CN220494219U - A detoxification device for aflatoxin in granular agricultural product - Google Patents
A detoxification device for aflatoxin in granular agricultural product Download PDFInfo
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- CN220494219U CN220494219U CN202321918128.7U CN202321918128U CN220494219U CN 220494219 U CN220494219 U CN 220494219U CN 202321918128 U CN202321918128 U CN 202321918128U CN 220494219 U CN220494219 U CN 220494219U
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Abstract
The utility model relates to the technical field of agricultural product safety, and provides a detoxification device for aflatoxin in granular agricultural products, which comprises a gas-liquid mixing device, an ozone generator, a micro-nano bubble releaser and a reaction tank; the water inlet and the water outlet of the gas-liquid mixing device are respectively communicated with the reaction tank through a water inlet pipeline and a water outlet pipeline, and the ozone outlet of the ozone generator is communicated with the reaction tank through an ozone pipeline; an ozone aeration head and a micro-nano bubble releaser which are arranged in the reaction tank are respectively connected with an ozone pipeline and a water outlet pipeline; the water in the reaction tank flows through the gas-liquid mixing device through the water inlet pipeline, is mixed with preset gas, flows to the micro-nano bubble releaser through the water outlet pipeline, and releases micro-nano bubbles through the micro-nano bubble releaser, ozone generated by the ozone generator is released into the reaction tank through the ozone aeration head through the ozone pipeline, and aflatoxin in granular agricultural products can be removed after the ozone and the micro-nano bubbles are mixed in the water.
Description
Technical Field
The utility model relates to the technical field of agricultural product safety, in particular to a detoxification device for aflatoxin in granular agricultural products.
Background
Agricultural and sideline products are of vital importance for our daily lives, and the safety of agricultural and sideline products is directly closely related to the health of human beings. Under the influence of various factors, agricultural products are easy to be polluted by mycotoxins in the processes of planting, collecting, storing and transporting and processing, and the most common problem is aflatoxin pollution. Aflatoxin (AFT) is a secondary metabolite produced by moulds or parasitic aspergillus and is the most toxic class of mycotoxins currently found. At present, more than 20 aflatoxins and derivatives thereof have been separated, wherein two of the aflatoxins are aflatoxin B 1 (Aflatoxin B 1 ，AFB 1 ) And aflatoxin B 2 (Aflatoxin B 2 ，AFB 2 ) Aflatoxin B 1 The toxicity of the product is 10 times and 68 times that of potassium cyanide and arsenic respectively.
The existing technology for detoxification of agricultural byproducts is mainly divided into a physical method, a chemical method and a biological method, and the three detoxification technologies have a certain detoxification effect on aflatoxin, and compared with the chemical method and the biological method, the physical method has the advantages of simplicity in operation, low cost, good repeatability, high standardization degree and the like, and is widely used in practical application. Because the solid granular agricultural and sideline products have certain specificity, the physical adsorption method cannot be used for detoxification. Therefore, the removal of aflatoxin in solid granular agricultural and sideline products is one of the main problems facing the whole agriculture and food industry at present on the basis of not changing the original properties of the solid granular agricultural and sideline products.
Therefore, a new solution is needed to solve the above technical problems.
Disclosure of Invention
The utility model aims to provide a simple, rapid and low-energy-consumption detoxification device for aflatoxin in granular agricultural products, which can be industrially used.
The utility model provides a detoxification device for aflatoxin in granular agricultural products, which comprises a gas-liquid mixing device, an ozone generator, a micro-nano bubble releaser and a reaction tank;
the water inlet of the gas-liquid mixing device is communicated with the reaction tank through a water inlet pipeline, the water outlet of the gas-liquid mixing device is communicated with the reaction tank through a water outlet pipeline, and the ozone outlet of the ozone generator is communicated with the reaction tank through an ozone pipeline;
an ozone aeration head and a micro-nano bubble releaser are arranged at the position, close to the bottom, in the reaction tank, one end of the ozone pipeline, which is positioned in the reaction tank, is connected with the ozone aeration head, and one end of the water outlet pipeline, which is positioned in the reaction tank, is connected with the micro-nano bubble releaser;
the water in the reaction tank flows through the water inlet pipeline, flows through the gas-liquid mixing device, is mixed with preset gas, flows to the micro-nano bubble releaser through the water outlet pipeline, releases micro-nano bubbles through the micro-nano bubble releaser, and ozone generated by the ozone generator is released into the reaction tank containing the micro-nano bubbles through the ozone pipeline and the ozone aeration head.
According to the detoxification device for aflatoxin in granular agricultural products, which is provided by the utility model, the gas-liquid mixing device comprises a gas-liquid mixing pump and a water tank, wherein a water inlet of the gas-liquid mixing pump is communicated with the reaction tank through the water inlet pipeline, a water outlet of the gas-liquid mixing pump is communicated with a water inlet of the water tank, a gas inlet of the gas-liquid mixing pump is communicated with a gas source, and a water outlet of the water tank is communicated with the reaction tank through the water outlet pipeline.
According to the detoxification device for aflatoxin in granular agricultural products, the water inlet end of the water inlet pipeline, the micro-nano bubble releaser and the ozone aeration head are immersed in water in the reaction tank.
According to the detoxification device for aflatoxin in granular agricultural products, air or ozone is introduced into the air inlet of the gas-liquid mixing pump, and the flow rate of the introduced air or ozone is more than 0 and less than or equal to 1.5L/min.
According to the detoxification device for aflatoxin in granular agricultural products, which is provided by the utility model, a water inlet regulating valve and a vacuum gauge are arranged on the water inlet pipeline, and a water outlet regulating valve and a pressure gauge are arranged on the water outlet pipeline.
According to the detoxification device for aflatoxin in granular agricultural products, the pressure range of the pressure gauge is 0.2Mpa-0.4Mpa.
According to the detoxification device for aflatoxin in granular agricultural products, the ozone generator is further provided with an air inlet, an air outlet and an ozone inlet, an air flowmeter is arranged on a pipeline between the air outlet and the ozone inlet, air enters the ozone generator through the air inlet, is compressed and flows to the air flowmeter through the air outlet, and after the flow rate is regulated through the air flowmeter, the air enters ozone generated by the ozone generator through the ozone inlet.
According to the detoxification device for aflatoxin in granular agricultural products, the particle size of the ozone aeration head is 1-10 mu m.
According to the detoxification device for aflatoxin in granular agricultural products, which is provided by the utility model, a water purifier is arranged on the water inlet pipe.
According to the detoxification device for aflatoxin in granular agricultural products, the inner diameters of the water outlet pipeline and the water inlet pipeline are 20mm, and the inner diameter of the ozone pipeline is 6-8 mm.
The technical scheme of the utility model has the following beneficial effects:
according to the detoxication device for aflatoxin in the granular agricultural products, after the gas-liquid mixing device, the ozone generator, the micro-nano bubble releaser and the reaction tank are combined, the solid granular agricultural products are detoxified by adopting a mode of mixing ozone and micro-nano bubble water, so that toxins on the surfaces of the solid granular agricultural products are removed or degraded, and the characteristics of the solid granular agricultural products are not influenced. Because the micro-nano bubble has the characteristics of large specific surface area, high mass transfer efficiency, easiness in generating free radicals and the like, after the micro-nano bubble water is mixed with ozone, the mass transfer coefficient and the dissolution rate of the ozone can be improved, the generation of hydroxyl free radicals by the micro-nano bubble is promoted, the ozone oxidation effect can be remarkably improved, and the detoxification effect is further enhanced. And the treatment system of the whole detoxification device belongs to circulating ozone micro-nano bubble water treatment, namely after aflatoxin in solid granular agricultural products is degraded, the used liquid in the reaction tank is circularly sucked and discharged through a gas-liquid mixing device, and then micro-nano bubbles are circularly released through a micro-nano bubble releaser, so that the recycling of resources is realized, the action time of ozone and micro-nano bubbles is long, the detoxification efficiency is further improved, the ideal detoxification effect is achieved, and the edible safety of the agricultural products is ensured. Therefore, the detoxification device for aflatoxin in granular agricultural products has the advantages of simplicity in operation, high detoxification speed, low energy consumption, industrial use and the like.
Drawings
In order to more clearly illustrate the utility model or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a detoxification device for aflatoxin in granular agricultural products according to an embodiment of the present utility model;
FIG. 2 is a flowchart of a detoxification method for aflatoxin in granular agricultural products according to an embodiment of the present utility model;
FIG. 3 is a graph showing experimental data for detoxification of peanut meal at different pressure values according to an embodiment of the present utility model;
fig. 4 is a graph of experimental data for detoxification of peanut meal of different particle sizes provided in example two of the present utility model;
fig. 5 is a graph of experimental data for detoxification of peanut meal at different treatment times provided in example three of the present utility model.
Reference numerals:
1. a reaction tank; 2. a water inlet regulating valve; 3. a vacuum gauge; 4. a water inlet; 5. a gas-liquid mixing pump; 6. presetting a gas inlet; 7. a water tank; 8. a water outlet; 9. a pressure gauge; 10. a water outlet regulating valve; 11. a micro-nano bubble releaser; 12. an ozone aeration head; 13. an ozone outlet; 14. an ozone generator; 15. an ozone inlet; 16. an air flow meter; 17. an air outlet; 18. an air inlet; 19. a water inlet pipeline; 20. a water outlet pipeline; 21. an ozone pipeline; 22. and a gas-liquid mixing device.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1, the present utility model provides a detoxification device for aflatoxin in granular agricultural products, the detoxification device comprises a gas-liquid mixing device 22, an ozone generator 14, a micro-nano bubble releaser 11 and a reaction tank 1.
Wherein the reaction tank 1 is used for containing water and granular agricultural products containing aflatoxin, and the gas-liquid mixing device 22 is used for sucking water in the reaction tank 1 and sucking preset gas, and mixing the preset gas and the water. The ozone generator 14 is used for generating ozone, and the micro-nano bubble releaser 11 is used for releasing micro-nano bubbles.
Specifically, the gas-liquid mixing device 22 is provided with a water inlet 4 and a water outlet 8, the water inlet 4 of the gas-liquid mixing device 22 is communicated with the reaction tank 1 through a water inlet pipeline 19, and the water outlet 8 of the gas-liquid mixing device 22 is communicated with the reaction tank 1 through a water outlet pipeline 20.
In one embodiment, the gas-liquid mixing device 22 comprises a gas-liquid mixing pump 5 and a water tank 7, the gas-liquid mixing pump 5 being provided with a water inlet 4 and a water outlet, and the water tank 7 being provided with a water inlet and a water outlet 8. Wherein, the water inlet 4 of the gas-liquid mixing pump 5 is communicated with the reaction tank 1 through a water inlet pipeline 19, the water outlet of the gas-liquid mixing pump 5 is communicated with the water inlet of the water tank 7, and the water outlet 8 of the water tank 7 is communicated with the reaction tank 1 through a water outlet pipeline 20. The gas-liquid mixing pump 5 further comprises a preset gas inlet 6, and the preset gas inlet 6 of the gas-liquid mixing pump 5 is communicated with a gas source.
The ozone generator 14 is an air source ozone generator, and is provided with an air inlet 18, an air outlet 17, an ozone inlet 15 and an ozone outlet 13, an air flowmeter 16 is arranged on a pipeline between the air outlet 17 and the ozone inlet 15, air enters a compressor of the ozone generator 14 through the air inlet 18, flows to the air flowmeter 16 through the air outlet 17 after being compressed, and enters ozone generated in the ozone generator 14 through the ozone inlet 15 after the flow rate is regulated through the air flowmeter 16, and the ozone outlet 13 is communicated with the reaction tank 1 through an ozone pipeline 21.
An ozone aeration head 12 and a micro-nano bubble releaser 11 are arranged in the reaction tank 1 near the bottom, one end of an ozone pipeline 21 positioned in the reaction tank 1 is connected with the ozone aeration head 12, and one end of a water outlet pipeline 20 positioned in the reaction tank 1 is connected with the micro-nano bubble releaser 11.
The water in the reaction tank 1 flows through the gas-liquid mixing device 22 through the water inlet pipeline 19 to be mixed with preset gas, flows to the micro-nano bubble releaser 11 through the water outlet pipeline 20, releases micro-nano bubbles through the micro-nano bubble releaser 11, ozone generated by the ozone generator 14 is released into the reaction tank containing micro-nano bubbles through the ozone aeration head 12 through the ozone pipeline 21, and the micro-nano bubbles and ozone are mixed in the water to form an ozone micro-nano bubble mixed solution.
Further, the water inlet pipeline 19, the micro-nano bubble releaser 11 and the ozone aeration head 12 are all arranged in the reaction tank 1, and the water inlet end of the water inlet pipeline 19, the micro-nano bubble releaser 11 and the ozone aeration head 12 are immersed in water in the reaction tank 1, so that the water in the reaction tank 1 can enter the gas-liquid mixing device 22 through the water inlet pipeline 19, and micro-nano bubbles and ozone can be released into the water for mixing.
In one embodiment, the water outlet pipeline 20, the water inlet pipeline 19 and the ozone pipeline 21 are all arranged on the reaction tank 1 in a non-fixed mode, and the positions of the water outlet pipeline, the water inlet pipeline and the ozone pipeline can be moved according to actual use conditions.
In one embodiment, the inner diameters of the water outlet pipe 20 and the water inlet pipe 19 are 20mm, and the inner diameter of the ozone pipe 21 is 6mm-8mm.
In one embodiment, micro-nano bubble releaser 11 and ozone aeration head 12 are removably mounted with water outlet line 20 and ozone line 21, respectively, for replacement.
In one embodiment, the water inlet regulating valve 2 and the vacuum gauge 3 are arranged on the water inlet pipeline 19, the water outlet regulating valve 10 and the pressure gauge 9 are arranged on the water outlet pipeline 20, and the indication number of the pressure gauge 9 is controlled by regulating the water inlet regulating valve 2 and the water outlet regulating valve 10, so that the size and the number of micro-nano bubbles generated by the micro-nano bubble releaser 11 are controlled.
Wherein, the working range of the vacuum gauge 3 is-0.03 Mpa to-0.1 Mpa; the pressure range of the pressure gauge 9 is 0.2Mpa-0.4Mpa. Preferably, the pressure parameter of the pressure gauge 9 may be set at 0.34Mpa.
Further, the preset gas inlet 6 of the gas-liquid mixing pump 5 can be filled with air or ozone, and the flow rate of the filled air or ozone is greater than 0 and less than or equal to 1.5L/min. Preferably, the flow rate of the air or ozone to be introduced is controlled at 0.75L/min.
In this embodiment, the particle size of the ozone aeration head 12 is 1 μm to 10. Mu.m. Preferably, the particle size of the ozone aeration head 12 is 5. Mu.m.
The detoxification device adopts the micro-nano aeration stone to carry out ozone aeration, ozone is enabled to be diffused into liquid (water) which is also in a micro-nano level in a mist form through micro-nano level aperture on the ozone aeration head 12 by adjusting ozone flow, so that ozone mass transfer resistance can be reduced, ozone mass transfer efficiency can be improved, and energy consumption can be greatly reduced. Meanwhile, the gas-liquid interface can generate a part of hydroxyl radicals, so that the ozone oxidation effect is further improved.
In this embodiment, the reaction tank 1 is a glass vessel with a cover and about 10L, and may be replaced by a plastic container, and in order to enable the detoxification device to work normally, the water or liquid in the reaction tank should be not lower than 4L, but if the reaction tank is a smaller type gas-liquid mixing pump and a water tank, the water addition amount may be considered separately.
In one embodiment, the water purifier is installed on the water inlet pipeline 19 to avoid the granular agricultural products flowing into the gas-liquid mixing device 22 and blocking in the micro-nano bubble releaser 11.
The detoxification by utilizing the ozone technology has better detoxification effect and can not produce secondary pollution. However, a great deal of research shows that the ozone technology has certain defects, such as longer detoxification time, lower ozone oxidation rate and efficiency for solid granular products, and the like.
Based on the above, the detoxification device for aflatoxin in granular agricultural products provided by the utility model combines a gas-liquid mixing device, an ozone generator, a micro-nano bubble releaser and a reaction tank, adopts a mode of mixing ozone and micro-nano bubble water to carry out detoxification treatment on aflatoxin in solid granular agricultural products and removes aflatoxin on the surfaces of the solid granular agricultural products by absorbing and degrading or directly degrading the aflatoxin in the solid granular agricultural products by the micro-nano bubble water or the ozone micro-nano bubble water, and the characteristics of the whole solid granular agricultural products can not be influenced in the process. The detoxification device fully utilizes the comprehensive effects of high adsorptivity and high mass transfer efficiency of the large specific surface of micro-nano bubbles, high energy during bubble explosion, strong oxidation capacity of ozone and the like, obviously improves the detoxification efficiency of aflatoxin in solid granular agricultural and sideline products, shortens the detoxification time and maintains the inherent characteristics of the solid granular agricultural and sideline products.
In addition, the treatment system of the whole detoxification device belongs to circulating ozone micro-nano bubble water treatment, namely after aflatoxin in solid granular agricultural and sideline products is degraded, the used liquid in the reaction tank is circularly sucked and discharged through the gas-liquid mixing device, and then micro-nano bubbles are circularly released through the micro-nano bubble releaser, so that the recycling of resources is realized, the action time of ozone and micro-nano bubbles is long, the detoxification efficiency is further improved, and the edible safety of the agricultural and sideline products is ensured.
Referring to fig. 2, an embodiment of the present utility model further provides a detoxification method of aflatoxins in granular agricultural products, the detoxification method being performed using a detoxification device as described above, the detoxification method comprising the steps of:
step one, injecting water with preset volume into a reaction tank.
Wherein, the water injected into the reaction tank can be tap water or pure water. In order to enable the detoxification device to work normally, the water or liquid in the reaction tank should be not lower than 4L, but if the gas-liquid mixing pump and the water tank are of smaller types, the water adding amount can be considered separately.
Starting the gas-liquid mixing device, enabling water in the reaction tank to flow into the gas-liquid mixing device through the water inlet pipeline, mixing the water with preset gas, flowing to the micro-nano bubble releaser through the water outlet pipeline, and releasing micro-nano bubbles into the water through the micro-nano bubble releaser.
Specifically, the gas-liquid mixing device comprises a gas-liquid mixing pump and a water tank, water in the reaction tank can be sucked into the gas-liquid mixing pump after a power supply of the gas-liquid mixing pump is started, the preset gas and the water are mixed in a vortex mode in the gas-liquid mixing pump through adjusting the flow rate of a preset gas inlet, then flow to a micro-nano bubble releaser along a water outlet pipeline through the water tank, micro-nano bubbles are released into the water in the reaction tank through the micro-nano bubble releaser, and micro-nano bubble water is formed in the reaction tank.
Wherein the preset gas may be air or ozone.
Starting an ozone generator, and enabling ozone generated by the ozone generator to flow to an ozone aeration head through an ozone pipeline, and releasing the ozone into water in a reaction tank through the ozone aeration head and mixing the ozone with micro-nano bubbles to obtain an ozone micro-nano bubble mixed solution.
And fourthly, placing granular agricultural products containing aflatoxin into the ozone micro-nano bubble mixed solution, and removing the aflatoxin in the granular agricultural products through the ozone micro-nano bubble mixed solution.
In one embodiment, the step of adding the granular agricultural product containing aflatoxin to the ozone micro-nano bubble mixture in step four comprises:
placing granular agricultural products containing aflatoxin into 100-300 mesh gauze or woven bag, and placing the granular agricultural products packed by gauze or woven bag into ozone micro-nano bubble mixed solution, thereby preventing the granular agricultural products or fine powder agricultural products from entering into the micro-nano bubble releaser to cause blockage.
Or, the granular agricultural products containing aflatoxin can be directly put into the ozone micro-nano bubble mixed solution, and a water purifier is only required to be arranged on the water inlet pipeline and is used for preventing the granular agricultural products or fine powder agricultural products from entering the micro-nano bubble releaser to cause blockage.
The method for detoxication of aflatoxin in granular agricultural products provided by the utility model is described in detail below by way of specific examples.
Example 1
The embodiment is a detoxification method of aflatoxin in solid granular agricultural and sideline products, which is carried out under different pressure conditions, and comprises the following steps:
the first step: 8L of tap water is injected into the reaction tank;
secondly, starting a power supply of a gas-liquid mixing pump in the gas-liquid mixing device, and sucking water in the reaction tank into the gas-liquid mixing pump;
thirdly, adjusting the flow rate of air in a preset air inlet of the gas-liquid mixing pump to control the air flow rate to be 0.75L/min, and enabling the air and water to flow to the micro-nano bubble releaser along an outlet pipeline through a water tank after vortex mixing in the gas-liquid mixing pump;
fourth step: adjusting the water inlet regulating valve or the water outlet regulating valve to ensure that the number of the pressure gauge is kept between 0.2Mpa and 0.4 Mpa;
fifthly, starting an ozone generator power supply, starting an air source switch and adjusting the flow rate of an air inlet to be 5L/min, starting the ozone switch after 2-3min, releasing generated ozone into a reaction tank along an ozone pipeline through an ozone aeration head, and mixing the generated ozone with the generated micro-nano bubbles to obtain an ozone micro-nano bubble mixed solution;
sixthly, 30g of peanut meal wrapped by 200-mesh nylon gauze is put into the ozone micro-nano bubble mixed solution, and the power supply of an ozone generator and the power supply of a gas-liquid mixing pump are turned off after 30 min;
and seventhly, detecting and calculating toxins of the treated peanut meal.
With respect to the above experimental procedure, the adjustable parameters also include the amount of ozone passing through the reaction tank, the particle size of the peanut meal, the treatment time, the feed to liquid ratio, etc.
The experimental results are shown in FIG. 3, AFB 1 And AFB 2 The results of the data of the two toxins show that the greater the water outlet pressure of the gas-liquid mixing device is, the more the AFT removal rate is gradually increased, and when the pressure is 0.34Mpa, the AFT removal rate begins to be gentle, especially the AFB 1 From the viewpoints of energy saving and safety, 0.34Mpa is finally selected as the best.
Example 2
The embodiment is a detoxification method of aflatoxin in solid granular agricultural and sideline products under the condition of different particle sizes of peanut meal, comprising the following steps:
the first step: 8L of tap water is injected into the reaction tank;
secondly, starting a power supply of a gas-liquid mixing pump in the gas-liquid mixing device, and sucking water in the reaction tank into the gas-liquid mixing pump;
thirdly, adjusting the flow rate of air in a preset air inlet of the gas-liquid mixing pump to control the air flow rate to be 0.75L/min, and enabling the air and water to flow to the micro-nano bubble releaser along an outlet pipeline through a water tank after vortex mixing in the gas-liquid mixing pump;
fourth step: adjusting a water inlet adjusting valve or a water outlet adjusting valve to ensure that the number of the pressure gauge is kept at 0.34Mpa;
fifthly, starting an ozone generator power supply, starting an air source switch and adjusting the flow rate of an air inlet to be 5L/min, starting the ozone switch after 2-3min, releasing generated ozone into a reaction tank along an ozone pipeline through an ozone aeration head and mixing the ozone with micro-nano bubbles to obtain an ozone micro-nano bubble mixed solution;
step six, putting 30g of peanut meal with different particle sizes wrapped by 200-mesh nylon gauze into the ozone micro-nano bubble mixed solution, and turning off an ozone generator power supply and a gas-liquid mixing pump power supply after 30min of treatment;
and seventhly, detecting and calculating toxins of the treated peanut meal.
The experimental results are shown in fig. 4, and the results show that the smaller the particle size of the peanut meal is, the smaller the AFT removal rate tends to be increased, but the AFT removal rate is not obvious. Therefore, we speculate that the change of the particle size of the powdery peanut meal has little effect on the AFT removal rate within a certain range.
Example 3
The embodiment is a detoxification method of aflatoxin in solid granular agricultural and sideline products, which is carried out at different treatment time, and comprises the following steps:
the first step: 8L of tap water is injected into the reaction tank;
secondly, starting a power supply of a gas-liquid mixing pump in the gas-liquid mixing device, and sucking water in the reaction tank into the gas-liquid mixing pump;
thirdly, adjusting the flow rate of air in a preset air inlet of the gas-liquid mixing pump to control the air flow rate to be 0.75L/min, and enabling the air and water to flow to the micro-nano bubble releaser along an outlet pipeline through a water tank after vortex mixing in the gas-liquid mixing pump;
fourth step: adjusting a water inlet adjusting valve or a water outlet adjusting valve to ensure that the number of the pressure gauge is kept at 0.34Mpa;
fifthly, starting an ozone generator power supply, starting an air source switch and adjusting the flow rate of an air inlet to be 5L/min, starting the ozone switch after 2-3min, releasing generated ozone into a reaction tank along an ozone pipeline through an ozone aeration head and mixing the ozone with micro-nano bubbles to obtain an ozone micro-nano bubble mixed solution;
step six, putting 30g of peanut meal which is wrapped by 200-mesh nylon gauze and passes through a 10-mesh sample separating sieve into the ozone micro-nano bubble mixed solution, and turning off an ozone generator power supply and a gas-liquid mixing pump power supply after a certain time;
and seventhly, detecting and calculating toxins of the treated peanut meal.
The experimental results are shown in fig. 5, and the results show that the AFT removal rate is increased with time in a certain period of time, and can be up to more than 75%, and the calculation shows that the aflatoxin content in the peanut meal after 120min of treatment can be lower than the limit standard, and the optimal time point is selected from the viewpoint of green energy conservation, wherein the aflatoxin content in the peanut meal is 120 min.
According to the detoxification method for aflatoxin in the granular agricultural products, the detoxification treatment of aflatoxin in the solid granular agricultural products is carried out by adopting a mode of mixing ozone and micro-nano air bubble water, so that toxin on the surfaces of the solid granular agricultural products is removed or degraded, and the characteristics of the solid granular agricultural products are not affected. Because the micro-nano bubble has the characteristics of large specific surface area, high mass transfer efficiency, easiness in generating free radicals and the like, after the micro-nano bubble water is mixed with ozone, the mass transfer coefficient and the dissolution rate of the ozone can be improved, the generation of hydroxyl free radicals by the micro-nano bubble is promoted, the ozone oxidation effect can be remarkably improved, and the detoxification effect is further enhanced.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (10)
1. A detoxication device for aflatoxin in granular agricultural products is characterized by comprising a gas-liquid mixing device, an ozone generator, a micro-nano bubble releaser and a reaction tank;
the water inlet of the gas-liquid mixing device is communicated with the reaction tank through a water inlet pipeline, the water outlet of the gas-liquid mixing device is communicated with the reaction tank through a water outlet pipeline, and the ozone outlet of the ozone generator is communicated with the reaction tank through an ozone pipeline;
an ozone aeration head and a micro-nano bubble releaser are arranged at the position, close to the bottom, in the reaction tank, one end of the ozone pipeline, which is positioned in the reaction tank, is connected with the ozone aeration head, and one end of the water outlet pipeline, which is positioned in the reaction tank, is connected with the micro-nano bubble releaser;
the water in the reaction tank flows through the water inlet pipeline, flows through the gas-liquid mixing device, is mixed with preset gas, flows to the micro-nano bubble releaser through the water outlet pipeline, releases micro-nano bubbles through the micro-nano bubble releaser, and ozone generated by the ozone generator is released into the reaction tank containing the micro-nano bubbles through the ozone pipeline and the ozone aeration head.
2. The detoxification device for aflatoxin in granular agricultural products according to claim 1, wherein the gas-liquid mixing device comprises a gas-liquid mixing pump and a water tank, a water inlet of the gas-liquid mixing pump is communicated with the reaction tank through the water inlet pipeline, a water outlet of the gas-liquid mixing pump is communicated with a water inlet of the water tank, an air inlet of the gas-liquid mixing pump is communicated with an air source, and a water outlet of the water tank is communicated with the reaction tank through the water outlet pipeline.
3. The detoxification device for aflatoxin in granular agricultural products according to claim 2, wherein the water inlet end of the water inlet pipeline, the micro-nano bubble releaser and the ozone aeration head are immersed in water in the reaction tank.
4. The detoxification device for aflatoxin in granular agricultural products according to claim 2, wherein the air inlet of the gas-liquid mixing pump is filled with air or ozone, and the flow rate of the filled air or ozone is greater than 0 and less than or equal to 1.5L/min.
5. The detoxification device for aflatoxin in granular agricultural products according to claim 1, wherein the water inlet pipeline is provided with a water inlet regulating valve and a vacuum gauge, and the water outlet pipeline is provided with a water outlet regulating valve and a pressure gauge.
6. The detoxification device for aflatoxin in granular agricultural products according to claim 5, wherein the pressure gauge has a pressure in the range of 0.2Mpa to 0.4Mpa.
7. The detoxification device for aflatoxin in granular agricultural products according to claim 1, wherein the ozone generator is further provided with an air inlet, an air outlet and an ozone inlet, an air flowmeter is arranged on a pipeline between the air outlet and the ozone inlet, air enters the ozone generator through the air inlet, compressed and flows to the air flowmeter through the air outlet, and ozone generated by the ozone generator through the ozone inlet after the flow rate is regulated through the air flowmeter.
8. The detoxification device for aflatoxin in granular agricultural products according to claim 1 wherein the ozone aeration head has a particle size of 1 μm to 10 μm.
9. The detoxification device for aflatoxin in granular agricultural products according to claim 1, wherein a water purifier is provided on the water inlet pipe.
10. The detoxification device for aflatoxin in granular agricultural products according to claim 1, wherein the inner diameter of the water outlet pipeline and the water inlet pipeline is 20mm, and the inner diameter of the ozone pipeline is 6mm-8mm.
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| CN202321918128.7U CN220494219U (en) | 2023-07-19 | 2023-07-19 | A detoxification device for aflatoxin in granular agricultural product |
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| CN202321918128.7U CN220494219U (en) | 2023-07-19 | 2023-07-19 | A detoxification device for aflatoxin in granular agricultural product |
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