone disinfection treatment. Also included in Fig. 2 are: ozone system, oxygen 15, ozone supply 16, boiler 17, automatic dissolved oxygen 18, supplementary water 19.

The dissolved oxygen dosing equipment 11 adopts a pressurized automatic control pure oxygen perfusion system, and uses the principle that increasing the environmental surface pressure of the sealed water body can increase the saturation point of dissolved oxygen to add oxygen to a small part of the water in the system to dissolve this part of the water. The oxygen saturation point reaches several times the saturation point under standard atmospheric pressure, and then this part of water is mixed with most of the rest of the water to dilute the supersaturated dissolved oxygen to the dissolved oxygen saturation point under standard atmospheric pressure to achieve the purpose of increasing oxygen. The system can also set the dissolved oxygen value according to the amount of breeding, automatically supplement oxygen, and can alarm the abnormality of dissolved oxygen. The utilization rate of oxygen reaches 95%, which saves a lot of cost compared with other forms, and is efficient, fast and accurate . the

The water purification device 2 is equipped with an ozone generator 13 and an automatic temperature regulation unit 14 with a boiler, and they are respectively connected to the water purification device 2 through a circulating water pipeline 10 . the

The water after the above treatment also contains deadly microorganisms such as bacteria and viruses, so it is necessary to carry out disinfection treatment. Use the ozone generator 7 to disinfect the water body. Ozone disinfection has the advantages of fast chemical reaction, less dosage, no residual residue in water, and no secondary pollution. It has gradually become the mainstream method of water disinfection. the

Example 1

1. Pipeline installation of the farming device

The circulating water pipeline 10 is made of drinking water grade PVC water supply pipe, the ball valve and butterfly valve are made of PVC, and the bolts are made of stainless steel, so as to avoid secondary pollution caused by the use of metal pipes. the

2. Configuration of water purification device 2

Industrial aquaculture has high requirements on water quality, especially in closed recirculating aquaculture devices. The aquaculture water must be recycled. To meet the water quality requirements for the best growth environment for fish, it is necessary to have a water purification device with complete functions and good operation. It is the key to industrial fish farming. The water purification system mainly includes water pumps, filters, disinfection devices, etc. the

1. Water pump 5 is set to two for each workshop. the

2. Filter

(1) Microporous filter 4

The microporous filter 4 is equipped with a 120-mesh silk screen and two layers of stainless steel orifice plates. The whole body is made of stainless steel, the gears are made of engineering plastics, and the reducer is adjustable. It can remove residual bait and feces thoroughly and quickly, with good effect, low power consumption, and automatic operation. Cleaning, sewage solid recovery, installed at the water inlet of the backwater adjustment tank, and the backwater adjustment tank is set outdoors. the

(2) Sand filter tank 3

The most widely used mechanical filters in industrial circulating aquaculture and aquarium culture are normal-pressure filter sand tanks and high-pressure filter sand tanks. Because it can be easily backwashed, the sand tank has more advantages than the sand tank. Mechanical filters use hard fine particles as filter media. When water passes through a filter medium with a certain thickness, the suspended particles in the water are blocked by the medium and stay there, so as to achieve the purpose of water purification. The most common filter medium is quartz sand. According to different water quality requirements, adjusting the particle size of quartz sand, or laying gravel and quartz sand with different particle sizes in layers, can not only meet different water quality requirements, but also greatly increase the filtration speed. the

We choose the valveless FRP sand filter tank 3 as the physical filtration part. The quartz sand used for the filtration has good filtration effect, low price, can be taken nearby, and is easy to replace; it can efficiently remove various types of plankton, algae, inorganic and organic debris from water , metal ions, some soluble substances, proteins, reducing the burden of later biological treatment; strong filtration capacity, flexible use, simple and reliable operation of filtration, recoil and other working modes; the tank body is made of fiberglass reinforced fiber winding, anti-aging, beautiful appearance, The construction and maintenance are simple and convenient. the

(3) protein skimmer 8

Protein skimmer 8 is a simple and effective sewage treatment device used to reduce physical and chemical colloids. It uses the principle of air bubble surface tension adsorption to concentrate and separate organic matter, and removes suspended colloid, cellulose, protein, residual bait and feces and other organic matter in aquaculture sewage by air flotation. Removing these organic substances that generate ammonia nitrogen will correspondingly remove and reduce the content of ammonia nitrogen, making the breeding environment more superior and the conditions for high-density and long-term breeding. the

To stabilize the pH value, a large number of fine air bubbles will be injected into the water to form an exchange with carbon dioxide in the water body, the hardness of carbonate phosphate will decrease, and the pH value will be stabilized. It also functions as an ozone mixer and is equipped with an ozone inlet. When a small amount of ozone is injected, the contact chamber becomes a disinfection reaction tank at the same time. Installation, disassembly, maintenance, simple and convenient. the

The barrel body is injection-molded with sanitary PE board, and the dirt collector is injection-molded with plexiglass. The ejector adopts the original product of MAZZI company in the United States, with fine bubbles and high utilization rate of gas. The ozone tube is made of American original Teflon tube, and the booster pump is made of stainless steel water pump with aluminum shell. the

(4) Biological filter 7

Biofilter 7 is the most critical part in industrialized recirculating aquaculture, and is also the most difficult and maintenance-required part. In aquaculture water, ammonia nitrogen comes from the direct excretion of the gills of cultured fish, followed by the decomposition of fish feces, residual bait and other nitrogen-containing organic matter. Ammonia nitrogen (molecular state ammonia) is very toxic to fish. Generally, the edible fish is higher than 0.1mg/L, and the coral reef fish is higher than 0.01mg/L, which will cause fish death. It is necessary in aquaculture and aquarium breeding. The primary problem to overcome. the

Nitrifying bacteria are a type of aerobic microorganisms widely present in nature, which can convert ammonia nitrogen in water into nitrite, and then into nitrate with low toxicity. Nitrifying bacteria must adhere to solid surfaces for enrichment. The role of the biofilter media is to act as a carrier to provide bacteria with a large surface area of attachments and to allow the water flow to contact the attachments as evenly as possible. the

From the design of the biological filter 7, we can divide it into two types: trickling filter and submerged filter. the

The trickling biofilter not only provides a huge surface for nitrifying bacteria to grow, but also provides a continuous, slow flow of water containing high dissolved oxygen. Nitrification is an aerobic process, that is, nitrifying bacteria need sufficient oxygen to degrade ammonia nitrogen. At the same time, nitrifying bacteria need a certain contact time to transform ammonia nitrogen. Therefore, the trickling biofilter provides a good living environment for bacteria, and the conversion efficiency is high. the

In contrast, the submerged biological filter is submerged in water, and the content of dissolved oxygen often becomes the limiting factor for the conversion of ammonia nitrogen. How to provide a continuous, slow, and high dissolved oxygen water flow for the wet filter is a matter that designers need to fully consider question. Under most working conditions, submerged biofilters require air for oxygen supply. the

In the design, when conditions permit, placing FRP inclined plates or pebbles in the circulating water return ditch is used as the first-level biological treatment method. The FRP inclined plates have a large surface area, are easy to clean, and are cheap. The trickling biofilter and the submerged biofilter are combined, using a glass fiber reinforced plastic barrel, with elastic biofillers installed in the upper part of the barrel, biosphere biofillers installed in the lower part, and Canadian aeration stones installed in the bottom of the barrel. On the one hand, it removes carbon dioxide. the

Bio-filming is a difficult problem that has not been solved in China. Relevant research reports have confirmed that the reproduction process of nitrifying bacteria on biological fillers in natural seawater is quite slow. way of combining. the

(5) Disinfection device 6

Ozone disinfection has the advantages of fast response, less dosage, high spectral efficiency, no persistent residue in water, and no secondary pollution. It is also the most effective disinfection method currently recognized. Ultraviolet disinfection has the characteristics of low cost and low risk. However, pure oxygen is used in the design, so it is recommended to use ozone disinfection. the

3. Automatic temperature adjustment unit 14

Adding water and natural heat dissipation are unavoidable in the production process. It is necessary to add heat to the water body. The most economical heating equipment is a boiler. The system design uses a stainless steel plate type automatic heating heat exchanger, which does not corrode. During the working process, the temperature of the outlet water can be automatically adjusted according to the water temperature value set according to the requirements. The error is small, the land occupation is small, and the energy saving is good, which saves the foundation of building a temperature regulating pool. It also saves the tedious labor cost of manually adjusting the water temperature. the

4. Dissolved oxygen feeding equipment 11

To maintain a certain amount of dissolved oxygen in the water body, it is necessary to inflate the water with oxygen. The traditional aerator is an air pump, and the air source is unfiltered and sterilized air. The oxygen content is 21%, and 4/5 of the gas will escape from the water. Therefore, a large amount of electric energy is wasted to ensure sufficient dissolved oxygen. Excessive dosing will cause air bubble disease in fish due to excessive carbon dioxide, which seriously restricts the density of breeding and the quality of species. Therefore, the amount of dissolved oxygen directly affects the growth and bait efficiency of fish. When the dissolved oxygen in water is high, the fish eat less and grow faster, so the growth cost is low. Therefore, in order to achieve the lowest bait coefficient in industrial farming, the largest Breeding density, maximum weight gain rate, and best quality require the use of pure oxygen dissolved in water. the

4.1. Use the pressure dissolved oxygen system produced by POINT FOUR in Canada to dissolve pure oxygen into water, and the dissolved oxygen effect can reach 100%. The dissolved oxygen system can also automatically control the dissolved oxygen of the water body according to the needs. When it is lower than the set required value, the system will automatically turn on oxygenation, and when it is higher than the set required value, it will automatically turn off, avoiding waste of energy due to excessive oxygenation. , and alarm for abnormalities. the

4.2. Backup: The oxygen ceramic aerator produced by the same factory is used as a backup dissolved oxygen system (using liquid oxygen Dewar bottle) when the power is out and the breeding volume is small. It is recommended to use liquid oxygen, the cost is 50% lower than using an oxygen generator, and it is maintenance-free, but it is restricted by the location and conditions of oxygen addition. The price of the domestic oxygen generator is about 30% of the imported pure oxygen generator, but it has the disadvantages of high failure rate, low oxygen purity and short service life. the

5. Water quality online automatic monitoring and control device 12

The water quality online automatic monitoring and control system PT4ION produced by a Canadian company is adopted. 1. Some important parameters of water quality can be monitored online, the necessary parameters such as dissolved oxygen, temperature and ORP or TGP (the ORP or TGP value can roughly reflect the ammonia nitrogen content, and our company provides the corresponding conversion table), other optional parameters such as Salinity, PH, conductivity, turbidity, etc. 2. By setting the value of dissolved oxygen, the system can automatically control supplementary oxygen or stop oxygenation, which can greatly save oxygen consumption. 3. All monitored parameters can be displayed on the computer screen in real time through special software, and the data can be stored in the computer for further analysis. 4. This system can also carry out wireless transmission between the computer and the main controller, which can greatly facilitate the management personnel to monitor the fishing pond. 5. The system has an alarm function. When the dissolved oxygen is lower than or exceeds the set value, the system will automatically alarm for processing and 24-hour unmanned monitoring. The whole set of design scheme is first-class in China and advanced in the world. the

Claims (5)

1. A grouper industrialized recirculating aquaculture device, the device includes at least four nano-fish tanks (1) for aquaculture, mainly composed of a water pump (5), a filter device (9) and a disinfection device (6) The formed water purification device (2) is characterized in that the water pump is at least arranged between the nano fish tank (1), the microporous filter (4) and a sand filter tank (3), and the sand filter tank (3) be connected with biofilter (7) and protein skimmer (8) successively afterwards and constitute described filter device (9); In this nano fish tank (1), water pump (5), filter device ( 9) and the disinfection device (6) are respectively equipped with circulating water pipes (10). 2. The grouper industrialized recirculating aquaculture device according to claim 1, characterized in that said water purification device (2) is equipped with dissolved oxygen input equipment (11), and the equipment is connected to protein The separator (8) supplies oxygen to the water purification device (2). 3. according to claim 1 or 2 described grouper industrialized recirculating aquaculture device, it is characterized in that described water quality purification device (2) is equipped with ozone generator (13) and the automatic temperature regulation unit of band boiler (14), and they are respectively connected in the water purification device (2) by circulating water pipeline (10). 4. grouper industrialized recirculating aquaculture device according to claim 3, is characterized in that described water quality purification device (2) passes through the nano fish tank (1) of a backwater regulating pond (15) and aquaculture The water outlets arranged at the bottom of the center are connected, and the return water purified by the water purification device (2) is connected through the mouth of the circulating water pipe (10) arranged along the circumferential tangential direction on the tank wall of the nano fish tank (1). 5. The grouper industrialized recirculating aquaculture device according to claim 4, characterized in that the water quality purification device (2) is connected to the water quality online automatic monitoring control device (12) through a data line. the

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