61results about How to "Reduce biofouling" patented technology

A system and method to reduce fouling of a surface subjected to an aquatic environment with a light source. According to one aspect, an antifouling system including an LED for emitting UV radiation, one or more mounts for directing emitted UV radiation toward the surface, and control circuitry for driving the LED disposed in a watertight housing. According to another aspect, an antifouling system which employs a fluorescent lamp disposed within a pressure vessel including a UV-transmissive material to allow UV light to pass through the pressure vessel and reduce bio-fouling of any surface.

The invention discloses a method for preparing a polyaniline modified neutral conductive filter membrane and belongs to the technical field of conductive filter membrane modification and preparation in the field of conductive composite materials. The method is characterized in that phytic acid with high conductivity is doped with polyaniline under neutral conditions, the low-cost filter material is subjected to conductive modification, and good conductive performance is kept under the neutral conditions. The doped polyaniline is firmly loaded, and the good filtering separation performance of the filter cloth is kept; the conductive performance is improved due to graphene modification; the non-conductive filter material is modified into a filter membrane with high conductivity, the application range of the filter membrane is widened, and the filter membrane is particularly suitable for applying a micro electric field to relieve the membrane pollution and other membrane charging processes. The method has the beneficial effects that the graphene polyaniline is combined with the filter material, and the conductivity of the filter membrane is greatly improved, particularly the conductivity under the neutral conditions; and therefore, the modified low-price filter material is a conductive filter membrane and has wide application prospects in the fields of membrane charging process and water treatment thereof.

The present invention provides a method of treating a reverse osmosis membrane for boron rejection enhancement, comprising contacting the reverse osmosis membrane with a chemical coating such as PHMB, wherein the reverse osmosis membrane is part of a single-pass reverse osmosis system is configured to reduce the boron concentration of normal seawater or brackish water to less than a predetermined amount.

The present invention provides a method of treating a reverse osmosis membrane for boron rejection enhancement, comprising contacting the reverse osmosis membrane with a chemical coating such as PHMB, wherein the reverse osmosis membrane is part of a single-pass reverse osmosis system is configured to reduce the boron concentration of normal seawater or brackish water to less than a predetermined amount.

Anti-fouling coating compositions and methods of making and using those compositions are provided. In an embodiment, a coating composition comprises ceramic nanoparticles, wherein the coating composition is capable of inhibiting contaminants from adhering to a solid surface.

A biodelivery system has been found which increases the efficiency and effectiveness of introducing antimicrobial compounds into complex biofilm matrices through the use of liposome carriers, thereby removing the biofouling in industrial water bearing systems, including piping, heat exchanges, condensers, filtration systems and fluid storage tanks.According to one embodiment of the invention, antimicrobial compound containing liposomes are added to water systems prone to biofouling and biofilm formation. The liposomes, being similar in composition to microbial membranes or cells, are readily incorporated into the existing biofilm. Once the antimicrobial compound containing liposomes become entrained with the biofilm matrix, the decomposition or disintegration of the liposome proceeds. Thereafter the biocidal core is released to react directly with the biofilm encased microorganisms. Upon the death of the organisms, the matrix decomposes and thereby results in reduced fouling of the water bearing system, resulting in increased heat transfer, increased flux, less deposit of colloidal and particulate solids and dissolved organics on the surface of the microfiltration membrane, thereby reducing the frequency and duration of the membrane cleaning and ultimate replacement.

A process has been found which increases the efficiency and effectiveness of introducing antimicrobial compounds into complex biofilm matrices through the use of liposome carriers, thereby removing the biofouling in industrial water bearing systems, including piping, heat exchanges, condensers, filtration systems and fluid storage tanks.According to one embodiment of the invention, antimicrobial compound containing liposomes are added to water systems prone to biofouling and biofilm formation. The liposomes, being similar in composition to microbial membranes or cells, are readily incorporated into the existing biofilm. Once the antimicrobial compound containing liposomes become entrained with the biofilm matrix, the decomposition or programmed disintegration of the liposome proceeds. Thereafter the biocidal aqueous core is released to react directly with the biofilm encased microorganisms. Upon the death of the organisms, the polysaccharide / protein matrix decomposes and thereby results in reduced fouling of the water bearing system, resulting in increased heat transfer, increased flux, less deposit of colloidal and particulate solids and dissolved organics on the surface of the microfiltration membrane, thereby reducing the frequency and duration of the membrane cleaning and ultimate replacement.

The invention provides a closed raceway pond microalgae culture system, which consists of a carbon supply area, a culture area and an oxygen removal area and is closed by adopting an anti-fog film and a water seal mode. The bottom part of the culture area is provided with a heat exchange pipeline; the head space of the culture area is provided with a circulating ventilation system; and an online monitoring device for physiological, biochemical and nutrient elements is arranged in the culture area to realize the online monitoring and control for microalgae culture. The carbon supply area is provided with an enhanced carbon dioxide carbon supply device and an algae fluid circulating stirring device. The oxygen removal area has the functions of oxygen removal and a nutrient element charging pond, and the bottom of the oxygen removal area is provided with an air-blowing oxygen removal system. The carbon supply area and the culture area are communicated with each other; the oxygen removal area is closed singly; and culture fluid is communicated with the carbon supply area and the culture area through a downtank. The culture system has the advantages of less investment, easily amplifiedscale, good carbon supply effect, small biological pollution and the like, and can be used for sewage treatment, carbon dioxide gathering and residual heat utilization, thereby having remarkable economic benefit and excellent environmental benefit.

A process has been found which increases the efficiency and effectiveness of introducing antimicrobial compounds into complex biofilm matrices through the use of liposome carriers, thereby removing the biofouling in industrial water bearing systems, including piping, heat exchanges, condensers, filtration systems and fluid storage tanks. According to one embodiment of the invention, antimicrobial compound containing liposomes are added to water systems prone to biofouling and biofilm formation. The liposomes, being similar in composition to microbial membranes or cells, are readily incorporated into the existing biofilm. Once the antimicrobial compound containing liposomes become entrained with the biofilm matrix, the decomposition or programmed disintegration of the liposome proceeds. Thereafter, the biocidal aqueous core is released to react directly with the biofilm encased microorganisms. Upon the death of the organisms, the polysaccharide / protein matrix decomposes and thereby results in reduced fouling of the water bearing system, resulting in increased heat transfer, increased flux, less deposit of colloidal and particulate solids and dissolved organics on the surface of the microfiltration membrane, thereby reducing the frequency and duration of the membrane cleaning and ultimate replacement.

A process has been found which increases the efficiency and effectiveness of introducing antimicrobial compounds into complex biofilm matrices through the use of liposome carriers, thereby removing the biofouling in industrial water bearing systems, including piping, heat exchanges, condensers, filtration systems and fluid storage tanks.According to one embodiment of the invention, antimicrobial compound containing liposomes are added to water systems prone to biofouling and biofilm formation. The liposomes, being similar in composition to microbial membranes or cells, are readily incorporated into the existing biofilm. Once the antimicrobial compound containing liposomes become entrained with the biofilm matrix, the decomposition or programmed disintegration of the liposome proceeds. Thereafter the biocidal aqueous core is released to react directly with the biofilm encased microorganisms. Upon the death of the organisms, the polysaccharide / protein matrix decomposes and thereby results in reduced fouling of the water bearing system, resulting in increased heat transfer, increased flux, less deposit of colloidal and particulate solids and dissolved organics on the surface of the microfiltration membrane, thereby reducing the frequency and duration of the membrane cleaning and ultimate replacement.

An improved stabilized biocidal delivery system has been found which increases the efficiency and effectiveness of introducing antimicrobial compounds into complex bio-film matrices through the use of liposome vesicular carriers, thereby removing the bio-fouling in industrial water bearing systems, including piping, heat exchanges, condensers, filtration systems and fluid storage tanks. The improved stabilized biocide is comprised of a vesicle encapsulated biocide that is stabilized against chemical and heat degradation over longer periods of time than previously possible through the incorporation of a stabilizer compound.

The present invention generally relates to polymeric membrane materials formed, at least in part, from monomeric material selected from 2,3,3,3-tetrafluoropropene (CF3CF═CH2, HFO-1234yf) or trans-1,3,3,3-tetrafluoropropene (CF3CH═CFH, HFO-1234ze), and to membrane preparations and uses thereof in water desalination, filtration, membrane distillation, pervaporation, and selective gas separation.

The invention belongs to the biologic field of micro algae, relating to a method for cleaning inner wall of pipeline type photobioreactor pipe in micro algae culture. Magnetic sphere is placed into a pipeline type photobioreactor, culture solution flows when being pushed by power, the magnetic sphere randomly enters into the pipeline of photobioreactor along with the culture solution and does directional movement or slides under manual regulation of a control system outside the pipeline, and the magnetic sphere continuously slightly collides and rubs pipe wall in circulated moving process in the photobioreactor pipeline, so that algae cell material adhered onto transparent pipeline inner wall is rubbed into liquid phase used for culturing micro algae, the pipeline photobioreactor pipeline is effectively cleaned and light transmission thereof is maintained. The invention can effectively clean cells into algae liquid phase at initial stage of adherence, or substance such as cell adhered to the inner wall of the pipeline type photobioreactor pipe is removed, restriction of micro algae cell adherence to micro algae cell culture is overcome, and good light transmission and culture effect of photobioreactor are maintained.

A process has been found which increases the efficiency and effectiveness of introducing antimicrobial compounds into complex biofilm matrices through the use of liposome carriers, thereby removing the biofouling in industrial water bearing systems, including piping, heat exchanges, condensers, filtration systems and fluid storage tanks. According to one embodiment of the invention, antimicrobial compound containing liposomes are added to water systems prone to biofouling and biofilm formation. The liposomes, being similar in composition to microbial membranes or cells, are readily incorporated into the existing biofilm. Once the antimicrobial compound containing liposomes become entrained with the biofilm matrix, the decomposition or programmed disintegration of the liposome proceeds. Thereafter, the biocidal aqueous core is released to react directly with the biofilm encased microorganisms. Upon the death of the organisms, the polysaccharide / protein matrix decomposes and thereby results in reduced fouling of the water bearing system, resulting in increased heat transfer, increased flux, less deposit of colloidal and particulate solids and dissolved organics on the surface of the microfiltration membrane, thereby reducing the frequency and duration of the membrane cleaning and ultimate replacement.

Hydrophobic polymer particles (e.g., granules or fragments) employed as filter media, e.g., for filtering runoff water, include an antimicrobial compound on exterior surfaces and can reduce proliferation of microbial organisms as well as sorb chemical contaminants from the water. By employing this dual decontamination action, filter systems employing such particles can improve the quality of runoff water (or other contaminated water streams) and reduce the risk presented by potentially harmful organisms.

The invention discloses an automatic lifting type water quality monitoring device for an aquaculture pond. The device comprises a floater capable of floating on water, a cable winch is mounted on the floater, a floater body below the cable winch is provided with a through hole, and a sensor cable of a water quality sensor is wound on the cable winch to rotate along the cable winch. The water quality sensor is downwardly submerged in water through the through hole of the floater and capable of changing depth in water along with rotation of the cable winch. A junction box is arranged on the floater body, and the cable of the water quality sensor and a cable of a step motor which drives the cable winch are connected to the junction box on the floater. A controller and a wireless communication module are arranged in the junction box, and the junction box is connected to a power supply box on the bank of the pond.

Hydrophobic polymer particles (e.g., granules or fragments) employed as filter media, e.g., for filtering runoff water, include an antimicrobial compound on exterior surfaces and can reduce proliferation of microbial organisms as well as sorb chemical contaminants from the water. By employing this dual decontamination action, filter systems employing such particles can improve the quality of runoff water (or other contaminated water streams) and reduce the risk presented by potentially harmful organisms.

The invention provides a colloidal gold immunoassay instrument, which comprises an equipment bottom plate, a reagent strip rotary loading unit, a sample unit, a sample loading unit, a reaction disc unit and a detection unit, wherein the equipment bottom plate is used for providing an installing space; the reagent strip rotary loading unit is used for automatically loading a reagent strip; the sample unit is arranged on the equipment bottom plate and is used for providing a sample to be detected; the sample loading unit is arranged on the equipment bottom plate and is used for loading the sample to be detected on the sample unit; the reaction disc unit is arranged on the equipment bottom plate and is used for receiving the reagent strip loaded by the reagent strip rotary loading unit and the sample to be detected, loaded by the sample loading unit; the sample to be detected takes a reaction with the reagent strip; the detection unit is used for receiving the reacted reagent strip on thereaction disc unit and performs detection. The colloidal gold immunoassay instrument provided by the invention can realize the simultaneous detection of various samples; the functions are various; the installation of the reagent strip is convenient; the structure is simple.

A mixture for treating water in a biological water treatment process is provided comprising an organic-based flocculant, a micronutrient; and a polymer. The flocculant, the micronutrient and the polymer are mixed in a predetermined ratio to enhance said biological water treatment. The mixture is particularly suited to enhancing flocculation of particles, reducing fouling on a surface of a membrane in a membrane bioreactor, improving uptake of phosphorous and / or nitrogen by a biomass in a biological water treatment system, improving bioactivity of a biomass and / or floc in a biological water treatment system and improving flux in a membrane bioreactor.

Use of bacterial cells of the genus Tenacibaculum, from the crude cellular extract or from its cultivation supernatants, capable of degrading N-acyl homoserine lactones, for quorum quenching, for treatment of infectious bacterial illnesses or to inhibit formation of biofilms.

The invention discloses an antifouling titanium alloy material based on a bionic super-smooth surface and a preparation method and application thereof. The preparation method comprises the steps: a titanium alloy substrate is treated through an anodic oxidation method, a nanostructure layer arranged in an array mode is formed on the surface of the titanium alloy substrate, and the nanostructure layer comprises nanopores or nanotubes with different morphologies and / or sizes; chemical modification is carried out on the titanium alloy substrate with the nanostructure layer by using a fluorosilanemodifier; and a lubricant is applied to the surface of the titanium alloy substrate subjected to chemical modification, and the antifouling titanium alloy material based on the bionic super-smooth surface is obtained. The bionic super-smooth surface can obviously reduce the attachment amount of bacteria on the surface of the titanium alloy, has a remarkable antibacterial attachment effect and anexcellent slow release effect, and meanwhile, the preparation method of the bionic super-smooth surface is a green, environment-friendly and efficient antifouling method and has a wider application prospect in the marine antifouling field.

The invention discloses a rheid liquid-filled underwater glider with nearly neutral buoyancy. The glider comprises a rheid liquid-filled cabin, a pressure-resistant cabin, a front fairing, a rear fairing, a wing unit, a buoyancy adjusting unit, a posture adjusting unit, a main control unit and an antenna unit; the rheid liquid-filled cabin is made of a flexible skin and assembled outside the pressure-resistant cabin and can be filled with compressible liquid; an outer skin of the buoyancy regulating unit is in direct contact with seawater, and a high-pressure pump and an inner fuel tank of thebuoyancy adjusting unit, the posture adjusting unit and the main control unit are arranged in the pressure-resistant cabin; the front fairing and the rear fairing are arranged at the front end and the rear end of the pressure-resistant cabin respectively; the wing unit is arranged on the rear fairing, and the antenna unit is arranged at the tail of the rear fairing. The glider can realize passivebuoyancy compensation based on marine environment pressure and temperature changes, the glider has nearly neutral buoyancy in the running process, and energy consumption caused by buoyancy adjustmentin the moving process of the glider is reduced.

The invention discloses a multifunctional blood collection device suitable for collection of a trace blood sample. The device includes a blood collection tube and a sealing member, wherein the sealingmember is installed on the blood collection tube, venous puncture and vacuum blood collection are realized through the sealing member, and the blood collection tube is divided into a blood collectionsection and a collection section; and a blood guide tube mouth is formed in the blood collection section, the blood guide tube mouth is provided with an outer edge and a flow guide slope which are used for guiding a liquid into the collection section for collection, and the bottom of the collection section is closed. Venous blood is collected when the sealing member is connected with the blood collection tube, peripheral blood collection is achieved when the blood collection section is isolated from the sealing member, so that needs of venous blood collection and peripheral blood collection are met at the same time, the multifunctional blood collection device is matched with an existing automatic labeling on-line machine, and multifunctional blood collection and standardized processing are achieved.

A streamer usable underwater for a marine seismic survey has a portion adjacent to a protuberance covered by an adhesive antifouling tape or substrate. The tape, which may be made of copper or copper alloy is configured to be fast fastened, may be applied when the streamer is deployed and may be covered by a protective jacket during recovery.

According to the present invention, an implantable device comprising an electrode for carrying an electric signal to or from a biological cell or tissue provided. The electrode material is chosen to exhibit desirable properties in terms of electrical conductivity, biocompatibility and bio-fouling. The invention further provides implantable devices comprising such implantable electrodes.

A relatively low cost, highly productive, scalable culture vessel, and method to grow photosynthetic organisms, in particular autotrophic algae, is provided. The culture vessel can be constructed of a transparent plastic enclosure. One or more thin sheets, films, droplets, or streams of a free falling suspension of organism in liquid media can be continuously formed within an enclosure. The free falling media can fall into a collector or pool at the bottom of the enclosure. The media can then be recirculated to the top of the enclosure to once again form into a free falling sheet, curtain, droplets, etc. The organisms (e.g., algae) can then be harvested from a collector.

A biodelivery system has been found which increases the efficiency and effectiveness of introducing antimicrobial compounds into complex biofilm matrices through the use of liposome carriers, thereby removing the biofouling in industrial water bearing systems, including piping, heat exchanges, condensers, filtration systems and fluid storage tanks.According to one embodiment of the invention, antimicrobial containing liposomes are added to water systems prone to biofouling and biofilm formation. The liposomes, being similar in composition to microbial membranes or cells, are readily incorporated into the existing biofilm. Once the antimicrobial compound containing liposomes become entrained within the biofilm matrix, the decomposition or disintegration of the liposome proceeds. Thereafter the biocidal core is released to react directly with the biofilm encased microorganisms. Upon the death of the organisms, the matrix decomposes and thereby results in reduced fouling of the water bearing system, resulting in increased heat transfer, increased flux, less deposit of colloidal and particulate solids and dissolved organics on the surface of the microfiltration membrane, thereby reducing the frequency and duration of the membrane cleaning and ultimate replacement.

The invention belongs to the biologic field of micro algae, relating to a method for cleaning inner wall of pipeline type photobioreactor pipe in micro algae culture. Magnetic sphere is placed into a pipeline type photobioreactor, culture solution flows when being pushed by power, the magnetic sphere randomly enters into the pipeline of photobioreactor along with the culture solution and does directional movement or slides under manual regulation of a control system outside the pipeline, and the magnetic sphere continuously slightly collides and rubs pipe wall in circulated moving process in the photobioreactor pipeline, so that algae cell material adhered onto transparent pipeline inner wall is rubbed into liquid phase used for culturing micro algae, the pipeline photobioreactor pipelineis effectively cleaned and light transmission thereof is maintained. The invention can effectively clean cells into algae liquid phase at initial stage of adherence, or substance such as cell adheredto the inner wall of the pipeline type photobioreactor pipe is removed, restriction of micro algae cell adherence to micro algae cell culture is overcome, and good light transmission and culture effect of photobioreactor are maintained.

A biodelivery system has been found which increases the efficiency and effectiveness of introducing antimicrobial compounds into complex biofilm matrices through the use of liposome carriers, thereby removing the biofouling in industrial water bearing systems, including piping, heat exchanges, condensers, filtration systems and fluid storage tanks.According to one embodiment of the invention, antimicrobial compound containing liposomes are added to water systems prone to biofouling and biofilm formation. The liposomes, being similar in composition to microbial membranes or cells, are readily incorporated into the existing biofilm. Once the antimicrobial compound containing liposomes become entrained with the biofilm matrix, the decomposition or disintegration of the liposome proceeds. Thereafter the biocidal core is released to react directly with the biofilm encased microorganisms. Upon the death of the organisms, the matrix decomposes and thereby results in reduced fouling of the water bearing system, resulting in increased heat transfer, increased flux, less deposit of colloidal and particulate solids and dissolved organics on the surface of the microfiltration membrane, thereby reducing the frequency and duration of the membrane cleaning and ultimate replacement.