337 results about "Catalytic ozone" patented technology

The invention discloses a catalytical ozonization catalyst prepared by utilizing multi-source sludge and an application thereof, and establishes a method for preparing a sludge group active carbon catalyst for catalytical ozone oxidation organic industrial waste water. The method comprises the following steps of: utilizing multi-source sludge such as surplus sludge generated by urban sewage factory biochemical treatment and a metal sludge generated by a Fenton oxidation method, preparing a skeleton which is a sludge group active carbon through steps such as organic substance adding, actification, dehydration, drying, mixing, roasting and screening, wherein a surface layer contains a solid catalyst of metallic oxide, and the ratio of the sludge group active carbon and the metallic oxide in parts by weight is 1:(0.3-0.5). The catalyst is used for catalyzing ozone oxidation treatment organic industrial waste water and has higher catalytic activity and stability, the processing range is wide, the realization and popularization and application are easy, and the economic benefits are improved in an organic industrial waste water processing procedure.

The invention relates to a preparation method of a catalyst, in particular to a preparation method of a load-type metallic oxide ozone catalytic oxidation catalyst, which is characterized by comprising the following steps of (1) selecting ceramic filter bulbs to serve as a carrier, washing through deionized water, soaking for 24h by using diluted hydrochloric acid, and washing through the deionized water to effluent neuter for stoving; (2) dipping for 24h in nickel nitrate solution with the concentration of 0.1-1.0mol / L and drying; (3) roasting for 5h in a muffle furnace at 500 DEG C to obtain roasting objects; and (4) washing through the deionized water and stoving to obtain the load-type metallic oxide ozone catalytic oxidation catalyst. The preparation method is simple, low in cost, capable of greatly improving oxidation rate and efficiency of ozone on organic pollutant, good in product stability and capable of repeatedly using, and having important significant on application and dissemination of catalytic ozonation techniques.

The invention relates to water deep treatment technology of heterogeneous catalytic ozonation depollution. With the combination of catalytic ozonation depollution technology with membrane filtration technology, a novel, high-efficient, and economical catalytic ozonation water deep treatment technology is provided, which combines the advantages of the two technologies, overcomes their disadvantages, effectively improves the ozone utilization rate and the ozone oxidation capability, reduces some toxic and harmful substances generated due to incomplete oxidation, alleviates the problem of ceramic membrane contamination, and prolongs the system operation period. An experiment device mainly comprises three parts: an ozone generation device, a ceramic membrane device, and a computer data acquisition and analysis system; an ozone outlet of the ozone generation device is connected with a water inlet valve of the ceramic membrane assembly through a silicone flexible pipe to realize the coupling of the two system. The method of the invention can improve the purifying effect of routine water treatment technology, and provides novel, high-efficient and cheap water deep treatment technology for enhanced removal of low-concentration high-toxicity refractory organic pollutants in water.

The invention discloses an activated carbon catalytic ozonation device and a sewage treatment process thereof. The device comprises a reaction tank, wherein the reaction tank is partitioned into a rising reaction zone, a falling reaction zone and a separation zone from inside to outside in sequence by virtue of guide cylinders; the bottoms of the three zones are communicated and are used as an activated carbon storage zone; the rising reaction zone is internally provided with an ozone and water input device; the tops of the rising reaction zone and the falling reaction zone are communicated; an annular flow director is arranged at the communicating part of the bottoms of the falling reaction zone and the separation zone; at least a part of the bottom of the flow director stretches into the activated carbon storage zone; an inclined guide surface is arranged at the part below the separation zone, of the top of the flow director. By adopting the activated carbon catalytic ozonation device, the activated carbon can be in a circulation fluidized state, the porosity of an activated carbon bed is improved, the effect of catalysis reaction of ozone molecules and organic pollutants on the surface of activated carbon is improved, the capability of activated carbon catalytic ozonation is improved, the utilization rate of ozone is increased, and the antifouling effect is improved.

The invention provides a method for treating reverse osmosis concentrated water. In the method, the process flows of a laminated filter, heterogeneous catalytic ozone oxidation reaction, an ozone destruction tower and a biochemical reaction tank are adopted. The method comprises the following steps of: adding sodium hypochlorite into the reverse osmosis concentrated water produced in the recycling process of oil refining production wastewater subjected to biochemical treatment and membrane process treatment, sterilizing, filtering by using the laminated filter, fully mixing with ozone, adding into a reactor filled with a zirconium titanate catalyst and performing ozone oxidation; and performing biochemical treatment by using a biochemical reactor with special biological bacteria, wherein the chemical oxygen demand (COD) of effluent after the reverse osmosis concentrated water is treated is below 60mg / L.

A process for removing pollutant from water features use of an activated carbon catalytic ozone oxidizing unit and a biologic activated carbon unit, and includes introducing the water to be treated and the ozone to the activated carbon catalytic ozone oxidizing reactor, mixing, flowing up, staying in activated carbon layer for 5-30 min for removing or converting the organic pollutants, flowing inthe biologic activated carbon reactor, and staying for 5-90 min for removing and degradating the organic pollutant. Its advantages are high utilization rate of ozone and high effect.

The invention discloses a method for oxidizing organic wastewater by ozone, light, electricity and a catalyst. During reaction, ozone is introduced from an aerator arranged at the bottom of the reaction, active carbon-carried nano titanium dioxide is used as an anode, a carbon used as a cathode, and an ultraviolet lamp is arranged on the top or inside of the reactor; the cell voltage is 1 to 20 volts, the time for the action of an active carbon-carried catalyst and a water solution containing arsenic, the air and the ultraviolet lamp is 10 to 120 minutes, and the mass ratio of an added catalyst to waste water participating in reaction is between 1:200 and 1:20; a method for the ozone photoelectrocatalytic deep treatment of organic wastewater uses the active carbon-carried nano titanium dioxide as an anode to promote the photoelectrocatalysis and to catalyze the ozone to generate high- oxidizability free radicals; and organic substances difficult to treat can be fully degraded under the concerted action of light, electricity and the ozone, and the method has more utilization value than single ozone catalytic oxidation and single photoelectrocatalysis.

The invention provides a catalyst for catalyzing ozone to oxidize volatile organic compounds. The catalyst comprises a nickel foam carrier and a MnOx-SnOx-CeOx-SbOx compound oxide. A preparation method is characterized in that the nickel foam is impregnated or coated with a metallic salt solution and is roasted at high temperature to obtain the catalyst for catalyzing the ozone to oxidize the volatile organic compounds. The catalyst has the advantages of high catalytic activity, low price and better mechanical and chemical stability, and can be used for catalyzing the ozone to oxidize and purify the volatile organic compounds in waste gases and indoor air.

The invention relates to the technical field of exhaust gas treatment, in particular to an exhaust gas purifying device which comprises an ultraviolet catalytic device, an ozone treatment device and a spraying device. A gas outlet of the ultraviolet catalytic device is communicated with a gas inlet of the ozone treatment device, and a gas outlet of the ozone treatment device is communicated with a gas inlet of the spraying device; the ultraviolet catalytic device is provided with an ultraviolet photolysis cavity and an ultraviolet lamp tube arranged in the ultraviolet photolysis cavity, and a photocatalyst is arranged in the ultraviolet photolysis cavity and is irradiated by ultraviolet light of the ultraviolet lamp when exhaust gas is treated; and the ozone treatment device is provided with an ozone decomposition cavity, and the ozone decomposition cavity is provided with a composite catalyst for catalysis of decomposition of ozone. Compared with the prior art, ultraviolet catalyzed photolysis, treatment of residual ozone, spraying of waste solution and absorption of exhaust gas can be combined organically, organic pollutants can be decomposed efficiently, no secondary pollution of ozone can be caused, and the exhaust gas purifying device has the advantages of rapid and efficient treatment of exhaust gas, simpliness in operation and good purifying effects.

The invention relates to an activated carbon-loaded nano-zinc oxide ozonation catalyst and preparation and use thereof. The catalyst is prepared by loading nano-zinc oxide on the surface of modified activated carbon. The modified activated carbon carrier is prepared by cleaning activated carbon with a sodium hydroxide solution, then dipping with dilute nitric acid, cleaning with deionized water and then drying. According to the catalyst disclosed by the invention, active components are prepared by adopting a coprecipitation method and taking zinc nitrate as a precursor; zinc hydroxide precipitate is generated by using a saturated zinc nitrate solution and a saturated urine solution and is attached to the surface of the modified activated carbon, and then the activated carbon the surface of which is attached with the zinc hydroxide is dried and roasted to prepare the oxidization catalyst. That is, the adsorption property of the activated carbon is reserved, and nano-zinc oxide microparticles having ozone catalysis activity are loaded in the activated carbon. Under the synergistic effect of adsorption and activation, organic pollutants in water can be adsorbed at high efficiency, and meanwhile, ozone molecules can be catalyzed and activated to produce free radicals having high oxidizability, thereby obtaining a better catalytic ozonation effect.

The invention relates to a method of catalytic ozone oxidation organic matter removal in water, which belongs to the water treatment technical field. The method solves the problems that: in the existing method of catalytic ozone oxidation organic matter removal in water, the utilization ratio of ozone is low, the organic pollutant is not enough oxidized, the cost is higher, and catalyzer is easily lost by adopting the metal catalytic ozone oxidation technology, the application is difficult to use in mass production, uneven surface exists on the solid catalyzer, and the inner diffusion velocity is lower. The method has the steps that: firstly, water containing the organic pollutant enters into an ozone contact tower; secondly, output water of the ozone contact tower enters into a catalyzing bed the inner part of which is filled with zerovalent ferric and filling material. The method solves the problems that uneven surface exists on the solid catalyzer and the inner diffusion velocity is lower, has the advantages of high catalytic activity, low cost, homogeneous catalysis oxidation and heterocatalysis oxidation of the catalyzer easily separating from water, improves the utilization ration of the ozone, and can be applied to the mass production.

The invention provides a preparation method of a manganese-based composite metal oxide ozonolysis catalyst, and belongs to the fields of catalysis and environmental protection. The method uses a redoxprecipitation process to synthesize the nano-fibrous manganese-based composite transition metal oxide catalyst. The preparation method of the catalyst has the advantages of simple process, mild conditions, and realization of high stability of catalytic ozonolysis. The catalyst prepared by the method disclosed in the invention has a high ozone removal catalysis activity, and can realize complete removal of ozone at normal temperature.

The invention relates to a waste water purification method and a reactor both adopting ozone oxidation catalysis and using compound suspended carrier. The compound suspended carrier takes suspended activated carbon as a carrier and the compound of copper, iron, manganese, cobalt, and nickel as an active component. The compound suspended carrier is placed in an ozone oxidation catalysis reactor in water processing techniques, water inflows continuously and the reaction is carried out, so that a multi-phase heterogeneous oxidation catalysis system taking the activated carbon as the carrier is established, thereby improving the capability of ozone in optionally oxidizing organic pollutants in waste water and the utilization ratio of ozone, and removing the color and odor of the organic pollutants in waste water. The invention suits the pre-oxidation on slightly polluted drink water sources and deep treatment on organic industrial waste water, and is particularly suitable for the deep treatment on non-degradable organic waste water having received secondary treatment to greatly reduce biotoxicity, organic pollutants, and color of the waste water, lead the waste water after being treated to be similar to tap water, and achieve the purpose of carrying out deep treatment on organic waste water.

The invention relates to an advanced water treatment technique for pollution removal through heterogeneous catalytic ozonation. Directed at the disadvantage that a conventional powdery catalyst is unfavorable for separation and easy to inactivate in a water phase, a construction method for a novel nanometer copper manganate spinel catalytic membrane reactor is provided. The construction method aims to combine heterogeneous ozonation with a ceramic membrane filtration technique, and utilizes active components (CuMn2O4) on a ceramic membrane catalytic layer to catalyze ozone so as to generate -OH with high oxidation capacity, wherein organic compounds can directly react with molecular ozone or react with -OH generated by ozone decomposition; meanwhile, an interception function of the ceramic membrane can assist to reinforce removal of 2-hydroxyl-4-methoxybenzophenone in water. In addition, ozone can react with humic acid and natural organic matters (NOMs) in the water, so the formation of membrane pollution is effectively controlled. A nanometer copper manganate spinel catalytic membrane provided by the invention has the following advantages: preparation process is simple; operation is convenient; a catalyst on membrane surface is uniformly distributed, so mass transfer efficiency is improved; and the membrane has potential application prospects in treatment of drinking water or wastewater containing pharmaceutical and personal care products (PPCPs).

The invention provides a landfill leachate processing process. Landfill leachate sequentially passes through a pretreatment system, a main body biological treatment system and a deep treatment system; the pretreatment system consists of a regulating pool, an adsorption pool and a coagulating pool; wastewater is pretreated sequentially through the devices; outlet water enters the main body biological treatment system; the main body biological treatment system comprises an anaerobic EGSB (expanded granular sludge bed) reactor, an A / O short-range nitratlon reaction pool and an anaerobic ammonia oxidation UASB (upflow anaerobic sludge blanket) reactor; the treatment devices perform real-time regulation control through a PLC (programmable logic controller) control system for denitrification decarbonization reaction; the outlet water enters the deep treatment system for further treatment; the deep treatment system comprises a secondary coagulating pool, a primary homogeneous catalysis ozone oxidation reaction pool, a MBR (meane biological reactor) secondary biological reaction pool and a secondary homogeneous catalysis ozone oxidation reaction pool; finally, organic matters, total nitrogen and ammonia nitrogen of the outlet water reach the discharge standard. The landfill leachate processing process has the advantages that efficient denitrification and carbon removal are realized; the energy is saved; the consumption is reduced; the operation is stable; meanwhile, the goal of zero concentrated liquid generation is realized.

The invention discloses a bicirculating catalytic ozone water-treatment device which solves the problems of reduced oxidation efficiency and the like caused because fluids inside the traditional device can only flow in a unicyclic way. The bicirculating catalytic ozone water-treatment device comprises three cylinders, wherein the three cylinders are concentrically arranged and form inner and outer bicirculation with strong catalytic ozonation and weak catalytic ozonation mutually separated in space; the outer circulation area decomposes the components contained in oxidable organics inside wastewater through active carbon catalytic ozonation with low catalytic characteristic by utilizing the adsorption characteristics of active carbon; and the inner circulation area realizes that hydroxyl radicals with oxidation efficiency higher than that of ozonation are generated through ultraviolet light and TiO2 concerted catalytic ozonation and oxygenizes organic molecules which are contained in the wastewater and difficult to degrade by utilizing the hydroxyl radicals. The bicirculating catalytic ozone water-treatment device disclosed by the invention can be used for realizing the space separation of organic pollutants contained in water according to difficulty degree, thereby improving the oxidation efficiency, shortening the hydraulic retention time and reducing the ultraviolet lamp and ozone consumption. The invention also provides a method for carrying out water treatment by using the bicirculating catalytic ozone water-treatment device.

The invention relates to the technical field of water treatment, and especially relates to a preparation method of a modified alumina carrier, a catalytic ozone oxidation catalyst, and an application of the catalyst. The preparation method of the modified alumina carrier comprises the following steps: providing an alumina substrate; carrying out primary modifier spray immersion, primary drying and primary calcination on the alumina substrate, and naturally cooling the obtained calcined alumina substrate to room temperature; and carrying out secondary modifier spray immersion, secondary drying and secondary calcination on the alumina substrate, and naturally cooling the secondary calcined alumina substrate to obtain the modified alumina carrier. The catalytic ozone oxidation catalyst prepared from the modified alumina carrier greatly improves the COD removal rate, so the sewage treatment cost is reduced; the dissolution rate of metal ions is greatly reduced, so the service life of the catalyst is prolonged; and the catalyst has the advantages of low cost and simple preparation method, and is very suitable for industrial production.

The invention provides an effectiveness research on catalytic degradation of mesoporous perovskite type oxide / silicon dioxide to an ultraviolet stabilizing agent in water, belonging to a water treatment technology and the field of environment functional materials. A mesoporous perovskite type oxide / silicon dioxide catalyst has a shape of powder or particle; and by using a template agent--cetyl trimethyl ammonium bromide (CTAB), nitrate of metals, citric acid and an organic silicon source--tetraethoxysilane (TEOS) as main raw materials, a mesoporous perovskite type oxide catalyst is prepared, so the ability of degrading the ultraviolet stabilizer in a heterogeneous catalytic oxidation technology is improved. Directed at the problem of poor removal effect of conventional wastewater treatment on the ultraviolet stabilizing agent PBSA, the invention provides novel mesoporous perovskite type oxide / silicon dioxide as a catalyst, and realizes successful application of the novel mesoporous perovskite type oxide / silicon dioxide in a catalytic ozonation technology and a persulfate catalytic activation technology; meanwhile, by adopting an in-situ hydrothermal method for one-step synthesis of a mixture of a mesoporous material and perovskite type oxide, simple and convenient operation and excellent catalytic effect are obtained, and reinforced removal of difficultly-degrading pollutants is realized.

The invention discloses a catalytic ozonation fluidized bed reactor for efficiently removing CODcr in wastewater and belongs to the field of sewage treatment equipment. The reactor comprises a fluidized bed reactor body, a solid-liquid separation system, an ozone oxidation system, a powdered catalytic oxidant addition system and a powdered catalytic oxidant recycling system. The reactor has the outstanding capacity of removing difficultly biodegraded organic pollutants in wastewater in the industries such as coal chemical industry, steel, biological pharmacy and printing and dyeing, can serve as a pretreatment system of a membrane filtration system and can also be used for industries and regions executing the high COD emission standard. The COFR technology has the advantages of low investment cost, simple structure and simplicity and convenience in operation, the COD removal rate is high, secondary pollution is avoided, the modular combination mode is convenient to design and implement, the COFR reactor can be combined with other water treatment methods, the problems that the sewage treatment in the coal chemical industry, pharmacy, printing and dyeing and other related industries does not reach the standard and the concentrated water in nanofiltration reverse osmosis and other processes cannot be treated can be effectively solved, and the reactor is an effective and practical novel technology and is widely applied and popularized.

The invention aims to provide a method and device for strengthened ozone treatment of nitrobenzene waste water in a high gravity filed, belongs to the field of nitrobenzene organic waste water treatment, and solves the problem of low ozone utilization ratio of a conventional rotating packed bed in the ozonation technology application. The method comprises the following steps: exhaust gas generated by ozonidation-oxidation reaction in the rotating packed bed and waste water are introduced into a hypergravity-electrolysis unit reactor, ozone and oxygen in the exhaust gas in the hypergravity-electrolysis unit reactor are reduced into hydrogen peroxide through electrocatalytical reduction; the generated hydrogen peroxide, along with the waste water, enters the rotating packed bed again in a circulation manner to be subjected to ozonidation-oxidation reaction; ozone is catalyzed to generate hydroxyl free radicals due to the fact that the content of the generated hydrogen peroxide is in the ozone decomposition acceleration concentration range, therefore organic matters in the waste water are decomposed through mineralization; the problem of exhaust gas treatment is solved, the recycle of the exhaust gas resources can be realized, the ozone can be catalyzed, the oxydative degradation efficiency is improved, when the method is compared with a process with a treatment process without hypergravity electrolysis stage, the oxidation efficiency is improved by 50%, the water treatment cost is reduced by 30%.

The invention discloses a method and device for simultaneously desulfurizing and denitrifying flue gas by photo-catalysis and oxidation. The method comprises the following steps: firstly, enabling the flue gas to enter a vacuum ultraviolet irradiation region; under high-energy ultraviolet irradiation, generating active free radicals and ozone for oxidizing to remove partial SO2 and NOx in the flue gas; then enabling the flue gas to penetrate through a whole type photocatalyst bed layer; purifying and removing the SO2 and the NOx under the synergistic effect of the photo-catalysis and oxidation and catalytic ozonation; enabling acid-containing flue gas to enter an atomization absorption region; under an absorption effect, washing and removing desulfurizing and denitrifying products, namely H2SO4 and HNO3. The device for desulfurizing and denitrifying the flue gas is composed of the vacuum ultraviolet irradiation region, the whole type photocatalyst bed layer and the atomization absorption region. By adopting the catalyst bed layer designed by the invention, 100 percent of ultraviolet light can be illuminated to the surface of a catalyst, and nearly 100 percent of the surface of the catalyst can also receive the ultraviolet light; the problem that the light illumination utilization rate in a traditional photo-catalysis waste gas treatment process is not ideal is solved.

The invention discloses a landfill leachate zero concentrated solution deep treatment system and method. The landfill leachate zero concentrated solution deep treatment system comprises a flocculation catalytic filtration reactor, a first catalytic ozonation reactor, a high-speed turbulent flow reactor with a denitrification function, and a second catalytic ozonation reactor which are connected in sequence. The method is a deep treatment process that the system is adopted to treat landfill leachate wastewater which is treated by using a front process. With effective combination of techniques of high-efficiency biochemistry, high-class oxidation, catalytic reduction and the like, the landfill leachate after the biochemical treatment is deeply treated, so that the defects of a conventional landfill leachate deep treatment process are overcome while corresponding emission standards are met, and a zero concentrated solution treatment process is achieved in deed.

The invention provides a method and device for degrading nitrobenzene waste water in a high gravity field through catalytic ozonation, belongs to the technical field of nitrobenzene waste water ozonation degradation, and solves the problem that sedimentation of ferrous ions is caused when the initial pH value of the waste water is 7 to 10 in the conventional catalytic ozonation treatment method of nitrobenzene waste water. The method comprises the following steps: a ferrous iron chelating agent is mixed with nitrobenzene waste water of which the initial PH value is 7-10, the mixed solution is introduced into a high gravity reactor to react with ozone gas, and ozone dissolved in catalytic water generates hydroxyl free radicals, so that nitrobenzene compounds are degraded through ozonation. When the method provided by the invention is compared with the conventional bubbling reaction, the mass transfer rate of ozone is improved by two times; and besides, the ferrous iron chelating agent is combined with an ozonation process, therefore, ozone in the waste water is quickly decomposed, a lot of hydroxyl free radicals are generated, organic pollutants are quickly decomposed, and the oxidation efficiency is doubled; the process is simple, the treatment cost is reduced to the largest extent, the removal rate of nitrobenzene compounds reaches 95% or above, the mineralization rate reaches 80%, and the utilization ratio of ozone is improved by 1 to 2 times.

The invention provides a method for preparing a ZnO / g-C3N4 ozone composite catalyst and application. The method comprises the following steps: providing a first solution, wherein the first solution comprises ZnO, g-C3N4 and a dispersing agent; the ZnO and the g-C3N4 are uniformly dispersed in the first solution; performing stirring evaporation to dry the first solution, and removing the dispersing agent in the first solution so as to obtain a mixture; drying the mixture, grinding, and performing high-temperature calcinations, thereby obtaining the ZnO / g-C3N4 ozone composite catalyst. The ZnO / g-C3N4 ozone composite catalyst prepared by using the method can be used for catalyzing ozone oxidization organic pollutants; as the ZnO / g-C3N4 ozone composite material is applied to the ozone catalysis process, dissolution of metal ions after reaction of a conventional metal ozone catalyst can be effectively reduced, and reaction activity and stability of the catalyst can be improved.

The invention discloses a preparation method of a composite metal oxide loaded catalyst and an application of the catalyst to the field of waste gas treatment, and belongs to the technical field of industrial waste gas. The preparation method includes the steps: performing equivalent-volume impregnation on activated carriers in composite metal nitrate impregnation solution containing manganese, cobalt, cerium, iron, copper and nickel; performing ultrasound, drying and roasting on the impregnated carriers to obtain the catalyst loaded the composite metal oxides. The preparation method is green,environmentally friendly, simple to operate and easily industrialized. NO in flue gas is transformed into NOx at low temperature by the aid of the catalyst prepared by the method, the molar ratio ofO3 to NO in 500ppm NO is 0.6, the relative humidity of the flue gas is 10%, reaction temperature is 100 DEG C or less, MnOx-CeOx-Al2O3 serves as a catalyst after reaction for 90 minutes, the transformation rate of the NO can be kept about 40%, MnOx-Al2O3 serves as a catalyst, and highest removal rate can reach 80%, so that ozone oxidation is effectively catalyzed.

The invention relates to a catalytic ozone oxidizing method for industrial wastewater deep treatment. The method comprises the following steps: calcining raw material mainly containing iron and carbon in the reducing atmosphere to form iron-carbon filler, wherein the filler finished product is of particle shapes, has a particle diameter phi of 5-15mm, and comprises the following effective components in percentage by weight: 40-65 percent of reduction-state iron, 15-25 percent of carbon, 5-25 percent of transition metal; performing acid and oxidation modifying on the iron-carbon filler: reacting on a table for 0.5-5.0 hours in HNO3 with concentration of 0.5-5mol / L at 30-60 DEG C; forming a filling table by using the modified particles, arranging an ozone distribution device under the filling to form a catalytic zone reaction tank; catalyzing ozone to form an advanced oxidizing method in the neutral condition by using secondary bio-treated effluent as a processing object so as to deep remove organic matters out of the industrial waste water, wherien the hydraulic staying time is controlled to be 20-360min.

The invention discloses a bi-component composite type metallic catalyst and application thereof, the bi-component composite type metallic catalyst comprises a carrier and active components loaded on the carrier. The carrier is active aluminum oxide, the active components are cupric oxide and ruthenium. Compared to the prior art, the preparation of the bi-component composite type metallic catalyst prepared by the invention is simple, though a small amount of precious metals are doped, the catalytic activity of the catalyst can be improved greatly, the costs are low, the activity is good, the application prospect is good. The bi-component composite type metallic catalyst provided by the invention can be used for removing acetophenone in the water by catalytic ozonation, the efficiency of removing acetophenone by ozone can be improved greatly, and the ozone utilization ratio can be improved.

The invention discloses an inorganic film for treating organic waste water under catalysis of ozone and a preparation method of the film. The preparation method mainly comprises preparation and modification treatment of a supporting body and a separation layer of the film, and is characterized by comprising the step of respectively loading different types of catalysts on the surfaces of the modified supporting body of the inorganic film and the modified film separation layer so as to form a multi-level three-dimensional catalysis composite. The three-dimensional catalysis composite prepared by the method not only can be used for achieving a solid-liquid separation function of an ordinary inorganic film, but also has the function of catalyzing ozone decomposition, so that the oxidation efficiency and the degradation efficiency of ozone on organic pollutants in waste water can be improved. Furthermore, the chemical components of the supporting body and the film separation layer are modified, so that film holes are smooth, the pressure drop is small, the blocking rate of pollutants is reduced, and the service life of a film assembly is prolonged.

The invention provides a preparation method of a catalyst for effectively catalyzing and oxidating medical contaminations in water, comprising the following main steps of dissolving a certain amount of FeCl3*6H2O and a certain amount of carbamide in deionized water; subsequently adding a certain quantity of mesopore alumina carriers; adjusting the pH value of the solution to 1.6 by hydrochloric acid; heating the solution in a water bath under the temperature of 100 DEG C for 2 to 6 hours; subsequently naturally cooling the solution to room temperature; and taking out residuals and washing the residues by the deionzed water. According to the above steps, the catalyst with iron content of 1-15wt% is synthesized and a Beta-FeOOH / MA sample is obtained. Compared with the independent ozone oxidation, the catalyst can effectively improve the mineralization efficiency of the ibuprofen in the water, thereby having good stability.

The invention discloses a method for multiphase catalytic ozone treatment of residual activated sludge, wherein the method comprises the steps: (1) adding an ozone catalyst into a sludge concentration tank, wherein the ozone catalyst comprises a carrier and active metal components loaded on the carrier, a transition metal and a rare earth metal are used as the active metal components, the transition metal is selected from non-noble metals of fourth and fifth periods of the periodic table of elements, the carrier takes 150-300 mesh activated carbon as a core and amorphous alumina as a shell, the amount of the activated carbon accounts for 10%-70% of the weight of the carrier, and the amount of alumina accounts for 30%-90% of the weight of the carrier; (2) introducing ozone into the sludge concentration tank of the step (1), and making the sludge decomposed; and (3) carrying out solid-liquid separation of the sludge after treatment in the step (2), and removing water. By adding the ozone catalyst into the conventional sludge concentration tank, uniform mixing is performed, then ozone is introduced, organic matters in the sludge can be quickly destroyed and decomposed, and the sludge quality and volume are effectively reduced; and the method is economical and practical, and easy to operate and manage, and has no secondary pollution.