23results about How to "Solve difficult to recycle" patented technology

The utility model relates to a polluted landscape water body treatment device, including coupling type microbial fuel cell and external circuit, coupling type microbial fuel cell includes cell cathode, fixed ring, gasbag, cell anode, PVC flexible pipe, proton exchange membrane, PVC flexible pipe is filled with electrolyte, the cell anode is planted with submerged plant, the proton exchange membrane is planted on the PVC flexible pipe. And the external circuit comprises a light-emitting circuit, a resistance circuit and a heating circuit which are connected in parallel between the battery cathode and the battery anode. Electric energy generated by the microbial fuel cell is used for providing power for photocatalytic oxidation, magnetic flocculation recovery and water body temperature rise in the treatment process, no external power source is arranged, the water body treatment capacity is greatly improved, meanwhile, the later operation and maintenance cost is reduced, aquatic plant and microbial treatment is introduced into the system, and the water body treatment efficiency is improved. A mutual promotion effect can be achieved with the microbial fuel cell, so that the power generation capacity of the cell and the processing capacity of the system are improved.

The present application belongs to the technical field of glass fiber sizing agent, and particularly relates to an anti-creep glass fiber sizing agent and a preparation method thereof. The anti-creep glass fiber sizing agent comprises effective components and water, and the solid content of the anti-creep glass fiber sizing agent is 3-12%. The effective components comprise the following components according to weight percentage: maleic anhydride modified long-chain branched polyolefin wax 65.5-86.9 wt.%, coupling agent 5-10 wt.%, nucleating agent 1-8 wt.%, physical cross-linking component 5-12 wt.%, initiator 0.1-0.5 wt.%, and surfactant 2-4 wt.%. The present application can effectively solve the problem of insufficient anti-creep ability of the glass fiber reinforced polypropylene material in the prior art, and at the same time, the material has good mechanical properties and fatigue resistance, which plays an important role in improving the long-term dimensional stability of the polypropylene material.

A plastic pivoting shaft comprises a body, the body is made of plastic and is a solid cylinder, a cutting groove is formed in the body, the depth of the cutting groove extends from the outer periphery of the body to the center of the body, and the cutting groove is provided with a bottom and a top which are oppositely arranged. The width of the cutting groove is gradually expanded from the bottom to the two sides of the cutting groove to the top, so that the bottom of the cutting groove is in a U shape, a margin space can be provided when the body expands with heat and contracts with cold due to the arrangement of the cutting groove, the diameter of the body is hardly changed due to the influence of thermal expansion and cold contraction, and meanwhile the compression performance of the body can be improved.

The invention provides a method for agglomeration flotation of refractory spodumene ore, belonging to the technical field of ore dressing. The method comprises the steps of grinding raw ore, stirring and slurrying, shearing agglomeration, spodumene roughing, spodumene concentration, spodumene scavenging and the like, and finally obtains spodumene concentrate. The method of the invention can effectively improve the recovery effect of fine spodumene, and is a stable, efficient, adaptable and high recovery index new ore dressing method, which is suitable for promotion and application.

The invention discloses a method for recovering MK-7 in crystallization mother liquor, which comprises the following steps of: performing vacuum concentration on the crystallization mother liquor to remove a residual solvent, mixing and stirring the crystallization mother liquor and a solvent I until the crystallization mother liquor and the solvent I are completely dissolved, mixing a buffer solution and a solvent II, mixing and stirring the two mixed solutions to react, centrifuging, taking an upper organic phase, and refining through a reverse phase silica gel column to obtain the MK-7 in the crystallization mother liquor. Then adding the vitamin K2 crude product into a methanol solution to be heated and dissolved, slowly adding water until MK-7 is separated out, cooling to enable MK-7 to be continuously separated out, separating MK-7 crystals after separation is finished, and drying. According to the scheme, most impurities such as phospholipid impurities and pigments in the crystallization mother liquor are separated out by adopting the three-phase mixed liquor, a purified crude product of the vitamin K2 is obtained, then relatively pure MK-7 crystals are obtained through recrystallization by utilizing the solubility difference of MK-6 and NK-7 in methanol solutions with different concentrations and at different temperatures, the process is simple to operate, the production cost is reduced, and the method is suitable for industrial production. The detected purity of the separated and recovered MK-7 is 85%-90%, and the purity after recrystallization can reach 95%.

This invention relates to the field of ion sieve technology, providing a titanium-based lithium-ion adsorbent, its preparation method, and its applications. The invention involves pyrolyzing NH2-MIL-125(Ti), then mixing it with lithium carbonate for calcination, granulating it using an ethylene-vinyl alcohol copolymer as a binder, and finally acid washing to obtain the titanium-based lithium-ion adsorbent. This invention integrates metal-organic framework (MOF)-derived carbon intercalation, nitrogen doping, and polymer-assisted granulation into a single process, preparing a particulate adsorbent with a hierarchical porous structure, strong hydrophilicity, and abundant active sites, showing great potential for industrial applications. Example results show that the adsorbent of this invention, under conditions of pH=12 and 25℃, exhibits a high Li-ion concentration of 24 h. + The adsorption capacity reached 33.95 mg / g. After five cycles of adsorption and desorption, the adsorption capacity could still reach 96.9% of the initial adsorption capacity, and the titanium dissolution loss in each cycle was only about 0.4%.

The utility model discloses an RFID intelligent tool cabinet, and relates to the technical field of radio frequency automatic identification. The cabinet comprises a cabinet body, an extending mechanism is arranged in the cabinet body, the extending mechanism comprises a mounting plate, a sliding groove is formed in the bottom of the mounting plate, electromagnets are fixedly connected to the inner walls of the two sides of the sliding groove, a containing box is arranged above the sliding groove, and a first extending plate is slidably connected to the bottom of the containing box; the bottom of the first extension plate is slidably connected with a second extension plate, the two sides of the bottom of the second extension plate are fixedly connected with magnets, and the rear side of the bottom of the second extension plate is fixedly connected with a clamping block. And the containing box can automatically descend by a certain height, a user can conveniently take and use tools, automatic descending and automatic returning of the tools are achieved, and the working efficiency and convenience are improved.

The invention discloses a green deplating solution for a photovoltaic welding strip and a valuable metal separation and recovery method. The deplating solution is an aqueous solution, and solutes comprise a main oxidizing agent, a green acidic auxiliary agent, a complexing cosolvent and a copper special corrosion inhibitor; the main oxidant is selected from sodium persulfate, ammonium persulfate and ferric nitrate; the green acidic auxiliary agent is selected from sulfamic acid, methanesulfonic acid, tartaric acid and citric acid; the complexing cosolvent is selected from sodium chloride, ammonium chloride and thiourea; and the corrosion inhibitor is selected from benzotriazole, methyl benzotriazole and 2-mercapto benzimidazole. The waste welding strip is subjected to an immersion reaction at the temperature of 20-60 DEG C, tin, lead and / or silver enter the solution in the form of complex ions, and a copper substrate is kept bright and clean; and after solid-liquid separation, gradient recovery of silver extraction by replacement, lead separation by temperature difference crystallization and tin precipitation by hydrolysis can be adopted, or total replacement recovery by adding excessive zinc-based displacer can be adopted. The separation and recovery method is rapid in deplating, free of white films, low in copper loss and suitable for silver-containing and silver-free solder strips.

The invention discloses preparation of a heterojunction photocatalyst and application of the heterojunction photocatalyst in treatment of uranium-containing wastewater. The preparation comprises the following steps: step 1, preparing polystyrene nanospheres; step 2, preparing PS-TiO2 (Polystyrene); and 3, adding PS-TiO2 prepared in the step 2 into ethanol, carrying out ultrasonic dispersion, adding a carbon quantum dot solution, carrying out a stirring reaction at a certain temperature for a certain time, carrying out centrifugation, washing with ethanol and deionized water to obtain a faint yellow product, and drying the faint yellow product to obtain the heterojunction photocatalyst. The heterojunction photocatalyst PS-TiO2-coated CQDs is synthesized by taking a support type material polystyrene nanosphere as a substrate, coating the surface of the substrate with a photocatalyst TiO2 and introducing carbon quantum dots to construct an S-type heterojunction coupling in-situ surface active site modification strategy, and the heterojunction photocatalyst PS-TiO2-coated CQDs shows extremely high photocatalytic activity and special selectivity to uranium, and can be applied to the field of uranium treatment. The PS-TiO2-coated CQDs show excellent ion interference resistance, chemical stability and cycle performance in a uranium-containing solution, and the photocatalytic removal rate of the PS-TiO2-coated CQDs to U (VI) is greater than 99%.

The utility model relates to a pickling residue filtering device which comprises a gravity separation tower, a filtering bag and a recycling pool, the gravity separation tower is arranged in the recycling pool and provided with a medicament delivery pump and a drainage pump, the medicament delivery pump is communicated with the top of the gravity separation tower through a pipeline, and the drainage pump is communicated with the top of the gravity separation tower through a pipeline. A bearing table is arranged in the recovery pool, the filter bag is arranged on the bearing table and located below a valve at the bottom of the gravity separation tower, and a recovery pump is arranged on the recovery pool and communicates the recovery pool with the top of the gravity separation tower through a pipeline. According to the device disclosed by the utility model, pickling residues are settled into sludge, the sludge is filtered, chemicals in the sludge are recycled, and the cured sludge is recycled, so that the problems that the chemical utilization rate is low and the sludge is difficult to recycle are effectively solved.

The invention discloses a magnetic resin immobilized ionic liquid heteropolyacid catalyst and a preparation method and application thereof.The preparation method comprises the steps that nano Fe3O4, paraformaldehyde and 3-hydroxyl-N, N-dimethylaniline are mixed in an organic solvent for a reaction, and magnetic resin microspheres are obtained through washing, drying and curing; sequentially reacting the obtained magnetic resin microspheres with 1, 3-propane sultone and heteropolyacid to obtain a magnetic resin immobilized ionic liquid heteropolyacid catalyst; alcohol and hydrogen peroxide are used as raw materials, the magnetic resin immobilized ionic liquid heteropolyacid is used as a catalyst, and a reaction is performed in an oil bath at 70-110 DEG C for 0.5-4 h; cooling after the reaction is finished, separating the catalyst through an external magnetic field, washing and drying the catalyst with diethyl ether, directly and repeatedly using the catalyst for the next reaction, and recrystallizing the product to obtain a refined product. The problems that a traditional heteropolyacid catalyst is easily dissolved in a polar solvent in the using process and is difficult to separate, the preparation time of the catalyst is long and the like are solved.

This invention discloses a novel underwater deployment device and application method for a cross-medium aircraft, relating to the field of aircraft deployment platform design. The device includes: a base fixed to the bottom of a water body; a deployment compartment for storing the aircraft and fixedly connected to the base; and a communication module disposed within the deployment compartment for docking and communication with the aircraft. The communication module includes a control unit that communicates with the actuators and the communication module within the deployment compartment. The deployment compartment is located underwater. The communication module is located either within the base or the deployment compartment, or it may float on the water surface via a buoyancy airbag. This deployment device operates underwater and deploys and recovers the aircraft wirelessly. It features a simple structure, low cost, minimal equipment requirements, high reliability, and a degree of concealment.

The invention discloses a method for preparing a terephthalate plasticizer through low-temperature esterification. According to the method, the cucurbit [6] urea-modified Oxyma catalyst is used for activating terephthalic acid to form an active intermediate, the esterification reaction energy barrier is reduced, the terephthalate plasticizer is prepared at low temperature, and meanwhile, the cucurbit [6] urea-Oxyma catalyst subjected to the esterification reaction is directionally recovered through a competitive guest under the host-guest action. The method realizes preparation of the terephthalate plasticizer through low-temperature esterification, has high product yield, can directionally recover the catalyst Oxyma, and accords with the green and environmental protection concept.

The invention discloses a bimetallic composite oxide modified ceramic membrane as well as a preparation method and application thereof, and belongs to the technical field of ceramic membranes. According to the invention, industrial-grade aluminum oxide is used as a raw material, and the binder, the pore-forming agent, the fluxing agent, the anti-shrinking agent and the like are added, so that the roasting temperature of the ceramic membrane support is reduced, and the manufacturing cost of the ceramic membrane is reduced; by constructing a bimetallic oxide composite coating with a catalytic ozonation function on the surface of the ceramic membrane, oxidative degradation of organic pollutants on the surface of the ceramic membrane is realized, so that the anti-pollution performance of the ceramic membrane is improved, and the service life of the ceramic membrane is prolonged. The problems that an existing ceramic membrane is high in manufacturing cost and prone to membrane pollution are solved.

The invention belongs to the technical field of pesticide package treatment, and particularly relates to a recoverable pesticide package treatment method which comprises the following steps: S1, packaging and binding pesticide packages, conveying the pesticide packages into a treatment station through a conveying device, spraying the pesticide packages through a spraying device, and transferring the pesticide packages to a drying area for drying treatment to a preset standard after spraying; s2, the dried pesticide package is integrally packaged and transferred into a soaking pool, the soaking pool is heated to a preset standard and constant time, after pesticide residues on the surface of the pesticide package are fully dissolved, chemical treatment is conducted on the interior of the soaking pool, and the pesticide package is transferred into a cooling pool to be cooled and cleaned; through execution of the method, the purpose of integrated recovery without classifying pesticide packages can be achieved, the recovery efficiency is also improved, meanwhile, the pesticide in the pesticide packages and the packages are subjected to separation treatment, the problem that the environment is easily polluted by pesticide residues can be solved, and the problem that the pesticide residues carried in the pesticide packages are not easy to recover is also solved.

The invention discloses a preparation method of aluminum silicate nanofiber / acrylamide-sodium acrylate copolymer composite aerogel, which comprises the following steps: modifying aluminum silicate nanofiber through an amino silane coupling agent to obtain aminated aluminum silicate nanofiber; carrying out a substitution reaction of amino and chloroalkene on the aminated aluminum silicate nanofiber to introduce double bonds on the surface of the aminated aluminum silicate nanofiber; the preparation method comprises the following steps: by taking aminated aluminum silicate nanofiber with introduced double bonds as a cross-linking agent and acrylamide and acrylic acid as monomers, carrying out cross-linking copolymerization reaction by a solution polymerization method, and freeze-drying reaction liquid to obtain the aluminum silicate nanofiber / acrylamide-sodium acrylate copolymer composite aerogel. The heavy metal ion adsorption capacity of the adsorbent is improved, and the adsorbent is easy to recycle and has excellent durability.

The invention discloses a K / FeS / g-C3N4 / TiO2 (at) PVDF membrane for photocatalytic oxidation, a preparation method and application, through SO2 and CO2 generated by pyrolysis of K4 [Fe (CN) 6] and K2SO3, gaps are generated in a microstructure of g-C3N4, the specific surface area is higher, adsorption of organic pollutants is enhanced, the reaction rate is increased, a FeS / g-C3N4 / TiO2 heterojunction structure is constructed, and the photocatalytic oxidation performance of the membrane is improved. And carbon defects or nitrogen defects generated by K ionization are introduced into the structure, so that stable electron channel connection and light energy absorption and conversion paths are realized, the light response efficiency is improved, the recombination rate of photo-generated electron holes is reduced, and the free radical yield is improved. The membrane material is applied to a circulating aquaculture water body treatment system, odor substances are degraded through photocatalytic oxidation, and deep purification of water is achieved.

The invention belongs to the technical field of sewage treatment, and particularly relates to an efficient sewage treatment agent and a preparation method thereof, and the efficient sewage treatment agent comprises the following components in parts by weight: 20-30 parts of a CaWO4 / ZIF-67 composite material, 10-20 parts of Al2 (SO4) 3, 5-10 parts of Fe2O3, 0.5-2 parts of NaHSO3, 1-5 parts of Na2SiO3 and 3-15 parts of MnO2. The ZIF-67 has high adsorption efficiency due to high porosity and adjustable characteristics, the ZIF-67 and the CaWO4 are compounded, and the composite material is endowed with magnetism, so that the composite material can quickly adsorb pollutants to the surface, the problems that the single ZIF-67 is easy to agglomerate and difficult to recycle are solved, the flocculation effect and the reduction effect are combined, the COD (Chemical Oxygen Demand) of sewage is further reduced, and the sewage treatment efficiency is improved. The effect of efficiently purifying the sewage is achieved.

The present invention provides a method for comprehensively recovering tantalum, niobium and lithium from lithium-containing ore dressing waste residue, which belongs to the field of ore dressing technology. The present invention recovers coarse-grained lithium mica by screening through a high-frequency vibrating screen, recovers tantalum and niobium minerals by "spiral chute roughing-spreading chute sweeping-shaking table selection", and recovers fine-grained lithium mica by flotation method with YF2-1 as a dispersant and YP-02 as a collector, thereby realizing the comprehensive utilization of lithium-containing ore dressing waste residue and improving the level of comprehensive resource utilization. The present invention is a high-efficiency ore dressing method with low cost, good separation effect, high separation index, good stability and strong adaptability, which is suitable for promotion and application.

The invention discloses a preparation method for in-situ growth of a heterojunction photocatalyst on a fiber surface, and belongs to the field of preparation methods of composite photocatalytic materials. The preparation method comprises the following steps: firstly, sequentially adding zinc nitrate and polyacrylamide into deionized water, and performing ultrasonic dispersion to obtain a solution A; then (carbon dot modified titanium dioxide) CDs-TiO2 and dimethylimidazole are sequentially added into deionized water, and ultrasonic treatment is carried out to disperse the mixture, so that a solution B is obtained; putting the non-woven material into the solution A for ultrasonic treatment, so that the non-woven material is combined with the zinc ions; then putting a sample loaded with zinc ions into the solution B for ultrasonic treatment, enabling CDS-TiO2 to be packaged into pores of ZIF-8 in the process of growing the ZIF-8 on the surface of the fiber in situ, and forming a packaged heterojunction catalyst CDS-TiO2 / ZIF-8 on the surface of the fiber in situ; and finally, washing the sample with deionized water and drying. The fiber-based packaging type heterojunction photocatalytic material has excellent thermal stability and chemical stability, is high in photocatalytic activity and simple in process, and can be recycled.

A resin conveying system comprises a floor structure, a storage assembly, a receiving tank, a conveying pipe and a discharging pipe. The receiving tanks are respectively arranged on layers at different height positions, and the plurality of receiving tanks are horizontally arranged on the same layer; the conveying pipe vertically and sequentially passes through the multiple layers and gradually and obliquely extends upwards in the arrangement direction of the receiving tanks corresponding to part of the layers; one end of the conveying pipe communicates with the storage assembly, the lower end of the discharging pipe communicates with the other end of the conveying pipe, and the upper end of the discharging pipe communicates with the input end of the receiving tank. According to the scheme, the function of outputting resin to a plurality of receiving tanks through a single material storage assembly can be achieved, the material storage assembly can be recycled under the gravity effect through the structure of the discharging pipe and the conveying pipe in the vacancy period, and the problems that after the conveying pipe conveys the resin, the residual resin in the pipe is difficult to recycle, and the resin is wasted are solved.

The invention relates to the technical field of sewage treatment, and provides a sewage treatment device. The invention provides a sewage treatment device. The sewage treatment device comprises a sewage containing unit, a membrane separation unit, a photocatalysis treatment unit, a photocatalyst recovery unit and a target liquid recovery unit, the sewage containing unit is provided with a sewage containing cavity and a sewage outlet which can be communicated with the sewage containing cavity; the membrane separation unit is provided with a membrane separation treatment inlet and a membrane separation treatment outlet; the membrane separation treatment inlet is communicated with the sewage outlet; the photocatalytic treatment unit is provided with a reaction cavity, a photocatalytic treatment inlet and a target liquid outlet; a photocatalyst is arranged in the reaction cavity; the membrane separation treatment outlet is communicated with the target liquid outlet through the photocatalysis treatment inlet and the reaction cavity in sequence; the target liquid recovery unit is provided with a target liquid accommodating cavity and a target liquid collecting opening; the target liquid discharge port is communicated with the target liquid accommodating cavity through the target liquid collecting port; the photocatalyst recovery unit is arranged on the photocatalytic treatment unit and can recover the photocatalyst from the sewage in the reaction cavity.

The underwater pipeline robot fault variable foot plate comprises a mounting foot plate, a connecting plate capable of sliding outwards is slidably connected to one side of the mounting foot plate, a connecting sleeve is arranged on the side, away from the mounting foot plate, of the connecting plate, and an inner telescopic sleeve is slidably connected to the inner side of the connecting sleeve; the outer side of the connecting sleeve is slidably connected with an outer telescopic sleeve which alternately stretches out and draws back with the inner telescopic sleeve. An annular electromagnet sleeved with a connecting sleeve is arranged on the side, away from the mounting foot plate, of the connecting plate, the outer telescopic sleeve is provided with an annular iron ring matched with the annular electromagnet, a supporting spring is arranged between the annular magnet and the annular iron ring, a mounting frame is arranged on the side, away from the connecting plate, of the inner telescopic sleeve, and a driving wheel is mounted on the mounting frame. The edge of the outer telescopic sleeve is outwards provided with a plurality of supporting columns, and the free end of each supporting column is rotationally connected with a supporting ball. By improving the structure of the foot plate, friction between the foot plate and the pipe wall is reduced through the balls after power failure, and the robot can be taken out and recycled more easily.