46results about How to "Improve the effect of oxidation degradation" patented technology

The invention discloses a preparation method of a catalyst for catalyzing ozonation for advanced treatment of coal chemical wastewater and relates to a preparation method for the catalyst. The preparation method is used for solving the technical problems that the existing ozonation method is poor in ozone water solubility and low in degradation rate, successfully applied to the advanced treatment of the coal chemical wastewater, and capable of removing the degradation-resistant hazardous substances in water, improving the biodegradability of the wastewater and enabling the quality of the outlet water to reach the first-grade national emission standards. The preparation method comprises the following steps of: firstly, washing active carbon particles; secondly, soaking the active carbon in a metal nitrate solution, shaking for mixing and reacting, and taking out the active carbon 12 hours later; and thirdly, drying the active carbon and putting the dried active carbon to a muffle furnace, heating the muffle furnace to 200 DEG C by adopting nitrogen gas as the protective gas, roasting for one hour, continuing heating the muffle furnace to 600 DEG C and roasting for 3 hours at 600 DEG C to obtain the catalyst for treating the coal chemical wastewater. By using the catalyst prepared by the preparation method disclosed by the invention, the utilization rate of ozone is greatly improved, and the catalyst is very suitable for the field of coal chemical wastewater treatment.

The invention discloses a device and method for treating pulping wastewater by a Fenton catalytic oxidation method. The device comprises a water collecting tank, a catalytic oxidation tower, a neutralization tank, a coagulative precipitation tower, a clean water tank and a medicament preparation system, wherein a balance regulating tank at the top of the catalytic oxidation tower is connected with the water collecting tank through a pipeline; the balance regulating tank is connected with a water distribution pipe at the bottom of a fluidized catalytic reaction column of the catalytic oxidation tower through a pipeline; a circulating water outlet tank is connected with the water distribution pipe through a pipeline; the neutralization tank is connected with a water distribution pipe of the coagulative precipitation tower through a pipeline; an outlet water tank is arranged on the external wall of the upper part of the coagulative precipitation tower, and the top of the coagulative precipitation tower is connected with the outlet water tank through an overflow port. The method comprises the steps of carrying out balance regulating treatment, carrying out fluidized catalytic oxidation treatment, carrying out coagulative precipitation and purifying. According to the device and the method, by using efficient mass transfer efficiency under fluidized conditions, a relatively high wastewater treatment effect is achieved under the condition that the dosage of hydrogen peroxide and ferrous ions is relatively low, so that the wastewater treatment efficiency is increased, and meanwhile, the amount of generated sludge is reduced.

The invention relates to catalysts for treating industrial waste water, in particular to an iron inner electrolysis catalyst and a preparation method thereof. The iron inner electrolysis catalyst comprises the following components: simple copper supported by molecular sieves, manganese dioxide supported by molecular sieves, and natural manganese ore with the mass ratio thereof being 1:0.5-1.0:0.5-1.0. The preparation method thereof comprises the following steps: respectively immersing roasted molecular sieves in the solutions of soluble copper salt and manganese salt by the supporting capacity of copper and manganese dioxide; dipping, drying and roasting the molecular sieves to respectively obtain the copper oxide and manganese dioxide supported by the molecular sieves; crushing and sieving the natural manganese ore to obtain the natural manganese ore granules; reducing the copper oxide supported by the molecular sieves by using hydrogen to obtain the simple copper supported by the molecular sieves; and mixing the simple copper supported by molecular sieves, manganese dioxide supported by molecular sieves, and natural manganese ore granules by the mass ratio to obtain the product. Accordingly, the invention is suitable for the pre-treatment before the biochemical treatment of high-chromaticity non-biodegradable industrial waste water.

The invention provides a preparation method of a zinc copper sulfide flower-like micro-sphere super-structure visible-light-driven photocatalyst composed of nanosheets. The method comprises the following steps: respectively adding a zinc salt and a copper salt into o-hydroxyl diol, stirring and dissolving, adding thiourea, and continuously stirring until the thiourea is completely dissolved; adding polyvinylpyrrolidone (PVP), and performing stirring reflux at a temperature of 120-160 DEG C for 1-3 hours; naturally cooling to a room temperature, and performing centrifugal separation; washing and drying the obtained precipitate, thereby obtaining the flower-like micro-sphere super-structure visible-light-driven photocatalyst ZnxCu1-xS composed of nanosheets (x is more than or equal to 0.05 and less than or equal to 0.3). The product prepared by the method disclosed by the invention is large in specific surface area, high in photocorrosion resistance and high in visible-light photocatalytic activity, and environmental pollutants can be subjected to photocatalytic degradation by fully utilizing sunlight. The method has the advantages of being simple in production process, safe in production process, easily controllable in reaction parameters and capable of easily realizing large-scale industrialized production.

The invention discloses an electro-catalysis method for disposing waste brown liquid. The electro-catalysis method for disposing the waste brown liquid comprises the following steps: a variable-valence metal ion catalyst is added into the waste brown liquid and evenly stirred, the mixture is electrolyzed under a high oxygen evolution overpotential positive pole and a low copper evolution overpotential negative pole, and at the same time copper ions in an electrolyte are monitored in real time. When the concentration of the copper ions in the electrolyte is small than 1g / L, the electrolysis is stopped. The variable-valence metal ion catalyst is high in valence and strong in oxidation capacity. After the electrolysis is finished, by means of the operation of extraction and back extraction, the recycling of a positive ion type catalyst is achieved. According to the electro-catalysis method for disposing the waste brown liquid, the variable-valence metal ion catalyst is adopted to electrolyze the waste brown liquid, coppery organic complexes in the waste brown liquid can be effectively degraded, the coppery organic complexes in the waste brown liquid are enabled to release free copper ions, the free copper ions deposit at the negative pole, the recovery rate of copper in the waste brown liquid is improved, the catalyst can be recycle through extraction, and the cost is reduced effectively.

The invention discloses a Fenton cooperated ozone fluidized catalytic oxidation waste water treatment device and a waste water treatment method thereof. The device comprises a pretreatment tower (9), a catalytic oxidation tower (1), an aftertreatment tower (27), an agent preparation system (30), an ozone supply system and a clear water pool (29). The waste water treatment method of the device comprises the following steps of 1, pretreatment; 2, catalytic oxidation treatment; 3, aftertreatment. By means of the waste water treatment method of the device, waste water treatment efficiency is improved, the removal effect of COD and chroma of waste water is improved, meanwhile, the use amount of a chemical reagent is reduced, sludge output is reduced, the ozone utilization rate is increased, and the waste water treatment cost is reduced.

The invention discloses a device and method for treating pulping wastewater by a catalyst and ozone. The device comprises a first-order reactor and a second-order reactor in which an active adsorption material load transition metal oxide catalyst is arranged, an exhaust receiving bottle, an ejector and a pump, wherein a first water inlet, a first water outlet and a reflux inlet are arranged on a tank body of the first-order reactor, a first ozone inlet and an exhaust outlet are arranged on a top cover, and an aerator is arranged in the tank body; a second water inlet, a second water outlet, athird water outlet and a sampling port are arranged on a tank body of the second-order reactor, and a second exhaust port is arranged on a top cover. The wastewater firstly enters the first-order reactor, is pumped into the ejector and the second-order reactor to be treated by the catalyst and the ozone so as to realize the effective degradation of organic matters in the wastewater. In the deviceand the method, the treatment effect is good, the ozone utilization rate is high, the operation and maintenance are convenient, the investment is low, the COD (Chemical oxygen demand) removal rate ismore than 60%, and the decolorization removal rate reaches more than 92%.

The invention belongs to the field of catalysts and environmental water pollution treatment, and particularly relates to a supported metalloporphyrin / phthalocyanine catalyst as well as a preparation method and an application thereof. According to the preparation method disclosed by the invention, the loading of metalloporphyrin / phthalocyanine on the carrier material is simply and efficiently realized by a mechanochemical method, the agglomeration effect of metalloporphyrin / phthalocyanine is reduced to a great extent, and due to an electron transfer effect between the carrier material and metalloporphyrin / phthalocyanine, the density of electron clouds around central metal ions of porphyrin / phthalocyanine is changed, the heterolysis effect of hydroperoxide is promoted, and the activity is enhanced. The metalloporphyrin / phthalocyanine catalyst is loaded on the surface of the carrier material through a mechanochemical method, compared with a metalloporphyrin / phthalocyanine catalyst beforeloading, the loaded metalloporphyrin / phthalocyanine catalyst has the advantages that the oxidative degradation performance on organic pollutants is greatly improved, and the pH application range of the catalyst is also greatly widened.

The invention discloses a preparation method of catalytic particles for a device for composite catalytic oxidation treatment on organic wastewater. The method takes ceramic particles as carriers and comprises the steps of boiling the ceramic particles in 0.1mol / l hydrochloric acid and 0.1mol / l sodium hydroxide solution in turn for 30 minutes respectively; repeatedly flushing and soaking; draining the cleaned carriers, and drying at 105 DEG C for 10 hours; preparing a mixture from Mn(NO3)2, Ce(NO3)3 and RuCl3 at a molar ratio of 100:10:1; adding absolute ethyl alcohol into the mixture to obtain mixed liquid, wherein the content of metal salt in the mixed liquid is 5-10% by mass; adding 0.1mol / l hydrochloric acid solution accounting for 5% of the mixed liquid by volume to obtain impregnation liquid; putting the pretreated ceramic particles into the impregnation liquid, and dynamically soaking in a shaking table for 3 hours; filtering out the particles, and impregnating the ceramic particles with impregnation active components; drying and roasting for activation: drying the ceramic particles impregnated with the impregnation active components at 105 DEG C for 4 hours, and roasting for activation at 550 DGE C in a muffle for 3 hours; repeating the steps B3 and B4 for five times.

The invention discloses an integrated fluidized catalytic oxidation tower and a method for deeply treating wastewater by using the same. A balance adjusting unit of the catalytic oxidation tower is connected with a water distribution pipe at the bottom of a catalytic oxidation unit through a pipeline; the outer side of the upper part of the catalytic oxidation unit is provided with a circulating water tank, the outer side of the circulating water tank is provided with an intermediate water tank, and the top of the circulating water tank is connected with the intermediate water tank through an overflow port; the intermediate water tank is connected with a water distribution pipe of a coagulation sedimentation unit through a pipeline, and a water collecting basin is connected with the balance adjusting unit through a pipeline; the balance adjusting unit is connected with the water collecting basin through a first overflow pipe, and the intermediate water tank is connected with the water collecting basin through a second overflow pipe; a water outlet of a water outlet tank is connected with a clean water basin through a water outlet pipe. By using the integrated fluidized catalytic oxidation tower, the mass transfer efficiency and the chemical reaction speed are effectively increased, the oxidative degradation effect for organic pollutants in wastewater is improved, the dosage of a Fenton reagent can be reduced, and the yield of chemical sludge in the later coagulation process can be reduced.

The invention discloses a modularly assembled plate type catalysis reaction device and a modularly assembled plate type catalysis reaction method. By the adoption of a modular assembling working mode of a plate type reactor and an ultraviolet component, a photocatalytic oxidation system with an electric-charge-free environment-friendly treatment technology in which solar photovoltaic power generation, pneumatic water circulation, oxygen enrichment, natural light and solar energy are coordinated and which serves as a characteristic has the practical characteristics of simple structure, convenience and quickness in assembling, energy conservation and high efficiency. The reactor is combined with multiple units of the ultraviolet component, so that the application range of the system process and the land is enlarged (multi-stage reaction of different factors, application of irregular working lands and the like). The modularly assembled plate type catalysis reaction device is suitable for water treatment application in industry and agriculture and is further suitable for water quality purification in environment-friendly, aquacultural and green landscape water areas.

The invention relates to a deep treatment system for organic wastewater of bio-pharmaceutical industry. The deep treatment system comprises an adjusting tank, a sedimentation tank, an electric flotation device, an advanced catalytic oxidation tower, an anaerobic membrane bed-aerated biofilter and a discharge pipe connected in turn, wherein the adjusting tank comprises a submerged stirrer; the electric flotation device comprises an electrode group; the electrode group is arranged at the bottom of the tank inner cavity and comprises a base, negative and positive electrode boards and a connection lead screw, the positive electrode board is an insoluble electrode board such as an iridium-coated titanium or ruthenium-coated titanium positive electrode board, and the negative electrode board adopts stainless steel graphite; the advanced catalytic oxidation tower is equipped with an ozone generator and is subjected to ultraviolet radiation; and the anaerobic membrane bed-aerated biofilter is equipped with an anaerobic tank, an aerobic tank and an aeration system. By using the deep treatment system for organic wastewater provided by the invention, the electrochemical treatment, filtration and biological degradation are integrated, organic matters and ammonia nitrogen in wastewater are more effectively removed, the performance-to-price ratio is high, the operation is simple, no toxic or harm action to the subsequent treatment is generated and secondary pollution can be effectively avoided.

The invention discloses a water treatment system for controlling ultrafiltration membrane pollution by catalyzing hydrogen persulfate through ultraviolet coupling ferrous ions and the application of the water treatment system. The system comprises a hydrogen persulfate adding device, a ferrous ion adding device, a raw water pipeline, an ultraviolet light emitting device, an advanced oxidation coagulation contact tank, a stirring device, a sedimentation tank and an ultrafiltration membrane device, the drinking water safety is guaranteed by combining advanced oxidation-coagulating sedimentationpretreatment and an ultrafiltration process, and the pollution of an ultrafiltration membrane is controlled by changing characteristics of organic matters and inorganic matters in water in a pretreatment mode. The system has the advantages of simple structure, easy and convenient operation and low treatment cost, Fe2+ ions and PMS can be utilized to the maximum extent, meanwhile, the excellent removal effect on organic pollution and inorganic pollution can be achieved, therefore, the drinking water quality is improved, the ultrafiltration membrane pollution is relieved, and the membrane filtration flux is increased.

The invention discloses a method for degrading polymer-containing waste water in an oil field by an improved Fenton system. The invention relates to a method for degrading polymer-containing waste water in an oil field, and mainly aims to solve the problems that the polymer-containing waste water is difficult to degrade effectively, reagents are expensive, and degradation is not complete in the existing water treatment method. The method comprises the following steps: 1, adding a H2O2 solution and a Fe<2+> reagent into polymer-containing waste water of an oil field; and 2, adding ascorbic acid, and carrying out a stirring reaction to obtain the polyacrylamide-removed waste water. By using the improved Fenton system, the method can be used for efficiently degrading the polymer-containing waste water. The problems that polymer-containing waste water is difficult to degrade and the degradation efficiency of a traditional degradation mode is low are solved. When the method is used for degrading the polyacrylamide in the polymer-containing waste water of the oil field, the degradation efficiency can reach 85-95%. The method is suitable for degrading polymer-containing waste water in anoil field.

The invention belongs to the field of wastewater treatment, and provides a method for treating bamboo wood heat treatment wastewater. The method comprises the following steps: adjusting the pH value of the bamboo wood heat treatment wastewater to be treated to 3.8-4.2 by using a composite catalyst in order to obtain pretreated wastewater; mixing the pretreated wastewater, an oxidant and a carrier,and carrying out catalytic oxidative cracking to obtain catalytic oxidative cracked wastewater; and carrying out solid-liquid separation on the catalytic oxidative cracked wastewater to obtain treated wastewater. An inorganic acid is mainly used for adjusting the pH value of the wastewater, and an organic acid can adjust the pH value, and also can promote the oxidant to release secondary oxygen due to its oxygen-containing structure in order to improve the oxidative degradation of polymeric organic matters in the wastewater; and the carrier has an adsorption effect, and can also catalyze sub-nano and nano-materials. The method can adjust the pH value of the wastewater, reduce COD, chroma, total sugar, total nitrogen and TOC and increase the B / C ratio of the wastewater.

The invention discloses a Fenton fluidization wastewater treatment device and a wastewater treatment method thereof. The device includes a water collection pond (8), a pretreatment tower (13), a fluidization reaction tower (1), a post-treatment tower (26), a reagent preparation system (29) and a clear water pond (28). The wastewater treatment method includes the following steps of 1 pretreatment, 2 Fenton fluidization treatment and 3 post-treatment. The wastewater treatment method can reduce the consumption of chemical reagents, the costs can be reduced, and a treatment effect can be improved.

The invention discloses a Fenton synergistic ozone wastewater treatment device and a wastewater treatment method thereof. The device comprises a pretreatment tower (9), a catalytic oxidation tower (1), an aftertreatment tower (27), a chemical reagent preparation system (30), an ozone supply system and a clear water tank (29). The wastewater treatment method of the device comprises the following steps: (1) pretreatment; (2) catalytic oxidation treatment; and (3) aftertreatment. By adopting the device for wastewater treatment, the wastewater treatment efficiency can be raised, the removal effect of COD and chroma of the wastewater is improved, the dosage of chemical reagent is reduced, and the ozone utilization rate is high.

The invention discloses a device and method for enhancing oxidative degradation of organic waste gas, and belongs to the technical field of organic waste gas treatment. The device comprises a box body, a plurality of ultraviolet lamp tubes and a plurality of catalytic assemblies; one end of the box body is provided with a waste gas inlet, and the other end is provided with a waste gas outlet; a plurality of catalytic assemblies which are sequentially arranged along a path from the waste gas inlet to the waste gas outlet are arranged in the box body; the plurality of ultraviolet lamp tubes andthe plurality of catalytic assemblies are arranged in a staggered manner; an ozone water conveying branch pipe is correspondingly arranged at the top of each catalytic assembly, and an ozone water recovery branch pipe is correspondingly arranged at the bottom of each catalytic assembly. According to the device and method for enhancing oxidative degradation of the organic waste gas, the synergisticeffect of ultraviolet rays, hydroxyl radicals in water vapor and hydroxyl radicals on the surfaces of the catalytic assemblies is utilized, the oxidative degradation effect of VOCs is enhanced, and compared with an existing ultraviolet photolysis system and an existing photocatalysis system, the organic waste gas degradation capacity is more efficient and thorough.

The invention discloses a papermaking-process reconstituted tobacco wastewater advanced treatment device and a wastewater treatment method thereof. The device comprises a water collecting tank (9), a pretreatment tower (14), a catalytic oxidation tower (1), an aftertreatment tower (28), a medicament preparation system (34), an ozone supply system and a clean water tank (33). The wastewater treatment method of the device comprises the following steps: (1) carrying out pretreatment; (2) carrying out catalytic oxidation treatment; and (3) carrying out aftertreatment. The wastewater treatment method of the device has the advantages that the consumption of a chemical agent can be reduced, wastewater treatment efficiency is improved, wastewater COD and chromaticity removal effect is improved, and the ozone utilization rate is increased.

The invention relates to a polyphenylene sulfide production waste water recycling method. The method comprises the following steps: (1) collecting a given amount of polyphenylene sulfide production waste water, heating and stirring the polyphenylene sulfide production waste water by utilizing a constant-temperature water bath, then adjusting the pH to be 2.3 to 2.7 by utilizing hydrochloric acid, keeping the temperature for 0.5 to 1h at a reaction temperature, then adding a mixed solution of ferrous sulfate solution and hydrogen peroxide, and after the ferrous sulfate solution and the hydrogen peroxide are added, continuously keeping the temperature for 0.5 to 1h; and (2) adding sodium hydroxide into the production waste water treated in the step (1) to adjust the pH to be 8.0 to 8.4, lowering the temperature to 18 to 20 DEG C, performing the suction filtering, wherein a filter cake is iron cement solid waste, and detecting filtrate. The method has the advantages that the mixed solution of the ferrous sulfate solution and the hydrogen peroxide is used for treating the polyphenylene sulfide production waste water, and process parameters and conditions in the treatment method are strictly controlled, so that the treated waste water can be used as a raw material in a chlor-alkali plant to produce chlorine and caustic soda, and a purpose of recycling the waste water can be realized.

The invention relates to a nano ion composite for wastewater treatment. The composite comprises the following raw materials by mass percentage: 40-50wt% of anion powder, 40-50wt% of an ozone activating catalyst, 5-8wt% of a solid slow release demulsifying agent and 5-10wt% of gel. The preparation method of the composite comprises the following steps of weighing the raw materials according to the corresponding mass percentage, mixing and sufficiently grinding the anion powder, the ozone activating catalyst and the solid slow release demulsifying agent, adding the gel of the corresponding mass to the ground powder, stirring and mixing, and finally performing pelleting in a pelleting machine. The nano ion composite has the benefits that the nano ion composite can effectively improve solubility of ozone and negative oxygen ions in water, and activate and decompose partial ozone into a hydroxyl radical with better oxidative degradation capability, and the oxidative degradation treatment efficiency of organic pollutants such as oil in wastewater is improved.

The invention discloses an efficient wastewater treatment device for papermaking process tobacco leaf regeneration and a wastewater treatment method thereof. The device comprises a water-collecting pool (9), a pretreatment tower (14), a catalytic oxidation tower (1), an aftertreatment tower (28), an agent preparation system (34), an ozone supply system and a clear water pool (33). The wastewater treatment method includes the following steps that (1), pretreatment is carried out; (2), catalytic oxidation treatment is carried out; (3), aftertreatment is carried out. By the utilization of the wastewater treatment method, wastewater treatment efficiency is improved, the quantity of consumed chemical agents is reduced, the removal effect of the wastewater COD and color degree is improved, the utilization rate of ozone is increased, and wastewater treatment cost is lowered.

The invention discloses a method for reducing VOCs entering photo-thermal distillation condensation desalinated water by using activated persulfate, which comprises the following steps: placing an integrated distillation assembly on seawater, adding 0.5-1mmol / LPDS or 0.1 mmol / LPMS into the seawater, and then carrying out illumination distillation desalination on the seawater, the integrated distillation assembly comprises a photo-thermal conversion material, a water absorption material, a heat insulation material and a baffle plate; the baffle is fixed on the upper surface of the first heat insulation material, through holes are formed in the baffle and the first heat insulation material, the water absorption material is fixed in the through holes, one end of the water absorption material is flatly laid on the surface of the baffle, and the other end extends out of the first heat insulation material; the second heat insulation material is wrapped and fixed on the peripheries of the baffle and the first heat insulation material, so that one end of the water absorption material is fixed between the baffle and the second heat insulation material, and the photo-thermal conversion material is fixed on the water absorption material on the surface of the baffle. According to the invention, the oxidative degradation efficiency is greatly improved, and VOCs entering condensed desalinated water are reduced.

The invention discloses a device for treating waste brownification liquid by electro-catalysis. The device is characterized by comprising a degradation tank, an electrolytic bath, an extraction tank and a back-extraction tank, wherein the degradation tank, the electrolytic bath, the extraction tank and the back-extraction tank are sequentially communicated with one another by pipelines; a cationic catalysis tank with high oxidation capability is arranged inside the degradation tank; an anode with high oxygen evolution potential and a cathode with low copper separation potential are arranged inside the electrolytic bath. By selecting a cationic catalyst with the high oxidation capability, the device disclosed by the invention has the advantage of improving the oxidative degradation capability on an organic additive and the release degree of copper ions in the waste brownification liquid so that the recycle rate of copper in the waste brownification liquid is increased.

The invention belongs to the field of catalyst and environmental water pollution treatment, and in particular relates to a supported metalloporphyrin / phthalocyanine catalyst, its preparation method and application. The present invention simply and efficiently realizes the loading of metalloporphyrin / phthalocyanine on the carrier material by mechanochemical method, greatly reduces the agglomeration of metalloporphyrin / phthalocyanine, and because the carrier material and metalloporphyrin / phthalocyanine There is an electron transfer between cyanines, which changes the electron cloud density around the central metal ion of porphyrin / phthalocyanine, promotes the heterolysis of hydroperoxides, and enhances the activity. The present invention loads the metalloporphyrin / phthalocyanine catalyst on the surface of the carrier material through the mechanochemical method, and the obtained loaded metalloporphyrin / phthalocyanine catalyst is more effective for organic pollutants than the metalloporphyrin / phthalocyanine catalyst before loading. The oxidative degradation performance is greatly improved, and the applicable pH range of the catalyst is also greatly expanded.

The invention discloses an integrated fluidized catalytic oxidation tower and a method for deeply treating wastewater by using the same. A balance adjusting unit of the catalytic oxidation tower is connected with a water distribution pipe at the bottom of a catalytic oxidation unit through a pipeline; the outer side of the upper part of the catalytic oxidation unit is provided with a circulating water tank, the outer side of the circulating water tank is provided with an intermediate water tank, and the top of the circulating water tank is connected with the intermediate water tank through an overflow port; the intermediate water tank is connected with a water distribution pipe of a coagulation sedimentation unit through a pipeline, and a water collecting basin is connected with the balance adjusting unit through a pipeline; the balance adjusting unit is connected with the water collecting basin through a first overflow pipe, and the intermediate water tank is connected with the water collecting basin through a second overflow pipe; a water outlet of a water outlet tank is connected with a clean water basin through a water outlet pipe. By using the integrated fluidized catalytic oxidation tower, the mass transfer efficiency and the chemical reaction speed are effectively increased, the oxidative degradation effect for organic pollutants in wastewater is improved, the dosage of a Fenton reagent can be reduced, and the yield of chemical sludge in the later coagulation process can be reduced.

The invention provides a triazole modified ferric oxide photocatalyst and a preparation method thereof, and belongs to the technical field of environmental governance, the triazole modified ferric oxide photocatalyst is obtained by modifying ferric oxide with a triazole compound; in addition, photocatalytic activity screening of the triazole modified ferric oxide photocatalyst is also carried out, and research on the relationship between the illumination time of the triazole modified ferric oxide photocatalyst and the degradation rate of methyl orange is carried out at the same time. The triazole modified ferric oxide photocatalyst prepared by the invention has very high light utilization rate, photocatalytic activity and organic matter oxidative degradation capability, and can be used for oxidative degradation of organic pollutants in the technical field of environmental governance.

The invention provides a white graphene modified polystyrene composite material and a preparation method thereof. The white graphene modified polystyrene composite material is prepared from the following raw materials in parts by weight: 90-110 parts of styrene, 0.5-10 parts of polymer modified white graphene, 0.05-2 parts of flame retardant, 0.05-2 parts of antioxidant and 0.01-0.1 part of initiator. The white graphene modified polystyrene composite material has higher mechanical strength while having flame retardance and smoke suppression performance.