45 results about "Electrolytes sodium" patented technology

The invention relates to a marine polysaccharide multilayer composite packaging film with an antibacterial function and a preparation method thereof, belonging to the fields of high polymer materials and food package. The marine polysaccharide multiplayer composite packaging film is prepared by forming a three-layer polyelectrolyte composite film by utilizing the static function of polycation electrolyte chitosan and polyanion electrolyte sodium alginate, and adding natural germicide, i.e. clove oil, to a middle film layer. The preparation method of the packaging film is simple; and the obtained packaging film has favorable mechanical performance, is superior to a low-density polyethylene film, can meet common requirements of food package, has favorable antibacterial controlled-release performance, can effectively prolong the shelf life of foods and can be used for fresh-keeping packaging of various foods, such as meat, cut fruits and vegetables, and the like.

The invention discloses organic gel electrolyte, application, a sodium-based double-ion organic solid-state battery and a preparation method thereof and relates to the field of electrochemical energystorage devices. The organic gel electrolyte is prepared from electrolyte sodium salt, a non-aqueous solvent and an organic polymer. The sodium-based double-ion organic solid-state battery comprises anegative electrode, a positive electrode, a diaphragm and the organic gel electrolyte; the negative electrode can be sodium ion alloyed metal, a metal alloy or a metal compound; the positive electrode comprises a positive electrode current collector and a positive electrode material; an active substance of the positive electrode material is a laminar material which can be used for reversibly embedding and disembedding sodium salt anions. According to the organic gel electrolyte disclosed by the invention, the problems that organic electrolyte is easy to volatilize, combust and explode, a sodium ion solid-state battery cannot consider ion conducting performance and electrical conductivity at the same time, and the safety performance is not good at high temperature are alleviated. The organic gel electrolyte disclosed by the invention has very good ion conducting performance and electrical conductivity and an electrode piece powdering problem caused by the fact that volume expansion iscaused by alloying can be alleviated; the battery has good circulating stability and safety performance.

The invention discloses a carbon-coated metal sulfide electrode material, a preparation method and application thereof. The electrode material consists of hemisphere-like bilayer structure particles, the inner layer is a metal sulfide, and the outer layer is a carbon material. The hemisphere surface of the metal sulfide is coated by the carbon material, and the section is exposed. The general chemical formula of the metal sulfide is MSx, wherein M is one element from the fourth main group metal elements to the seventh main group metal elements, and x is greater than or equal to 1 and smaller than or equal to 3. The method includes the steps of: (1) covering a nanowire template with a metal sulfide precursor to form a uniformly and orderly dispersed nanoscale product; (2) covering the surface of the metal sulfide with a layer of uniform and dense carbon material film; and (3) removing the nanowire template so as to obtain the carbon-coated metal sulfide electrode material. The electrode material has stable structure and good cycle performance, and can acquire reversible capacity of more than 300mAh g<-1> in nonaqueous electrolyte sodium ion batteries.

The invention discloses a method for treating desulfurization wastewater by electrolysis. The method comprises the following steps of: (1) feeding the desulfurization wastewater into an open diaphragm-free electrolytic cell, electrifying direct current to a titanium-based coating electrode which is used as a positive electrode and a stainless steel plate which is used as a negative electrode, and electrolyzing and stirring the desulfurization wastewater; and (2) adding polyacrylamide into the water treated in step (1) for flocculation. According to the method, the desulfurization wastewater with a high chemical oxygen demand (COD) is treated by electrolysis; the desulfurization wastewater contains a great amount of chloride, the chloride ion concentration is generally 8000-20000mg / L, and electrolyte sodium chloride is not required during electrolysis; in the process of electrolysis, oxygen and chlorine are released on the positive electrode; and being new ecological, the released oxygen and chlorine have strong oxidation capacity, so that the organic matters in the wastewater can be decomposed as a result of intense oxidation.

The invention discloses an organic electrode material, which comprises an estolide part and a diamine part with electrochemical activity, wherein the estolide is one or several of pyromellitic dianhydride, naphthalenetetracarboxylic dianhydride or perylenetetracarboxylic dianhydride; the diamine is one or two of 2,6-diamino-anthraquinone, 1,4-diamino-2,3-dicyano anthraquinone; n(estolide):n(diamine) is 1 to (0.8 to 1.2). The invention also provides a preparation method of the organic electrode material. The invention also discloses a sodium ion battery with the organic electrode material. The organic electrode material provided by the invention has the advantages that the voltage of the material is improved; through increasing the electrochemical activity centers of the material, the volume of the material is increased; in addition, the preparation process of the material is simple; the sodium ion battery with the organic electrode material shows good electrochemical performance.

The invention discloses a non-aqueous organic electrolyte containing sodium bis(fluorosulfonyl)imide. The non-aqueous organic electrolyte comprises electrolyte salt and an organic solvent, wherein the electrolyte salt is sodium bis(fluorosulfonyl)imide. The invention also discloses a sodium ion battery. The improvement of the sodium ion battery provided by the invention is characterized in that the sodium bis(fluorosulfonyl)imide is used as the electrolyte salt. The prepared sodium ion battery has the advantages of low cost, long cycle life, high energy density and the like, can be widely applied in large-scale energy storage equipment needed for solar energy and wind power generation, as well as the fields of intelligent power grid peak shaving, distributed power stations, standby power supplies, communications base stations and the like, and is especially suitable for being used as large-scale energy storage equipment.

The invention provides a water-based printing ink cleaning compound and a preparation method thereof. The cleaning compound comprises the following raw materials by mass: 12 to 20% of surfactants, 1 to 5% of a builder, 0.5 to 2% of a solubilizer, 0.5 to 4% of redeposition resisting agent, 0.5 to 3% of an anticorrosive agent and 1 to 2% of a water softener, with the balance being water. According to the invention, a Tween series of nonionic surfactants are subjected to homologue complex formulation, so cleaning of printing ink scale is improved; a great amount of nonionic surfactants are cooperatively used with a small amount of nonionic surfactant, so surface tension of a solution is further reduced and cleaning efficiency is improved; moreover, addition of a neutral electrolyte sodium chloride enables surface activity of three surfactants to be improved simultaneously and cleaning capability of the whole system of the cleaning compound to be greatly improved.

A sodium ion battery comprises a cathode having a porous redox active metal-organic framework material. The battery can be an organic electrolyte sodium ion battery wherein the electrolyte comprises a sodium salt dissolved in an organic solvent or mixture of organic solvents. Alternatively, the battery can comprise an aqueous sodium ion battery wherein the electrolyte comprises a sodium salt dissolved in an aqueous solvent. Battery performance is especially related to electrolyte and binder selection.

The invention relates to a method for treating rolling emulsification wastewater through electrocoagulation, belonging to the field of wastewater treatment methods. The method for treating rolling emulsification wastewater through electrocoagulation comprises the following steps: filtering rolling emulsification wastewater, pumping into an electrolytic bath, adding electrolyte sodium chloride into the electrolytic bath, adjusting the pH value of the wastewater to be 5.5-6.5, electrifying the electrolytic bath, after the electrolysis reaction, standing to precipitate for 1 hour, subsequently wiping off suspension oil on the liquid level, and discharging the supernate, that is, the treated effluent. According to the method for treating rolling emulsification wastewater through electrocoagulation, an electrocoagulation method is adopted to treat the rolling emulsification wastewater, the demulsification effect is superior to that of a chemical flocculation method under optimal conditions, the COD removal rate of the wastewater is up to 99.5%, the turbidity removal rate is 99.6%, and the method has the advantages of easiness in operation, automation achievement and the like.

The invention discloses an electric flocculation water treatment technology for retarding pole plate passivation, and belongs to the technical field of water treatment. The technology comprises the following steps: adding electrolyte sodium chloride to wastewater one time before electrolysis of each batch of wastewater in an intermittent electric flocculation process, so that the mean mass concentration of the sodium chloride inside an electrolytic cell is 40-200mg / L; outputting an intermittent electric flocculation voltage by a constant-pressure control power supply; and setting the voltage of each pair of electrodes to be 3-10V, the distance between the pole plates to be 5-15mm and the electrolytic time to be 30-90 minutes by adopting a direct current power supply. The problem of electrode surface passivation is improved and removed by in-situ generation of an acid substance on the electrode surface. The electric flocculation water treatment technology is free of feeding acid and base, and free of dismantling the electrodes to clean, and has the advantages of being simple in structure, and convenient to operate.

The invention relates to a preparation method of a folic acid coupled gold nano-rod / polypyrrole / ferroferric oxide multifunctional composite nano diagnosis and treatment agent. The preparation method comprises the following steps: by adopting composite nanoparticles consisting of gold nano-rods, polypyrrole and ferroferric oxide as a substrate, modifying the surfaces of the composite nanoparticles by using polycationic electrolyte chitosan and polyanionic electrolyte sodium alginate respectively by virtue of a layer-by-layer self-assembly process to ensure that the surfaces of the nanoparticles contain amino groups, and then connecting with carboxy groups of folic acid. The prepared multifunctional composite nano diagnosis and treatment agent disclosed by the invention has the advantages of high photo-thermal conversion efficiency, good biocompatibility, active tumor targeting performance, strong cancer cell killing ability, significant imaging effect, a function of being controlled for a long time, and the like, and can be applied to treatment, pathological magnetic resonance imaging analysis and medical diagnosis of X-ray computer tomography and ultrasonic imaging of tumors or cancers of human bodies or other mammals.

The invention discloses a desulfurization waste water zero discharging system and a process for realizing in-house byproduct recycling treatment. The system comprises a flue gas desulfurization system, a desulfurization waste water zero discharging pretreatment system and a desulfurization waste water zero discharging advanced treatment system, wherein the flue gas desulfurization system comprises a desulfurization tower, a gypsum hydrocyclone, a vacuum belt dehydrator, a waste water hydrocyclone and a backflow water tank; the desulfurization waste water zero discharging pretreatment system comprises a raw water pit, a primary reaction tank, a primary clarifier, a secondary reaction tank, a secondary clarifier and a clean water tank which are sequentially connected; the desulfurization waste water zero discharging advanced treatment system comprises an ultrafilter, a pH adjustment tank, a nanofilter, a nanofiltration water tank, a reverse osmosis part, a concentrated water tank and a strong brine electrolyte sodium hypochlorite device which are sequentially connected. According to the system and the process provided by the invention, byproducts produced from the desulfurization waste water zero discharging system are separated according to different components, and the desulfurization waste water zero discharging system is combined with a power plant original water treatment system, so that the waste is turned into wealth, and the in-house byproduct recycling is realized.

The invention discloses a method for treating printing and dyeing wastewater with a rare earth cerium doped titanium-based manganese dioxide electrode. The electrode comprises a titanium base, an interlayer of tin / antimony oxide and a surface coating of rare earth cerium doped manganese dioxide. According to the treating method provided in the invention, the rare earth cerium doped titanium-basedmanganese dioxide electrode is used as the anode, and a titanium plate is used as the cathode; distance between plate electrodes is 2.5 to 7 cm; the electrolyte sodium chloride has a concentration of0.1 mol / L and a pH value of 8 to 10; current density is 30 mA / cm<2>; electrolysis lasts for 1 to 1.5 h. When simulated printing and dyeing wastewater is treated with the prepared rare earth cerium doped titanium-based manganese dioxide electrode, removal rate of chroma in the wastewater is more than 96% and removal rate of COD reaches 84% to 91%.

The invention discloses a sodium-ion battery electrolyte additive containing rubidium and / or caesium cations, and applications thereof, and also discloses applications of rubidium and / or caesium cations as sodium-ion battery electrolyte additives in the field of sodium-ion battery. The sodium-ion battery electrolyte additive contains rubidium and / or caesium cations at a molar concentration of 0.01 to 0.2mol / L, an electrolyte sodium salt at a molar concentration of 0.5 to 2mol / L, and an organic solvent. The sodium-ion battery electrolyte additive containing rubidium and / or caesium cations is applied in the field of sodium-ion battery, so that the stability of sodium-ion battery anode SEI membrane is increased further, impedance is reduced, polarization of sodium-ion battery is reduced, cycling stability of sodium-ion battery is increased, and service life of sodium-ion battery is prolonged.

The invention discloses a preparation method of nanometer fibrillated cellulose capable of being re-dispersed in water after drying, and belongs to the technical field of nanometer cellulose preparation. According to the present invention, nanometer fibrillated cellulose is physically modified with an anionic polymer electrolyte sodium carboxymethyl cellulose, and the obtained nanometer fibrillated cellulose and sodium carboxymethyl cellulose mixed solution is dried by an experimental fluidized bed granulator and a freeze drying machine to prepare powdery or microparticle-like nanometer fibrillated cellulose solid, wherein the nanometer fibrillated cellulose solid can be uniformly re-dispersed in an aqueous medium due to the weakening of the agglomeration caused by hydrogen bonding; and the preparation of the re-dispersible nanometer fibrillated cellulose provides convenience in storage, transportation and subsequent applications.

The invention discloses a recycling process of a sodium aluminate solution in an aluminum-air battery preparation process. The process comprises the following steps: firstly, adding adsorbent activated carbon to a 155g / l waste electrolyte sodium aluminate solution, filtering, purifying, and carrying out crystal seed precipitation, thus achieving separation of sandy aluminum hydroxide and purified mother liquid; controlling the reaction time of preparation of sandy aluminum hydroxide to be 2-8 hours, the decomposition temperature to be 50-80 DEG C, the causticity ratio to be 1.53, the seed ratio to be 0.35, the stirring speed to be 75-150rpm, and the agglomerative efficiency to be 90%-350%, so as to prepare sandy aluminum hydroxide; carrying out high-temperature transformation on sandy aluminum hydroxide which is decomposed by crystal seed precipitation at the calcination temperature of 1,000-1200 DEG C; and feeding to an electrolytic aluminum system. The purified mother liquid can be reused in a battery system as a fresh electrolyte after being supplied with a certain amount of alkaline electrolyte and a corrosion inhibitor, and thus recycling of the waste electrolyte sodium aluminate solution is achieved.

The invention discloses a device and a method for preparing high-purity chlorine dioxide by using a single electrolyte sodium chlorite electrolysis method. The device comprises a diaphragm type electrolytic cell, a gas pump set, an absorption tower, an exhaust gas absorption tower and a storage tank, wherein two diaphragms are arranged inside the diaphragm type electrolytic cell; the two diaphragms partition the electrolytic cell into three chambers with an anode chamber in the middle, and a first cathode chamber and a second cathode chamber on both sides; metal wire fillers are filled in theanode chamber and the cathode chambers to reduce the inter-electrode resistance between an anode and a cathode; a gas distribution plate is arranged at the bottom of the anode chamber, and ClO2 gas generated by the anode is discharged through the positive pressure by blasting air, and the product is removed in time to increase the reaction rate; the cathode chambers also blast air through the airdistribution plate, and hydrogen generated by the cathode is safely discharged after being diluted. By the exhaust gas absorption tower in the device, a small amount of chlorine dioxide can be effectively recovered and introduced into the anode chamber for recycling without discharge and without pollution gas exhaust.

The invention provides a novel secondary battery which comprises a negative electrode current collector layer, a negative electrode active material layer, an electrolyte solution, a positive electrodeactive material layer and a positive electrode current collector layer which are arranged in sequence, a diaphragm is arranged in the electrolyte solution, the electrolyte solution comprises an electrolyte, the electrolyte is an electrolyte sodium salt, the positive electrode active material layer comprises a positive electrode active material, and the positive electrode active material layer isa Na2M2(C2O4)3.2H2O material capable of allowing free intercalation and deintercalation of sodium ions, and M is at least one of Co, Ni and Mn. The novel secondary battery provided by the invention does not contain a lithium material and is not restricted by lithium resources, so that the battery can be developed for a long time, and the production cost is remarkably reduced. Compared with an existing sodium-ion battery, the novel secondary battery has the advantages of excellent electrochemical performance, long service life, high capacity retention ratio, relatively high capacity, and simple, easily obtainable and environmental friendly anode and cathode materials, so that the whole battery is simple in production process and low in cost.

The invention provides a gas dehumidification membrane, a preparation method and application thereof. The gas dehumidification membrane is prepared from polyether-b-polyamide and a hydrophilic electrolyte, wherein the mass ratio of the polyether-b-polyamide to the hydrophilic electrolyte is 3:7-9:1, the polyether-b-polyamide is a block copolymer, and the hydrophilic electrolyte comprises an organic electrolyte sodium salt and / or a hydrophilic inorganic salt. According to the invention, the gas dehumidification membrane prepared by compounding the hydrophilic electrolyte and the polyether-b-polyamide is high in permeability, good in gas selectivity, good in stability, capable of preferentially permeating water vapor, high in water vapor separation performance, mild in operation condition, easy to repeat, beneficial to industrialization and suitable for industrial production, and can be applied to dehumidification of gases such as air, nitrogen, hydrogen, natural gas, synthesis gas or pyrolysis gas and the like.

The invention relates to the field of organic electrochemistry synthesis technology, and in particular relates to a method for synthesizing tetrapion by an electric catalytic membrane. The method is characterized by synthesizing the tetrapion in a way of integrating reaction and separation. The invention has the technical scheme that the titanium-based electric catalytic membrane is taken as an anode, and an auxiliary electrode is a cathode to form an electric catalytic membrane reactor; the reactant or feed liquid is mixed water solution of tetrafluoropropanol and sodium salt; under the condition with certain working voltage and current density, the tetrafluoropropanol is converted into an intermediate product tetrafluoropropanoic acid by catalytic oxidation on the surface of the membrane; then, the tetrafluoropropanoic acid and electrolyte sodium salt in the feed liquid have reaction, so that the tetrapion can be generated; meanwhile, a peristaltic pump is used for sucking under the condition with a certain membrane permeation flux; the reactant tetrafluoropropanol can be separated from the product tetrapion in real-time in an on-line way; and the pH value is adjusted to be about 7-8 by collecting membrane permeation liquid, and obtaining the tetrapion product by concentration. Compared with the traditional technology, the method has the advantages of being efficient and environment-friendly, being high in selectivity and simple in operation and the like, thus being suitable for industrialized implementation; and a new method is provided for preparing the efficient herbicide tetrapion and the method has wide application prospects.

The invention discloses a method for preparing an electrode material by graphene oxide and poly 3, 4-ethylenedioxythiophene. The method comprises the following steps of (1) immersing carbon felt in ahydrogen peroxide solution, performing constant-temperature reaction under 90 DEG C, washing the carbon felt with deionized water, and drying the carbon felt; (2) mixing a graphene oxide solution, 3,4-ethylenedioxythiophene solution and an electrolyte sodium sulfate solution, performing ultrasonic reaction to obtain an electrolyte suspension liquid, immersing the carbon felt in the electrolyte suspension liquid, performing immersion for 30 minutes under a room temperature, performing immersing for 2-3 hours under 40 DEG C, and performing electrodeposition; and (3) performing microwave reaction on the carbon felt for 5 minutes, and performing drying. The electrode material prepared by the method is compact and uniform in surface, the electrode is high in specific area and conductivity, lowin impedance and high in electron transfer efficiency, and has favorable biocompatibility, namely power generation performance.

The invention discloses an all-solid-state sodium-sulfur battery and a preparation method thereof. The all-solid-state sodium-sulfur battery comprises a battery positive electrode, an all-solid-stateelectrolyte layer and a battery negative electrode. The all-solid-state electrolyte layer is an electrolyte sodium salt, and the battery negative electrode comprises a negative electrode active material. The battery positive electrode comprises a positive electrode current collector and a positive electrode active material layer, the positive electrode current collector is a metal, metal alloy ormetal compound conductive material, and the positive electrode active material layer comprises a material capable of allowing anions forming sodium salt to be freely adsorbed and removed. Compared with the existing lithium ion battery, the all-solid-state sodium-sulfur battery uses sodium salt instead of lithium salt, so that the application of the all-solid-state sodium-sulfur battery is not restricted by lithium resources. Polysulfide is generated in the discharge process, and polysulfide ions migrate between the positive electrode and the negative electrode, namely the polysulfide shuttle effect. Talc is of a layered structure and can well adsorb polysulfide of lewis base as a lewis acid, so that the polysulfide shuttle effect can be inhibited.

The invention provides an organic electrolyte with a wide working temperature zone, and a sodium ion battery. The organic electrolyte comprises an electrolyte sodium salt and an organic solvent, and the organic solvent comprises one or more of a cyclic ether solvent, a chain ether solvent and a nitrile solvent. The organic electrolyte provided by the invention has the advantages of low viscosity and melting point and high ionic conductivity, and can work in a temperature range of -50-60 DEG C; when the organic electrolyte with the wide working temperature zone is used for constructing the sodium ion battery, the working temperature of the sodium ion battery can be effectively widened, and the safety and the cycling stability of the battery are improved.

The invention discloses an antifriction anti-wear composite material and a preparation method thereof. The antifriction anti-wear composite material is composed of polyethylene with an ultra-high molecular weight and sodium polyacrylate with an ultra-high molecular weight; and the method comprises the steps of firstly selecting the polyethylene powder with the ultra-high molecular weight and the sodium polyacrylate powder with the ultra-high molecular weight, performing drying, performing mixing to form mixed powder, placing the mixed powder in a mold, performing pre-pressing on the mixed powder by using a hot press, and performing a hot pressing forming process by the hot press to obtain the antifriction anti-wear composite material. According to the method provided by the invention, theprinciple that charge repulsion happens between ions generated by hydrolysis of the electrolyte sodium polyacrylate and free ions in seawater is utilized, so that loss of materials is reduced, the tribological properties of the polyethylene with the ultra-high molecular weight are increased, and finally the antifriction anti-wear composite material used for marine equipment is obtained; and the friction coefficient, the wear scar depth and the wear scar width of the antifriction anti-wear composite material under the seawater environment are greatly reduced.

The invention relates to a method for inactivating microorganisms in drinking water based on a photoelectrochemical reactor. The method for inactivating the microorganisms in the drinking water basedon the photoelectrochemical reactor is characterized by comprising the steps that (1) the drinking water is pretreated, specifically, the drinking water to be treated is injected into the photoelectrochemical reactor, electrolyte sodium sulfate is added, a magnetic stirring and aeration switch is turned on, air aeration is carried out for 20 minutes, and the dissolved oxygen concentration in wateris improved; and (2) drinking water disinfection treatment is carried out, specifically, a direct current stabilized current supply of the photoelectrochemical reactor is connected, a modulator tubeof a solar simulator is opened, and treatment is carried out for 2-3 hours; and escherichia coli is inactivated thoroughly and the drinking water standard is reached. By adopting the method for inactivating the microorganisms in the drinking water based on the photoelectrochemical reactor, dissolved oxygen is reduced as hydrogen peroxide through a modified cathode after the power supply is electrified, the hydrogen peroxide inactivates the microorganisms, and the drinking water standard is reached. The hydrogen peroxide generated by electrochemical reduction is combined with solar energy disinfection, the inactivation efficiency of the microorganisms is improved, and the drinking water treatment cost is reduced.

Disclosed are electrochemical devices, such as sodium ion conducting solid state electrolytes, sodium battery electrodes, and solid-state sodium metal batteries including these electrodes and solid state electrolytes. One example method for preparing a sodium / sodium-β″-alumina interface with low interfacial resistance and capable of achieving high current density in an electrochemical cell includes the steps of: (a) providing a precursor electrolyte having a resistive surface region, wherein the precursor electrolyte comprises sodium-β″-alumina; (b) removing at least a portion of the resistive surface region; (c) heating the precursor electrolyte thereby forming a solid state electrolyte, and (d) placing a side of the solid state electrolyte in contact with a sodium anode.

The invention discloses a method for inactivating urine and synchronously removing Pharmaceutical and Personal Care Products (PPCPs) by generating singlet oxygen in situ through a three-dimensional electrochemical reactor, which specifically comprises the following steps of: firstly, adding 106CFU mL <-1 > of escherichia coli bacteria and a urine water sample of 10mg / L of PPCPs into the reactor, then adding electrolyte sodium sulfate into the three-dimensional reactor, performing electrochemical treatment on the urine sample under the conditions of room temperature and external direct-current electric field, wherein 50 mmol of sodium sulfate is correspondingly added into each 1L of urine sample, the third electrode of the reactor is nitrogen and phosphorus co-doped activated carbon particles, the cathode is a modified graphite felt electrode, the cathode is a graphite felt electrode, and the distance between the cathode and the anode in the reactor is 3 cm. The method is simple, sodium sulfate is added into a to-be-treated urine water sample to form a three-dimensional electrochemical reactor, singlet oxygen is generated in situ, bacteria in urine can be fully inactivated, and PPCPs can be synchronously and efficiently oxidized and degraded.

The invention discloses an environmental protection system for treating industrial waste water by an electrolysis method. The environmental protection system comprises a sedimentation tank, a filtering device, a disinfection tank and an adsorption device; an electrolyte tank is arranged between the sedimentation tank and the filtering device through a liquid conveying pipeline; an electrolyte sodium chloride is arranged in the electrolyte tank; two rectangular electrodes are arranged in the electrolyte tank; a water absorption pipe extends to the central position of an electrolyte sodium chloride liquid; a soft water tank communicates with a reverse osmosis filtering device through a liquid conveying pipeline; and the electrolyte tank, the disinfection tank and the soft water tank respectively convey a coagulant, a disinfectant and a softening agent through a first reagent adding device, a second reagent adding device and a third reagent adding device. In the system, harmful substancesare rapidly and efficiently separated out from industrial wastewater through electrolysis of the electrolyte, and the harm to the natural environment is reduced on a large scale after the discharge of the treated wastewater. In addition, the environmental protection system provided by the invention is low in cost, high in efficiency and simple in operation and is worthy of promotion.