201results about How to "Easy to scale up" patented technology

The system includes a switching device, a public phone server, a accounting center, public phone operation and telephone terminal. Under data control of the public phone operation center, telephone terminals connected to switching device are communicated to the public phone server. The method authenticates call initiated by user and settles accounts of user. The wideband public phone system provides features of opening, expandability, intelligent, easy of maintenance, good ratio between cost and performances, reliability and security etc.

A catalyst for preparing low-carbon olefins by one-step conversion of synthetic gas and a preparation method thereof relate to catalysts; the catalyst is made from 20-60% of a zirconium-based solid solution,30-70% of a double-micropore zeolite molecular sieve and 0.1-10% of metal oxides; the preparation method comprises: adding salt compounds of at least one element from IA, IIIA, VIIB, IB, IIB and the like into deionized water or alcohol to obtain solution A having a mass concentration of 0.1-15%; adding the zirconium-based solid solution into the solution A, heating, drying by distillation, and drying to obtain solid powder; adding the solid powder and the double-micropore zeolite molecular sieve into ethylene glycol, ultrasonically dispersing, and moving a filtered and washed sample to a vacuum drying box, drying at 50-100 DEG C for 2-24 h, calcining in a muffle furnace, and tableting obtained solid sample to obtain the catalyst.

The invention provides a novel preparation method of a high-performance continuous ZIF-8 (zero insert force-8) film for the high-performance separation and purification of gas, and mainly aims at solving the combination problem among a continuous even growth film, a film and a carrier of the ZIF-8 film. The preparation method is mainly characterized by comprising the following steps of: previously introducing growth point and a combination point on the surface of a porous carrier to form a thin layer of zinc oxide coating layer taken as a finished film, and growing in an inducing way to form the continuous even ZIF-8 film. An active point of the film homogeneous nucleation is introduced, the combination force problem between the film and the surface of the carrier is solved, and the surface of the carrier is modified by the coating layer, so that the high-quality film can be preferably formed. Compared with the conventional preparation method of the ZIF-8 film, the novel method adopted by the invention not only is high in film-forming effective mass, simple in process, and convenient for large-scale preparation and amplification, so that the method has a potential application prospect and a wide application value.

The invention relates to catalysts, in particular to a catalyst for preparing arene from synthesis gas through one-step conversion and a preparation method of the catalyst. The catalyst is prepared from, by mass, 30%-70% of zirconium-containing perovskite, 30%-60% of multistage porous zeolite molecular sieve and 0.1%-10% of oxide additive. The preparation method comprises the steps that 1, a salt compound of at least one of IA, IIA, VB, VIB, VIIB, IIB and IVA family elements and rare earth elements is weighed according to the components of the catalyst and added into water or alcohol to be prepared into a solution A; the multistage porous zeolite molecular sieve is weighed and added into the solution A, suction filtration, washing and filter cake drying are carried out to obtain solid powder, then the solid power and the zirconium-containing perovskite are mixed, ground and calcined, hydrogen or mixed gas of hydrogen and inert gases is introduced, heating is carried out for reduction, the reduced solid sample is tablet molded, and the catalyst is prepared.

The invention discloses a microchannel plate-fin type water vapour reforming reactor for hydrogen production, wherein the main unit is a microchannel plate-fin structure, with a plurality of sealing heads through soldering, the reactor consists two combustion chambers, a reforming chamber and two gasification chambers, whereint he hydrogen-rich gas and air are subject to catalytic combustion reaction in the combustion chamber, discharging a vast amount of heat, which is transferred to the reforming chamber and the two gasfication chambers through a heat guide board, the raw material liquid first enters the two gasification chambers of the hydrogen production reactor, then enters the reforming chamber after being gasified, finally is reformed in the reforming chamber to obtain gaseous mixture of hydrogen gas that meets requirement.

Provided is a classified-desliming pressurized-feeding three-product dense medium cyclone coal preparation process. The process comprises the steps that wet classification and primary desliming are carried out on raw coal after prescreening, gangue predischarging and breaking are carried out on the raw coal, secondary desliming is carried out on the screen underflow of the raw coal after the screen underflow is concentrated, the oversize products of the secondary desliming and the screen underflow of the primary desliming are together fed in a pressurized three-product cyclone, three products are obtained after separation, and clean coal, middle coal and gangue are obtained after medium separation and dehydration are carried out on the three products. Part of qualified suspension liquid and dilute suspension liquid are obtained when the medium separation is carried out on the three products, magnetic concentrate is obtained after the dilute suspension liquid is recovered by a magnetic separator, and the magnetic concentrate and the qualified suspension liquid are directly fed in a medium blending barrel. The magnetic tailings of the dilute suspension liquid and the undersize mixtures of pre-desliming, the overflow of concentration classifying equipment and a secondary desliming screen enter a coal slime recovery processing system together. The process is high in separation efficiency, flexible in product structure, low in producing and operating cost and prone to achieving the large-scale single system, the modularization and the integrating intellectualization of plant layout.

The invention discloses a method and a device of providing parking service to vehicles without license plates. The method comprises steps that information about a current vehicle driving into an entrance lane transmitted by a vehicle detection device disposed on an entrance of a parking lot is received, and therefore a license plate identification device disposed on the entrance of the parking lot is used to identify the license plate information of the current vehicle; when the identification result of the license plate identification device is that the current vehicle does not have the license plate or the license plate information cannot be identified, a provisional certificate disposed on the entrance of the parking lot is used to output a provisional certificate, which is received by the owner of the current vehicle; the provisional certificate at least comprises the entrance identification information, the entrance time information, and the parking lot information of the current vehicle; when the above mentioned owner of the current vehicle transmits the information of receiving the provisional certificate, the current vehicle is released to enter the parking lot. The effective parking service is provided to the vehicles without the license plates, and the competitiveness and the benefits of the parking lot are improved.

The invention discloses a self-heating type alcohol reforming hydrogen production micro channel reactor with the micro-lug boss array structure. Three layers of platy reaction carriers are all provided with micro-lug boss array structures; an upper layer and a lower layer are single-side micro-lug boss array structures; a middle layer is a double-side micro-lug boss array structure; the micro-lug bosses are arranged in the mode of parallel array; the three layers are cascaded to form a reaction channel with an inlet of 90 degrees; both ends of the channel are respectively provided with connector lugs; the gas inlet is provided with a detachable adapter and an outlet is provided with a fixed-type adapter. An upper layer channel is a catalytic reforming hydrogen production channel, and a lower layer channel is a combustion channel. The two layers of channel structures both adopt an open structural type being beneficial for the sediment of the catalytic coating. Fuel gases such as hydrogen and the like are combusted in the combustion channel and generate lot of heat which is transferred into the catalytic reforming hydrogen production channel by the middle layer of the reactor so as to meet the requirement of the steam reforming hydrogen production reaction; the reactor can produce hydrogen in a self-heating type. The invention increases the specific volume of the reactor and increases the yield of the alcohol reforming hydrogen production.

The invention discloses a directly-prepared ultrahigh-purity carbon nanotube and a preparation method thereof, belonging to the technical field of carbon nanotubes. Under the condition that purification is not required, the purity of the carbon nanotube is greater than 99.7 weight percent, the tube diameter is between 0.8 nanometer and 30 nanometers, the specific surface area is between 200 m<2> / g and 500 m<2> / g, the agglomeration density is between 30 kg / m<3> and 150 kg / m<3> and the agglomeration particle size is between 20 microns and 150 microns. A method for directly preparing the ultrahigh-purity carbon nanotube by adopting a chemical vapor deposition method comprises the following steps of: dispersing catalyst crystal grains generated with a liquid phase method onto the surface of an inert carrier, drying and baking; cracking hydrocarbon with 1-6 carbon atoms in a fluidized bed reactor to generate a carbon nanotube; and separating the inert carrier from the generated carbon nanotube at a higher air speed. The carbon nanotube obtained with the method has the purity between 99.7 percent and 99.9 percent, and has the advantages of high carbon nanotube quality, no need of removing impurities by acid treatment, low cost and easiness for amplification and preparation.

The invention relates to the field of smart homes, and discloses a smart home system and a data interaction method thereof. In the invention, the smart home system includes several smart home nodes. A terminal accesses the smart home system through a smart home node. Each smart home node has a broadcast monitoring state and a connecting state; if the smart home node is connected with the terminal, the smart home node is switched from the broadcast monitoring state to the connecting state; if the smart home node is disconnected from the terminal, the smart home node is switched from the connecting state to the broadcast monitoring state; in the broadcast monitoring state, the smart home node sends broadcast packets to other smart home nodes or terminals and monitors information sent by the other smart home nodes; and in the connecting state, the smart home node also receives and forwards data packets of the terminal. According to the smart home system and the data interaction method thereof, the flexibility, the validity and the interference immunity of data transmission in the smart home system are raised.

The invention relates to a preparation method of a lithium-copper composite negative electrode foil piece. An intermittent local pressure enhancement method is adopted for uniformly adhering lithium metal foil pieces on the surface of a copper foil, and a lithium-copper composite negative electrode foil piece is formed. The preparation method comprises the following concrete steps: clamping the copper foil between the lithium metal foil pieces to form a lithium foil / copper foil / lithium foil sandwich layer; adopting common rolling equipment, starting a traction system, and enabling the lithiumfoil / copper foil / lithium foil sandwich layer to pass through a grinding roller, so as to form intermittent local pressure on the lithium foil / copper foil / lithium foil sandwich layer, wherein the pressure range is 0.05-5MPa, and a pre-compounded lithium foil / copper foil / lithium foil sandwich slice is formed; and enabling the pre-compounded lithium foil / copper foil / lithium foil sandwich slice to pass through the grinding roller again, and applying pressure for shaping, wherein the pressure range is 0.02-5MPa, so that the lithium-copper composite negative electrode foil piece is obtained. The preparation method provided by the invention has the beneficial effects that layer-to-layer contact of the prepared lithium-copper composite negative electrode foil piece is uniform, contact of a lithiummetal negative electrode with the copper foil is further improved, and the problem that the lithium metal foil piece and the copper foil are infirmly bonded is avoided, so that outage of lithium metal in a working process of a battery is prevented.

The invention discloses a method for synthesizing (trans)-4-alkyl-3-alkene biphenyl derivative monomer liquid crystals, and belongs to the field of the preparation of monomer liquid crystal materials. The method comprises the following steps of: performing condensation of para-bromo cinnamaldehyde or 3-(4-bromo-phenyl)-propionaldehyde serving as a raw material and alcohol to prepare acetal, and performing a cross-coupling reaction of the acetal and 4-alkylbenzene borate in solvent under the catalytic action of palladium to obtain a biphenyl intermediate; and removing protective group alcohol of the biphenyl intermediate to produce an intermediate, performing a witting reaction of the intermediate and alkyltriphenylphosphonium halide in the presence of potassium tert-butoxide to produce a (cis, trans)-4-alkyl-3-alkene biphenyl derivative, and performing the inversion of cis and trans configuration to obtain the (trans)-4-alkyl-3-alkene biphenyl derivative monomer liquid crystals. The method has the advantages of low cost, high quality of products and mild reaction condition, and the expanded production is easy to perform. Therefore, the method is particularly suitable for the industrial production of the (trans)-4-alkyl-3-alkene biphenyl derivative monomer liquid crystals.

The invention discloses an amphiphilic acid-sensitive ternary molecular brush polymer constructed acid-sensitive nanocapsule of which the general formula is disclosed in the specification, wherein A is a polymer main chain, B is a lipophilic high-polymer side chain, C is an acid-sensitive high-polymer side chain, D is a hydrophilic high-polymer side chain, and the side chains B, C and D are randomly grafted on the main chain A; and the amphiphilic acid-sensitive ternary molecular brush polymer is dispersed in an oil / water two-phase system to form the stable acid-sensitive nanocapsules. The invention solves the problem that the traditional intelligent nanocapsule can not easily and effectively regulate the substance release rate; the emulsion self-assembly process for preparing the nanocapsule is simple to operate, and can easily implement large-scale preparation; and the prepared hollow acid-sensitive nanocapsule has high coating capacity. A-g-(B-r-C-r-D).

The invention discloses a dry-process deslagging fluidized bed gasification reaction device which comprises a reactor body, a multi-stage cyclone separating device, an air distribution device, a feed system and a return system. The dry-process deslagging fluidized bed gasification reaction device disclosed by the invention adopts a circulating fluidized bed reactor as a gasification reaction body, realizes the dry-process deslagging by adopting medium-high temperature gasification, achieves the purpose of improving carbon transformation rate and cooled coal gas efficiency by adopting two-stage type graded gasification, enhances the operation and running stability by combining a simplified deslagging device and an air distribution plate design, is suitable for the gasification transformation of various carbon-containing solid fuels and has large-scale popularization and application prospect.

The invention relates to a novel long-acting glucagons like peptide-1 (GLP-1) analog and a synthesis method thereof. The synthesis method comprises the following steps: modifying the 8th, 23rd or 37th site of the natural GLP-1 to obtain the GLP-1 analog having longer pharmacological action time; quickly synthesizing a peptide chain by adopting a microwave-promoted solid-phase synthesis method; reacting cysteine residues with a 4-hydroxyl coumarin analog to obtain a target polypeptide; purifying the crude product; and carrying out freeze-drying to obtain the GLP-1 analog.

A nontemplated method for producing Alpha-ferric oxide nanorings comprises the steps of collecting 9-50 mmol / L ferric trichloride aqueous solution, adding equivoluminal 3-10 mmol / L sodium dihydrogen phosphate aqueous solution, stirring, placing into a sealed reaction vessel, sealing, performing constant temperature treatment at 180-270 DEG C for 12-72 hours, taking out of the reaction vessel, air cooling, separating red precipitate in the vessel, water washing for 2-5 times, and oven-drying in the air at 60-80 DEG C to obtain Alpha-ferric oxide nanorings. The inventive method has the advantages of narrow size distribution of Alpha-ferric oxide nanoring particles, uniform adjustment of ring internal diameter, easily accessible raw materials, simple production process, good product reproducibility, no pollution, and applicability to large-scale production.

The invention relates to long-acting glucagon-like peptide 1 (GLP-1) analogues and a synthesis method thereof. GLP-1 analogues with longer pharmacological action time are obtained through adding a modified 37th amino acid to natural GLP-1, the synthesis of target polypeptides is quickly realized through a microwave-promoted solid-phase synthesis method, and crude products are purified and freeze-dried to obtain the GLP-1 analogues.

This invention discloses a cell cultivatioin device including: a cell cultivation tank with an inlet for seed cells, an inlet for nutrient fluid and a stromal cell adding port on one end, the other end is set with an outlet for cultivated cells, an outlet for metabolized waste solution and a discharge port for stromal cells, at least two supplying tubes for nutrient fluid, one metabolized waste solution reclaim tube and two cell cultivation tubes are set in the cell cultivation tank, other places of which are fully filled with stromal cells, a nutrient fluid circulation device connected with the inlet of the nutrient fluid and the wasted outlet of the cell cultivation tank, a cell providing device connected with the seed cell inlet of the tank and a cell collecting device connected with the outlet of the cultivated cells of the tank.

The invention discloses an in-situ nitrogen-doped carbon coated lithium titanate composite material. The in-situ nitrogen-doped carbon coated lithium titanate composite material is a composite material composed of a lithium titanate inner core and a nitrogen-doped carbon substance covering the surface of the lithium titanate inner core. The invention further discloses a method for preparing a lithium battery negative electrode material. The process disclosed by the invention is simple and easy to operate, and reaction conditions are moderate; a carbon coated layer of the prepared composite material is uniform, and the thickness is controllable; and the material has excellent circulating stability and rate performance when being used for the lithium ion battery negative electrode material.

The invention relates to an aqueous electrolyte for improving reversibility of a neutral zinc-manganese battery and a preparation method of the aqueous electrolyte, and the preparation method comprises the following steps: 1, preparing an inorganic zinc salt basic electrolyte: dissolving inorganic zinc salt in water, and stirring at room temperature to obtain the inorganic zinc salt basic electrolyte with a certain concentration; and 2, adding a certain amount of organic complexing agent according to the complexing molar ratio, and stirring at room temperature; according to the invention, thebeneficial effects are that the electrolyte wherein the positive electrode and the negative electrode are in direct contact is designed, the attenuation problem of the negative electrode and the positive electrode is solved, the stability of the current zinc-manganese battery based on the neutral aqueous electrolyte is improved, and the purpose of improving the reversibility of the neutral zinc battery is achieved. According to the electrolyte, the organic component is introduced, the electrolyte maintains the high safety characteristic of the original aqueous electrolyte, the introduced organic component is environmentally friendly and low in cost, and the electrolyte is suitable for any battery system based on a zinc metal or zinc alloy negative electrode and batched and large-scale battery preparation and production.

The invention provides a sludge drying and gasification coupled coal-fired power generation system. The sludge drying and gasification coupled coal-fired power generation system is characterized by comprising a sludge indirect drying unit, a sludge gasification and combustion unit and a gas incineration unit, wherein the sludge indirect drying unit is used for performing indirect drying and dewatering on sludge raw materials stored in a sludge storage warehouse by steam; waste gas produced by the sludge storage warehouse and exhaust gas produced by indirect drying and dewatering of the sludgeraw materials is exhaust gas; the sludge gasification and combustion unit is used for conveying and gasifying the sludge being subjected to indirect drying and dewatering to produce flammable gas; thegas incineration unit is used for conveying the flammable gas produced by the sludge gasification and combustion unit and the exhaust gas to a coal-fired boiler for combustion. Another technical scheme of the invention is to provide a sludge drying and gasification coupled coal-fired power generation method. By adopting the system and the method provided by the invention, sludge combustion and power generation are realized by feeding the combustible gas obtained by sludge drying and gasification together with raw coal into the coal-fired boiler for combustion and replacing part of coal-firedload without affecting a coal-fired boiler system. The system provided by the invention runs stably and reliably, is easy to be enlarged, and is environmentally friendly and energy-saving.

The invention relates to a method for preparing light olefins from alcohols. The method comprises a fluidized-bed reactor, a catalyst regeneration system, a stripper and a reaction product subsequent separation system, wherein the fluidized-bed reactor is divided into a first reaction area and a second reaction area; the method comprises the steps of: introducing a raw material, namely the alcohols into the first reaction area and performing dehydration reaction by contacting a catalyst; allowing a reacted gas stream and the catalyst to enter the second reaction area and continuously reacting by contacting another stream of catalyst which is regenerated by burning; performing cracking on a main product of dehydration of the alcohols to obtain the light olefins; separating the gas stream after the reaction and the to-be-regenerated catalyst; allowing the separated gas stream to enter the subsequent separation system; allowing the separated to-be-regenerated catalyst to enter the first reaction area after cooling the separated catalyst by exchanging heat; and recycling the other part of the catalyst after stream stripping and regeneration. The method provided by the invention has the advantages of improving the conversion rate of methanol, improving the selectivity of propylene in the reaction product, fulfilling the aim of increasing the propylene yield, and simultaneously contributing to realizing large-scale continuous production.

The invention relates to a method for batch preparation of a pure phase AlON transparent ceramic powder body, belonging to the technical field of preparation of the transparent ceramic powder body. The method comprises the steps as follows: taking nanometer Al2O3 and active carbon as raw materials; mixing the raw materials on a planetary ball mill at a low rotation speed; quickly drying slurry onan electric heating plate; loading powder by a region distribution and preset air hole technology; and preparing the pure phase AlON transparent ceramic powder body in combination with a low-temperature quick carbon removal process. Different region phases of the obtained AlON powder body are stable in composition and good in uniformity, so that the AlON powder body is suitable for batch production; and an AlON transparent ceramic with high transmittance rate can be obtained by taking the AlON powder body as a raw material and sintering the AlON powder body in a shorter time at a lower temperature, which shows that the AlON powder body prepared by the method is good in sintering activity and is suitable for preparing the AlON transparent ceramic.

The invention discloses an ultra-low-power organic resistance changing memory device and a manufacturing method of the ultra-low-power organic resistance changing memory device, belonging to the technical field of organic electronics and CMOS-mixed integrated circuit. The device is manufactured on a substrate, a device unit is an MIM capacity structure, a bottom layer of the MIM structure is an inert electrode such as metal or non-metal conductive thin-film, a top layer of the MIM structure is an active electrode such as metal Al, a middle function layer of the MIM sturcture is a poly-p-xylylene polymer film growing after multi-deposition. According to the invention, the device adopts the poly-p-xylylene polymer film growing after multi-deposition as the function layer, programming current of a memory is less than 0.5 muA, and erase current of the memory is reduced to about 10 nA or lower, therefore, the ultra-low-power operations of the organic resistance changing memory are implemented.

The invention discloses an anticancer nano medicament loading an arsenical and a preparation method thereof, and relates to a nano medicament. The anticancer nano medicament loading the arsenical comprises an arsenite complex and a carrier, wherein the arsenite complex is loaded on the carrier and formed by As ions and most transition metal ions; the most transition metal ions comprise one of Mn, Fe, Ni, Zn, Pt, Co, Pb and the like; and the carrier is a silicon dioxide nano material with a pore structure. Hollow silicon dioxide nano spheres are synthesized first, then mesoporous silicon dioxide nano spheres are synthesized, and finally, the anticancer nano medicament loading the arsenical is prepared. The process steps are simple, the operation is convenient, the yield is relatively high, and amplified preparation is facilitated; and the anticancer nano medicament loading the arsenical has a strong anticancer effect, and can effectively control the growth and migration of tumors on the premise that cancer cells are effectively killed so as to effectively treat the cancer.

The present invention relates to a powdery built biological carrier fluidized bed A / O sewage treatment process. It includes anoxybiotic bio-chemical reaction, aerobic bio-chemical reaction, coagulation reaction and precipitation, in which the anoxybiotic bio-chemical reaction, aerobic bio-chemical reaction, coagulation reaction and precipitation are respectively implemented in anoxybiotic tank, aerobic tank, coagulation tank and precipitation tank which are formed into an integrated reaction tank.

The invention discloses a circulating fluidized bed gasifying system and a gasifying method thereof. The circulating fluidized bed gasifying system comprises a fuel breaking and feeding system, a fluidized bed gasifying system, a residue discharging system, a synthetic gas waste heat recycling system, a flyash removal circulatory conveying and utilization system, a crude gas purifying and distributing system and the like. The whole waste heat recycling system and flyash reutilization system are used herein, gasifying sensible heat of synthetic gas is completely used to produce saturated steam and superheated steam, a circulating remelting gasifying scheme and a boiler combustion scheme may be used for flyash, energy utilization efficiency is maximized, water resource consumption is minimized, and the circulating fluidized bed gasifying system is applicable to fuel gas preparation systems for the industries such as ceramics, industrial kilns, glass kilns and steel making, and has a promising application prospect for use as coal-derived fuel gas station mainstream techniques.

The invention discloses a method for preparing a polyethylene-based wood-plastic composite material by using bagasse. The method comprises the steps: soaking the bagasse into a sodium hydroxide aqueous solution for alkalization treatment, then, washing with distilled water, then, drying, and carrying out mechanical crushing, so as to prepare bagasse powder with the particle diameter of 100-200 meshes; weighing raw materials, namely the bagasse powder, medium-density polyethylene, benzoyl peroxide, maleic anhydride, silicone oil, chlorinated paraffin and dibasic lead phthalate, according to the following mass ratio of (20-60): (10-50): (0.5-2): (1-4): (15-20): (1-7): (0.5-4.0), uniformly mixing the raw materials in a high-speed stirrer so as to prepare a mixed material, and then, reacting and extruding in a twin-screw extruder, thereby preparing an extruded-molded sheet material, namely the polyethylene-based wood-plastic composite material. According to the method disclosed by the invention, the operation is simple, the waste is utilized, and large-scale popularization and application are facilitated; the prepared polyethylene-based wood-plastic composite material is non-toxic and environment-friendly, is excellent in comprehensive performance and easy in processing and can replace the traditional timber, thereby having a broad application prospect.

The invention discloses a method for synthesizing methanol at the low temperatures, and relates to methanol synthesis. The method includes carrying out heating pretreatment on catalysts in reducing gas atmosphere; cooling the catalysts until the temperatures of the catalysts reach the room temperature, then switching the catalysts into carbon dioxide and hydrogen mixed atmosphere and carrying outreaction for preparing the methanol by means of carbon dioxide hydrogenation. The method has the advantages that the excellent catalytic performance for preparing the methanol by means of carbon dioxide hydrogenation is displayed, conditions are mild, and products are high in selectivity; the CO2 conversion rate can reach 15% under low-temperature reaction conditions, and the selectivity of the methanol can reach 90% at least under the low-temperature reaction conditions; the catalysts are sulfide or metal oxide or supported catalysts with the sulfide or the metal oxide, sintering phenomena can be prevented in reaction procedures, and the stability of the catalysts can be improved; the catalysts are pretreated in the reducing atmosphere, active sites of the catalysts can be positioned in unsaturated coordination environments to a certain extent, accordingly, the catalysts are high in carbon dioxide activation ability, and selective generation of the methanol can be promoted; proceduresfor preparing the catalysts are simple and controllable, and expanded preparation can be facilitated.

The invention discloses a method for treating acid waste water containing copper and iron. The method comprises the steps of: firstly, carrying out metathesis on copper in wastewater by using iron powder and filtering; secondly, activating and culturing strains preserved in a unit by using a solution obtained through the metathesis, and carrying out domestication; thirdly, oxidizing the solution obtained through the metathesis by using domesticated bacteria under the stirring or aerating condition; and fourthly, generating polyferric sulfate by using an oxidized Fe<3+> solution. The method has the advantages of short process flow, simple equipment structure, less investment, low cost, environment friendliness because of no generation of externally-emitted matters, and capability of recycling valued metals so that economic benefit is increased.