348 results about "Activated persulfate" patented technology

The invention relates to the technical field of environmental functional materials and water treatment, and discloses a preparation method and application of a persulfate activator for efficiently removing drug-resistant bacteria and drug-resistant genes in water. Waste biomass and waste plastics are used as raw materials, solid waste resource utilization is achieved through synergistic pyrolysis, compared with a traditional catalyst, the preparation cost can be reduced by more than 40%, and remarkable economic and environmental benefits are achieved. The catalyst has the following advantages: 1) the limitation of a traditional single-active-site catalyst is broken through through the triple synergistic effect of transition metal oxide variable valence activation, nonmetal doped carbon electron conduction and an oxygen vacancy non-free radical path; 2) physical interception of ARB and enrichment of ARGs can be realized at the same time by utilizing a multi-stage pore channel structure; and (3) activating persulfate to generate free radicals (SO4 <->. / . OH) and non-free radicals (1O2 / electron transfer) to generate a double-path synergistic effect, thereby realizing efficient removal of ARB / ARGs in water.

The invention belongs to the technical field of solid pollutant treatment, and particularly relates to a method for removing cyanide in cyanidation tailings through metal activated persulfate oxidation. The problems that different cyanide removal mechanisms are different, the removal efficiency is low, the cost is high, secondary pollution is easily caused and the like exist in treatment of the cyanidation tailings. The tailings are subjected to cyanogen reduction treatment by adopting a stage treatment method. The method comprises the following steps: firstly, crushing the tailings to prepare a charcoal-loaded metal composite material Me / BC; when free cyanide in the tailings is smaller than or equal to 50 mg / kg, Me / BC activated persulfate is used for conducting cyanide reduction treatment on the tailings; when the tailings contain free cyanide gt; when the concentration is 50 mg / kg, free cyanides in the tailings are removed through leaching, and then Me / BC is used for activating persulfate to degrade strong complex state cyanides in the tailings. By adopting the method, the problems that complex cyanide is difficult to remove by a single leaching method and persulfate is large in dosage and high in cost in a single oxidation method can be solved, and the cascade cyanogen removal method is efficient, low in cost and free of secondary pollution.

The present invention discloses a layered metal hydroxide composite catalytic material, its preparation method and application. The composite catalytic material comprises a carrier carbon nanotube and a metal hydroxide loaded on the carbon nanotube, and the metal is iron, cobalt and nickel. Preparation method: (1) Dissolve nickel salt, cobalt salt, iron salt and urea in an alcohol solution, stir evenly, then add carbon nanotubes, and continue to stir evenly to obtain a mixed solution; (2) Carry out a solvothermal synthesis reaction on the mixed solution obtained in step (1), filter, wash and dry after the reaction is completed to obtain the layered metal hydroxide composite catalytic material. The carbon nanotubes are introduced into the layered metal hydroxide in this composite catalytic material, reducing the precipitation of metal ions, avoiding the aggregation of hydroxides, improving the stability and catalytic activity of the catalytic material, and being used for activating persulfate to degrade organic pollutants, realizing the efficient activation of persulfate so as to improve the degradation rate of pollutants.

The invention discloses preparation of a two-component biochar composite material and application of the two-component biochar composite material to removal of antibiotics in wastewater by activating persulfate, and relates to a preparation method of the two-component biochar composite material. The invention aims to solve the problems that the existing biochar material has few surface active sites and limited catalytic ability to antibiotics in wastewater. The method comprises the following steps: 1, shearing, crushing, washing and drying a biomass material, and sieving after drying to obtain fine biomass material powder; 2, mixing and grinding the fine biomass material powder, metal salt and a pore-forming agent; and 3, placing the mixture in a tubular furnace, and carrying out pyrolysis in an inert atmosphere to obtain the bi-component biochar composite material. The bi-component biochar is synthesized through one-step pyrolysis, the preparation method is simple, operability is high, and the biochar is used for activating persulfate to remove antibiotics in wastewater.

The invention discloses a method for removing organic pollutants in a water body by activating persulfate by using an iron cluster modified manganese monatomic catalyst, which is characterized in that the iron cluster modified manganese monatomic catalyst is used as a catalyst to activate the persulfate to degrade the organic pollutants in the water body. Wherein the manganese monatomic catalyst modified by the iron cluster comprises a porous nitrogen-doped carbon layered material and manganese monatomic loaded between the surface and the layered structure of the porous nitrogen-doped carbon layered material, the manganese monatomic is modified with the iron cluster, the valence state of iron is divalent, and the valence states of manganese are divalent and trivalent. The method has the advantages of being simple in process, convenient to operate, low in cost, high in practicability, wide in application range, small in catalyst dosage, high in treatment efficiency, good in degradation effect, environmentally friendly and the like, can effectively degrade high-concentration organic pollutants in a water body, particularly has a better removal effect on organic pollutants with the concentration smaller than or equal to 30 mg / L, is high in use value and has a good application prospect. The application prospect is good.

The invention discloses a preparation method and application of a high-valence nickel monatomic catalyst, through the synergistic effect of nickel-phenanthroline complexing and inert template anchoring, dense and stable anchoring sites are provided for nickel atoms, atom migration and agglomeration in the high-temperature pyrolysis process are effectively inhibited, and the high-valence nickel monatomic catalyst is prepared. Meanwhile, by combining with an air-inert atmosphere two-step calcination procedure, air pre-oxidation is carried out, and a nickel precursor is stabilized in a carrier framework to prevent the nickel precursor from being reduced into a metal state in subsequent high-temperature inert calcination, so that the nickel precursor is locked in an electron-deficient high valence state, and a nickel-loaded material with the nickel loading capacity of 2.9-9.2 wt% and the nickel loading capacity of 9.2-9.2 wt% is prepared. And the nickel element stably exists mainly in the form of Ni < 3 + > or a higher-valence monatomic form, so that the three-in-one breakthrough of high load, high valence and high stability is realized. When the obtained catalyst activates persulfate, high-valence metal oxygen species are preferentially generated, various new pollutants are degraded, and the catalyst has high activity, selectivity and high stability.

The invention relates to a series of cobalt-nitrogen-carbon confinement cobalt nano-particle catalysts with high catalytic activity and high cycle stability and a preparation method thereof, wherein the cobalt-nitrogen-carbon confinement cobalt nano-particle catalysts are obtained by changing the ratio of cobalt-cobalt Prussian blue analogue to melamine in a precursor and calcining. Under the conditions of different ions, organic matters and complex water quality, excellent catalytic activity is still maintained, and efficient degradation of p-hydroxybenzoic acid is realized. The core-shell structure formed by the cobalt-nitrogen-carbon confinement cobalt nanoparticles in the catalyst plays a very important role in exposure of active sites and formation of local high instantaneous concentration, persulfate can be effectively activated to generate non-free radical dominated high-valence cobalt oxygen species, migration and interaction with pollutants are enhanced, and the pollution to the pollutants is reduced. And the characteristics of high activity, strong environmental resistance, high cycle stability and the like of the catalyst are realized. The catalyst has excellent removal efficiency on various pollutants, preparation and characteristics of the catalyst are not reported before, and the catalyst has a good prospect in the application field of complex matrix organic wastewater.

The invention discloses a spinel and aluminosilicate composite Fenton-like catalyst derived from iron tailings as well as a preparation method and application of the spinel and aluminosilicate composite Fenton-like catalyst. Solid waste iron tailings are used as raw materials, a powdery spinel and aluminosilicate composite material is prepared through an improved sol-gel-calcination technology, then the powdery spinel and aluminosilicate composite material, biochar and water glass are mixed, molded and calcined, and the granular composite catalyst is prepared. The method is simple and convenient to operate and low in cost, and has industrial preparation feasibility. The prepared catalyst can efficiently activate oxidizing agents such as persulfate and hydrogen peroxide to generate active oxygen species, and organic pollutants in mineralized water can be rapidly degraded. The method is characterized in that the catalyst is prepared from iron tailings in a high-valued manner, the specific surface area of the material, the generation efficiency of active species and the cycling stability are remarkably improved through structure optimization, the problems that a traditional catalyst is high in cost, poor in industrial adaptability and the like are solved, and an economical and environment-friendly new thought is provided for large-scale treatment of organic pollution through an advanced oxidation technology; the method has double benefits of tailing recycling and environmental pollution treatment.

The invention discloses a method for degrading benzene series in wastewater and inhibiting generation of bromate by electrically activating persulfate. The method is suitable for treatment of bromine-containing water. According to the method, a persulfate electrochemical activation technology is adopted, the current density and the persulfate concentration are controlled, sulfate free radicals (SO4 <.->) and hydroxyl free radicals (HO <.->) generated by an electro-activated persulfate system can effectively degrade benzene series, and meanwhile, effective inhibition on generation of bromate is realized by utilizing a cathode reduction effect; meanwhile, organic pollutants in the water body are efficiently removed. The technology does not need additional reducing agents, is green and environment-friendly, and is suitable for drinking water and industrial wastewater treatment.

The invention belongs to the field of water pollution treatment, and particularly relates to a method for degrading chlorophenol organic pollutants in water by activating persulfate with a cobalt-cerium dioxide monatomic catalyst in the presence of bicarbonate radicals. According to the invention, cerium nitrate hexahydrate is calcined in a muffle furnace to obtain cerium dioxide. A catalyst precursor is prepared by a traditional isovolumetric impregnation method. The prepared catalyst precursor is annealed at different temperatures to obtain a series of catalysts, the catalytic performance of Co1-CeO2-700 is optimal, and the Co1-CeO2-700 has more excellent catalytic performance in the presence of bicarbonate radicals. The preparation method provided by the invention has the advantages of simple steps, convenience in operation, quick effect of treating chlorophenol, high product yield and low cost, and has good economic value and social benefit. The prepared monatomic catalyst has the advantages of being high in atom utilization rate, good in stability, excellent in catalytic effect and the like, and is expected to become a key technology for solving actual water environment organic pollution.

The invention relates to an organic combined polluted underground water in-situ remediation method based on a micro-nano iron-based material. The method comprises the following steps: acquiring underground water pollution information; establishing a composite reaction zone at a preset position, and constructing a reduction-oxidation chain reaction system; and operating the composite reaction zone, collecting monitoring data, and optimizing the composite reaction zone until the composite pollution is degraded and removed to a preset value. Through series reaction of powerful reduction of the micro-nano iron-based material and advanced oxidation of the iron-based activated persulfate, the performance of the micro-nano iron-based material serving as a strong reduction material and an active agent is fully played, pollutants such as halogenated hydrocarbon in underground water are sequentially subjected to reduction degradation, pollutants such as benzene series and volatile phenol are sequentially subjected to oxidative degradation, and the pollution to the underground water is reduced. Effective management and control of underground water combined pollution of medical and chemical parks and enterprises are realized; a monitoring well is configured based on a composite reaction zone, and remediation materials are discontinuously added in combination with management and control conditions, or other management and control materials are flexibly selected, so that long-term management and control of groundwater pollution risks are realized.

The invention relates to a method for treating wastewater by activating peroxymonosulfate through cobalt nanoparticle encapsulated carbon nanotubes, which comprises the following steps: adding a nanoparticle encapsulated carbon nanotube catalyst with the concentration of 10-200mg / L into wastewater, and stirring; after uniformly stirring, adding peroxymonosulfate with the concentration of 0.1-2.0 mmol / L to generate hydroxyl radicals to degrade organic pollutants in the wastewater; and after the wastewater is treated, recovering the nano-particle encapsulated carbon nanotube catalyst. According to the invention, the carbon nano tube provides a protection effect on the cobalt nano particles and plays a role in continuously and efficiently activating peroxymonosulfate to generate active species, so that the carbon nano tube has excellent recycling performance; meanwhile, in practical application, the commercial PES film loaded with the cobalt nanoparticle encapsulated carbon nanotube catalyst can be used for continuously and effectively removing organic pollutants.

The invention discloses a composite membrane with adsorption separation and catalytic degradation functions as well as a preparation method and application of the composite membrane. The composite membrane is supported by a porous base membrane, a polyamide separation layer formed by reaction of a 3, 4-dihydroxyphenylethylamine and 2, 3-diaminophenol comonomer and acyl chloride is constructed on the surface of the porous base membrane through interfacial polymerization, and FeCo-g-C3N4 nanosheets are anchored in situ; the membrane can efficiently activate peroxymonosulfate (PMS) to generate free radicals under the nearly neutral condition, efficient interception and catalytic degradation of organic pollutants (such as antibiotics) are synchronously achieved, and heavy metal ions (such as Pb < 2 + > and Cd < 2 + >) are adsorbed through a functional monomer structure; the invention provides an interfacial polymerization preparation method of the membrane. The composite membrane breaks through the limitation of'only interception but not degradation 'of a traditional membrane, realizes integration of'separation-adsorption-degradation', can remarkably reduce the volume of concentrated water and reduce the toxicity of the concentrated water, and is suitable for advanced treatment of wastewater containing composite pollutants in the industries of pharmacy, printing and dyeing and the like.

The present invention discloses a sulfur-nitrogen co-doped graphene hollow nanosphere and its preparation and application, belonging to the technical field of graphene nanomaterials. During the preparation, a mixture of thiourea and zinc powder is first calcined under the protection of an inert gas, and then H2O and HCl are added to the calcined product and heated for reaction, followed by post-processing to obtain the target product. The resulting product is a sulfur-nitrogen co-doped graphene material, which presents a hollow spherical morphology. This material has a large specific surface area and pore volume, and both the nitrogen and sulfur doping amounts have reached a high level. It has been verified that the obtained high-sulfur-nitrogen co-doped graphene hollow nanospheres have unique graphite nitrogen-pyridine nitrogen-thiophene sulfur synergistic active sites, which have high atomic utilization and high stability, and exhibit the best performance of activating persulfate to degrade organic matter. It can continuously and rapidly separate organic pollutants in actual water bodies and exhibit excellent stability.

The invention discloses a method for removing organic pollutants in a water body by activating persulfate with an alkali-modified copper-iron bimetallic catalyst, which is characterized in that the alkali-modified copper-iron bimetallic catalyst is used as a catalyst for activating the persulfate and degrading the organic pollutants in the water body. Wherein the alkali modified copper-iron bimetallic catalyst comprises a copper-iron metal compound (CuFeO2) and oxygen vacancies loaded on the copper-iron metal compound. The catalyst disclosed by the invention has the advantages of large specific surface area, large number of active sites, high catalytic activity, good structural stability and the like, can construct a core mechanism degradation system based on a non-free radical pathway when being used for activating persulfate, can more quickly and thoroughly remove organic pollutants in water when being used for degrading the organic pollutants in the water, and has a good application prospect. The method has the advantages of simple process, convenience in operation, low cost, high practicability, wide application range, high treatment efficiency, good degradation effect, environment friendliness and the like, and is high in use value and good in application prospect.

A method for synchronously activating persulfate using "light-heat-FeS2 / dust-free cloth" and a use. Metal iron sulfide FeS2 is loaded to the surface of black dust-free cloth ALC in an ultrasonic dispersion manner to form a FeS2 / ALC integrated photo-thermal catalyst. Persulfate is activated by using Fe2+, FeS2 / ALC absorbs solar energy to heat and activate the persulfate, and sunlight directly activates the persulfate, so that the "light-heat-FeS2 / dust-free cloth integrates three activation effects for synchronously activating the persulfate, achieving efficient degradation of organic pollutants in water.

The invention belongs to the field of soil remediation, and particularly relates to a method for remediating organic contaminated soil through cooperation of low-temperature thermal desorption and low-dose persulfate, and the method comprises the steps that S1, soil investigation is conducted, and the remediation target range is determined; s2, determining the physicochemical properties of the organic pollutants detected in S1; s3, determining process parameters; s4, a heating well, an extraction well and an injection well are arranged; s5, starting the heating well, and running an in-situ low-temperature thermal desorption process; s6, persulfate is injected, and pollutants are degraded; and S7, pollutant removal effect detection. According to the method, through design of a process mode and process parameters and continuation of operation time, volatile organic pollutants in the soil are firstly removed by ingeniously utilizing relative low-temperature interval heating, meanwhile, organic matter active ingredients of the soil are inerted, then persulfate is activated by utilizing residual heat energy, and then non-volatile organic pollutants are removed; the physical-chemical repairing technology is efficiently coupled, and the repairing cost is reduced; the method is high in operability and high in removal efficiency.

The invention discloses a preparation method and application of an electrolytic manganese residue catalyst, electrolytic manganese residues are pyrolyzed under low-temperature and anaerobic conditions, then acid pickling, water washing and drying are performed to obtain the electrolytic manganese residue catalyst, and the electrolytic manganese residue catalyst can activate persulfate so as to efficiently degrade organic pollutants and effectively remove pollutants such as antibiotics and COD in water. And the degradation rate can reach 95% or above. The preparation method has the advantages of simplicity, low preparation energy consumption, easily available raw materials, high resource utilization rate and the like, and is suitable for large-scale popularization and application.

The invention relates to a method for removing heavy metal complexes in wastewater, which comprises the following steps: S1, preparing a PMS composite agent which is prepared by ball-milling the following raw materials in percentage by weight: 50-90% of persulfate, 5-30% of sulfite and 5-20% of pypocholoride; s2, the PMS composite agent obtained in the S1 is added into industrial wastewater containing a heavy metal complex, heavy metal in the heavy metal complex is Cu and one or more of Co, Cr, Ni, Pb and Zn, complex in the heavy metal complex is one or more of EDTA, NTA, citric acid, oxalic acid, tartaric acid and sorbic acid, the mixture is stirred and dissolved, alkali liquor is added to maintain the pH of the industrial wastewater to be 9.5-11.0, and the PMS composite agent is obtained after the reaction is completed. Carrying out Fenton-like oxidation complex breaking reaction, and carrying out post-treatment after the reaction is finished, so as to obtain the reclaimed water. According to the method, the purpose of removing the heavy metal complex in the wastewater by the in-situ activation of the persulfate is achieved under the condition of not additionally adding a catalyst or applying energy sources such as electricity, ultraviolet and the like.

The invention provides preparation of an S / N co-doped modified biochar composite material and application of the S / N co-doped modified biochar composite material in activated persulfate resource degradation and removal of antibiotics, belongs to the technical field of wastewater treatment, and aims to efficiently degrade and remove antibiotics in wastewater and avoid environmental risks of a metal catalyst at the same time. The method is a green, environment-friendly, economical and efficient water treatment method; the preparation method comprises the following specific steps: S1, mixing and grinding waste crop biomass and metal salt to prepare modified biochar; s2, mixing and grinding the modified charcoal and a sulfur-containing compound; s3, performing high-temperature pyrolysis on the ground mixture to obtain an S / N co-doped modified charcoal composite material, and using the S / N co-doped modified charcoal composite material as a persulfate catalyst to effectively degrade and remove tetracycline in polluted wastewater; the S / N co-doped modified biochar composite material prepared by the invention effectively solves the problem of secondary utilization of waste crops, mainly improves the degradation and removal efficiency of tetracycline and realizes resource conversion of tetracycline.

The invention relates to a wastewater treatment method, in particular to a capacitive deionization-oxidation coupling high-salt industrial wastewater treatment process, which comprises the following steps: firstly, carrying out micro-filtration to remove suspended matters and adjust the pH value, then carrying out low-voltage electro-adsorption desalination through a modified capacitive deionization unit, collecting electric energy released in a regeneration stage, converting the electric energy into electric energy of a catalytic oxidation unit through a converter, and carrying out high-salt industrial wastewater treatment. Desalted water enters a non-free radical catalytic oxidation unit, a UV-LED excitation catalyst activates persulfate, singlet oxygen is generated to degrade organic matter, an intelligent control system dynamically adjusts voltage, medicament and energy distribution according to the water inlet condition, finally, capacitive deionization regeneration liquid is subjected to multi-stage membrane concentration and crystallization, salt products are recycled, and waste water treatment and recycling are achieved.

The invention discloses an algae-based iron-carbon catalyst as well as a preparation method and application thereof, and relates to the technical field of new material research and development and sewage treatment. The preparation method comprises the following steps: mixing ferrocene, diatomite and a solvent to obtain a mixed solution; adding a hydrogen peroxide solution into the mixed solution, and then heating for reaction to obtain an intermediate; and roasting the intermediate to obtain the algae-based iron-carbon catalyst. According to the invention, ferrocene and diatomite are used as raw materials, and the high-performance algae-based iron-carbon catalyst is prepared through simple solvothermal reaction and roasting treatment. The obtained algae-based iron-carbon catalyst is stable in structure, high in activity and wide in applicable pH range in a persulfate oxidation system, and can be used for activating persulfate to degrade antibiotic pollutants in water.

The invention discloses a cobalt-based catalytic material for efficiently activating persulfate to degrade antibiotics and a preparation method of the cobalt-based catalytic material. The catalytic material is prepared by taking an H-Beta zeolite molecular sieve as a carrier, loading cobalt ions on the molecular sieve through an impregnation method and then carrying out high-temperature roasting treatment. The preparation method comprises the following steps: preparing a cobalt acetate tetrahydrate solution, adding an H-Beta zeolite molecular sieve into the solution to carry out ion exchange, and then carrying out drying and high-temperature roasting. The prepared catalytic material has highly dispersed cobalt active sites and excellent structural stability and catalytic activity. Compared with the prior art, the catalyst provided by the invention has the advantages of simple preparation process, lower cost, high catalytic efficiency, good stability, low cobalt ion dissolution rate, easiness in recovery and reuse and the like, and has a good practical application prospect.

The invention belongs to the technical field of antibiotic pollutant degradation, and discloses a method for degrading antibiotic pollutants by using boron-carbon co-regulated nanoscale zero-valent iron as an activating agent, which comprises the following steps: step 1, synthesizing carbon-coated nanoscale zero-valent iron, marked as Fe0-C, through a hydrothermal method and a carbothermic method; and step 2, mixing the Fe < 0 >-C obtained in the step 1 with crystal boron, adding the mixture into sewage containing antibiotic pollutants, and then adding persulfate as an oxidizing agent to degrade the antibiotic pollutants. A boron-carbon co-regulation method is adopted to realize the passivation resistance of the nano zero-valent iron in the whole process from preparation, storage to application, and the nano zero-valent iron is applied to the process of activating persulfate to degrade tetracycline.

The invention provides a ZIF-67 (at) Co / HPLFM composite material and a preparation method and application of the ZIF-67 (at) Co / HPLFM composite material, and the preparation method comprises the following steps: providing a hollow porous straw lignin fiber membrane (HPLFM); cobalt salt is dissolved in absolute ethyl alcohol, the hollow porous straw lignin fiber membrane is taken and placed in the mixed solution, absolute ethyl alcohol dissolved with 2-methylimidazole is dropwise added into the mixed solution after oscillation, and oscillation continues for a period of time; taking out the hollow porous straw lignin fiber membrane, washing, and freeze-drying to obtain a precursor material; and carrying out high-temperature calcination on the precursor material to obtain the ZIF-67 (at) Co / HPLFM composite material. The high surface activity and the porous hollow structure of the hollow porous straw lignin fiber membrane are utilized, ZIF-67 is loaded on HPLFM, the ZIF-67-coated Co / HPLFM composite material is obtained through further treatment, and the material has high specific surface area and excellent adsorption performance and has good application prospects in organic pollutant degradation by activating peroxymonosulfate.

The invention provides a method for degrading antibiotic wastewater based on an SR-AOPs mediated Fenton system, which comprises the following steps: putting a Fenton reaction Fe3O4-MXene catalytic material into antibiotic wastewater to construct a catalytic system, and activating persulfate to catalytically degrade the antibiotic wastewater for 0-30 minutes; the addition amount of the Fenton reaction Fe3O4-MXene catalytic material is 100-200 mg / L. A catalytic system which does not need to be additionally provided with H2O2 and an iron source and can produce H2O2 in situ is constructed, mixed reactive oxygen species (ROS) generated in the catalytic system is used for degrading antibiotic wastewater, the oxidation efficiency is high, the cost is low, and the stability is good; according to the catalytic material, Fe3O4 nanoparticles are integrated to interlayer and heterogeneous surfaces of MXene to form a double-catalytic-center structure, a Fe3O4-MXene heterostructure promotes sustainable redox cycle of Fe < 2 + > / Fe < 3 + > through electron transfer, O2 is reduced to generate H2O2, PMS is synergistically activated to generate hydroxyl radicals (OH) to drive efficient Fenton reaction, the preparation method is simple, the stability is good after multiple times of cycle use, and the catalytic material is suitable for industrial production. And secondary pollution can be avoided through magnetic recovery.

The invention discloses an iron atom loaded molybdenum disulfide catalyst and a preparation method and application thereof, and the preparation method of the catalyst comprises the following steps: preparing molybdenum disulfide nano flower balls, dispersing the molybdenum disulfide nano flower balls in water, adding a ferric salt and a reducing agent, and carrying out a hydrothermal reaction to obtain the iron atom loaded molybdenum disulfide catalyst. In the preparation method, under the combined action of the 1T-phase molybdenum disulfide, the ferric iron and the reducing agent, the iron atom loaded molybdenum disulfide catalyst with many reaction active sites, good stability and high catalytic activity can be prepared, and when the iron atom loaded molybdenum disulfide catalyst is used for activating persulfate, efficient activation of persulfate can be achieved; furthermore, a large amount of. SO4 <-> and singlet oxygen can be rapidly generated by utilizing the persulfate to realize efficient degradation of organic pollutants. Meanwhile, the preparation method disclosed by the invention also has the advantages of simple process, high preparation efficiency, easily controlled preparation conditions, safe preparation process and the like, is suitable for large-scale preparation and is convenient for industrial application.

The invention discloses a method for removing grease in neodymium-iron-boron oil sludge waste by self-activated persulfate, which comprises the following specific steps: adding neodymium-iron-boron oil sludge waste into a stirring device, adjusting the concentration, pH value and temperature of slurry, then adding persulfate into the slurry, stirring for a certain time, and then dehydrating to obtain a qualified neodymium-iron-boron product. According to the method, hydroxyl free radicals and sulfate free radicals are generated through neodymium iron boron self-activation persulfate, grease substances in the neodymium iron boron oil sludge waste can be degraded into CO2 and H2O, rapid analysis of the grease substances from the surfaces of neodymium iron boron particles is achieved, and efficient deoiling can be achieved after solid-liquid separation. The method has the characteristics of simplicity in operation, high deoiling efficiency and wide application range.

The invention belongs to the technical field of wastewater treatment and energy recovery, and particularly relates to a self-driven electro-catalysis system for activating persulfate to degrade antibiotics and application of the self-driven electro-catalysis system. The invention provides a self-driven electro-catalysis system for activating persulfate to degrade antibiotics. The self-driven electro-catalysis system comprises a reaction unit, an electrolyte and an external circuit wire, the reaction unit comprises a cobalt sheet anode and a carbon rod cathode; the external circuit lead is used for connecting the cobalt sheet anode and the carbon rod cathode; and an electrolyte in the electrolyte solution comprises Na2SO4. According to the self-driven electro-catalysis system, in a wastewater solution containing antibiotics, persulfate and supporting electrolyte, an external power source is not needed, spontaneous electron transmission is formed through the potential difference of the cobalt sheet anode and the carbon rod cathode, and self-driven PMS activation and antibiotic pollutant degradation are achieved.

The application discloses a method for treating organic pollutant wastewater by using manganese monoxide-graphite diacetylene nano-confined catalytic material to activate persulfate, the method is to degrade and treat organic pollutant wastewater by using manganese monoxide-graphite diacetylene nano-confined catalytic material as a catalyst for activating persulfate, and the nano-confined catalytic material comprises graphite diacetylene nanosheets, and manganese monoxide nanoparticles are confined between the layered structures of the graphite diacetylene nanosheets.The method has the advantages of rich active sites, fast electron transfer and stable structure, so that the catalytic degradation system is not only high in efficiency, but also strong in adaptability, and shows good degradation effect on various organic pollutants, and has the advantages of simple process, convenient operation, high treatment efficiency, good removal effect, strong adaptability, green environmental protection and the like, and has important promoting significance for deep purification of organic pollutant wastewater.