957results about How to "Guaranteed adsorption effect" patented technology

The invention provides a wall climbing robot which is better in absorbability and flexibility and can be moved onto different wall surfaces and adsorbed on a steel wall surface. The wall climbing robot comprises front and rear climbing vehicles with the same structure and is suitable for routing inspection of a large port crane; each of the climbing vehicles comprises a machine frame, a drive wheel, a driven wheel, a crawler belt, a walking motor and a plurality of electromagnets arranged on the crawler belt at intervals; two electric brushes positioned on the inner periphery of the crawler belt are fixed on each of the electromagnets, an electric brush sliding groove formed in the inner periphery of the crawler belt is fixed in the machine frame, and two power-on boards communicated with two poles of a power supply are arranged in the electric brush sliding groove; when each of the walking motors drives the corresponding drive wheel to rotate and drive the crawler belt to move, the two electric brushes on the corresponding electromagnet moved to be close to one side of the crawler belt are respectively in contact with the two power-on boards, so that the electromagnet is energized to be adsorbed on the steel wall surface; each of electromagnets moved to the other side of the crawler belt is de-energized; and the machine frames of the front climbing vehicle and the rear climbing vehicle are hinged to each other, and a shell of a wall surface replacing motor for driving the two machine frames to oppositely rotate and an output shaft are respectively fixed on the two machine frames.

The invention discloses a cadmium-arsenic absorbing material and a preparing method and application thereof. The cadmium-arsenic absorbing material includes the steps that biomass is smashed and heated to 500 DEG C quickly under the limited oxygen or oxygen-free condition, then thermal cracking is conducted till the biomass is totally carbonized, the biomass is cooled naturally to the room temperature, smashing is conducted, and an absorbing material precursor is obtained; the absorbing material precursor is mixed with a ferric salt solution, a mixture of the absorbing material precursor and the ferric salt solution is prepared, the mixture is placed at the temperature of 110 DEG C to 150 DEG C to conduct reaction for 12 hours and then is cooled to the room temperature, dissociative ferric salt remaining on the surface of the material is washed out, and the cadmium-arsenic absorbing material is obtained after being dried at 80 DEG C. The cadmium-arsenic absorbing material and the preparing method and application can be used for absorbing cadmium and / or arsenic and restoring soil or water polluted by heavy metal; secondary pollution is avoided; the soil physicochemical property is improved; meanwhile, biomass waste is converted into a soil restoration material, the cadmium-arsenic absorbing material is low in cost and wide in source, and the soil restoration cost is lowered.

The invention discloses a reclaimed water treatment system combining an upflow aerating biological filter with horizontal underflow artificial wetland. The system consists of the upflow aerating biological filter and the horizontal underflow artificial wetland; the upflow aerating biological filter comprises a water inlet guide tube positioned at the bottom of the filter; a filter plate, a supporting layer, an A section filler area, a B section filler area and a water outlet area are sequentially arranged above the water inlet guide pipe; a communicating water pipe is mounted on the water outlet area, and communicated with a regulating tank of the horizontal underflow artificial wetland; an aerator pipe is led out of the supporting layer; the regulating tank and a matrix area parallel to the regulating tank are arranged at the lower layer of the horizontal underflow artificial wetland; the matrix area sequentially comprises a macadam area, a steel slag area, a zeolite area and a water outlet gravel area from left to right; the water outlet gravel area is equipped with a water outlet pipe; and a soil covering layer and aquatic plants are arranged at the upper layer of the horizontal underflow artificial wetland. With the adoption of the system, on-site treatment and utilization of sewage are achieved; the sewage treatment process flow is simplified; and operation and management costs are lowered.

The invention discloses an endotoxin adsorbent used in hemoperfusion, and a preparation method thereof. The preparation method comprises the following steps: a porous carrier is prepared; the carrier is polystyrene divinylbenzene resin or polymethyl methacrylate resin, wherein the pore size of the resin is 5-50nm and the specific surface area of the resin is no less than 500m<2> / g; residual double bonds of the carrier resin are subjected to epoxidation modification; and ligands are immobilized. According to the scheme of the invention, a synthesis process route is changed, such that adsorbent harmful substance residue is avoided, and adsorbent adsorption capacity is improved. Specifically, residual double bonds of the adsorption resin are subjected to epoxidation modification, such that the epoxy group amount is increased; with the epoxy groups, hydrophobic tethers are added, such that ligand movement capacity is improved, and the adsorbent is provided with a good endotoxin adsorption effect; and resin pore size and specific surface area are controlled, such that the adsorption amount and removal rate of the adsorbent upon cytokines are ensured.

The invention discloses a preparation method of a modified polymer film material for effectively removing trace heavy metal ions in a water body, which comprises the following steps: 1) carrying out plasma treatment on a polymer film; 2) respectively preparing an initiator solution, a monomer solution, a buffer solution, an activating solution and a polyethylene polyamine water solution; 3) immerging the polymer film in the initiator solution, and carrying out surface activation by ultraviolet irradiation; 4) putting the polymer film into the monomer solution to carry out grafting reaction under ultraviolet irradiation; 5) activating the polymer film in the activating solution; and 6) putting the activated film into a polyethylene polyamine water solution to carry out coupling reaction, thereby preparing the modified film material capable of removing trace heavy metal ions in a water body. In the polymer film modifying process, carboxyl and amino groups are introduced to carry out hydrophilization and endow the modified film with complexing capacity, thereby removing the trace heavy metal ions. The invention has the advantages of simple technique, favorable treatment effect, wide application range, low cost, high unit mass adsorption capacity, time saving, high efficiency and energy saving.

The invention relates to a preparation for multiporous material, especially a process for preparing organic and inorganic hetero-material with multiporous structure and application thereof. The hetero-material is a transition metal phosphonate with different organic phosphonic acid groups combined on the surface and skeleton of mesoporous and macroporous structure, wherein, the weight percent of the organic phosphonic acid P is 1% to 17%, and the transition metals can be selected from Ti salt, Al salt, Zr salt, etc. The hetero-material is directly synthesized by hydrothermal synthesis and can be used for heavy metal ion absorption with good absorption effect, the invention is provided with simple equipments and moderate synthesis conditions, and the raw materials is available, accordingly, the multiporous material preparing process is suitable for large-scale production.

The invention belongs to the technical field of special robots and particularly relates to a differential motion driving magnetic adsorption type multifunctional wall climbing robot with small-folding-size mechanical arms, comprising a climbing mechanism and an operation mechanism, wherein the operation mechanism comprises multifunctional mechanical arms and tail end working modules; a base of each multifunctional mechanical arm is fixed on an adsorption type climbing mechanism; and each tail end working module is fixed at the tail end of each multifunctional mechanical arm. According to the invention, the small-folding-size mechanical arms are carried; with the adoption of a five-degree-of-freedom matching manner, the tail end of each arm can work in a working region at any position and any angle; and compared with the other mechanical arms with less degree-of-freedom, the movement of the multifunctional mechanical arms is more flexible. The small-folding-size mechanical arms refer to that the arm folding is more compact and the size of the folded arm is smaller according to explanation; and according to the shape represented on each arm, particularly a large arm adopts a curve design, so that other structures can be avoided when the arms are folded.

The invention provides a nanometer concentrated enzyme organic fertilizer and a preparation method thereof. The nanometer concentrated enzyme organic fertilizer, based on mass percent, comprises 5%-10% of nanometer concentrated enzyme and 90%-95% of organic fertilizer, wherein, the nanometer concentrated enzyme, based on mass percent, comprises the following components: 2%-4% of nano-carbon, 1%-3% of nano-silicon, 20%-40% of protease, 30%-40% of ligninase, 20%-40% of soil enzyme and 1%-3% of bacillus subtilis. The small-scale nanometer materials with high surface activity, namely, nano-carbon and nano-silicon are added, and thus absorption ability of the plants on the fertilizer is intensified; utilization rate of the fertilizer is increased, and loss of organic fertilizer is decreased; moreover, by means of combining biologic enzyme with the nanometer materials, not only absorption for enzyme molecules and nanometer materials is guaranteed, but effective time of biologic enzyme in soil is increased, and use efficiency of organic fertilizer is raised.

The invention discloses a vacuum-type wood processing and cutting device, which comprises a working table, a protective box, a protective cover, a sawdust collection box and a water tank. The upper surface of the working table is symmetrically fixed and welded. There are a number of rotating shafts on the inner wall of the plate, each rotating shaft is equipped with a conveying roller, and two fans are symmetrically arranged on the upper surface of both ends of the workbench, and the air inlet of each fan is connected. There is an air intake pipeline, the air intake end of the air intake pipeline is connected with the dust collection hood, the lower part of the inner cavity of the water tank is provided with an annular exhaust pipe, and the annular exhaust pipe is connected with the outlet end of the ventilation pipeline, and the inlet of the ventilation pipeline The gas end is connected with the gas outlet of the blower fan, and the upper part of the inner cavity of the water tank is connected with the lower inner cavity of the sawdust collection box through a connecting pipe. The invention has simple structure, high safety, is convenient for processing and cutting wood boards, can effectively absorb dust and collect sawdust, and is suitable for popularization and use.

The invention discloses an industrial mechanical arm. The industrial mechanical arm comprises a rack, an adjusting mechanism, a grabbing mechanism and a plurality of connecting pieces; the rack comprises a vertical column and a cross rod; the adjusting mechanism comprises a horizontally arranged base, a first rod body rotationally connected with the base, a first sleeve rotationally arranged outside the first rod body in a sleeving manner, two telescopic rods symmetrically fixed to the lower portion of the first sleeve, a first disk fixedly connected with the lower ends of the two telescopic rods and a second sleeve fixedly connected with the lower surface of the first disk; the grabbing mechanism comprises a barrel body arranged in the second sleeve in a sleeved manner, a compression spring, a second disk, two second rod bodies and a plurality of jaw bodies; and the jaw bodies are movably connected to the peripheral face of the barrel body through the connecting pieces. The industrial mechanical arm can rotate at a plurality of angles and automatically lock and keep the firm grabbing state of the jaw bodies, and is simple in structure, flexible to rotate and capable of completing the construction operation of a complicated environment.

The invention relates to a method for removing organic pollutants from water by drinking water enhanced treatment, which comprises the following steps: adding an oxidizing chemical medicament in water to be treated for reaction for 0.5 to 10 minutes and filtering the water by using a modified granular filter medium filter bed, wherein 0.2 to 5 milligrams of chemical medicine is added into each litter of water to be treated; and filtering a granular filter medium by using quartz sand, zeolite, cordierite, ceramic grains and other filter beds undergoing surface modification by oxides of metals such as iron, manganese and aluminum, wherein before filtration, the oxidizing mixed medicine at a certain concentration is added into water to be filtered, natural organic substances and micro organic pollutants in water can be removed effectively when the water staying in the filter bed for a certain period flows out of the filter bed, and at the same time, the added medicament does not penetrate a filtering layer. The method can remove natural organics in water, in particular persistent micro organic pollutants that generally cannot be removed quickly by the oxidation by potassium permanganate, ozone and hydrogen peroxide, at high speed with high removal rate and small residual amount, and thus is an economic and high-efficient organic pollutant removing method.

The invention discloses an amphoteric-cellulose-based composite material and application thereof. Quaternary ammonium-sulfonic acid cellulose serves as a carrier, grapheme oxide and chitosan are loaded in a blending manner, binding force among the three is utilized, and a quaternary ammonium-sulfonic acid cellulose / grapheme oxide / chitosan composite porous material is obtained through freeze drying. The quaternary ammonium-sulfonic acid cellulose / grapheme oxide / chitosan composite porous material comprises, by weight, 5-8 parts of quaternary ammonium-sulfonic acid cellulose, 0.5-3 parts of grapheme oxide and 0.5-3 parts of chitosan, is safe, non-poisonous and good in biocompatibility and degradability, has an orderly three-dimensional porous structure, good mechanical strength and efficient adsorption capability, can be used for water absorption and oil removal and processing of heavy metal ion waste water and organic waste water, and hopefully serves as a filtering material such as an air purification material and a medical adsorption material for use.

The invention discloses an object absorbing device. The object absorbing device comprises a shell with the cross section being circular, a cavity with the cross section being circular is formed in the shell, and the cavity is provided with a closed end face and an opened end face. The opened end face forms an end face for absorbing an object, the closed end face is provided with a motor, and fan blades arranged inside the cavity are connected with an output shaft of the motor. The object absorbing device is characterized in that the closed end face is in an airtight state, and the fan blades are in linear distribution along the axis of the cavity. In the working process, the shell on the circumference of the opened end face can apply absorption force on the object under the condition that the shell makes contact with or does not make contact with the object. The object absorbing device can be widely applied to absorbing and grasping objects, is suitable for the objects with large surface roughness and can also be adaptive to the object tilting condition, and the advantage of being small in energy consumption is achieved as well.

The invention discloses a silica gel absorption column extraction kit and method for free DNA (Deoxyribonucleic Acid) and RNA (Ribonucleic Acid) of blood plasma or blood serum and relates to the fieldof molecular biology. The kit comprises proteinase K, isopropyl alcohol, absolute ethyl alcohol and threefold-distilled water, and further comprises a lysis solution containing a nucleic acid separation accelerant, an adsorption solution containing a nucleic acid adsorption accelerant and a washing solution; the method is mainly carried out by utilizing the kit. By adopting the kit provided by the invention, the free DNA and RNA in the blood plasma or the blood serum can be rapidly and completely released, and denatured protein keeps a dissolved state; under the action of the adsorption solution, the free DNA and RNA are efficiently adsorbed on a silica gel absorption column; after the silica gel absorption column is washed by the washing solution, the free DNA and RNA with relatively high purity and concentration are obtained.

The invention provides a preparation method of a sulfur / porous carbon composite cathode material, comprising the steps of (1) hydrothermally pre-carbonizing: mixing an organic nitrogen source and an organic carbon source, and preparing a nitrogen-doped precursor via hydrothermal reaction; (2) activating: mixing the nitrogen-doped precursor with a pore-expanding agent, and calcining at high temperature to obtain nitrogen-doped porous carbon material; (3) preparing the sulfur / porous carbon composite cathode material: mixing sulfur and porous carbon, reacting for a period of time, and grinding to obtain the sulfur / porous carbon composite cathode material. By using glucose as a carbon source and acetamide as an organic nitrogen source, and controlling morphology of the carbon material through a series of methods such a hydrothermal pre-carbonization, pore expanding with the pore-expanding agent, and low temperature melting, it is ensured that sulfur particles are adsorbed to ducts of the carbon material and electrochemical properties of an electrode are improved; the sulfur / porous carbon composite cathode material having good reversibility and cycle stability is thereby worthier of popularization.

The invention provides a zirconium dioxide-coated manganese lithium ion sieve which has a core-shell structure, wherein a core is made of H1.6Mn1.6O4, and a shell layer is made of ZrO2. In addition, the invention further discloses a preparation method which comprises the following steps: dispersing Li1.6Mn1.6O4 into solution containing a Zr source, removing a solvent and roasting, so as to obtain a ZrO2 lithium ion sieve precursor; removing Li from the ZrO2 lithium ion sieve precursor, then performing solid-liquid separation, washing and drying, so as to obtain the zirconium dioxide-coated manganese lithium ion sieve. According to the zirconium dioxide-coated manganese lithium ion sieve, the problems that a manganese lithium ion sieve is poor in acid corrosion resistance, large in manganese solution loss, unstable in structure and poor in cycling performance are solved. The obtained lithium ion sieve product is high in adsorption capacity of lithium ions, stable in structure and long in service life, so that the lithium ion sieve provided by the invention is an efficient lithium extraction adsorbent of salt lake brine or sea water. The zirconium dioxide-coated manganese lithium ion sieve is simple and clean in preparation processes, free of side reaction in a preparation process and good in product performance, thereby being suitable for industrial production.

The invention relates to a preparation method of activated carbon / zeolite complex materials, belonging to the field of preparing inorganic materials and absorbents. The invention is characterized in that the method takes coal gangue and asphalt powders as raw materials to prepare the zeolite / activated carbon complex materials. The method comprises the followings steps: fully mixing the ground coal gangue and asphalt powders, molding by adding water and activating the carbon in the carbon dioxide atmosphere after drying and carbonizing; dynamic crystallizing the activated coal gangue in NaOH water solution and activating after washing and drying, thus obtaining the zeolite / activated carbon complex materials. The activated carbon / zeolite complex materials prepared by the method have double surface properties and porous structures of both zeolite and activated carbon with adjustable proportion; the complex materials are high in mechanical intensity, easy in preparation method, low in cost, thus having important values in comprehensive utilization of coal gangues and development of novel absorption materials.

The invention relates to a bentonite-loaded sulfurized nanoscale zero-valent iron composite material and a preparation method and application thereof. According to the composite material, sulfurized modified nanoscale zero-valent iron is loaded on bentonite; the mass ratio of bentonite to total iron is (0.85-1.2):1, and the molar ratio of a sulfur element to total iron is (0.05-0.065):1. The bentonite-loaded sulfurized nanoscale zero-valent iron composite material is more stable and efficient, and is suitable for treatment of multiple pollutants; electron transfer on the surface of the nanoscale zero-valent iron can be accelerated through sulfurized modification and corrosion is promoted, thereby greatly improving the reaction activity of the material; furthermore, the sulfuration process is simple and is free of pollution; and the material is not easy to reunite when loaded on bentonite and the activity can be kept for a long period of time. The removal rate of the material on 4-nitrophenol within 2min reaches over 97.5%, and the removal rate on orange I is close to 100%.

The invention discloses an automatic locking mechanical arm. The automatic locking mechanical arm comprises a rack, a rotating mechanism and a locking mechanism, wherein the rotating mechanism comprises a base which is in sliding connection with the rack, an annular rotating base which is in bearing connection with the base, three telescopic rods which are in fixed connection with the annular rotating base, a first disk which is hinged to the lower ends of the three telescopic rods, a second disk and stand columns; and the locking mechanism comprises a sleeve which is fixedly arranged on the lower surface of the first disk, a cylinder which is sleeved by the sleeve in a sliding manner and connection pieces. According to the automatic locking mechanical arm, due to the fact that compressionsprings are designed between the first disk and the cylinder, the cylinder automatically locks grasping of claws under the elastic force action of the compression springs, and safety and reliabilityof the automatic locking mechanical arm are improved; and by adjusting the different lengths of the three telescopic rods, the first disk is driven to incline at all angles and in all directions, andtherefore the claws are driven to rotate at multiple angles, and completion of grasping operation of objects to be grasped on multiple planes and in all directions is achieved.

The invention discloses a magnetic kieselgur based absorbent, and a preparation method and an application thereof. 1 to 10 percent of hydrochloric acid solution is adopted for performing pretreatment on kieselgur firstly, suction filtration and drying is performed on the kieselgur, then physical pre-modification of the kieselgur is performed through a plasma, then a ferrous ion solution is adopted to soak the kieselgur for realizing modification, alkali is added for adjusting the pH value to generate a magnetic precursor, and then the magnetic kieselgur based absorbent is prepared through suction filtration, stoving, roasting and grinding. The modified kieselgur provided by the invention has remarkably improved adsorbability, has a favorable adsorbability to substances difficult to degrade, meanwhile has a greater magnetic property, can realize solid-liquid separation of treated wastewater conveniently, and enables the reutilization of the kieselgur to be more convenient.

The invention provides a dialysate adsorbing filler. The adsorbing filler is a composite formed by gluing macromolecule materials outside solid materials, wherein the solid materials are particles being 0.1micrometer to 1mm and are selected from one or a combination of silicon-based adsorbing materials, zirconium-based adsorbing materials, magnesium-based inorganic adsorbing materials, aluminum oxide, titanium oxide, other metal or composite metal oxides, montmorillonite, activated carbon and other adsorbing materials; the macromolecule materials are one of polysaccharide macromolecules, protein macromolecules, polyvinyl alcohol, polyacrylic acid and derivatives, or multiple mixed macromolecules and cross-linked polymers. According to the dialysate adsorbing filler provided by the invention, hydrogel or viscoloid is formed by utilizing macromolecules in the materials, and is used for packaging or gluing solid adsorbing materials, the adsorbing capability of the materials is kept, meanwhile, the seepage of fine particles of the adsorbing materials can be effectively controlled, and the risk of dialysis treatment can be lowered.

The invention relates to the technical field of the analysis testing method, in particular to a testing method for a plant source volatile organic matter; a sampling tube uses Tenax-TA, Carboxed 1000 and Carbosieve SIII as filling materials for filling; the volatile organic matter is absorbed in the sampling tube and carries out thermal desorption by two times through a secondary thermal desorption instrument; the desorption gas enters a gas chromatograph for separation and measurement with the carrier gas by being coupled on-line from the thermal desorption instrument; the invention adopts three different filling materials, expands the absorbing range of the sample, guarantees the complete collection of the sample, holds high separation capacity for chromatographic peak by adopting a capillary chromatographic column and can not cause the widening of the chromatographic peak; in the process of collecting and analyzing samples, the water disturbance is eliminated and the analysis capacity to the compound is strengthened; low temperature or cooling equipment is not needed, the analysis cost is reduced, the sensitivity of the sample analysis is improved, and the analysis requirement of the plant source volatile organic matter is met, thus reaching the T0-17 standard of an EPA method.

The invention discloses high-performance mesoporous active carbon suitable for biological enhancement and a preparation method thereof, relates to a preparation method of active carbon, and in particular to a preparation method of high-performance mesoporous active carbon which is suitable for biological enhancement and is applied to water treatment ozone-biological active carbon and ozone-biological enhanced active carbon processes. The invention aims to solve the problems that the existing active carbon has low mesopore rate and low biological loading amount on the surface and in pore passages of the active carbon. The preparation method comprises the following steps of: firstly respectively crushing and screening blind coals, candle coals and coconut shells which are used as precursors, and then matching in proportion; then, performing briquetting, carbonization, oxidization before activation, activation and modification after activation on the matched raw material; and finally, screening to obtain the mesoporous active carbon. The mesopore rate of the obtained mesoporous active carbon reaches 40-70%, and the biological loading amount can be improved to 106-107CFU / g, so that the high-performance mesoporous active carbon can be applied to the field of water treatment.

The invention discloses a preparation method of a composite adsorbing material of industrial wastewater heavy metal ions. The composite adsorbing material comprises a carrier, functional components and catalytic components. The preparation method comprises the steps of mixing and ball-milling all components of the carrier into a corresponding grain size and mixing, mixing and preparing all components of the functional components into a solution, preparing all components in the catalytic components into suspension liquid, selecting all components in parts by weight, mixing, diluting and stirring to obtain slurry, drying and then crashing. The composite adsorbing material provided by the invention has the advantages that the adsorbing effect is good, the cost is low and the preparation is simple.

The invention relates to the field of semiconductor photoelectrons, in particular to an infrared focal plane array detector which comprises an encapsulation casing, an infrared optical window and a buffering ring. The encapsulation casing, the infrared optical window and the buffering ring form a closed vacuum cavity. The buffering ring is positioned between the encapsulation casing and the infrared optical window. An electrical activation getter and an infrared focal plane detector chip are arranged in the vacuum cavity. The encapsulation casing comprises a bottom surface, wherein the infrared focal plane detector chip is arranged on the bottom surface. A welding plate is arranged on the side of the bottom surface, a metal pin is arranged outside the bottom surface, the welding plate is electrically communicated with the metal pin, and the electrical activation getter is electrically communicated with the metal pin. A metal welding plate is arranged on the infrared focal plane detector chip and connected with the welding plate through a metal wire. The encapsulation structure of the infrared focal plane array detector is simplified, the size of the infrared focal plane array detector is reduced, and the encapsulation cost of the infrared focal plane array detector is reduced.

The invention relates to a thiol and disulfide removal agent which is an X molecular sieve exchanged from positive ions Cs<+>, Mg<2+>, La<3+>, Ce<3+>, Cu<2+>, Zn<2+>, Mn<2+> or a Y molecular sieve exchanged from positive ions Cs<+>, Mg<2+>, La<3+>, Ce<3+>, Zn<2+>, Mn<2+>.The invention further discloses a C4 hydrocarbon deep desulfurization method which adopts the thiol and disulfide removal agent, in the invention, removal is carried out continuously and systematically on H2S, COS, thiol and disulfide in the C4 hydrocarbon; the method is easy to operate; C4 hydrocarbon can be refined to ensure that total sulfer therein is less than 0.5ppm and the carbonyl sulfide is less than 0.05ppm.

The invention discloses a nano-carbon organic compound fertilizer, which consists of proper parts by weight of urea, potassium sulfate, hairs, palygorskite, dimethyl sulfoxide, a mixture consisting of a boron fertilizer and a zinc fertilizer in the weight ratio of 1:0.5, ferrous sulfate, nodule bacteria, azotobacter chroococcum, nano-carbon, curculigo orchioides, golden larch bark, light yellow sophora root, ligninase, plant ash, humic acid, sodium dodecyl benzene sulfonate, animal dung and powdery EDTA (Ethylene Diamine Tetraacetic Acid) manganese chelate. The nano-carbon organic compound fertilizer contributes to effective utilization of secondary and trace elements; the nano-carbon organic compound fertilizer is suitable for crops such as wheat, paddy rice, corn, soybean and oilseed rape, and the cold resistance, drought resistance and disease and insect resistance can be enhanced; when the nano-carbon organic compound fertilizer is applied to cotton and hemp crops, the tension and strength of fibers can be enhanced, the yield is increased remarkably, and the quality is improved remarkably.

The invention relates to a hierarchical-hole HZSM-5 catalyst suitable for a reaction for preparation of ethylene through dehydration of low-concentration ethanol, and is used for mainly solving the problems of low catalyst activity, poor catalyst stability, easy loss of active metals and the like existing in the prior art. The invention also relates to preparation of the modified catalyst and an application of the modified catalyst in the reaction for preparation of ethylene through dehydration of low-concentration ethanol. The molecular sieve catalyst can convert ethanol into ethylene with high conversion rate and high selectivity, and has the advantages of high activity at low temperature, good stability, high selectivity of ethylene, long catalytic life and the like.