310 results about "Bio film" patented technology

Systems and methods for removal of bacterial biofilm from a target site of a human patient includes a surgical instrument having an introducer for bodily insertion and maintaining an irrigation duct and a nozzle. A distal portion of the introducer is transitionable between a plurality of bend angles relative to a proximal portion thereof. In particular, the instrument is adapted to independently maintain the distal portion at each of the plurality of bend angles relative to the proximal portion. The nozzle is maintained relative to the distal portion of the introducer and is adapted to dispense pressurized irrigant from the irrigation duct toward a layer of bacterial biofilm.

The present invention relates to methods and compositions for rendering a surface resistant to bio-film formation by a combination of an alkanediol and an antimicrobial agent (and, optionally, an organic hydroxy acid). The invention provides for compositions which may be used to render surfaces bio-film resistant, articles having bio-film resistant surfaces, and methods for their preparation. The present invention may be advantageously applied to medical articles as well as articles used in non-medical contexts, such as child care or food preparation.

The invention discloses a method for treating coking wastewater, which belongs to the field of wastewater treatment. The method comprises the following steps that: wastewater of a coking plant enters a regulating reservoir for the adjustment of water quality and water amount, and orderly enters a hydrolytic tank, an anaerobic tank, a preaeration tank, a preliminary sedimentation tank, an aerobic tank, a secondary sedimentation tank and a coagulation reaction tank for treatment, wherein the hydrolytic tank and the preaeration tank are filled with a bio-cord filler; the sludge of the preliminary sedimentation tank refluxes into the hydrolytic tank and the anaerobic tank respectively; a clarifying solution of the secondary sedimentation tank refluxes into the anaerobic tank; and the aerobic tank adopts a moving bed bio-film reactor. The bio-cord filler adopted in the invention has short film formation time and high biomass, does not need repeated washing, and has strong shock resistance; and the moving bed bio-film reactor can fix a large amount of nitrobacteria with long generation time, and has no the problem of blocking. The method can remove high-concentration ammonia nitrogen and organic substances in the coking wastewater, and the COD and the ammonia nitrogen of treated effluent can synchronously achieve the primary standard of the national integrated wastewater discharge standard (GB9878-1996).

The present invention relates to rhamnolipid-based formulations to clean, disinfect, deodorize, and act as an antimicrobial and antifungal agent for living and working environments. In addition, the present invention relates to the use of rhamnolipids to create a bio-film when applied to a surface, which prevents the growth of bacteria and fungus. This technique is especially useful to create clean surface areas for medical procedures, chemical testing, during food preparation, as well as for daycare centers and hospitals.

The invention discloses an ecotype enclosed method for culturing fish through circulation water. Natural seawater, underground salt water, underground fresh water and geothermal water are mainly utilized and mixed, and an industrial culture foundation for producing pollution-free healthy seafood is built and used. A solid-liquid separation purification device is used for replacing sand filtration of a biological filter, ammonia nitrogen and nitrite nitrogen are degraded after water passing through a biological film on biological filler in the biological filter, and the total purification rate of water body particles is over 99%. An aeration pond is arranged to conduct aeration and oxygenation on a culture water body to enable the content of dissolved oxygen in water in a fish culture pond to be kept at 8-14mg/L, finally the water body is sterilized through ultraviolet light, clean ecological water is input into the fish culture pond, and the return water in the fish culture pond is purified repeatedly and utilized in a circulating mode. Sewage discharged from a culture system is purified by an open-air pond and flows back to a water storage sedimentation pond to achieve zero-discharge complete enclosed circulation water factory-like fish culture.

The invention discloses integrated technology for reclaiming lightly-polluted printing and dyeing waste water or printing and dyeing waste water achieving a certain discharge standard through deep purification treatment for production. A related process of the technology mainly comprises an adjusting tank, a pressure moving bed bio-film reactor, a ceramsite and activated carbon biological filter, an air floating system, a laminated filter and an ultra-filtration and reverse osmosis system. The technology is characterized in that the technology improves the prior biochemical technology, and carries out process integration by combining technology such as ozone oxidation, air flotation, membrane separation and the like. The regeneration of the printing and dyeing waste water can be realized by adopting the treatment technology, and the regenerated water quantity can reach 70 to 80 percent; and the technology not only can effectively solve the pollution problem of the printing and dyeing industry and protect the environment, but also can provide theoretical and technical support for realizing closed-loop circulation of the printing and dyeing waste water and popularizing clean production in the printing and dyeing industry.

This invention relates to solid cleaning compositions and the method for using the solid compositions to clean appliances and other soiled surfaces. The solid cleaning composition is generally comprised of a majority by weight of a cleaning active system; ingredients for forming the cleaning active system into a solid form; and optionally, a fragrance. The solid cleaning composition is ideally suited for reducing and/or eliminating microbial growth, including biofilm growth, contained within and/or on appliances, particularly those appliances that have water contact surfaces such as washing machines and dishwashers. The solid cleaning composition further provides reduction and/or elimination of undesirable odor and staining typically associated with such microbial growth.

The invention discloses a composite moving bed bio-film reactor. The composite moving bed bio-film reactor comprises a reactor body; a hollow sphere filler is filled in the reactor body; an aeration device is arranged at the bottom in the reactor body; an inner cylinder and an outer cylinder which are sleeved are also arranged in the reactor body; the upper and lower ports of the inner cylinder and the outer cylinder are completely opened; the lower part of the outer cylinder wall is provided with a water inlet pipe; an inclined tube sedimentation tank is arranged between the outer cylinder and the reactor body; the outer cylinder wall below the inclined tube sedimentation tank is provided with a sedimentation tank water inlet; and the reactor body above the inclined tube sedimentation tank is provided with an overflow channel, the upper edge of the overflow channel is lower than the outer cylinder wall, and the bottom of the overflow channel is provided with a water outlet pipe. According to the technical scheme of the composite moving bed bio-film reactor with simple structure, low manufacturing cost and small floor area, the advantages of a traditional moving bed bio-film reactor, a three-phase biological fluidized bed, a biological contact oxidation method and an active sludge method are organically combined.

The invention provides a wastewater treatment and reuse method for a paper mill. The method comprises the following steps: (a) physical treatment: providing wastewater from the paper mill, and removing the cellulose and other foreign impurities in the wastewater from the paper mill to obtain the wastewater from the paper mill after the physical treatment; (b) biochemical treatment: performing biochemical treatment and deposition to the paper mill wastewater obtained in the step (a) after the physical treatment to obtain safe pool water conforming to the required emission standard; and (c) advanced treatment: providing air-floatation water after super-efficient shallow air-floating treatment in a machine room and merging the air-floatation water with the safe pool water obtained in the step (b) to obtain intermediate water, and then performing intermediate water advanced treatment, i.e. adding drugs into the intermediate water, coagulating, depositing and filtering to obtain purified water; and performing fiber bunch or the biological film technical treatment to the purified water to obtain effluent.

A method and composition and system which for the oxidation, clean up, removal and control of iron and iron deposits in water and the removal of iron deposits and bacterial bio-films from surfaces in water systems. The composition contains sodium chlorite, sodium hypochlorite and citric acid.

A flow of oxygen containing gas is irradiated with UV light to convert oxygen molecules to ozone molecules and produce an ozonated gas. Water to be treated is augmented with silver prior to entraining the ozonated gas in the water. The ozone enriched water containing silver is irradiated with UV light to produce hydroxyl radicals. Whereby, microorganisms are killed by the UV radiation, organic matter is oxidized by the ozone and the combination of silver and hydroxyl radicals prevent downstream growth of bio-film contamination.

The invention relates to a combined microelectrolytic/biological membrane reactor and the sewage treating method thereof, relating to a sewage treating reaction device and method. And it comprises first microelectrolytic/biological reaction tank, flocculation tank, first settling tank, second microelectrolytic/biological reaction tank, third microelectrolytic/biological reaction tank and second settling tank, where the first microelectrolytic/biological reaction tank holds microbe inoculating iron chips filling layer and activated carbon filling layer. And the invention has advantages of high organic pollutant treating efficiency, sewage denitrification, no electrode passivation, simple process flow, less occupied area, etc.

The invention is concerned with a method to remove sulfur dioxide of gas and smoke through bio-trickling filter tower with bamboo-carbon filler. The nutrient source spray on the filling inside the tower form the top of bio-trickling filter tower and run into the filling from up to down and enter the circulation gutter on the bottom of tower, then go back to the top of tower by circulation gutter. Meanwhile the gas and smoke with sulfur dioxide enter form the bottom of tower, during the rising process, it is cleaned by the bio-film with fixed desulfuration bacteria and discharged form the top of tower. The filling is the pretreatment bamboo-carbon and it is fit for getting Ferrous Sulfate desulfuration byproduct. The bamboo-carbon owns developed holes and strong adsorption ability to form steady and high active bio-film and to remove the sulfur dioxide. It has wide application future to callback sulfur with low cost.

A modular, on-site, wastewater treatment system removes total nitrogen, phosphorus, BOD, and TSS. A flow equalization module provides a constant flow rate to the system eliminating the adverse effects from variations in flow rate throughout the day. Treatment modules are similarly sized to provide a compact, modular system. The nitrification module is a fixed-film, flooded packed bioreactor to facilitate bioconversion of ammonia to nitrate. Aeration of the module provides the oxygen needed for the bioconversion as well prevents clogging of the film. Solids from the nitrification process are removed in a first cone-shaped settling tank. De-nitrification where nitrate is converted to nitrogen gas takes place in an anaerobic fixed-film bioreactor. Carbon-based bio-film carriers provide a carbon source for de-nitrification. A final cone-shaped settling tank separates solids from the treated wastewater. Additional modules to address removal of phosphorous or other contaminants can be added to the modular system.

The present invention relates to a biological filter, its preparation method, equipment formed from it and its application. Said invention comprises peripheral structure frame, carrier which is formed from biomembrane leaf frame and is placed in the above-mentioned peripheral structure frame and high-molecular material cross-linked polymer biomembrane on which the effective mycetocyte is inlaid, and every biomembrane leaf frame and bottom plane of the peripheral structure frame are formed into 10 deg-90 deg. angle. Said invention can be used for treating industrial waste gas containing malodor and organic pollutant components so as to attain the goal of purifying gas.

The invention discloses a method for preparing a modified composite biological filler and belongs to the technical field of environmental protection. According to the method, polyvinyl chloride polyhedral hollow spheres serve as a carrier, are subjected to compound-acid oxidation and then are subjected to acrylic acid grafting modification; through introducing oxo polar groups, the surface roughness and microbial film hanging performance are improved, the specific surface area and microbial attachment area are increased; due to adsorption removal capability of zeolite, vermiculite and activated charcoal to wastewater, luffa cylindrica is subjected to carbonizing treatment and then is compounded with the zeolite and the vermiculite, and FeAl precipitates are adsorbed; FeAl oxide doped composite powder is prepared through high-temperature calcination, so as to further improve the adsorption removal capability; meanwhile, due to biological film growth promoting action of Fe, the film hanging time is shortened; and finally, the composite powder is stuck to surfaces of the modified polyvinyl chloride polyhedral hollow spheres treated with polyvinyl alcohol, so as to prepare the modified composite biological filler. The prepared modified composite biological filler has the advantages that the stability is good, the specific surface area is large, the surface is rough, and biological films are difficult in falling-off.

The invention provides an artificial simulated aquatic weed manufacturing method. The invention adopts the method that natural aquatic weed is used as a template, a platy soft foam plastic floating type framework in a middle layer is used as a solid bracket, mixed fiber layers are bonded on the both sides of the surface, and therefore an artificial simulated aquatic weed main body is manufactured by adopting the three-layer composite structure; a plurality of floating balls are arranged at the upper end of the artificial simulated aquatic weed main body equidistantly, a balance sand bag is arranged at the lower end, and therefore the artificial simulated aquatic weed is manufactured. The mixed fiber of hydrophilic fiber and hydrophobic fiber is used as a biological film carrier, the surface characteristic and the physicochemical index parameter of the manufactured artificial simulated aquatic weed are good, the specific surface area is large, the hanging of the biological film is perfect, and the operating performance is steady; the structural design is reasonable, the installation is simple, the production cost is low, and the application is diversiform.

The invention discloses a preparation method of a collagen matrix composite biological film for guided tissue regeneration. The method comprises the following steps of dissolving collagen in an acid solution, adjusting pH (potential of hydrogen) of an obtained solution to be alkaline, continuing to add an inorganic powder material, uniformly stirring, adjusting pH of an obtained solution to be neutral, centrifuging, removing a supernate, collecting a collagen composite film, allowing the obtained collagen composite film to be subjected to mold forming, freeze-drying, using a physical or/and chemical method for crosslinking, and obtaining the collagen matrix composite biological film.

A method for cleaning contaminated surfaces of surgical waste management equipment. The method includes rinsing surfaces of the equipment with water to remove water soluble contaminants and waste material. A rinse solution is applied to the surfaces of the equipment to provide a residual film thereon. The rinse solution includes a first nonionic nonylphenol surfactant having an HLB value ranging from about 10 to about 15, a second nonionic nonylphenol surfactant having an HLB value ranging from about 16 to 20, a bio-film permeation agent, and an aqueous solvent. A total of the first surfactant and the second surfactant in the solution ranges from about 2 to about 20 percent by weight of a total weight of the solution and a ratio of the second surfactant to the first surfactant in the solution ranges from about 2:1 to about 4:1.

The invention relates to a manufacturing method of biological stuffing for processing degradation-resistant wastewater; the method comprises the following steps of: mixing gamma-calcium glutamate polymer with polypropylene with the dose of 0.3% to 0.5% and then spinning, after non-woven fabric through a spinning-binding method is obtained, hot rolling at 150 DEG C to 160 DEG C or sizing by acupuncture or spunlace technology, so as to obtain the biological stuffing for processing degradation-resistant wastewater; or mixing gamma-calcium glutamate polymer with polypropylene with the dose of 0.3% to 0.5%, then extruding to be melt trickle by using a melt-blow die head assembly, stretching and cooling, forming net and binding automatically by using a cylinder type or plain net type receiving device, so as to obtain melt-blow method non-woven fabric, namely the biological stuffing for processing degradation-resistant wastewater is obtained. The biological stuffing prepared by the manufacturing method for processing degradation-resistant wastewater has the following characteristics of biodegradability, excellent biocompatibility, high water-retaining property, no toxicity and harm to human body, high microorganism bio-film culturing amount, high impact resistance, high purifying efficiency, and the like; can be widely used for processing degradation-resistant wastewater; and compared with the biological stuffing made of plastic injection molded parts or chemical fiber yarns, the purifying efficiency is improved by 30%.

The invention discloses a method for domestic sewage treatment. The method comprises the following steps: enabling the sewage to flow through a grating to remove thick and big solid sundries in the sewage; then feeding the sewage into a settling tank to carry out sedimentation treatment; carrying out aerobic treatment process, carrying out processing by a bio-film carrier layer, finally carrying out flocculation treatment, and carrying out other steps. The processing method is simple in process, good in effect, high in color removal rate, low in COD (Chemical Oxygen Demand) and BOD (Biochemical Oxygen Demand), high in phosphorus removal rate, small in solid residual volume, low in cost and suitable for popularization.

The invention discloses a method for preparing a biomass microbial carrier. The method comprises the following steps: smashing a biomass to obtain particles of 50 to 200 mesh; adding a polyethylene raw material according to the proportion of 10 to 90 percent; mixing the raw materials to be uniform; weighing 2 to 20 g of the mixture for a single piece; putting the weighed mixture into a mold; pressing for 1 to 15 minutes under 5 to 40 MPa; demoulding; carrying out thermal shaping for 10 to 80 minutes at 140 to 160 DEG C; taking out the shaped product; cooling to obtain a biomass microbial carrier sample. The method is simple in process and low in product cost, and is a new method for preparing a high-load durable biological film carrier simply and easily; the product can be used in the microbe treatment technology of various special waste water, and has a wide market prospect.

The invention discloses a novel photocatalysis filter tank device and a water treatment system. The filter tank device consists of a device outer wall, an ultraviolet lamp tube, a tower tray support column, a filter material and a filter material tower tray, wherein a transparent glass bead carrier is taken as the filter material, and waste water is treated by a nanometer TiO2 film with the capability of effectively degrading organic pollutants through photo-catalytic oxidation under the irradiation of ultraviolet light.. The water treatment system mainly comprises a filter bed, an illumination system, a water distribution system and a backflow system. The novel photocatalysis filter tank device organically combines the conventional biomembrane filtering tank with the advanced photocatalysis treatment process, is ingenious in design and compact in layout, allows a light source to be uniformly distributed in the filter material, has a good hydraulic power condition, can fully utilize light energy, does not need aeration, does not generate sludge and secondary pollution, is convenient to operate and simple to maintain, is high in water-quality purification efficiency and sterilization capability, and is mainly applied to the fields of reclaimed water reuse, deep sludge (waste) water treatment and the like.