62 results about "Potassium ferrate" patented technology

The present invention relates to the technical field of nanopowder preparation, and discloses a method for preparing a nitrogen-doped biochar-loaded iron nitride composite material. The process is as follows: (1) potassium ferrate, urea, and waste tea powder are ground and mixed in proportion to obtain a first mixture; (2) the first mixture is reacted in a temperature range of 50-70°C to obtain a second mixture; (3) the second mixture is reacted in a temperature range of 600-800°C for 1-3 hours, and then cooled to room temperature to obtain a third mixture; (4) the third mixture is washed and dried to obtain a nitrogen-doped biochar-loaded iron nitride composite material. Compared with the existing preparation process, the beneficial effect of the present invention is that the operation steps only include grinding, stirring, heating, etc., the operation is simpler, the overall process only involves one pyrolysis, the energy consumption is lower, and the toxic gas ammonia is not used, and the operation is safer. The material can degrade trichloroethylene without an anaerobic environment and can be used for the remediation of organochlorine-contaminated groundwater environment.

The utility model relates to the technical field of water treatment equipment, and particularly discloses a potassium ferrate powder uniform feeding device which comprises a chemical feeding hopper, a detachable upper cover is arranged at the upper end of the chemical feeding hopper, a chemical feeding port and a first motor are arranged at the top of the upper cover, a first sealing cover is arranged on the chemical feeding port, and a second sealing cover is arranged on the first sealing cover. A stirring shaft located in the dosing hopper is connected to an output shaft of the first motor, a stirring rod is arranged on the side wall of the stirring shaft, a screen fixed to the dosing hopper is arranged below the stirring rod, a mounting cavity and a discharging channel communicated with the interior of the dosing hopper are arranged at the bottom of the dosing hopper, and a second motor and a vibration motor are arranged in the mounting cavity. A chemical feeding wheel is arranged in the discharging channel, an output shaft of the second motor is connected with the chemical feeding wheel, and a plurality of chemical grooves for containing potassium ferrate powder are evenly formed in the side wall of the chemical feeding wheel; according to the potassium ferrate powder adding device, quantitative and uniform adding of potassium ferrate powder is achieved, and the situation that all the potassium ferrate powder is directly scattered into sewage at a time, and consequently chemical waste is caused is avoided.

The invention relates to the technical field of wastewater treatment, and discloses a method for treating low-concentration fluorine-containing organic wastewater based on advanced oxidation-magnetic coagulation precipitation, which comprises the following steps: firstly, adding potassium ferrate into wastewater and stirring to promote the potassium ferrate to decompose to generate hydroxyl free radicals (. OH), oxidizing and degrading organic matters in the wastewater, and removing the organic matters in the wastewater; then adding a saturated sodium sulfite solution to quench the residual oxidant; and then adjusting the pH value of the wastewater, adding polyaluminum chloride, modified imidazoline and Fe3O4, stirring, standing, settling, and separating the precipitate. Polyaluminum chloride (PAC) is dissolved in water to generate high polymers such as [Al (OH) (H2O) 5] < 2 + >, [Al8 (OH) 20 (H2O) x] < 4 + > and the like, the high polymers and F <-> form a complex through a hydroxyl bridging effect, and Al-F precipitate (such as AlF3. 3H2O) is further generated. The low-concentration fluorine-containing organic wastewater is efficiently purified through the oxidation-magnetic coagulation synergistic effect.

The invention provides a method for treating comprehensive wastewater by combining potassium ferrate with oxidation, and belongs to the field of industrial wastewater treatment. The method comprises three stages of wastewater pretreatment and treatment system starting, catalytic oxidation, solid-liquid separation and material regeneration, a Fe3O4 (at) MIP-Azo (at) K2FeO4: Azo-SO3 nanosheet material is combined with potassium hydrogen peroxymonosulfate, a sequencing batch reactor is used for catalytic oxidation treatment of comprehensive wastewater, and the Fe3O4 (at) MIP-Azo (at) K2FeO4: Azo-SO3 nanosheet is recycled after being separated and regenerated. According to the invention, the balance of selective adsorption and broad-spectrum oxidation is realized, the Fe3O4 (at) MIP-Azo (at) K2FeO4: Azo-SO3 nanosheets are used for targeted enrichment of specific pollutants, potassium hydrogen peroxymonosulfate and K2FeO4 are used for full-spectrum oxidation, full-chain treatment of comprehensive wastewater is realized, and the method is especially suitable for deep purification of industrial wastewater with complex components and high toxicity.

The invention discloses a potassium ferrate bottom-oriented enrichment slow-release agent and a preparation method and application thereof, and belongs to the technical field of bottom-oriented enrichment slow-release agents, and the preparation method comprises the following steps: S1, adding polyethylene glycol into water glass, dissolving, adding lithium hydroxide, acidifying, aging, washing, drying, grinding and calcining to obtain a modified carrier; s2, adding a potassium hydroxide solid into the hypochlorous acid solution, adding ferric hydroxide, continuously adding the potassium hydroxide solid, stirring at constant temperature, reacting to obtain a black purple solution, cooling, filtering and drying to obtain a potassium ferrate crude product; s3, adding the potassium ferrate crude product in the S2 into a 3M potassium hydroxide solution for dissolving, adding the modified carrier in the S1, stirring under an ultrasonic condition, then adding a potassium hydroxide solid to be saturated, keeping the temperature, standing, carrying out suction filtration, cleaning a filter cake, and drying to obtain a composite material; s4, grinding and sieving the composite material obtained in S3, mixing with a bottom enrichment agent, and tabletting to obtain a potassium ferrate bottom enrichment slow-release agent; the pond substrate can be improved.

The invention provides a method for removing total DNA (Deoxyribose Nucleic Acid) in wastewater with halide ion tolerance, which is used for removing DNA in wastewater containing halide ions based on a potassium ferrate and calcium sulfite coupling system, and belongs to the technical field of sewage purification treatment. The method provided by the invention utilizes Fe (IV) / Fe (V) / Fe (VI) and flocculent precipitate which are not interfered by halide ions in the reaction of potassium ferrate and slightly soluble calcium sulfite to realize efficient removal of DNA in wastewater. According to the method, the oxidation stability under halide ion interference is remarkably improved, better environmental adaptability and more stable removal efficiency are shown, and a new technical scheme is provided for treatment of actual wastewater containing resistance genes.

The invention discloses a continuous preparation device and method of high-purity potassium ferrate. The device comprises a reaction kettle, a stirring device is arranged on the reaction kettle, the interior of the reaction kettle is divided into an upper reaction area and a lower discharging area by an inclined baffle, a drain valve is arranged at the bottom of the lower end of the baffle, and an observation window is arranged on the side wall of the reaction kettle. The liquid discharging condition of the liquid discharging valve is observed; a discharge hole is formed in the side wall of the reaction area close to the lower end of the baffle; the stirring device comprises a motor fixedly arranged at the top of the reaction kettle, an output shaft of the motor is fixedly connected with a stirring shaft, the stirring shaft vertically penetrates through the interior of the reaction kettle, an anchor type stirring paddle is arranged on the stirring shaft, and the anchor type stirring paddle is located in the reaction area. According to the method, the high-purity potassium ferrate is directly separated from the reaction liquid, re-crystallization and organic solvent washing are not needed, and the obtaining cost of the high-purity potassium ferrate is effectively reduced.

The invention discloses sludge-soil-based flow-state solidified soil and a preparation method thereof.The method comprises the steps that 1, potassium ferrate, sodium hydroxide, sodium tripolyphosphate and water are added into sludge soil and stirred and mixed, and sludge soil slurry is obtained; the mass of the potassium ferrate is 0.2%-0.7% of the mass of the mucky soil; 2, a curing agent and water are added into the mucky soil slurry, stirring and mixing are conducted, and flow-state solidified soil is obtained; the curing agent comprises sulphoaluminate cement, Portland cement, steel slag powder, fly ash, a plasticizer, sodium thiocyanate, calcium formate and sodium silicate. By adopting the preparation method disclosed by the invention, the shrinkage of the cured mucky soil can be reduced, the stable improvement of the curing strength of the early-stage, middle-stage, later-stage and long-term fluid-state cured soil is ensured, and the flowability of the fluid-state cured soil is improved.

The invention discloses a preparation method and application of ferroboron co-modified magnetic biochar, and relates to the technical field of water body pollution remediation functional materials. The invention aims to solve the problem that the existing adsorption material has a poor adsorption effect on PNP pollutants. The method comprises the following steps: dissolving boric acid into deionized water to obtain a solution a; adding biomass into the solution a, and fully stirring to obtain a solution b; drying the solution b to obtain a mixture c; mixing potassium ferrate with the mixture c obtained in the step S3, grinding and sieving to obtain a mixture d; the mixture d is heated to 690-700 DEG C and calcined for 1.8-2 h; after calcining is finished, cooling, grinding, washing to be neutral, and finally drying and sieving to obtain the ferroboron co-modified magnetic biochar. The preparation method and application of the ferroboron co-modified magnetic biochar can be obtained.

The present invention discloses a method for purifying high-purity potassium ferrate, comprising the following steps: S1, adding a dilute KOH solution with a concentration of 2 to 6 mol / L to a crude potassium ferrate product to fully dissolve the crude potassium ferrate product, and collecting the filtrate for later use; S2, recrystallization: placing the filtrate in a constant temperature water bath, slowly adding a concentrated KOH solution with a concentration of 15 to 20 mol / L during stirring until potassium ferrate solid precipitates from the solution, standing for 15 to 90 minutes, and removing the filtrate to obtain potassium ferrate crystals; S3, washing: washing the potassium ferrate crystals multiple times; S4, drying: placing the washed potassium ferrate on a watch glass and drying it in a vacuum drying oven to obtain high-purity potassium ferrate. The present invention optimizes the purification process and refines the test parameters of the dissolution process, recrystallization process, rinsing process, and drying process to achieve a one-time purification of more than 90%, thereby improving the purification efficiency and reducing the purification cost.

The utility model relates to the technical field of wastewater treatment, in particular to a sequencing batch reaction device for removing total DNA (Deoxyribose Nucleic Acid) in sewage based on a ferrate and calcium sulfite coupling system. The reaction device comprises an active species generation zone, a reaction zone and a precipitation zone. The active species generation area is provided with a potassium ferrate and calcium sulfite liquid inlet, a reaction liquid outlet and a controllable stirring paddle, and a hose communicated with the reaction area is arranged at the bottom of the active species generation area; the reaction area is provided with an acid-base liquid inlet, a pH probe, a submersible stirrer, a reaction liquid inlet, a sewage sample inlet and a liquid medicine outlet, and a hose communicated with the settling area is arranged at the bottom of the reaction area; and the settling zone is of a funnel-shaped structure. According to the sewage treatment device, potassium ferrate and calcium sulfite are ensured to be fully mixed in the active species reaction zone through effective partitioning, so that the utilization efficiency of a medicament is improved, the medicament and sewage are fully mixed in the reaction zone, pollutants are removed, flocculates are removed through gravity settling in the settling zone, and the total DNA in the sewage is effectively removed.

The invention belongs to the technical field of water treatment and disinfection, and particularly relates to a chlorine dioxide releasing agent with low corrosivity and a flocculation function and a preparation method of the chlorine dioxide releasing agent. The chlorine dioxide releasing agent is prepared from the following raw materials in percentage by mass: 8 to 12 percent of potassium ferrate, 16 to 22 percent of sodium chlorite, 15 to 23 percent of organic acid, 12 to 14 percent of ferric salt, 10 to 20 percent of peroxide donor, 6 to 12 percent of succinic acid and the balance of drying agent. The pH value of a solution activated by the chlorine dioxide releasing agent is close to neutral, and the problems that an existing chlorine dioxide releasing tablet is too low in pH and too strong in corrosion are solved; and moreover, the conversion rate of sodium chlorite and the purity of chlorine dioxide are effectively improved. In addition, the releasing agent also has dual effects of disinfection and flocculation of clear water, not only improves the disinfection efficiency, but also greatly reduces the production cost.

The invention provides a method for treating oily sewage through combination of potassium ferrate and sodium hypochlorite, and belongs to the field of oily sewage treatment. The method comprises the steps of pretreatment of oily sewage and wastewater, catalytic oxidation, solid-liquid separation and material regeneration. According to the method for treating the oily sewage through combination of the potassium ferrate and the sodium hypochlorite, the problems that in traditional oily sewage treatment, the utilization rate of an oxidizing agent is low, the sludge amount is large and energy consumption is high are solved, selective adsorption-catalytic oxidation integrated treatment of the oily sewage is achieved, a potassium ferrate decomposition product is Fe (OH) 3 floc, and the potassium ferrate and the sodium hypochlorite are recycled. The catalyst can adsorb residual pollutants and promote solid-liquid separation, no heavy metal sludge is generated, NaClO and K2FeO4 are catalytically activated, the actual dosage of the agent is reduced, and the sludge yield is low. The Fe3O4 (at) MIP-Azo (at) K2FeO4: Azo-SO2Cl nanosheet adopted by the invention realizes integration of multiple functions of adsorption, catalysis, oxidation and magnetic separation, target pollutants in oily sewage can be selectively captured, the local pollutant concentration is improved, and the subsequent oxidative degradation efficiency is accelerated.

The invention discloses a method for removing COD (Chemical Oxygen Demand) in wastewater and application of the method. The method comprises the steps that a composite oxidizing agent A is added into the wastewater, a first stirring reaction is carried out, and effective components of the composite oxidizing agent A comprise sodium percarbonate and manganese dioxide; a composite oxidizing agent B is added into the reacted wastewater, a second stirring reaction is carried out, and effective components of the composite oxidizing agent B comprise potassium ferrate and hydrogen peroxide. The method realizes efficient treatment of high-concentration organic wastewater, and has both economical efficiency and operability.

The invention discloses an oilfield produced water treatment process which comprises the following steps: alternately adding an iron ion transforming agent component A and a powerful component B into oilfield sewage subjected to oil removal and desulfurization treatment; then, adding a universal component C; wherein the iron ion transforming agent component A is one or any combination of potassium permanganate, hydrogen peroxide, bleaching powder, ClO2, chlorine, potassium ferrate, sodium hypochlorite and MnO2; the powerful component B is one or any combination of amino carboxylic acid salts and amino / hydroxyl phosphonic acid salts; and the general component C is one or any combination of hydroxycarboxylic acid or poly (phenol, enol) hydroxyl salts. The invention further discloses the combined reagent for treating the oilfield produced water and application of the combined reagent. The method provided by the invention has an obvious iron ion removal effect.

The application discloses a method for removing trace thallium in wastewater by using a high ferrate system reinforced by iron-modified graphene nanobiocarbon, and belongs to the technical field of wastewater treatment. The method comprises the following steps: modifying biocarbon with iron to obtain iron-modified nanobiocarbon, loading graphene on the iron-modified nanobiocarbon, confining and doping iron particles in graphene nanometer, and obtaining iron-modified graphene nanobiocarbon. The application firstly confines and dopes iron particles in graphene nanometer, constructs a multifunctional material with high adsorption capacity and multiple active sites, and couples a potassium ferrate process to construct an adsorption-oxidation synergistic thallium removal system.

The invention relates to a potassium ferrate pre-oxidation-based silver and gold ore cyaniding silver and gold extraction method, and belongs to the technical field of hydrometallurgy. According to the method, potassium ferrate is used as a main oxidizing agent, sulfuric acid is used as an auxiliary agent, the silver-gold ore is pretreated, sulfide minerals wrapping gold and silver are effectively broken through the strong oxidation effect of the potassium ferrate and the synergistic effect of the sulfuric acid, and therefore wrapping is opened, the gold and the silver are exposed, and then cyanidation leaching is conducted. The method has the advantages of efficient leaching, environmental protection and energy saving, under the condition that the same leaching effect is achieved, the use amount of a cyaniding agent can be reduced, the production cost can be reduced, meanwhile, potential hazards of cyanide to the environment are reduced, an efficient, environment-friendly and energy-saving solution is provided for the cyaniding silver and gold extraction technology of the silver and gold containing ore, and the method has the advantages of being high in practicability and wide in application prospect. The method has a wide application prospect and important practical significance.

This invention belongs to the field of water treatment and disinfection technology, specifically relating to a chlorine dioxide releasing agent with both low corrosivity and flocculation functions, and its preparation method. The chlorine dioxide releasing agent is composed of the following raw materials in the indicated mass percentages: potassium ferrate 8-12%, sodium chlorite 16-22%, organic acid 15-23%, iron salt 12-14%, peroxide donor 10-20%, succinic acid 6-12%, with the balance being a desiccant. The activated solution of the chlorine dioxide releasing agent obtained by this invention has a near-neutral pH value, solving the problem of excessively low pH and strong corrosion in existing chlorine dioxide releasing tablets; it also effectively improves the conversion rate of sodium chlorite and the purity of chlorine dioxide. Furthermore, this releasing agent has dual functions of disinfection and flocculation of clean water, not only improving disinfection efficiency but also significantly reducing production costs.

The invention provides a culture method and device of anaerobic ammonia oxidation sludge particles and application, and belongs to the technical field of anaerobic ammonia oxidation. Iron-rich activated carbon is used as a carrier, sludge is inoculated, and a nutrient solution is added for sludge granulation culture; the preparation method of the iron-rich activated carbon comprises the following steps: impregnating biochar with a potassium ferrate solution, and drying to obtain potassium ferrate modified biochar; calcining the potassium ferrate modified charcoal in an anaerobic environment to obtain iron-rich activated carbon; the sludge contains microbial flora of Bacteroidota, Planctomycin and Chloroflexi, and the microbial flora of Bacteroidota, Planctomycin and Chloroflexi is used as a raw material. According to the present invention, iron-rich active carbon is adopted as a carrier, AL-2 and c-di-GMP bi-component quorum sensing signal molecules secreted by flora and other EPS with high protein content ratio are adopted, and Chloroflexi filamentous structure and gliding movement ability are adopted to promote the copolymerization of the three bacteria, such that the granulation of the anaerobic ammonium oxidation bacteria important family member Planctomycin is promoted.

The present application relates to a kind of oil-removing denitrification phosphorus-removing agent for treating domestic sewage and its preparation, method for using, phosphorus-removing agent is prepared from the following weight parts of raw materials: 15-29 parts of dodecyl imidazoline, 18-35 parts of sodium alginate, 10-30 parts of coconut shell powder, 20-40 parts of potassium ferrate, 15-45 parts of microcrystalline cellulose.The composite phosphorus-removing agent can not only remove oil, denitrification and phosphorus, but also the consumption of reagent is only 1 / 4 of conventional phosphorus-removing agent, when using, a certain amount of iron-containing aluminate waste water is introduced into domestic sewage and mixed according to proportion, and the sedimentation tank process is changed into flotation process, then the composite phosphorus-removing agent is added, and the suspended substance in water is used to collect iron-aluminum phosphorus compound, after such modification, various harmful substances in water quality are removed, and the consumption of phosphorus-removing agent is also greatly reduced.

The invention is applicable to the technical field of water treatment and drinking water disinfection, and provides a dynamic pre-oxidation disinfection method for inhibiting generation of halogenated disinfection byproducts, which comprises the following steps: raw water pretreatment: treating raw water to reduce turbidity and organic matters; pre-oxidation treatment: adding a pre-oxidant potassium ferrate into the pretreated raw water to carry out a pre-oxidation reaction, and removing generated iron flocs after the pre-oxidation reaction; chlorine disinfection treatment: adding a sodium hypochlorite solution into the pre-oxidized water for chlorine disinfection. According to the method, potassium ferrate pre-oxidation and a disinfectant (sodium hypochlorite) are combined for use, an online monitoring and feedback regulation system is combined, a disinfection process is dynamically optimized to reduce generation of halogenated disinfection byproducts (DBPs) in drinking water, and the method is suitable for advanced purification and safety guarantee of drinking water treatment in urban and rural water plants, emergency water purification devices and micro-polluted water sources.

The invention relates to the technical field of surface functional coatings, in particular to plasma electrolytic oxidation liquid and a preparation method thereof, and a titanium alloy fastener surface oxide ceramic coating and a preparation method thereof. The invention provides plasma electrolytic oxidation liquid. The plasma electrolytic oxidation liquid comprises a film-forming agent, a coloring agent, a bath solution stabilizer, a coloring auxiliary agent and water, the film-forming agent comprises one or more of sodium pyrophosphate, sodium polyphosphate and sodium perphosphate; the coloring agent comprises one or more of dicobalt oxalate tetraacetate, copper tetramine sulfate, titanium potassium oxalate and potassium ferrate; the bath solution stabilizer comprises one or more of disodium ethylenediaminetetraacetate, sodium tetraborate, sodium potassium tartrate tetrahydrate and sodium citrate; the coloring auxiliary agent comprises one or more of sodium silicate, sodium tungstate and sodium molybdate. The plasma electrolytic oxidation liquid can ensure that a surface coating with good blackness is obtained on the surface of a titanium alloy fastener within a short time.

This invention discloses an iron-based multimetallic catalytic material, its preparation method, and its application, belonging to the field of catalyst preparation technology. The preparation method includes: dissolving two or more water-soluble metal salts with different hydroxide solubility products in water to obtain a mixed solution A; dissolving potassium ferrate in cold water to obtain solution B; pouring solution B into mixed solution A under stirring to obtain mixed solution C; allowing the solution to settle at low temperature until the supernatant changes color from dark purple to light purple and reaches neutral pH, then filtering, washing, and drying to obtain a precursor; calcining the precursor in a mixed atmosphere of hydrogen and argon to obtain the iron-based multimetallic catalytic material. This material has a multi-layered enclosed microstructure, with metal oxides of high hydroxide solubility products located on the periphery and those of low solubility products located inside, achieving a gradient arrangement and synergistic effect of metal components. The process of this invention is simple and the conditions are mild. The obtained catalyst exhibits high catalytic activity, high selectivity, and excellent stability in the countercurrent water-gas reaction.

The invention discloses a method for efficiently treating oilfield wastewater through cooperation of pentavalent iron and sunlight catalytic oxidation. The method comprises the following specific operation steps: adding a trace amount of oil field wastewater subjected to oil removal and coagulation air floatation treatment into a potassium ferrate solution, stirring and standing, and reducing hexavalent iron in an organic matter induction solution in the oil field wastewater into tetravalent iron to obtain a tetravalent iron-containing solution; the prepared tetravalent iron-containing solution and the potassium ferrate solution are simultaneously added into to-be-treated oil field wastewater according to a certain proportion, and are fully stirred under sunlight to induce generation of pentavalent iron and promote transfer of oxygen atoms, so that the amount of active substances in the system is increased, and finally, the COD removal rate of the oil field wastewater can reach 90% or above. According to the method, solar energy is effectively utilized, secondary pollution to water is avoided, and the method has the characteristics of high efficiency and energy conservation.

The invention provides a carrier for enriching anaerobic ammonium oxidation bacteria as well as a preparation method and application of the carrier, and belongs to the technical field of anaerobic ammonium oxidation materials. The invention provides a preparation method of a carrier for anaerobic ammonium oxidation bacteria enrichment, which comprises the following steps: impregnating biochar with a potassium ferrate solution, and drying to obtain potassium ferrate modified biochar; calcining the potassium ferrate modified charcoal in an anaerobic environment to obtain an anaerobic ammonium oxidation bacterium enrichment carrier; the dipping comprises soaking, intermittent stirring and continuous stirring which are performed in sequence. The preparation method comprises the following steps: loading various forms of iron generated by potassium ferrate in water on a biochar material to obtain a composite material, and calcining the composite material at high temperature to obtain a carrier product. The carrier is long in service life, can realize continuous release of iron, promotes formation of anaerobic ammonium oxidation bacteria biological membranes, not only contributes to rapid enrichment culture of anaerobic ammonium oxidation bacteria, but also can be continued to anaerobic ammonium oxidation bacteria engineering application.

The invention discloses an iron-based multi-metal catalytic material as well as a preparation method and application thereof, and belongs to the technical field of catalyst preparation. The preparation method comprises the following steps: dissolving more than two metal water-soluble salts with different hydroxide solubility products in water to obtain a mixed solution A; dissolving potassium ferrate in cold water to obtain a solution B; pouring the solution B into the mixed solution A while stirring to obtain a mixed solution C; after the color of the supernate becomes light purple from dark purple and the pH is neutral, suction filtration, washing and drying are performed, and a precursor is obtained; and calcining in a mixed atmosphere of hydrogen and argon to obtain the iron-based multi-metal catalytic material. The material is of a multi-layer surrounding type microstructure, metal oxides with high hydroxide solubility products are located on the periphery, metal oxides with low hydroxide solubility products are located inside, and gradient arrangement and synergistic effect of metal components are achieved. The method is simple in process and mild in condition, and the obtained catalyst shows high catalytic activity, high selectivity and excellent stability in the reverse water gas reaction.

The application discloses a kind of photovoltaic industry high concentration slice wastewater pretreatment method, comprising the following working steps: step S1, in slice wastewater, add alkaline substance, react 30min;The alkaline substance is selected from one or more of sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, and alkaline substance dosing concentration is 1000~5000mg / L;Step S2, the slice wastewater after processing in step S1 is heated to 38~45 ℃, so that polyether compound is converted from dissolved state to insoluble state and precipitates;Step S3, in the slice wastewater after processing in step S2, add high ferric acid salt, react 30min;The high ferric acid salt is sodium ferrite or potassium ferrite, and the high ferric acid salt dosing concentration is 50~400mg / L.The application can reduce the temperature required for polyether compound thermal destabilization in slice wastewater, save wastewater treatment operation energy consumption, also can avoid when slice wastewater temperature reduces again dissolved state polyether compound, increase the actual removal rate of polyether compound.

The invention discloses a pretreatment method of high-concentration slicing wastewater in the photovoltaic industry, which comprises the following working steps: S1, adding an alkaline substance into the slicing wastewater, and reacting for 30 minutes; the alkaline substance is selected from one or more of sodium hydroxide, potassium hydroxide, sodium carbonate and potassium carbonate, and the adding concentration of the alkaline substance is 1000-5000 mg / L; step S2, heating the slicing wastewater treated in the step S1 to 38-45 DEG C, so that the polyether compound is converted from a dissolved state into an insoluble state to be separated out; s3, ferrate is added into the slicing wastewater treated in the step S2, and a reaction is conducted for 30 min; the ferrate is sodium ferrate or potassium ferrate, and the adding concentration of the ferrate is 50-400 mg / L. According to the method, the temperature required by thermal destabilization of the polyether type compound in the slicing wastewater can be reduced, the operation energy consumption of wastewater treatment is saved, the situation that the insoluble polyether type compound is dissolved again after the temperature of the slicing wastewater is reduced can be avoided, and the actual removal rate of the polyether type compound is increased.

The application provides a novel piezoelectric catalytic activation method and application of ferrate, and belongs to the technical field of ferrate activation, which comprises the following steps: dissolving potassium ferrate in deionized water; then adding zinc stannate into the potassium ferrate solution; and finally, under the condition of ultrasonic, the piezoelectric property of zinc stannate is used to catalytically activate ferrate. The activation method of ferrate provided by the application can be used for the degradation of sulfonamide antibiotics in water, and the degradation efficiency is significantly better than that of ferrate alone, and the adaptability is strong, and stable activation effect can be shown in various anion environments, and more importantly, the novel activation method solves the problem that the stability and oxidizability of ferrate are incompatible, can react under neutral conditions, ensures the stability, and has the oxidizability at the same time, and is suitable for popularization and application in sewage treatment.

The application discloses a preparation method of microporous high-graphitization odor-removing powder carbon, and belongs to the technical field of activated carbon materials. The method uses anthracite as raw material, carries out desalination through hydrochloric acid and hydrofluoric acid, carries out pretreatment through modification of trimethyl orthophenyl phosphate and titanium acid tetraisobutyl ester, soaks in a potassium ferrate solution, and finally obtains activated carbon with high micropore volume and high graphitization degree through carbonization and steam activation under nitrogen protection. Potassium ferrate acts as a catalyst, and simultaneously promotes the potassium hydroxide activation reaction and the iron-based graphitization process. The method is simple and low in cost, the obtained material has excellent adsorption and stability, significantly improves the adsorption capacity of 2-methyl isoborneol and geosmin, and is suitable for efficient removal of odor substances in drinking water sources.