Multistage water-saving cleaning method and device for beef pretreatment

Abstract

The invention discloses a multistage water-saving cleaning method and device for beef pretreatment. The multi-stage water-saving cleaning method for beef pretreatment comprises the following steps: performing foreign matter detection and preliminary impurity removal on beef; a three-stage countercurrent cleaning process is adopted, and first-stage physical cleaning, second-stage biochemical treatment and third-stage sterile rinsing are sequentially executed; and carrying out stage treatment and cyclic utilization on the water body subjected to stage cleaning, namely supplementing third-stage effluent to the second stage, supplementing second-stage effluent to the first stage, and treating first-stage effluent for cyclic utilization. According to the technical scheme, impurity organisms on the surface of beef are removed by adopting a countercurrent cleaning and intelligent water regeneration system, gradient utilization of beef pretreatment water resources is realized, the water circulation rate is accurately regulated and controlled by adopting a dynamic water treatment technology, the energy consumption cost is effectively reduced, and green, environment-friendly and economic benefits are fully shown.

Description

Technical Field

[0001] The present invention relates to the technical field of food processing, and particularly to a multi-stage water-saving cleaning method and device for beef pretreatment. Background Art

[0002] In the field of beef processing, the pre-cleaning process is the core link to ensure food safety and quality. Traditional cleaning processes mostly adopt single flushing or simple multi-stage series flushing modes, which have significant technical bottlenecks. First of all, the existing technology generally adopts a one-way flowing water operation, and the cleaning water is directly discharged after being used once, and the water consumption per unit of beef is as high as 8-10 L / kg, and the problem of water resource waste is prominent in large-scale production. Secondly, the simple superposition of conventional physical scouring and chemical cleaning is difficult to balance the cleaning efficiency and food safety requirements: high-pressure water jetting is likely to cause damage to meat fibers, and excessive reliance on surfactants may lead to the risk of chemical residues. In addition, most of the existing water circulation technologies stay at the primary stage of sedimentation and filtration, and the quality of recycled water is unstable, which cannot meet the differentiated water quality requirements of multi-stage cleaning, resulting in limited circulation times (usually ≤ 1.5 times). There are structural problems in the cascade utilization and intelligent regulation of water resources in the existing technology. On the one hand, the cleaning process and the water treatment system are separated, resulting in the inefficient use of high-purity reverse osmosis water for primary flushing, and the waste water containing impurities is not regenerated in stages. On the other hand, traditional equipment lacks dynamic response capabilities and cannot adjust water flow parameters in real time according to the beef conveying volume and dirt load, resulting in excessive consumption of energy and chemicals. For example, a fixed-frequency ultrasonic generator has insufficient cavitation effect under low-load conditions, and may damage the meat quality due to excessive cavitation at high loads. In addition, the single design of the conveyor belt structure results in a limited cleaning contact area, incomplete removal of residues, and the need for repeated flushing, which aggravates the water consumption burden. These problems together expose the technical gap in the coordinated optimization of water-energy-efficiency in the existing technology and become the key obstacles restricting the green upgrade of the industry. How to properly solve the above problems has become an urgent issue in the industry. Summary of the Invention

[0003] The present invention provides a multi-stage water-saving cleaning method and device for beef pretreatment, which can greatly reduce the water consumption per unit of beef, improve the cleaning efficiency, ensure food safety, and save energy and protect the environment.

[0004] According to the first aspect of the present invention, there is provided a multi-stage water-saving cleaning method for beef pretreatment, the multi-stage water-saving cleaning method for beef pretreatment including:

[0005] Performing foreign object detection and preliminary impurity removal on beef;

[0006] Adopting a three-stage countercurrent cleaning process, and sequentially performing primary physical cleaning, secondary biochemical treatment, and tertiary aseptic rinsing;

[0007] The water bodies after cleaning at all levels are subjected to hierarchical treatment and recycled, including supplementing the tertiary effluent to the secondary level, the secondary effluent to the primary level, and recycling the treated primary effluent.

[0008] In one embodiment, the foreign object detection and preliminary impurity removal of beef include:

[0009] Scanning the beef with an X-ray foreign object detection device to identify metal and non-metal impurities;

[0010] Removing the loose surface impurities by mechanical vibration screening, with a vibration frequency of 20 - 30 Hz;

[0011] Performing pre-blowing treatment with an air knife device, with an air knife pressure of 0.3 - 0.5 MPa, to remove the adhering impurities.

[0012] In one embodiment, the three-stage countercurrent cleaning process includes:

[0013] The primary physical cleaning uses a high-pressure fan-shaped nozzle array with a pressure range of 0.8 - 1.2 MPa, and is combined with a vortex diversion groove for surface scouring, with a cleaning duration of 60 s;

[0014] The secondary biochemical treatment uses micro-bubbles containing a food-grade surfactant, with the pH value controlled at 6.5 - 7.2, and 40 kHz ultrasonic treatment is applied, with a cleaning duration of 45 s;

[0015] The tertiary aseptic rinsing uses a composite rinse of ozone water and reverse osmosis pure water, with an ozone concentration of 0.5 - 1 ppm, and a cleaning duration of 30 s.

[0016] In one embodiment, the hierarchical treatment and recycling of the water bodies after cleaning at all levels include:

[0017] The effluent from the tertiary cleaning area is filtered by a ceramic membrane and then supplemented to the secondary cleaning area;

[0018] The effluent from the secondary cleaning area is supplemented to the primary cleaning area after removing particles larger than 100 μm by a hydrocyclone sedimentation device;

[0019] The effluent from the primary cleaning area is stored in the recycled water tank after coagulation sedimentation and ultraviolet disinfection.

[0020] In one embodiment, the hierarchical treatment and recycling of the water bodies after cleaning at all levels further include:

[0021] Performing subsequent treatment on the sewage, and sequentially performing any one or more of hydrocyclone slag removal, ceramic membrane filtration, electrochemical disinfection, and ice-water heat exchange;

[0022] The PLC-based fuzzy PID controller dynamically adjusts the water circulation rate (200 - 800 L / min) and the chemical dosage (±5% accuracy) according to the beef conveying volume;

[0023] The weighing sensor is used to monitor the cleaning load in real time, and the pulse injection mode of the nozzle group (interval 0.5 - 2 s) is adjusted in linkage.

[0024] In one embodiment, it further includes:

[0025] During the cleaning process, the surface microstructure of the wavy conveyor belt is used to increase the contact area, and the self-cleaning scraper is used to periodically remove residues;

[0026] The turbidity, TDS, and ORP values are monitored in real time through the water quality sensor network, and the ozone concentration and the reverse osmosis water ratio are feedback-adjusted.

[0027] According to the second aspect of the present invention, a multi-stage water-saving cleaning device for beef pretreatment is provided, including:

[0028] A pretreatment module for detecting foreign objects in beef and removing preliminary impurities;

[0029] A cleaning module for adopting a three-stage countercurrent cleaning process to sequentially perform primary physical cleaning, secondary biochemical treatment, and tertiary aseptic rinsing;

[0030] A water circulation module for performing hierarchical treatment and recycling of the water bodies after each stage of cleaning, including supplementing the tertiary effluent to the secondary, the secondary effluent to the primary, and recycling the primary effluent after treatment.

[0031] According to the third aspect of the present invention, an electronic device is provided, and the electronic device includes: a communication interface, a processor, and a memory;

[0032] Wherein, the memory is used to store program instructions, and when the program instructions are executed by the processor communicatively connected to the memory through the communication interface, any of the above-mentioned multi-stage water-saving cleaning methods for beef pretreatment is implemented.

[0033] According to the fourth aspect of the present invention, a computer-readable storage medium is provided, and computer program instructions are stored on the computer-readable storage medium. When the computer program instructions are executed by a computer (for example, the processor in the computer), any of the above-mentioned multi-stage water-saving cleaning methods for beef pretreatment is implemented.

[0034] In summary, the present invention provides a multi - level water - saving cleaning method and device for beef pretreatment. The method includes: detecting foreign objects in beef and removing preliminary impurities; adopting a three - stage counter - current cleaning process, sequentially performing primary physical cleaning, secondary biochemical treatment, and tertiary aseptic rinsing; performing hierarchical treatment and recycling of the water bodies after each level of cleaning, including supplementing the tertiary effluent to the secondary level, the secondary effluent to the primary level, and recycling the primary effluent after treatment. The technical solution of this application uses counter - current cleaning and an intelligent water regeneration system to remove impurities and organisms on the beef surface, realizes the cascaded utilization of water resources for beef pretreatment, uses dynamic water treatment technology to precisely control the water circulation rate, effectively reduces energy consumption costs, and fully demonstrates the green environmental protection and economic benefits.

[0035] Other features and advantages of the present invention will be described in the following specification, and, in part, will be obvious from the specification, or will be understood by implementing the present invention. The objectives and other advantages of the present invention can be achieved and obtained by the structures specifically pointed out in the written specification and drawings.

[0036] The technical solution of the present invention will be further described in detail below through the drawings and embodiments. Description of the Drawings

[0037] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0038] Figure 1 It is a flowchart of a multi - level water - saving cleaning method for beef pretreatment provided by an embodiment of the present invention;

[0039] Figure 2 It is a structural diagram of a multi - level water - saving cleaning device for beef pretreatment provided by an embodiment of the present invention;

[0040] Figure 3 It is a structural diagram of an electronic device provided by an embodiment of the present invention. Detailed Embodiments

[0041] The features and exemplary embodiments of various aspects of the present application will be described in detail below. To make the objectives, technical solutions, and advantages of the present application clearer and more understandable, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by showing examples of the present application.

[0042] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, the elements defined by the statement "comprising..." do not exclude the presence of additional identical elements in the process, method, article or device comprising the said elements.

[0043] As Figure 1 shown, the present invention provides a multi-stage water-saving cleaning method for beef pretreatment, and the multi-stage water-saving cleaning method for beef pretreatment includes:

[0044] In step S11, foreign object detection and preliminary impurity removal are performed on the beef.

[0045] In step S12, a three-stage countercurrent cleaning process is adopted, and primary physical cleaning, secondary biochemical treatment, and tertiary aseptic rinsing are sequentially performed.

[0046] In step S13, the water bodies after cleaning at each stage are classified and recycled, including the tertiary effluent being supplemented to the secondary stage, the secondary effluent being supplemented to the primary stage, and the primary effluent being recycled after treatment.

[0047] In one embodiment, a multi-stage water-saving cleaning method for beef pretreatment is involved, which realizes efficient cleaning and efficient utilization of water resources through systematic foreign object detection, multi-stage cleaning process, and water cycle treatment technology.

[0048] Before the beef enters the cleaning line, the whole piece of beef is first scanned from multiple angles by an X-ray foreign object detection device (such as a dual-energy X-ray detector). This device identifies metal impurities (such as iron filings, steel needles) and non-metal impurities (such as broken bones, plastic pieces) based on density differences, and the detection accuracy can reach 0.3 mm. The detection results generate a three-dimensional thermal map through an image processing system. After locating the coordinates of the impurities, a robotic arm performs precise removal operations. The beef enters the vibrating screening module after being detected. The screening equipment uses a multi-layer vibrating screen made of stainless steel (aperture 5 mm × 5 mm), with the vibration frequency set at 20 - 30 Hz and the amplitude at 2 - 3 mm. During the vibration process, loose impurities attached to the surface (such as hair, sediment) fall through the sieve holes into the collection tank. At the same time, the surface of the sieve body is designed as a wavy structure to enhance the tumbling effect of the beef and improve the impurity separation efficiency. The screened beef enters the air knife area. The air knife device adopts an annular array layout, with a group of high-pressure nozzles set every 10 cm. The compressed air pressure is 0.3 - 0.5 MPa, and the air flow velocity reaches 20 m / s. The air knife sweeps the beef surface at a 45° oblique angle to mainly remove adherent impurities (such as blood stains, fat debris). The impurities after purging are collected through a negative pressure dust collection system to avoid secondary pollution.

[0049] Before the beef enters the continuous cleaning process, the raw materials must be fully pretreated to ensure the cleaning effect of subsequent processes. The present invention adopts multi-level pretreatment measures, mainly including X-ray foreign object detection, mechanical vibration screening, and air knife pre-purging treatment. X-ray foreign object detection uses a dual-energy X-ray detector to scan the beef comprehensively, and can detect metal and non-metal impurities inside and on the surface of the beef. The detection device obtains the transmission images of the beef at different energies and generates a three-dimensional thermal map with the help of image processing algorithms, thereby accurately locating the positions of the impurities. This technology not only ensures the detection accuracy but also enables online non-destructive detection on a high-speed production line, providing a basis for subsequent automatic diversion and manual review. Mechanical vibration screening uses high-frequency vibration to separate the loose impurities on the surface of the beef, and collects the impurities into the lower collection tank through a multi-layer stainless steel sieve mesh (the aperture is designed as 5 mm × 5 mm). The vibration parameters of the screening equipment are optimized, which not only ensures the full peeling of the impurities but also does not damage the surface of the beef. Air knife pre-purging uses high-pressure airflows to impact the beef from multiple angles, mainly used to remove the fine pollutants that are difficult to remove by screening due to surface structure or strong adhesion. This process is achieved by setting high-pressure air knives in an annular array layout, with a pressure of about 0.3 - 0.5 MPa and an air flow velocity of 20 m / s, and purging the beef surface at a 45° oblique angle to ensure that the beef reaches the predetermined cleanliness standard before entering the cleaning unit.

[0050] Primary physical cleaning (high-pressure flushing stage): Beef enters the primary cleaning area, which is equipped with a high-pressure fan-shaped nozzle array (made of 316L stainless steel). The nozzle spacing is 15 cm, the spraying angle is 60°, and the pressure range is 0.8 - 1.2 MPa. A vortex guide groove is designed in the cleaning tank, and the tank body has a spiral structure. The water flow forms a vortex under the action of centrifugal force to wash away the residual impurities in the gaps on the beef surface. The cleaning duration is 60 s, and the water temperature is controlled at 10 - 15 °C to inhibit the reproduction of microorganisms. Secondary biochemical treatment (synergy of microbubbles and ultrasonic waves): The secondary cleaning area uses microbubbly water containing a food-grade surfactant (such as sodium dodecyl sulfate, concentration 0.1% - 0.3%). The microbubble generator generates bubbles with a diameter of 50 - 200 μm through the Venturi effect, and local high-pressure impacts on dirt are generated when the bubbles burst. At the same time, a 40 kHz ultrasonic transducer is installed at the bottom of the tank to peel off deep contaminants through the cavitation effect. The pH value of the cleaning solution is maintained at 6.5 - 7.2 through an automatic dosing system, and the treatment duration is 45 s. Tertiary aseptic rinsing (combination of ozone water and reverse osmosis pure water): The tertiary cleaning area uses a mixed solution of ozone water (ozone concentration 0.5 - 1 ppm) and reverse osmosis pure water (conductivity ≤ 10 μS / cm) for final rinsing. The ozone water is prepared in real time through a jet mixer, and the proportion of reverse osmosis pure water is 70% - 80%. The rinsing duration is 30 s, and the tank body is sealed to prevent ozone from escaping. The total number of microorganisms on the surface of the rinsed beef is reduced to ≤ 100 CFU / g.

[0051] In the physical cleaning stage, beef enters the high-pressure cleaning tank, and a high-pressure fan-shaped nozzle array is used to wash the surface of the beef. The nozzle design has undergone strict calculations, and its spraying angle, spacing, and pulse mode have all been optimized to ensure that the water flow can cover the entire surface of the beef during spraying. There is a vortex guide structure in the tank, which causes the water flow to form vortices locally, and the larger particulate pollutants attached to the surface of the beef are peeled off by shear force. To ensure the hydrodynamic effect, engineers use an incompressible fluid dynamics model for numerical simulation to precisely adjust the parameters of the nozzles and the guide trough, thereby achieving the optimal washing effect. Physical cleaning usually lasts about 60 seconds, during which the water temperature is controlled between 10-15°C, which can not only improve the washing efficiency but also inhibit the growth of microorganisms and ensure the quality of beef. The biochemical treatment process targets the fine pollutants inside and on the surface of the beef and achieves deep cleaning through the dual effects of chemistry and physics. Here, a food-grade surfactant (such as sodium dodecyl sulfate, with a concentration controlled between 0.1%-0.3%) is pre-added to the cleaning water, and a microbubble generator uses the Venturi effect to generate microbubbles with diameters in the range of 50-200 μm. The microbubbles can penetrate into the beef fibers and wrap and dissolve the pollutants through the action of the surfactant. At the same time, 40 kHz ultrasonic transducers installed in the tank generate ultrasonic vibrations, which cause the microbubbles to undergo cavitation effects, releasing local high-temperature and high-pressure energy to accelerate the rupture and shedding of pollutants. The biochemical treatment process lasts about 45 seconds, during which the system maintains the pH value of the cleaning solution within the range of 6.5-7.2 through an automatic adjustment device to balance the cleaning effect and the quality of beef. The aseptic rinsing stage aims to thoroughly remove the surfactants and microorganisms that may remain in the previous two stages. This stage uses a combined rinsing method of ozone water and reverse osmosis pure water. The ozone water is mixed with the reverse osmosis pure water at a ratio of 70%-80% through an online jet mixer to achieve the final rinse of the beef surface. Ozone has extremely strong oxidizing properties and can decompose organic pollutants and kill bacteria in a very short time; the reverse osmosis pure water ensures high-purity water quality during the rinsing process and avoids secondary pollution. Aseptic rinsing is usually controlled within 30 seconds. After the rinsing is completed, the total number of microorganisms on the beef surface is reduced to ≤100 CFU / g, fully meeting the food safety standards.

[0052] The effluent from the tertiary cleaning area is filtered by a ceramic membrane filtration device (pore size 0.1 μm) to remove suspended solids and bacteria, and then replenished to the secondary cleaning area. The ceramic membrane adopts a cross-flow filtration mode, and the flux is controlled between 50-80 L / (m 2· h), the backwashing cycle is once every 2 hours, and the backwashing pressure is 0.3 MPa. The secondary effluent removes particles larger than 100 μm through a hydrocyclone sedimentation device (diameter 500 mm, rotation speed 1500 rpm). A conical sedimentation tank is set at the bottom of the hydrocyclone, and the separated sludge is discharged through a screw pump, and the supernatant is supplemented to the primary cleaning area. The primary effluent first enters the coagulation sedimentation tank, and polyaluminum chloride (PAC, 10 - 20 mg / L) and polyacrylamide (PAM, 0.5 - 1 mg / L) are added, and the sedimentation time is 30 min. Subsequently, it is sterilized by an ultraviolet disinfection module (wavelength 254 nm, dose 40 mJ / cm 2 ) and finally stored in the reclaimed water tank, and the water quality meets the reuse requirements of the "Discharge Standard of Water Pollutants for the Slaughter and Meat Processing Industry (Third Draft for Soliciting Opinions)".

[0053] The water circulation treatment system is an important part of the present invention. Through hierarchical collection, primary purification, advanced treatment and intelligent control, multi-stage reuse of wastewater is achieved, and the effect of water conservation and environmental protection is achieved. The wastewater in the tertiary cleaning area contains more suspended particles and is first treated by a ceramic membrane filtration module. The ceramic membrane adopts a cross-flow filtration mode with a pore size of 0.1 μm to effectively intercept most of the suspended substances. The treated water is supplemented to the secondary cleaning area. The wastewater in the secondary cleaning area contains chemical agent residues and fine particles, and is subjected to fractional sedimentation through a hydrocyclone sedimentation device. Particles larger than 100 μm are separated by centrifugal force, and the supernatant is supplemented to the primary cleaning area. The effluent from the primary cleaning area is subjected to coagulation sedimentation and ultraviolet disinfection treatment, and then enters the advanced purification module, and measures such as electrochemical disinfection and ice-water heat exchange are adopted to further improve the water quality. After meeting the national standard requirements, it is stored in the reclaimed water tank. The design of the wastewater reuse system significantly improves the water resource utilization rate. In actual application, the number of circulation times is increased from the traditional 1.5 times to about 4 times or more, thereby effectively reducing the water consumption per unit of beef.

[0054] Hydrocyclone slag removal is used to remove solid particles larger than 5 mm; ceramic membrane filtration is used for secondary filtration to intercept colloidal substances with a size of 0.5 - 10 μm; electrochemical disinfection uses a titanium-based coated electrode with a current density of 10 mA / cm 2 , inactivating pathogenic microorganisms; ice-water heat exchange is to cool the treated water to 4 °C through a plate heat exchanger for pre-cooling use in the cleaning system. The system uses Siemens S7-1200 PLC, integrates a fuzzy PID algorithm, and dynamically adjusts the following parameters. The water circulation rate is adjusted proportionally according to the beef conveying volume (200 - 1000 kg / h) to adjust the pump frequency, and the flow range is 200 - 800 L / min; the chemical agent dosage is fed back by an on-line pH / ORP sensor to control the dosing accuracy of the metering pump within ±5%; the cleaning load linkage is that the weighing sensor monitors the conveyor belt load in real time (accuracy ±0.5 kg). When the load increases by 20%, the nozzle switches to the pulse spraying mode (interval 0.5 - 2 s) to improve the cleaning intensity.

[0055] The surface of the conveyor belt adopts a wavy micro-structure (protrusion height 2mm, spacing 10mm) to increase the contact area between beef and water flow. A self-cleaning scraper is set below, which automatically scrapes off residues every 10 minutes of operation, and the pressure of the scraper is adjustable (0.1 - 0.3MPa). Deploy multi-parameter water quality sensors: turbidity sensor (range 0 - 100NTU, accuracy ±2%); TDS sensor (range 0 - 1000ppm, accuracy ±1%); ORP sensor (range -1000mV to +1000mV, accuracy ±5mV); the data is uploaded to the control center in real time to dynamically adjust the output of the ozone generator (0.1 - 2ppm) and the mixing ratio of reverse osmosis water (±5%).

[0056] In terms of cleaning efficiency, the residual amount of impurities on the beef surface after three-stage cleaning ≤ 0.1%, and the microbial indicators meet GB / T5750.12 - 2023. In terms of water-saving effect, compared with traditional single-stage cleaning, the water consumption is reduced by 65%, and the reuse rate of recycled water reaches 85%; in terms of energy consumption optimization, the intelligent control system reduces the chemical consumption by 20% and the power consumption by 15%. When the conveying volume suddenly increases from 500kg / h to 800kg / h, the water circulation rate is increased from 400L / min to 720L / min within 10 seconds, and the nozzle pulse interval is shortened to 0.8s to ensure the stability of cleaning quality. To ensure the stable operation of the entire cleaning process under various working conditions, the present invention adopts an intelligent control system based on PLC, integrating multiple water quality, flow, temperature and weighing sensors, and realizing closed-loop regulation through an improved fuzzy PID control algorithm. The control system collects data of each processing link in real time, and automatically adjusts the pump frequency, nozzle working pressure, pulse interval and chemical dosage according to the error between the preset target value and the actual value. Through this algorithm, the system can quickly respond and maintain the optimal state of process parameters when the beef conveying volume fluctuates or the pollution load changes. This part of the technology greatly improves the cleaning efficiency and water resource utilization rate in practical applications, while reducing energy consumption and chemical costs.

[0057] In view of the situation that some raw beef has a lot of impurities attached to the surface, a supplementary pretreatment scheme is adopted. After X-ray detection, infrared thermal imaging detection is added to assist in identifying abnormal surface temperature areas and further locate impurities. The vibration screening equipment adopts a multi-dimensional vibration platform with adjustable vibration direction, so that the beef is vibrated in multiple directions to enhance the impurity separation effect. The air knife pre-purge adopts enhanced wind pressure, increases the purge time, and ensures that the fine impurities on the surface are completely removed. This embodiment enables the raw beef to reach a higher preliminary cleaning standard before entering the continuous cleaning, provides a better foundation for subsequent cleaning, and is suitable for processing low-quality raw materials or more impurities. In order to meet higher environmental protection standards and product quality requirements, a supplementary wastewater treatment scheme is adopted. After the primary effluent deep treatment, the membrane bioreactor (MBR) is supplemented for biodegradation treatment to further reduce the content of organic pollutants in the water. The water body is treated with ozone / hydrogen peroxide in combination with the advanced oxidation process (AOP) to ensure that the quality of the recycled water meets or even exceeds the national standards. The online monitoring system adds TOC sensors, dissolved oxygen sensors, etc. to comprehensively monitor the water quality, and uploads the data to the central control system in real time to achieve fine control and green environmental protection goals. This embodiment not only greatly improves the water reuse rate, but also makes the treated reused water of extremely high quality, and can be applied to high-standard food processing and occasions with strict requirements on water quality.

[0058] In addition, on the basis of the three-stage cleaning, an intermediate cleaning stage is added, using low-temperature water immersion combined with low-frequency vibration to further soften the fat and protein attachments on the beef surface, so that it is easier to peel off during the subsequent physical and biochemical treatment process. In the physical cleaning stage, different pulse spray modes are designed for different parts of beef. For example, for areas with thicker meat blocks, longer spray intervals and higher water pressures can be used; for areas with thinner surfaces or easily damaged parts, short pulses and low-pressure sprays are used. This solution can be automatically adjusted through the parameter setting of the intelligent control system. In the biochemical treatment stage, in addition to using surfactants, food-grade enzyme preparations can also be introduced to assist in the decomposition of protein contaminants on the surface and fibers of beef. The combination of enzymatic treatment and ultrasonic-assisted cleaning can further improve the thoroughness of cleaning and the processing quality of beef.

[0059] The technical solution in this embodiment can achieve the precision of foreign object detection and preliminary treatment; the multi-level coordination of physics, biochemistry, and aseptic cleaning; the dynamic regulation technology based on fuzzy PID; the modular water treatment and efficient reuse architecture. By adding measures such as multi-dimensional pretreatment, dynamic pulse injection, and enzymatic hydrolysis treatment, the pollutants on the surface and inside of beef can be more thoroughly removed. Practical tests show that after three-stage continuous cleaning, the residual rate of surface impurities of beef is reduced to less than 0.1%, and the microbial indicators meet or exceed the national standard requirements. The application of supplementary wastewater treatment technology and intelligent control system increases the wastewater reuse times from the traditional 1.5 times to more than 4 times, and the overall water consumption per unit of beef is reduced from the traditional 8-10 L / kg to 3.8-4.0 L / kg. The water saving rate reaches more than 65%, greatly reducing the water resource consumption in the production process. The intelligent control system realizes the precise control of the water pump, nozzle, and chemical dosing system through real-time data acquisition and predictive regulation, reducing the energy consumption by about 15% and the chemical consumption by about 20% while maintaining the cleaning effect. By using countercurrent cleaning and intelligent water regeneration system to remove the biological impurities on the surface of beef, realizing the cascade utilization of water resources in beef pretreatment, and using dynamic water treatment technology to precisely control the water circulation rate, the energy consumption cost can be effectively reduced, fully demonstrating the green environmental protection and economic benefits.

[0060] In one embodiment, Figure 2 is a block diagram of a multi-level water-saving cleaning device for beef pretreatment shown according to an exemplary embodiment. As Figure 2 shown, the multi-level water-saving cleaning device for beef pretreatment includes a pretreatment module 21, a cleaning module 22, and a water circulation module 23.

[0061] The pretreatment module 21 is used for detecting foreign objects in beef and removing preliminary impurities;

[0062] The cleaning module 22 is used for adopting a three-stage countercurrent cleaning process to sequentially perform primary physical cleaning, secondary biochemical treatment, and tertiary aseptic rinsing;

[0063] The water circulation module 23 is used for classifying and recycling the water bodies after each stage of cleaning, including supplementing the tertiary effluent to the secondary, supplementing the secondary effluent to the primary, and recycling the primary effluent after treatment.

[0064] The pretreatment module 21, the cleaning module 22, and the water circulation module 23 included in the block diagram of the multi-level water-saving cleaning device for beef pretreatment are controlled to execute the multi-level water-saving cleaning method for beef pretreatment described in any of the above embodiments.

[0065] As Figure 3 shown, the present invention provides an electronic device 300, which includes: a communication interface, a processor 301, and a memory 302;

[0066] Among them, the memory 302 is used to store program instructions, and when the program instructions are executed by the processor 301 communicatively connected to the memory 302 through the communication interface, foreign object detection and preliminary impurity removal are performed on beef; a three-stage countercurrent cleaning process is adopted, and primary physical cleaning, secondary biochemical treatment, and tertiary aseptic rinsing are sequentially performed; the water bodies after cleaning at each stage are subjected to hierarchical treatment and recycled, including supplementing the tertiary effluent to the secondary, supplementing the secondary effluent to the primary, and recycling the primary effluent after treatment.

[0067] The present invention provides a computer-readable storage medium, on which computer program instructions are stored. When the computer program instructions are executed by a processor, foreign object detection and preliminary impurity removal are performed on beef; a three-stage countercurrent cleaning process is adopted, and primary physical cleaning, secondary biochemical treatment, and tertiary aseptic rinsing are sequentially performed; the water bodies after cleaning at each stage are subjected to hierarchical treatment and recycled, including supplementing the tertiary effluent to the secondary, supplementing the secondary effluent to the primary, and recycling the primary effluent after treatment.

[0068] It should be understood that the specific features, operations, and details described above regarding the method of the present invention can be similarly applied to the apparatus and system of the present invention, or vice versa. In addition, each step of the method of the present invention described above can be executed by the corresponding component or unit of the apparatus or system of the present invention.

[0069] It should be understood that each module / unit of the apparatus of the present invention can be implemented in whole or in part by software, hardware, firmware, or a combination thereof. Each module / unit can be embedded in the processor of the computer device in the form of hardware or firmware or independent of the processor, or can be stored in the memory of the computer device in the form of software for the processor to call to execute the operations of each module / unit. Each module / unit can be implemented as an independent component or module, or two or more modules / units can be implemented as a single component or module.

[0070] In one embodiment, a computer device is provided, which includes a memory and a processor. Computer instructions executable by the processor are stored on the memory. When executed by the processor, the computer instructions direct the processor to perform the steps of the method of the embodiments of the present invention. The computer device can be broadly a server, a terminal, or any other electronic device having the necessary computing and / or processing capabilities. In one embodiment, the computer device may include a processor, a memory, a network interface, a communication interface, etc., connected via a system bus. The processor of the computer device can be used to provide the necessary computing, processing, and / or control capabilities. The memory of the computer device may include a non-volatile storage medium and an internal memory. An operating system, computer programs, etc. may be stored in or on the non-volatile storage medium. The internal memory can provide an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The network interface and communication interface of the computer device can be used to connect and communicate with external devices via a network. The computer program, when executed by the processor, performs the steps of the method of the present invention.

[0071] The present invention can be implemented as a computer-readable storage medium, on which a computer program is stored. When executed by the processor, the computer program causes the steps of the method of the embodiments of the present invention to be executed. In one embodiment, the computer program is distributed across multiple network-coupled computer devices or processors such that the computer program is stored, accessed, and executed in a distributed manner by one or more computer devices or processors. A single method step / operation, or two or more method steps / operations, can be executed by a single computer device or processor or by two or more computer devices or processors. One or more method steps / operations can be executed by one or more computer devices or processors, and one or more other method steps / operations can be executed by one or more other computer devices or processors. One or more computer devices or processors can execute a single method step / operation, or execute two or more method steps / operations.

[0072] Those of ordinary skill in the art can understand that the method steps of the present invention can be instructed by a computer program to complete relevant hardware such as a computer device or a processor. The computer program can be stored in a non-transitory computer-readable storage medium, and when the computer program is executed, the steps of the present invention are caused to be executed. Depending on the situation, any reference herein to a memory, storage, database, or other medium may include non-volatile and / or volatile memory. Examples of non-volatile memory include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), flash memory, magnetic tape, floppy disk, magneto-optical data storage device, optical data storage device, hard disk, solid state disk, etc. Examples of volatile memory include random access memory (RAM), external cache memory, etc.

[0073] The technical features described above can be combined arbitrarily. Although not all possible combinations of these technical features are described, any combination of these technical features should be considered to be covered by this specification, as long as such a combination does not exist in contradiction.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-stage water-saving cleaning method for beef pretreatment, characterized in that: include: Foreign matter inspection and preliminary impurity removal of beef; A three-stage countercurrent cleaning process is used, which sequentially performs primary physical cleaning, secondary biochemical treatment, and tertiary sterile rinsing; The water bodies after cleaning at each level are treated and recycled in stages, including the tertiary effluent being supplemented to the secondary, the secondary effluent being supplemented to the primary, and the primary effluent being recycled after treatment.

2. The multi-stage water-saving cleaning method for beef pretreatment according to claim 1, characterized in that: The foreign body detection and preliminary impurity removal of beef includes: The beef is scanned using an X-ray foreign body detection device to identify metallic and non-metallic impurities; Remove loose impurities on the surface through mechanical vibration screening, with a vibration frequency of 20-30Hz; Use an air knife device for pre-purge treatment with an air knife pressure of 0.3-0.5MPa to remove adherent impurities.

3. The multi-stage water-saving cleaning method for beef pretreatment according to claim 1, characterized in that: The three-stage countercurrent cleaning process comprises: The first-level physical cleaning uses a high-pressure fan-shaped nozzle array with a pressure range of 0.8-1.2MPa, combined with a vortex guide groove for surface flushing, and the cleaning time is 60s; The secondary biochemical treatment uses microbubble water containing food-grade surfactants, with a pH value controlled at 6.5-7.2, and 40kHz ultrasonic treatment is applied for a cleaning time of 45s; The third-level sterile rinse uses a composite rinse of ozone water and reverse osmosis pure water, with an ozone concentration of 0.5-1ppm and a cleaning time of 30s.

4. The multi-stage water-saving cleaning method for beef pretreatment according to claim 1, characterized in that: The step of treating and recycling the water after each level of cleaning includes: The effluent from the tertiary cleaning area is filtered through a ceramic membrane and then replenished to the secondary cleaning area; The effluent from the secondary cleaning area is fed to the primary cleaning area after the particles >100 μm are removed by a cyclone sedimentation device; The effluent from the primary cleaning area is stored in the reuse water tank after coagulation, sedimentation and ultraviolet disinfection.

5. The multi-stage water-saving cleaning method for beef pretreatment according to claim 1, characterized in that: The step of treating and recycling the water after each level of cleaning also includes: The sewage is subsequently treated by sequentially performing any one or more of cyclone deslagging, ceramic membrane filtration, electrochemical disinfection and ice-water heat exchange; A PLC-based fuzzy PID controller dynamically adjusts the water circulation rate (200-800L / min) and the dosage of the reagent (±5% accuracy) according to the amount of beef delivered; The cleaning load is monitored in real time through the weighing sensor, and the pulse spray mode of the nozzle group is adjusted in conjunction (interval 0.5-2s).

6. The multi-stage water-saving cleaning method for beef pretreatment according to claim 1, characterized in that: Also includes: During the cleaning process, the contact area is increased by the surface microstructure of the corrugated conveyor belt, and the residue is periodically removed by a self-cleaning scraper; The turbidity, TDS and ORP values ​​are monitored in real time through a water quality sensor network, and the ozone concentration and reverse osmosis water ratio are adjusted through feedback.

7. A multi-stage water-saving cleaning device for beef pretreatment, characterized in that: include: A pre-treatment module for foreign body detection and preliminary impurity removal of beef; A cleaning module, for sequentially performing primary physical cleaning, secondary biochemical treatment and tertiary aseptic rinsing using a three-stage countercurrent cleaning process; The water circulation module is used to carry out graded treatment and recycling of water after each level of cleaning, including replenishing the tertiary effluent to the secondary, replenishing the secondary effluent to the primary, and recycling the primary effluent after treatment.

8. The multi-stage water-saving cleaning device for beef pretreatment according to claim 7, characterized in that: The pretreatment module, the cleaning module and the water circulation module are controlled to execute the multi-stage water-saving cleaning method for beef pretreatment according to any one of claims 1 to 6.

9. An electronic device, characterized in that: include: Communication interface, processor, memory; Wherein, the memory is used to store program instructions, and when the program instructions are executed by the processor that is communicatively connected to the memory through the communication interface, the electronic device implements the multi-stage water-saving cleaning method for beef preprocessing as described in any one of claims 1 to 6.

10. A computer-readable storage medium having program instructions stored thereon, characterized in that: When the program instructions are executed by a computer, the computer implements the multi-stage water-saving cleaning method for beef pretreatment as described in any one of claims 1 to 6.

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