107results about How to "Achieve recyclability" patented technology

The invention relates to the field of shoe materials, and particularly discloses a TPU (thermoplastic polyurethane) foaming material recycled from leftover materials of shoe materials and a preparation process of the TPU foaming material. The TPU foaming material recycled from the shoe material leftover materials is prepared from the shoe material leftover materials, a recycling treatment agent, TPU particles, modified mica powder, a cross-linking agent, an antibacterial agent and an antioxidant. Wherein the preparation raw materials of the modified mica powder comprise ureido silane, di (triethanolamine) diisopropyl titanate and mica powder, and the mica powder is modified through the ureido silane and the di (triethanolamine) diisopropyl titanate, so that the mica powder is uniformly dispersed in a polyurethane matrix, the agglomeration phenomenon is reduced, and the wear resistance of the material is improved. And moreover, the shoe material leftover materials are recycled for secondary utilization, so that the production cost is effectively reduced.

The utility model discloses an industrial wastewater sludge metal recovery device, which relates to the field of industrial wastewater treatment, and adopts the technical scheme that the industrial wastewater sludge metal recovery device comprises a purification box which is of a cuboid structure, a dilution mechanism which is arranged at the top of the purification box and is used for diluting industrial wastewater sludge, and a recovery mechanism, the recycling mechanism is arranged in the purifying box and used for conducting metal recycling treatment on diluted liquid, the diluting mechanism comprises two water inlet pipes, the two water inlet pipes are both arranged at the top of the purifying box, a connecting box is arranged at the top of the purifying box, and the connecting box is fixedly connected to the water outlet ends of the two water inlet pipes; the device has the beneficial effects that the recovery efficiency of metal in industrial wastewater sludge is greatly improved, meanwhile, the device adopts the dilution mechanism and the recovery mechanism to work in real time, so that great benefits are brought to producers, and in addition, the device adopts the design of a plurality of powerful magnets, so that the production efficiency is greatly improved. And the metal recovery effect is better.

The invention relates to the technical field of food packaging, and discloses a flour packaging bag based on single material compositing, which comprises a middle-sealed folding bag and an eight-edge-sealed folding packaging bag, and comprises a first bag body and a first bag side applied to the middle-sealed folding bag, one side edge of the bag body is connected end to end and then is sealed to form a middle sealing part, and the other side edge of the bag body is sealed to form an eight-edge-sealed folding packaging bag. The first bag body and one end face of the bag side are connected and then are subjected to edge sealing to form a transverse sealing part, the position, located on the transverse sealing part, of the first bag body is coated with an adhesive tape, and after middle sealing is completed, the middle sealing part is attached to the adhesive tape. By adopting the unstretched PE film composite design, the tensile strength, the heat sealing performance and the tear resistance of the packaging bag are remarkably improved, the heat sealing temperature is as low as 120 DEG C or below, and the bag breaking risk is reduced; the method is suitable for complex bag shape processing; through the environment-friendly solvent-free adhesive and the dry type compound technology, the production efficiency is improved, the cost is reduced, meanwhile, efficient recycling and environment-friendly performance are achieved, and the packaging requirement of heavy objects is met.

The invention discloses a heat recovery device of an artificial climate chamber refrigerating system, and relates to the technical field of heat recovery. The heat recovery device of the refrigeration system of the phytotron comprises a refrigeration device, a discharge port is formed in the outer wall of the refrigeration device, and a guide mechanism is fixedly connected to the outer wall of the refrigeration device. According to the heat recovery device for the refrigerating system of the phytotron, by means of the special structural design of the bent pipe and the application of the Bernoulli principle, it is ensured that impurities carried by gas can smoothly flow into the impurity box under the pushing of pulse airflow through the pressure difference formed at the exhaust hole, and in the long-term operation process, even if the gas contains many impurity particles, the impurities can still flow into the impurity box. Impurities such as dust and greasy dirt are removed, deposition of the impurities in the bent pipe and a follow-up heat recovery component is reduced, the problem that an airflow channel is blocked due to impurity accumulation is solved, stable operation of the device is guaranteed, and the equipment maintenance cost and downtime caused by blocking are reduced.

The invention discloses a three-dimensional cobalt metal organic complex and a preparation method and application thereof, and belongs to the technical field of crystal materials. The three-dimensional cobalt metal organic complex with the chemical formula of [Co (DPDA) (4, 4 '-bpy)] n is prepared by selecting 2, 5-diketopiperazine-N, N'-diacetic acid, 4, 4 '-bipyridine and cobalt ions as raw materials. The three-dimensional network structure has a six-connection three-dimensional network structure of a dual-core [Co2 (COO) 2] structural unit, and the topological symbol is {312.424. 59}. Besides, the three-dimensional cobalt metal organic complex can quickly activate peroxymonosulfate to effectively degrade dyes, can degrade three dyes, namely methylene blue, malachite green and crystal violet, to 95.0% or above within 5 minutes, does not generate toxic byproducts in the degradation process, and has a relatively good reuse rate. In addition, the three-dimensional cobalt metal organic complex is mild in synthesis condition and simple in step, has excellent structural stability and good thermal stability, and has antiferromagnetism at high temperature.

This application relates to the field of polymer materials technology, providing a PET elastomer, composite material, dynamic covalent network polymer, and its preparation method and application. The elastomer is prepared by in-situ self-assembly of crown ether-primary amide dual-functionalized PET through melt blending. Its molecular network integrates a quasi-rotaxane supramolecular crosslinking network. This structure is formed by the host-guest interaction between the crown ether and the primary amide, and can act as a sliding crosslinking point to dissipate energy through the sliding of cyclic components. This application employs a two-step end-capping-in-situ self-assembly process to overcome the technical obstacles of low PET chain-end activity and poor compatibility between polyrotaxane and PET, achieving molecular-level dispersion of quasi-rotaxane in the PET matrix. This fully utilizes the molecular pulley effect to achieve breakthrough toughening of the elastomer. Simultaneously, it combines rigid nanofillers modified with aminosilane coupling agents to form a soft-hard synergistic network, enabling the PET composite material to maintain high toughness while simultaneously improving strength, modulus, and thermal properties.

The utility model discloses a recoverable material battery top cover plate structure, which belongs to the technical field of new energy batteries, and is characterized by comprising a top cover plate main body made of a single recoverable metal material, and a positive pole column and a negative pole column are respectively arranged on two sides in the top cover plate main body in a penetrating manner. A pressure relief channel is formed in the middle of the interior of the top cover plate body, an anti-explosion film is arranged in the pressure relief channel, a liquid injection hole is formed in the right side of the interior of the top cover plate body, and a sealing structure is arranged in the liquid injection hole. The sealing structure comprises a fixing screw, the fixing screw is in threaded connection to the top of the interior of the liquid injection hole, a connecting column integrated with the fixing screw is arranged at the bottom of the fixing screw, a rubber plug is rotationally connected to the bottom of the surface of the connecting column, and the surface of the rubber plug is in close contact with the inner wall of the liquid injection hole, so that the effect is achieved.

The invention relates to preparation of graphene-loaded nano zero-valent iron and application of the graphene-loaded nano zero-valent iron in chromium-containing wastewater treatment. The preparation method comprises the following steps: preparing 60mL of a KBH4 solution with the concentration of 0.5 mol / L as a solution A and 60mL of a FeSO4. 7H2O solution with the concentration of 0.1 mol / L as a solution B, adding 0.25 g of a single-layer graphene oxide dispersion liquid into the solution B, stirring for 30 minutes, recording as a solution C, slowly dripping the solution A into the solution C, performing suction filtration separation on powder C, and drying to obtain nZVI-coated GO. The graphene is loaded with nZVI to adsorb chromium in chromium-containing wastewater, and nZVI-GO-Cr formed after wastewater treatment can be used as an auxiliary tanning agent for leather tanning or retanning sections and has good recyclability.

The invention relates to a rotor. A rotor of an electric motor includes: a rotor core having a hole extending in an axial direction of the rotor; a permanent magnet disposed in the hole; a spacer member disposed in the hole and adjacent to the permanent magnet on an outer side of the permanent magnet in a radial direction of the rotor; a first adhesive layer configured to hold the permanent magnet in the hole and disposed between an inner surface of the hole and at least a portion of a side surface of the permanent magnet facing the inner surface; and a second adhesive layer configured to hold the spacer member in the hole and disposed between the inner surface and at least a portion of a side surface of the spacer member facing the inner surface. A cross-section of the hole perpendicular to the axial direction has a slot shape extending in a direction intersecting a circumferential direction of the rotor.

The invention discloses a method for assisting vegetable oil deacidification by using a blended membrane filtration technology, and belongs to the technical field of vegetable oil refining. The invention prepares alkaline microcrystalline cellulose by mixing potassium hydroxide and microcrystalline cellulose, crushing them, and sieving them; then, alkaline microcrystalline cellulose is mixed and cross-linked with carbon nanotubes; then, the alkaline microcrystalline cellulose-carbon nanotube complex is loaded on the surface of a ceramic membrane; finally, the alkaline microcrystalline cellulose-carbon nanotube complex is used to adsorb free fatty acids during the deacidification process of vegetable oil to reduce the acid value of crude vegetable oil, and improve the permeability and anti-pollution of the inorganic hydrophobic ceramic membrane to improve the filtration efficiency. The excellent adsorption performance of the alkaline microcrystalline cellulose-carbon nanotube complex can easily remove substances such as free fatty acids in crude vegetable oil, without the need to use chemical refining means, thereby achieving the purpose of simplifying the process and improving the oil yield. Physical filtration can retain the bioactive components and nutrients in the crude oil, thereby obtaining high-quality edible vegetable oil.

The invention relates to the field of sludge treatment, in particular to a sludge thickening and dewatering all-in-one machine which comprises a frame body unit, a thickening unit, a cleaning unit and a circulating unit. By arranging the circulating cleaning assembly, residual sludge on the surface of the circulating concentration assembly after the sludge is subjected to concentration and dehydration treatment is removed, and the sludge returns to a circulating line again, so that the sludge residue is reduced, and the circulating concentration and dehydration treatment of the sludge is realized at the same time; the dewatering and cleaning assembly washes and cleans sludge remaining on the surface of the dewatering and concentrating assembly, adhesion of the sludge to the surface of the dewatering and concentrating assembly is reduced, the sludge circulating and cleaning treatment effect is achieved, the use time efficiency and recyclability of the sludge concentrating and dewatering all-in-one machine are improved, residues in the sludge compression process are reduced, and the service life of the sludge concentrating and dewatering all-in-one machine is prolonged. In addition, circulating concentration and dehydration of the residual sludge are realized, and the problems that the sludge concentration and dehydration equipment cannot keep a relatively high dehydration rate all the time and the water content of the sludge treated by the concentration equipment in the later period is obviously increased are solved.

The application discloses a method for preparing hierarchical porous graphene-like biochar by synchronous graphitization-activation and application thereof, and relates to the technical field of biochar material preparation, and comprises the following steps: performing pre-carbonization treatment on girl fruit shells to obtain pre-carbonized materials; mixing the pre-carbonized materials with potassium carbonate to obtain mixed materials; performing high-temperature synchronous graphitization-activation treatment on the mixed materials under an inert atmosphere to obtain a crude product; performing acid pickling and water washing on the crude product to obtain a neutral product; and performing drying on the neutral product to obtain hierarchical porous graphene-like biochar HGB-2-9. The HGB-2-9 prepared by the method has high adsorption capacity, a fast adsorption rate, wide pH adaptability (pH=3-10), good ion strength tolerance (0.01-0.5 M sodium chloride), excellent recyclability and high removal efficiency in actual water bodies, and provides a green way for converting waste biomass into high-efficiency adsorption materials.

The invention provides an aluminum-based composite material manufacturing device and method based on wire and powder composite laser additive materials. The device comprises a laser system, a powder laying system, a wire feeding system, a movement mechanism and a control system. The powder spreading system spreads reinforced powder layer by layer, the wire feeding system feeds aluminum matrix wires, and the movement mechanism synchronously drives the laser system and the wire feeding system to move. The control system regulates and controls the powder laying thickness according to the descending amount, and layer-by-layer independent control over the supply amount of the reinforcing material is achieved; controlling the laser system to fuse at the first power to form an initial deposition layer on the surface of the powder layer; re-melting at second power to realize metallurgical bonding with the lower layer, and rolling the reinforcing material into a molten pool for mixing; and the descending amount and the powder falling amount of the next layer are calculated according to on-line monitoring data, and closed-loop circulation forming is formed. The problems that the volume fraction is not controlled, the reinforcing material is overheated, the material utilization rate is low and variable component forming is difficult are solved, and high-precision, high-efficiency and low-cost integrated forming is achieved.

The embodiment of the invention discloses an MOF (Metal Organic Framework) modified rice husk biochar composite material as well as a preparation method and application thereof. The method comprises the following steps: putting dry rice hull powder into a high-temperature atmosphere furnace, and heating to obtain rice hull biochar; uniformly mixing the rice husk charcoal, FeCl3 and water to obtain a first solution, and uniformly mixing phthalic acid, NaOH and water to obtain a second solution; and uniformly mixing the first solution and the second solution, and carrying out heating, solid-liquid separation, washing and drying on the obtained mixture. BC is used as a carrier, the solubility of MOF is reduced, secondary pollution is prevented, the recoverability is improved, meanwhile, the specific surface area and porosity of the composite material are improved, active sites are increased, and finally efficient adsorption of the composite material to rare earth ions is achieved. The MOF modified rice husk biochar composite material provided by the invention is a harmless and environment-friendly material, has the advantages of no toxicity, good chemical stability and the like, and meanwhile, the preparation method is simple and high in operability and has a relatively good application prospect.

The invention discloses a preparation method of a foam inhibiting and defoaming agent for a polyvinyl alcohol (PVA) aqueous solution, which comprises the following preparation steps: S1, preparing raw materials including ethylene oxide, propylene oxide, polyethylene glycol (PEG), absolute ethyl alcohol, a catalyst and silicone oil; according to the method, organic pollutants in the reactor are effectively removed, microbial cleaning not only has high selectivity and environmental protection property, but also can be carried out under mild conditions, damage of chemical cleaning agents to equipment is avoided, the organic pollutants in the reactor can be more thoroughly removed, and the method is suitable for industrial production. Residues possibly generated by a traditional chemical cleaning method are reduced, the cleaning effect is improved, the method does not depend on harmful chemicals, potential hazards to the environment and personnel are reduced, the requirement of green chemistry is met, the inner wall of the reactor is fully cleaned, residues of previous reactants or catalysts are avoided, the reaction purity can be improved, and the production cost is reduced. Generation of by-products is reduced, and the stability and quality of the final product are improved.

The invention discloses a protein-based adsorbent for selectively adsorbing metal rhenium ions and its application. The adsorbent is obtained by encapsulating alkylamine or ammonium salt in a phase transition aggregate formed by reducing protein with a reducing agent. The method of using the adsorbent is to put the adsorbent into a mixed solution containing rhenium and molybdenum to achieve selective adsorption of rhenium. The preparation and use methods of the adsorbent are simple, environmentally friendly, recyclable, and have a high selective adsorption capacity for rare metal rhenium. The adsorbent can be used for the separation of rhenium and molybdenum in industrial wastewater and ore leachate, and after adsorption-desorption cycles, it still has a high adsorption ratio.

The invention belongs to the technical field of hydrogel, and mainly relates to preparation and application of hydrogel with a doughnut structure. The invention aims to solve the problem that the existing seawater desalination material based on hydrogel is insufficient in recyclability. The preparation method comprises the following steps: mixing ZrOCl2. 8H2O and fumaric acid, and performing ultrasonic dispersion on the mixture and a multi-walled carbon nanotube to obtain a pretreated precursor; carrying out hydrothermal treatment on the pretreated precursor, and modifying the pretreated precursor with acryloyl chloride to obtain modified MOF801 (at) CNT; the modified MOF801-coated CNT, polyvinyl alcohol, cassava starch and a cross-linking agent are subjected to thermosensitive cross-linking treatment, and the hydrogel with the doughnut structure is obtained. The hydrogel has high application value in the field of seawater desalination, has self-adjustability of temperature response, is high in evaporation efficiency, can be recycled, and can efficiently desalinate seawater with different temperatures and components.

The invention relates to the technical field of propane catalytic oxidation, in particular to a silicon-based heterojunction material and a preparation method and application thereof based on mechanical force, the preparation method comprises the following steps: mixing copper oxide, silicon powder, titanium dioxide and water, grinding, and freeze-drying to obtain ground powder; and calcining the ground powder in a protective atmosphere to obtain the silicon-based heterojunction material. According to the invention, the silicon-mediated CuO-TiO2 nano heterojunction is constructed through a mechanical force assembly strategy. And nanocrystallization, uniform mixing and interface engineering of CuO and TiO2 are synchronously realized under the action of liquid phase shearing. In the process, the silicon powder not only serves as a doping agent, but also serves as a solid reducing agent, and selectively reduces Cu < 2 + > on the surface into Cu < + > under the driving of shearing force, so that an active structure with a Cu < + > / Cu < 2 + > redox cycle is constructed in situ, lattice distortion is induced, a large number of oxygen vacancies are generated, and the migration and activation capacity of oxygen is improved.

The invention discloses a light-emitting probe based on a europium-based metal-organic framework and a preparation method and application thereof, and belongs to the technical field of fluorescent sensing materials and food safety detection.The light-emitting probe is a europium-based metal-organic framework material, the chemical formula of the light-emitting probe is Eu (phen) (5-hipa) NO3 <->, phen is 1, 10-phenanthroline ligand, 5-hipa is 5-hydroxyisophthalic acid ligand, and the molecular weight of the Eu (phen) (5-hipa) NO3 <-> is larger than that of Eu (phen) (5-hipa) NO3 <->. The light-emitting probe takes a binuclear Eu cluster as a metal center. According to the luminous probe based on the europium-based metal-organic framework, the synthesized europium-based metal-organic framework material can be used as a bifunctional fluorescent probe, and specific recognition and quantitative detection of carbaryl and enrofloxacin are realized in an aqueous solution; the method has the remarkable effects of high sensitivity, strong anti-interference capability, recyclability and simplicity, convenience and rapidness in operation.

The invention discloses a processing technology for a stainless steel automobile valve, and relates to the technical field of automobile parts processing. It comprises the following steps: Step A: High-frequency heating: heating the stainless steel wire rod material by high-frequency heating; Step B: Molding: cutting the heated stainless steel wire rod material by a molding machine, and then molding it into a valve body by a multi-station mold; Step C: Reprocessing: processing internal threads and external threads on the valve body; Step D: Vulcanization: cleaning and drying the valve body, vulcanizing the rubber through a vulcanization mold after coating with rubber to form a finished product; Step E: Finished product inspection: inspecting the finished product, and packaging and warehousing after the inspection is qualified. The present invention can manufacture stainless steel automobile valves with lower cost and better performance; stainless steel is used as the raw material, and its high hardness and high tensile strength significantly improve the service life and overall quality of the valve, providing a more reliable guarantee for the tire; stainless steel is more environmentally friendly than brass.

Provided is a gas barrier laminate that is simple to produce and has excellent water vapor barrier properties and gas barrier properties. Also provided are a gas barrier laminate further excellent in recyclability and heat sealing properties, and a method for producing it. The gas barrier laminate has a water vapor barrier layer and a gas barrier layer in that order on at least one surface of a paper support, wherein the water vapor barrier layer contains a layered inorganic compound, a cationic resin and an anionic binder, the aspect ratio of the layered inorganic compound is 50 or more, the thickness of the layered inorganic compound is 200 nm or less, the content of the layered inorganic compound is 0.1 to 800 parts by mass relative to 100 parts by mass of the anionic binder, and the gas barrier layer contains a water-soluble polymer. The invention is also a method for producing the gas barrier material by coating.

The utility model discloses a wax liquid cleaning and recycling device which comprises a cleaning container mechanism, and a material distributing mechanism is installed in the cleaning container mechanism. The wax liquid is distributed into the cleaning container through the distribution mechanism to be cleaned, and the wax liquid with the density smaller than that of water floats above the water layer in the cleaning process; a wax liquid discharging pipe is installed on the cleaning container mechanism, the feeding end of the wax liquid discharging pipe is located at the upper end in the cleaning container mechanism, and the discharging end of the wax liquid discharging pipe is located on the outer side of the cleaning container mechanism. The material distributing mechanism comprises a feeding structure, the discharging end of the feeding structure communicates with a material distributing structure, and the material distributing structure comprises a material distributing bin; a plurality of material distribution through holes are formed in the material distribution bin; and the material distribution outlet pipe is communicated with the bottom of the material distribution bin. According to the device, the technical defect that waste wax generated during wax mold demolding cannot be conveniently recycled is effectively overcome, impurities in the wax are fully removed in a washing mode, wax liquid can be recycled, and the device is economical, environmentally friendly and convenient and easy to operate.

The utility model discloses a lubricating oil filtering and recycling device which comprises a filtering hopper and a reduced pressure distillation bin, the filtering hopper is arranged at the upper end of the side portion of the reduced pressure distillation bin, a feeding pipe is connected between the lower end of the filtering hopper and the upper end of the side portion of the reduced pressure distillation bin, and an electric valve is arranged in the feeding pipe. A frame is arranged at the upper end of the interior of the filter hopper, a filter screen is arranged between the lower ends of the frame, clamping blocks are arranged at the two ends of the upper portion of the filter hopper, clamping grooves are formed in the two ends of the frame, the clamping blocks are connected with the clamping grooves in a clamped mode, handles are hinged to the two ends of the frame, and an evaporator is arranged at the bottom of the reduced pressure distillation bin. A supporting cover is arranged on the side portion of the reduced pressure distillation bin, and a vacuum pump is arranged in the supporting cover. According to the utility model, filtered impurities are easy to clean, and the recovery effect is good.

This invention discloses an integrated chip removal guide device based on a grinding worktable, including a machine bed. One side of the machine bed is a chip removal position, and a chip removal section is provided on one side of the chip removal position. The outer side of the chip removal section has a separation section, and a recovery section is provided on the side of the separation section away from the chips. The chip removal section includes: a body, located at the bottom of the machine bed to support the machine bed, and a chip removal groove formed on the inner side of the body for contacting the chip removal position; and a conveyor belt, located inside the body and extending through the body into the chip removal groove. A motor assembly for driving the conveyor belt is provided on the inner side of the conveyor belt. This application, by providing a chip removal section that facilitates chip recovery during use, allows chips to be collected from the edge of the machine bed during use, reducing human intervention and minimizing chip residue during recovery.

The application relates to the technical field of acrylic plate production, and discloses a material uniformizing device for acrylic plate production, which comprises a base plate, two collecting assemblies for collecting excess acrylic raw materials are arranged above the base plate, two extruding wheels for extruding and forming into acrylic sheets are arranged between the two collecting assemblies, a raw material heating box for heating the raw materials into plastic fluid is arranged above the two extruding wheels; one side of each of the two extruding wheels close to the fixed plate I is rotationally connected to the fixed plate I, and the other side of each of the two extruding wheels away from the fixed plate I is rotationally connected to the fixed frame, so that the positions of the two extruding wheels correspond to each other and remain unchanged, the extruding force is balanced, the acrylic plate is more uniformly formed, the thickness of the uniform acrylic plate can be reduced, the bending stiffness and hardness of the acrylic plate are increased, the strength and durability of the acrylic plate are improved, the structure weight and transportation cost of the uniform and light acrylic plate are reduced, and the service life of the acrylic plate is increased.

The present application relates to the technical field of super-hydrophilic / super-oleophilic materials, and particularly to a preparation method of a super-hydrophilic photo-thermal composite material with the ability to absorb heavy oil underwater, which comprises the following steps: first, natural oligomeric amino polysaccharide is used to synergistically aminate raw cotton with amino silane coupling agent; then, based on the synergistic amination system of the raw cotton, polymeric active units and nano-scale heat-conducting particles are introduced into the raw cotton; and finally, the mixed liquid phase is cured by the hyperbranched polymer forming method to complete the construction of the super-hydrophilic photo-thermal composite material with the ability to absorb heavy oil underwater by the one-pot method. The raw materials of the present application are green and environmentally friendly, and the experimental steps are simple, safe and convenient. The prepared product has excellent super-hydrophilicity and super-oleophilicity in an air atmosphere, with a contact angle of 0°. In an underwater atmosphere, the product has super-hydrophilicity and excellent oil absorption performance, and still has stable super-hydrophilicity and oil absorption capacity after cyclic utilization in different atmospheres. In addition, the product has good photo-thermal performance and good absorption and separation capacity for viscous oil phases, which lays a foundation for wider application.

This invention relates to the field of water treatment technology, and particularly to a system and method for removing small-molecule organic matter based on field energy granulation and agglomeration. The system includes an initial mixing section and an electrostatic field enhancement section and a post-mixing section connected sequentially to the initial mixing section. Through the effects of initial mixing and electrostatic field enhancement, medium-sized polymers are first formed, which combine with small-molecule organic matter to form complexes, encapsulating the small-molecule polymers. Then, during post-mixing, coagulants are continuously added and adhere to the initial complexes, forming a coral reef-like surface with a higher zeta potential and a larger specific surface area. Each newly formed surface layer combines with pollutants and covers the previous layer, thereby encapsulating more small-molecule organic matter into the flocs and improving the removal rate of small-molecule organic matter. This solves the problem of low removal rates of small-molecule organic matter in existing coagulation processes, which cannot meet the requirements for wastewater recycling.

The invention relates to the technical field of compositions of high-molecular compounds, and particularly discloses a polyethylene composition, a foam board thereof and a preparation method of the foam board. The polyethylene composition is prepared from the following raw materials in parts by weight: 15 to 25 parts of high-density polyethylene, 25 to 35 parts of regenerated high-density polyethylene, 25 to 35 parts of regenerated low-density polyethylene, 5 to 15 parts of calcium carbonate master batch and 0.1 to 0.5 part of AC foaming agent. The polyethylene composition disclosed by the invention has the beneficial effects that the regenerated high-density polyethylene and the regenerated low-density polyethylene used in the polyethylene composition are both prepared by recovering waste polyethylene products; the material prepared from the polyethylene composition can meet the requirements of transportation packaging, advertisement display, temporary buildings and other use scenes where the requirements for the strength and flexibility of the polyethylene material are not very high, resource recycling is achieved, and resource waste and environmental pollution are reduced.

The application discloses a cellulose cross-linked carbon sponge / MXene composite material and a preparation method and application thereof, and belongs to the technical field of noble metal resource recovery and functional adsorption materials. x MXene nanosheets are used as a functional component, and cellulose nanofilaments are introduced as an interface cross-linking agent. The composite material utilizes the synergistic effect of nitrogen coordination sites in the CMS and low-valence titanium active sites in the MXene, realizes efficient adsorption and in-situ reduction of Au(III), exhibits good selectivity for Au(III) in a complex multi-ion system, and is suitable for the recovery of noble metal ions in a complex system such as electronic waste leaching liquid.