Recyclable pesticide packaging treatment method

Abstract

The invention belongs to the technical field of pesticide package treatment, and particularly relates to a recoverable pesticide package treatment method which comprises the following steps: S1, packaging and binding pesticide packages, conveying the pesticide packages into a treatment station through a conveying device, spraying the pesticide packages through a spraying device, and transferring the pesticide packages to a drying area for drying treatment to a preset standard after spraying; s2, the dried pesticide package is integrally packaged and transferred into a soaking pool, the soaking pool is heated to a preset standard and constant time, after pesticide residues on the surface of the pesticide package are fully dissolved, chemical treatment is conducted on the interior of the soaking pool, and the pesticide package is transferred into a cooling pool to be cooled and cleaned; through execution of the method, the purpose of integrated recovery without classifying pesticide packages can be achieved, the recovery efficiency is also improved, meanwhile, the pesticide in the pesticide packages and the packages are subjected to separation treatment, the problem that the environment is easily polluted by pesticide residues can be solved, and the problem that the pesticide residues carried in the pesticide packages are not easy to recover is also solved.

Description

Technical Field

[0001] The invention belongs to the technical field of pesticide packaging processing, and in particular relates to a recyclable pesticide packaging processing method. Background Art

[0002] In modern agriculture, the widespread use of pesticides is one of the important means to improve crop yield and quality. However, the active ingredients of pesticides usually have potential hazards to the environment and ecosystem. According to research, excessive use of pesticides and improper disposal of their packaging waste have become one of the main sources of soil and water pollution. It can be found that in modern agriculture, the widespread use of pesticides is one of the important means to improve crop yield and quality. However, the active ingredients of pesticides usually have potential hazards to the environment and ecosystem. According to research, excessive use of pesticides and improper disposal of their packaging waste have become one of the main sources of soil and water pollution.

[0003] This scheme aims to deal with the packaging of pesticides. As we all know, pesticide packaging materials mainly include plastic bottles, aluminum cans and composite materials, which are usually disposable and mostly non-degradable. According to relevant data, millions of tons of pesticide packaging waste are generated worldwide each year, and the recycling rate of these wastes is less than 20%. Among them, most of the packaging is not properly handled after being discarded, which leads to increased environmental pollution.

[0004] In addition, improper disposal of pesticide packaging waste will cause harmful chemicals to seep into the soil and water, thus affecting the ecological balance of farmland and the safety of water sources. However, most garbage recycling stations on the market today have relatively imperfect recycling systems for pesticide packaging. Many areas even lack specialized recycling facilities and effective recycling mechanisms, and consumers lack clear guidance on the classification and placement of packaging. For many reasons, the recycling rate of pesticide packaging is too low, making it difficult to form effective resource recycling.

[0005] Specifically, when recycling pesticide packaging, current recycling facilities and base stations not only need to pre-sort and process the packaging, but also need to classify the pesticide properties for processing. As a result, in the recycling process of pesticide packaging, not only a large amount of manpower sorting costs are required, but also excessive manual contact with pesticide residues can easily cause safety hazards. At the same time, the classification and processing of pesticide residues occupies too much production capacity, resulting in an overall low recycling rate.

[0006] Therefore, there is an urgent need for a recyclable pesticide packaging treatment method that can cope with different types of pesticide packaging. Summary of the invention

[0007] The purpose of the present invention is to provide a recyclable pesticide packaging processing method, which can effectively integrate and recycle pesticide packaging made of different materials, thereby greatly saving labor costs during recycling.

[0008] The technical solution adopted by the present invention is as follows:

[0009] A method for processing recyclable pesticide packaging, comprising:

[0010] S1. After the pesticide packages are packed and bundled, they are sent to the processing station via a transport device, and the spraying device sprays the pesticide packages. After spraying, they are transported to the drying area for drying to a preset standard;

[0011] S2, packing the dried pesticide packages together and transferring them to a soaking tank, heating the soaking tank to a preset standard and keeping it constant until the pesticide residues on the surface of the pesticide packages are fully dissolved, performing chemical treatment in the soaking tank, and transferring the pesticide packages to a cooling tank for cooling and cleaning;

[0012] S3, taking out the pesticide package as a whole, sending it to a conveying device, classifying the pesticide package, rolling and crushing the pesticide package after classification, and performing secondary packaging according to the classification and crushing, transporting the packaged pesticide package to a secondary processing device, melting or extruding it, and melting or extruding the pesticide package to a preset standard;

[0013] S4. Place a gas recovery device above the molten pesticide package and use it in conjunction with the melting process. Re-inject the molten pesticide package to reduce the maximum volume, then cool it, classify it according to the material, pack it for storage, and detect the surface residue after injection molding, and disinfect it to the preset standard through a disinfection device.

[0014] Furthermore, the soaking pool in S2 is a conventional heatable soaking pool, and an electrically controlled heating conduit is provided at the bottom of the heatable soaking pool. The preset standard heating time of the soaking pool in S2 is 60-90 minutes and the temperature is 70-100°C.

[0015] Furthermore, a seepage platform for supporting pesticide packaging is provided under the spray device in S1, and the seepage platform is used to leak sewage generated when the pesticide packaging is sprayed by the spray device. The sewage leaked from the seepage platform is combined and enters the soaking pool in S2 for post-use sewage treatment process.

[0016] Furthermore, the preset drying standard in S1 is based on naked eye observation until there is no obvious residual liquid on the surface and inside of the pesticide package.

[0017] Furthermore, the preset disinfection standard in S4 is that the ultraviolet light is irradiated for 2-3 hours, and the injection molded body has no surface reflective area when observed by naked eyes under ultraviolet light.

[0018] Furthermore, the chemical treatment in S2 specifically includes:

[0019] S2-1: Place the soaking pool in the sun, or cover the soaking pool with a row of ultraviolet lamps, irradiate the soaking pool vertically, add titanium dioxide, and a reaction will occur. The reaction formula is TiO2+hv→e - +h + In the reaction cell, photons excite titanium dioxide to produce electrons and holes, and the pesticide degradation reaction is C n H m X+O2→CO2+H2O+other products, then detect the internal components of the immersion tank, add the corresponding neutralizer, wait 1-2 hours, detect the internal components of the immersion tank again, and complete the pesticide residue treatment in the immersion tank.

[0020] Furthermore, the preset standard for melt extrusion in S3 is that the corresponding plastic is extruded, and the pesticide packaging after extrusion cannot be broken, has no protrusions visually, and is a regular rectangle; the corresponding metal packaging is melted, and the pesticide packaging can be injection molded after melting, and has a regular rectangle after injection molding, and has no obvious protrusions visually on the surface.

[0021] Furthermore, the conveying device in S3 is provided with a screening device for screening pesticide packaging, so as to screen metals, plastics and glass.

[0022] The technical effects achieved by the present invention are:

[0023] By implementing this method, the purpose of integrated recycling of pesticide packaging can be achieved without the need for classification, which saves the cost of labor for packaging and improves the recycling efficiency. At the same time, the pesticide and packaging in the pesticide packaging are separated and processed, which can not only solve the problem that pesticide residues easily pollute the environment, but also solve the problem that pesticide residues in pesticide packaging are difficult to recycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall process of the present invention. DETAILED DESCRIPTION

[0025] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with embodiments. It should be understood that the following text is only used to describe one or several specific embodiments of the present invention, and does not strictly limit the scope of protection of the specific claims of the present invention.

[0026] Example:

[0027] like Figure 1 As shown, a method for processing recyclable pesticide packaging includes:

[0028] First, the pesticide packages are packed and bundled, and then transported to the processing station through the transport device. The spraying device sprays the pesticide packages, and then they are transported to the drying area for drying to the preset standard.

[0029] In the above, the pre-execution conditions of integrated packaging ensure that the execution personnel outside can quickly summarize, stack and transport the pesticide packaging, which saves the time of preliminary screening and avoids the problem of non-professionals over-packing due to classification problems, which may lead to safety hazards when they come into contact with pesticide packaging.

[0030] Secondly, the dried pesticide packages are packed together and transferred to a soaking tank, which is heated to a preset standard and kept constant until the pesticide residues on the surface of the pesticide packages are fully dissolved. The inside of the soaking tank is chemically treated and the pesticide packages are transferred to a cooling tank for cooling and cleaning.

[0031] In the above, it should be noted that after the immersion tank has processed a round of pesticide packaging, the pesticide concentration in the tank should be tested immediately. If the pesticide concentration inside the immersion tank exceeds 2%, the water source in the tank needs to be replaced directly. However, considering the overall water purification cost, on the basis of the pesticide concentration not exceeding 8%, clean water can be added to the tank according to the size of the immersion tank for stirring and neutralization, thereby saving the use cost of the device to a certain extent.

[0032] Then, the pesticide packages are fished out as a whole and sent to a conveying device to classify the pesticide packages. After classification, the pesticide packages are crushed by rollers, and secondary packaging is performed according to the classification and crushing. The packaged pesticide packages are transported to a secondary processing device for melting or extrusion, and the pesticide packages are melted or extruded to a preset standard;

[0033] Finally, a gas recovery device is placed above the molten pesticide package and used in conjunction with the melting process. The molten pesticide package is re-injected to reduce the maximum volume, and then cooled, classified according to the material, packaged and stored, and the surface residue after injection molding is tested and disinfected to the preset standard through a disinfection device.

[0034] like Figure 1 As shown, the soaking pool in S2 is a conventional heatable soaking pool, and an electrically controlled heating conduit is provided at the bottom of the heatable soaking pool. The preset standard heating time of the soaking pool in S2 is 60-90 minutes and the temperature is 70-100°C.

[0035] In this embodiment, the solubility of pesticides in hot water usually increases with increasing temperature. The specific temperature range varies depending on different types of pesticides. However, in general, many pesticides are more easily dissolved in hot water at 50°C to 70°C. However, dissolution alone is not enough. A large number of pesticide packages may carry a large amount of residues. If the pesticides are dissolved in the soaking tank, the cleaning effect of the pesticide packages cannot be achieved at all. Therefore, the temperature is set at 70-100°C. Although most pesticides may begin to degrade when the temperature exceeds 60°C, the specific degradation temperature should be set between 70°C and 100°C for safety reasons. At this time, the high temperature accelerates the movement of molecules, thereby increasing the frequency of collisions between molecules, resulting in the breaking of molecular bonds, and then causing the active ingredients in the pesticide residues to degrade or convert into ineffective substances. For details, refer to Rate=k[A]. n [B] m , where k is the reaction rate constant, [A] and [B] are the concentrations of the reactants, n and m are the reaction orders, and according to the Arrheniu equation, an increase in temperature generally leads to an increase in the reaction rate constant k, thereby accelerating the reaction rate and degradation process. However, different types of pesticides have different chemical structures and stabilities, and some may still maintain a certain activity at 100°C, so subsequent cleaning is still required.

[0036] like Figure 1 As shown, a seepage platform for supporting pesticide packaging is provided under the spraying device in S1. The seepage platform is used to seep the sewage generated when the pesticide packaging is sprayed by the spraying device. The sewage seeping from the seepage platform is combined and enters the soaking pool in S2 for post-use sewage treatment process.

[0037] In this embodiment, the sewage treatment process after the use of the soaking pool is carried out in accordance with the "Water Pollution Prevention and Control Law" and the "Pesticide Residue Limit Standard". Common sewage treatment methods such as chemical precipitation and flotation methods can be used, or biological treatment methods and advanced oxidation can be used for treatment.

[0038] like Figure 1 As shown, the preset drying standard in S1 is based on visual observation until there is no obvious residual liquid on the surface and inside of the pesticide packaging.

[0039] In this embodiment, by such an arrangement, the subsequent cleaning burden on the pesticide packaging is reduced as much as possible. It can be seen that during the use of the overall method, although the pesticide and the packaging are separated, the subsequent processing of the packaging is relatively simple, while the processing of the pesticide itself is still very complicated. Therefore, in the initial stage, it is the top priority of this solution to process and recycle the packaging as much as possible so that the pesticide packaging can be recycled and reused normally.

[0040] like Figure 1As shown, the preset disinfection standard in S4 is 2-3 hours of ultraviolet light irradiation, and the injection molded body has no surface reflective area under ultraviolet light observation by naked eye.

[0041] In this embodiment, the pesticide residues on the surface are preferentially destroyed by setting the ultraviolet light, which mainly destroys the chemical bonds in the pesticide molecules. The ultraviolet light irradiation can cause the structure to change or decompose, thereby further reducing its toxicity. Specifically, refer to A+hv→B+C, where A represents the reactant, such as a certain pesticide; hv is the photon energy, h is the Planck constant, v is the frequency of light, B is one of the products generated by photolysis, and C is the other product generated by photolysis. For the photolysis reaction, the reaction rate can be described by the following formula, that is, Rate = k·[C]·I, where Rate is the reaction rate in the photolysis reaction, k is the rate constant of the photolysis reaction, which depends on the properties of the pesticide and environmental conditions, [C] is the pesticide concentration, and I is the ultraviolet intensity. After calculation, it can be known that, taking 5t of water as an example, when the pesticide residue does not exceed 5%, the optimal irradiation time is 2h. Therefore, the preset irradiation time should be 3h. In order to express the process of the reaction more vividly, pesticides are taken as an example, specifically referring to Pesticide+hv→Degraded Product 1+DegradedProduct 2. In this process, the pesticide molecules undergo photolysis under ultraviolet irradiation to generate one or more degradation products, and the properties of these products are usually less toxic than the original pesticides.

[0042] like Figure 1 As shown, the chemical treatment in S2 specifically includes:

[0043] S2-1: Place the soaking pool in the sun, or cover the soaking pool with a row of ultraviolet lamps, irradiate the soaking pool vertically, add titanium dioxide, and a reaction will occur. The reaction formula is TiO2+hv→e - +h + In the reaction cell, photons excite titanium dioxide to produce electrons and holes, and the pesticide degradation reaction is C n H m X+O2→CO2+H2O+other products, then detect the internal components of the immersion tank, add the corresponding neutralizer, wait 1-2 hours, detect the internal components of the immersion tank again, and complete the pesticide residue treatment in the immersion tank.

[0044] In this embodiment, during the photocatalytic process, it can be found that electrons can reduce water or oxygen molecules to generate hydroxyl radicals or superoxide anions, wherein these active substances have strong oxidizing ability, and holes can oxidize organic matter to generate free radicals or other active intermediates. Through the above reaction, the photocatalytic redox process can effectively degrade organic pollutants in water, including pesticide components. In the photocatalytic reaction, although the specific reaction equation varies depending on the pollutants and catalysts being treated, it can generally be expressed as: Organic Polutant+hv→

[0045] Decomposition Products, where the generation of electrons and holes under the reaction of the catalyst can be expressed as: TiO2+hv→e - +h + , Subsequently, the electrons and holes participate in subsequent reactions to degrade organic matter.

[0046] like Figure 1 As shown, the preset standard for melt extrusion in S3 is that the corresponding plastic is extruded, and the pesticide packaging after extrusion cannot be broken, has no protrusions visually, and is a regular rectangle; the corresponding metal packaging is melted, and the pesticide packaging can be injection molded after melting, and has a regular rectangle after injection molding, and has no obvious protrusions on the surface visually. The conveying device in S3 is provided with a screening device for screening the pesticide packaging, which is used to screen metals, plastics, and glass.

[0047] In this embodiment, it should be noted that the pesticide packaging made of glass does not need to participate in this process, and can directly proceed to the final inspection step. Due to the particularity of glass products, they cannot be packaged and processed under the premise of saving space. Moreover, dissolving glass is additional work for general recycling stations, even for specific recycling stations, and there are uncertain technical expenses and certain safety hazards. Therefore, when the implementation plan is scheduled, the glass bottles can only be cleaned without subsequent processing steps.

[0048] The above is only a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the art unless otherwise specified and limited.

Claims

1. A method for processing recyclable pesticide packaging, characterized in that: include: S1. After the pesticide packages are packed and bundled, they are sent to the processing station via a transport device, and the spraying device sprays the pesticide packages. After spraying, they are transported to the drying area for drying to a preset standard; S2, packing the dried pesticide packages together and transferring them to a soaking tank, heating the soaking tank to a preset standard and keeping it constant until the pesticide residues on the surface of the pesticide packages are fully dissolved, performing chemical treatment in the soaking tank, and transferring the pesticide packages to a cooling tank for cooling and cleaning; S3, taking out the pesticide package as a whole, sending it to a conveying device, classifying the pesticide package, rolling and crushing the pesticide package after classification, and performing secondary packaging according to the classification and crushing, transporting the packaged pesticide package to a secondary processing device, melting or extruding it, and melting or extruding the pesticide package to a preset standard; S4. Place a gas recovery device above the molten pesticide package and use it in conjunction with the melting process. Re-inject the molten pesticide package to reduce the maximum volume, then cool it, classify it according to the material, pack it for storage, and detect the surface residue after injection molding, and disinfect it to the preset standard through a disinfection device.

2. A method for processing recyclable pesticide packaging according to claim 1, characterized in that: The soaking pool in S2 is a heatable soaking pool, and an electrically controlled heating conduit is provided at the bottom of the heatable soaking pool. The preset standard heating time of the soaking pool in S2 is 60-90 minutes and the temperature is 70-100°C.

3. A method for processing recyclable pesticide packaging according to claim 1, characterized in that: A seepage platform for supporting pesticide packaging is provided below the spray device in S1. The seepage platform is used to seep sewage generated when the pesticide packaging is sprayed by the spray device. The sewage seeped from the seepage platform is combined and enters the soaking pool in S2 for post-use sewage treatment process.

4. A method for processing recyclable pesticide packaging according to claim 1, characterized in that: The preset drying standard in S1 is based on naked eye observation until there is no obvious residual liquid on the surface and inside of the pesticide package.

5. The method for processing recyclable pesticide packaging according to claim 1, characterized in that: The preset disinfection standard in S4 is that the ultraviolet light is irradiated for 2-3 hours, and the injection molded body has no surface reflective area under ultraviolet light observation by naked eye.

6. A method for processing recyclable pesticide packaging according to claim 1, characterized in that: The chemical treatment in S2 specifically includes: Place the soaking pool in the sun, or cover the soaking pool with a row of ultraviolet lamps, irradiate the soaking pool vertically, add titanium dioxide, and a reaction will occur. The reaction formula is TiO2+hv→e - +h + In the reaction cell, photons excite titanium dioxide to produce electrons and holes, and the pesticide degradation reaction is C n H m X+O2→CO2+H2O, then detect the internal components of the soaking tank, add the corresponding neutralizer, wait 1-2 hours, detect the internal components of the soaking tank again, and complete the pesticide residue treatment in the soaking tank.

7. A method for processing recyclable pesticide packaging according to claim 1, characterized in that: The preset standard of melt extrusion in S3 is that the corresponding plastic is extruded, and the pesticide packaging after extrusion cannot be broken, has no protrusions visually, and is a regular rectangle; the corresponding metal packaging is melted, and the pesticide packaging can be injection molded after melting, and has a regular rectangle after injection molding, and has no obvious protrusions visually on the surface.

8. The method for processing recyclable pesticide packaging according to claim 1, characterized in that: The conveying device in S3 is provided with a screening device for screening pesticide packages, and is used to screen metals, plastics and glass.

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