13 results about "Foam separation" patented technology

A method, system, and apparatus for PFAS destruction, comprising: oxidatively pre-treating an aqueous foam separation solution containing PFAS by mixing the aqueous foam separation solution with a persulfate and an acid or base to raise or lower the pH, and then oxidizing the aqueous foam separation solution to form a pre-treatment solution; and then subjecting the pre-treatment solution to UV photodegradation, for example, by inducing UV light of 222 nm, 254 nm, and / or 185 nm into the pre-treated aqueous foam separation solution. The oxidation of the aqueous foam separation solution may include exposing the aqueous foam separation solution to elevated temperature and elevated pressure for a period of time sufficient for thermal oxidation, or subjecting the aqueous foam separation solution to ozono-oxidation.

The application discloses a kind of sustainable system processes for removing perfluoro or polyfluoroalkyl substance, belongs to water treatment field.The process is concentrated to foam phase by foam separation in water phase PFAS, combined with nanofiltration membrane system concentration PFAS containing solution, then carries out defluorination degradation by using hydrated electron in electrocatalytic unit;Nanofiltration water is treated by ion exchange resin, saturated resin is backwashed by mixed solution, and backwash waste liquid is regenerated and recycled by another electrocatalytic unit;Finally, harmless calcium fluoride is generated by flocculation and precipitation, and fluoride ion is removed.The process is suitable for various PFAS, can efficiently remove long-chain and short-chain PFAS, total removal rate is high, can cope with complex water quality, is suitable for drinking water, natural water body and industrial wastewater etc.Situations, and no secondary pollution, regeneration liquid can be recycled, realizes sustainable degradation.

A foam separation treatment method is provided that separates organofluorine compounds from treated water by introducing gas into the treated water containing organofluorine compounds and recovering the foam generated. A polymeric surfactant is introduced into the treated water. Therefore, a foam separation treatment method capable of efficiently separating organofluorine compounds from treated water containing organofluorine compounds is provided.

A liquid ejection device, a cleaning method, and a cleaning program are provided that are capable of sufficiently cleaning a wiper member with a cleaning member even when high-viscosity ink is used. [Solution] The liquid ejection device comprises an ejection head having a nozzle plate with nozzle holes for ejecting liquid, a wiper member for wiping the nozzle surface which is one side of the nozzle plate, a wiper holder for supporting the wiper member, a cleaning member for removing liquid adhering to the wiper member by contacting the wiper member, foam impregnated with cleaning liquid provided on the cleaning member, and a switching mechanism for switching between a contact position where the wiper member contacts the foam and a separation position where the wiper member is separated from the foam.

The present disclosure describes systems and methods for producing graphene. A method for producing graphene may include dispersing a graphite starting material in an aqueous solution to form a graphite solution; performing a collision treatment on the graphite solution to form a graphene foam; and separating the graphene foam to isolate graphene. A system for producing graphene may include an inlet for introducing a solution; a collider including a core for accelerating the solution; an ultrasonic mixer operatively connected to the collider such that the solution is passed from the collider to the ultrasonic mixer; and a foam separator operatively connected to the ultrasonic mixer such that the solution is passed from the ultrasonic mixer to the foam separator.

The utility model relates to the technical field of foam and bottom film separation equipment, disclose a kind of foam separating device, including workbench, the workbench outer wall one side is fixedly connected with support frame one, the support frame one inside upside is provided with placement roller, the workbench outer wall other side is provided with collection roller, the workbench upper is provided with separation assembly, the support frame one upper is provided with deviation rectification subassembly, the placement roller outer wall is provided with limiting component, the deviation rectification subassembly includes deviation rectification wheel, the deviation rectification wheel is arranged in support frame one upper. In the utility model, if foam deviates during conveying, electric push rod pushes the sliding of moving block along slide rail, drives deviation rectification subassembly and makes foam homing, then hydraulic rod drives mould to complete separation, and finished product is collected by collection roller, reaches the real-time perception and quick response of foam deviation direction, can automatically and accurately correct foam conveying path, to improve the precision and consistency of foam separation.

The invention discloses a high-concentration micro-nano foam preparation device and a preparation method thereof.The device comprises a liquid storage tank, a conveying pump, a micro-nano foam preparation unit and a micro-nano foam separation and recovery unit, a first bottom barrier plate is arranged in the liquid storage tank, and the micro-nano foam preparation unit is connected with the conveying pump and arranged on the side edge of the liquid storage tank; and the micro-nano foam separation and recovery unit is integrated at the upper part of the liquid storage tank and comprises a second barrier plate, a micro-nano foam collection tank, a foam overflow plate and a foam discharge liquid return pipe. The micro-nano foam separation and recovery unit is arranged, foaming liquid separated out through the foam overflow plate and the foam discharge liquid return pipe by means of the gravity liquid discharge effect is guided back to the liquid storage tank, gas-liquid separation is effectively achieved, and the dryness and concentration of discharged foam are remarkably improved. The device is compact in structure, low in energy consumption, large in dry density and suitable for industrial large-scale production, and the particle size of the prepared micro-nano foam is concentrated at 1-10 microns.

The invention discloses a method for synchronously removing heavy metal ions and boric acid in wastewater by a foam separation method. The method comprises the following steps: adding a composite surfactant system into the wastewater containing the heavy metal ions and the boric acid, mixing, foaming to form a foam layer, standing, removing foams, and collecting a treated liquid phase. The system comprises a glycosyl surfactant and an anionic surfactant, and the glycosyl surfactant contains glycosyl hydrophilic groups and has more than or equal to 2 hydroxyls, such as sucrose fatty acid ester, rhamnolipid, sophorolipid and the like; wherein the sucrose fatty acid ester is a product obtained by esterifying one or more hydroxyls of sucrose by C8-18 fatty acid acyl. The anionic surfactant is selected from alkyl sulfate and / or alkylbenzene sulfonate, the molar ratio of alkyl sulfate to alkylbenzene sulfonate is 4: 6-7: 3, and the total concentration is 0.1-2 mM. The whole treatment time is 1-10 minutes, the standing time is 1-5 minutes, and the method is suitable for the water body of which the pH value is 3-9 and the total hardness (in terms of CaCO3) is 0-600 mg / L.

This invention belongs to the field of sulfur foam separation technology, specifically relating to a method for the synergistic concentration of sulfur foam through gradient centrifugation and microwave drying. The method utilizes a selected foam modifier to modify the sulfur foam, effectively reducing the number of bubbles and the viscosity of the liquid. It also effectively breaks down the colloidal system formed by bubbles and sulfur particles in the sulfur foam, promoting water separation and further enhancing the dehydration effect. This allows the treated sulfur foam to be dehydrated and dried using only conventional physical dehydration methods, achieving the desired dehydration and drying of high-moisture-content sulfur foam.

The utility model discloses a water blocking device used in a kettle type concentration process of 2-methylimidazole reaction liquid, which comprises a buffer tank body, a baffle plate is arranged in the buffer tank body, a gas phase inlet is arranged on the side of the buffer tank body, a gas-liquid separator device is arranged in the buffer tank body, and a gas phase outlet is arranged on the side of the gas phase inlet. A gas-foam separation device is arranged in the buffer tank body, the gas-foam separation device is fixedly connected with a water guide pipe, a water outlet is formed in the bottom of the buffer tank body, and a gas phase outlet is formed in the top of the buffer tank body. And the separated liquid water can smoothly flow to the tank bottom along the water guide pipe and is regularly discharged, so that the water content in the steam is reduced, and the risk that the vacuum pump is damaged due to the entrainment of the liquid water is avoided.

The present disclosure relates to a wind turbine blade core material recycling system and method, which comprises a detection positioning mechanism, a metal removal mechanism, a cutting and marking mechanism and a core material separation mechanism. The detection positioning mechanism is configured to obtain the position of metal parts in the blade and the distribution parameters of basswood and PVC foam. The metal removal mechanism is configured to remove the metal parts in the blade according to the parameters obtained by the detection positioning mechanism. The cutting and marking mechanism is configured to mark the basswood and PVC foam in the blade after the metal removal mechanism, and cut the blade into basswood blade blocks and PVC foam blade blocks along the marking lines. The core material separation mechanism is configured to strip the basswood in the basswood blade blocks and the PVC foam in the PVC foam blade blocks by a drilling machine. In this way, the basswood and PVC foam in the wind turbine blade can be separated by the recycling system to obtain basswood and PVC foam with high purity.

The present application belongs to the technical field of saponin extraction, and particularly relates to a microwave-assisted foam separation and enrichment device and a separation method thereof. The present application uses the separation and enrichment device to perform microwave-assisted water extraction combined with foam separation and enrichment. The method effectively promotes the leaching of saponin, and the extraction rate is close to that of the traditional ethanol leaching method, while the time is greatly shortened to less than 5 minutes, which is much lower than the time of the traditional hot reflux ethanol leaching and hot water extraction, and no organic solvent is needed. The extraction liquid obtained by microwave-assisted water extraction is directly used as the feed liquid for foam separation. The microwave heating not only accelerates the adsorption of saponin on the gas bubbles, but also reduces the solution viscosity and the interstitial liquid between the gas bubbles, thereby significantly improving the enrichment ratio. At the same time, the amphiphilic property of saponin and the intramolecular vibration under the action of microwave further enhance the adsorption of saponin on the gas bubbles, so that the enrichment ratio is as high as 1.6 or more, which is obviously better than the enrichment ratio of the traditional method combined with the foam separation and enrichment method.

The invention discloses a sustainable system process for removing perfluorinated or polyfluorinated alkyl substances, and belongs to the field of water treatment. According to the process, PFAS in a water phase is enriched to a foam phase through foam separation, a PFAS-containing solution is concentrated by combining a nanofiltration membrane system, and defluorination degradation is carried out by using hydration electrons through an electro-catalysis unit; carrying out advanced treatment on nanofiltration produced water by ion exchange resin, backwashing saturated resin by using a mixed solution, and carrying out regeneration cycle on backwashing waste liquid by another electro-catalysis unit; and finally, harmless calcium fluoride is generated through flocculent precipitation, and fluorine ions are removed. The process is suitable for various PFAS, can efficiently remove long-chain and short-chain PFAS, is high in total removal rate, can deal with complex water quality, is suitable for drinking water, natural water bodies, industrial wastewater and other scenes, is free of secondary pollution, can recycle regenerated liquid, and realizes sustainable degradation.