72 results about "Low intensity ultrasound" patented technology

A non-invasive apparatus and method for increasing saliva and tear production from the salivary and lacrimal glands with the application of high frequency low intensity ultrasound. An ultrasound transducer coated with connecting gel placed in contact with the facial tissues transmitting 1.5 MHz frequency ultrasound pressure waves into the tissues and into the glands. The time-averaged intensity of the ultrasound pressure waves is typically limited to approximately 30 milliwatts per square centimeter to avoid tissue heating.

This invention relates to method and apparatus for treating interior electrolytic wastewater based on ultrasonication. The method utilizes low-intensity ultrasonic wave to intensify the electrolytic process and improve the treatment effect. Microfluidization effect of ultrasonication, shock wave damage, and H2O2 produced by cavitation during the ultrasonication process can activate the surface of iron chips, thus can effectively prevent the rust and agglomeration of iron chips, clean the surface of iron chips, and accelerate the reaction speed of interior electrolysis. The reaction apparatus is uniformly filled with iron chips and activated carbon particles. Besides, ultrasonication is used as an auxiliary. Ultrasonic cleaning can effectively prevent the blockage of iron and carbon bed. The method and apparatus are simple and rational, and have low cost. The method and apparatus can be widely used for treating organic pollutants in wastewater that are difficult to degrade, improving the ability of wastewater for biochemical treatment, and having high removing rates of color degree and COD of pigment wastewater.

The process of extracting pueraria polysaccharide includes the following steps: milling slurry with kudzu vine root, adding cellulase and protease into the slurry for enzymolysis and simultaneous low strength ultrasonic treatment, adding vitamin C and xylose for protecting color, filtering to eliminate fiber, centrifugally separating the filtrate to eliminate starch, vacuum concentrating the centrifugate, adding alcohol before further centrifugally separating to obtain wet pueraria polysaccharide, and drying to obtain pueraria polysaccharide product. The present invention has raised enzyme activity and substrate converting rate, raised extraction rate of polysaccharide and flavone, effective prevention of browning, and natural color of the product.

The present invention relates to an ultrasound coupling device that includes a gel component and a coupling compartment. The present invention also relates to various kits and methods for using the ultrasound coupling device with low-intensity ultrasound transducers and therapy. The present invention also relates to methods of making the ultrasound coupling device of the present invention. The present invention further relates to an array that includes a plurality of ultrasound coupling devices of the present invention, and methods of using the array.

The invention relates to a method for treating low-temperature sewage by using a low-intensity ultrasound-enhanced membrane bioreactor, and belongs to a treatment method of low-temperature municipal sewage. The method can effectively solve the problems in the prior art of complex process, high treatment cost, large energy consumption and poor denitrification effect. The method comprises the following steps: membrane assemblies (4) are suspended in a membrane pond (3), an aeration device (6) is arranged at the bottom of the membrane pond (3) to complete the oxygenation and aeration of the low-temperature sewage inside the membrane pond (3), and the low-temperature sewage inside the membrane pond (3) is exposed to the low-intensity ultrasonic irradiation; the ultrasonic transducers (5) of a low-intensity ultrasound generator is arranged on frames (4-2) on both sides of the membrane assembly (4-1); the purified sewage is sucked under negative pressure by the membrane assemblies and the discharge is controlled by an intelligent control discharge system (7), and the concentrated sludge is returned to an anaerobic pond (1). The invention has the advantages of simple process, high stability, low energy consumption, high efficiency and good denitrification effect.

The invention relates to a method of removing algae in water body by using low-intensity supersonic to intensify the coagulating course, belonging to water treating application field. The method intensifies the coagulating course by using low-intensity supersonic to improve coagulating effect, and removes algae in water without breaking the algae cell, first, damaging the air-pocket and photosynthetical system in the algae cell by using supersonic, to make the algae cell already flocculated and deposited will not flost and grow further; second, reducing the hydration layer of the algae cell and suspended matter particle by using supersonic, reducing zeta electric potential, improving the surface flocculability, and increasing the flocculability efficiency. Third, fastening the dispersion of flocculability agent by using supersonic, stimulating the reaction of flocculating agent with algae cell and floating particle and increasing the coagulating velocity. The refloating and further growing of algae already coagulated can be prevented by using this method, the flocculating agent consumption can be reduced, the degree of density of the flocculating product can be increased and the coagulating clearance can be improved.

The invention discloses a puerarin extraction process, relating to extraction of effective components in Chinese herbal medicine plants and belonging to the field of extraction processes. The puerarin extraction process is characterized by comprising the following steps: taking kudzu root, pulverizing at the low temperature of -4-0 DEG C, passing through a 30-100-mesh screen, adding distilled water which is 1-7 times by weight of kudzu root, immersing at room temperature for 5-8 hours, stirring with a stirrer to obtain a kudzu root slurry, adding an enzyme preparation to perform enzymolysis reaction while performing low-intensity ultrasonic treatment, carrying out solid-liquid separation and collecting the filtrate to obtain the kudzu root extract concentrated solution. The technique for extracting effective components of kudzu root has the advantages of high production efficiency, low requirements for equipment, high controllability, high operability and low energy consumption, is suitable for large-scale production of the kudzu root product, is beneficial to overall development and utilization of kudzu root resources, and has obvious economic benefit and social benefit. The kudzu root beverage prepared by the technique has the advantages of high nutrient content and good and diversified tastes, is convenient to drink, and is convenient for transportation and storage.

The invention discloses a biological denitrification promotion method using carbon sources supplemented by carrying out low intensity ultrasonic sludge disintegration and hydrolytic acidification on disintegrated sludge and straws and application of the method. The method comprises the following steps of: firstly, disintegrating residual sludge through low intensity ultrasonic; then mixing disintegrated sludge with straws and carrying out hydrolytic acidification; and finally refluxing liquid subjected to hydrolytic acidification. The method has the advantages that crop straws are preprocessed in the way of being soaked in the residual sludge, and hydrolase present in the residual sludge are fully utilized, so that the effect of preprocessing the crop straws is improved, no additional carbon source is required, and the biological denitrification efficiency is enhanced. The method can be applied to upgrading reconstruction of biotreatment techniques of anaerobic-anoxic-aerobic and anoxic-aerobic sludge treatment plants, the biological denitrification efficiency is enhanced, and the reclamation of sludge and crop straws are realized.

The invention discloses a hydrophobic mesoporous nanomaterial and a preparation method and application thereof. The hydrophobic mesoporous nanomaterial is prepared through condensation reaction of an ordered mesoporous material and a coupling reagent, wherein the coupling agent is selected from any one of the following formulae: Cl-SiR3 or RO-SiR3; and a group R contains a hydrophobic organic group. The hydrophobic mesoporous nanomaterial is introduced into a low-intensity ultrasonic system, the intensity of low-intensity ultrasonic cavitation effect can be enhanced; in-vitro and in-vivo experiments show that the hydrophobic mesoporous nanomaterial and the low-intensity ultrasonic have obvious synergistic effect and good cytocompatibility and relatively low cytotoxicity; and particularly, after solubilization, through combined use of the hydrophobic mesoporous nanomaterial with the low-intensity ultrasonic, the hydrophobic mesoporous nanomaterial can significantly inhibit the tumor growth and has a wide application prospect.

Methods of treating a subject suffering from a disease or a disorder associated with hyperproliferating cells. The method includes non-invasively administering to the subject ultrasound at a low intensity in a dose effective to selectively prevent the growth of the hyperproliferating cells or to eliminate the hyperproliferating cells in the subject, while substantially not affecting the cell viability of normal cells of the subject. The low intensity is pre-determined to be lower than a cavitational threshold intensity for a selected frequency.

The invention discloses a method for mixed fermentation of sludge disintegrated by low-strength ultrasonic wave and crop straws pretreated by fermentation broth and application of the method in improving mesophilic two-phase anaerobic digestion. The method comprises the following steps: mixing the sludge and the straw to perform hydrolytic acidification, wherein the sludge is pretreated by the low-strength ultrasonic wave; refluxing the straws with the hydrolytic acidified fermentation broth after the sludge and the straw are mixed; and mixing the straws treated by the fermentation broth with the sludge again, and performing hydrolytic acidification. The method provided by the invention improves mesophilic two-phase anaerobic digestion performance of the sludge, increases the gas yield and stability of the sludge, and shortens the anaerobic digestion time.

The invention discloses a method and an application of performing hydrolytic acidification to low-intensity ultrasound pretreated sludge and organic refuse to supply carbon source for promoting bio-denitrification. The method comprises the following steps: firstly utilizing low-intensity ultrasound to break the excess sludge, then mixing the pretreated excess sludge and organic refuse to perform hydrolytic acidification, at last refluxing the hydrolytic acidification liquid. The method has the advantages that the method can fully utilize the hydrolase in the excess sludge, improve the hydrolytic acidification effect, solve the problem that the carbon source for performing hydrolytic acidification in the excess sludge is not enough, and fully utilize the carbon source in the excess sludge and organic refuse, without external carbon source, and improve the bio-denitrification efficiency. The method can be used for biotreatment process upgrading transformation of anaerobic-hypoxia-aerobic or hypoxia-aerobic sewage treatment plant, improve the bio-denitrification efficiency, reduce yield of sludge, and realize recycling of the sludge and the organic refuse.

The invention belongs to the field of water processing, and particularly relates to a photosynthetic bacteria sewage treatment method. The method includes the steps that firstly, heterotrophism culturing of photosynthetic bacteria is conducted for 2 days to 3 days so as to make the photosynthetic bacteria be in the logarithmic phase; 5% to 50% of the volume of the photosynthetic bacteria liquid is inoculated into a photoreactor with waste water for batch cultivation, wherein the initial concentration of the adopted waste water ranges from 3000 mg/L to 10000 mg/L; meanwhile, low-frequency low-intensity ultrasonic wave stimulation is applied on the photosynthetic bacteria in the photoreactor for a certain time; finally, the photosynthetic bacteria in the photoreactor is recycled after being cultured 81 hours to 120 hours in the photoreactor, thallus carotenoid is extracted, and meanwhile, the pollutant removal condition in the waste water is monitored. According to the photosynthetic bacteria sewage treatment method, the yield of the photosynthetic bacteria and the yield of carotenoid are increased through low-intensity ultrasonic wave irradiation, and efficient accumulation of the photosynthetic bacteria and the carotenoid and waste water processing can be conducted synchronously.

The invention discloses a method for promoting the synthesis of microalgae oil by low frequency and low intensity ultrasound, aiming at the critical problem in the field of oil production from microalgae, i.e., the technical difficulty of how to improve the oil content in the microalgae. The method is characterized in that an ultrasonic probe is immersed in a microalgae culture solution which is cultured to a logarithmic phase; ultrasound is started to perform ultrasonic treatment on the microalgae, and circular treatment is carried out, wherein the ultrasonic frequency is 20-50kHz, the ultrasonic power is 10-30W/L, the ultrasonic treatment time is 15-35min/d, and the time interval of ultrasonic pulses is 1-6s; the treated microalgae are transferred to an illumination incubator for culture. The technique provides a new strategy for improving the oil content and cell biomass of the microalgae. The cultured microalgae has the advantages that not only is the synthesis amount of oil increased, but also the utilization rate of sugar and biomass are increased, which lays a good foundation for the industrialization development of the microalgae.

The present invention relates to an ultrasound equipment for treating edema, and more particularly, to an ultrasound equipment to relieve symptoms of edema or repair cellular and tissue edemas by generating 20˜400 mW/cm² of low intensity ultrasound and use thereof.

The ultrasound equipment according to the present invention comprises a main control unit equipped with a control unit for ultrasound generation for generating a 20˜400 mW/cm² of low intensity ultrasound, an ultrasound generator for generating ultrasound according to the operating state of the main control unit, an ultrasound vibrator vibrating according to the value of ultrasound data inputted from the ultrasound generator, and a probe for delivering ultrasound energy to a treatment site, and when the ultrasound equipment is used, it is possible to treat edema by increasing permeability in blood vessels.

The invention discloses a discharge treatment system for the produced water of a polymer flooding oilfield, and belongs to biochemical discharge treatment of tertiary oil recovery polymer-containing sewage of the oilfield. Sulfate reducing bacteria having polyacrylamide degradation ability are cultured and screened; the produced water of the polymer flooding oilfield is treated though a combined process comprising a sulfate reducing bacteria pretreatment unit, a hydrolytic acidification unit and a contact oxidation unit; the sulfate reducing bacteria pretreatment unit is used for partially degrading and removing residual HPAM (Hydrolyzed Polyacryamide) out of the sewage at first, so that the load of the subsequent treatment units is reduced; a low-intensity ultrasonic generator is used for increasing the activity of a microbial enzyme by performing irradiation treatment on the activated sludge so that the capacity of decomposition of microorganisms on organic matters is improved; several techniques are combined to achieve the synergistic effect for improving the overall treatment capacity and the applicability of the process to the produced water of the polymer flooding oilfield. The discharge treatment system provided by the invention is simple in process and easy to implement, and is expected to realize standard discharge of the produced water of the polymer flooding oilfield in combination with auxiliary units such as a sedimentation tank.

The invention discloses a method for performing mixed fermentation on low-intensity ultrasonically disintegrated sludge and crop straws and application of the method in improving mesophilic anaerobic digestion. The mixed fermentation is performed on the sludge and the crop straws, wherein the sludge is pretreated by low-intensity ultrasonic waves, and the straws are soaked by tap water in a pretreatment pool. The technical scheme provided by the invention is that the mesophilic anaerobic digestion performance of the sludge is improved, the gas output and the stability of the sludge are increased, and the anaerobic digestion time is shortened.

The invention belongs to the field of the radiotherapy of tumors, and relates to a system for promoting a bystander effect of radiotherapy by utilizing low-intensity ultrasound. The system comprises an imaging unit for performing image positioning on a tumor target region, a radioactive source for providing the radiotherapy for the tumor target region and an ultrasound source for performing ultrasound irritation on the tumor target region, so that the tumor target region is subjected to low-intensity ultrasound irritation while being subjected to the radiotherapy, wherein the intensity range of the ultrasound source is between 10 and 3,000mW/cm<2> preferably, and the frequency range is between 20 KHz and 1MHz preferably. By the system, the bystander effect of the radiotherapy of the tumors can be promoted, and the effect of the radiotherapy can be improved.

The invention belongs to the field of urban sludge resource treatment, and discloses a method for extracting protein from sludge by low-intensity ultrasonic enhanced enzymolysis. The method comprisesthe followings steps: firstly, adding an enzyme preparation to the sludge, then placing the sludge with the enzyme preparation in a low-intensity ultrasonic system to enhance activity of enzyme, and placing the enhanced enzyme and sludge in a hydrolysis system for enzymolysis reaction. Activity of the enzyme preparation is enhanced by the low-intensity ultrasonic system, so that the reaction process of enzyme hydrolysis on sludge is further promoted, reaction time of sludge enzymolysis is shortened, the extraction rate of protein from the sludge is increased, energy consumption during sludge treatment by ultrasonic combined with enzyme is reduced, and the method is an economical and efficient method for extracting protein from the sludge.

The invention discloses the technical field of nanocellulose and particularly discloses a method for preparing nanocellulose from low-strength ultrasonic-assisted amino acid ionic liquid and application of the nanocellulose. The method includes the following operation steps that smashed corn straw and amino acid ionic liquid are evenly mixed at a certain temperature and processed for a certain period of time to obtain a mixture; the solid and liquid mixture is placed in an ultrasonic water bath instrument for ultrasonic treatment; the processed mixture is subjected to centrifugal separation and drying to obtain solid nanocellulose. The nanocellulose prepared in the method is rich in raw material source, simple in equipment, easy to operate and suitable for large-scale production. The prepared NCC is uniform in grain size, good in performance, high in yield and capable of being used in the field of flexible electronic display screens.

The invention relates to an operation method of low intensity supersonic waves for strengthening the treatment effect of a continuous flow biological reaction tank. A supersonic generator is arranged at a return sludge pump well of a municipal sewage plant; a part of return sludge is treated by supersonic waves intermittently for a plurality of times or is treated by the supersonic waves continuously for two times; and the sludge needing to be treated by supersonic waves returns to the biological reaction tank together with the sludge being and without being radiated and treated by the supersonic waves. The low intensity supersonic waves improve the capacity for treating swage by improving the activity of microbes in activated sludge in a biological treatment system, and further effectively improve the quality of water after being treated.

The invention belongs to novel wastewater biological nitrogen removal processes, and discloses a method for intensifying the starting performance of an anaerobic ammonia oxidation process which takes ordinary activated sludge as an inoculum by using ultrasonic waves. An ultrasonic generator main machine is arranged outside an anaerobic ammonia oxidation starting reactor, and an ultrasonic wave vibrator is submerged below the liquid level inside the reactor. By irradiating culture sludge of the anaerobic ammonia oxidation process starting process by using low-intensity ultrasonic waves, the cytomembrane permeability, the electron transfer speed and the functional enzymatic activity of anaerobic ammonium oxidation bacteria are improved, so that the activity and flora competitive advantages of the anaerobic ammonium oxidation bacteria in the culture sludge are improved, and rapid starting of the process is achieved. By adopting the method, both the starting period of the anaerobic ammonia oxidation process is shortened, and the anaerobic ammonia oxidation bacteria can be domesticated in the activated sludge, and a technical support and stain reservation are provided for the industrialization process of the anaerobic ammonia oxidation process. The method has the advantages that the reaction condition is gentle and free of secondary pollution, the device is simple in structure and easy to operate, and the bacteria grow fast and are high in bioactivity, resistant to load impact and good in stability.

The invention discloses an animal and plant cell large-scale culture device. The device comprises a culture tank, wherein an insulating water tank is arranged at the inner bottom of the culture tank;a groove is formed in the upper part of the insulating water tank; a culture dish is arranged inside the groove; a water permeating hole communicated with the inside of the insulating water tank is formed in one side of the bottom of the groove; ultrasonic vibration plates are respectively arranged on two sides inside the insulating water tank; an ultrasonic generator is arranged inside the culture tank; a temperature sensor for detecting the temperature inside the insulating water tank is arranged on the side wall of the insulating water tank; a gas inlet pipe and a gas outlet pipe are respectively communicated with two sides of the culture tank; and a dust-proof filter screen and an ultraviolet sterilizing lamp are arranged inside the gas inlet pipe. According to the animal and plant cell large-scale culture device, cells can be carried out under the situation of heating a culture dish in water bath due to the design of adding the insulating water tank, the culture dish and the ultrasonic generator, and are stimulated through intermittent low-intensity ultrasonic wave to promote cell reproduction.

An ultrasonic irradiation apparatus includes an ultrasonic resonator capable of generating ultrasound, a driving unit configured to drive the ultrasonic resonator, a case holding the ultrasonic resonator and the driving unit, an acoustic matching layer provided between the ultrasonic resonator and the case, and an acoustic diffusion layer made of an ultrasound diffusing material configured to diffuse high intensity ultrasound emitted from the ultrasonic resonator and convert the high intensity ultrasound into low intensity ultrasound with low intensity per unit area and radiate in a large area. The ultrasonic resonator is a piezoelectric resonator, the ultrasound diffusing material of the acoustic diffusion layer is made of a metal material of an acoustic impedance of at least 40, and the acoustic diffusion layer is provided in at least one of inside of the acoustic matching layer, inside of the case, and outside of the case.

The invention belongs to the technical field of air purification equipment, and relates to an indoor formaldehyde degradation device. The device is based on microbial degradation of harmful gas formaldehyde in indoor air, is provided with an ultrasonic generator, and uses low-intensity ultrasonic waves to break water molecules; formaldehyde is dissolved in water, and then is efficiently degraded by a formaldehyde-degrading strain, and allows formaldehyde in the air is dissolved in a liquid medium at the maximum efficiency to maximize the dissolution of formaldehyde. The formaldehyde-degradingstrain taking formaldehyde as a sole carbon source and nitrogen source and growing on a biofilm is utilized to degrade formaldehyde and maximize the degradation of formaldehyde; the device has the advantages of simple structure, convenience in use, low cost, and high operability and practicability, can effectively adsorb and degrade indoor formaldehyde, improve the dissolution rate and the degradation rate of formaldehyde and purify other pollutants in the air, degrades indoor formaldehyde at the highest efficiency, improves indoor air quality, and has great practical significance and use value.