A pesticide packaging waste plastic biological cleaning system

Abstract

The application discloses a pesticide packaging waste plastic biological cleaning system, which comprises a collection and conveying module, the collection and conveying module comprises a collection pool, a conveyor is arranged at the bottom outlet of the collection pool, a mixing pool is arranged at the conveying end of the conveyor, an aeration device is arranged at the bottom of the mixing pool, the mixing pool is communicated with a microbial activation and dosing device, a sedimentation pool is arranged at one side of the mixing pool, a scraper is arranged on the sedimentation pool, a rinsing pool is arranged at the conveying end of the scraper, a mesh filter belt is arranged on the rinsing pool to receive the waste plastics conveyed by the scraper, the waste plastics pass through a high-pressure water jet device to be rinsed, and a temporary storage module comprises a temporary storage pool, which is arranged at the conveying end of the mesh filter belt. Through collection, conveying, biological mixing, sedimentation separation, high-pressure rinsing and recycling, the pesticide packaging waste plastics can be harmlessly cleaned, and there is no secondary pollution.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pesticide packaging waste plastic treatment, and particularly relates to a pesticide packaging waste plastic biological cleaning system. BACKGROUND

[0002] Pesticides are important materials for agricultural production and are widely used in rural areas of China. Due to the lack of a special recycling system, used pesticide packaging waste plastics are accumulated in fields and gradually spread over the years. The pesticide packaging waste plastics may contain pesticide residues, which may cause harm to the environment and human health if not properly disposed of. With the increasing awareness of environmental protection, the treatment of pesticide packaging waste plastics has become a problem to be solved. SUMMARY

[0003] In view of the above problems in the prior art, the present application provides a pesticide packaging waste plastic biological cleaning system, which solves the problem that used pesticide packaging waste plastics contain pesticide residues, which may cause harm to the environment and human health.

[0004] To achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0005] On the one hand, a pesticide packaging waste plastic biological cleaning system is provided, which comprises:

[0006] A collection and conveying module, which comprises a collection tank, and a conveyor is arranged at the bottom outlet of the collection tank;

[0007] A biological mixing and cleaning module, which comprises a mixing tank arranged at the conveying end of the conveyor, an aeration device is arranged at the bottom of the mixing tank, and the mixing tank is in communication with a microbial activation and dosing device;

[0008] A sedimentation and separation module, which comprises a sedimentation tank arranged on one side of the mixing tank, and a scraper is arranged on the sedimentation tank;

[0009] A high-pressure rinsing module, which comprises a rinsing tank arranged at the conveying end of the scraper, and a mesh filter belt is arranged on the rinsing tank to receive the waste plastics conveyed by the scraper, and the waste plastics pass through a high-pressure water jet device for rinsing;

[0010] A temporary storage module, which comprises a temporary storage tank arranged at the conveying end of the mesh filter belt.

[0011] The present application can realize the harmless cleaning of pesticide packaging waste plastics through collection, conveying, biological mixing, sedimentation and separation, high-pressure rinsing and recycling, and there is no secondary pollution. The system has good safety, reduces environmental pollution and has strong adaptability.

[0012] Further, the aeration device comprises a fan, the fan is connected with the aeration main pipe through a pipeline, the aeration main pipe is connected with the plurality of aeration branch pipes, and the aeration main pipe and the aeration branch pipes are both fixed to the bottom of the mixing pool through the saddle.

[0013] The aeration branch pipes are uniformly provided with a plurality of aeration discs.

[0014] Further, the microorganism activation and adding device comprises a microorganism activation incubator and a diaphragm metering pump, the input end of the diaphragm metering pump is connected with the microorganism activation incubator through a pipeline, and the output end of the diaphragm metering pump is connected with the mixing pool through a pipeline.

[0015] Further, the middle part of the sedimentation pool is provided with a grid partition.

[0016] Further, the bottom of the sedimentation pool is provided with a microorganism collection tank, the microorganism collection tank is provided with a microorganism backflow pump, and the microorganism backflow pump is connected with the mixing pool through a pipeline.

[0017] Further, the bottom of the rinsing pool is provided with a rinsing water collection tank, the rinsing water collection tank is provided with a rinsing water backflow pump, and the rinsing water backflow pump is connected with the mixing pool through a pipeline.

[0018] Further, the high-pressure water jet device comprises a water storage pool and a pipeline pressure pump, the input end of the pipeline pressure pump is connected with the water storage pool through a pipeline, the output end of the pipeline pressure pump is connected with the upper layer flushing branch pipe and the lower layer flushing branch pipe through pipelines respectively, the upper layer flushing branch pipe and the lower layer flushing branch pipe are provided with flushing nozzles respectively and oppositely, and the grid filter belt transports the waste plastics through the space between the upper layer flushing branch pipe and the lower layer flushing branch pipe.

[0019] Further, the dehydration device is a centrifugal dehydrator.

[0020] Further, the dehydration device is a centrifugal dehydrator.

[0021] On the other hand, a cleaning method based on the pesticide packaging waste plastic biological cleaning system is provided, which comprises the following steps:

[0022] Step S1, collecting pesticide packaging waste plastics in a collecting pool, and transferring the pesticide packaging waste plastics to a mixing pool through a conveyor at the bottom of the collecting pool;

[0023] Step S2, aerating and stirring the collected pesticide packaging waste plastics in the mixing pool through an aeration device, adding activated microorganisms into the mixing pool through a microorganism activation and adding device, and biologically mixing and cleaning the pesticide packaging waste plastics through the microorganisms to degrade pesticide residues in the pesticide packaging waste plastics, and then transferring to a sedimentation pool;

[0024] Step S3, the pesticide packaging waste plastics mixed with the microorganisms are precipitated in the sedimentation tank to separate the mixed solution of the microorganisms from the pesticide packaging waste plastics, and then the pesticide packaging waste plastics are scraped to the rinsing tank by the scraper;

[0025] Step S4, the pesticide packaging waste plastics scraped by the scraper are received by the mesh filter belt above the rinsing tank, and the pesticide packaging waste plastics are driven to pass through the high-pressure water jet device for high-pressure rinsing to remove the microorganisms remaining on the pesticide packaging waste plastics again;

[0026] Step S5, the pesticide packaging waste plastics after high-pressure rinsing are dehydrated and temporarily stored.

[0027] The present application discloses a pesticide packaging waste plastics biological cleaning system, which has the beneficial effects that:

[0028] The collected pesticide packaging waste plastics are sent into the mixing tank by the conveyor, the microorganisms are fully contacted with the pesticide residues by aeration stirring to accelerate the decomposition of the pesticide residues, then the pesticide packaging waste plastics and the microorganisms are separated by the sedimentation separation module, then the microorganisms on the separated pesticide packaging waste plastics are washed clean by the high-pressure rinsing module, and finally the cleaned pesticide packaging waste plastics are placed in the temporary storage tank. The device can realize harmless cleaning of the pesticide packaging waste plastics without secondary pollution. The system has good safety, reduces environmental pollution, has strong adaptability, can be applied to chemical industry, pharmaceutical industry and other industries, helps waste plastic treatment and resource recycling in related fields, and provides support for the development of green industry in China. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a structure schematic view of a pesticide packaging waste plastics biological cleaning system of the present application.

[0030] Figure 2 It is a structure schematic view of an aeration device of the present application.

[0031] Figure 3 It is a structure schematic view of a high-pressure water jet device of the present application.

[0032] Figure 4 It is a flowchart of a cleaning method based on the pesticide packaging waste plastics biological cleaning system of the present application.

[0033] 1, collection and conveying module; 11, collection tank; 12, conveyor;

[0034] 2, biological mixing and cleaning module; 21, mixing tank; 22, aeration device; 221, fan; 222, aeration main pipe; 223, aeration branch pipe; 224, aeration disc; 23, microorganism activation and adding device; 231, microorganism activation and culture box; 232, diaphragm metering pump;

[0035] 3. A sedimentation separation module; 31. A sedimentation tank; 32. A scraper machine; 33. A grid partition; 34. A microorganism collection tank; 35. A microorganism backflow pump;

[0036] 4. A high-pressure rinsing module; 41. A rinsing tank; 42. A mesh filter belt; 43. A high-pressure water jet device; 431. A water storage tank; 432. A pipeline pressurizing pump; 433. An upper layer flushing branch pipe; 434. A lower layer flushing branch pipe; 435. A flushing nozzle; 44. A rinsing water collection tank; 45. A rinsing water backflow pump;

[0037] 5. A temporary storage tank; 6. A dewatering device. DETAILED DESCRIPTION

[0038] The specific embodiments of the present application are described in order to facilitate the understanding of the present application for those skilled in the art, but it should be clear that the present application is not limited to the scope of the specific embodiments, and for those skilled in the art, it is obvious that various changes are within the spirit and scope of the present application as defined in the appended claims, and all the inventions using the concept of the present application are within the scope of protection.

[0039] Example 1

[0040] Reference Figure 1 A structure schematic diagram of a pesticide packaging waste plastic biological cleaning system of the present embodiment, which aims to solve the problem that the existing pesticide packaging waste plastics contain pesticide residues after use, which will cause harm to the environment and human health. The specific structure in the present embodiment will be described in detail below.

[0041] A pesticide packaging waste plastic biological cleaning system, comprising:

[0042] A collection and conveying module 1, which comprises a collection tank 11, and a conveyor 12 is arranged at the bottom outlet of the collection tank 11.

[0043] A biological mixing and cleaning module 2, which comprises a mixing tank 21 arranged at the conveying end of the conveyor 12, an aeration device 22 arranged at the bottom of the mixing tank 21, and a microorganism activation and dosing device 23 connected to the mixing tank 21.

[0044] A sedimentation separation module 3, which comprises a sedimentation tank 31 arranged at one side of the mixing tank 21, and a scraper machine 32 arranged on the sedimentation tank 31.

[0045] A high-pressure rinsing module 4 is arranged at the end of the conveying path of the scraper 32, and the high-pressure rinsing module 4 comprises a rinsing pool 41 arranged at the end of the conveying path of the scraper 32, and a mesh filter belt 42 is arranged on the rinsing pool 41 to receive the waste plastics conveyed by the scraper 32 and to pass the waste plastics through a high-pressure water jet device 43 for rinsing.

[0046] A temporary storage module is arranged at the end of the conveying path of the mesh filter belt 42, and the temporary storage module comprises a temporary storage pool 5.

[0047] In this embodiment, the pesticide packaging waste plastics collected by the collecting pool 11 are transported to the mixing pool 21 by the belt conveyor of the conveyor 12.

[0048] The mixing pool 21 is designed to be airtight to reduce the risk of harmful gas leakage and reduce the impact on the environment. The entire pool body of the mixing pool 21 is automatically controlled to realize real-time monitoring of key parameters such as temperature, pressure, and microbial quantity, ensuring stable operation of the system. In addition, the bottom of the mixing pool 21 is provided with a vent valve to facilitate periodic discharge of the gas generated in the pool to reduce the pressure and ensure safe operation of the equipment.

[0049] An airtight opening is arranged above the mixing pool 21 to receive the pesticide packaging waste plastics transported by the conveyor 12. An aeration device 22 is arranged at the bottom of the mixing pool 21, and the mixing pool 21 is connected to a microbial activation and dosing device 23. The microbial activation and dosing device 23 is used to activate microbial strains with high degradation capacity according to different pesticide residues, and then add the activated microbial strains to the mixing pool 21. Uniform and stable compressed air is provided by the aeration device 22 to ensure that the pesticide packaging waste plastics in the mixing pool are in full contact with the microorganisms and are maintained. After a mixing period of time, the mixed microbial pesticide packaging waste plastics are transported to the sedimentation pool 31. The sedimentation pool 31 is located on one side of the mixing pool 21, and the sedimentation pool 31 and the mixing pool 21 are connected to each other through a valve. The liquid level of the mixing pool 21 is higher than that of the sedimentation pool 31, so that when the valve is opened, the mixed liquid in the mixing pool 21 flows from the mixing pool 21 to the sedimentation pool 31, and then the pesticide packaging waste plastics are transferred to the sedimentation pool 31.

[0050] The pesticide packaging waste plastics and microorganisms are naturally separated under the action of gravity in the sedimentation pool 31, and then the pesticide packaging waste plastics are scraped onto the mesh filter belt 42 above the rinsing pool 41 by the scraper 32 at regular intervals. The operation time of the scraper 32 can be optimized and adjusted according to the cleaning needs.

[0051] The pesticide packaging waste plastics are driven by the grid filter belt 42 to pass through the high-pressure water jet device 43 for rinsing, and finally placed in the temporary pool 5 to complete the cleaning of the pesticide packaging waste plastics, and the device can realize harmless cleaning of the pesticide packaging waste plastics without secondary pollution. The system has good safety, reduces environmental pollution, has strong adaptability, can be applied to chemical industry, pharmaceutical industry and the like, assists waste plastic treatment and resource recycling in related fields, and provides support for green industry development in China.

[0052] Embodiment 2

[0053] Reference Figure 1 and Figure 2 , a structure schematic diagram of a pesticide packaging waste plastics biological cleaning system of the embodiment, which aims to solve the problem that the existing pesticide packaging waste plastics after use contain pesticide residues, which can cause harm to the environment and human health, based on embodiment 1, the embodiment gives a further scheme of the biological mixed cleaning module 2 and the sedimentation separation module 3, and the specific structure of the biological mixed cleaning module 2 and the sedimentation separation module 3 in the embodiment will be described in detail.

[0054] Specifically, the aeration device 22 includes a fan 221, the fan 221 is connected with an aeration main pipe 222 through a pipeline, the aeration main pipe 222 is connected with a plurality of aeration branch pipes 223, and the aeration main pipe 222 and the aeration branch pipes 223 are both fixed to the bottom of the mixing pool 21 through a saddle; a plurality of aeration discs 224 are uniformly arranged on the aeration branch pipes 223.

[0055] In the embodiment, the aeration device 22 includes the fan 221 installed outside the mixing pool 21, the fan 221 serves as a power source and is controlled by an intelligent instrument and a PLC (programmable logic controller) to provide uniform and stable compressed air through the fan 221, the compressed air is delivered to the aeration main pipe 222 fixed to the bottom of the mixing pool 21 through the pipeline and the saddle, a plurality of aeration branch pipes 223 are uniformly arranged on both sides of the aeration main pipe 222 and connected with the aeration main pipe 222, so that the aeration discs 224 on the aeration branch pipes 223 are used to aerate and stir the mixing pool 21, to ensure that the pesticide packaging waste plastics in the mixing pool 21 are fully contacted with the microorganisms and maintained, and the parameters such as aeration intensity and stirring intensity of the aeration device 22 can be optimized and adjusted according to the characteristics of different types of packaging materials to improve the cleaning effect.

[0056] Specifically, the microorganism activation and dosing device 23 includes a microorganism activation incubator 231 and a diaphragm metering pump 232, the input end of the diaphragm metering pump 232 is connected with the microorganism activation incubator 231 through a pipeline, and the output end of the diaphragm metering pump 232 is connected with the mixing pool 21 through a pipeline.

[0057] In this embodiment, the microbial activation adding device 23 is the core unit of the biological mixed cleaning module 2. For different pesticide residues, microbial strains with high degradation capacity are screened, activated in the microbial activation incubator 231, and then added to the mixing tank 21 through the diaphragm metering pump 232. The microbial and pesticide residues are fully contacted by aeration and stirring to accelerate the degradation process. After continuous stirring, the microorganisms in the mixing tank 21 rapidly reproduce to form a large amount of biofilm, further accelerating the decomposition of pesticide residues. In this process, the biofilm in the mixing tank 21 not only effectively degrades the pesticide residues, but also inhibits the growth of pathogenic bacteria, ensuring that the cleaned agricultural products meet the green environmental protection standards.

[0058] Specifically, the middle part of the sedimentation tank 31 is provided with a grid partition 33.

[0059] The bottom of the sedimentation tank 31 is provided with a microbial collection tank 34, and the microbial collection tank 34 is provided with a microbial backflow pump 35 connected with the mixing tank 21 through a pipeline.

[0060] In this embodiment, the middle part of the sedimentation tank 31 is provided with a grid partition 33, and the bottom of the sedimentation tank 31 is provided with a microbial collection tank 34. After the pesticide packaging waste plastics are transported into the sedimentation tank 31, they are naturally settled by their own gravity, and the pesticide packaging waste plastics with a smaller specific gravity float on the surface of the tank, and the ones with a larger specific gravity sink on the middle grid partition 33. The microorganisms sink to the bottom of the tank through the grid gaps of the grid partition 33, and the bottom of the tank forms a microbial collection tank 34 through a slope. The microbial collection tank 34 is provided with a microbial backflow pump 35, which backflows the microbial mixture collected in the microbial collection tank 34 to the mixing tank 21. The microbial backflow pump 35 is a frequency conversion pump, and the microbial backflow amount can be optimized and adjusted according to the cleaning needs, so as to ensure sufficient biomass in the biological mixed cleaning module 2 and ensure that the pesticide residues are fully degraded through the separation of pesticide packaging waste plastics and microorganisms and the backflow of microorganisms.

[0061] Embodiment 3

[0062] Reference Figure 1 and Figure 3 is a structural schematic diagram of a pesticide packaging waste plastic biological cleaning system of this embodiment, which aims to solve the problem that the existing pesticide packaging waste plastics after use contain pesticide residues, which can cause harm to the environment and human health. Based on embodiment 1, this embodiment gives a further scheme of the high-pressure rinsing module 4 and the temporary storage module. The specific structure of the high-pressure rinsing module 4 and the temporary storage module in this embodiment will be described in detail below.

[0063] Specifically, the bottom of the rinsing pool 41 is provided with a rinsing water collecting groove 44, and the rinsing water collecting groove 44 is provided with a rinsing water return pump 45, which is connected with the mixing pool 21 through a pipeline.

[0064] In this embodiment, the rinsing water collecting groove 44 is formed by a slope at the bottom of the rinsing pool 41, and the rinsing water return pump 45 is arranged in the rinsing water collecting groove 44. The rinsing water return pump 45 can return the rinsing water collected in the rinsing water collecting groove 44 to the mixing pool 21, thereby supplementing the water source of the biological mixing and cleaning module 2.

[0065] Specifically, the high-pressure water jet device 43 includes a water storage pool 431 and a pipeline pressurizing pump 432. The input end of the pipeline pressurizing pump 432 is connected with the water storage pool 431 through a pipeline, and the output end of the pipeline pressurizing pump 432 is connected with an upper flushing branch pipe 433 and a lower flushing branch pipe 434 through pipelines, respectively. The upper flushing branch pipe 433 and the lower flushing branch pipe 434 are respectively provided with flushing nozzles 435 facing each other, and the grid filter belt 42 conveys the waste plastics through the upper flushing branch pipe 433 and the lower flushing branch pipe 434.

[0066] In this embodiment, the water storage pool 431 can be connected with city water to supplement water storage. The pipeline pressurizing pump 432 is a high-pressure water pump, which extracts the water storage in the water storage pool 431, pressurizes the water storage, and then delivers the pressurized water storage to the upper flushing branch pipe 433 and the lower flushing branch pipe 434. The upper flushing branch pipe 433 is installed above the grid filter belt 42, the lower flushing branch pipe 434 is installed in the middle of the grid filter belt 42, and the flushing nozzles 435 are installed on the upper flushing branch pipe 433 and the lower flushing branch pipe 434. The flushing nozzles 435 adopt 1 / 8 stainless steel universal fan-shaped nozzles and are installed alternately in a dog-toothed manner. The water outlet directions of the flushing nozzles 435 are all opposite to the pesticide packaging waste plastics conveyed by the grid filter belt 42, so that the pressurized water storage can rinse the pesticide packaging waste plastics through the flushing nozzles 435, the high-pressure water jet can fully cover each surface of the pesticide packaging waste plastics, and omnidirectional cleaning without dead angle is realized. The grid filter belt 42 has excellent water permeability, so that the attached matters in the rinsing process can smoothly pass through and fall into the rinsing pool 41.

[0067] Specifically, the dehydration device 6 is arranged above the temporary storage pool 5, and the water phase outlet of the dehydration device 6 is connected with the rinsing pool 41 through a pipeline. The dehydration device 6 is a centrifugal dehydrator.

[0068] In this embodiment, the temporary storage pool 5 is arranged at the output end of the grid filter belt 42 to receive the pesticide packaging waste plastics conveyed by the grid filter belt 42. A dehydration device 6 is arranged at the upper receiving port of the temporary storage pool 5. The dehydration device 6 is a centrifugal dehydrator. Under the action of the centrifugal force of the centrifugal dehydrator, the solid and liquid are separated, which effectively removes the water attached to the surface of the pesticide packaging waste plastics. At the same time, the separated water is discharged into the rinsing pool 41 through a pipeline, which can be used again in the production line.

[0069] Embodiment 4

[0070] Reference Figures 1-4 The embodiment provides a flowchart of a cleaning method based on a pesticide packaging waste plastics biological cleaning system. The purpose is to solve the problem that the existing pesticide packaging waste plastics after use contain pesticide residues, which can cause harm to the environment and human health. The specific steps of the cleaning method in the embodiment will be described in detail below.

[0071] A cleaning method based on a pesticide packaging waste plastics biological cleaning system, comprising the following steps:

[0072] Step S1, collect the pesticide packaging waste plastics in the collection pool 11, and transfer them to the mixing pool 21 through the conveyor 12 at the bottom of the collection pool 11.

[0073] The pesticide packaging waste plastics are collected in the collection pool 11 and the pool body is sealed. Then, the electric gate at the outlet of the collection pool 11 is opened, so that the pesticide packaging waste plastics fall onto the conveyor 12, and the pesticide packaging waste plastics are transferred to the mixing pool 21 through the conveyor 12.

[0074] Step S2, aerate and stir the collected pesticide packaging waste plastics in the mixing pool 21 through the aeration device 22, and add the activated microorganisms to the mixing pool 21 through the microbial activation and dosing device 23. The pesticide packaging waste plastics are biologically mixed and cleaned by the microorganisms to degrade the pesticide residues in the pesticide packaging waste plastics, and then transferred to the sedimentation pool 31.

[0075] After the mixing pool 21 receives the pesticide packaging waste plastics transferred by the conveyor 12, the pool body of the mixing pool 21 is sealed, and then the diaphragm metering pump 232 is started to add the good microorganism strains in the microbial activation incubator 231 to the mixing pool 21 through the diaphragm metering pump 232. Then, the fan 221 of the aeration device 22 is started to aerate and stir the mixing pool 21 through the aeration disc 224, so as to ensure that the pesticide packaging waste plastics in the mixing pool 21 are in full contact with the microorganisms and maintained.

[0076] Step S3, the pesticide packaging waste plastics mixed with microorganisms are precipitated in the sedimentation tank 31, so that the mixed solution of microorganisms is separated from the pesticide packaging waste plastics, and then the pesticide packaging waste plastics are scraped to the rinsing tank 41 by the scraper 32.

[0077] After the pesticide packaging waste plastics are fully contacted with the microorganisms, the pesticide packaging waste plastics after degradation of pesticide residues are transported to the sedimentation tank 31, and are naturally settled by gravity, so that the pesticide packaging waste plastics with a smaller specific gravity than water float on the surface of the tank, and the microorganisms with a larger specific gravity than water sink on the grid partition 33 in the middle of the sedimentation tank 31, and the microorganisms sink to the bottom of the sedimentation tank 31 through the grid gaps of the grid partition 33.

[0078] At the same time, the microorganism backflow pump 35 in the microorganism collection tank 34 at the bottom of the sedimentation tank 31 backflows the microorganism mixed solution gathered in the microorganism collection tank 34 to the mixing tank 21, so as to ensure that there is enough biomass in the biological mixing tank 21.

[0079] Finally, the pesticide packaging waste plastics are scraped to the grid filter belt 42 above the rinsing tank 41 by the scraper 32 at regular time.

[0080] Step S4, the grid filter belt 42 above the rinsing tank 41 receives the pesticide packaging waste plastics scraped by the scraper 32, and drives the pesticide packaging waste plastics to pass through the high-pressure water jet device 43 for high-pressure rinsing, so as to remove the microorganisms again.

[0081] The scraper 32 scrapes the pesticide packaging waste plastics to the grid filter belt 42, and drives the pesticide packaging waste plastics to pass through the upper flushing branch pipe 433 and the lower flushing branch pipe 434 of the high-pressure water jet device 43 through the grid filter belt 42, so as to clean the pesticide packaging waste plastics by the flushing nozzles 435 in all directions without dead angle, so that the attachments in the rinsing process can be smoothly passed through the rinsing water and fall into the rinsing tank 41.

[0082] At the same time, the rinsing water backflow pump 45 in the rinsing water collection tank 44 at the bottom of the rinsing tank 41 backflows the rinsing water gathered in the rinsing water collection tank 44 to the mixing tank 21, so as to supplement the water source of the mixing tank 21.

[0083] Step S5, the pesticide packaging waste plastics after high-pressure rinsing are dehydrated and temporarily stored.

[0084] The dehydration device 6 on the temporary storage tank 5 receives the pesticide packaging waste plastics delivered by the grid filter belt 42 at the output end of the grid filter belt 42, and the dehydration device 6 is a centrifugal dehydrator, which realizes the separation of solid and liquid under the action of centrifugal force, which effectively removes the water attached to the surface of the pesticide packaging waste plastics. At the same time, the separated water is discharged into the rinsing tank 41 through the pipeline, which can be used again in the production line.

[0085] While the specific embodiments of the application have been described in connection with the appended drawings, it is to be understood that modifications and variations can be made by those skilled in the art, implementing the principles of the application, and such modifications and variations are to be included within the scope of the patent.

Claims

1. A biological cleaning system for waste plastic from pesticide packaging, characterized in that, include: The collection and conveying module (1) includes a collection pool (11) and a conveyor (12) is provided at the bottom outlet of the collection pool (11). Biological mixing cleaning module (2), the biological mixing cleaning module (2) includes a mixing tank (21) set at the end of the conveyor (12), the bottom of the mixing tank (21) is provided with an aeration device (22), and the mixing tank (21) is connected to a microbial activation and dosing device (23); The sedimentation separation module (3) includes a sedimentation tank (31) located on one side of the mixing tank (21), and a scraper conveyor (32) is provided on the sedimentation tank (31). High-pressure rinsing module (4), the high-pressure rinsing module (4) includes a rinsing tank (41) set at the end of the scraper conveyor (32), the rinsing tank (41) is provided with a mesh filter belt (42) to receive the waste plastic conveyed by the scraper conveyor (32) and to make the waste plastic pass through the high-pressure water jet device (43) for rinsing; The temporary storage module includes a temporary storage pool (5), which is located at the conveying end of the mesh filter belt (42); the high-pressure water jet device (43) includes a water storage tank (431) and a pipeline pressurization pump (432). The input end of the pipeline pressurization pump (432) is connected to the water storage tank (431) through a pipeline, and the output end of the pipeline pressurization pump (432) is connected to the upper flushing branch pipe (433) and the lower flushing branch pipe (434) through pipelines respectively. The upper flushing branch pipe (433) and the lower flushing branch pipe (434) are respectively provided with flushing nozzles (435) facing each other. The mesh filter belt (42) conveys waste plastic through the upper flushing branch pipe (433) and the lower flushing branch pipe (434); The cleaning method based on the above-mentioned biological cleaning system for pesticide packaging waste plastics includes the following steps: Step S1: Collect waste plastic from pesticide packaging in the collection pool (11) and transfer it to the mixing pool (21) via the conveyor (12) at the bottom of the collection pool (11); Step S2: In the mixing tank (21), the collected pesticide packaging waste plastic is aerated and stirred by the aeration device (22). At the same time, activated microorganisms are added to the mixing tank (21) by the microbial activation and addition device (23). The pesticide packaging waste plastic is biologically mixed and cleaned by the microorganisms to degrade the pesticide residues in the pesticide packaging waste plastic. Then, it is transferred to the sedimentation tank (31). Step S3: The pesticide packaging waste plastic mixed with microorganisms is settled in the sedimentation tank (31) to separate the microbial mixture from the pesticide packaging waste plastic. Then, the pesticide packaging waste plastic is scraped to the rinsing tank (41) by the scraper (32). Step S4: The mesh filter belt (42) above the rinsing tank (41) receives the pesticide packaging waste plastic scraped by the scraper (32) and drives the pesticide packaging waste plastic through the high-pressure water jet device (43) for high-pressure rinsing to remove the residual microorganisms on the pesticide packaging waste plastic again. Step S5: Dehydrate and temporarily store the waste plastic from pesticide packaging after high-pressure rinsing.

2. The biological cleaning system for pesticide packaging waste plastics according to claim 1, characterized in that: The aeration device (22) includes a blower (221), which is connected to the main aeration pipe (222) through a pipe. The main aeration pipe (222) is connected to multiple aeration branch pipes (223). The main aeration pipe (222) and the aeration branch pipes (223) are both fixed to the bottom of the mixing tank (21) by a saddle seat. A number of aeration discs (224) are evenly arranged on the aeration branch pipe (223).

3. The biological cleaning system for pesticide packaging waste plastics according to claim 1, characterized in that: The microbial activation dosing device (23) includes a microbial activation incubator (231) and a diaphragm metering pump (232). The input end of the diaphragm metering pump (232) is connected to the microbial activation incubator (231) through a pipe, and the output end of the diaphragm metering pump (232) is connected to the mixing tank (21) through a pipe.

4. The biological cleaning system for pesticide packaging waste plastics according to claim 1, characterized in that: A grid partition (33) is provided in the middle of the sedimentation tank (31).

5. The biological cleaning system for pesticide packaging waste plastics according to claim 1, characterized in that: The sedimentation tank (31) is provided with a microbial collection tank (34) at the bottom, and a microbial reflux pump (35) is provided in the microbial collection tank (34). The microbial reflux pump (35) is connected to the mixing tank (21) through a pipeline.

6. The biological cleaning system for pesticide packaging waste plastics according to claim 1, characterized in that: The bottom of the rinsing tank (41) is provided with a rinsing water collection tank (44), and a rinsing water return pump (45) is provided in the rinsing water collection tank (44). The rinsing water return pump (45) is connected to the mixing tank (21) through a pipe.

7. The biological cleaning system for pesticide packaging waste plastics according to claim 1, characterized in that: A dehydration device (6) is provided above the temporary storage tank (5), and the water phase outlet of the dehydration device (6) is connected to the rinsing tank (41) through a pipe.

8. The biological cleaning system for pesticide packaging waste plastics according to claim 7, characterized in that: The dehydration device (6) is a centrifugal dehydrator.

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