53results about How to "Solve the problem of environmental pollution" patented technology

The invention relates to a green environment protective biological organic compound fertilizer produced by adopting biological azotobacter, organic phosphorus bacteria, crop growth factor, organism, inorganic substance and microelement which are processed by a special technology, and a production method thereof. Biological bacterial fertilizer, organic fertilizer and inorganic fertilizer are interdependent and decomposed, and play mutual synergistic action to reach the special efficacy of fully utilizing the biological bacterial fertilizer to decompose the organic fertilizer and the inorganicfertilizer and reach the effect of stimulating the growth of crops, thus leading crops to absorb and utilize fertilizer well so as to achieve the purposes of crop production increasing and fertilizersaving. The invention has simple technical method and process, effectively utilizes urban garbage and subsidiary agricultural product offal as raw materials of the organic fertilizer, saves inorganicfertilizer, reduces cost, can be widely used in crops and fruit bearing forests, is especially suitable for greenhouses, base fertilizer and additional fertilizer of crops at the temperature of more than 20 DEG C, and is suitable for popularization and application across the country.

A flavouring is prepared from the head and shell of prawn through frying in hot oil, flavouring, pulverizing, grinding, packing and sterilizing. Its advantages are high flavouring effect, short preparing period, and no environmental pollution.

The invention provides a method for treating waste liquor generated from lysine fermentation and solves the difficulty impeding the development of lysine production enterprises. The method comprises the primary technical process that the waste liquor goes through the process of concentration, crystallization, slurry-spraying granulation, washing for dedusting, electrostatic treatment, biochemicaltreatment, etc., and ammonium sulphate is reclaimed from the waste liquor as the raw material for fermentation, so as to obtain a compound fertilizer of high economic value; meanwhile, the treated wastewater and the treated exhaust gas reach national standard, thereby realizing the comprehensive utilization of the waste liquor generated from lysine fermentation. The invention further discloses equipment required for slurry-spraying granulation. The treatment of the waste liquor generated from lysine fermentation according to the technique and the equipment provided by the invention not only is favorable for environmental protection, but also turns the waste into the valuable, thus obtaining good economic and social benefits.

The invention discloses a method for treating artificial wetland breeding wastewater by integration of straw, biochar and organism. According to the method, breeding wastewater passes an anaerobic fermentation tank, three substrate tanks and four wetland tanks in sequence; a substrate channel is arranged between the anaerobic fermentation tank and the first substrate tank, between two adjacent substrate tanks, as well as between the third substrate tank and the first wetland tank; straw is laid in the substrate channels and the substrate tanks; wild plants are added onto the straw; a water blocking drop water dam is arranged at the water outlet of each substrate tank; the wetland tanks are surrounded by ridges; two adjacent wetland tanks are separated through one ridge; overflow openings of which the cross sections are in the shape of an inverted trapezoid are formed in the upper end surfaces of two ridges of each wetland tank; myriophyllum verticillatum is added into each wetland tank; a biochar layer is arranged in front of the overflow opening, near discharged water, of the last wetland tank. According to the method for treating artificial wetland breeding wastewater by integration of straw, biochar and organism, the water quality of the end discharged water is greatly superior to the water pollutant discharge standard of the national breeding industry.

The invention relates to a method for preparing washing surfactant by utilizing tanning waste chrome shavings. The method comprises the following steps: performing protomorphic dechromization on the tanning waste chrome shavings to obtain a chrome shaving protomorphic dechromized product; hydrolyzing the obtained chrome shaving protomorphic dechromized product to obtain protein polypeptide hydrolysate; performing acylation condensation by utilizing fatty acyl chloride to obtain an initial product of the surfactant; and adding sodium carbonate, sodium dodecyl benzene sulfonate, absolute ethyl alcohol and sodium benzoate, and stirring to react to obtain the final product washing surfactant. If the surfactant prepared by utilizing waste leftovers in tanning can be popularized and applied, the problem of environmental pollution caused by tanning waste can be effectively solved, and the production cost for the surfactant product can be greatly reduced.

The invention provides a method for leaching an alloy material obtained from the magnetic-separating copper-nickel ore concentrate, relating to a method for recycling the platinum group metals in the process of producing the metallic nickel, in particular to a method for recycling the platinum group metals from the fine alloy material of the leaching magnetic separation copper-nickel ore concentrate. The method is characterized in that the leaching process adopts two sections: one is leaching at standard atmosphere and the other is leaching with pressurization to obtain the leaching slag with high platinum group metals content and the leaching liquid with high nickel-copper content. The method of the invention processes the alloy material of the leaching magnetic separation copper-nickel ore concentrate by the wet method technique, and adopts the processing technique combining the sulphuric acid leaching at standard atmosphere and the leaching with pressurization to obtain the leaching liquid with high nickel-copper content and the leaching slag with high platinum group metals content; the leaching slag is directly used for recycling the platinum group metals and the leaching liquid enters the electrolytic nickel system. The method effectively solves the recycling problem of the platinum group metals and the problem of environmental protection, is simple and efficient and protects the environment.

A coating agent containing chitosan for the seeds of vegetables including cabbage, cucumber, hot pepper, tomato, etc and containing chitosan, disperser, adhesive and surfactant. Its advantages include promoting growth of seedlings, preventing diseases and improving quality of vegetables.

The invention relates to a preparation method of a leather meal cement foaming agent. The preparation method comprises the following steps: adding water, leather meal and alkali and hydrolyzing at 80-100 DEG C for 7-9 hours; carrying out centrifugal filtration; adding a proper amount of solvent S to the obtained hydrolysate, and keeping the pH neutral, and preparing an animal protein-based cement foaming agent base liquid under the condition; and adding different kinds of foam-stabilizing components and enhancing components to the base liquid, mixing evenly and preparing the animal protein-based cement foaming agent. The obtained foaming agent is high in foaming capacity, fine and uniform in foam, high in stability, low in price, and available in raw material; the tanning solid waste resource utilization way is expanded; if the foaming agent is popularized and applied, the problem of solid waste recycling of the tanning industry can be relatively well solved.

The present invention discloses a sterilization and disinfection method to air by using high purity CO2, and a special appliance for implementing said method. The method includes: sodium chlorite solution with 1.8-2.5% concentration and dilute hydrochloric acid solution with 4-6 % concentration are added into vaporizer to react, at the same time, compressed air is continuous transported into vaporizer to react gasifying, high purity CO2 gas is produced and is carried out of vaporizer by incoming compressed air and dilution air, and is exhausted to space needing disinfection. CO2 gas prepared by the method has more than 99% purity, and ClO2 yield rate is more than 75%, at the same time, disinfectant amount and disinfection time can be regulated by actual need, and is transported to disinfection locale. The method has merits of high self-control level, strong safety, simple operation, stabile circulation, better effects on sterilization and removal smell removal, and can satisfy the need of air disinfection, refreshing in various locale.

A method for recovering dichlordihydrosilicate from tail gas generated from polysilicon production comprises the following steps: the tail gas is leached at low temperature, pressurized and cooled for gas-liquid separation; gaseous hydrogen, hydrogen chloride and the dichlordihydrosilicate pass through a liquid absorbent to cause the gaseous hydrogen chloride and the dichlordihydrosilicate to be dissolved in the liquid absorbent, and the hydrogen is separated from the hydrogen chloride and the dichlordihydrosilicate; the hydrogen chloride and the dichlordihydrosilicate dissolved in the liquid absorbent are desorbed by increasing the temperature; the gas-liquid separation is carried out on the desorbed gaseous hydrogen chloride and the dichlordihydrosilicate by controlling the pressure and / or the temperature, therefore, the hydrogen chloride becomes gaseous and the dichlordihydrosilicate becomes liquid, and then the dichlordihydrosilicate is recovered. By adopting dry processing, the dichlordihydrosilicate in the tail gas is recovered and can be reused in the polysilicon production, therefore, the method has the advantages of adequate utilization of raw materials, reducing pollutants, solving the problem of environmental pollution, improving product quality and lowering cost.

The present invention provides a method for restraining global warming by reducing air CO2 concentration through plant carbon sequestration. Gaseous CO2 in atmosphere is transferred to a biosphere for forming a solid-state organic carbon compound through plant photosynthesis, the 'dynamic carbon' is converted into the 'static carbon', the air carbon separation is realized, and the air CO2 concentration is reduced. The plant carbon sequestration is performed by the utilization of usage carbon sequestration, application carbon sequestration, forming carbon sequestration, landfill carbon sequestration and the like, the CO2 release of a biomass carbon pool to the atmosphere is controlled so that the development mode of atmosphere carbon reduction, zero carbon and negative carbon is realized. The method includes the steps as follows: 1) detecting the CO2 concentration in atmosphere so as to determine the CO2 concentration in the current atmosphere; 2) analyzing and assessing the influence of the CO2 concentration in the current atmosphere on greenhouse effect according to the detection data; 3) determining carbon sequestration plant cultivation area, carbon sequestration amount and carbon sequestration type according to the assessment result. The method can adjust greenhouse effect and control global climate change.

The invention relates to a method for catching the powder whose diameter is than nanometer grade, which comprises: the first step that increasing the diameter of gas with nanometer powder exhausted by nanometer powder production and burning process; and the second step that guiding it into rotary packed bed. Wherein, the first step can mix the gas with mist drip or vapor, via the impact between nanometer powder and mist drip or vapor and the condensation nucleus as nanometer powder to process the nucleus condensation growth to increase the diameter of nanometer powder; and the second step uses the micro-drip generated by rotary packed bed and the amputation function of bed to collect the particle with increased diameter via centrifugal force. And the first step can be processed in said rotary packed bed, while the gas with nanometer powder is directly guided into said rotary packed bed for a long time.

The invention discloses a method for producing a corn liquid fertilizer by sisal hemp wastewater. The corn liquid fertilizer is characterized by comprising the following raw materials in parts by weight: 65-75 parts of fresh sisal hemp wastewater, 20-30 parts of inorganic fertilizers, 0.1-0.5 part of secondary elements, 0.05-0.1 part of trace elements, 0.1-0.2 part of organic acid and 0.01-0.05 part of botanical fungicide, wherein the corn liquid fertilizer is prepared by fermenting and is produced by taking the wastewater after processing the sisal hemp; the waste is turned into wealth; the environment pollution problem is also solved; the production cost is low; the reasonable inorganic fertilizers and secondary-element nutrients are mixed in the corn liquid fertilizer; meanwhile, the corn liquid fertilizer contains the insect-repelling and bacteriostatic components; the corn liquid fertilizer is capable of quickly supplementing the nutritional ingredients of the corn, promoting rapid growth of the corn, applying fertilizer and repelling the insects; compared with the conventional inorganic fertilizer, the corn liquid fertilizer has an obvious yield-increasing effect and a remarkable economic benefit.

The invention discloses a method for simultaneously producing ethanol and hydrogen by using cassava residue through fermentation. The method comprises the following steps of: preparing two kinds of thermo-anaerobes and yeast seed liquor; preparing a fermentation medium and sterilizing; performing thermophilic fermentation and collecting the hydrogen; and performing ethanol fermentation and the like. In the integrated fermentation process, after the thermophilic fermentation is performed for 72 to 108 hours, yeast is inoculated, fermentation is continued for 12 to 24 hours, fermented liquor has the alcohol content of more than 7.12g / L, the fermentation efficiency is over 75 percent and the fermentation is stopped. The cassava residue is a waste in the cassava starch industry, contains fine-particle starch and cellulose, has a larger specific surface area, is easily hydrolyzed and utilized by enzyme producing microbes without pretreatment, can be used for integrated fermentation of the ethanol and the hydrogen without additional enzyme, has the characteristic of negative cost, can be changed into treasure, and solves the problem of environmental pollution in the cassava starch industry.

The present invention relates to a kind of mushroom sauce and its preparation method. Its raw material composition includes (by weight portion) 70-90 portions of mushroom extract, 0.1-0.5 portion of pepper, 0.05-0.5 portion of star anise, 3-7 portions of amino of star anise, 3-7 portions of amino acids, 0.03-0.09 portion of citric acid, 0.004-0.008 portion of edible colouring matter, 1-2 portions of sodium 5'-inosinate, 1-2 portions of sodium 5'-guanylate, 3-12 portions of granulated sugar, 1-2 portions of old ginger and 14-17 portions of edible salt. Said invention also provides the concrete steps of its preparation method.

The invention relates to a livestock and poultry excrement treatment method. The method comprises the steps: adjusting the water content of the excrement to 48 to 55 percent, and then uniformly mixing the excrement and a microorganism fermenting agent and inorganic matters according to a mass ratio of (40-55): (4-7): (2-3); and then placing an obtained mixture in a fermenting tank to have anaerobic fermentation, wherein the inorganic matter is a mixture of zinc sulfate, ammonium bicarbonate and calcium chloride or mixture of phosphate rock powder, ammonium bicarbonate and calcium chloride. The method is used for treating livestock and poultry excrement and is fast in fermentation process and pollution-free to the environment, thereby fundamentally solving the environmental pollution problem. The treated livestock and poultry excrement can be directly used as biological organic fertilizer, thereby converting waste into treasure.

The invention relates to a method for preparing an amino aromatic sulfonic acid concrete superplasticizer by utilizing synthesized aspirin waste liquor to partially or completely substitute phenol so as to be condensed with sulfanilic acid and formaldehyde. The preparation method comprises the following steps of: distilling the synthesized aspirin reaction waste liquor and recovering solvent acetic acid so as to obtain phenol residue; adding sulfanilic acid or a mixture of sulfanilic acid and phenol into a phenol residue sodium salt solution, and then stirring until the substances are completely dissolved; dropwise adding a 37% by mass of formaldehyde aqueous solution under the conditions that the pH value of a reaction liquid is 8.0-8.5 and the temperature is 90-95 DEG C; carrying out a condensation reaction for 3-6 hours at the reflux temperature, and carrying out reflux condensation for 1 hour at the pH of 10-11; adding a small amount of urea so that the content of free formaldehyde is less than 0.5%; and concentrating the reaction liquid in vacuum, and cooling to obtain a 40% by mass of amino aromatic sulfonic acid concrete superplasticizer liquid. The invention provides a comprehensive utilization method of synthesized aspirin waste liquor; and by using the method, the pollution generated in the aspirin production process is reduced, raw material cost is low, and application prospect is wide.

The invention relates to a livestock and poultry feed produced from dregs, a preparation method of the livestock and poultry feed, and in particular relates to a livestock and poultry feed produced from sophora japonica solid dregs, and a preparation method of the livestock and poultry feed, aiming at providing the livestock and poultry feed which is fermented by aspergillus niger and prepared from the hydrolyzed sophora japonica solid dregs, and an efficient preparation method of the feed. In order to solve the technical problems, the adopted technical scheme is as follows: the preparation method comprises the steps of feeding glucose, (NH4)2SO4, KH2PO4 and MgSO4. 7H2O, mixing according to a certain proportion, and feeding water for dissolving; then feeding the sophora japonica dregs, stirring, feeding water and fully and evenly stirring; putting the product into a culture tray; inoculating the aspergillus niger into the product, compacting and shading; and carrying out heat preservation airtight culture for 3-5 days, drying the product in the environment of 40-50 DEG C to obtain the yeast seed, collecting and storing. The sophora japonica dregs can be made into a livestock feed by biological fermentation, so that the problem that the environment is polluted by the discharged dregs can be solved, and the livestock feed prepared from the sophora japonica dregs has a wide application prospect.

A cultivation material for edible fungi, comprising oil-containing waste clay and organic material, the weight percentage of oil-containing waste clay is 10% to 30%, the weight percentage of organic material is 70% to 90%, and the organic material is cottonseed hull, At least one of wood chips, wheat bran, grass powder, corncobs, and rice bran. Tests show that the edible fungi cultivating material of the invention has a good cultivation effect for edible fungi and can fully meet the nutrient requirements for the growth of edible fungi.

The invention discloses a method of completely non-noxious treatment of a scrapped silicon dioxide etching solution. The method adopts a second stage method, and specifically, the primary treatment is to adjust the pH value of waste fluid, add calcium salt to remove fluorine and meanwhile perform air stripping to remove ammonia nitrogen; secondary treatment is to adjust the pH value of filtrate, add calcium hypochlorite, keep the pH value and perform stirring reaction for a certain time, enable ammoniacal nitrogen to be oxidized into harmless nitrogen gas for complete removing, add ferrous salt to remove active chlorine, ensure that all filtered residues enter a cement kiln, so as to be comprehensively utilized, and ensure that secondary filtrate can achieve the primary standard of integrated wastewater discharge standard. Completely non-noxious treatment of the scrapped silicon dioxide etching solution can be realized through the treatment method.

The invention belongs to the field of genetic engineering and specifically relates to a catechol 2,3-dioxygenase gene and an application thereof. The nucleotide sequence of the catechol 2,3-dioxygenase gene is shown as SEQ ID NO.1. The gene expression product catechol 2,3-dioxygenase is capable of effectively hydrolyzing aromatic compound catechol, 4-methyl catechol, catechol, 1,2,4-pyrogallol and2,6-dimethyl-1,3,4-pyrogallol. The catechol 2,3-dioxygenase gene can be applied to the industries of biological remediation for environmental pollution, industrial wastewater treatment and 2-hydroxylfurfural production, not only can solve the environmental pollution of catechol aromatic compounds, but also can acquire great economic benefit.

The invention relates to the field of wastewater comprehensive recycling, in particular to a comprehensive recycling method of cobalt smelting high-magnesium ammonium sulfate wastewater and aims to overcome the defect that once high-concentration ammonia nitrogen and high-concentration magnesium ions in the cobalt smelting high-magnesium ammonium sulfate wastewater are discharged into a water body, it is easy for algae and other microorganisms in the water to massively breed, the water body experiences eutrophication and pollution is caused. The technical problem to be solved is to provide a comprehensive recycling method of cobalt smelting high-magnesium ammonia sulfate wastewater; by the combination of cobalt and nickel precipitation by sodium sulfide, magnesium removal by MAP precipitation and crystallized ammonium sulfate recycling by four-effect continuous evaporative concentration, the problem that high-magnesium ammonium sulfate is difficult to treat is solved, cobalt and nickel and byproducts such as magnesium ammonia phosphate hexahydrate and ammonium sulfate products in the wastewater are recycled; the ammonia nitrogen concentration in the wastewater is reduced, and environmental impact is reduced.

The invention belongs to the technical field of a coal tar deep processing process of a metallurgy coking industry and particularly relates to a device for preparing refined anthracene and refined carbazole by taking anthracene oil as a raw material. The device is characterized by comprising a cooling and concentration system, an anthracene-enriched oil and pre-fractionation system, an anthracene rough fraction rectification system, a carbazole rough fraction rectification system, an anthracene narrow fraction washing and drying system, a carbazole narrow fraction washing and drying system and a solvent recycling system. A light fraction, an anthracene rough fraction, a carbazole rough fraction and a heavy fraction are separated from a pre-fractionation device of the anthracene-enriched oil; the anthracene rough fraction and the carbazole rough fraction are respectively refined in corresponding rectification devices to obtain an anthracene narrow fraction and a carbazole narrow fraction; the anthracene narrow fraction and the carbazole narrow fraction are washed in respective washing and drying devices to wash, separate and dry solid matters so as to obtain the refined anthracene product and the refined carbazole product. The device provided by the invention is efficient, energy-saving, low in loss and environment-friendly.

A rotary liquid sand blasting machine is composed of a machine body, a secondary vertical planet gear reduction motor, a primary vertical planet gear reduction motor, a belt wheel transmission mechanism, a workpiece fixture, a hopper, a water tank, a rotary one-row one-side two-hole chain, spray guns, opposite type detection switches, photoelectric proximity switches, a synchronous belt, a pen type air cylinder, workpieces, a liquid grinding pump, a conventional mechanical transmission system, a medium power system, a pipeline system and an electronically intelligent PLC program control system, the liquid grinding pump, the conventional mechanical transmission system, the medium power system, the pipeline system and the electronically intelligent PLC program control system are matched withthe rotary liquid sand blasting machine, and the novel rotary liquid sand blasting machine is formed. Compared with the prior art, 1, the problem that a dry type sand blasting machine pollutes the environment is solved, and the worker operation environment is improved; 2, continuous operation is achieved, and the working efficiency is improved; and 3, the rotary liquid sand blasting machine is novel and simple in structure, reliable in function and advanced in structure and has broad application prospects.

The invention discloses a wind driven permanent magnetic ore dressing method, which comprises the following steps: 1, coarsely crushing raw ore by jaw crushing to obtain coarse ore; 2, finely crushing the coarse ore by double-stage hammer crushing and obtaining fine ore; 3, sieving the fine ore, collecting fine ore with water content less than 3 percent for later use and drying fine ore with water content higher than 3 percent till the water content is less than 3 percent for later use; 4, performing initial magnetic dry separation on the fine ore obtained by the step 3, collecting the dryly separated magnetic fine ore for later use, and filling the tailings back to a mine; 5, grinding the dryly separated magnetic fine ore to obtain ore powder; 6, subjecting the ore powder to magnetic concentration, warehousing the concentrated magnetic metal powder, and filling the tailings back to the mine; and 7, planting trees in the refilled tailings. When the method is used, the water and power consumption is small, the recovery rate is high, the tailings are refilled directly, trees are planted in the tailings, pollution is avoided and potential collapse risks are avoided.

The invention relates to a preparation method of an insulating brick containing plant straws. The preparation method is characterized in that the insulating brick is produced from the raw materials in parts by weight: 70-80 parts of the plant straws, 13-25 parts of magnesium hydroxide and 5-10 parts of isocyanate and comprises the steps: crushing the plant straws to obtain crushed plant straws with the fiber length of 5-10mm, drying the crushed plant straws until the moisture content is 8 percent according to the weight percentage, weighing the plant straws according to the parts by weight, adding the magnesium hydroxide and the isocyanate as a binder according to the parts by weight, carrying out mixing and burdening, then carrying out prepressing with the precompression of 500 tons, then carrying out compression molding with the die pressure of 1.2 kilotons, heating to 110 DEG C by virtue of a high-frequency electromagnetic induction method, and carrying out hot pressing for 3-6 minutes to form the insulating brick. According to the production method disclosed by the invention, with the plant straws as main raw materials, the produced insulating brick has a good fireproof performance without needing secondary insulation; in addition, the insulating brick is rapid in construction, has a favorable anti-seismic effect and has the shock strength according with the stipulations of a national standard in wall materials.

The invention discloses a device for removing solid particles in the ultrahigh pure ethyl silicate steel cylinders. Compared with the prior art, dual loops are adopted for filtering, the two steel cylinders can be treated at the same time, and the treatment efficiency of the steel cylinders is improved; repeated filtering replaces cleaning of a large amount of high-purity water, no waste liquid isgenerated, and the steel cylinders do not need to be subjected to water removal treatment; the treatment time of the steel cylinders is reduced, and the usage level is low; the device is reasonable in structural design and simple in operation, and the metal impurity content can be strictly controlled within the acceptable range; and meanwhile, a tail gas adsorption column can be further arranged,and the problem of environment pollution of tail gas emission is solved.

The invention discloses a method for preparing a rubber filler by using an inorganic salt for neutralizing alkali lignin. The filler is a product obtained by inorganic salt neutralization, ball milling and drying of alkali lignin and clay with a mass ratio of 10:1-1:10, and the water content of the finished product is 1 wt%-60 wt%. The inorganic salt is directly used as a neutralizing agent of alkali lignin and replaces an inorganic acid with relatively strong acidity, the preparation process is simplified, alkali lignin can be reasonably utilized, and the environmental pollution problem is solved. Through experiments, compared with an application of a filler prepared through sulfuric acid neutralization in rubber, the rubber composite material prepared by the rubber filler has all the tensile strength, stress at definite elongation, elongation at break, hardness and other mechanical properties significantly improved.

The invention discloses a protection method of explosive welding. Two different metal plates are superposed, an explosive layer is paved on a metal compound plate, and explosive explodes to obtain a metal compound plate. A protection material layer covers the explosive surface, and a protection material comprises a porous gauze material. An adsorber is arranged on the porous gauze material, the explosive explosion noise is remarkably attenuated, the explosive energy is fully utilized, thus, the problem that the energy utilization rate of explosive used for explosive welding is low is solved, and meanwhile, the problem of environment pollution during explosive welding construction is solved. By means of the protection material, the explosive use amount can be decreased by 40-60%, and the explosion noise can be decreased by 50-80%.

The invention discloses a method for preventing elemental sulfur from adhering to the surface of an electrode in the electrocatalytic reduction process of sulfur dioxide. A three-electrode system is adopted in the electrocatalytic reduction process; a cathode chamber and an anode chamber of the three-electrode system are separated by a proton membrane; the electrolyte in the cathode chamber is sulfur dioxide absorption liquid added with a surfactant; an electrolyte in the anode chamber is a Na2SO4 / H2SO4 mixed solution; metal electrodes such as lead are used as working electrodes; Pt is used asa counter electrode, a saturated calomel electrode is used as a reference electrode, elemental sulfur particles are separated out from an electrolyte in a cathode chamber after electrocatalytic reduction, and the problem that elemental sulfur separated out in the sulfur dioxide electrocatalytic reduction process adheres to the surface of the electrode is solved mainly by adding the surfactant. According to the method, sulfur dioxide can be efficiently electrocatalytically reduced to generate elemental sulfur, poisoning of the elemental sulfur to the surface of the electrode can be effectivelyeradicated, the process is short, operation is easy, secondary pollution is avoided, and industrial application is facilitated.