45results about How to "Improve inactivation efficiency" patented technology

The invention mainly discloses a surface water recycling system for a sponge city. The surface water recycling system comprises a pure water storage system, a sewage treatment system and a water flow control system, wherein the pure water storage system comprises a first water well, a second water well and a circulation well which are connected with one another; the sewage treatment system comprises a first sewage treatment device located in the first water well and a second sewage treatment device located in the second water well. The surface water recycling system can realize effective percolation, treatment and collection of surface water, improves the water quality and facilitates surface water recycling. A construction method of the surface water recycling system comprises steps of ground treatment, foundation pit treatment, building of the water wells, installation of the sewage treatment system, building of the circulation well, laying of filtering plates, laying of internal pipes, laying of water guide pipes and ground surface treatment. The construction method is reasonable in design and adopts simple and reliable construction steps, the construction steps are joined and arranged properly, accumulated water can be guided effectively to infiltrate to underground, and the effect of sufficiently recovering rainwater and surface water is realized.

The invention discloses a method for inhibiting lepidium meyenii myrosinase activity. The method comprises the step that maca is subjected to short-time heat treatment by using stem, wherein fresh lepidium meyenii is blanched in high-temperature steam, such that activity of myrosinase in lepidium meyenii is inhibited or deactivated. The method has high lepidium meyenii myrosinase deactivation efficiency. With the method, myrosinase activity is low, such that lepidium meyenii storage life or shelf life can be prolonged. Also, with the method provided by the invention, glucosinolate content in prepared lepidium meyenii is maintained high, such that lepidium meyenii bioactivity is well maintained, and original nutrients and appearance quality in lepidium meyenii are well preserved. Also, the method is simple and feasible, and energy-saving. The method has the advantages of low cost, good working environment, good sanitary environment, and no pollution.

The invention discloses an indoor air disinfecting and killing module for airborne virus epidemic prevention. The module is characterized in that the lower part of a module shell is provided with a machine body quick-mounting structure for quickly connecting a terminal, and the upper part of the module shell is provided with an air outlet protection structure. A protection net, a plasma generationdevice, a photocatalyst net film, a UVCLED array light source and an ultraviolet ion absorption net film are sequentially arranged between the machine body quick-mounting structure and the air outletprotection structure from bottom to top, and the plasma generation device and the UVCLED array light source are electrically connected with an electrical control box. Air sequentially passes throughthe protection net, the plasma generation device, the photocatalyst net film and the UVCLED array light source, is filtered by the ultraviolet ion absorption net film and then is exhausted. The moduleis high in single cycle efficiency, easy to deploy and controllable in cost, has higher inactivation efficiency on common airborne viruses such as 2019-nCov, can be directly deployed in an existing air purification system, is safe and efficient in sterilization process, does not cause secondary pollution, and effectively meets the urgent requirements of virus epidemic prevention and disinfectionand killing in air of hospitals, classrooms, shopping malls and families.

The invention discloses a preparation method of a dressing skin. The preparation method comprises the following steps of: removing hairs of xenoskin raw materials, and scraping to remove fat and a cuticle so as to obtain a xenoskin material with the thickness of 0.3-0.5 mm; sequentially immersing by using NaCl solution, cleaning by using sterile water, immersing by using neutral protease with the mass fraction of 0.2-0.5% at 37 DEG C, and cleaning by using sterile water so as to obtain a xenoskin; and inactivating the xenoskin so as to obtain the dressing skin, wherein the inactivating step comprises the steps of heating the xenoskin at 50-60 DEG C for 60-120 MIN and irradiating the xenoskin by using gamma rays. The preparation method of the dressing skin is simple to operate and low in cost; four kinds of viruses including PRV (Pseudorabies Virus), VSV (Vesicular Stomatitis Virus), PV1 (Poliovirus 1) and PPV (Porcine Parvovirus) can be completely inactivated; the virus inactivating efficiency is obviously increased; the problem that PV1 cannot be completely inactivated only by irradiating gamma rays can be solved; and therefore, the safety of the dressing skin is increased.

The invention discloses an efficient antibacterial and antivirus copper-based filter screen with a hierarchical structure and a preparation method. The antibacterial copper-based filter screen is composed of a copper screen skeleton, a Cu (OH) 2 nanorod array growing on the surface of a copper screen, a Cu-based metal organic framework (Cu-BDC MOF for short, copper-terephthalic acid) array growingon the surfaces of Cu (OH) 2 nanorods, and a visible light photocatalyst loaded on the surface of Cu-BDC MOF. The production comprises four steps of copper net surface pretreatment, preparation of asurface modifier, preparation of a metal organic framework and loading of the nano visible light photocatalytic material. The efficient antibacterial and antivirus copper-based filter screen with thehierarchical structure, disclosed by the invention, can effectively inactivate bacteria, viruses and the like, ensures cleanness of an environmental water source and domestic water, ensures human health, and can be applied to the fields of protective masks, air purification, water disinfection and the like.

This invention is a one-off virus inactivate blood transfusion filter unit, it belongs to blood processing unit technique field. It includes photosensitizer addition machine, fluorescence irradiation bag and adsorption filtration unit, and they are connected by pipe. Its feature is that the pipe communicates the three unit and blood storage bag in order. Cavernous body that can absorb virus inactivator is set at middle part of the addition machine, fiber membrane filter layer and active carbon absorbed layer is set in absorbing filter. In this invention, methylene orchid is equally added, inactivate efficiency is high, and the equipment structure is simple and reasonable. Its operation is convenient, and blood plasma pollution of each one will not happened, it can be used for medical blood filtering or blood processing in blood station.

The invention discloses a method for suppressing soybean lipoxygenase activity by use of cyclodextrin, belonging to the technical field of cyclodextrin. According to the invention, the cyclodextrin is subjected to complexation with hydrophobic amino acid of the soybean lipoxygenase molecules so as to change the active conformation of lipoxygenase and suppress the activity of the lipoxygenase by 86.26% maximally. The method disclosed by the invention is simple and easy to implement, saves energy, has low cost, realizes good working environment and sanitary environment, and avoids pollution; and through the method, the deodorization technology for soybean and products thereof can be simplified.

The invention relates to a self-gravity hydrodynamic cavitation and ultraviolet radiation combined ballast water treatment device. A water level control chamber is a cavity; a water inlet pipe A is arranged on the wall of one side of the water level control chamber, one end of the water inlet pipe A is arranged outside the water level control chamber, and the other end of the water inlet pipe A extends into the water level control chamber; the water inlet pipe A is connected with one end of a water inlet pipe B, and the other end of the water inlet pipe B extends into the water level control chamber; the part, extending into the water level control chamber, of the water inlet pipe B is a hose pipe. Compared with single ultraviolet inactivation and single hydraulic cavitation inactivation,the self-gravity hydrodynamic cavitation and ultraviolet radiation combined ballast water treatment device has higher inactivation efficiency. The device is small, thus being suitable for the limitedspace characteristic on a ship. The device adapts to the working conditions of different water quality and water quantities, meets the environmental protection requirements, and is high in work reliability, moderate in maintenance amount and small in floor space.

The invention relates to a method for preparing safe and nutritional soybean milk; a motor, a crushing cutter, a heating device and a cup body are provided; the method at least includes the following several stages: (1) a crushing stage including a step of adopting the motor to drive the crushing cutter to rotatingly crush a material and a step of allowing the motor to stop working; and (2) a heating stage including a step of adopting the heating device to heat a liquid in the cup body and a step of allowing the heating device to stop heating. In the method for preparing the safe and nutritional soybean milk, the radiation total heat of the heating device is Q, the soybean milk preparing total amount is V, and the ratio of Q to V is 300-800 kJ / L. Therefore, urease and trypsin inhibitors in the soybean milk can be fully inactivated, and thus the soybean milk is allowed to be more nutritional and safer.

The invention relates to a virus split deactivation method for a human influenza virus split vaccine, and belongs to the field of biological pharmacy. A method of firstly purifying and cracking H1N1 type, H3N2 type or B type monovalent influenza totivirus after gradient density centrifugal purification and then deactivating is adopted, so that the virus cracking effect can be improved, the deactivation time can be shortened, the deactivation efficiency can be increased, the using amount of a deactivator can be obviously reduced, deactivation operation steps can be simplified, the contamination risk can be reduced, factory buildings, facilities and energy consumption required for deactivation can be reduced, and the uniformity and the stability of deactivation can be increased.

The invention provides a preparation method of carbon nanodots with efficient antibacterial properties, and belongs to the technical field of carbon-based materials. The preparation method includes the following steps: placing a biomass material in a liquid medium and conducting reaction at 140-180 DEG C for 2-6 h to obtain the carbon nanodots with efficient antibacterial properties, wherein the biomass material is a natural biomaterial with antibacterial properties. The invention also provides application of the carbon nanodots prepared by the preparation method of the carbon nanodots with the efficient antibacterial properties in resisting gram-positive bacteria. The preparation method is based on cheap biomass as a precursor to synthesize the carbon nanodots by a hydrothermal method. The preparation method is simple and easy to obtain. The synthesized carbon nanodots have efficient photodynamic performance, and especially have inactivation efficiency of 99.5% of above.

The invention relates to a water treatment disinfection method for controlling nitration of a water supply pipe network and belongs to the technical field of disinfection in water treatment. The occurrence of nitration in a chloramine disinfection water supply pipe network is controlled by the water treatment method which comprises the following steps: maintaining allowance of disinfectant in the water pipe network by using chlorine dioxide as a primary disinfectant and chloramine as a secondary disinfectant, and inactivating nitrobacteria by using chlorine dioxide and chlorite generated in the disinfection process. In the method, chloramine is added in the proportion of 1.5-2.0mg / L for carrying out secondary disinfection after chlorine dioxide which is added in the proportion of 0.8mg / L-1.0g / L reacts for 30 minutes. In the method, the inactivating effect on the nitrobacteria is improved on the basis of the high-efficiency inactivating function of nitrite which is generated during the disinfection process of chlorine dioxide on the nitrobacteria, thereby controlling nitrification in the chloramine disinfection pipe network and guaranteeing microorganism safety of drinking water.

The invention relates to a method for preparing safe and nutritional soybean milk; a motor, a crushing cutter, a heating device and a cup body are provided; the method at least includes a crushing stage and a heating stage; the crushing stage includes a step of adopting the motor to drive the crushing cutter to rotatingly crush a material and a step of allowing the motor to stop working; the heating stage includes a step of adopting the heating device to heat a liquid in the cup body and a step of allowing the heating device to stop heating, wherein after the temperature of the liquid in the cup body is 80 DEG C or more, the total time for heating the liquid in the cup body by the heating device is 4 to 15 minutes. Therefore, urease and trypsin inhibitors in the soybean milk can be fully inactivated, and thus the soybean milk is allowed to be more nutritional and safer.

The invention relates to a bi-directional ventilation superficial-layer static composting device and a method for composting by utilizing the same, and relates to a composting device and a method for composting by utilizing the same, aiming at solving the problems of the traditional composting technology that the land occupation area is large, the composting period is long, the odor caused by mechanical pile turning is large and the dosage of a regulation agent is large. The bi-directional ventilation superficial-layer static composting device comprises a fermentation cabin, a fermentation trough, a fermentation cabin top cover, an upper gas inlet-outlet pipe, a middle gas inlet-outlet pipe, a lower gas inlet-outlet pipe, an upper-lower ventilation fan, a middle ventilation fan, a bottom gas inlet-outlet valve, a top gas inlet-outlet valve, a middle gas inlet-outlet valve, a top exhaustion valve and a bottom exhaustion valve. The method comprises the following steps: I, mixing waste and compost to obtain a mixture I, and laying the mixture I in the fermentation trough; II, gradually fixing the fermentation trough in the fermentation cabin layer by layer, and loading the top cover on the fermentation cabin; III, changing the ventilation direction by opening and closing corresponding valves; and IV, after the fermentation, taking out the fermentation trough, mixing one part of fermented material and waste to obtain a mixture II which is used for the next composting fermentation, and taking the other part of the fermented material as a product to be sold. The bi-directional ventilation superficial-layer static composting device and the method are applied to the field of composting fermentation.

The invention relates to the technical field of vaccine production, in particular to an automatic inactivation system capable of guaranteeing sterility of a concentrated solution and an inactivation effect in vaccine production. The system comprises a kettle body and a concentrated solution tank, a motor is arranged below the kettle body, an output shaft of the motor is connected with a stirring rod extending into the kettle body, a controller is mounted on one side of the kettle body, the upper part of the kettle body communicates with a solution pipe, the other end of the solution pipe extends into the concentrated solution tank, the inside of the concentrated solution tank communicates with an air pipe, a charging machine is fixed and mounted at the top end of the kettle body and comprises a fixed cover and an electric push rod, a push rod end of the electric push rod is fixedly connected with a solution storage box, a solution inlet groove is formed in one side of the upper end ofthe solution storage box, a solution addition tank is fixed and mounted in the fixed cover through a support, the bottom end of the solution addition tank communicates with a solution discharge pipe extending into the solution inlet groove, the top end of the solution addition tank is connected with a solution inlet pipe and an automatic solution addition pipe, so that automatic and efficient inactivation can be realized in the whole inactivation process, the inactivation efficiency is improved, and the inactivation effect is improved.

The invention provides a biological wastewater inactivation pipeline system. The scheme is as follows: the biological wastewater inactivation pipeline system comprises a liquid storage tank, an inactivation tank and a cooling tank which are sequentially connected in series from a feed pipeline to a discharge pipeline, wherein the tops of the liquid storage tank, inactivation tank and cooling tank are respectively provided with a liquid inlet, and the bottoms are respectively provided with a liquid outlet; the liquid inlet of the liquid storage tank is the system inlet, and the liquid outlet of the cooling tank is the system outlet and is connected to a sewage treatment site; the bottom of the inactivation tank is provided with a steam injector, and the top is provided with a steam outlet; a jacket structure is installed inside the cooling tank; and the lower part of the jacket structure is provided with a cooling water inlet, and the upper part is provided with a cooling water outlet. The inactivation and cooling circulation are operated in the respective tanks, thereby enhancing the inactivation efficiency of the overall system, reducing the heat consumption in the waste liquid cooling process, simplifying the design and having high reliability.

The invention belongs to the field of pharmaceutical production and particularly relates to a biological vaccine inactivation device and a control method. The biological vaccine inactivation device comprises a thermostatic water tank, a vaccine inactivation tank and controllers, wherein the thermostatic water tank is equipped with a temperature sensor, a three-point liquid level sensor and electric heating tubes, as well as a water replenishing solenoid valve; the vaccine inactivation tank is equipped with a stirring motor, stirring paddles and a temperature sensor, and a heat-insulating jacket is arranged outside the vaccine inactivation tank; a thermostatic water pump, temperature-controlled pneumatic valves and hand-operated valves are assembled between the thermostatic water tank and the vaccine inactivation tank; the controllers consist of a thermostatic water tank level controller, a thermostatic water temperature controller, a vaccine inactivation tank temperature controller and a stirring timing controller; the thermostatic water tank is used for providing a constant-temperature water source required for inactivation; the vaccine inactivation tank temperature controller is used for measuring the temperature of the vaccine inactivation tank to control the thermostatic water pump and the temperature-controlled pneumatic valves to start or stop to pump thermostatic water into the jacket of the vaccine inactivation tank so as to keep the temperature of the vaccine inactivation tank constant. The biological vaccine inactivation device and the control method can improve the biological vaccine inactivation efficiency.

The invention discloses a porous material with a surface modified nano-structure array and application thereof. The porous material comprises a porous material substrate and a nano-structure array constructed on the porous material substrate in situ; wherein a surface modification layer is arranged on the surface of the nanostructure of the nanostructure array, and the surface modification layer is used for increasing the adhesive force of the nanostructure to microorganisms. The porous material is applied to disinfection and comprises the steps that the porous material with the surface-modified nanostructure array is placed in flowing fluid, the fluid passes through gaps of the nanostructure array in a shuttling mode in a filtering type flow state, and in the shuttling flowing process, microorganisms make contact with the nanostructures. Therefore, the microorganisms are torn through the flow field force generated by the fluid and the adhesion force of the nanostructure to the microorganisms, so that the microorganisms are physically crushed to realize disinfection.

The invention discloses an air disinfection and purification device based on plasma in-situ coupling nano-catalysis, which comprises a shell, a power supply, a connecting piece and at least one catalytic discharge unit. The connecting piece and the catalytic discharge unit are arranged in the shell; the connecting piece is connected with the shell; the catalytic discharge unit is connected with the connecting piece; the catalytic discharge unit comprises a first electrode assembly and a second electrode assembly which are connected with a power supply; a plasma field is generated between the first electrode assembly and the second electrode assembly; a nano-catalyst is arranged between the first electrode assembly and the second electrode assembly; the nano-catalyst is arranged in the plasma field; an air inlet and an air outlet are formed in the shell; and airflow in the shell passes through the plasma field and is in contact with the nano catalyst. The air disinfection and purification device provided by the invention integrates the functions of dust removal, organic pollutant removal, sterilization and disinfection and the like, and has the advantages of being high in energy utilization rate, obvious in sterilization effect, compact and simple in structure, small in overall size and the like.

The invention relates to a method for cooperatively controlling effluent microorganisms and disinfection byproducts of a sewage treatment plant, which comprises the steps of (1) adding a pypocholoride disinfectant into pretreated effluent of a secondary sedimentation tank of the sewage treatment plant, and uniformly stirring to obtain primarily treated sewage; (2) carrying out ultraviolet radiation treatment on the primarily treated sewage; and (3) continuously adding a hypochlorite disinfectant into the sewage subjected to ultraviolet radiation treatment in the step (2), and uniformly mixing for reaction, thereby completing the process. Compared with the prior art, the method provided by the invention does not need a complex and lengthy operation process, and can realize improvement of the microbial inactivation efficiency and effective reduction of the generation amount of DBPs by changing the combination sequence of conventional sodium hypochlorite disinfection and ultraviolet disinfection processes.

The invention discloses a tobacco bio-enzyme inactivation device which comprises a machine shell, an inactivation area, a drying area, a cooling area and a moisture regaining area. The inactivation area, the drying area, the cooling area and the moisture regaining area are sequentially arranged in the machine shell in series. The inactivation area comprises a first conveying belt arranged in the machine shell, a first draught fan and a first heat exchanger, wherein the first draught fan and the first heat exchanger apply forces to the first conveying belt. The running speed of the first conveying belt is 3-8 m / min, the length of the first conveying belt is 1.5-8 m, and the temperature of the first heat exchanger is 80-125 DEG C. The invention further discloses a tobacco bio-enzyme inactivation method, the bio-enzyme inactivation can be carried out rapidly at a high temperature at the inactivation area and tobacco materials can be subjected to low-temperature slow baking in the drying area, so that on the basis that complete completion of bio-enzyme inactivation is guaranteed, the high-temperature baking time of the tobacco materials is shortened, the safety of tobacco products is improved, and the aroma loss of the tobacco materials is reduced.

The invention discloses a preparation method of a nano titanium dioxide photocatalytic antibacterial material, which comprises the following steps: calcining a cigarette filter at high temperature to obtain a carbonized cigarette filter, immersing the carbonized cigarette filter in a titanium dioxide growth solution, stirring, reacting the immersed carbonized cigarette filter at high temperature and high pressure, and cooling to obtain the nano titanium dioxide photocatalytic antibacterial material. And washing and drying the reaction product to obtain the carbonized cigarette filter loaded nano TiO2 antibacterial material. The cigarette filter tip is carbonized to serve as a loading material of nano TiO2, so that waste consumables are recycled, a new green and economical application is provided for daily waste, after the cigarette filter tip is carbonized, the ultra-porous structure in the cigarette filter tip can provide a larger specific surface region and a larger pore volume to load more nano TiO2 particles, and the cigarette filter tip can be used for preparing the cigarette filter tip. A reaction platform is provided for photocatalytic reaction, adhesion of reaction substances is facilitated, and the photocatalytic efficiency is effectively improved. The invention further discloses the nano titanium dioxide photocatalytic antibacterial material and application thereof.

The preparation method comprises the following steps: firstly, growing a compact ultrathin zinc organic framework heterostructure in situ to realize that O2 and OH <-> are effectively adsorbed and activated by metal sites under sunlight to form free radicals with strong oxidizing activity; furthermore, a bimetallic coupling silver-zinc organic framework heterogeneous material is prepared through Ag ion exchange, abundant antibacterial active sites are provided, and interface transfer between electrons and oxidative stress generation for killing bacteria are promoted; ag < + > in the solution and Zn < 2 + > on the surface of the catalyst are reduced to form superfine AgZn nano alloy particles, so that the antibacterial broad spectrum of the material is expanded, and the antibacterial rate of the material is increased. The preparation method disclosed by the invention is simple in process and mild in reaction condition; raw materials and equipment are cheap, easily available and low in cost; the synthesis time is short, the efficiency is high, efficient, lasting and safe broad-spectrum antibacterial disinfection is realized, and the method is suitable for large-scale production.

The invention discloses a porous material with a surface-modified nanostructure array and its application. The porous material includes: a porous material substrate, and a nanostructure array constructed in situ on the porous material substrate; wherein, in the nano The nanostructure surface of the structure array is provided with a surface modification layer, and the surface modification layer is used to increase the adhesion force of the nanostructure to microorganisms. The porous material is used for disinfection, including: placing the porous material with a surface-modified nanostructure array in a flowing fluid, so that the fluid shuttles through the gaps of the nanostructure array in a filter-like flow state, and during the shuttle flow During the process, the microorganisms are in contact with the nanostructures, and the flow field force generated by the fluid and the adhesion force of the nanostructures to the microorganisms tear the microorganisms and cause the microorganisms to be physically broken to achieve disinfection.

The invention provides a method and device for inactivating algae in ship ballast water by DSA anode electro-catalysis. According to the electro-catalysis, a DSA metal oxide coating electrode is adopted as an anode, and a carbon rod as a cathode; a titanium plate as an electrode substrate of the DSA metal oxide coating electrode, and the DSA metal oxide coating electrode is prepared through coating by adopting a thermal decomposition method. The preparation method of the DSA metal oxide coating electrode comprises the following steps of: mixing oxide organic solutions containing Ru, Ir, Sn andSb according to a certain proportion to form a coating solution; coating the coating solution on the surface of the titanium plate substrate; conducting drying for 5 min in an air blast drying box atthe temperature of 80 DEG C; conducting thermal decomposition for 5 min in a muffle furnace at the temperature of 500 DEG C; taking out a product, and cooling the product to the room temperature; completing one-time coating process; and repeatedly conducting coating for 15-20 times. The method can directly treat the ballast water; the inactivation rate of different types of algae in the ballast water can reach 99% or above; according to the method and device, an indirect oxidation effect is formed by virtue of original seawater conditions, so that the production rate of oxidative species is increased, and the inactivation efficiency of the algae is improved.

The invention discloses a disinfecting, sterilizing and virus-killing device, and belongs to the technical field of sterilization and disinfection devices. The disinfecting, sterilizing and virus-killing device comprises an assembly body, a corrugated pipe, a cover body, a controller and an ozone generator, wherein the assembly body is provided with an air outlet hole, the cover body is provided with an air inlet hole, and the air outlet hole is connected with the air inlet hole through the corrugated pipe; the controller, an air heater and the ozone generator are arranged in the assembly body; and an air pipe conversion device is arranged above the air heater and the ozone generator and communicates with the air outlet hole. The disinfecting, sterilizing and virus-killing device can be used for heating bedding and can rapidly realize disinfection, sterilization and killing of viruses; and the disinfecting, sterilizing and virus-killing device is low in cost, simple in structure, rapidand convenient to use and easy to store and carry, and can be widely applied to disinfection, sterilization and virus-killing of different living articles of daily use, production environments and public places.