60results about How to "Improve pollution" patented technology

This invention provides a photocatalytic composite nanoenzyme self-cleaning coating, its preparation method, and its application. Specifically, it includes: preparing solution A with Ca(NO3)2·4H2O and nano-cerium oxide; preparing solution B with (NH4)2HPO4 and hexadecyltrimethylammonium bromide; mixing solutions A and B, and reacting at high temperature to obtain cerium oxide nanoenzyme / hydroxyapatite microspheres; and using (NH4)6Mo7O... 24 Solution M is prepared by dissolving Fe(NO3)3·9H2O in deionized water; solution N is prepared by dissolving Fe(NO3)3·9H2O in deionized water; solutions M and N are mixed to obtain a precursor; the precursor is reacted with cobalt oxide at high temperature to obtain Co / Fe2(MoO4)3; tetraethyl orthosilicate, anhydrous ethanol, deionized water, and ammonia are mixed and sealed for aging; after adding a modifier, it is mixed with cerium oxide nanoenzyme / hydroxyapatite microspheres and Co / Fe2(MoO4)3, sprayed onto the obtained composite coating, and cured at high temperature to obtain a self-cleaning coating. This invention, by loading a photocatalyst and nanoenzyme / hydroxyapatite microspheres onto the surface of a modified SiO2 gel, effectively improves the photocatalytic activity and self-cleaning performance of the coating while maintaining good optical transmittance.

The invention relates to the technical field of membrane separation, in particular to a composite ultrafiltration membrane based on blending modification and surface modification and a preparation method and application thereof. The method comprises the following steps: firstly, preparing a polydopamine functionalized multi-walled carbon nanotube through oxidation cross-linking auto-polymerization and adhesion of a dopamine compound in an aqueous solution; dissolving a film-forming polymer, a pore-foaming agent and the prepared polydopamine functionalized multi-walled carbon nanotube in an organic solvent, degassing, and preparing a blend film by adopting a non-solvent induced phase separation method; the prepared blended membrane is sequentially and alternately immersed in a tannic acid solution and an aluminum salt solution, a tannic acid-aluminum ion metal phenolic aldehyde network layer is formed on the surface of the blended membrane through a coordination-driven layer-by-layer self-assembly method, and the composite ultrafiltration membrane is obtained. The composite ultrafiltration membrane prepared by the invention has high flux, high selectivity and excellent anti-pollution performance, and is especially suitable for treating and recycling wastewater containing organic macromolecules such as protein, colloid and the like.

The application discloses a hot water boiler based on a porous medium burner, which comprises a hot water boiler shell, wherein the hot water boiler shell comprises a boiler barrel, the outer side of the boiler barrel is provided with a water jacket for storing water, and the inside of the boiler barrel is fixedly provided with a porous medium burner; the inner cavity of the porous medium burner comprises a combustion reaction zone, the two ends of the combustion reaction zone are provided with anti-backfire areas, the two ends of the porous medium burner are provided with mixed gas inlets, the mixed gas inlets are connected with mixed gas input pipelines, one end of the mixed gas input pipelines extends out of the hot water boiler shell and is connected with a gas fuel supply device; the porous medium burner is internally provided with an ignition device, mixed gas flows into the combustion reaction zone from the mixed gas input pipelines and is ignited by the ignition device, heat generated by combustion of the mixed gas heats water in the water jacket, flue gas is discharged from the combustion reaction zone through the pores of the porous medium of the porous medium burner and is discharged into a flue gas treatment mechanism connected with the hot water boiler shell, the gas utilization rate is improved, and the heat diffusion speed is slowed down.

The invention relates to the technical field of water pollution control and treatment, in particular to an industrial wastewater precipitation separation control system which comprises a shell, a treatment module and a sludge hopper. The sludge hopper is mounted at the lower end of the shell. The treatment module comprises a water passing block, a bottom plate and an inclined plate assembly. The water passing block is installed in the shell. The inclined plate assembly comprises a plurality of inclined plates which are evenly distributed in the circumferential direction of the water passing block, and a spiral channel is defined between the inclined plates and the water passing block. The bottom plate can be mounted between the water passing block and the sludge hopper in an up-down moving manner. According to the industrial wastewater precipitation separation control system disclosed by the invention, when wastewater needs to be treated, suspended pollutants in the wastewater are in full contact with the inclined plate by arranging the spiral, so that the wastewater treatment effect is remarkably improved. When the inclined plate needs to be cleaned, sludge on the inclined plate is cleaned in a vibration mode, surface abrasion of the inclined plate is relieved, the inclined plate can operate more stably, and then the water pollution control and treatment effect is improved.

The invention discloses a green liquid salt and a production process thereof, and relates to the technical field of liquid salts.The production process comprises the steps that a metal organic framework is taken and added into a Tris-HCl buffer solution, uniform mixing is conducted, dopamine hydrochloride is added, stirring, centrifuging, washing and drying are conducted, and the metal organic framework of a core-shell structure is obtained; the preparation method comprises the following steps: adding sulfonated polysulfone, a core-shell structure metal organic framework and polyvinylpyrrolidone into N-methyl pyrrolidone, stirring until the materials are completely dissolved, and carrying out ultrasonic treatment to obtain a membrane casting solution; taking the membrane casting solution, pouring on a glass plate, and performing blade coating, water bath, phase inversion and soaking to obtain a nanofiltration membrane; taking brine, adding modified charcoal, adsorbing, and performing ultrafiltration through an ultrafiltration membrane to obtain ultrafiltration filtrate; and carrying out nanofiltration on the ultrafiltration filtrate through a nanofiltration membrane to obtain liquid salt. Sulfonic acid groups introduced into the nanofiltration membrane are negatively charged, and the interception rate of the nanofiltration membrane on sulfate ions, calcium ions and magnesium ions is improved through electrostatic interaction and size screening.

This invention belongs to the fields of water environment monitoring, watershed pollution simulation, and smart water management. Specifically, it provides an integrated air-space-ground small watershed water pollution monitoring system, comprising: an airborne monitoring module for collecting spatial distribution data of water quality across the entire small watershed; a ground-based monitoring module for collecting continuous temporal water quality and hydrological baseline data of the small watershed; a multi-source data management module for data processing; a model engine module for constructing and running a distributed hydrological and water quality mechanism model of the small watershed; an adaptive parameter optimization module for automatically calibrating and dynamically updating the parameters of the distributed hydrological and water quality mechanism model of the small watershed; an early warning and source tracing module for obtaining early warning and source tracing results; a long-term prediction module for obtaining water quality prediction results; and a visualization decision module for displaying early warning and source tracing results as well as water quality prediction results. This invention realizes the monitoring, early warning, source tracing, and long-term prediction of water pollution in small watersheds.

The invention belongs to the technical field of optical thin film detection, and particularly discloses an optimization method of an optical thin film detection system, which is used for solving the problems of weak interference resistance, poor pollution resistance and insufficient complex scene adaptation of the traditional detection system. The method comprises the following steps: pre-selecting a light needle beam with a needle-point-shaped cross section as a light source, defining a source plane light field, and constructing a limited energy generation condition through apodization operation; setting a plurality of groups of regulation and control parameters for three transmission states of diffraction, non-diffraction and focusing; building an experiment system to generate a directional light needle light beam, simulating pollution and interference scenes, and collecting light field data of different transmission nodes before and after interference; and quantizing the light field similarity through a witness function, screening an optimal regulation and control parameter, and integrating the optimal regulation and control parameter to a detection system. According to the invention, the anti-interference and information stability are improved from the light source essence, the method is adaptive to ultrathin, multi-layer thin film and complex environment detection, the detection precision and long-term stability are obviously improved, and both practicability and economy are taken into account.

This utility model relates to the field of water treatment technology, and in particular to an integrated water treatment system suitable for extremely cold regions with temperatures as low as -60°C. The system includes a raw water collection tank, a heat exchanger, a static mixer, a self-cleaning filter, an ozone oxidation treatment unit, an air flotation unit, a thickening tank unit, a tubular microfiltration membrane device, a clear water tank module, and a pipeline network. The system is integrated within multiple standardized containers, with the water treatment equipment and components housed within the containers. The air flotation device and ozone catalytic tower are located in the external space. Through the integration of flocculation, self-cleaning filtration, ozone oxidation, air flotation, and tubular microfiltration processes, and employing a modular container design, the system is equipped with electric heating and composite insulation structures to achieve efficient decontamination and freeze protection. Simultaneously, the use of air flotation + flocculation + tubular microfiltration processes efficiently removes suspended solids, operates automatically, and is adapted to extremely cold environments. The pipelines and equipment utilize composite insulation technology to ensure stable operation at low temperatures.

The utility model provides a maximum tongue pressure measuring instrument which comprises a measuring main machine, a connector, a connecting line, a grip and a balloon which are connected in sequence, an air port in the bottom of the balloon is communicated with an air channel in the grip, a high-precision pressure sensor is installed in the air channel, tiny tongue pressure changes can be accurately and stably captured, and the maximum tongue pressure measuring instrument can be used for measuring the maximum tongue pressure. A control card, a data processing module and a wireless communication module are arranged in the measurement host, the wireless communication module is in wireless communication connection with the terminal server, and the terminal server is connected with the display and the cloud data center. According to the maximum tongue pressure measuring instrument, the maximum value of three times of tongue pressure measurement is taken as the maximum tongue pressure of a patient, the maximum tongue pressure data are sent to the terminal server in real time, and the measured data are synchronously stored in the cloud data center, so that the data can be effectively prevented from being lost; the medical staff is helped to know the training or treatment progress of the patient, and meanwhile the medical staff can conveniently call historical measurement data.

The utility model relates to the technical field of chemical environmental protection equipment, and disclose a kind of environmental protection chemical waste filtering device, including device body, first filter component and second filter component.The top of device body is equipped with feed pipe, and side is equipped with discharge pipe.First filter component is installed using plug-in mode, its inside is equipped with coarse filter screen and a set of by motor-driven screw rod scraper mechanism, can automatically scrape off filter residue, prevent blockage.After the waste material after rough filtration is further homogenized by the stirring and crushing mechanism below, it enters second filter component.Second filter component is also plug-in type, its inside is equipped with fine filter screen and vibrator, and waste material collection cavity is formed at bottom, and vibration can prevent fine filter screen blockage, ensure continuous efficient filtration.The device realizes the efficient continuous filtration of chemical waste through the multistage synergistic effect of rough filtration, residue scraping, stirring, fine filtration and vibration blockage prevention, and the modular plug-in design makes cleaning and maintenance very convenient, improves the environmental protection and practicality of the equipment.

The application relates to the technical field of membranes, in particular to an antibacterial nanofiltration membrane and a preparation method thereof. The method comprises the following steps: polyethylene imine / tannic acid pretreatment is carried out on a polyethersulfone sulfone ultrafiltration membrane substrate; first interfacial polymerization of a water phase containing piperazine, guanidino butylamine sulfate and taurine and an organic phase containing trimesoyl chloride is sequentially carried out; secondary water phase back immersion is carried out by using a taurine solution; a cross-linking anchoring agent with 20%-22% maleimide double bonds is prepared; the cross-linking anchoring agent is used for anchoring-densification treatment together with trimesoyl chloride; and finally, acid / alkali alternation and heat curing are carried out. Through unique step design and function component synergy, a stable antibacterial and anti-pollution structure is constructed in the separation layer, and the problems of easy biological pollution and easy loss of antibacterial agents of traditional nanofiltration membranes are solved. The obtained membrane has long-acting antibacterial property, high flux recovery rate, high ion selectivity and excellent acid / alkali cycle stability.

The application discloses a method for modifying a hyaluronic acid grafted polyamide membrane against pollution by a thermal method and application thereof, and relates to a method for modifying a polyamide membrane against pollution and application thereof. In order to solve the problem of poor anti-pollution performance of the existing polyamide membrane, the application uses hyaluronic acid for surface grafting modification of the polyamide membrane. Due to the super-hydrophilic property of the hyaluronic acid, a hydration layer is formed on the surface of the modified polyamide membrane, effectively hinders the adhesion of pollutants, and meanwhile, part of the short chains of the hyaluronic acid can promote the desorption of the membrane surface pollutants while being hydrolyzed, so that the flux recovery rate of the membrane is improved, and the operation cost is reduced. Compared with the traditional polyamide membrane or other modification methods, the anti-pollution performance of the hyaluronic acid modified polyamide membrane is significantly improved, and the anti-pollution efficiency is excellent in the treatment of shale oil fracturing flowback wastewater. The application belongs to the technical field of water treatment membrane preparation.

This invention discloses a device and method for the co-processing of tailings and waste rock, backfilling and compaction, and in-situ quality testing, belonging to the field of resource utilization of mining solid waste. Tailings, waste rock, and large particulate waste are weighed and then enter a screening, dewatering, and water treatment and recycling system III. After dewatering, the tailings enter a tailings and solidifying agent mixing system IV, where it is mixed with one or more solidifying agents and / or reinforcing materials transported by a solidifying agent storage system V to form a slurry. The slurry enters a slurry backfilling bin through a silo conveying port and a slurry input channel. After being stirred again in the backfilling bin, it is guided and shaped by a plastic sheet and compacted by a walking compaction wheel. The screened waste rock enters a five-stage waste rock grading screening bin. The in-situ quality testing system samples and tests the strength of the backfilled and compacted area. This invention achieves integrated continuous operation of tailings and waste rock weighing and batching, screening and dewatering, solidification and mixing, slurry backfilling and shaping, waste rock damming, tailwater reuse for dust suppression, and backfill quality testing.

This invention belongs to the field of industrial filter cloth technology, and discloses an anti-clogging polyester monofilament filter cloth and its preparation method. By passing untwisted polyester multifilament bundles through a first coating liquid, each monofilament has a double hydrophobic interface; the multifilaments are twisted to form the weft, and the polyester monofilaments form the warp in a woven filter cloth; after calendering, the filter cloth is coated with a second coating liquid to form a hydrophilic coating. The resulting anti-clogging polyester monofilament filter cloth solves the technical bottlenecks of easy clogging and low filtration efficiency in polyester monofilament filter cloths. When filtering slurry, the liquid easily forms a hydration layer on the hydrophilic layer of the filter surface, preventing intercepted particles from directly adhering to the filter surface, thereby improving the filter cloth's anti-pollution and anti-clogging capabilities. The double hydrophobic interface in the fiber gaps within the multifilament allows infiltrated oil, water, ultrafine particles, colloids, etc., to quickly detach, making them less likely to adhere and accumulate inside the fibers, maintaining smooth filtration and effectively reducing the resistance of the filter press operation. This filter cloth is easy to unload, has a significant anti-clogging effect, a long service life, and high filtration efficiency.

A method for recycling of bead sand production waste, comprising the following steps: S1, collecting waste; collecting waste generated during preparation of bead sand; S2, mixing; mixing water glass into the waste, so that the waste and the water glass are fully mixed; S3, pre-solidification treatment; filling the waste mixed with the water glass into a sprue cup mold, and introducing carbon dioxide gas into the loose waste in the mold; S4, compaction; S5, solidification; taking the compacted material out of the mold as a whole, standing, naturally solidifying, and then placing it in a drying oven for isolated flame drying at a temperature of 160-200 DEG C; S6, coating; S7, coating drying; the application turns waste into treasure, changes the waste into a sprue cup for casting, and changes into economic income; can avoid the lint of fibrous materials such as aluminum silicate fiber or high-aluminum fiber flying everywhere, polluting the environment, can greatly improve the possible environmental pollution, and protect the health of the bead sand related production personnel.

This invention belongs to the field of biosensor technology, specifically relating to an electrochemical nanosensor for NO detection in macrophages, its preparation method, and its application. The electrochemical nanosensor includes a working electrode and a layer of gold nanoparticles, a layer of platinum nanoparticles, and a 5-amino-1-naphthol polymer layer sequentially modified on its surface. The 5-amino-1-naphthol polymer layer has a porous structure and can selectively permeate NO molecules while blocking interfering substances. This invention constructs an electrochemical nanosensing platform for in-situ NO detection in single cells, used for evaluating macrophage polarization phenotypes. Simultaneously, this platform was applied to a co-culture system of macrophages and cancer cells under different stress states to explore the regulatory effects of cellular immunogenic death and ferroptosis on macrophage polarization, providing single-cell level technical support and experimental evidence for the study of the tumor immune microenvironment.

This utility model discloses a vacuum interrupter, including a shell. An end cap is fixedly connected to the top of the shell, and a moving contact assembly is movably connected to the surface of the end cap. A stationary contact assembly is installed at the bottom of the shell, opposite to the moving contact assembly, and the stationary contact assembly is in movable contact with the moving contact assembly. A shielding cylinder is installed on the inner wall of the shell at the position opposite to the movable contact connection of the stationary contact assembly and the moving contact assembly. The shielding cylinder includes a first connecting cylinder, a second connecting cylinder, and a shielding block. The shielding block is fixedly connected between the first connecting cylinder and the second connecting cylinder. Creepage grooves are uniformly formed on the inner wall surface of the shielding block. This utility model, through an innovative composite shielding cylinder structure with creepage grooves, effectively solves the problem of poor shielding effect under high current leading to insulation degradation of the inner wall of the shell in the prior art. It effectively improves the electrical insulation strength, anti-pollution ability, and breaking reliability of the vacuum interrupter, and has the advantages of practical structure and significant effect.

The utility model discloses a novel high-pollution-resistance reverse osmosis membrane which comprises a central tube, pure water inlet holes are formed in the outer wall of the central tube at equal intervals, and polyamide composite filter membranes are arranged outside the central tube at equal intervals. A water inlet titanium alloy flow guide grid and a permeable water flow guide grid are arranged on the sides, close to each other, of the polyamide composite filter membranes respectively, the water inlet titanium alloy flow guide grid and the permeable water flow guide grid are arranged at intervals, and a super-hydrophobic coating is arranged on the outer wall of the water inlet titanium alloy flow guide grid. And nano-silver ions are arranged in the permeated water flow guide grid at equal intervals. The utility model relates to the technical field of water treatment, and solves the problems that in the prior art, a reverse osmosis membrane is easily eroded by pollutants, microorganisms and chemical substances in water in a long-time use process, so that the performance of the membrane is reduced, the flux is reduced, and the filtered water flux and the service life of the reverse osmosis membrane are influenced.

The utility model discloses a novel detachable efficient heat and mass transfer air sweeping type membrane distillation component which comprises a shell and a conveying pipeline, a membrane component is arranged on the inner side of the shell, a PTFE membrane and a silica gel gasket are arranged on the membrane component respectively, a plurality of sets of screws are arranged at one end of the membrane component, and air sweeping cavities are formed in the two sides of the top of the membrane component; according to the utility model, air sweeping type membrane distillation is adopted, so that the membrane flux and the distillation efficiency are effectively improved while the mass transfer resistance in the treatment process is reduced; in the distillation process, the hot test feed liquid does not make direct contact with the membrane, the probability and risk of membrane pollution are reduced, the anti-pollution capacity of the membrane is improved, the PTFE membrane is adopted, the product has excellent chemical stability and corrosion resistance, the anti-pollution capacity of the membrane can be effectively improved, the service life of the membrane can be effectively prolonged, and the product has high porosity and high flux and is suitable for industrial production. High-flux filtration or separation is realized, and the production efficiency is improved.

The utility model relates to the technical field of high-tech services, and discloses an adjustable thin-wall plate rolling machine which comprises a plate rolling machine body, a supporting frame is fixedly installed on the top of the plate rolling machine body, a control box is arranged on one side of the plate rolling machine body, and a protective shell is fixedly installed on the outer wall of the supporting frame. And the guide rolled plate cleaning assembly is arranged above the plate rolling machine body and in the supporting frame. By arranging a motor, a driving adjusting threaded rod and a clamping moving block, an upper roller can move up and down according to needs to adapt to thin plate materials of different thicknesses or specifications, a second motor is matched to drive a rotating wheel and a cleaning brush on the rotating wheel, the curled thin plate materials can be comprehensively cleaned, oil stains, dust and other impurities on the surfaces of the thin plate materials can be removed, and meanwhile the working efficiency is improved. And the collecting box and the collecting hole can conveniently collect waste materials generated in the cleaning process, so that environmental pollution is avoided, follow-up treatment and cleaning are facilitated, and the effect of improving the product quality is achieved.

Provided is a decorative sheet having excellent heat resistance, scratch resistance, and stain resistance. A decorative sheet (1) is provided with a raw material layer (2) and a surface protection layer, and the surface protection layer includes: a first gloss adjustment layer (5) that is provided on the raw material layer (2) and contains a cured product of a first ionizing radiation-curable resin, and a second gloss adjustment layer (6) that is provided on the first gloss adjustment layer (5) and contains a cured product of a second ionizing radiation-curable resin; and a second gloss adjustment layer (6) that partially covers the upper surface of the first gloss adjustment layer (5), contains a cured product of a second ionizing radiation-curable resin, and has an uneven structure on the upper surface in which the ratio (RSm / Ra) of the average length (RSm) of a roughness curve element to the arithmetic average roughness (Ra) is in the range of 10-600. The uneven structure includes a plurality of ridge-shaped portions each protruding in a ridge shape.

The application relates to a composite anti-fouling adsorption membrane and an application thereof, and belongs to the technical field of separation composite membranes. The application comprises the following steps: 1) dissolving carboxylated polyvinylidene fluoride, carboxymethyl chitosan and a pore-forming agent polyethylene glycol in a solvent, stirring and mixing, and vacuum degassing to obtain a casting solution; 2) pouring the casting solution on a glass plate to form a thick liquid film, immersing the thick liquid film into a coagulation bath to solidify into a film, and immersing the film into a pure water bath to obtain a wet film; 3) immersing the wet film into an acrylic acid solution containing a photoinitiator, performing a free radical polymerization reaction under the protection of nitrogen and through ultraviolet light irradiation to obtain a hydrophilic acrylic coating, then washing the coating with deionized water, and vacuum drying to obtain the composite anti-fouling adsorption membrane. The membrane has gradient pores, good mechanical properties and hydrophilicity, the preparation process is simple, the adsorption rate is fast, the adsorption capacity is high, the regeneration life is long, and the membrane has strong practicability.

The application discloses a glaze with starlight effect after firing and a production process of ceramic tiles, and mainly relates to the field of glazes, which comprises a base glaze and starlight particles which can present a starlight effect under light source irradiation after firing, wherein the starlight particles are obtained by melting, water quenching, crushing and screening raw materials, and the glaze is obtained by adding more than 2.5% of the starlight particles in the base glaze and mixing them uniformly. The glaze has a point-like starlight effect without polishing the glaze surface after firing. Through the cooperation of the starlight particles with specific chemical composition, particle size distribution and mass ratio, the application further improves the flatness effect and pollution resistance of the glaze surface, and overcomes the technical problems of pits and poor pollution resistance of the glaze surface in the prior art. Moreover, the preparation method of the further scheme is limited to a specific firing system, and the ceramic tiles obtained by the method have a water absorption rate of 0.5-3%, and are especially suitable for being laid on a wall surface, and can better reflect the unique point-like starlight effect of the stars with the light side irradiation.

This invention relates to the field of wind tunnel technology, and in particular to a self-redundant multi-actuator system for a semi-flexible wall nozzle section in a wind tunnel. The system includes multiple sets of self-redundant actuators arranged laterally side-by-side on a single-sided profile wall of the semi-flexible wall nozzle section in a transonic wind tunnel. A hydraulic control unit is connected to the self-redundant actuators to adjust their maximum output power and achieve hydraulic self-locking. It can also selectively activate or deactivate the redundancy capability of the actuators according to operational requirements. A constant-pressure oil source unit is connected to the hydraulic control unit to supply oil to the self-redundant actuators and provide power compensation. This invention features high energy efficiency, strong anti-pollution capability, high power density, heterogeneous self-redundancy capability, and high reliability. It also combines the precision positioning characteristics of electromechanical actuators with the load adaptability of a hydraulic system, enabling direct and precise shaping of large-size semi-flexible wall nozzle profiles.

The application provides a multifunctional nanofiltration membrane and a preparation method and application thereof, and the preparation method comprises the following steps: first, preparing a hydrophilic polydopamine oxidation layer on a polyamide nanofiltration membrane; then, grafting a PHFBM self-cleaning layer with low surface energy on the polydopamine layer; then, grafting a PMTAC layer with sterilization performance on the PHFBM layer; finally, grafting a zwitterionic polymer PSBMA layer with a defense function on the PMTAC layer, so as to obtain a multifunctional nanofiltration membrane with the functions of defense, resistance and self-cleaning. The multifunctional nanofiltration membrane prepared by the application can effectively improve the pollution phenomenon of microorganisms by the defense of the hydrophilic material and the sterilization effect of the quaternary ammonium salt while maintaining the advantage of high water flux, and the low surface energy material can make dead cells and extracellular polymers automatically fall off from the membrane surface under low shear force, so that the effect of self-cleaning is realized.

The application refers to Fe-Ni / polysulfone inorganic-organic hollow fiber hybrid membrane and a preparation method thereof, including a preparation process: step 1: dissolving polysulfone in an organic solvent and adding an additive, stirring to form a uniform solution; then adding 0.5% to 30% of Fe and Ni metal powder by mass ratio under stirring to obtain a spinning solution; step 2: mixing pure water and a polar solvent according to a certain ratio to form a uniform solution, obtaining an inner coagulation bath; step 3: transferring the spinning solution to a liquid supply tank after vacuum degassing, quantitatively and constantly conveying to a spinneret, at the same time, quantitatively and constantly conveying the inner coagulation bath into the spinneret, the spinning solution passing through an air gap and entering an outer coagulation bath, the hollow fiber membrane being coagulated and formed under the action of the inner / outer coagulation bath, being washed by pure water and dried to obtain the Fe-Ni / polysulfone hollow fiber membrane, which has a typical asymmetric structure, high mechanical strength and good biocompatibility, can significantly improve the hydrophilicity of the membrane and can also enhance the protein contamination resistance of the membrane.

[Problem] To provide a polymerizable silicone monomer capable of providing a polymer having excellent transparency, surface hydrophilicity, durability, and stain resistance, a method for producing the same, a curable composition containing the monomer, a polymer obtained by polymerizing the composition, and an ophthalmic instrument formed using the polymer. [Solution] A polymerizable silicone monomer represented by formula (1) (in the formula, R1 independently represents a monovalent hydrocarbon group having 1-4 carbon atoms, R2 independently represents an alkyl group having 1-10 carbon atoms or an aryl group having 6-10 carbon atoms, R3 represents a hydrogen atom or a methyl group, A1 represents a single bond or a divalent hydrocarbon group having 1-20 carbon atoms, R2 represents an alkyl group having 1-10 carbon atoms or an aryl group having 6-10 carbon atoms, and R3 represents a hydrogen atom or a methyl group; q is a divalent group selected from the group consisting of-A2-O-A3-and-O-A4-O-, A2 and A3 are each independently a single bond or a divalent hydrocarbon group having 1-3 carbon atoms and optionally having a branched chain, at least one of hydrogen atoms bonded to the carbon atoms of the divalent hydrocarbon group may be substituted by an alkoxy group having 1-4 carbon atoms, A2 and A3 are not a single bond at the same time, and A3 and A3 are each independently a single bond or a divalent hydrocarbon group having 1-3 carbon atoms and optionally substituted by an alkoxy group having 1-4 carbon atoms. A4 is a divalent hydrocarbon group having 1-3 carbon atoms and optionally having a branched chain, at least one of hydrogen atoms bonded to the carbon atoms of the divalent hydrocarbon group may be substituted by an alkoxy group having 1-4 carbon atoms, and n is an integer of 1-3.

The present application relates to wastewater treatment technical field discloses a kind of black and odorous shale gas flow-back fluid processing method and system, the processing method is into aeration tank into black and odorous flow-back fluid, bubble is formed by air aeration and residual ozone, oxidize and form deposit to reducing material, while residual ozone sterilization and degradation organic matter to flow-back fluid;The flow-back fluid after air aeration pre-oxidation system processing is into softening coupling enhanced coagulation system, and the treatment agent is added in multistage reaction tank, and the flow-back fluid is softened, coagulated and precipitated, and scale ions are removed;The supernatant after multistage reaction tank processing enters advanced oxidation system and is carried out depth oxidation treatment;Again into membrane system and carries out safe filtration.The processing method of the present application can effectively solve black and odorous problem, reduce the content of total hardness, total iron, suspended solids and bacteria in black and odorous water, and the like, and the dross and odorous gas can be effectively removed, and the water after treatment can reach the reuse water quality standard, and can be used as fracturing fluid preparation water.

The application relates to a preparation method of high-pre-stretch polyethylene wrapping film with elastic memory, and belongs to the technical field of polymer material processing. The application aims to overcome the problems of the existing wrapping film, such as the decline of mechanical properties, the serious stress relaxation and the easy migration and pollution of liquid tackifier under the conditions of film thinning and high-pre-stretching. The technical scheme of the application is characterized in that a functional asymmetric five-layer co-extrusion structure is adopted, the structure is sequentially arranged from inside to outside as an adhesion layer, a first transition reinforcing layer, a core elastic layer, a second transition reinforcing layer and a smooth peeling layer, the core elastic layer is composed of a molecular network of octene metallocene linear low-density polyethylene and propylene-based polyolefin elastomer, the adhesion layer provides dry physical self-adhesion force by using propylene-based polyolefin elastomer, the surface rheological behavior is adjusted by using fluoropolymer processing aids in each layer, and a stepwise temperature rising extrusion and air knife pinning quenching process is adopted for forming.

This invention provides a method for preparing and applying an antibacterial and antifouling MWCNT-GeC1a / PVDF composite membrane, relating to the field of separation membrane manufacturing technology for water treatment. Using pretreated carbon nanotubes (MWCNTs) as a carrier, this invention grafts gentamicin C1a (GeC1a) via an amidation reaction to obtain an MWCNT-GeC1a nanocomposite material. A solvent-inducible phase inversion method is then used to introduce MWCNT-GeC1a into the PVDF casting solution to prepare a mixed matrix composite membrane. The presence of MWCNTs enhances the membrane's hydrophilicity, while the addition of GeC1a imparts antibacterial properties, thus achieving synergistic inhibition of both organic and biological contamination. The MWCNT-GeC1a / PVDF composite membrane obtained by this invention exhibits significantly improved antibacterial and antifouling properties, effectively enhancing the membrane's filtration efficiency and extending its service life, demonstrating promising development prospects.