228 results about "Persulfate" patented technology

The invention discloses a nickel-containing etching wastewater treatment process, which belongs to the technical field of environmental protection, and comprises a raw water regulating tank, a pH pre-regulating tank, a heterogeneous catalytic oxidation tower, a neutralization coagulation tank, an inclined tube sedimentation tank and a clean water tank which are connected in sequence. According to the process, under the neutral condition, a catalyst loaded with cobalt manganese oxide is used for activating sodium hydrogen persulfate, high-activity sulfate free radicals are generated, a Ni-EDTA complex structure is fractured in a targeted mode, free nickel ions are released in situ, organic ligands are synchronously mineralized, and the adding amount of sodium hydrogen persulfate is dynamically adjusted through a clean water pool closed-loop control system; and high-purity nickel hydroxide precipitate is generated through alkaline precipitation and coagulation, so that efficient solid-liquid separation is realized. The treatment process disclosed by the invention is compact in flow and stable in operation, effectively solves the problems of difficult complex breaking, low nickel removal efficiency, high sludge toxicity, difficult resource recovery and the like when the EDTA complex nickel wastewater is treated by a traditional method, realizes closed-loop recovery of nickel resources, and has the remarkable advantages of low cost, high efficiency and environmental friendliness.

The invention relates to the technical field of solid waste treatment and recycling, and discloses a waste incineration fly ash geopolymer composite material and a preparation method thereof, and the composite material is prepared from waste incineration fly ash, apatite minerals, zero-valent iron powder, persulfate and an alkali activator. The preparation method comprises the following steps: mixing the waste incineration fly ash, apatite minerals, zero-valent iron powder and persulfate to obtain composite powder; performing frequency conversion mechanochemical synergistic activation on the composite powder, wherein the activation process comprises a low-temperature activation stage and a high-energy pulse activation stage; and finally, mixing the activated powder with an alkali activator, pouring, molding and curing. According to the method, the reduction reaction and the oxidation reaction are driven step by step in the same system by regulating and controlling the mechanical energy input time sequence, the compatibility problem of a reducing agent and an oxidizing agent is solved, different types of persistent organic pollutants are synergistically degraded, meanwhile, heavy metal is stabilized, and the treatment effect is good. And the fly ash is recycled to prepare a geopolymer material with mechanical properties.

The invention provides an efficient chloramphenicol degradation method based on Co-Cu-carbon composite nano-catalyst activated peroxymonosulfate, which comprises the following steps: regulating the Co / Cu molar ratio in a bimetal organic framework precursor, and performing pyrolysis to prepare the Co-Cu-carbon composite catalyst with an optimized pore structure, graphitization degree and metal dispersity; peroxymonosulfate is activated by utilizing the synergistic effect of Co / Co and Cu / Cu redox pairs to generate sulfate free radicals, hydroxyl free radicals, singlet oxygen and superoxide free radicals, and direct oxidative degradation of chloramphenicol is promoted by taking a catalyst as an electron transfer bridge; the method realizes rapid and efficient removal of chloramphenicol, high mineralization rate, excellent cycle stability and strong anti-interference capability, and solves the technical problems of low removal efficiency, high cost and easy secondary pollution in the prior art.

The invention provides an oxygen vacancy defect carbon nitride anchored iron atom cluster catalyst and a preparation method and application thereof, and belongs to the technical field of catalysts. Iron atoms are anchored in a carbon nitride (Ov-C3N4) structure containing oxygen vacancy defects in a cluster form, and Fe-Ov-C defect bonds are formed between the oxygen vacancy defects in C3N4 and iron atom clusters to stabilize the iron atom clusters, so that the problem of thermodynamic instability of the catalyst is solved while higher atom utilization efficiency is obtained; the Fe-Ov-C defect bond atoms can reasonably regulate and control the electronic structure of the center of an iron cluster d band, so that the catalytic activity and the cycling stability are greatly enhanced; besides, iron atom clusters and persulfate act to cause O-O bond breakage, non-free radical singlet oxygen is formed, and the problem that the catalytic efficiency is sharply reduced due to free radical annihilation in a complex water environment can be effectively solved.

The invention discloses a preparation method of an iron-manganese bimetallic catalytic material by using copper slag. The preparation method comprises two steps of pretreating the copper slag and preparing the iron-manganese bimetallic catalytic material. The iron-manganese bimetallic catalytic material prepared by the method belongs to a porous material, is rich in pores and large in specific surface area, is rich in Fe < 3 + >, Mn < 3 + >, Mn < 4 + > and other active sites on the surface, has the advantages of high catalytic activity, good stability and environmental friendliness, and realizes reduction and high-value utilization of the copper slag. In addition, the prepared iron-manganese bimetallic catalytic material can be used for catalyzing persulfate to form an advanced oxidation system, and is suitable for degradation treatment of organic wastewater such as printing and dyeing wastewater, pharmaceutical wastewater, food wastewater and raffinate.

The invention discloses a biomass carbon loaded manganese dioxide catalyst as well as a preparation method and application thereof. The biomass carbon loaded manganese dioxide catalyst comprises a carrier and MnO2 loaded on the surface of the carrier, and the carrier is carbonized biomass obtained by performing alkali treatment and hydrogen peroxide treatment on biomass and then carbonizing the biomass in an inert atmosphere. The supported catalyst prepared by the method has proper valence and morphology, a MnO2 mixed phase appears, more oxygen vacancies are generated, generation of free radicals in the activation process of peroxymonosulfate (PMS) is facilitated, PMS can be effectively activated to remove organic pollutants, and the activation efficiency of MnO2 on PMS and the operation stability of MnO2 in a packed column are greatly improved. Compared with a traditional method for adjusting the oxygen vacancy of MnO2, the method for loading the biochar is relatively controllable, simple in mode and low in cost.

The invention provides iron-manganese composite oxide modified biochar (FM-SBC) as well as a preparation method and application thereof, and relates to the technical field of modified biochar. The method comprises the following steps: drying, grinding, modifying, drying and pyrolyzing excess sludge of a secondary sedimentation tank of an urban sewage treatment plant, and modifying the excess sludge by using an iron-manganese composite oxide to obtain the iron-manganese composite oxide modified biochar. The iron-manganese composite oxide modified biochar can be used as an efficient catalyst of persulfate (PS), provides technical support for treatment of refractory organic wastewater by enhancing the catalytic effect and enhancing efficient degradation of refractory organic pollutants such as azo dyes, and is of great significance to sustainable development of the environment.

The present application relates to a kind of methods for removing heavy metal complex in wastewater, comprising the following steps, S1 configuration PMS composite reagent, the PMS composite reagent is made by including the following weight percentage of raw material ball milling, persulfate 50~90%, sulfite 5~30%, hypochlorite 5~20%;S2 in the heavy metal complex-containing industrial wastewater join the PMS composite reagent obtained in the S1, heavy metal in heavy metal complex is Cu, and one or several of Co, Cr, Ni, Pb and Zn, complex in heavy metal complex is one or several of EDTA, NTA, citric acid, oxalic acid, tartaric acid, sorbic acid, stirring is dissolved, and lye is added to maintain the pH of industrial wastewater to 9.5~11.0, and carries out fenton-like oxidation and breaks the complex reaction, after reaction, aftertreatment is obtained, and the regenerated water is obtained.The present application achieves the purpose of removing heavy metal complex in wastewater by the method of in-situ activation of persulfate without additional catalyst or the application of electricity, ultraviolet and other energy.

The invention discloses a biomass doped incineration fly ash composite catalyst as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing incineration fly ash and corncob biomass, adding an alkaline solution, stirring, filtering, washing to be neutral, drying, grinding and screening; and transferring the screened composite material into a tubular furnace for pyrolysis to obtain the biomass doped incineration fly ash composite catalyst. According to the prepared biomass-doped incineration fly ash composite catalyst, due to the introduction of the charcoal, the catalytic performance of the catalyst is improved, and meanwhile leaching of metal ions is reduced. In a persulfate system, the tetracycline removal agent shows relatively good anti-interference capability on tetracycline removal, keeps a removal rate of 90% or above when the pH value is in an alkaline range, and shows remarkable anti-interference capability on Cl <-> and other coexisting ions. In addition, a leaching experiment shows that the heavy metal leaching concentration of the catalyst in a reaction solution is far lower than the national emission standard.

The application discloses a preparation method of a cobalt-based biochar composite material and application of the cobalt-based biochar composite material in persulfate oxidation, and comprises the following operation steps: a proper amount of sodium alginate is weighed, calcined, activated and dried to obtain a derived original biochar SA; after the SA is used as an adsorbent to adsorb cobalt ions, drying is performed to obtain a cobalt-containing biochar CoSA; the CoSA is uniformly ground with urea, pyrolysis is performed, washing, filtering and drying are performed, and vacuum drying is performed to obtain a cobalt-based biochar composite material CoNBC based on sodium alginate; and the activation method is that the SA is mixed with potassium hydroxide, ground in a jade mortar for 5-30 min, and then activated in ultrapure water for 1-8 h.The raw material used in the application is environment-friendly, the preparation process is simple, the cobalt-based biochar composite material obtained has excellent catalytic capacity for persulfate, can effectively control the precipitation of transition metals, reduces pollution, and greatly improves the utilization rate of metal elements.

The invention provides a low-consumption wet smelting process for flotation zinc oxide concentrate, which comprises the steps of pretreatment, low-acid leaching and post-treatment, and specifically comprises the following steps: adjusting the mass concentration of the raw material flotation zinc oxide concentrate to be 15-45%, adding an ultrasonic-synergistic stripping agent, and stirring uniformly; reacting for 5-45 minutes under an ultrasonic stirring condition to obtain ore pulp a; the ultrasonic-synergistic stripping agent is prepared from alkylbenzene sulfonate, octylphenol polyoxyethylene ether and persulfate; a decarburizing agent and a particle enhancer are added into the ore pulp a, the pH value is adjusted to 8.5-9.5, fine air is introduced for 5-10 min, and zinc oxide concentrate b is obtained through solid-liquid separation; waste electrolyte and / or waste acid are / is added into the zinc oxide concentrate b for a leaching reaction, and leaching liquid c is obtained; and the leaching solution c is subjected to neutralization iron removal and zinc powder replacement impurity removal, and then a zinc ingot is obtained.

The invention discloses a method for preparing porous activated carbon based on pulse electrochemical activation, the porous activated carbon and application, and the method comprises the following steps: preparing a working electrode plate from carbon powder, and placing the working electrode plate in an electrolyte for pulse electrochemical square wave circulation treatment, wherein the electrolyte is an aqueous solution containing sulfuric acid, persulfate, sulfate and a cationic surfactant, stripping, cleaning and drying to obtain the porous activated carbon. According to the preparation method, the carbon powder is prepared into the working electrode plate, and the working electrode plate is subjected to pulse electrochemical square wave circulation treatment in the electrolyte containing the sulfuric acid, the persulfate, the sulfate and the cationic surface active agent, so that the porous activated carbon with large specific surface area, high electro-adsorption capacity and good conductivity can be prepared; when being used as a raw material for preparing a capacitive deionization electrode, the composite material shows good conductivity, high desalination capacity and high desalination rate, can be widely used for electro-adsorption desalination, and is high in use value and good in application prospect.

The invention provides a nickel-manganese oxide composite material, a preparation method and application, and belongs to the technical field of environmental functional materials and water pollution control, and the preparation method comprises the following steps: adding terephthalic acid, nickel nitrate hexahydrate and manganese chloride tetrahydrate into N, N-dimethylformamide, stirring and mixing, dropwise adding a NaOH solution, transferring into a high-pressure reaction kettle, carrying out a hydrothermal reaction, filtering, washing, and drying to obtain the nickel-manganese oxide composite material. After the reaction is completed, centrifugally washing a mixture in the inner container of the high-pressure reaction kettle, and drying in vacuum to obtain a NiMn-MOF material; and placing the NiMn-MOF in a porcelain boat, calcining, and naturally cooling to room temperature to obtain the nickel manganese oxide composite material. The nickel manganese oxide material prepared by the method shows excellent catalytic activation performance on persulfate, and can realize efficient and rapid degradation of bisphenol A.

The application discloses a kind of iron monatomic catalysts with controllable sulfur content and coordination mode and its preparation method and application, nitrogen-allyl thiourea and thiocyanic acid are respectively used as sulfur-containing organic ligand and sulfur-containing supramolecular precursor, chelate with iron ion, and use the hydrogen bond interaction between melamine and cyanuric acid, complete supramolecular self-assembly process;And high-temperature pyrolysis is carried out under argon atmosphere, and iron monatomic catalysts with controllable sulfur content and coordination mode can be prepared.The application also includes the application of iron monatomic catalysts with controllable sulfur content and coordination mode in removing organic pollutants such as p-chlorophenol and antibiotics in water.Iron monatomic catalysts with controllable sulfur content and coordination mode can improve the activation efficiency of persulfate, the content and selectivity of active oxygen species generated, and achieve efficient degradation of p-chlorophenol under different anion-cation, humic acid and pH conditions, while having good recycling performance.

This disclosure relates to a method for producing composite particles. The method comprises contacting catalyst particles, an oxidizing agent, and a plurality of monomers. The oxidizing agent is a peroxide, a persulfate, or ozone, and the catalyst particles are or comprise a material having Fenton or Fenton-like catalytic activity. The catalyst particles catalyze the disproportionation of the oxidizing agent to produce oxygen-radical species, which then initiate a polymerization reaction, thereby polymerizing the plurality of monomers, thereby forming a polymer shell around the catalyst particles. The present invention extends to composite particles produced by the method, an apparatus containing the composite particles, and the use thereof.

The invention discloses a persulfate oxidation-based fixed bed catalysis high-salt organic wastewater treatment device and a persulfate oxidation-based fixed bed catalysis high-salt organic wastewater treatment process. The fixed bed catalysis high-salt organic wastewater treatment device comprises a pretreatment system, a liquid-solid catalytic reaction system, a reverse osmosis system and a catalyst regeneration and treatment system, and the liquid-solid catalytic reaction system comprises a primary filtration and adsorption unit, a primary catalytic oxidation unit, a secondary catalytic oxidation unit and a secondary adsorption and filtration unit. A baffle plate is arranged between every two units, so that the turbulence of wastewater is enhanced, and the liquid-solid mass transfer efficiency is improved. The treatment device disclosed by the invention has the advantages of continuous operation, salt interference resistance, low operation cost and the like, can realize efficient removal of the high-salt organic wastewater, and is suitable for treatment and recycling of the high-salt organic wastewater in the industries of coal chemical industry, pharmacy, printing and dyeing and the like.

The invention belongs to the technical field of antibiotic mushroom dreg resourceful treatment, and particularly relates to a method for cooperatively treating antibiotic mushroom dregs based on hydrothermal-pyrolysis and advanced oxidation. The method comprises the following steps: carrying out hydrothermal pretreatment on antibiotic mushroom dregs at 120-200 DEG C, and carrying out solid-liquid separation to obtain hydrothermal solid residues and hydrothermal bacterium liquid; the hydrothermal solid residues are subjected to a pyrolytic reaction at the temperature of 300-550 DEG C, and gaseous combustible gas, liquid bio-oil and solid biochar generated by the pyrolytic reaction are collected respectively; the method comprises the following steps: mixing solid charcoal with a fluorine element precursor, and carrying out heat treatment at 600-800 DEG C to obtain a fluorine-doped charcoal catalyst; and adding a persulfate oxidant and a fluorine-doped charcoal catalyst into the hydrothermal bacterial liquid for catalytic oxidation degradation treatment to obtain a harmless small-molecule carbon source solution. The method systematically solves the problem of treatment of high-water-content and high-toxicity organic waste residues, and synchronously achieves the three targets of reduction, harmlessness and recycling.

The invention belongs to the technical field of mineral processing and metallurgical engineering, and particularly relates to a method for extracting lithium from spodumene by acid leaching through microwave and ultrasonic wave synergistic enhancement. The method comprises the following steps: taking beta-spodumene as a raw material, grinding the beta-spodumene, mixing the grinded beta-spodumene with concentrated sulfuric acid and phosphoric acid, carrying out rapid sulfating roasting under microwave heating, placing the obtained roasted clinker in a persulfate solution, and carrying out short-time water leaching under the assistance of ultrasonic waves to realize efficient leaching of lithium. Wherein the dissolution of impurities such as iron and aluminum can be selectively inhibited by adding phosphoric acid, and the mass transfer barrier of lithium ion dissolution can be effectively destroyed by the cooperation of persulfate and the ultrasonic cavitation effect. According to the method, water leaching can be completed within 2-5 minutes, the lithium leaching rate exceeds 97%, the impurity content is low, energy consumption and acid consumption are small, and the method is suitable for continuous clean production.

The present application relates to sewage treatment technical field, specifically to a kind of chemical wastewater desalination integrated processing method.The present application overcomes the problem of low resource utilization efficiency of chemical wastewater desalination in prior art;The present application first synthesizes three-dimensional catalytic aerogel microspheres, which are loaded in a fixed bed to target adsorption and catalytic chain scission of macromolecular polymers in high-salinity wastewater with persulfate;Subsequently, a salt-tolerant membrane bioreactor is introduced to form small-molecule organic compounds through deep metabolism;The effluent is sequentially subjected to target complexation and precipitation of heavy metals using modified chitosan and amphoteric polyacrylamide, pre-implantation of polyepoxysuccinic acid scale inhibitor, and finally subjected to nanofiltration and reverse osmosis systems, freeze crystallization and MVR evaporation to extract high-purity sodium sulfate and sodium chloride.The present application effectively solves the problem of membrane fouling caused by heavy metal leakage and organic matter residue in traditional process, and realizes the deep purification of chemical wastewater and the high-value resource recovery of salt.

The application discloses granular persulfate slow-release material and a preparation method and application thereof, and belongs to the technical field of groundwater remediation. The granular persulfate slow-release material has a core-shell structure; the core-shell structure comprises an outer shell and an inner core, wherein the outer shell is composed of stearic acid, and the inner core is composed of persulfate and stearic acid. The preparation method is as follows: after the stearic acid is melted and mixed with the persulfate, the mixture is obtained after stirring and cooling; the mixture is ground and sieved, and then added into a granulator, and the melted stearic acid is added twice for granulation, so that the granular persulfate slow-release material is obtained. The application overcomes the problems of the prior art, such as the fast consumption of persulfate and the reverse diffusion of pollutants, realizes the long-acting and stable release of the persulfate, and further effectively and durably performs in-situ chemical oxidation remediation on the groundwater.

The present invention relates to a functional composition for activating plant root respiration in soil and a method using the same. The present invention is a technology related to agricultural methods, in which an oxygen generating catalyst composition is prepared by dissolving an inorganic substance selected from the group consisting of aluminum, titanium, chromium, manganese, iron, cobalt, nickel, copper, zinc, tungsten, and a salt form selected from the group consisting of sulfate, chloride, nitrate, acetate, phosphate, fluoride, and a chelating agent, to a concentration of 0.05 to 25 wt% in stored water, and an oxygen generating composition is prepared by dissolving hydrogen peroxide or persulfate to a concentration of 50 wt% or less in stored water, and the A solution and the B solution are used in a C method in which the A solution is diluted to a concentration of 10 ppm to 900 ppm and sprayed, and then the B solution is diluted to a concentration of 25 ppm to 5,000 ppm and sprayed on a crop cultivation site, or in a D method in which the A solution is diluted to a concentration of 10 ppm to 900 ppm and stored in a container (A-1) equipped with a drain line and a discharge device, and the B solution is diluted to a concentration of 25 ppm to 5,000 ppm and stored in a container (B-1) equipped with a drain line and a discharge device, according to the crop cultivation environment, thereby achieving an oxygen agricultural method for crops to achieve high yield cultivation.

The present application belongs to the technical field of wastewater treatment, and particularly relates to a method for treating organic phosphonic acid wastewater by using a supported copper monatomic catalyst, wherein persulfate and the supported copper monatomic catalyst are added into the organic phosphonic acid wastewater to degrade the organic phosphonic acid; the supported copper monatomic catalyst is a metal oxide loaded with copper monatomic atoms, wherein the loading amount of the copper monatomic atoms is 1-10 wt% of the total weight of the catalyst. Compared with the prior art, the present application solves the problem that metal ions cannot be recovered in the advanced oxidation process of the prior art in the treatment of organic phosphonic acid wastewater. The present application provides an advanced oxidation technology for organic phosphonic acid wastewater, realizes efficient and deep degradation of the organic phosphonic acid in the wastewater, can adapt to wastewater in a wide pH range, and has strong anti-interference and high selectivity after multiple degradation, with a very low metal leaching content (0.0015 mg / L).

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

The present application belongs to the technical field of wastewater treatment, and particularly relates to a method for removing total nitrogen in wastewater. Iron salt and carbon material containing hydroxyl and carbonyl are added into water, and then potassium borohydride is added, and the obtained mixture is freeze-dried under argon protection atmosphere to obtain iron-carbon filler; the iron-carbon filler is added into wastewater, the wastewater is adjusted to be weakly acidic, and stirring reaction is carried out for 0.5-1.5 h to obtain reduced effluent; persulfate is added into the reduced effluent, the wastewater is adjusted to be alkaline, and stirring reaction is carried out for 0.5-1.5 h, and then solid-liquid separation is carried out, and the obtained supernatant is treated effluent. The present application can remove total nitrogen in wastewater only by using iron-carbon filler and persulfate at normal temperature and pressure, and has the advantages of fast conversion rate, strong anti-interference ability, no secondary pollution and the like compared with traditional chemical oxidation-reduction technology; the reaction has wide original sources, low price, simple operation, and is environment-friendly, and has obvious economic and environmental benefits.

The invention discloses a method for treating aquaculture wastewater based on a persulfate advanced oxidation technology, which comprises the following steps: (1) putting prepared secondary modified zeolite into a polycarboxylate superplasticizer, stirring, then adding a solution containing Fe < 2 + > and / or Fe < 3 + >, carrying out ultrasonic treatment, then separating out a solid product, and calcining in a protective atmosphere to obtain a modified zeolite precursor; and then cooling to room temperature to obtain the three-stage modified zeolite. And (2) adding the mixture into alkali liquor for heating treatment, then mixing the obtained solid product with a calcium nitrate solution for hydrothermal reaction, and then washing and drying the obtained solid product to obtain the heterogeneous catalyst. And (3) adding persulfate and a heterogeneous catalyst into the breeding wastewater for wastewater treatment. Heterogeneous catalysis is adopted to promote persulfate to release free radicals, so that the problem of waste caused by difficulty in recycling a catalyst is solved, and the problem of secondary pollution of wastewater caused by the catalyst is favorably avoided.

The invention discloses a preparation method and application of a carbon-loaded copper-cobalt MOF nanosheet, and relates to the field of environment-friendly materials, the material is obtained by carbonizing a copper-cobalt bimetallic MOF two-dimensional nanosheet precursor and is a two-dimensional sheet-shaped carbon material distributed with copper and cobalt bimetallic species, the width-to-thickness ratio is larger than 40, and the thickness is smaller than 10 nm. The preparation method comprises the following steps: preparing a solution A of copper salt and cobalt salt and a solution B of terephthalic acid dissolved in DMF; mixing the solution A and the solution B, adding triethylamine, stirring and reacting, centrifuging, washing and drying to obtain a precursor; and finally carbonizing under a protective atmosphere. The material can be used for treating organic pollutant wastewater such as antibiotics and the like, and is combined with oxidants such as persulfate and the like to realize efficient catalytic degradation of pollutants. The material disclosed by the invention has high catalytic activity, excellent stability and recycling performance.

This invention discloses a method for preparing organic sulfates, comprising the following steps: using persulfate as the sulfate source, and achieving the functional group transformation of a free radical precursor compound through the free radical anion of the sulfate ion, thereby preparing the organic sulfate. This invention uses persulfate as the source and, through a free radical addition mechanism, acts on the free radical precursor substrate. Persulfate, as a sulfate free radical anion, participates in the functional group transformation of the organic compound, resulting in the efficient synthesis of organic sulfates.

The utility model discloses a novel industrial sewage PDS strong oxidation treatment device, and relates to the technical field of sewage treatment equipment, in particular to a novel industrial sewage PDS strong oxidation treatment device which comprises a filter box, an oxidation box and a settling box which are communicated with one another in sequence, the sewage in the oxidation tank is stirred through the stirring part; a persulfate solution is contained in a persulfate solution box, and the persulfate solution is conveyed into an oxidation box through a flow dividing pipe, so that the persulfate solution is in contact with sewage; the stirring part drives the flow dividing pipe to lift and move in the oxidation box while stirring the sewage, namely, the flow dividing pipe lifts and moves in the sewage, so that a persulfate solution is more comprehensively contacted and mixed with the sewage, and the mixing effect of the persulfate solution and the sewage is greatly improved; the persulfate solution is subjected to an oxidation-reduction reaction, a catalytic oxidation reaction and the like in the sewage, so that the aim of purifying the sewage is fulfilled.

A polymer comprising pyridinium salt moieties, wherein the polymer has the following structure: In this structure, R1 and R6 are each N. At least a portion of R2 and R7 groups in the polymer are each negatively charged counterions selected from the group consisting of carboxylates, nitrates, nitrites, azides, metasilicates, tetraborate, perborates, boronates, oxalatob orates, metaborates, phosphorus-containing anions, halides, sulfates, SO4 -2, HSO4 -1, thiosulfate, dithionite, metabisulfite, persulfate, methanesulfonate, dioctyl sulfosuccinate, 3-sulfopropyl ethoxylate laurylphenyl ether, and combinations thereof. R3, R4, R8, R9, R11, R13, R14, R15, and R16 are each selected from the group consisting of H and groups including one or more carbon atoms. R5 and R10 are any group including one or more carbon atoms. The n is an integer from 2 to about 100,000.

The application discloses a self-adapting hydrogel coupling agent and a preparation method and application thereof, and belongs to the field of medical devices, and particularly relates to a preparation method of a self-adapting hydrogel coupling agent; the preparation method comprises the following steps: under the conditions of light avoidance and sterility, main monomers, functional monomers, a molecular weight regulator and reinforcing fillers are dissolved in sterilized deionized water, and then free radical polymerization is carried out under the action of a persulfate solution and tetramethylethylenediamine, and after dialysis and sterilization treatment, the self-adapting hydrogel coupling agent is obtained. The self-adapting hydrogel coupling agent prepared by the application eliminates tissue deformation caused by probe pressurization, significantly improves the measurement accuracy of an actual distance of a target in an operation by ultrasonic waves, and is good in biocompatibility, can be sterilized, is convenient to operate, and is suitable for open or endoscopic operation wounds.