218 results about "Bacterial pollution" patented technology

The invention discloses a self-adaptive control method for lead clothes disinfection, and relates to the technical field of intelligent control. The method comprises the following steps: constructing a lead clothes management library, obtaining a lead clothes demand condition, obtaining lead clothes use parameters and material parameters, obtaining a self-adaptive control instruction through a self-adaptive disinfection control model, monitoring the lead clothes disinfection process in real time, adaptively adjusting disinfection parameters, and optimizing the self-adaptive disinfection control model by using a disinfection historical record. According to the method, the self-adaptive disinfection control model is used for matching the first batch of recommended disinfection modes according to the lead garment material parameters, the demand index and the bacterial pollution index are calculated, the optimal second batch of disinfection modes are dynamically selected from the recommended disinfection modes, and the disinfection parameters are adjusted by using real-time monitoring data.

The invention discloses a fermentation humidifying culture device for biological colony synthesis, and relates to the technical field of fermentation humidifying culture devices.The fermentation humidifying culture device comprises a first box body, a water storage tank is installed at the top of the first box body, a heating box is installed at the top of the water storage tank, and a third water passing pipe is installed at the output end of the front face of the water storage tank; and a second electromagnetic valve is installed at the output end of the third water passing pipe, a water pump is installed at the top of the first box body, and a fourth water passing pipe is installed at the output end of the water pump. Water can be heated and sterilized through the heating box, so that the situation that bacteria in water pollute bacterial colonies and affect growth of target bacterial colonies when external water enters the first box body for humidification can be avoided, and fan blades are driven by a motor to rotate to convey air in the first box body into the heating box for steam sterilization; and meanwhile, water vapor in the heating box can enter the first box body, sterilization of the inner wall and the plate body of the first box body is achieved, and pollution of infectious microbes to normal bacterial colonies is reduced.

A method for contamination control when growing yeasts is provided. Bacterial contamination is controlled by using urea as the primary nitrogen source while simultaneously limiting the amount of nickel available to contaminating bacteria. Bacteria require nickel as a cofactor for urease enzymes in order to use urea for growth while yeasts do not require nickel as a cofactor for any enzymes. Nickel is limited by using metals in heat exchangers that do not leach nickel. Ethyl carbamate is limited by using a carbon / nitrogen ratio that consumes all urea during fermentation. After fermentation completes, yeast is recycled using centrifugation, enabling use of high concentrations of yeast to reduce fermentation time from 48 hours to 12 hours and to eliminate bacterial contamination from growth on free amino nitrogen.

The utility model provides a guide wire guiding tube for an interventional operation, which relates to the technical field of interventional operation tools and comprises at least a first tube body and a second tube body which are sleeved with each other and can slide relative to each other. The end, away from the first tube body, of the second tube body is fixedly connected with a connecting piece, a conveying channel is formed in the connecting piece, one end of the conveying channel is communicated with the second tube body, a duckbilled elastic supporting piece is arranged at the other end of the conveying channel, the exposed section of the guide wire is fixed through elastic force, and slipping or pollution is prevented. A guide wire which is not implanted into a blood vessel is completely wrapped in the device and is physically isolated from the external environment, so that contact with pollutants is effectively avoided, and the problems that at present, medical staff need to wear sterile gloves to manually support an in-vitro guide wire section, sterile guarantee for the guide wire is insufficient, particles or microorganisms are prone to being left on the surfaces of the gloves, and bacterial contamination is possibly caused by long-time contact with the guide wire are solved. The postoperative infection risk is increased.

The application discloses a sealing transportation mechanism of a combined cover. The combined cover can be turned over for transportation, dust and bacteria carried by the combined cover are avoided from polluting the liquid medicine, and the structure is simple and convenient to use. The sealing transportation mechanism comprises a linkage production line, a plug pressing area and a turnover area are arranged on the linkage production line in parallel, the plug pressing area and the turnover area are arranged at the rear end of a track platform and are arranged in parallel with the track platform, a plug pressing assembly for pressing the combined cover is arranged on the plug pressing area, and a turnover assembly for turning over the combined cover is arranged on the turnover area.

A method for bacterial contamination control of heterotrophic growth of green algae is provided. Bacterial contamination is controlled by using urea as the primary nitrogen source while simultaneously limiting the amount of nickel available to contaminating bacteria. Bacteria require nickel as a cofactor for urease enzymes in order to use urea for growth while green algae do not require nickel as a cofactor for any enzymes. Green algae use biotin as a cofactor to use urea and are biotin prototrophic. Nickel is limited by using titanium in plate heat exchangers instead of stainless steel. The preferred green algae are Chlorella sorokiniana, Chlorella vulgaris, and Auxenochlorella protothecoides.

The application discloses a low-temperature storage system for biological pesticides, which comprises a storage box body, a switch door arranged at the lower end of the storage box body, a storage mechanism arranged in the storage box body and used for supporting a pesticide bottle tray, and a transfer mechanism arranged at the left side of the storage mechanism and used for transferring the pesticide bottle to the supporting mechanism; when the pesticide bottles are stored, the switch door is opened, the transfer mechanism takes the tray filled with the pesticide bottles and places the tray into the storage mechanism, automatic placement of the pesticide bottles is realized, labor intensity is reduced, manual intervention is reduced, and bacterial pollution is prevented.

The invention discloses a paramecium enrichment-based single-cell cyanobacteria separation and purification method and application. The method comprises the following steps: putting a single-cell cyanobacteria solution into a sterile BG11 conical flask; the method comprises the following steps: adding a paramecium solution with known concentration into a sterile BG11 conical flask filled with a single-cell cyanobacteria solution to obtain a mixed solution of paramecium and single-cell cyanobacteria; placing the sterile BG11 conical flask filled with the mixed solution of paramecia and single-cell blue-green algae in a first culture environment for culture to obtain a blue-green algae and paramecia enriched solution; transferring the blue-green algae and paramecium enrichment solution to a sterilized BG11 agar plate for plate coating treatment, and inversely placing the BG11 agar plate in a second culture environment for culture until blue-green algae falling without infectious microbes is formed; and carrying out expanding culture on the bacterial-free cyanobacteria colony to obtain bacterial-free single-cell cyanobacteria. The method can greatly shorten the time of traditional isolated culture of single-cell cyanobacteria, and can prevent bacterial pollution of the external environment.

The utility model relates to the technical field of emulsion pumps, and provides an all-plastic recyclable pressing emulsion pump which comprises an installation cover and a combination cover, the combination cover is installed at the top end of the installation cover, an installation structure is arranged in the installation cover, a piston rod is arranged in the combination cover, and a pressing head is arranged at the top end of the piston rod. By arranging the pressing structure, the pressing head is pressed to drive the piston rod so as to push the piston sleeve to enable the pressing rod to be pressed downwards, so that the spring is compressed, the space in the pump body is reduced, the pressure is increased, and emulsion sucked by the suction pipe is extruded out of the spraying cavity through the pump body; due to the fact that the upper reverse blocking bead is arranged in the liquid container, the emulsion cannot flow back into the liquid container through the pump body, the liquid can only be squeezed out upwards by rushing through the upper reverse blocking bead, meanwhile, the upper reverse blocking bead and the lower reverse blocking bead block the channel under the action of gravity without being squeezed by external pressure, and the emulsion can be effectively prevented from being polluted by external bacteria.

The utility model relates to the technical field of medical care appliances, and particularly discloses a 3D printing oral cavity protection mold which comprises a body, a mounting shell fixedly connected to the outer side of the body, a first spring arranged in the mounting shell, a fixing block slidably connected to the interior of the mounting shell, a supporting ring fixedly connected to the bottom of the fixing block, and a baffle slidably connected to the bottom of the mounting shell. A medicament pipe is slidably connected into the supporting ring, a piston is slidably connected into the medicament pipe, a push rod is fixedly connected to the outer side of the piston, two push blocks are fixedly connected to the outer side of the push rod, and a replacement mechanism is fixedly connected to the end, away from the push blocks, of the medicament pipe. In the prior art, bacteria on the hands are attached to cleaning cotton, when medicine is applied to the diseased and injured part of a patient, the bacteria pollute the diseased and injured part, and the rehabilitation efficiency of the patient is reduced.

The utility model discloses an anti-backflow water meter which comprises a water meter body and further comprises a water inlet pipe, an installation block and a water return prevention device. The water inlet pipe is fixedly connected with a water inlet of the water meter body, a mounting block is integrally arranged in the water inlet pipe, and a mounting cavity with an opening in the upper end is formed in the mounting block; and the water return prevention device is detachably mounted in the mounting cavity. According to the water return prevention device, the water return prevention device is independently arranged in the water inlet pipe, when maintenance is needed, a pipeline does not need to be disassembled, later maintenance and replacement are facilitated, meanwhile, water cannot be stored in the water return prevention device, and bacterial pollution is avoided; and by arranging the first sealing gasket and the second sealing gasket, the backwater prevention device is installed in the installation cavity in a dual-sealing mode through the first sealing gasket and the second sealing gasket, and the device can be effectively prevented from leaking water.

The embodiment of the utility model discloses an electric toothbrush handle and an electric toothbrush. The electric toothbrush handle comprises a shell and a sealing rubber sleeve, the shell is provided with a containing cavity and an avoiding hole communicated with the containing cavity, and the avoiding hole is used for a motor shaft to penetrate through; and the sealing rubber sleeve is arranged in the avoiding hole, the sealing rubber sleeve is used for sealing a gap between the hole wall of the avoiding hole and the motor shaft, and an antibacterial structure is arranged at the end, exposed out of the shell, of the sealing rubber sleeve. According to the electric toothbrush handle disclosed by the embodiment of the utility model, the sealing rubber sleeve can be prevented from being polluted by bacteria, and the healthy and sanitary conditions of the handle are improved. The electric toothbrush disclosed by the embodiment of the invention comprises the electric toothbrush handle.

The utility model discloses a candy packaging paper structure with a multi-layer antibacterial coating component, which comprises an outer paper shell, an antibacterial mechanism is arranged in the outer paper shell and used for packaging candies, the antibacterial mechanism comprises a sealing unit and is arranged in an inner cavity of the outer paper shell and used for sealing internal candies, the sealing unit comprises edible gum, and the edible gum is arranged in the inner cavity of the outer paper shell and used for sealing the internal candies. The edible gum is fixedly smeared on an inner cavity of the outer paper shell, and the surface of the edible gum is fixedly connected with an inner film. According to the candy packaging paper structure with the multi-layer antibacterial coating assembly, the edible glue is fixedly smeared in the inner cavity of the outer paper shell, the surface of the edible glue is fixedly connected with the inner film, and the candies are fixed in the inner film, so that the problem of ink leakage caused by friction of candy packaging paper due to factors such as extrusion in the transportation process of the candies is solved; the problems of chemical pollution of an external package and bacterial pollution in air are solved, double-layer paper is connected through glue, and protection of candies is increased.

The utility model provides a refrigerator door body egg rack and a refrigerator. The refrigerator door body egg rack comprises a door body outer door, a door body inner door, egg rack partition plates and egg rack egg supports. The door body outer door is arranged on the side, away from a refrigerator refrigerating box body, of the refrigerator door body. The door body inner door is arranged on the side, close to the refrigerator refrigerating box body, of the refrigerator door body. The door body outer door is hinged to the door body inner door; the egg rack partition plate and the egg rack egg support are arranged inside the door body inner door, and the egg rack egg support is arranged on the egg rack partition plate. The space of the refrigerator door body is utilized to improve the egg storage capacity, eggs can be conveniently and rapidly taken and placed by opening and closing the outer door of the door body, the eggs and other food of the refrigerator are stored separately, bacteria on the surfaces of the eggs are prevented from polluting the other food of the refrigerator, and the service life is prolonged. Meanwhile, the eggs can be prevented from being polluted by smell volatilized by other foods in the refrigerator, so that the problems that the egg rack is small in capacity and cross contamination is generated with other foods in the refrigerator are solved.

The utility model belongs to the technical field of food processing, and particularly relates to a sausage sterilization device which comprises a sterilization box and a conveying assembly, a cleaning assembly, an air drying assembly and a sterilization assembly are arranged in the sterilization box, the sterilization box is a left-right through box body, and the conveying assembly penetrates through the sterilization box and sequentially penetrates through the cleaning assembly, the air drying assembly and the sterilization assembly. The conveying assembly comprises a conveying belt, a roller, a roller support and a hook, the cleaning assembly comprises a spray head and a water tank, the air drying assembly comprises a fan exhaust outlet, and the sterilization assembly comprises a plurality of ultraviolet sterilization lamps; according to the device, sausages do not make contact with sterilization equipment and a conveying device, it is guaranteed that the sausages are not polluted by external bacteria, continuous sterilization can be achieved through the sausage sterilization device, the sterilization efficiency is high, and the processing efficiency and the processing quality of the sausages are guaranteed.

The invention relates to the technical field of coatings, and discloses a high-adhesion and high-hardness modified epoxy coating for a PC glass plate and a preparation method of the high-adhesion and high-hardness modified epoxy coating. The epoxy coating is prepared from the following raw materials in parts by weight: 20 parts of epoxy resin, 10-20 parts of modified epoxy resin, 15-20 parts of a curing agent, 1-3 parts of modified attapulgite, 2 parts of polycarbonate resin, 0.5-1 part of a dispersing agent, 0.1-0.5 part of a coalescing agent, 0.2-0.4 part of a defoaming agent and the balance of deionized water, the prepared epoxy coating has excellent mechanical properties, has good bonding performance with a PC glass plate, has long-acting antibacterial performance when being applied to the PC glass plate, and can hinder bacterial pollution.

The utility model discloses environment-friendly antibacterial household paper which is characterized in that a protection mechanism is arranged outside a winding drum and comprises a first protection sleeve and a second protection sleeve which are arranged outside the winding drum from left to right, and a paper outlet is formed in the outer side of the second protection sleeve; fixing holes are formed in one side of the first protective sleeve and one side of the second protective sleeve, positioning pins are symmetrically arranged on one side of the second protective sleeve, and positioning holes are symmetrically formed in one side of the first protective sleeve; a protective mechanism is arranged on the outer side of the degradable paper layer, the protective mechanism comprises a reinforcing layer arranged on the outer side of the degradable paper layer, an antibacterial layer is arranged on the outer side of the reinforcing layer, and a skin-friendly layer is arranged on the outer side of the antibacterial layer. The utility model relates to the technical field of paper for daily use. And through the arrangement of the second protection mechanism, the antibacterial property of the household paper can be achieved through an antibacterial layer in the protection mechanism, and the situation that use is affected due to bacterial pollution is avoided.

The automatic salted duck egg bagging equipment comprises a bag body conveying mechanism, a bagging mechanism and a duck egg conveying mechanism, the bag body conveying mechanism is installed at the head end of the bagging mechanism, bag bodies are conveyed to the bagging mechanism through the bag body conveying mechanism, the duck egg conveying mechanism is arranged on one side of the bagging mechanism, and the bagging mechanism is arranged on the other side of the bagging mechanism. A material clamping mechanism is arranged at the tail end of the bagging mechanism, and the bag bodies filled with the bags are conveyed to the next procedure through the material clamping mechanism; and automatic bagging of the salted duck eggs is conveniently achieved, the bagging efficiency is improved, meanwhile, bacterial pollution is reduced, and the labor cost is reduced.

The utility model discloses an instrument trolley for an interventional operation, and relates to the technical field of instrument trolleys. The instrument trolley for the interventional operation comprises a storage box, supporting legs are fixedly connected to the corners of the lower surface of the storage box, moving wheels are fixedly connected to the bottoms of the supporting legs, a hanging seat is fixedly connected to the outer surface of the storage box, a top cover is arranged on the top of the storage box, and a hanging plate is fixedly connected to the lower surface of the top cover; the bottom of the inner surface of the storage box is fixedly connected with a supporting sleeve, the interior of the supporting sleeve is slidably connected with a guide rod, the top of the supporting sleeve is fixedly connected with a supporting plate, the top end of the guide rod is fixedly connected with a supporting plate, the inner wall of the storage box is fixedly connected with an ultraviolet disinfection lamp, and the upper surface of the supporting plate is provided with an upper tray. A fixing mechanism and a first connecting seat are fixedly connected to the side of the upper surface of the supporting plate, and a fixing seat is fixedly connected to the inner surface of the upper tray, so that instruments can be prevented from being polluted by bacteria in air, and the practicability of the instrument trolley is improved.

The invention discloses full-automatic bacterium experiment equipment and a use method thereof.The full-automatic bacterium experiment equipment comprises a box body, a partition plate is arranged in the middle of the box body, the box body is divided into two completely independent operation areas through the partition plate, one side is a bacterium cryopreservation box, and the other side is a bacterium operation box; two symmetrical sealing door devices are respectively arranged above and right in front of the box body, ultraviolet lamp devices are arranged on the inner sides of the symmetrical sealing door devices above the box body, a motor and a refrigerating and heating temperature control system device are arranged below the box body, an operation panel is arranged on the upper left portion of the box body, full-automatic bacteria operation software is arranged in the operation panel, and the upper left portion of the box body is provided with a control panel. The operation panel is connected to the computer through a panel line. The full-automatic bacterium experiment equipment can replace manual operation of bacteria, the full-automatic operation steps are simple and efficient, the problem of bacterium pollution caused by misoperation is avoided, and the experiment safety and the experiment result accuracy are improved.

The utility model discloses a feed particle curing and sterilizing device which comprises a bottom plate, supports are fixedly assembled at the four corners of the surface of the bottom plate, a shell is installed on the four supports, a top cover is buckled at the top end of the shell, a heater is installed on the bottom face of the top cover, a rotating rod rotationally penetrates through the inner wall of the shell, and the inner wall of the rotating rod is provided with a rotating shaft. The two ends of the rotating rod extend to the outer side of the shell, and a stock bin is arranged in the shell. The supporting rod is connected to the rotating rod, the rotating rod drives the stock bin to move together through the connecting rod, the stock bin drives feed particles to move together, and the purpose of turning over is achieved, through cooperation of the discharging pipe and the bottom cover, the steel wire mesh with the proper hole diameter is selected for machining the stock bin, and chippings mixed in the particles continuously fall out of the stock bin and fall onto the bottom cover along the inner wall of the shell. Chippings can be discharged by opening the bottom cover, accumulation of the chippings is avoided, cleaning is convenient, and the situation that the chippings stay in the shell for a long time, breed bacteria and pollute the internal environment of the shell is prevented.

The invention relates to an auxiliary device for taking microneedle patches, which comprises a shell, and a top cap assembly, a suction cup assembly and a grabbing assembly which are mounted in the shell, the top cap assembly and the shell form a moving pair, and the suction cup assembly comprises a connecting rod and a suction cup; the top cap assembly is provided with an air inlet hole and makes contact with one end of the connecting rod when pressed to the set length, the other end of the connecting rod is connected with the suction cup, and the air inlet hole communicates with the suction cup through a first through hole in the connecting rod. The grabbing assembly comprises a supporting part and a hook claw. The supporting part sleeves the outer side of the connecting rod, and the hook claw is rotatably installed on the side, close to the suction cup, of the supporting part. Compared with the prior art, the device has the advantages that the hook claws mechanically grab the microneedle patches, so that physical damage to the microneedles can be avoided, and the microneedle patches can be prevented from being polluted by bacteria on hands due to the fact that the microneedle patches are not manually contacted; and the device is small and portable as a whole, is simple to operate, and can be widely used for taking patches in various fields.

A method for contamination control when growing yeasts is provided. Bacterial contamination is controlled by using urea as the primary nitrogen source while simultaneously limiting the amount of nickel available to contaminating bacteria. Bacteria require nickel as a cofactor for urease enzymes in order to use urea for growth while yeasts do not require nickel as a cofactor for any enzymes. Nickel is limited by using titanium in plate heat exchangers instead of stainless steel. Ethyl carbamate is limited by using a carbon / nitrogen ratio that consumes all urea during fermentation and by separating co-products after fermentation and before distillation. Yeast recycling is performed by using either single-step or two-step centrifugation, without acid washing. This method enables yeast recycling with sugarcane ethanol and sugar beet ethanol production. This method also enables yeast recycling with corn ethanol and grain ethanol production with coproduct recovery after fermentation and before distillation.

The direct drinking machine comprises a direct drinking machine body, a containing concave position is formed in the front upper side of the direct drinking machine body, and connecting protruding parts protruding towards the middle are arranged on the left side wall and the right side wall in the containing concave position; the direct drinking machine further comprises a rotating water outlet module arranged in the containing concave position, the left side and the right side of the upper portion of the rotating water outlet module are each provided with a hinge opening used for being hinged to the connecting protruding part, and a water outlet used for discharging water is formed in the lower side of the rotating water outlet module. Through the arrangement of the containing concave position, the rotary water outlet module can be protected from interference and damage of the external environment, and the water outlet hole is hidden through the rotary water outlet module hinged to the containing concave position; therefore, the water outlet hole can be prevented from being exposed in a natural space for a long time and polluted by dust or bacteria, the healthy drinking water standard of the direct drinking machine can be further improved, and the use experience and drinking water safety of a user are ensured.

The utility model discloses a foot mask paster packaging bag which comprises a bag body and a bag opening part, the bag opening part is vertically arranged at the top end of the bag body and is integrally formed with the bag body, a writing paster is arranged on one side of the bag body, the writing paster and the bag body are bonded through glue, a sealing paster is arranged at the edge position of the bag opening part, the sealing paster and the bag opening part are bonded through glue, and the bag opening part is connected with the bag body. According to the foot mask patch packaging bag, the interior of the bag body is divided into two independent storage cavities, and independent storage spaces can be provided for brand new foot mask patches and foot mask patches with reuse value respectively; according to the novel foot mask sticker, bacterial contamination caused by used foot mask stickers can be avoided, meanwhile, a good storage environment can be provided for the used foot mask stickers, a user can conveniently record the storage time of the secondarily stored foot mask stickers through the writing sticker arranged outside the novel foot mask sticker, and expiration is avoided.

The invention discloses a curved disinfection temperature control water supply device for animal husbandry and veterinary medicine, and relates to the technical field of animal husbandry water supply, the curved disinfection temperature control water supply device comprises a water supply assembly, the inner side of the water supply assembly is provided with a filter assembly, the bottom of the water supply assembly is provided with a circulation assembly, and a heating assembly is arranged between the water supply assembly and the circulation assembly; a disinfection assembly is arranged on the outer side of the water supply assembly, an activated carbon filter layer is mounted at the top of the filter assembly, and quartz sand is mounted at the bottom of the activated carbon filter layer. Through the activated carbon filter layer, primary filtration can be carried out when a water source is supplied into the water supply assembly, meanwhile, the water source permeates into quartz sand to be further filtered, and then purification treatment is carried out through filter cotton, so that the quality of the water source is improved in a multi-filtration treatment mode; the healthy water using effect of the livestock is guaranteed, bacterial pollution inside a water source is reduced, and the situation that the livestock gets ill due to water source pollution is effectively prevented.

The application relates to the technical field of orthopedic repair material preparation, and discloses a sterile preparation and injection device for autologous red blood cell drug-loaded blood gel, which comprises a cross bolt mixer, a multimodal injector combined with a composite syringe and a mixing flow channel, the cross bolt is internally integrated with a microfluidic mixing channel, a vertical shaft direction and a coronal shaft direction are respectively connected with a main injector and a drug-loaded injector, when the red blood cell-rich plasma enters the bolt, longitudinal shear force is generated through a spiral flow channel, so that bone morphogenetic protein suspension is vertically injected into a main flow channel through a one-way valve structure, equal ratio mixing of 4:1 is realized in the spiral channel, and the whole mixing process is completed in a closed system. The device has the advantages of realizing accurate and uniform mixing of the red blood cell-rich plasma and the drug in a sterile environment, reducing the risk of bacterial contamination, being capable of directly injecting and filling bone defects for the prepared blood gel, being excellent in biological safety and compatibility, and being low in preparation cost and simple in process.

The invention discloses a culture medium filling device, and relates to the technical field of filling machines. The device comprises a bottom frame, one end of the bottom frame is connected with a conveying mechanism used for conveying storage tanks, and the other end of the bottom frame is connected with a bottle cap screening disc used for conveying plug caps; the rotating bearing disc comprises a rotating disc rotationally installed on the bottom frame, and a plurality of vertical grooves used for bearing the storage tanks are formed in the rotating disc in a circumferential array mode; and the gland assembly comprises an installation frame fixedly connected to the bottom frame, one side of the installation frame is fixedly connected with a supporting frame, and an air cylinder barrel is fixedly connected into the supporting frame. The storage tank can be automatically conveyed to the rotating bearing disc through the conveying mechanism, then the feeding assembly automatically injects materials, the bottle cap screening disc and the cap pressing assembly are matched to achieve automatic cap buckling operation, human intervention is not needed in the whole process, the automation degree is increased, time and labor are saved, meanwhile, the situation of bacterial contamination caused by personnel operation is avoided, and the production efficiency is improved. And the safety of the device is improved.

The present disclosure describes a process for the use of peracid compositions to eliminate and / or control the growth of undesirable bacteria, including contaminating bacteria, in water systems is disclosed. Beneficially, the peracid compositions and methods of use of the same are effective in reducing or eliminating both planktonic and sessile bacterial contamination.

The present application relates to the technical field of pet products, and provides a pet fresh food dining device, which comprises a shell, a conveyor belt and a cutting device. The shell comprises a base and an upper cover, the upper cover is rotationally connected with the base, the base comprises a dining area and a recycling area, the upper cover is provided with an avoiding hole corresponding to the dining area, and the recycling area is provided with a containing space; one end of the conveyor belt is wound around a reel, the other end of the conveyor belt sequentially passes through the dining area and the recycling area, and the other end of the conveyor belt extends into the containing space; the cutting device is arranged at the entrance of the containing space, the cutting device comprises a shielding part and an execution part, the shielding part can move to the side where the conveyor belt is located with the execution part, and when the execution part cuts the conveyor belt, the shielding part closes the opening of the containing space. In this way, the recycling area can recycle the conveyor belt with fresh food residues in time, and the conveyor belt is closed and stored, so that the peculiar smell emitted by the conveyor belt is prevented from spreading, and the bacteria pollution of the whole conveyor belt is prevented, which is not conducive to the diet health of pets.