125 results about "Three dimensional electrode" patented technology

The invention belongs to the field of electroencephalogram signal processing, and provides a time-frequency space electroencephalogram emotion recognition method based on three-dimensional space position embedding, which comprises the following steps of: firstly, constructing a three-dimensional electrode space position matrix based on an international 10-20 system standard, determining a space adjacency relation between electrodes, and calculating a phase locking value to obtain a functional connection matrix; then, deep feature fusion of an electrode spatial position matrix and a functional connection matrix is realized by adopting a hierarchical cross Transform architecture, the spatial position matrix represents spatial distribution features of a cerebral cortex region, and the functional connection matrix quantifies phase synchronization features of cross-brain region neural oscillation and simulates a brain spatial topological structure; and finally, extracting time, frequency and spatial features of the electroencephalogram signals through combination of a graph attention network and bidirectional long-short-term memory with an attention mechanism for emotion recognition. The method can effectively extract space structure information highly related to the emotional state, and significantly improves the accuracy of emotion recognition.

The invention discloses a recovery treatment process of heavy metal production wastewater, and relates to the technical field of wastewater treatment. Adjusting the pH value of the wastewater through pretreatment and stirring; 5%-10% of nanometer seed crystals are added in the seed crystal reinforced vulcanization process, a vulcanizing agent is controllably added, and large-particle-size precipitates are generated through pulse stirring; magnetic field separation is performed after magnetic microsphere adsorption; carrying out selective adsorption and acid regeneration on the chitosan-based magnetic resin; micro pollutants are removed through cooperation of the three-dimensional electrode and photocatalysis; concentrating 10-20 times by membrane distillation to enrich heavy metals; metal simple substances with the purity larger than or equal to 99.5% are recycled through pulse electrodeposition; and after deep treatment, the wastewater reaches the standard to be discharged or recycled (the recycling rate is greater than or equal to 70%). The process innovation comprises the steps of enhancing the seed crystal to improve the vulcanization efficiency by 30%, realizing rapid separation by a magnetic material, reducing the energy consumption by 40% by a three-dimensional electrode coupling membrane method, and constructing a vulcanizing agent regeneration (the regeneration rate is greater than or equal to 85%) and heavy metal closed-loop recovery system. Compared with a traditional process, the heavy metal removal rate is larger than or equal to 99.8%, the treatment cost of each ton of water is reduced by 25%-30%, and the method has the advantages of high efficiency, low consumption, environmental protection and recycling and is suitable for multi-metal complex wastewater.

The invention provides an all-solid-state battery three-dimensional electrode preparation method based on aerosol jet printing, and the method comprises the following steps: constructing a three-dimensional porous frame by using a conductive skeleton material through an aerosol jet printing technology; depositing an active material and a solid electrolyte on the surface of the frame layer by layer to form a gradient distribution layer; generating an interface transition layer by adopting ultraviolet curing or rapid heat treatment; and in combination with a closed-loop feedback control system, deposition parameters are dynamically adjusted. A conductive active material and a solid electrolyte are uniformly distributed on the surface of a three-dimensional porous framework in a layer-by-layer deposition manner through an aerosol jet printing method, and the solid electrolyte and an electrode material form a close contact interface by accurately controlling a jet path, a nozzle diameter and a material deposition rate; the interface side reaction easily caused by traditional high-temperature sintering is eliminated, and the interface impedance is reduced; and furthermore, the transmission efficiency of the lithium ions at the interface is improved through an ultraviolet curing or rapid heat treatment process.

The invention relates to an electrofluid-driven deformable flexible fiber pump and a manufacturing method, the flexible fiber pump comprises a flexible pump body, a three-dimensional electrode module and an external voltage driving control unit, the flexible pump body is made of a thermoplastic plastic material, and the whole flexible pump body is of a hollow tubular structure; the three-dimensional electrode module comprises a polytetrafluoroethylene film and electrodes, and the electrodes comprise a positive electrode and a negative electrode; the polytetrafluoroethylene film is fused with the inner surface of the flexible pump body, the external voltage driving control unit is electrically connected with the positive electrode and the negative electrode, and the manufacturing method mainly comprises the steps of electrode printing, electrode winding and thermoplastic forming. Compared with the prior art, the electrode has the advantages that a planar electrode structure is converted into a three-dimensional structure through winding, so that the integration of the electrode is enhanced, and the application range of the three-dimensional electrode design is widened; and the shapes of the three-dimensional electrode module and the flexible pump body are fixed while heating, so that the electrode can adapt to the change of the shape of the pump, and the flexible deformation capability of the pump is improved.

The utility model relates to the technical field of wastewater treatment, and discloses a three-dimensional electrode frame structure for treating sewage and wastewater by electro-catalytic oxidation degradation, which comprises an electrolysis box body, a plurality of electrode frames, a plurality of electrode frames, a plurality of electrode frames, a plurality of electrode frames and a plurality of electrode frames, wherein the electrolysis box body is hollow and is respectively provided with a water inlet and a water outlet along two transverse opposite side surfaces; the partition plates are used for dividing the internal space of the electrolysis box body into a plurality of electrolytic tanks; and flow guide connecting holes for communicating the plurality of electrolytic tanks are formed in the partition plate. According to the three-dimensional electrode frame structure for treating sewage and wastewater through electrocatalytic oxidation degradation, through the structural design that the internal space of the electrolysis box body is divided into a plurality of electrolytic tanks by the partition plates and flow guide connecting holes are formed, the number of the electrolytic tanks can be increased or decreased according to needs so as to adapt to sewage and wastewater treatment of different scales and treatment requirements. Due to the flexibility, the system can be applied to various different sewage treatment scenes, and each electrolytic tank can independently perform electrochemical reaction, so that the efficiency of electrocatalytic oxidation reaction is improved, and the treatment capacity of the whole system is improved.

The invention discloses a constructed wetland microbial fuel cell coupling device based on a novel three-dimensional electrode, and belongs to the technical field of sewage treatment, the device comprises a shell, and a bottom layer, an anode layer, a middle layer and a cathode layer are sequentially arranged in the shell from bottom to top. Wherein the bottom layer is filled with coarse gravels, and the middle layer is filled with fine gravels; the anode layer consists of a plurality of titanium tubes which are horizontally arranged and a titanium mesh for connecting the titanium tubes in parallel; openings are formed in the two ends of the titanium tube, through holes are formed in the titanium tube in an array mode, and the titanium tube is filled with a graphite felt core formed in a curled mode. The graphite felt core body can be used for a conductive material strengthening process and can also be used as a supporting material, and compared with an anode cage structure formed by a stainless steel net, the bearing strength is higher; the resistance of the metallic titanium is lower than that of the stainless steel mesh, so that electron transmission and improvement of electron transfer efficiency are facilitated, and the energy recovery efficiency and pollutant removal efficiency of the constructed wetland microbial fuel cell coupling device can be effectively improved.

The invention belongs to the technical field of electrochemical engineering, and relates to a three-dimensional electrochemical reactor which comprises a reactor shell assembly, three-dimensional electrode modules, counter electrode modules, diaphragms or polymer partition plates and an external power supply, the counter electrode modules are arranged in pairs, and the three-dimensional electrode modules are clamped between the counter electrode modules arranged in pairs; the diaphragm or the polymer partition plate is clamped between the electrode surface of the counter electrode module and the electrode surface of the three-dimensional electrode module, and the three-dimensional electrode module, the counter electrode module and the diaphragm or the polymer partition plate are arranged in an inner cavity of the reactor shell assembly; according to the invention, the fluid can flow through the interior and surface of the three-dimensional electrode, and a main electrochemical reaction field is transferred to the interior and surface of the three-dimensional electrode, so that the sufficient flow and mixing of the fluid between the electrodes are ensured while the electrode spacing is shortened as far as possible, the solution resistance is reduced, the cell voltage is reduced, and the current efficiency is improved; and energy consumption increase and equipment damage caused by overhigh voltage are avoided.

The utility model relates to the technical field of wastewater treatment, and discloses a novel three-dimensional electrode structure for electrocatalytic treatment of water-polluted wastewater, including: a plurality of anode groups and cathode groups arranged alternately and spaced apart; a frame group, which can be detachably loaded with anode groups and cathode groups; a power supply, wherein the positive and negative electrodes are electrically connected to the anode groups and cathode groups, respectively. The novel three-dimensional electrode structure for electrocatalytic treatment of water-polluted wastewater, the anode groups and cathode groups arranged alternately and spaced apart can produce a more uniform electric field distribution, which helps to improve the current efficiency between electrodes, thereby accelerating the degradation rate of pollutants, and can increase the electrode surface area in conjunction with the particle electrode structure, provide more active sites, help improve the mass transfer process of electrolytes and pollutants on the electrode surface, reduce the thickness of the diffusion layer, and improve the removal efficiency and rate of COD under the double-layer action based on the uniform electric field distribution and optimized mass transfer process, and help reduce energy consumption and reduce operating costs.

The present invention relates to the technical field of electrochemistry, and in particular, to a structured electrode, a preparation method therefor and a use thereof. The structured electrode of the present invention comprises an electrode body, and a surface of the electrode body is provided with an etched structure; and the electrode body is of an array structure composed of three-dimensional electrode wires. According to the structured electrode of the present invention, the electrode body is prepared by means of etching and 3D printing, and structure re-modification is performed, so that a larger specific surface area of the electrode is obtained; and an electrolyte storage region of a larger volume is constructed, so that the electrolyte can better wet the surface of the electrode, a transport path for alkali metal ions / electrons is shortened to a certain extent, and the conductivity of the electrode is improved, thereby helping to improve the charge-discharge specific capacity and the rate capability of an alkali metal secondary battery.

The invention relates to a method for manufacturing a face-down bonding interconnection three-dimensional electrode of an infrared focal plane array detector, which comprises the following steps of: (1) spin-coating photoresist on an infrared detector chip, exposing by using a mask plate, and developing to form a three-dimensional glue hole; (2) plating a composite metal film on the surface of the chip; (3) spin-coating a protective photoresist, performing ultraviolet light weak flooding exposure on the chip, developing to remove a thin layer of photoresist on the surface of the protective photoresist, and exposing the top composite metal film; (4) etching to remove the top composite metal film; and (5) removing photoresist by using an organic solvent to obtain the three-dimensional electrode. The method is good in process compatibility, the manufactured three-dimensional electrode is good in consistency, and the method is suitable for large-area production.

The invention discloses a reusable blood coagulation detection device based on a droplet microfluidic technology and a use method, and belongs to the technical field of droplet microfluidics, and the device comprises a microfluidic chip, an injection pump and an optical detection device. The micro-fluidic chip is used for generating and capturing blood droplets and comprises a PDMS layer, a three-dimensional electrode and a glass substrate, the PDMS layer and the glass substrate are bonded, and the three-dimensional electrode is poured in a second flow channel of the PDMS layer. The injection pump is used for controlling constant flow and is connected with an inlet of the PDMS layer. The optical detection device is used for detecting the blood coagulation process in the micro-fluidic chip and comprises a light source, a first lens, a second lens and a photoelectric sensor. The liquid drops in the micro-fluidic chip are controlled by applying an external electric field, the blood liquid drops are captured and released, the blood coagulation process is monitored by adopting an optical method, and a new thought is provided for blood coagulation function detection. The chip is prevented from being blocked when blood is coagulated mainly in a mode of wrapping the blood by an oil phase, and possibility is provided for flushing and reusing the chip.

The invention discloses a resourceful treatment process for phenol-ammonia wastewater. The process comprises the following steps: pretreating to remove oil, acid and ammonia, and recovering ammonia water; preparing a silicon-based supported phenol oxidase catalyst; carrying out enzyme catalysis polycondensation on the pretreated wastewater to generate polyphenols; residual phenol is deeply removed through electrochemical feeding of the three-dimensional electrode; after polyphenol substances are separated, supernate is subjected to biochemical treatment and is discharged after reaching the standard; and finally, carrying out dehydration, granulation, segmented pyrolysis graphitization and post-treatment on the collected polyphenol sludge to prepare the carbon negative electrode material. According to the method, deep purification of the phenol-ammonia wastewater and collaborative recycling of pollutants are achieved, toxic phenols are converted into carbon material precursors with high additional value, the recycled ammonia water can be used for desulfurization and denitrification of a boiler, and the method has the advantages of being thorough in treatment, high in resource recovery rate, low in cost and remarkable in environmental benefit.

The invention discloses a CSTR-based three-dimensional electrode MEC-fluidized bed reactor for anaerobic fermentation of cow dung and application, and belongs to the technical field of microbial electrochemistry. The reactor comprises a reactor main body, a feed port, a discharge port, a gas outlet and a stirring device, an anode and a cathode are arranged in the reactor main body, a conductive three-dimensional particle electrode filler is filled between the anode and the cathode to form a three-dimensional electrode system, and the anode and the cathode are connected with an external power supply. The three-dimensional electrode system is constructed, so that the reaction specific surface area and the electron transfer efficiency are greatly increased, the stimulation effect of a low-voltage electric field is amplified to the whole reaction space, and the technical bottlenecks of low mass transfer efficiency, low methane yield, easiness in system instability and the like in the traditional cow dung anaerobic digestion are solved. Compared with the traditional anaerobic digestion and two-dimensional microbial electrolysis cell, the two-dimensional microbial electrolysis cell disclosed by the invention can obviously improve the methane yield and the system operation stability, and has an excellent engineering application prospect.

The invention discloses a biochar-based three-dimensional porous electrode material, an electrode preparation method and an electrode application. The method comprises the following steps: pre-treating straw biomass by fully immersing the material in an NH3·H2O solution after crushing the material, preparing straw native biochar by anaerobic pyrolysis, and respectively alkali impregnating, high-temperature activating, acid washing and water washing the product to obtain the biochar-based three-dimensional porous electrode material; mixing the biochar-based electrode material, carboxymethyl chitosan and a solvent in proportion, heating and stirring the mixture to a viscous state, and obtaining a cross-linked layer 1 of the biochar-based porous three-dimensional electrode; mixing the biochar-based electrode material, an acrylic resin emulsion and a solvent in proportion, heating and stirring the mixture to a viscous state, and obtaining a cross-linked layer 2 of the biochar-based porous three-dimensional electrode; rolling the cross-linked layer 1 and the cross-linked layer 2 onto the upper and lower surfaces of a metal mesh respectively and drying the mixture to obtain the biochar-based porous three-dimensional electrode. When the electrode is applied to high-organic-load anaerobic digestion, the electrode can significantly stabilize the pH value of the anaerobic digestion liquid caused by the high-load impact.

The invention discloses a preparation method and application of a Fe-Ni-C ternary three-dimensional electrode, the preparation method comprises the following steps: firstly, treating a landfill leachate membrane concentrated solution through a three-dimensional electro-Fenton technology, introducing a Fe-Ni-C ternary electrode to construct a three-dimensional electro-Fenton system, and removing refractory organic pollutants in the concentrated solution by anodic oxidation and in-situ Fenton reaction to obtain the Fe-Ni-C ternary three-dimensional electrode. Then, the electrochemical reduction technology is used for treating three-dimensional electro-Fenton effluent, a cathode is used for reducing nitrogen pollutants mainly containing NO3 <->-N, the landfill leachate membrane concentrated solution is treated through the two-stage combined treatment process of three-dimensional electro-Fenton combined electrochemical reduction, and finally efficient treatment of organic matter and nitrogen pollutants in the membrane concentrated solution is achieved.

The three-dimensional electrodynamic force chromium-contaminated soil remediation system based on solar energy storage comprises a remediation area built in situ along chromium-contaminated soil, and an anode electrolysis chamber and a cathode electrolysis chamber are arranged at the two ends of the remediation area correspondingly. Separation plates with holes are arranged between the repairing area and the anode electrolysis chamber and between the repairing area and the cathode electrolysis chamber, graphite felt electrodes are arranged in the anode electrolysis chamber and the cathode electrolysis chamber and connected with a direct-current power supply, and the direct-current power supply is further connected with a solar photovoltaic panel; wherein the remediation area comprises a plurality of soil chambers which are arranged in sequence, and a three-dimensional electrode is arranged in each soil chamber. According to the in-situ remediation device, in-situ remediation operation of the chromium-contaminated soil can be continuously carried out for a long time, meanwhile, the three-dimensional electrode introduced into the soil chamber not only improves the conductivity, but also can effectively weaken the focusing phenomenon, the remediation efficiency is guaranteed, the manual labor requirement for remediation of the chromium-contaminated soil is reduced, and development of soil remediation is facilitated.

The invention relates to the technical field of wastewater treatment, and discloses preparation and application of a MnFeOx / CSA three-dimensional particle electrode for antibiotic wastewater treatment.The preparation method comprises the steps that a metal organic framework (Mn-MOF) and sodium alginate are mixed according to the mass ratio of 1.0: 3.2 to prepare homogeneous gel; dropwise adding the gel into a ferrous sulfate solution with the concentration of 0.10 to 0.40 g.L <-1 >, and carrying out cross-linking to obtain hydrogel microspheres; and carrying out vacuum freeze drying and carbonization treatment at 750-850 DEG C in a nitrogen atmosphere to obtain the MnFeOx / CSA three-dimensional particle electrode. The electrode is used as a particle electrode to construct a three-dimensional electrode system, and the antibiotic-containing wastewater is subjected to electrochemical degradation in the presence of an external electric field and persulfate. According to the invention, through an in-situ loading strategy, catalyst agglomeration is effectively inhibited; and the constructed three-dimensional electrode system obviously improves the mass transfer efficiency and the degradation capability on antibiotics.

The present application belongs to the technical field of wastewater treatment, and discloses a coal gasification slag-based composite particle electrode, a preparation method thereof, and a solar-driven photoelectric synergistic three-dimensional electrode reactor device. The coal gasification slag-based composite particle electrode is obtained by loading nickel oxide and copper oxide active components on coal gasification fine slag as a carrier after activation treatment. The three-dimensional electrode reactor containing the composite particle electrode comprises a reactor shell, an anode plate, a cathode plate, a particle electrode layer, an aeration system, a solar light condensing device, a solar energy supply system, and a power supply, and preferably further comprises a circulating system. The specific surface area and active sites of the carrier are increased through activation treatment, and the synergistic catalysis of nickel oxide and copper oxide is utilized to achieve simultaneous and efficient removal of ammonia nitrogen and humic acid in landfill leachate. The present application utilizes coal gasification solid waste resources in the field of water treatment, and has simple preparation method, stable particle electrode performance, and high treatment efficiency.

The invention relates to the technical field of sewage treatment, and discloses a sewage treatment system and method for photocatalytic coupling biological treatment.The sewage treatment system for photocatalytic coupling biological treatment.The sewage treatment system for photocatalytic coupling biological treatment.The sewage treatment system for photocatalytic coupling biological treatmentcomprises a pretreatment unit, a photocatalytic unit, an electrochemical biological unit, a post-treatment unit and an intelligent control unit, the pretreatment unit comprises a microwave-ozone coupling reactor and a magnetic adsorption column; the photocatalysis unit comprises a dual-band reaction tower; the electrochemical biological unit comprises a three-dimensional electrode biological membrane assembly and a FeS2 filler layer, the anode of the three-dimensional electrode biological membrane assembly is boron-doped diamond, and the cathode of the three-dimensional electrode biological membrane assembly is a carbon felt of anaerobic ammonium oxidation bacteria. Through multi-stage cooperative treatment, heavy metal ions and organic matters in the sewage are effectively removed, the removal rate of the heavy metal Cr (VI) is greater than 99.9%, the removal rate of the refractory organic matter benzene is greater than 99.9%, and the method has multi-scene applicability and efficient treatment capacity.

A system for designing a three-dimensional electrode structure according to one embodiment of the present application can include a structure forming section configured to form a CBD structure using first design parameters input for a conductive material and a binder (CBD) structure, and to form an electrode structure using second design parameters input for the electrode structure; a calculation section configured to calculate an effective conductivity of the CBD structure using an inherent conductivity of the conductive material and an inherent conductivity of the binder, to calculate an effective conductivity of the electrode structure using an inherent conductivity of an active material, an inherent conductivity of a CBD particle, and an inherent conductivity of a current collector, and to calculate a calculated resistivity of the electrode structure by converting the effective conductivity of the electrode structure into an inverse; a correction section configured to calculate a deviation by comparing a calculated specific resistance with a target resistance, and to correct a variable or a shape of the electrode structure to minimize the deviation; and an inverse section configured to calculate the inherent conductivity of the active material, the inherent conductivity of the CBD particle, the inherent conductivity of the current collector, and third design parameters, all of which are included in the corrected electrode structure.

The invention provides a method for treating nitrate wastewater through a three-dimensional electrode biological membrane, and belongs to the technical field of nitrate wastewater treatment. The method comprises the following steps: constructing a cylindrical three-dimensional electrode method bio-membrane reactor by taking activated carbon as a substrate, taking a cylindrical shape enclosed by a plurality of graphite rods as a cathode and taking a middle graphite rod as an anode; the reactor cathode generates H2 under the action of impressed current, autotrophic hydrogen type denitrifying bacteria grow and breed depending on H2 and are attached to the surface of a cathode graphite rod to form a biological membrane, nitrate nitrogen in water can be diffused into the biological membrane, and the biological membrane on the surface of the cathode graphite rod utilizes the generated H2 to reduce the nitrate nitrogen; cO2 is generated at the anode of the reactor and is further converted into carbonic acid, bicarbonate radicals and carbonate radicals, and a carbon source required by growth and reproduction is provided for the autotrophic hydrogen type denitrifying bacteria. According to the three-dimensional electrode bio-membrane reactor, a filling material is added in a two-dimensional reactor structure to serve as a supplementary electrode, and stronger wastewater treatment capacity is brought by a larger surface area.

An electrochemical cell includes a casing that: includes a lower first element in the form of a vessel, the internal surface of which is at least partially covered by a layer of conductive material so as to form the current collector of the first electrode with a first polarity; includes an upper second element in the form of a cover for closing the vessel; houses a three-dimensional electrode structure with a first electric polarity; houses a three-dimensional electrode structure with a second electric polarity opposite to the first electric polarity; and contains an electrolyte as an ionic conductive medium. The three-dimensional electrode structure with the second electric polarity includes a series of electrodes with a second polarity, each of which is an elongated body with a vertical orientation.

This invention relates to a wastewater treatment system, comprising a pretreatment device, a three-dimensional electrode catalytic oxidation device, a strong oxidation device, and a separation device. The three-dimensional electrode catalytic oxidation device is connected to the pretreatment device. The three-dimensional electrode catalytic oxidation device includes a housing, an anode electrode plate, a cathode electrode plate, a particle electrode assembly, and a light source assembly. The anode and cathode electrode plates are disposed within the housing, and the particle electrode assembly is disposed between the anode and cathode electrode plates. A accommodating space is provided between the anode, cathode, and particle electrode assembly. The light source assembly is disposed within the accommodating space. The surfaces of the cathode electrode plate and the particle electrode assembly are coated with a photocatalytic coating containing a photocatalyst. The strong oxidation device is connected to the three-dimensional electrode catalytic oxidation device, and the separation device is connected to the strong oxidation device. This invention is highly adaptable and can be applied to the treatment of various types of pollutants.

The application relates to the technical field of semiconductors, and provides a preparation method of a three-dimensional electrode, which comprises the following steps: manufacturing a wafer mask plate, wherein the wafer mask plate is provided with a plurality of first hollow patterns, the shape of each first hollow pattern is matched with the cross-sectional shape of the electrode, and the position of each first hollow pattern is the same as the target position of the electrode on a film-to-be-coated wafer; temporarily bonding the wafer mask plate with the surface of the film-to-be-coated wafer; and evaporating the electrode at the position opposite to the first hollow pattern on the film-to-be-coated wafer. The preparation method of the three-dimensional electrode provided by the application realizes the submicron-level accurate layout of the electrode on the film-to-be-coated wafer by manufacturing the wafer mask plate and temporarily bonding the wafer mask plate with the surface of the film-to-be-coated wafer, so that there is no gap between the wafer mask plate and the film-to-be-coated wafer and the wafer mask plate cannot move relative to the film-to-be-coated wafer, the gap between the evaporated electrode position and the target position is reduced, and the accuracy of preparing the three-dimensional electrode on the film-to-be-coated wafer is improved.

High-throughput microfluidic devices comprising one or more fluidic microchannels each with at least one flow-through 3D structure comprising a 3D electrode, or alternatively a 3D permselective structure, and optional secondary bead bed(s) are disclosed. Such devices can be used for counter-flow focusing of charged species via ion concentration polarization and in situ quantification of electrokinetically enriched charged species from an ionically conductive solution by both optical and electrical detection.

The present invention discloses a method for preparing a diamond-based high-activity three-dimensional particle electrode material, a three-dimensional electrode reactor and its application. The method for preparing the electrode material comprises the following steps: purifying the diamond; uniformly mixing the purified diamond with titanium dioxide, silicon carbide and a catalyst, and then pressing and forming; calcining the pressed sample at high temperature to obtain the diamond-based high-activity three-dimensional particle electrode material. The present invention uses a mixture of diamond micropowder, silicon carbide and titanium dioxide as the main raw materials. By adding a suitable catalyst, the silicon carbide and titanium dioxide components melt under high temperature conditions, which not only improves the activity of the electrode material, but also increases the mechanical strength of the electrode material. The process flow of the present invention is simple and easy to operate. The obtained electrode material has good conductivity and strong stability. Filling the material into a three-dimensional electrode reactor can effectively reduce the COD value in organic wastewater.

This invention proposes a three-dimensional electrode electrochemical device with descaling function. It is divided into a softening chamber and an oxidation chamber by a partition. The softening chamber contains multiple cylindrical electrode groups. Under the action of an external electric field, the cathode reaction generates a strongly alkaline environment to precipitate scale-forming ions in the water. A gas flushing mechanism and an external programmable DC regulated power supply effectively achieve automatic descaling. The three-dimensional electrode group in the oxidation chamber consists of several anode plates and cathode plates arranged alternately at equal intervals. Insulating baskets filled with particle packing are placed between adjacent electrode plates. Ultrasonic vibrating plates are integrated around the three-dimensional electrode group. A porous sieve plate and aeration pipeline are installed at the bottom of the three-dimensional electrode group. A spray mechanism with rotating nozzles is installed at the top of the oxidation chamber. The combination of the three-dimensional electrode group, ultrasonic assistance, and circulating spray enhances the oxidation efficiency. This invention removes multiple pollutants from water simultaneously and efficiently in a single reactor without the need for external reagents, through a series of electrochemical reactions. It has the advantages of high treatment efficiency, high automation, and small footprint.

The invention discloses a three-dimensional electrokinetic remediation device and application thereof. The device is of a box type structure; the electrokinetic remediation electrolytic tanks are arranged at the two ends of the device, and electrodes and an electrolyte solution are arranged in the electrokinetic remediation electrolytic tanks; the cathode, the anode and the auxiliary electrolyte cavity are arranged between the electrokinetic remediation electrolytic tanks, and the soil column pipe and the auxiliary electrolyte cavity are MnFe2O4 coated GBC; the solute in the electrolyte solution is chitosan salt, Tween X-100 and hydrogen peroxide. The problems that existing biochar only serves as a passive cathode and lacks catalytic sites, and a two-dimensional electrode structure is uneven in electric field distribution and difficult to recycle are solved, MnFe2O4-coated GBC serves as an auxiliary electrode, a three-dimensional electrode structure is constructed, and a customized composite electrolyte is combined, so that the migration ability of pollutants is enhanced, and the service life of the pollutants is prolonged. Fenton-like degradation of organic chlorine pollutants can be promoted, and the remediation efficiency and the treatment uniformity are remarkably improved.

The invention discloses a method for enhancing removal of high-concentration antibiotics by a three-dimensional electrode coupled sulfur-mediated biological system. The three-dimensional electrode structure is composed of a two-dimensional electrode and pig manure biochar, when the three-dimensional electrode structure is combined with a sulfur-mediated sewage biological treatment system for use, enrichment of functional microorganisms can be promoted, electron transfer and synergistic metabolism among the functional microorganisms can be improved, efficient synergistic removal of COD-sulfate-ammonia nitrogen-sulfamethoxazole can be promoted, and the effect of removing the COD-sulfate-ammonia nitrogen-sulfamethoxazole can be achieved. And a new technology is provided for treatment of wastewater containing carbon, nitrogen, sulfur and antibiotics. Especially in deep treatment of high-concentration antibiotics and pharmaceutical wastewater, the coupling technology can realize efficient removal of pollutants and long-term stable operation of the system, and a technical path with innovativeness and application potential is provided for treatment of complex refractory wastewater.