30 results about "Microbial inactivation" patented technology

This invention provides a method for synergistically preparing sterile liquid formulations using high-energy fluid milling and plant components, relating to the field of traditional Chinese medicine technology. The method involves subjecting medicinal plant raw materials to a first low-temperature treatment using high-energy fluid milling to obtain highly active functional components. These functional components are then mixed with a liquid formulation matrix and subjected to a second low-temperature treatment using high-energy fluid milling, simultaneously achieving homogenization and sterilization. This invention reveals for the first time a significant synergistic sterilization effect between the medicinal plant functional components prepared by a specific process and the high-energy fluid milling treatment. Complete microbial inactivation can be achieved under mild conditions of 120 MPa and below 50°C, with effects far exceeding the simple superposition of a single component and a single physical treatment. This invention provides an integrated homogenization-sterilization method for external preparations and natural beverages that eliminates the need for chemical preservatives and high-temperature sterilization, and has broad applicability in the fields of traditional Chinese medicine and food.

This invention discloses a fresh air device with ultraviolet light air sterilization, belonging to the interdisciplinary field of air purification technology and fluid dynamics. The device includes an outer shell with an inner wall coated with an ultraviolet reflective layer; the interior is divided sequentially along the airflow direction into an air intake pretreatment section, a core reaction layer, and a terminal protection and exhaust layer. The core reaction layer contains alternating ultraviolet light sources and porous ceramic carriers coated with a nano-photocatalytic coating, and is equipped with inclined guide plates. When a fan drives airflow through the device, the reflective coating reflects ultraviolet light multiple times to the reaction zone, eliminating blind spots, and the guide plates force the airflow to form a non-linear path, extending the residence time. This invention solves the problems of low light energy utilization and incomplete sterilization caused by airflow short-circuiting in existing technologies through the synergistic optimization of the light field and flow field, significantly improving the microbial inactivation efficiency per unit volume, and is suitable for high-cleanliness environments such as hospitals and laboratories.

The invention provides a preparation method of prefabricated quick-frozen fried pseudosciaena crocea based on physical field auxiliary sterilization. The method comprises the following steps: S1, immersing pseudosciaena crocea with fish scales and internal organs removed into a fishy smell removing agent, taking out the pseudosciaena crocea after 1 hour, washing the pseudosciaena crocea with pure water for 5 minutes, and wiping the pseudosciaena crocea to S2, frying the fishy-smell-removed pseudosciaena crocea, cooling, packaging and sealing; s3, performing low-temperature plasma sterilization; and S4, refrigerating at 4 DEG C for 12 hours, and freezing when the center temperature of the large yellow croaker reaches-18 DEG C. According to the preparation method disclosed by the invention, the sensory score of the fishy smell of the pseudosciaena crocea is remarkably reduced, the microbial inactivation effect is remarkable, the freezing time is shortened to 38.17 min, the unfreezing loss, the centrifugal loss and the cooking loss are reduced to the maximum extent, stable water-holding capacity and moisture distribution in the fish meat are maintained, uniform and fine ice crystals are formed, and the fish meat is close to a fresh state in texture; and the quality of the fish meat is well maintained.

The present invention relates to a system (100) for the particulate removal and microbiological removal and / or microbiological inactivation of goods (150), in particular their surfaces. The system (100) has a cleaning chamber (101) in which the goods (150) can be placed. An access opening (102) of the cleaning chamber (101) can be closed to prevent access during operation. An eddy current system (104) directs a turbulent flow (107) of a cleaning fluid into the cleaning chamber (101) to agitate particles on the goods (150). A displacement flow system directs a continuous, low-turbulence displacement flow (108) of a cleaning fluid through the cleaning chamber in a predetermined flow direction to remove the agitated particles from the goods (150).A UV radiation source (106) emits UV radiation with a wavelength range of 100 nm to 280 nm into the cleaning chamber (101) for microbiological inactivation. A conveyor system (115) for handling the goods (150) is provided to place the goods (150) in the cleaning chamber (101). A control unit (110) automatically controls a predefined cleaning sequence.

The invention belongs to the technical field of storage management of biological fermentation products, and particularly relates to a temperature and humidity self-adaptive control method for prolonging the storage time of a microbial agent. The method comprises the following steps: acquiring real-time environmental parameters of a warehouse, and calculating an environmental fluctuation stress factor according to the deviation between the environmental parameters and a historical mean value; constructing a fluctuation correction type microbial inactivation rate model, introducing an environmental fluctuation stress factor into a kinetic equation to calculate an instantaneous inactivation rate, and performing integration to obtain an actual accumulated damage index; and dynamically calculating a temperature set value according to the proportional relation between the actual damage and the theoretical expected damage, and issuing the temperature set value to the temperature control equipment for adjustment after safety boundary verification. According to the method, the recessive accumulated damage of the environmental fluctuation to the microorganisms is calculated, so that the environmental self-adaptive adjustment based on the life cycle is realized, and the storage energy consumption is effectively reduced while the activity retention rate of the microbial agent is guaranteed.

The invention belongs to the crossing field of biological medicine and photoelectronic technology, particularly relates to a self-adaptive spectrum sterilization and efficacy maintenance system, and aims to solve the technical problem that active ingredients are easily damaged while efficient microorganism inactivation is realized by the traditional sterilization technology. The system comprises a spectrum generation module, a multi-mode sensing module, a dynamic regulation and control module and a closed-loop execution module, a double-target optimization model is constructed by collecting multi-dimensional data such as microbial fluorescence, Raman fingerprints, temperature and light transmittance in real time, the spectrum ratio and output parameters are adjusted online, and sterilization efficiency and drug effect maintenance are collaboratively optimized. A viable bacterium area is identified by pre-scanning, selective irradiation is implemented, and self-adaptive closed-loop control of the treatment process is realized by combining dynamic weight adjustment and compensatory protection measures. The system has the characteristics of high precision, low damage, energy conservation and safety, and is suitable for light-operated treatment of high-added-value products such as medicines and health-care products.

The utility model discloses a microbial inoculum granulator for producing bacterial manure, which comprises a granulator main body, a cooling mechanism and a stripping brush are arranged in the granulator main body, the granulator main body comprises a support frame, a charging barrel, a driving motor, a first roller and a second roller, the charging barrel is fixedly arranged on the support frame, and the driving motor is arranged on the support frame. The first roller and the second roller are installed in the charging barrel and rotationally connected with the charging barrel, the driving motor is fixedly installed on the supporting frame and drives the first roller and the second roller, refrigerant cavities are formed in the first roller and the second roller, and the cooling mechanism comprises a central shaft pipe, a refrigerant inlet, a refrigerant inner outlet, a refrigerant outer outlet and a refrigerant backflow opening. The side end faces of the first roller and the second roller are provided with shaft holes in running fit with the central shaft tube. The roller cooling device has the advantages of good roller cooling effect, thorough particle stripping and convenience in cleaning and maintenance, and solves the problems of microorganism inactivation and difficult falling of adhered particles caused by temperature rise of the existing equipment.

The invention relates to a system (100) for the particulate depletion and microbiological depletion and / or microbiological inactivation of goods (150), in particular of the surfaces thereof. The system (100) comprises a cleaning chamber (101) in which the goods (150) can be placed. An access opening (102) of the cleaning chamber (101) can be closed during operation to prevent access. An eddy current system (104) directs a turbulent flow (107) of a cleaning fluid into the cleaning chamber (101) in order to swirl up particles on the goods item (150). A displacement flow system directs a continuous, low-turbulence displacement flow (108) of a cleaning fluid in a predetermined flow direction through the cleaning chamber in order to remove the swirled-up particles from the goods item (150). A UV radiation source (106) radiates UV radiation having a wavelength range of 100 nm to 280 nm into the cleaning chamber (101) for microbiological inactivation. A control device (110) automatically controls a predetermined cleaning procedure.

The invention discloses a natural water treatment method, and relates to the technical field of water treatment. A hydrodynamic excitation environment is constructed in a water treatment reaction channel, and a flexible piezoelectric fiber array is arranged in the water flow direction, so that flexible piezoelectric fibers generate periodic bending vibration under the action of natural water flow or auxiliary hydrodynamic force, and a distributed and non-uniform piezoelectric micro electric field is formed in situ on the surfaces of the fibers and in a water body adjacent to the fibers. The micro electric field continuously disturbs a hydration structure, ion distribution and microbial membrane potential in a water body, so that the molecular structure and biological activity of pollutants are unstable or attenuated. Under an illumination condition, a piezoelectric electric field and photocatalysis synergistically generate active free radicals, so that organic pollutant degradation and microorganism inactivation are realized.

The present invention describes a microbiological inactivation system using UV-C radiation, designed to be integrated into air conditioning and ventilation grilles, aiming to improve indoor air quality and minimizing the presence of pathogenic microorganisms such as viruses, bacteria and fungi. The system comprises a microbiological inactivation module with UV-C lamps arranged in a sinuous circuit, which maximizes the air's exposure to ultraviolet radiation and the reflection and redistribution of UV-C radiation by internal surfaces. In addition, the blower is equipped with an electric motor controlled by a frequency inverter, allowing bidirectional operation of the fan (air insufflation and extraction), which provides flexibility in ventilating and purifying the environment. Installation and maintenance are made easy thanks to the design, which allows the system to be adapted to different air volumes and microbiological control needs, without the need for complex modifications to existing air conditioning and ventilation. This microbiological inactivation system using UV-C radiation contributes to improving air quality, increasing microbiological safety in different contexts.

The invention discloses a roxburgh rose juice microorganism control and quality optimization system based on an ultrahigh pressure technology, and relates to the technical field of food processing, the roxburgh rose juice microorganism control and quality optimization system comprises a data sensing module which comprises a near-infrared spectrometer mounted on a raw material conveying pipeline and is used for acquiring microorganism cardinal number, sugar-acid ratio and turbidity in real time; according to the roxburgh rose juice microorganism control and quality optimization system based on the ultrahigh pressure technology, through a double-model dynamic game mechanism and a boundary overlapping domain optimization algorithm, the contradiction between microorganism inactivation and quality protection caused by fluctuation of roxburgh rose juice raw materials is solved. The double-model collaborative decision-making module generates a quantitative processing boundary according to real-time raw material characteristics, and accurately locates an optimal parameter combination for maximizing an active substance retention rate on the premise of guaranteeing a food safety threshold value; a hard real-time matching system of pulse pressure relief and feedback realizes dynamic correction of process parameters, and effectively improves the adaptability of complex raw materials with high acid, high turbidity and the like.

The invention relates to a system (100) for the particulate depletion and microbiological depletion and / or microbiological inactivation of goods (150), in particular of the surfaces thereof. The system (100) comprises a cleaning chamber (101) in which the goods (150) can be placed. An access opening (102) of the cleaning chamber (101) can be closed during operation to prevent access. An eddy current system (104) directs a turbulent flow (107) of a cleaning fluid into the cleaning chamber (101) in order to swirl up particles on the goods item (150). A displacement flow system directs a continuous, low-turbulence displacement flow (108) of a cleaning fluid in a predetermined flow direction through the cleaning chamber in order to remove the swirled-up particles from the goods item (150). A UV radiation source (106) radiates UV radiation having a wavelength range of 100 nm to 280 nm into the cleaning chamber (101) for microbiological inactivation. A control device (110) automatically controls a predetermined cleaning procedure.

The present disclosure relates to an agricultural capsule equipment, autonomous or operator-controlled, designed for the microbiological inactivation of pests and pathogens in crops, using controlled UV-C radiation with the modular capacity in terms of height and width and an efficiency protection to ensure that aerosols and insects in aerial form remain inside the equipment and a 360 º inactivation radius. The equipment comprises a low-profile mobile support configured to move along agricultural corridors and an articulated arched structure defining a fully enclosed treatment volume. The autonomous or operator-controlled features an adjustable hydraulic system that allows automatic control of its height and width to adapt to different types of plants, optimizing the application of radiation. The UV-C radiation exposure time and power are adjustable, ranging from 5 to 15 seconds, to ensure effective treatment. At least one UV-C radiation unit is arranged within the enclosed treatment volume, and a control system is configured to regulate displacement speed and UV-C radiation output such that a minimum effective UV-C dose is achieved. An enclosure and flexible sealing elements prevent the emission of UV-C radiation and the dispersion of airborne particles to the exterior. An airflow control system further contributes to containment during operation. The equipment may comprise imaging sensors, including a 360 degree camera system is also used to continuously monitor the plantation, enabling real-time monitoring and automated adjustment of operating parameters. To ensure operator and environmental safety, the radiation unit is protected by a polycarbonate cover that blocks UV-C radiation emissions, and an airflow control system is integrated to prevent the dispersion of contaminating particles during the equipment's movement. The technology aims to reduce the use of chemical pesticides, enabling effective microbiological control, and promoting more sustainable agriculture with a low environmental impact.

The present application belongs to the technical field of inactivation of pathogenic microorganisms in water bodies, and discloses a method for inactivating pathogenic microorganisms in water bodies by activating persulfate oxidation with Bordeaux mixture and application thereof. The method is as follows: Bordeaux mixture is added to water bodies contaminated with pathogenic microorganisms, and then a persulfate solution is added to form a reaction system, and the reaction system is shaken at room temperature to simulate real water bodies, so as to inactivate the pathogenic microorganisms. The present application provides a new method for inactivating pathogenic microorganisms such as Escherichia coli and Enterococcus faecalis in water bodies. Sulfate radicals and hydroxyl radicals are generated by activating persulfate with Bordeaux mixture, and alkaline copper sulfate and calcium sulfate precipitate and flocculate and settle the pathogenic bacteria residues in cooperation. The inactivation effect of the Bordeaux / PS system within 5 minutes reaches more than 99%.

This invention provides a method, device, system, and equipment for directional pressure relief and infection control in a hematology ward, belonging to the field of medical environment control technology. The method includes: determining a first operating state of the hematology ward based on acquired signals; when the first operating state meets a first control precondition, generating a predictive control signal and a feedback control signal based on the acquired signals; performing signal fusion to obtain a comprehensive control command; adjusting the opening of a pressure relief valve in the pressure relief duct between the ward and the waste corridor according to the comprehensive control command, so as to stabilize the ward pressure within a target range and direct the ward air out through the pressure relief duct under pressure differential, allowing the exhausted air to be filtered and purified by a filtration device and then subjected to deep microbial inactivation treatment by a deep microbial inactivation module. This invention improves the stability of pressure control, achieving stable maintenance of a positive pressure environment and safe directional discharge of polluted air in a hematology ward under structurally constrained conditions.

An air ventilation system for an indoor space includes an air processing unit that includes a housing that receives air from the indoor space and discharges treated air, a microbial deactivation channel provided within the housing and defining a serpentine pathway that causes the air to navigate one or more directional changes as it circulates through the housing, and one or more ultraviolet (UV) light sources arranged within the microbial deactivation channel to emit UV light that impinges on and disinfects the air. One or more light reflection features are provided on one or more interior surfaces of the microbial deactivation channel, the one or more light reflection features comprising flat, mirror-like structures that receive and redirect the UV light within the microbial deactivation channel.

A table unit (1, 2, 3) for generating a substantially microorganism-inactivated spatial region (5), comprising a housing (10) having an interior (14) with a longitudinal axis (L), a blower device (60) designed to receive air from the outside and to convey it into the interior (14), a radiation source (50) designed to emit light in the UV-C spectral range into the interior (14) to inactivate or kill microorganisms in the received air (121), and an air outlet device (70) through which disinfected air (122) can flow out of the interior (14) into the space surrounding the housing (10). The air outlet device (70) is designed to produce preferably a laminar flow in the outflowing air (123), which contributes to the formation of a substantially microorganism-inactivated spatial region (5) in the surrounding space. The substantially microorganism-inactivated spatial region (5) generated in this way is closed and completely surrounds the housing (10).

The invention relates to a system (100) for the particulate depletion and microbiological depletion and / or microbiological inactivation of goods (150), in particular of the surfaces thereof. The system (100) comprises a cleaning chamber (101) in which the goods (150) can be placed. An access opening (102) of the cleaning chamber (101) can be closed during operation to prevent access. An eddy current system (104) directs a turbulent flow (107) of a cleaning fluid into the cleaning chamber (101) in order to swirl up particles on the goods item (150). A displacement flow system directs a continuous, low-turbulence displacement flow (108) of a cleaning fluid in a predetermined flow direction through the cleaning chamber in order to remove the swirled-up particles from the goods item (150). A UV radiation source (106) radiates UV radiation having a wavelength range of 100 nm to 280 nm into the cleaning chamber (101) for microbiological inactivation. A conveying system (115) for handling the goods item (150) is provided in order to place the goods item (150) in the cleaning chamber (101). A control device (110) automatically controls a predetermined cleaning procedure.

The invention discloses a treatment unit and a sterilization method for removing microorganisms, especially bacillus cereus, without affecting pancreatin activity, the treatment unit comprises a double-layer solid filter element to terminate the sterilization effect of a sterilization solution and stabilize the pH value of a system, and the sterilization method comprises the steps of microorganism inactivation, treatment by the treatment unit and drying by a forced air drying process; according to the treatment unit, through the synergistic effect of the upper-layer solid filter element and the lower-layer solid filter element, the stable PH value is maintained while the sterilization effect of the sterilization liquid is terminated, and the pancreatin solution which is free of oxidability, moderate in pH and capable of achieving the microorganism standard is obtained. In addition, through the specific working concentration of the non-compound PAA stock solution, the specific treatment unit composition and the forced air drying process and parameters, the problem that the existing sterilization method cannot give consideration to both the bacillus cereus removal effect and the pancreatin activity retention is solved.

The invention discloses a vacuum bottle surface microorganism inactivation device and method. The inactivation device comprises a cabinet body, a storage table arranged at the top of the cabinet body, and an inactivation cavity arranged at the top of the storage table, the inner wall of the inactivation cavity is coated with a titanium dioxide photocatalytic layer, and a gas conveying pipe is mounted at the top of the inactivation cavity; a plurality of deep ultraviolet LED lamps are mounted on the inner side of the inactivation cavity; a jacking mechanism is mounted between the bottom of the storage table and the top of the cabinet body, and a control system used for presetting a sterilization program and transmitting and receiving a control instruction is mounted at the top of the cabinet body. Through the cooperation of UV-C light with a specific wavelength and the nano titanium dioxide photocatalytic layer, the double inactivation effects of physical sterilization and chemical oxidation can be realized in a chemical-additive-free and residue-free manner, and the residue risk possibly introduced by a traditional chemical wiping or gas sterilization method is avoided; the interference of chemical substances on the stability of the radiopharmaceutical is fundamentally eliminated, so that the requirement on extremely high cleanliness is met.

The present invention relates to a system (100) for the particulate removal and microbiological removal and / or microbiological inactivation of goods (150), in particular their surfaces. The system (100) has a cleaning chamber (101) in which the goods (150) can be placed. An access opening (102) of the cleaning chamber (101) can be closed to prevent access during operation. An eddy current system (104) directs a turbulent flow (107) of a cleaning fluid into the cleaning chamber (101) to agitate particles on the goods (150). A displacement flow system directs a continuous, low-turbulence displacement flow (108) of a cleaning fluid through the cleaning chamber in a predetermined flow direction to remove the agitated particles from the goods (150).A UV radiation source (106) emits UV radiation with a wavelength range of 100 nm to 280 nm into the cleaning chamber (101) for microbiological inactivation. A conveyor system (115) for handling the goods (150) is provided to place the goods (150) in the cleaning chamber (101). A control unit (110) automatically controls a predefined cleaning sequence. A data processing unit exchanges information with the control unit (110) regarding at least the system status, the cleaning sequence, the degree of cleaning of the goods (150), and / or condition information of the goods (150).

The present application provides a method for preserving liquid food by means of pulsed electric field treatment. The invention relates to a method for rapidly and uniformly heating a liquid product to a predetermined temperature by means of resistive heating. According to the invention, based on the application of an electric field strength between 0.1 - 5.0 kV / cm for an extended period of time, sufficient and effective microbial inactivation is achieved by selecting a relatively low electric field strength and a pulse duration of at least 10 microseconds, while the maximum temperature of the liquid product during resistive heating is autonomously kept below 92 °C. The method of the invention is effective at neutral pH and at a pH of less than 7. Furthermore, the method of the invention is effective in inactivating a broad range of relevant microorganisms. The invention also relates to the method, wherein the liquid product is pre-heated prior to subjecting the method to the liquid product. The invention also relates to a liquid product obtainable by the method according to the invention.

A water treatment method for gradient control of electromagnetic wave parameters relates to the technical field of circulating water treatment, and adopts the technical scheme that the method comprises the following steps: S1, dividing a circulating water flow channel into a plurality of functional sections according to the flowing direction of circulating water, arranging an electromagnetic wave emitter in each functional section, and monitoring water quality key parameters in each functional section; s2, determining the processing power required for processing a unit circulation amount in each functional section, and configuring the total processing power of all electromagnetic wave emitters in each functional section according to the total circulation amount; and S3, correcting the total processing power of the electromagnetic wave transmitter in each functional section by taking the water quality key parameter as a correction factor. According to the circulating water treatment device, staged treatment of scale stripping, impurity condensation and microorganism inactivation of circulating water is achieved, the treatment power is in a gradient type descending trend, and compared with the prior art, the energy consumption is effectively reduced on the premise that the treatment effect is guaranteed.

This invention discloses an intelligent curing method and system for self-healing concrete materials, relating to the field of concrete material curing technology. The method includes: acquiring electrophysiological response data and image data of multiple preset path segments along the crack path; extracting the density value of the repair product and the microbial activation time point and response intensity; determining whether microbial inactivation or path blockage exists based on the time difference and intensity difference between adjacent path segments; judging the repair status by combining the density value and response intensity; and generating and outputting curing strategy instructions accordingly. Its beneficial effects are: it can monitor the electrophysiological response and repair product density of each crack segment in real time, dynamically judge microbial activity and path blockage status, and generate targeted curing instructions, solving the problem of uncontrollable repair process in existing technologies, and has the advantages of improving repair efficiency and stability.

An air ventilation system for an indoor space includes an air processing unit that includes a housing that receives air from the indoor space and discharges treated air, a microbial deactivation channel provided within the housing and defining a serpentine pathway that causes the air to navigate one or more directional changes as it circulates through the housing, and one or more ultraviolet (UV) light sources arranged within the microbial deactivation channel to emit UV light that impinges on and disinfects the air. One or more light reflection features are provided on one or more interior surfaces of the microbial deactivation channel, the one or more light reflection features comprising flat, mirror-like structures that receive and redirect the UV light within the microbial deactivation channel.

The invention relates to a meat product processing method for dynamically regulating and controlling supercritical parameters based on a deep learning model, which comprises the following steps: establishing a meat product processing historical database, establishing a mapping relationship between process parameters and quality standards by virtue of the deep learning model, and improving the refinement accuracy of desalting, sterilizing and drying process control. The salt content, the sterilizing effect and the drying effect of the obtained meat product are accurately adjusted, the meat product is ensured to have the expected flavor in the process, and the stability of the production process is improved; the problems that a traditional meat product processing method is insufficient in salinity control precision, remarkable in flavor batch difference, incomplete in microorganism inactivation, lagged in equipment fault response and the like are solved. Compared with the prior art, the supercritical equipment has the advantages that the flavor substance retention rate is increased to 91.3% + / -2.5% (GC-MS detection), the generation amount of hydroxymethylfurfural is smaller than or equal to 35 micrograms / g (lower than 30% of the limit value of No 1881 / 2006 of European Union), the supercritical equipment is compatible with an existing ham production line, and the transformation cost is lower than 30% of the equipment reset cost.

The present invention relates to a system (100) for the particulate removal and microbiological removal and / or microbiological inactivation of goods (150), in particular their surfaces. The system (100) has a cleaning chamber (101) in which the goods (150) can be placed. An access opening (102) of the cleaning chamber (101) can be closed to prevent access during operation. An eddy current system (104) directs a turbulent flow (107) of a cleaning fluid into the cleaning chamber (101) to agitate particles on the goods (150). A displacement flow system directs a continuous, low-turbulence displacement flow (108) of a cleaning fluid through the cleaning chamber in a predetermined flow direction to remove the agitated particles from the goods (150).A UV radiation source (106) emits UV radiation with a wavelength range of 100 nm to 280 nm into the cleaning chamber (101) for microbiological inactivation. A control unit (110) automatically controls a predefined cleaning sequence.

The application provides a kind of plateau alpine microbial self-repairing concrete and its preparation method, relating to concrete crack self-repairing technology, comprising: ceramic sand preloading nutrient solution; urease type bacillus which is resistant to alkali is low temperature acclimated and low pressure acclimated; the preloading nutrient ceramic sand is placed in vacuum tank, after vacuumizing, the microbial liquid after acclimation is injected; after a certain time of adsorption under vacuum degree, the vacuum is released and the excess microbial liquid is drained to form the bacteria-loaded ceramic sand; in the high-altitude simulation cabin, polycarboxylate superplasticizer and mineralized substrate are dissolved in water and dry mixing material is added and mixed uniformly; the bacteria-loaded ceramic sand is added to the mixture and continues to be stirred to obtain a uniform mixture and is injected into a mold, and a low-frequency vibrating compaction is used to obtain a shaped material. The application solves the problem that the self-repairing concrete is difficult to repair due to microbial inactivation in the plateau alpine environment, can realize self-sealing of cracks, and does not exist harmful substances, effectively guarantees the crack repair effect.

This invention relates to the preparation of an iron-copper-sodium alginate composite microsphere and its application in activating periodate to inactivate bacteria and degrade pollutants. The microspheres utilize sodium alginate as a three-dimensional network framework, forming a stable gel structure through ionic cross-linking. A bimetallic active component composed of zero-valent iron and trace amounts of copper is uniformly dispersed within the microspheres. This process activates periodate to achieve highly efficient removal of antibiotic-resistant bacteria, resistance genes, and new pollutants from water. The iron-copper-sodium alginate microspheres are prepared via ionic cross-linking. They are highly efficient and broad-spectrum, achieving rapid sterilization through iron-copper synergy at low metal loading. They are environmentally friendly, as the solid microspheres are completely recyclable, reducing secondary pollution. They are also low-cost, being primarily iron-based with trace amounts of copper for synergistic effects, and reusable. Therefore, this invention provides a novel technical solution for bacterial inactivation and resistance gene removal in water, possessing significant theoretical importance and application prospects.

The utility model provides a positive pressure biological reaction system for solid culture of yellow wine wheat koji, which relates to the technical field of yellow wine brewing equipment and comprises a multi-stage air treatment unit, a positive pressure maintaining structure, an interlayer type culture bin and an online monitoring component, the air treatment unit comprises a particle filtering module, a gas adsorption module and a microorganism inactivation module; the positive pressure maintaining structure realizes dynamic pressure regulation and control through a centrifugal fan, a differential pressure sensor and a PID (Proportion Integration Differentiation) controller; a spiral heat exchange pipeline and an adjustable monitoring probe array are arranged in the interlayer type culture bin, and a quick-connection type sensor interface is integrated on the outer wall of the interlayer type culture bin. The microbiological contamination risk is reduced through the three-stage air purification and gradient flow guide design, the culture uniformity is improved by combining closed-loop positive pressure control and distributed environment monitoring, the operation convenience and the energy consumption efficiency are both considered through the modular structural design, and the problems that a traditional process environment is uncontrollable, monitoring is lagged, and maintenance is difficult are solved.