396results about How to "Applicable treatment" patented technology

The invention discloses a microbiogenic cement and concrete and a production method thereof, which mainly mixes the Bacillus pasteurii solution for producing urease and an admixture of containing urea and mineral calcium salt and obtains the microbiogenic cement after reacting in a certain condition; adds admixture such as sand etc. into the mixture of mixing the bacterial solution and the mixture and reacts to generate the microbiogenic concrete. The microbiogenic cement or concrete of the invention can be used on protection and restoration of masonry ancient architectures and repair of cracks on concrete building or treatment of liquescent sandy soil. The invention provides a permanent method of safety, effectiveness and without environmental hazard for repair and strengthening technology of large quantity of civil architecture and structure; the invention has the advantages of the good effects, the good weatherability, the good permeability of gas and the good permeability of water and being especially suitable for treatment of the sandy soil; the invention is safe and environmental-friendly, and belongs to the environmental-friendly restoring material.

The invention relates to a composite corrosion and scale inhibitor and application thereof. The composite corrosion and scale inhibitor comprises a) two different salts selected from the group consisting of water-soluble borate, water-soluble gluconate and water-soluble silicate, b) at least one organic phosphonic acid and c) at least one scale inhibition and dispersion agent, wherein the scale inhibition and dispersion agent is a polymer containing carboxylic groups. The composite corrosion and scale inhibitor provided in the invention has good comprehensive performance, an excellent effect on inhibiting CaCO3 scale, strong capability in stabilizing Zn<2> in water and good corrosion inhibition, is applicable to treatment of circulating cooling water and uses a small amount of organic phosphonic acid, thereby reducing harm to environment caused by discharge of phosphorus.

The invention discloses pyridylpyrimidyl amine compounds or pyridylpyridyl amine compounds disclosed as Formula I and application thereof in preparing antineoplastic drugs, belonging to the technical field of drugs. The compounds can selectively inhibit CDK4 and CDK6, enable G1-period tumor cells to stop growth and G1-period tumor cells to reduce, can effectively lower the phosphorylation of the tumor inhibiting protein Rb in the Ser780 site, and thus, can be used for various diseases caused by cell cycle control maladjustment participated by CDK4 and CDK6. The compounds are especially suitable for treating malignant tumors, and have the characteristics of high selectivity, high activity and high tumor cell proliferation resistance.

A biologic dripping filter pool is composed of water inlet pipeline, water distributor, layered frame structure, guide tracks, drawer-type filler baskets, filtering material layer, and water corrector. Said layered frame structure has at least 4 guide track layers and relative drawer-type filler baskets.

The present invention relates to an infatmul containing docetaxel and its preparation method. Said preparation can be directly used for intravenous injection. At the same time of that it is used as medicine for curing tumor disease said preparation also can provide nutrients for patient. The weight volume concentration range of docetaxel contained by said preparation is 0.1-1.0 mg / ml, and its specification is that 1-500 mg of active component docetaxel is contained. Said infatmul composition includes docetaxel, vegetable oil, phospholipids and injection water, at the same time the components of glycerin and group emulsion, etc. can be added, in which the optimum group emulsion is poloxamer 188. Besides, said invention also provides the concrete steps of its preparation method and its application in preparation of medicine for resisting tumor.

The invention relates to a multi-modal remote sensing image high-rise feature fusion classification method based on deep learning. The method includes the steps of preprocessing a multi-mode remote sensing data set, manufacturing a training set, a verification set and a test set of a high-rise feature extractor to construct the model parameters of the high-rise feature extractor; constructing a model of the multi-mode high-rise feature extractor to extract high-rise features of a plurality of modal remote sensing images, extracting and storing the high-rise features of the multi-mode remote sensing images to train, verify and test a multi-classifier, a high-rise feature fusion algorithm being used for making a training set, a verification set and a test set of the classifier, constructingthe classifier model parameters for classifying newly generated data sets. Remarkable effect can be achieved in the remote sensing image ground feature classification through deep learning. The methodis suitable for classification of complex and marine remote sensing images and has the characteristics of being precise, rapid, efficient and safe, so that the utilization rate and the utilization value of the remote sensing images are improved.

The invention discloses a bacteriostatic hydrocolloid dressing and a preparation method thereof. The dressing comprises a polyurethane film, a hydrophilic colloid layer and a peeling layer which are adhered in turn. The preparation method comprises the following steps of: mixing a medical grade rubber substrate, gelatin, mineral oil, an antioxidant, sodium carboxymethyl cellulose, calcium alginate, a tackifier, O-carboxymethyl chitosan and dried nano-silver powder uniformly to obtain a blend; uniformly coating the obtained blend on the polyurethane film to form the hydrophilic colloid layer; covering the peeling layer on the hydrophilic colloid layer; and stamping to obtain the bacteriostatic hydrocolloid dressing. The bacteriostatic hydrocolloid dressing of the invention has high bacteriostasis, and simultaneously has the characteristics of high capacity of absorbing transudate, waterproofness, air permeability, firm adhesion, high compliance, capability of meeting diversified requirements on complicated wound, and simple and easily-implemented preparation method.

The invention provides a method for restoring uranium milltailings by utilizing plants, which is a technique for restoring the uranium milltailings by utilizing uranium-enriched plants (macleaya cordata) as the material. The method directly plants macleaya cordata into the uranium milltailings without other supplementary means and comprises the following steps: (1) sterilizing seeds; (2) plantingseedlings in pots; (3) transplanting the plants into the uranium milltailings; (4) and carrying out the centralized processing on the reaped overground part. The method solves the problem that the prior uranium milltailings release uranium and heavy metals under natural conditions to damage the environment. The method has the advantages of simple operation and management, high restoration rate aswell as low cost and environmental risk and beautifies the environment. The method is suitable for treating solid uranium waste storage yards in uranium mines, hydrometallurgy plants, various ettle and milltailing warehouses, and the like.

A phytoremediation method based on soil contaminated by uranium tailings comprises the steps for culturing pokeberry seedlings on a substrate containing uranium tailings, surviving, growing, harvesting and centrally processing. The method comprises the following steps of: (1) mixing soil contaminated by uranium tailings, surface oil of forest and pig manure according to a ratio to obtain a culture substrate; (2) adding sodium silicate in the culture substrate; (3) sterilizing seeds; and (4) potting. By adopting the comprehensive processing scheme combined with the pokeberry, the uranium tailings, the surface oil of forest, the pig manure and the sodium silicate, the method can solve the difficult problem that the environment can be endangered by heavy metal, uranium, which is released by uranium tailings under natural condition. The method has the advantages of convenient operation and management, high remedying efficiency, low cost, low environment risk, environment beautification, etc., and is suitable for processing solid-state uranium waste storage fields such as uranium mines, hydrometallurgy plants and waste ore and tailings reservoirs.

The purpose of the invention is to provide a method, a device and equipment for confirming a webpage evaluating model based on a transfer learning method. The method comprises the steps as follows: obtaining a set of target sample sets and at least one set of reference sample sets corresponding to the target sample sets in a webpage evaluating model to be established; obtaining weight adjustment information of part or all of the reference sample sets relative to the target sample sets in the at least one set of reference sample sets according to the target sample sets and the at least one set of reference sample sets; and performing a transfer operation according to the predetermined training mode and the weight adjustment information corresponding to the target sample sets and the reference sample sets to obtain the webpage evaluating model of the target sample sets. The method has the advantages as follows: the convergence operation can be quickly performed to establish the stable evaluation model, so that the method can be satisfactorily suitable for processing mass data and can obtain a better effect for evaluating current mass web pages.

The invention discloses a pyrimido or pyridopyridone compound shown in the formula I and its preparation method and use and belongs to the technical field of drug preparation. The pyrimido or pyridopyridone compound can efficiently and selectively inhibit cyclin-depedent kinase (Cdks) CDK4 and CDK6 activity and prevent tumor cell division through inhibiting CDK4 / CDK6. The pyrimido or pyridopyridone compound can be used for treating various diseases caused through imbalance of cell cycle control based on CDK4 and CDK6 and is especially suitable for cancer treatment.

The invention relates to a heterotrophic nitrifying and aerobic denitrifying bacterium for efficient denitrification, and the culture and application of the heterotrophic nitrifying and aerobic denitrifying bacterium. The bacterium belongs to an acinetobacter species (Acinetobacter), with the name of Acinetobacter sp.Y1, the preservation registration number of CGMCC NO.6563, the preservation institution of China Microorganism Culture Preservation Management Council General Microbiological Center and the preservation time of September 14th, 2012. The bacterium is separated from activated sludge of coking wastewater, can not only quickly remove ammonia nitrogen, but also grow under the condition that nitrite and nitrate are taken as sole nitrogen sources, and effectively removes nitrite nitrogen and nitrate nitrogen, and can be applied to nitrogen-containing wastewater treatment.

The invention relates to the treatment of industrial wastewater and domestic sewage containing nitrogen, in particular a membrane bioreactor (MBR) which can realize the function of synchronous nitrogen removal of nitrification and denitrification. The reactor comprises a reactor cylinder, a membrane component, spherical elastic filler, dissolved oxygen (DO) electrode, a pH electrode, a thermometer and other on-line monitoring and controlling components. A water production end on an internal membrane component of the MBR is connected with a water production pressure gauge and a vacuum pump. Except the membrane component, the inside of the MBR is also evenly provided with the spherical elastic filler which forms an integer by connecting in series from top to bottom and is fixed on the top and bottom of the reactor. The bottom of the MBR has a micropore aerator connected with an air pump for the aeration utilization of the MBR. The membrane bioreactor introduces the porous spherical elastic filler into the MBR and regulates the micro-environment inside the MBR, so as to realize the function of synchronous nitrogen removal of nitrification and denitrification. The membrane bioreactor has small land occupancy and simple operation, saves energy consumption, can remove a plurality of pollutants of organic matters, ammonia nitrogen, etc., and is applicable to the treatment of industrial organic wastewater, domestic sewage, etc.

The invention belongs to the technical field of treatment of waste water, and particularly relates to a method for reduction of sulfate into sulfide and treatment of metal waste water by sulfate reducing bacteria growing up with electric current. The sulfate reducing bacteria provided by the invention is a mixing bacteria group, which comprises Desulfobulbus propinonicus, geobacter sulfurreducens. Under the condition of lacking organic carbon resource, an electrode is used as the only electronic donator for growing, sulfate is reduced into sulfide via bioelectrical chemistry, and the sulfide is applied to the treatment of metal waste water. According to the method provided by the invention, the defect that organic carbon resource is needed to be used as the electronic donator is overcome,the operation is simple, the secondary pollution is zero, the cost is low, and is particularly suitable for the treatment on organic carbon metal waste water of mine waste water, metal smelting wastewater, electric plating waste water and the like.

The invention discloses a recycling process of sodium tetrachloroaluminate in phosphinothricin production. The process comprises the following steps that 1, mismatching and precipitation are carried out; 2, solids are filtered; 3, cooling precipitation is carried out; 4, reutilization is carried out; 5, cyclic utilization is carried out; 6, aluminum polychlorid is prepared. Sodium tetrachloroaluminate solid waste is changed into treasure, alchlor obtained after mismatching is recycled, the problem of treatment of sodium tetrachloroaluminate solid waste is solved, pollution to environment is reduced, no three waste is discharged, the atom economy of a reaction is improved, and large-scale production of phosphinothricin is facilitated. A mismatching agent and a poor solvent adopted in the process are low in price and easy to obtain, the whole process is easy and convenient to operate, and especially suitable for industrial production. Further prepared polymerization alchlor can be adopted as a water purifying agent, and is wide in application range and especially suitable for sewage treatment of chemical plants.

The invention provides an integrated device for heavy metal contaminated soil remediation and leacheate recycling. The integrated device comprises a leaching tower, a sedimentation basin, a water suction pump, an electrochemical reactor, a circulating pump and a liquid reservoir, all of which are orderly connected into a loop through communicated pipes; the device is capable of effectively removing heavy metals in soil; the leacheate can be recycled after electrochemical treatment; the device is high in remediation efficiency, low in running cost, simple in structure, high in applicability, free of noise and small in floor area. The invention also discloses a corresponding method which comprises the steps of soil leaching, sedimentation and electrochemical treatment, all of which circularly circulate; the method is capable of effectively removing heavy metals in soil and few in leaching times; the leacheate is high in circulating leaching efficiency after electrochemical treatment; secondary pollution is avoided, and aftertreatment of the leacheate is avoided, so that the treatment cost is reduced; the method is simple and the process of the method is easy to control. The integrated device and the method are applicable to remediation of heavy metal contaminated soil and leacheate recycling.

The invention discloses a method for recycling of soybean whey wastewater by a membrane separation technology. The method includes: sterilization pretreatment; flocculation and centrifugal separation for impurity removal; whey protein recovery by ultrafiltration membrane continuous separation; whey protein powder recovery; oligosaccharide syrup recovery by nanofiltration membrane continuous concentration; oligosaccharide recovery; and dialysis water recovery by reverse osmosis membrane continuous concentration. The method provided in the invention can avoid whey wastewater rancidity and ultrafiltration membrane pollution and plugging, and improves the product quality. Employment of the continuous separation concentration mode reduces stay of intercepted objects or protein, impurity concentrated liquors in a membrane assembly to the utmost, and back-and-forth circulation between a membrane liquid inlet tank and a membrane system no longer exists. Meanwhile, the membrane surface flow speed is controlled, so that the problems of membrane pollution and low separation efficiency are solved. An osmosis filtration membrane washing process is adopted, and water is added automatically for filter wash, so that the membrane pollution and plugging problems are solved, and the product quality is improved. The selection of high temperature resistant hydrophilic membrane materials guarantee a high water flux and help to reduce membrane pollution.

The Chinese medicine composition for treating viral hepatitis B is prepared with astragalus root, Dangshen, fried white atractylodes rhizome, angelica, white peony root and other 12 kinds of Chinese medicinal materials in certain proportion, and through decoction. It has high viral hepatitis B curing rate and no toxic side effect, and can produces fluent liver Qi and flexible Qi and blood.

The invention discloses an ammonia oxidizing bacteria and the application thereof. The ammonia oxidizing bacteria is named as (Nitrosomonas eutropha) CM-NRO14 and is preserved in the China Center for Type Culture Collection (CCTCC for short) of Wuhan University in Wuhan, China on Nov. 12, 2012, the preservation number is CCTCC No: M 2012456. The invention also provides the application of the Nitrosomonas eutropha CCTCC M 2012456 to saprobic ammonia removal, and further provides the application of the Nitrosomonas eutropha CCTCC M 2012456 to water eutrophication treatment. The ammonia oxidizing bacteria has high ammoxidation rate and ammonia removal efficiency and is suitable for high-ammonia nitrogen waste water treatment.

The invention discloses a treatment method of oil-based drilling cuttings and oily sludge. The treatment method comprises the following steps: 1) conveying the oil-based drilling cuttings and the oily sludge into a centrifugal oil-removing system to remove oil, and feeding the drilling cuttings and the oily sludge treated by the centrifugal oil-removing system into a high-temperature pyrolysis furnace through a feeding system to recycle 80 percent or more of oil-based sludge; 2) pyrolyzing and vaporizing the treated oily drilling cuttings in the high-temperature pyrolysis furnace, supplying high-temperature hot air generated by a biomass burner into the high-temperature pyrolysis furnace to generate heat, discharging drilling cuttings treated with the high-temperature pyrolysis furnace through a discharging system, and introducing waste gas into a de-dusting system and an oil recycling system for further treatment; 3) introducing the waste gas treated with the de-dusting system and the oil recycling system into a deodorizing system for final de-dusting and deodorizing treatment. The treatment method has a wide application range, and can be popularized to treatment of various oily sludge and oil-based drilling cuttings.

The invention discloses a traditional Chinese medicine for preventing and treating Alzheimer disease and a preparation method thereof. The traditional Chinese medicine is prepared from the following raw materials in parts by weight: 12-16 parts of prepared fleece flower root, 8-12 parts of ginseng, 9-13 parts of rhizoma acori graminei, 5-9 parts of coptis and 6-10 parts of chuanxiong rhizome. The traditional Chinese medicine can be prepared into granules, capsules, soft capsules, dissolved medicines, dripping pills and soft extracts, has the advantages of simple manufacturing process and low cost, is completely prepared from natural plants, does not contain hormones, has no addition of pigments and other chemical synthetics, and does not have toxic side effects on human bodies after being continuously used. The traditional Chinese medicine contains various effective components such as flavones, saponins, phenolic acids, alkaloids, polysaccharides and the like capable of being easily absorbed by human bodies, can be effectively used for nourishing the kidney and invigorating the brain, replenishing qi and dissolving turbidity and promoting blood circulation and eliminating toxicity, and is suitable for treating deficiency of the kidney, mild cognitive impairment caused by obstruction of the orifices by blood stasis, Alzheimer disease and the like.

The invention discloses a fraud gang identification and risk propagation prediction method based on a complex network, comprising the following steps: obtaining individual attributes; determining unique encoding of attribute values of the subject attribute and the non-subject attribute; data filtering; establish the data structure of storage and calculation; establishing a connected graph, abstracting the subject attribute value and the non-subject attribute value as nodes, abstracting the belonging relationship between the subject attribute value and the non-subject attribute value as edges connecting the nodes, and composing a connected graph; obtaining a model graph according to the connected graph; calculating model parameters according to the data structure; according to the model parameters, fraud gang identification and fraud risk propagation prediction are carried out. The invention calculates model parameters according to the knowledge of graph theory, and hierarchically classifies the model diagram according to known fraud users, thereby achieving the prediction purpose of accurately identifying fraud groups and fraud risk propagation.

The invention relates to an organic modified granular bentonite / attapulgite absorbent and a preparation method thereof. The preparation method adopts the technical scheme that bentonite powder and attapulgite powder are taken as main raw materials and mixed at the mass ratio of 1:(0.1-0.5); the mixture of the bentonite powder and the attapulgite powder is uniformly mixed with water at the mass ratio of 1:(1.2-2),dried for 16-32h at 90-110 DEG C, crushed into granular bentonite / attapulgite with the grain size of 0.2-2 mm and then calcined for 2-2.5 h at 550-850 DEG C; finally, the calcined granular bentonite / attapulgite is modified with a surface active agent, which is 50-400 percent CEC (Cation Exchange Capacity) of the calcined granular bentonite / attapulgite, under a stirring condition to obtain the organic modified granular bentonite / attapulgite absorbent. The preparation method is simple in process and causes no secondary pollution; the prepared organic modified granular bentonite / attapulgite absorbent has the characteristics of large grain size, excellent adsorption property and high strength and is applicable to treatment of wastewater containing chlorophenol.

The invention discloses an airlift intermittent internal recycling, de-nitration and dephosphorization sewage treatment technology and a device thereof; the sewage treatment technology comprises the steps: a biochemical tank is divided into an aeration area and a non-aeration area by a deflector; an aeration system is arranged at the bottom of the aeration area and internally provided with stuffing materials and membrane modules; the non-aeration area is internally provided with stuffing materials, and an inlet water pipe and a back-flush system are respectively arranged in the middle and the bottom of the non-aeration area; a mud guiding slope is arranged at the bottom of the non-aeration area, and a mud pipe is arranged at the bottom of the mud guiding slope; the running mode of intermittent water inflow and continuous water outflow is adopted, so that the liquid level of a reactor always changes between high liquid level and low liquid level, thus realizing that mixed solution can be periodically exchanged between the aeration area and the non-aeration area, and leading the aeration area to keep aerobic environment all the time so as to carry out aerobic nitrification reaction; the non-aeration area is in the alternating environment of anaerobic and anoxia so that anaerobic phosphorus release is carried out when no mixed liquid is cycling and that denitrifying phosphorus removal is carried out when the mixed liquid is cycling; and biological membranes in the non-aeration area carries out back washing regularly and excess sludge is discharged regularly from a mud pipe.

Provided are an elastic thread setting method in an endoloop and an elastic thread endoloop. The elastic thread setting method comprises the steps that one or more elastic threads are arranged along the outer wall of an endoloop spearhead, one or more threading holes is formed in the outer wall of the front end of the spearhead, the front ends of the elastic threads penetrate into the corresponding second ports of the threading holes, penetrate through the threading holes and penetrate out of the corresponding first ports of the threading holes, elastic thread loops are formed in a slipknot mode, the loops are reversely arranged on the outer wall of the front end of the spearhead in a sleeving mode, and the pore diameter of each threading hole is larger than the diameter of the corresponding elastic thread and smaller than the diameter of the knot point of the corresponding slipknot; when the tail ends of the elastic threads are tightened to make the loops get away from the pipe orifice of the spearhead and the knot points of the slipknots are tightened to the first pores, the first pores are taken as acting points, and the elastic threads are continuously tightened to make the pore diameters of the elastic thread loops gradually shortened. The invention further discloses the elastic thread endoloop using the setting method, the structure is simple, operation is convenient, an operation can be completed by one person, misoperation can be avoided, the wound surface of target tissues after the operation is extremely small, and postoperative complications and the probability of bleeding can be reduced.

The invention provides a fluorogenic culture medium of Enterobacter sakazakii, a test kit and a test method thereof, and relates to a method for testing microbe and a composition used by the method. The fluorogenic culture medium comprises the compositions as follows: 8 to 20 grams of peptone, 4 to 7 grams of beef extract powder, 4 to 7 grams of sodium chloride, 1.0 to 2.0 grams of cholate, 12 to 20 grams of agar, 0.05 to 0.5 grams of X-a-glucopyranoside, 0.01 to 0.04 grams of Na2CO3, 0.3 to 2.0 grams of ferric ammonium citrate, and 0.3 to 2.0 grams of sodium thiosulfate. The test kit consists of the fluorogenic culture medium of Enterobacter sakazakii, an enriched liquid A ,namely buffer peptone water culture medium, and an enriched liquid B, namely modified lauryl sulfate pancreas peptone broth. The test kit is configured simply, and the test method has high sensitivity in detection, so the method is suitable for treating large flux samples.

The invention discloses a preparation method of a filtering medium for removing micro radioactive substances in water, comprising the following steps: a. mixing raw materials containing ultra-high molecular weight polyethylene, active carbon, zeolite powder, diatomite powder, attapulgite powder, magnesium hydroxide powder and a gas generation agent according to the weight ratio of 250-350 to 20-100 to 10-100 to 20-110 to 20-100 to 20-100 to 70-150; and b. pressing, sintering and cooling a mixture obtained in the step a in a mould. The invention also discloses a filtering medium prepared by using the preparation method. The invention has the advantage that the disclosed technical scheme can remove the micro radioactive substances in the water, and the removing rate can reach more than 96 percent.

The invention discloses an elastic thread ligation device and an elastic thread setting method; a gun head comprises a gun head body, a pull rod mount, a gun head sleeve, an elastic thread pull rod, and a gun head fixing sleeve; the outer wall of the gun head of the ligation device is provided with at least one elastic thread and a corresponding traction line, and the two penetrate one thread hole; the front end of the elastic thread forms a slipknot bail sleeved on the gun head fixing sleeve, and is hooked backwards on a hook; the front end of the traction line is connected with the elastic thread; when the elastic thread is released from the hook, the traction line and the elastic thread are simultaneously drawn, so the bail of the elastic thread and the traction line can leave the gun head; the elastic thread is continuously pulled, the thread hole on the gun head fixing sleeve can press the slipknot on the elastic thread bail; a bail hole diameter of the elastic thread can be reduced under the effect of two opposite forces. The elastic thread ligation device is simple in structure, convenient in operation, so operation can be completed by one person with no maloperation; postoperation wound surface of a target organ is very small, thus reducing postoperation complications and hemorrhagic rate.

The invention discloses a method for recycling and processing organic sludge as resources. After the solid content reaches the sludge entering standard by concentrating the sludge, the sludge enters a reactor; the organic sludge carries out the start of thermal digestion in the reactor first, and after the start is finished, the temperature of the sludge in the reactor automatically rises to 48-52 DEG C; after the start stage is finished, the sludge is in the operating stage of the thermal digestion, wherein the sludge is acidulated at high temperature by oxygen hydrolysis in a first reaction zone and is aerobically digested at high temperature in a second reaction zone; and after the temperature of the digested sludge discharged by the second reaction zone in the operating stage is lowered by a heat exchanger, the digested sludge is conveyed into a mechanical dehydrator for mechanical dehydration, and then, the sludge is manufactured into sludge cakes to be conveyed outside. The sludge can be processed by the method to be stabilized and harmless, and a large amount of nutrients, such as nitrogen, phosphorus, potassium and the like in the sludge are reserved, thus the sludge can be used as fertilizer or soil improving additives for safe agricultural use to achieve the purpose of using the sludge as resources.

The invention discloses a preparation method of a filter medium for removing acrylonitrile in water, which comprises the following steps: a) mixing polyethylene with ultra-high molecular weight, activated carbon, attapulgite powder, copper powder and a pore-generating agent, wherein the weight ratio of the polyethylene with the ultra-high molecular weight to the activated carbon to the attapulgite powder to the copper powder to the pore-generating agent is 200-300: 90-240: 100-200: 5-20: 100-120; and b) pressing the mixture obtained in the step a) in a die, sintering and cooling. The invention further discloses the filter medium prepared by utilizing the preparation method, a filter element utilizing the filter medium and a water purification device. Compared with the prior art, the filter medium has the advantages of being capable of removing the acrylonitrile in the water, leading the removal rate to be more than 95-99% and further achieving the purpose of improving the water quality; furthermore, the method is simple, raw materials for preparing the filter medium are wide, and the cost is low.