807results about How to "Improve electrolysis efficiency" patented technology

The invention discloses a method for recovering rare earth elements from neodymium-iron-boron wastes, which comprises the steps of: mixing the neodymium-iron-boron wastes with water and then grinding; oxidizing the ground neodymium-iron-boron wastes; carrying out the secondary grinding for oxidation products; leaching by adding acid; separating solid from liquid; extracting to remove iron; chloridizing rare earth; separating the rare earth by extraction; extracting to remove aluminum; sedimenting; and firing. The method applied to recovery of the rare earth has the beneficial effects that the rare earth recovery rate is increased by 5-8%; the use value of the recovered rare earth is improved so that the production cost of further processing is reduced; the problem of puree fused salt in the electrolysis of single rare earth is solved, and the electrolytic efficiency of the rare earth metal during electrolysis is improved and energy consumption is effectively reduced; and the contents of non rare earth metals, such as C, S, O and the like are reduced.

The invention relates to a method for preparing vanadium battery solution or adjusting the capacity, wherein an adopted electrolysis unit comprises an electrolytic cell group, an anode electrolyte storage tank, a cathode electrolyte storage tank, a liquid conveying pipeline and a pump, a mode of forced convection is adopted so that the anode electrolyte and the cathode electrolyte stored in the anode electrolyte storage tank and the cathode electrolyte storage tank respectively flow through the anode and the cathode of the electrolytic cell group respectively, a voltage is applied between the anode and the cathode of the electrolytic cell group to generate direct current capable of generating oxygen and deoxidizing a vanadium compound, and after finishing electrochemical oxidation and reduction reaction, the anode electrolyte and the cathode electrolyte flowing through the anode and the cathode of the electrolytic cell group return to the anode electrolyte storage tank and the cathode electrolyte storage tank. The electrolysis method is applied to preparing electrolyte for a full vanadium liquid stream battery and restoring the capacity of the full vanadium liquid stream battery off line or on line.

The invention discloses a proton exchange membrane water electrolyte battery membrane electrode and a process for preparation thereof, which belongs to the technical field of preparing hydrogen gas through electrolyzing water, wherein the proton exchange membrane water electrolyte battery membrane electrode comprises a polymer electrolyte membrane, an anode catalyst layer, a cathode catalyst layer, an anode diffusion layer, a cathode diffusion layer, a support layer and a flow field plate, wherein hydrophilic thin layer structures which are formed by catalyst are respectively brushed on both surfaces of the polymer electrolyte membrane. Anode catalyst is noble metal or metallic material, and the diffusion layer is carbon material or metallic material. A catalyst layer and the relative diffusion layer and the support layer are compacted in a titanium plate to prepare membrane electrode through utilizing external force under normal temperature. The invention lowers the load of catalyst, improves the operating factor of catalyst, avoids the deformation of membranes in the process of heat pressing, and is drawn supported from the catalytic and corrosion resistance property of an anti-corrosion diffusion layer with catalytic property, and the electrolytic property and the stability of a battery are improved. The invention has the advantages of simple technique, convenient operation and excellent repeatability.

The invention discloses an auxiliary combustion system of a vehicle-mounted hydrogen and oxygen generator. The auxiliary combustion system comprises a hydrogen and oxygen mixed gas generator, a pulse power supply control board, a water storage tank and a pulse power supply; the hydrogen and oxygen mixed gas generator is an airtight metal container, plugged with a positive metal electrode and a negative metal electrode, filled with electrolyte and connected with a gas inlet of an engine through a gas guide tube; the water storage tank is connected with the hydrogen and oxygen mixed gas generator; the pulse power supply control board is respectively connected with the metal electrodes and the pulse power supply; the pulse power supply generates controllable alternating current through the pulse power supply control board, and the alternating current is added onto the electrodes in the hydrogen and oxygen mixed gas generator; and hydrogen and oxygen which are separated out by electrolyzing are together injected into the engine for assisting combustion. In the invention, the alternating current pulse power supply is adopted as an electrolysis power supply, thus the electrolysis efficiency is effectively improved; and closed-loop control is formed by adopting pressure, temperature and oxygen sensors so as to improve the efficiency of the engine, reduce the power consumption and reduce the discharge value.

Disclosed is a Brown gas mass production apparatus having a line style electrolytic cell in which an electrolytic cell case having an electrolyte distribution and discharging pipe mounted on the inside bottom surface thereof is coated with insulation material on the inner surface thereof, electrode units are disposed by two or three groups in a side-by-side arrangement in the electrolytic cell case, an electrolytic cell upper plate having gas outlet nipples mounted thereon is sealingly coupled to the top surface of the cell case to form a secured sealing between edges of the upper plate and the cell case. The line style electrolytic cell further includes an auxiliary electrolyte tank connected to the electrolytic cell case for maintaining the surface of the electrolyte at a predetermined level just above the top surface of the electrode units in the electrolytic cell according to the operation of a solenoid valve, so that water is automatically fed into the electrolytic cell according to the opening and closing operation of a solenoid valve operated by a level sensor installed in the auxiliary electrolyte tank, and a relatively large horizontal space is formed just above the top surface of the electrode units, so that gas and water are separated directly at the horizontal space.

The invention belongs to recovery treatment on lead plaster of a waste lead-acid storage battery. The method comprises the following steps of: mixing the lead plaster of the waste lead-acid storage battery with waste sulfuric acid in the waste lead-acid storage battery according to the design requirement and roasting; adding roasting sand in a stirring kettle; adding tap water to a water level line of the device and stirring the roasting sand; adding a proper amount of calcium acetate, acetic acid and nitric acid; starting a solution circulating system pump, leaching out the roasting sand and maintaining the concentration of lead acetate to be saturated; adding a proper amount of bone glue and beta-naphthol, electrolyzing immersion liquid, recovering the metallic lead at the cathode and recovering lead dioxide at the anode; press filtering residues to obtain lead-off slag and filtrate; and adding calcium carbonate in the filtrate and recycling. The device mainly comprises a leaching part, a press filtration part, a circulating part and an electrolysis part, and concretely includes eight key components of the stirring kettle, a press filter, an overflow port, an electrolysis direct current power supply, an electrolytic cell, a cathode titanium basket, a corrosion resistant pump and a heating element.

The invention relates to a metallurgy method of metal sulfide M1S; in the method, ionic liquid M2X is taken as electrolyte, metal sulfide is taken as a solid-state cathode, or the powder of metal sulfide added with electronic conduction matters or lumps and metal current collectors are compounded for being used as the solid-state cathode, graphite or inertia anode is taken as an anode, the electrolyte is carried out in inert atmosphere or air, the electrolyte temperature is controlled at 120-780 DEG C, the electrolyte time is controlled to lead the electrolysis electric quantity to reach theory needed theory electric quantity and above, the metal sulfide is decomposed into metal products and simple substance S by electrochemistry. The method has simple process, low energy consumption, high additional value of the product, wherein the prepared metal materials such as tantalum powder, tantalum, porous iron and other nanometer metal powder materials or superfine metal powder materials or porous metal materials can be directly used as hydrogen storage materials, battery materials, capacitor materials and the like or as the raw material for powder metallurgy and the like.

A diamond electrode includes a conductive silicon substrate having a plurality of pores. The diamond electrode also includes a conductive diamond covering the conductive silicon substrate. The inner wall surfaces of the plurality of pores are at an angle of 60° to 85° with respect to a substrate of the conductive silicon substrate.

The invention provides a solar optothermal coupled high-temperature water electrolysis hydrogen production system. The system comprises a heat energy supply module, a hydrogen production and separation module and a storage module which are sequentially connected; the heat energy supply module comprises a condensation device, a heat collection device, a heat storage high-temperature heat pipe heat exchanger and a heat exchanger unit which are sequentially connected, and hydrogen and hydrogen are separated through electrolysis after a water and hydrogen mixture in the hydrogen production and separation module is heated into a steam and hydrogen mixture above 800 DEG C. Compared with the prior art, the hydrogen production system has the advantages that fossil energy does not need to be consumed, the productive process is more green and environmentally friendly, and the power consumption is greatly reduced; a stable heat source is provided through the system, the problem that a photo-thermal system is not stable due to changes in the weather is solved, the availability of the system is improved, and meanwhile the electrolytic efficiency of the system is improved.

An ultra-pure water membrane electrolyser belongs to the technical field of electrolytic cell, comprising an anode clamping plate, an anode current collector, a membrane electrode, a sealing gasket, a cathode current collector and a cathode clamping plate; wherein, the electrolyser is characteristics in that: the anode clamping plate thereon is provided with a horizontal groove flow field, a sealing ring, a water inlet, a water outlet and a fastening bolt hole. The anode clamping plate not only locates and fastens the electrolytic cell, but also has the flow field function of channelizing water and oxygen flowage. The anode current collector transmits the electric energy of an external power to an anode catalytic layer on the surface of the membrane electrode to realise electrochemical oxidization of water, so as to generate oxygen and hydrogen ion. The cathode current collector transmits the electric energy of the external power to a cathode catalytic layer on the surface of the membrane electrode to reduction of hydrogen ion, so as to generate hydrogen. The cathode clamping plate thereon is also provided with a flow field, a sealing ring, a water outlet and a fastening bolt hole, and the components are assembled in sequence and then fastened by screw rods and nuts. The electrolyser has the advantages as follows: simple structure, high working efficiency and long service life.

The present invention belongs to the field of chemical preparing technology, and is especially direct electrochemical process of preparing ferrate. The preparation process prepares ferrate inside one diaphragm type cylindrical electrolytic bath with pure sodium hydroxide as electrolyte. While controlling electrolyte concentration, reaction temperature and applied voltage, high concentration sodium ferrate solution is first prepared, and potassium ferrate or barium ferrate is then prepared via adding potassium ion or barium ion. The present invention has simple technological process and low cost, and is suitable for large scale preparation of ferrate.

A method of producing in a bioreactor a biogas rich in methane involves electrolyzing water in an aqueous medium at a voltage in a range of from 1.8 V to 12 V in the presence of electrochemically active anaerobic microorganisms that biocatalyze production of hydrogen gas, and, contacting a species of hydrogenotrophic methanogenic microorganisms with the hydrogen gas and carbon dioxide to produce methane. Volumetric power consumption is in a range of from 0.03 Wh / LR to 0.3 Wh / LR. Current density is 0.01 A / cmE2 or lower. The voltage is sufficient to electrolyze water without destroying microbial growth. Such a method results in improved electrolysis efficiency while avoiding the use of noble metal catalysts. Further, a combination of water electrolysis with anaerobic degradation of organic matter results in increased biogas quality and in increased biogas quantity and yield. Oxidation of hydrogen sulfide contributes to the increased quality, while an increase in the rate of organic matter hydrolysis and an increase in the production of methane from hydrogen contributes to the increased quantity and yield.

Disclosed are an electrolysis vessel and an apparatus for generating electrolyzed water which are small in size, excellent in electrolysis efficiency, and enable to reduce the anion concentration in the acidic electrolyzed water. The electrolysis vessel comprises electrolysis chambers (10a, 10b) arranged opposite to each other with an ion-permeable separating membrane (2) interposed between, raw material water supply means (11a, 11b), electrodes (3a, 3b) so arranged as to have the separating membrane (2) between them, and electrolyzed water taking-out means (12a, 12b). The separating membrane (2) is an anion permeable membrane, and the electrodes (3a, 3b) are formed on respective sides of the anion permeable membrane (2) in an appressed manner, while leaving a portion of the anion permeable membrane (2) exposed. Only raw material water supplied to the cathode side electrolysis chamber (10b) contains an electrolyte. The electrodes (3a, 3b) are porous bodies and contain an electrode base composed of a powder titanium compound such as TiC or TiN, a catalyst such as platinum black or iridium black, and a binder such as PVA. The electrodes (3a, 3b) may have a mesh-like shape or a comb-like shape, and are formed by applying a conductive paste containing a conductive powder on respective sides of the anion permeable membrane (2) and heating or pressurizing the thus-applied paste.

The invention discloses a hydrogen-rich water electrolytic bath. The electrolytic bath is formed by an anode chamber and a cathode chamber which are formed inside an anode housing and a cathode housing which are fixed by screws; the anode chamber and the cathode chamber are separated by an ion exchange membrane; the anode chamber is connected with an anode water inlet and an anode water outlet which are formed on the anode housing; the cathode chamber is connected with a cathode water inlet and a cathode water outlet which are formed on the cathode housing; narrow flow passages for water to pass through are respectively formed inside the anode housing and the cathode housing; an anode electrode plate and a cathode electrode plate are respectively arranged inside the anode chamber and the cathode chamber; the cathode electrode plate is connected with a cathode interface formed on the cathode housing; the anode electrode plate is connected with an anode interface formed on the anode housing. The technical scheme disclosed by the invention can effectively improve concentration of dissolved hydrogen generated by electrolysis in water, and meanwhile, also improves water quality of the water.

Provided in the present invention are a rare earth metal and a rare earth metal alloy and a method for the preparation of these by molten salt electrolysis. In the method for the preparation of the rare earth metal alloy by molten salt electrolysis, the electrolyte is an alkali metal or the chloride-fused salt of an alkaline earth metal, the positive electrode is an inert electrode or graphite, the negative electrode is composed of a rare-earth metal oxide and the oxides of other alloy components and / or metal powders, and electrolysis is induced by the passage of a direct current. During the electrolytic process, the temperature of electrolysis is higher than the melting point of the rare earth metal alloy produced and lower than the melting point of the negative electrode; the surface layer of the positive electrode is in the first stage electrolyzed to a liquid metal film which accumulates to a certain volume before falling to the crucible at the bottom. The current density of the negative electrode is sufficient to separate out from said negative electrode the components of the rare earth metal alloy. The electrolysis voltage is lower than the decomposition potential of the electrolyte and higher than the decomposition potential of the oxides corresponding to each component of the rare earth metal alloy. A crucible is used to collect the rare earth metal and the alloy obtained through the present method. The present method is technically simple and environmentally-friendly, while featuring low energy consumption, high current efficiency, and low costs.

The invention relates to a multifunctional hydrogen-rich water kettle and a use method. The kettle comprises a base. The upper portion of the base is connected with a kettle body. A water storage bin, a filter element and strong magnets are arranged in the kettle body. A light-pervious area, an electrode ring, an LED lamp bulb and a control circuit are arranged at the bottom in the kettle body. An automatic kettle lid is arranged on the upper portion of the kettle body. An aluminum shell type PTC heater is arranged on the inner side wall of the kettle body. A handle is arranged beside the kettle body. A switch button of the kettle lid, an indicator lamp of the PTC heater and a buzzer are arranged on the handle. A touch switch of the control circuit and a power interface are arranged on the peripheral side of the base. In the use process, the switch button on the handle is pressed to open the kettle lid automatically, water is injected into the water storage bin till the water storage bin is full, and the water is filtered to the lower part through the filter element; a power source is plugged into the power interface, and the touch switch is pressed to start electrolytic hydrogen making; besides, a sound-light prompting device is arranged for display. According to the multifunctional hydrogen-rich water kettle, hydrogen-rich water is made through electrolysis on the basis of filtration and magnetization of the water, and the hydrogen-rich water can be heated when needed.

The invention relates to a multifunctional film-free electrolytic boiled water machine which is characterized by comprising a container, a heater, a controllable electrolytic power supply, an electrolytic tank and an electrolytic electrode assembly, wherein the contained is filled with raw water; the heater is capable of heating or boiling water; the electrolytic tank is provided with a water inlet and a water outlet; the electrolytic electrode assembly is arranged in the electrolytic tank, and the electrolytic electrode assembly adopts a film-free water electrolysis technology with higher efficiency; the raw water inside the container can be heated or boiled through the heater and then flows into the electrolytic electrode assembly from the water inlet of the electrolytic tank; the water is electrolyzed through a gap positioned between electrodes, which have different polarities, of the electrolytic electrode assembly; and the electrolyzed water flows out of the water outlet of the electrolytic tank. According to the multifunctional film-free electrolytic boiled water machine, the design scheme of the electrolytic electrode assembly combines the characteristics of three aspects that the spacing of the gap positioned between the electrodes with different polarities is reasonably minimized, the area of the electrode gap is reasonably maximized, the water has proper flowability in the electrode gap through a water electrolyzing process, and the like to increase the electrolytic probability and quantity of impurities and water molecules which are contained in the water, so that the water electrolysis efficiency is improved.

The invention discloses a small-size sanitizer generator and using method in the electrochemical appliance domain, which is characterized by the following: the whole displays column shape; the lateral surface of internal barrel (6) is ionic interchange film (8), which contains negative electrode (5) on the inner side and positive electrode (1) on the outer side; the open and close hole (4) is set on the top of internal barrel (6); the electrolytic solution import-and-export (7) is opened on the lower surface; the external barrel (2) displays longer diameter cylinder than internal barrel (6), whose top can match the internal barrel (6) to insert; the positive and negative electrode and ionic interchange film (8) constitute electrolytic device (3); when the electrolyte is injected in the external barrel (2), the electrolytic device (3) is connected to start electrolytic separation; the power is closed after the sanitizer satisfies the standard; the alkali liquid is discharged from the open and close hole (4) through lifting and moving the internal barrel (6), which forms the sanitizer in the external barrel (2) to finish the working flow path.

The invention provides an airflow-separated hydrogen-rich water cup and a work method thereof. The airflow-separated hydrogen-rich water cup comprises a cup body, a cover body connected with the top of the cup body in a detachable way, a base fixedly connected with the bottom of the cup body in a sealing way, and an electrolysis unit installed in the cup body, wherein a power supply module and a printed circuit board (PCB) are installed in the base; a control circuit is arranged on the PCB; a heating ring and a temperature sensor are arranged on the top of the base; the cover body comprises a water storage bin, a filter element arranged at the bottom of the water storage bin, and a bottle cap connected with the top of the water storage bin in a detachable way; an air escape valve is arranged on the top of the bottle cap; the electrolysis unit comprises an electrode holder connected with the bottom of the base, a gas-collecting hood installed on the top of the electrode holder, and a negative plate, a first isolation plate, an ionic membrane, a second isolation plate and an anode plate which are installed on the electrode holder from top to bottom; vent holes are formed in the electrode holder under the anode plate; the power supply module, the temperature sensor, the heating ring, the negative plate and the anode plate are respectively connected with the control circuit. The airflow-separated hydrogen-rich water cup not only solves the interference effect of oxygen bubbles on the rising process of hydrogen bubbles, but also increases the types of electrolysed water, and is convenient to use.

Disclosed is an apparatus for producing hydrogen water. The apparatus for producing hydrogen water according to one embodiment of the present invention, which is a device for producing hydrogen water by electrolysis of water, comprises: a container filled with water; first and second electrodes provided in the container; a power supply unit for supplying DC power to the first and second electrodes; a switching unit which turns the supply of the DC power on or off and alternates positive and negative polarities of the DC power; a sensing unit for measuring the impedance of the water; and a control unit which receives a detection signal with respect to the impedance of the water from the sensing unit and controls the electrolysis process of the water based on the detection signal.

The invention discloses a novel process for electrochemically recycling low-cobalt WC-Co hard alloy waste material. The method is characterized in that the WC-Co hard alloy waste material is electrochemically treated in a pulse current way in special electrolyte medium, i.e. the WC-Co hard alloy waste material is used as an anode, titanium or stainless steel is used as a cathode, the constitution of the electrolyte is systematically formulated according to the difference of the electrochemical behavior and complexing chemical behavior of WC and Co, the pulse current electrolysis way is developed, the difficulty for passivating the anode can be effectively solved, the entire process is simple, the electrolysis efficiency is high, and the metal recovery rate is high.

An electromechanical actuator comprising an inherently conducting polymer and a conductor for conducing voltage along the polymer from a first end region thereof. The conductor is adapted for axially extending and contracting with axial expansion and contraction of the polymer. In one form, the conductor is in the form of a helix embedded in the polymer and extends along substantially the entire length of the polymer. Also disclosed is a method for manufacture of the electromechanical actuator.

The invention discloses a new method for recycling gallium from a Bayer mother solution by using chelate resin. The method comprises the following steps of: (1) filling a gallium extracting resin into a resin column, and allowing a gallium-containing Bayer mother solution to flow through the resin by using an intermittent dynamic column passing method to reach adsorption saturation; (2) washing the saturated gallium extracting resin with water; (3) desorbing gallium adsorbed by the resin by using an acidic eluent, performing precipitation, impurity removal and other treatment on the eluant to obtain pure concentrated gallium-containing electrolyte, and electrolyzing to obtain the gallium; and (4) washing the eluted resin with water until the pH value of a liquid at the outlet of an exchange column is 6-8. The method has the advantages of simplicity and feasibility, high resin utilization rate, high gallium recovery rate, low energy consumption and cost, high grade of the obtained gallium product, and the like.

The invention relates to the field of magnesium chloride electrolysis and particularly discloses a device for generating metal magnesium by electrolyzing magnesium chloride. The device comprises a temperature control system, a liquid level control system and an electrolytic tank; a clapboard is arranged in the electrolytic tank to divide the upper part of the electrolytic tank into an electrolytic chamber and a magnesium collection chamber; a plurality of groups of carbon anodes and iron cathodes are installed in the electrolytic chamber; a plurality of bipolar electrodes are inserted between the anodes and the cathodes; a supporting plate is arranged at the lower part of the electrolytic chamber and is provided with an electrolyte circulation hole; a slag storage chamber is arranged below the supporting plate; and a sealing cover is arranged on the electrolytic chamber. The device of the invention has the beneficial effects that as the device for generating the metal magnesium by electrolyzing magnesium chloride does not need slag discharge operation, the labor intensity is greatly reduced, the working environment is improved, the oxidation loss of liquid magnesium and the generation quantity of magnesium oxide tank slag are reduced, and the productivity and the electrolysis efficiency of a single tank are improved.

The horizontal height-measuring system includes the following several portions: aluminium electrolytic overhead traveling crane, old anode and new anode. It is characterized by also including the portions of wireless comparison base platform which can be moved on the ground surface, background controller and foreground controller. Said invention also provides the concrete action of the above-mentioned every portion and working principle of said system. Said system adopts the optical measurement techniques of laser, etc., so that its measurement accuracy is high.

The invention relates to a method for preparing electrolytic manganese metal by using high-iron and high-phosphor manganese ores. The method comprises the following steps of: respectively carrying out ball-milling on high-iron and high-phosphor manganese ores and iron pyrites to form powders, mixing the powders in proportion and roasting in a self-manufactured roasting device, leaching the mixture subjected to sulfating roasting by taking water as a leaching agent to obtain a manganese sulfate solution, removing impurities from the manganese sulfate solution to obtain a manganese sulfate electrolyte, adding an electrolysis additive to the manganese sulfate electrolyte, simultaneously adding ammonium salt serving as a buffering agent to the solution, putting the electrolyte into an electrolytic cell, switching on direct current and maintaining constant temperature so that an electroextraction effect is generated to separate out the manganese metal on a cathode, purifying, washing, drying and peeling the separated manganese metal, thus obtaining the electrolytic manganese metal product. The method is short in technological process, hardly pollutes the environment and and is suitable for development and application of low-grade high-iron and high-phosphor manganese ores.

The invention relates to a preparation method of an ion membrane electrode for pure water electrolysis, belonging to the technical field of hydrogen production by water electrolysis. The preparation method comprises the following steps: separately preparing a cathode catalyst solution and an anode catalyst solution from a cathode catalyst, an anode catalyst, a Nafion solution, isopropyl alcohol, glycerol and distilled water; separately applying the cathode catalyst solution and the anode catalyst solution on two transfer-printing templates, and drying the templates at the temperature of 80-130 DEG C in vacuum; and fixing the two dried transfer-printing templates on both sides of an ion membrane, treating at the temperature of 130-190 DEG C and the pressure of 6 MPa for 2-5 minutes, cooling to room temperature while maintaining the pressure at 6 MPa, peeling off the transfer-printing templates, placing the templates in an oven and treating in vacuum at the temperature of 70-110 DEG C for 1 hour. By using the transfer-printing templates in the preparation method, under the premise of ensuring the combination firmness degree of the ion membrane and the catalyst layer, the direct damage to the ion membrane is reduced, thereby the service life of the membrane electrode is prolonged, the energy consumption is lowered, the electrolysis efficiency is improved, the preparation time is shortened and the production cost is reduced.

The invention discloses a device and a method for the cyclic regeneration and copper extraction of etching liquid. The device comprises a waste liquid storage tank, a transit cylinder, a diaphragm electrolytic cell, a regenerated liquid storage tank and a dissolved solution absorption cylinder, wherein the transit cylinder comprises a first cylinder body and a second cylinder body, and the diaphragm electrolytic cell is divided into an anode chamber and a cathode chamber by a diaphragm. The device and method disclosed by the invention have the beneficial effects that by setting the transit cylinder and arranging a forced circulation system between the transit cylinder and the cathode chamber, the electrolytic efficiency of the electrolytic cell is increased, and after copper in waste etching liquid is nondestructively separated, a high-purity copper plate is produced on a negative plate; waste etching liquid after being treated by an etching liquid regenerating cycle system is cyclically utilized, so that new etching liquid is not required to be bought in the process of etching a printed wiring board, thereby saving the production cost, for purchasing etching liquid, of a circuit board production enterprise; the pollution problem caused by waste etching liquid to the environment is solved, and produced gas can be discharged with standard level; and the maximization of economic benefits and environmental benefits is realized.

The invention relates to a chlorine dioxide generator adopting a high-efficiency electrolytic method. The chlorine dioxide generator mainly comprises a chlorine dioxide electrolytic module, a soluble salt system, an electrolytic salt quantitative adding system, an alkaline liquid circulating discharge system and a programmable logic controller (PLC) control system. The chlorine dioxide generator has the characteristics of compact and reasonable structure, high electrolytic efficiency, simple production, mounting and maintenance of equipment, intelligent control, flexibility, convenience, high safety performance and the like.