KR102402357B1 - Imported aquatic products quarantine facility with breeding water purification and filtration equipment - Google Patents

Abstract

Provided is a circulation filtration system which can be used in a quarantine implementation site. The circulation filtration system comprises: an inflow unit (100) including an inflow water storage tank in which breeding water is stored and sterilized, and a sand filter and a sterilizer which are installed in the inflow water storage tank to remove floating matter from collected seawater and sterilize and disinfect the seawater; a storage unit (200) including a quarantine object tank which breeds organisms subjected to quarantine by supplying the breeding water stored in the inflow unit, a bead filter and a mesh filter installed to purify the breeding water in the quarantine object tank, and a submerged pump capable of moving breeding water to the bead filter; and a discharge unit (300) including a settling tank in which the breeding water drained from the storage unit is stored, and a chlorine generator, a plasma device, an electrolysis device, and a degassing device installed in the settling tank to sterilize the breeding water so as to sterilizer, store, discharge, and re-supply the breeding water stored in the settling tank to the storage unit. As such, energy consumed for the movement of breeding water is reduced, and organisms subjected to quarantine can be more stably bred.

Description

Imported aquatic products quarantine facility with breeding water purification and filtration equipment}

The present invention relates to a quarantine enforcement site for quarantine of imported aquatic products (fish and crustaceans), and the indiscriminate structure currently used in domestic private quarantine testing sites is designed so that there is no inflow of pathogens. More specifically, UV sterilizer and sand filtration Aquatic product quarantine enforcement facility breeding water that can completely sterilize and discharge unknown inflow harmful pathogens that may exist in the water used by sterilizing the inflow water through the It's about a filter.

As the demand for aquatic products continues to increase, the importance of food safety of imported aquatic products and the prevention and spread of aquatic diseases are being focused on. Since the importation of aquatic products was fully opened in July 1997, the imports of aquatic products continued to increase, and the number of defective aquatic products also began to rapidly increase.

Imported aquatic products introduced for aquaculture around the world are also bringing in fish diseases from overseas. Most of the pathogens of the introduced disease are host-swiching in which the pathogen is exchanged between the aquacultured organism and the native species in the natural ecosystem, which causes serious problems such as the mass death of aquacultured fish species.

Overseas infectious diseases that have not been reported before have also occurred in domestic farms. Shrimp white spot virus, which first occurred in China in 1992, was first discovered in Korea in 1993. In addition, since the mid-2000s, diseases of unknown causes such as flaccidity have been occurring in farmed halibut, and this is also reported as damage caused by various pathogens and pollutants as domestic imports of aquatic products increase.

Imported aquatic products currently distributed in Korea are distributed through the import inspection and confirmation procedure of the National Fisheries Quality Management Service at about 900 quarantine enforcement sites across the country. . At this time, feed and water changes are made to the land tank where the imported aquatic products stay, and the discharged water from the land tank contains ecological disturbance substances of unknown nationality and pathogenic harmful substances parasitic in the infected fish body during the aquaculture process. This has a significant impact on the environment of the coastal waters where it is released, and at the same time, if this contaminated seawater is used for aquaculture in a farm in the coastal waters, it may cause secondary problems such as the mass death of aquacultured fish in the farm.

The domestic fishery quarantine enforcement site is a quarantine place operated by the private sector, not a national quarantine enforcement site. Inflow and discharge, transport water, water treatment, etc.), the treatment of dead fish, response methods in case of disease, and record information management are insufficient.

As there are concerns about the leakage of various pathogens and pollutants, a national quarantine enforcement site that meets international standards should be established. As the first step in the development of a national quarantine enforcement site, strict quarantine of overseas seafood should be carried out, and it is necessary to develop a system that can treat inflow and discharge water and block pathogens flowing in from the seawater in the surrounding coastal waters.

Domestic Patent Publication No. 10-2015-0016796 discloses a first conveyor for transferring a quarantine object, a radiation measuring means for measuring the radiation of a quarantine object being transported on the first conveyor, and a distance measurement for measuring the distance of the radiation measuring means In a radiation quarantine system and quarantine method comprising means, instrument moving means for moving the radiation measuring means, radiation analysis means for analyzing the intensity of radiation measured through the radiation measuring means, and control means for controlling the measuring instrument moving means discloses about it. Domestic Laid-Open Patent Registration No. 10-2302030 discloses ozone or total residual oxides (TRO) generated by ozone in the discharged water in order to remove harmful substances that disturb the ecology from the discharge water from onshore water tanks such as land aquaculture farms and quarantine enforcement sites. Disclosed is a continuous treatment type onshore water tank discharge water treatment device that is treated and discharged using Domestic Laid-Open Patent No. 10-2016-0121140 has a radioactive shielding unit, and multiple radioactivity measuring units are arranged therein to measure radioactivity for several samples at the same time. Disclosed is a radioactivity inspection system and inspection method that can continuously inspect radioactive contamination, which can be identified as a radioactive contamination and the quarantine time can be reduced.

In the present invention, aquatic diseases occurring abroad are introduced together with imported aquatic products introduced for aquaculture. Most of the pathogens of the introduced diseases are caused by host-swiching, which involves exchanging pathogens between aquaculture organisms and natural ecosystem species in the farm. The purpose of this study is to provide a breeding water filtration system suitable for domestic conditions by verifying the effectiveness of water treatment equipment for influent and discharged water treatment.

In order to achieve the above object, the breeding water filtering device of the quarantine enforcement station that can be used in the quarantine enforcement station according to an embodiment of the present invention is installed in the inflow water storage tank in which breeding water collected from seawater is stored and sterilized and the inflow water storage tank is collected. an inlet 100 including a sand filter and a sterilizer capable of removing and sterilizing floating substances in seawater; A quarantine object tank for breeding quarantine target organisms by supplying breeding water stored in the inlet, and a bead filter and a mesh filter are installed so that breeding water in the quarantine object tank can be purified, and breeding water can be moved to the bead filter A storage unit 200 in which a submersible pump is installed; Sterilization and storage of breeding water stored in the settling tank, including a settling tank in which the breeding water drained from the storage unit is stored, and a chlorine generator installed in the settling tank to sterilize breeding water, a plasma device, an electrolysis device, and a degassing device It may be composed of a discharge unit 300 for discharging and re-supplying to the storage unit.

The present invention standardizes a private quarantine test site that is insufficient to the international quarantine enforcement site standards and kills pathogens by more efficiently sterilizing influent and discharged water, thereby minimizing secondary damage caused by discharged water, and minimizing energy use during circulation of breeding water. This has the effect of operating a quarantine enforcement center at a low cost.

1 shows a schematic diagram of a quarantine enforcement site using the breeding water filtering device of the present invention.
Figure 2 shows a schematic diagram of a quarantine enforcement site using the breeding water filtering device of the present invention.
Figure 3 shows a schematic diagram of a breeding water transfer device that can be used in the quarantine enforcement site of the present invention.
Figure 2 shows a graph of verifying the microbe killing effect of the ultraviolet sterilizer, the plasma device, and the electrolysis device.
3 shows a graph showing the virus killing effect verification graph of the ultraviolet sterilizer, the plasma device, and the electrolysis device.

The present invention is configured to most efficiently remove harmful pathogens introduced from abroad through live imported aquatic products and to be easily applied in a small private quarantine testing center. This may be applicable not only to private quarantine enforcement centers distributed across the country, but also to national quarantine enforcement stations in the future. Hereinafter, it will be described in detail with reference to the drawings related to the quarantine enforcement site of the present invention.

1 and 2 show a seafood quarantine enforcement site using a breeding water purification and filtration device that can be used in the quarantine enforcement site of the present invention. The seafood quarantine enforcement site of the present invention consists of an inlet part, a storage part, and an outlet part. The breeding water purification device usable in the inlet 100 includes an inflow water storage tank in which the introduced seawater is stored and sterilized, and a sand filter and a sterilizer installed in the inflow water storage tank to remove suspended substances and sterilize the collected seawater. .

The breeding water purification device usable in the storage unit 200 includes a quarantine object tank for breeding quarantine target organisms by supplying breeding water stored in the inflow part to a position lower than the inflow part 100, and the breeding water of the quarantine object tank A bead filter and a mesh filter are installed to be purified, and an underwater pump capable of moving breeding water to the bead filter is installed.

The breeding water purification device usable in the discharge unit 300 includes a settling tank in which breeding water drained from the storage is stored at a lower position than the storage, a chlorine generator installed in the settling tank to sterilize the breeding water, and a plasma device , an electrolysis device, a degassing device, and sterilizes and stores the breeding water stored in the settling tank, discharges, and re-supply to the storage unit.

The installation locations of the inlet, storage, and discharge parts that make up the quarantine enforcement site are positioned at different heights (height) of the water tank to induce water flow using gravity to minimize energy use. Natural water flow is achieved from the inflow water storage tank to the quarantine target tank using height. In the present invention, the height difference between the storage part and the discharge part from the inlet part was set to 0.7 m, and the height difference between the storage part from the inlet part did not exceed 2 m. In addition, the breeding water transfer device 40 may be installed in the middle part of the inlet 100 and the storage part 200 and the middle part between the storage part 200 and the discharge part 300 .

In the inlet unit 100 of the present invention, an inflow water storage tank 10 in which breeding water collected from seawater is stored and sterilized is installed, and the inflow water storage tank is provided with a sand filter 11 for removing suspended substances and sterilizing the collected seawater. and a sterilizer 12 may be installed.

The sand filter 11 of the present invention is commonly known, and the sand filter is a device that removes contaminants from water by using sand as a filter medium. It is possible to select and install slow sand filtration that processes hr and rapid sand filtration that processes 120m/hr.

As an embodiment, inside the filter of the chamber structure through which the collected breeding water can pass, the filter gravel with large particle diameter and small particle size is put on it, and it can be installed in a gravity type that can be filtered downward by putting it in the order of Wangsa and Filter. .

The sterilizer 12 of the present invention can be implemented to be installed in a conventional water treatment, and an ultraviolet (Ultraviolet light, UV) sterilizer is installed as an embodiment of the present invention. Ultraviolet sterilizers do not generate disinfection by-products, so they not only show a stable disinfection effect, but can also remove substances that are difficult to remove with chlorine or ozone. There is this. Accordingly, according to an embodiment of the present invention, in order to compensate for the disadvantages of the ultraviolet sterilizer generated in the water, the sand filter may be installed to have a structure in which the ultraviolet sterilizer is irradiated after pre-filtration.

The storage unit 200 of the present invention includes a bead filter 21 and a mesh filter 22 so that the quarantine object tank 20 for breeding by supplying imported seafood and breeding water stored in the inlet and breeding water in the tank can be purified. ) is installed, and a submersible pump may be installed to move breeding water to the bead filter. In the storage unit, removal of solids, water purification and recycling, and constant monitoring are performed.

The bead filter and the mesh filter are practical in terms of efficiency and management because they can completely remove the solid excrement of aquatic products at a minimum cost and remove nitrogen compounds such as ammonia in the water.

A monitoring system 23 capable of monitoring the quarantine object tank may be separately installed in the storage unit. The monitoring system of the present invention includes a sensor unit for measuring the water quality of a quarantine object tank, a memory unit that converts the information measured by the sensor unit into data and transmits it to the control unit, and real-time automatic according to a basic setting value from the information received from the memory It may be made of a control unit that can be controlled by

The monitoring system according to an embodiment of the present invention detects the quality of the water in the quarantine object tank in real time through the sensor unit, and according to the set value of the data transmitted by the memory unit, the control unit operates the water pump of the storage unit, and the drained breeding water is a bead filter and a mesh After going through the filter and purification process, the process of being re-supplied to the quarantine object tank is ordered, or the process of moving to the discharge unit to be described later and going through a series of processes is ordered to be re-supplied to the quarantine object tank or discharged to the outside.

The discharge unit 300 of the present invention includes a settling tank 30 in which the breeding water drained from the storage unit is stored, and a chlorine generator 31 and a plasma generator 32 installed in the settling tank to sterilize the breeding water stored therein. , an electrolysis device 33, a degassing device 34 may be installed.

The chlorine generator operates the chemical input device and the chlorine generator so that the breeding water stored in the settling tank achieves the set appropriate chlorine concentration. Specifically, the operation of the chlorine generator generates chlorine in the chlorine generator, and the generated chlorine is transferred to the chemical injector and can be mixed with the breeding water of the settling tank through the puncturing process of the chemical injector.

The plasma generating apparatus of the present invention processes the breeding water to be exposed to the plasma for a predetermined time by running the device on the breeding water of the settling tank. All substances called plasma change their phase depending on the temperature, and when external energy is applied to the gas above a critical value, the atoms constituting the gas dissociate into positively charged ions and negatively charged electrons. At this time, the ions and electrons Refers to a group of charged particles that are distributed about the same density and exhibit electrical neutrality.

In general, the plasma generator is formed in a vacuum ranging from 1.3 to 13.3 mbar, and there is an atmospheric pressure plasma using a corona or dielectric discharge. DC power and RF power of microwave frequency up to 10 GHz are used for power. When plasma is generated, gas is generated, and these gas particles exhibit complex electrical + and - properties, and refer to particles with simple or complex loads in the air at the atomic or molecular level. The ionizing gas generated by electron beam irradiation or electrical discharges, which is the source of plasma, is O+, O2+, O3+, N2+, N3+, N4+, NO+, N2O+, H2O+, Ar+, etc. as + ions, and O- and O22 as - ions. -, NO2-, NO3- and OH-. In addition, when oxygen is used as an injection gas, nitrogen ions are not generated, and the generated anions and cations form clusters and have a property of lengthening in proportion to the size of the clusters.

Plasma disinfection method is used as a water treatment equipment system by generating various active radicals generated through underwater discharge to sterilize, and is suitable for disinfecting a relatively large amount of water in a short time. Plasma disinfection apparatus according to the present invention can effectively remove all kinds of harmful pathogens that can be discharged while the organisms to be quarantined.

The electrolysis device 33 is a technology developed as a method of sterilizing the ballast water of a ship. There are several considerations to use at aquaculture sites or quarantine test sites, but compared to other methods, energy consumption is low, the device is simple, and operation is easy. It is used continuously and stably in various processes.

It is used for advanced water purification or wastewater treatment of water containing inorganic or organic electrolytes, and reactions such as physical and chemical oxidation and reduction decomposition, precipitation, neutralization, coagulation, and sterilization occur by supplying electric energy to the electrolyte. This is a method of removing various contaminants using these reactions. The advantage of the electrolysis device is that it has a strong sterilization effect, but it has a disadvantage that it cannot be used in fresh water because it can be operated only when NaCl (sodium chloride), an electrolyte, is present in water.

The degassing device 34 is installed at a position lower than the installation height of the settling tank so that the breeding water on which the sterilization process has been completed moves by a water wheel in the settling tank. A breeding water supply unit is installed so as to be movable to etc. can be separated. At this time, a gas discharge unit is installed in the tank, so that the gas separated from the breeding water can be discharged to the outside. At the bottom of the tank, a discharge pipe through which the breeding water for which degassing has been completed is collected and discharged to the outside or re-supplied to the quarantine object tank may be installed.

The discharge unit can be finally disinfected by the settling tank and chemical sterilization, and the water discharged from the discharge unit is chemically disinfected such as chlorine, thereby maintaining a condition in which no pathogens can survive. Accordingly, the spread of pathogens derived from imported seafood is suppressed, and the discharged water is minimized and recirculated. In addition, since the flow of water uses gravity due to the step difference even within the discharge part, energy use can be minimized.

The installation locations of the inlet, storage, and discharge parts that make up the quarantine enforcement site are positioned at different heights (height) of the water tank to induce water flow using gravity to minimize energy use. Natural water flow is achieved from the inflow water storage tank to the quarantine target tank using height.

From the quarantine object tank 20 to the bead filter 21, water is circulated using a submersible pump. After that, the water flow is maintained without energy consumption due to gravity in the movement of water back to the quarantine object tank or sedimentation tank through the mesh filter 22 . The system of the present invention does not require energy supply for the movement of breeding water except for the movement from the quarantine object tank to the bead filter.

In the present invention, the transfer of breeding water connecting the inlet 100 and the storage 200 and the storage 200 and the discharge 300 is a method using the breeding water transfer device 40 rather than a general pipe connection method. is formed with In general, in the circulation filtration type aquaculture facility, the breeding water passes through the pipe through a pipe for the transport of the breeding water and is then transferred to the next tank. At this time, if the flow rate of breeding water inside the pipe is slow, it may have a reverse infection effect in which pathogens or viruses rise into the water tank in the previous stage through the water flow. In order to prevent this, it is preferable that the breeding water once discharged from the water tank is cut off from the discharged water tank and moved to the next tank.

3 shows a breeding water moving device using a center shift. The breeding water transfer device 40 of the present invention may use a breeding water moving device capable of collecting breeding water by center movement due to the weight difference of breeding water. The breeding water moving device may be formed by connecting a container capable of holding a certain amount of breeding water and a fixed support to the lower portion of the center of gravity of the container, and a support to the lower portion of the container. When a certain amount of breeding water is contained in the container, the center of gravity of the container moves from the lower part to the upper part, and the container is turned over while pouring the breeding water to the lower part.

As another embodiment, an electric opening/closing device capable of intermittently opening and closing the pipe at regular time intervals may be used, and one or more breeding water moving devices may be combined and used.

<Experimental Example 1> SPF circulation filtration system sterilization effect verification

In order to verify the sterilization effect of the ultraviolet sterilizer, plasma device, and electrolysis device, which are disinfection devices forming the quarantine enforcement site of the present invention, the sterilization effect was verified using marine microorganisms and viruses that affect fish.

Marine microorganisms according to Experimental Example 1 of the present invention were used by selecting and culturing Vibrio strains affecting fish. The experimental method is that after culturing the Vibrio strain, it is immersed in a water tank (300L), and then each device is operated. An experiment was conducted to verify the microbial sterilization effect by measuring CFU).

Viruses were used by selecting and culturing one virus appearing in seawater and freshwater, and after immersing the virus in a water tank (300L) in the same manner as in the above method, each device was operated. It was confirmed whether the virus was killed through virus culture and TCID50 (Tissue Culture Infective Dose 50%) of the experimental water in the water tank before and after the operation of the device and the influent after the operation of the device. The pathogen killing effect of each device was confirmed through 3 repeated experiments.

4 is a graph showing the verification graph of the microbial killing effect of the ultraviolet sterilizer, the plasma device, and the electrolysis device. As a result of UV sterilization, it was confirmed that more than 99% of microorganisms were sterilized when 40 minutes had elapsed after operation of the device, and that the influent water flowing from the device was also sterilized and flowed in by more than 99%. As a result of plasma sterilization, it was confirmed that more than 99% of microorganisms were sterilized when 40 minutes had elapsed after operation of the device, and that the influent water flowing from the device was also sterilized by more than 99%.

As a result of electrolysis sterilization, it was confirmed that more than 99% of microorganisms were sterilized when 40 minutes had elapsed after operation of the device, and that the influent water flowing from the device was also sterilized and flowed in by more than 99%. Since all three devices according to Experimental Example 1 have sterilized and disinfected more than 99% of the pathogen, it was confirmed that they can be operated in the SPF circulation filtration system to be developed.

5 is a graph showing the virus killing effect verification graph of the ultraviolet sterilizer, the plasma device, and the electrolysis device. As a result of UV sterilization of the virus, it was confirmed that more than 99% of the virus was killed when 40 minutes had elapsed after operation of the device, and it was confirmed that more than 99% of the influent water flowing from the device was also killed and introduced. As a result of plasma sterilization of the virus, it was confirmed that more than 99% of the virus was killed when 40 minutes had elapsed after operation of the device, and it was confirmed that the influent water introduced from the device was also killed and flowed by more than 99%.

As a result of electrolytic sterilization of the virus, it was confirmed that more than 99% of the virus was killed when 40 minutes had elapsed after operation of the device, and it was confirmed that the influent water introduced from the device was also killed and flowed in by more than 99%. Since all three devices according to Experimental Example 1 have sterilized and disinfected more than 99% of the virus, it was confirmed that they can be operated in the SPF circulation filtration system to be developed.

By providing a circulation filtration system that can prevent and manage diseases that block the path of infection at the national quarantine enforcement site and block pathogens flowing in from the seawater in the coastal waters around the farm, preventing the inflow of pathogens and enhancing the profits of fishermen by reducing the mortality rate is possible, so it has industrial applicability.

100: inlet 200: storage
300: discharge unit
10: influent reservoir 11: sand filter
12: Sterilizer
20: quarantine object tank 21: bead filter
22: mesh filter 23: monitoring system
30: sedimentation tank 31: chlorine generator
32: plasma device 33: electrolysis device
34: degassing device 40: breeding water transfer device

Claims (5)

It consists of an inflow water storage tank in which breeding water introduced from the outside is stored and sterilized, a quarantine object tank that receives breeding water to breed quarantine target organisms, and a sedimentation tank in which breeding water drained from the quarantine object tank is stored,
The inflow water storage tank, the quarantine object tank, and the settling tank are installed with a breeding water moving device so that breeding water can be moved by position movement due to a height difference,
The breeding water moving device is characterized in that a container capable of storing a certain amount of breeding water, a fixed support is connected to the lower part of the center of gravity of the container, and a pedestal is connected to the lower part of the container, so that the breeding water is moved by moving the center of the weight of the breeding water. Quarantine enforcement device for imported seafood
According to claim 1, wherein the inflow water storage tank, imported aquatic products quarantine enforcement site, characterized in that it comprises a sand filter and sterilizer capable of removing and sterilizing suspended matter in the introduced breeding water.
The method according to claim 1, wherein the quarantine object tank is provided with a bead filter and a mesh filter so that the breeding water can be purified at a higher position than the quarantine object tank,
Imported seafood quarantine enforcement site, characterized in that the bead filter is installed with an underwater pump capable of moving breeding water
The settling tank according to claim 1, wherein the settling tank includes a chlorine generator, a plasma device, an electrolysis device, and a degassing device for sterilizing the breeding water, and sterilizes and stores the breeding water stored in the settling tank and discharges it and returns it to the quarantine object tank. Imported aquatic products quarantine enforcement site, characterized in that it consists of a discharge unit that supplies
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