219results about How to "Short adsorption time" patented technology

The invention discloses a recycling device for an exhaust gas of a painted organic solvent. The recycling device comprises a painting fog removing device, a fan, an absorbing jar, a condenser and an oil-water separator which are connected in turn, wherein the painting fog removing device comprises a gas collecting tank, a cyclone dust collector and a bag type dust collector; the gas collecting tank is used for temporarily storing the exhaust gas of the organic solvent; and the gas collecting tank, the cyclone dust collector and the bag type dust collector are connected in turn. All componentsof the recycling device are reasonably and compactly jointed; collection efficiency is high; and the painting fog is efficiently removed while a trouble in frequently exchanging filter cotton is avoided. The invention also discloses a method for utilizing the recycling device for the exhaust gas of the painted organic solvent to recycle the organic solvent. The method comprises the following steps: removing the painting fog; absorbing; desorbing steam; condensing; and separating oil from water, wherein the step of removing the painting fog is carried out by changing the painting fog into painting powder and then efficiently removing the painting fog. Compared with a traditional process, the method is more reasonable, compact and labor-saving.

The invention discloses a nitrogen-doped mesoporous carbon-wrapped titanium dioxide composite photocatalyst as well as a preparation method and application thereof. The preparation method comprises the following steps: dissolving an organic ligand and Ti(OC3H7)4 into a mixed liquid of methanol and DMF according to a certain ratio, performing a hydrothermal synthesis reaction, performing centrifugation, and performing drying to obtain a titanium-based metal organic skeleton material (Ti-MOF); and performing pyrolysis on the obtained Ti-MOF in an inert atmosphere, and performing oxidation etching to prepare the nitrogen-doped mesoporous carbon-wrapped TiO2 composite photocatalyst. The obtained composite photocatalyst provided by the invention not only facilitates the adsorption, enrichment and mass transfer of low-concentration VOCs, but also can efficiently degrade the VOCs under driving of sunlight; and the composite photocatalyst has high degradation activity and stability in catalytic purification of the VOCs by visible light, the synthesis of the catalyst is simple, the preparation cost is low, and the composite photocatalyst has broad environmental protection application potentiality.

The invention discloses a process for preparing a composite adsorption material capable of simultaneously absorbing heavy metal ions and volatile organic substances in waste gas. The process comprises the following steps: (1) pretreatment of carbon nanometer pipes; (2) preparation of calcium chloride; (3) loading of calcium chloride; and (4) preparation of composite adsorption material, namely obtaining of the graphene-calcium chloride-carbon nanometer pipe composite adsorption material. According to the process for preparing the composite adsorption material capable of simultaneously absorbing heavy metal ions and volatile organic substances in waste gas, the high-adsorption-capacity composite adsorption material capable of simultaneously absorbing heavy metal ions and volatile organic substances in waste gas, which has the characteristics of nanometer structure, stable properties, large specific surface area and special property of adsorbing heavy metals by calcium chloride, is obtained, can be used for treatment of waste gas with high toxicity, low concentration and high fluidity, and has the advantages of short adsorption time and high adsorption efficiency.

The present invention provides a method for making modified jacobsite, Al-doped maghemite or modified maghemite nanoparticles that can be used to adsorb heavy metals, such as Cr(VI), found in wastewater. The magnetic nanoparticles can be separated using a magnetic field after adsorbing heavy metals from wastewater, and processed for reused.

The invention relates to the technical field of nano material preparation and energy environmental protection, in particular to high-performance micro-nano multilevel-structure MoS2 material and a preparation method thereof. The preparation method is characterized in that nonionic surfactant polyglycol is introduced to allow MoS2 super-thin nano sheets generated by reaction to self-assemble into nano-sphere units, the nano-sphere units further assemble to form microspheres with a micro-nano multilevel structure, the microspheres are 2-10 micrometers in diameter, the nano-spheres are 50-200 nanometers in diameter, the nano sheets are 100-300 nanometers in length, 100-300 nanometers in width and 2-50 nanometers in thickness, the nano-sphere units interweave to form the microspheres, and the specific surface area of the microspheres is 10-100m<2> / g. The MoS2 material can bring the advantages of high activity and high efficiency of nano units into play. The preparation method completed in one step under a hydrothermal condition is simple in process, low in energy consumption and cost, short in preparation cycle, environmental friendly, beneficial to engineering large-scale preparation and application, and the like.

A system for removing carbon dioxide from a carbon dioxide laden gas mixture, the system comprising two groups of carbon dioxide removal structures, each removal structure within each group comprising a porous solid mass substrate supported on the structure and a sorbent that is capable of adsorbing or binding to carbon dioxide, to remove carbon dioxide from a gas mixture, the sorbent being supported upon the surfaces of the porous mass substrate solid; an endless loop support for each of the groups of the removal structures, the endless loop support being so arranged as to move the support structures of each group along a closed curve while being exposed to a stream of the gas mixture; and a sealable regeneration box at one location along each of the endless loop supports, in which, when a porous solid mass substrate is sealed in place therein, carbon dioxide adsorbed upon the sorbent is stripped from the sorbent and the sorbent regenerated; each removal structural supporting a porous substrate in a position to be exposed to a flow of carbon dioxide laden gas mixture so as to allow for the removal of CO2 from the gas mixture; the number of removal structures to the number of regeneration boxes being directly determined by the ratio of the time to adsorb CO2, from a base level to desired level on the sorbent, to the time to strip the CO2 from the desired level back to the base level.

The invention discloses a preparation method and an application of an adsorbent. Raw materials of the adsorbent are derived from monohydrallite tailings and diatomite, the raw materials are rich, the cost is low, and a good absorption effect of the obtained adsorbent is achieved. Monohydrallite and preprocessed diatomite in different proportions are uniformly mixed and roasted to obtain a composite adsorbent; prepared absorption materials can be used for absorbing multiple antibiotics in pharmaceutical wastewater. The preparation method and the application are proposed for solving the problem that a large quantity of antibiotics exist in the pharmaceutical wastewater, the antibiotics can be recovered and enriched, and the migration of the antibiotics in the natural world is inhibited. According to the preparation method and the application, the monohydrallite tailings serving as wastes and the diatomite serving as cheap natural minerals are used as raw materials, and the composite adsorbent is synthetized by using a high-temperature solid-phase method. Compared with an existing technology, the preparation method and the application have the advantages that the monohydrallite raw material is a solid waste, the diatomite raw material is low in cost and easily-available, the preparation process is simple, the industrial production is easily realized, and the aim of treating wastes by using wastes is fulfilled.

The invention discloses a processing method and system for inferior crude oil. The method comprises the steps as follows: a, feeding hydrogen-containing gas and the inferior crude oil into a fluidized bed hydrogen absorption zone (I) of a fluidized bed riser reactor for contact with a first catalytic cracking catalyst and a hydrogen adsorption reaction to obtain a hydrogen absorption product; b, feeding the hydrogen absorption product obtained in the step a into a riser cracking zone (II) of the fluidized bed riser reactor for contact with a second catalytic cracking catalyst and a catalytic cracking reaction to obtain catalytic cracked oil-gas. The inferior crude oil processed by the system with the method has the advantages that the conversion rate of the inferior crude oil can be increased substantially, the yield of dry gas and coke is reduced, and accordingly, clean and efficient use of the inferior crude oil is realized.

The invention discloses a group enhanced type magnetic nanometer water treatment agent and a preparation method and application thereof. The preparation method is characterized by comprising the following steps: accurately weighting hexahydrate ferric chloride and anhydrous sodium acetate as reaction raw materials; firstly, dissolving the raw materials into ethylene glycol; then, adding polyethylene glycol to disperse; adding solution into a high-pressure reaction reactor container to react; carrying out magnetic adsorption to obtain Fe3O4 magnetic nanoparticles; taking ethyl orthosilicate as a silicon source to enable silicon dioxide to cover the surface of the Fe3O4 magnetic nanoparticles; taking silane coupling agent as an amino source to graft an -NH2 group to the surface of the silane coupling agent to obtain Fe3O4@SiO2-NH2 magnetic nanoparticles; finally, under a constant temperature, stirring to modify the amino and sulfydryl group of cysteine on the surfaces of the Fe3O4@SiO2-NH2 magnetic nanoparticles to obtain group-enhanced magnetic nanometer water treatment agent Fe3O4-SiO2-NH2-L-Cys. The preparation method has the advantages of simpleness in preparation process operation and easiness in realizing reaction conditions. In addition, the group enhanced type magnetic nanoparticles prepared with the preparation method has the advantages of narrow particle size distribution, good stability, good adsorption function for various heavy metal ions and high adsorption efficiency.

The invention belongs to the technical field of chemical adsorption materials, and particularly relates to a nitrogen-doped magnetic porous carbon material as well as a preparation method and application thereof. A nitrogen-doped porous magnetic material N-PMC is successfully synthesized by utilizing a one-pot method, and the material has a relatively high specific surface area, developed porosityand a nitrogen-doped alkaline active site. The preparation method and the obtained product have the following advantages: (1) simple synthesis with the one-pot method, (2) large specific surface area, (3) ultrahigh methyl blue (MB) adsorption capacity, and (4) short adsorption time; the N-PMC has an ultrahigh MB adsorption capacity, wherein the maximum adsorption capacity is 1053.5 mg / g<-1>, andis far greater than that of an MB adsorbent reported in current literatures. In addition, the N-PMC has extremely good recyclability, and the material can be quickly separated from a solution under the action of an external magnetic field. The N-PMC is very likely to become an adsorbent, which has the broadest application prospects, for adsorbing the MB in water.

The method of treating industrial waste water containing cadmium with waste beer yeast includes treating waste yeast mud from brewery with alkali to obtain biological adsorbent of beer yeast, adding the biological adsorbent into industrial waste water containing cadmium for multiple stage of circular adsorption, adding fine husk powder via stirring and press filtering, incinerating the filter cake to obtain ash containing metal cadmium and recovering cadmium. The present invention has effective recovery of cadmium, simple technological process and no environmental pollution.

The invention discloses a method for preparing an ammonia nitrogen adsorbent by using a banana peel. According to the method, the ammonia nitrogen adsorbent can be prepared by dehydration, crushing, soaking and scrubbing. Compared with the common method using peels and shells to prepare an activated carbon adsorbent through heating at high temperature, the method disclosed by the invention is simple and feasible in operation and has no need of heating, low energy consumption and high yield. The invention also provides an application of the ammonia nitrogen adsorbent prepared by using the method disclosed by the invention. The ammonia nitrogen adsorbent product prepared by the method for preparing the ammonia nitrogen adsorbent by using the banana peel disclosed by the invention has good adsorption effect on the ammonia nitrogen in 10-150mg / L of ammonia nitrogen aqueous solution, the time for reaching adsorption balance is short, the adsorptive property is stable, and the ammonia nitrogen adsorbent can be used for adsorption treatment of nitrogenous waste water. Meanwhile, the method disclosed by the invention also can realize the reclamation of the banana peels.

The invention provides a lithium adsorbent forming process using sponge as a vector, and relates to a lithium adsorbent forming method which is used for adsorbing lithium in salt lake brine, seawater, well brine and other lithium-containing solutions. The forming process comprises the following steps: foaming powdered adsorbent and a sponge raw material, wherein the chemical characteristics of the adsorbent are not changed in the foaming process; and preparing blocky sponge by the powdered adsorbent to adsorb lithium ions in the salt lake brine. The forming process has the advantages that: by the blocky sponge lithium adsorbent prepared by the process, the problems that the powdered adsorbent is easily lost and operation is hard in the adsorbing process are fundamentally solved; and the sponge lithium adsorbent has high adsorption speed, larger specific surface area and long service life.

The invention provides a vacuum pressure swing adsorption system, which comprises six adsorbers, two groups of independent blowers and three groups of independent vacuum pumps, wherein each group of blowers are connected with the inlet ends of four adsorbers respectively, each group of vacuum pumps are connected with the inlet ends of two adsorbers respectively, the inlet end of each adsorber is communicated with the atmosphere, the outlet ends of the two adsorbers connected with the each group of vacuum pumps are connected, and the outlet end of each adsorber is connected with a product gas tank. The vacuum pressure swing adsorption system cyclically executes the following steps of: adsorption, forward pressure release, vacuum desorption and pressure charge, wherein the ratio of the execution time of the adsorption step to the execution time of the vacuum desorption step is less than 1. The system can enlarge oxygen production scale, reduce the air quantity of the blowers, prolong the vacuum desorption time and reduce the pumping speed of the vacuum pumps so as to reduce energy consumption of the system and save the cost.

The invention discloses a two-stage PSA method for recovering C2+ from refinery dry gas according to concentration, which relates to the technical field of separating and recovery of in valuable substances in petrochemical tail gas. The method comprises a pretreatment process, a C2+ adsorption concentration process, an intermediate purifying process, and a C2+ adsorption refining process, wherein, the pre-treated refinery mixed dry gas is introduced into the CO2+ adsorption concentration process, then flowed non-adsorption phase gas is the adsorption exhaust gas, or directly taken as hydrogen (H2) product gas, or taken as fuel gas, or taken as raw material gas for extraction of hydrogen for output; the flowed adsorption phase gas forms the intermediate gas through the intermediate purifying process, and then is introduced into the C2+ adsorption refining process for refining, the flowed non-adsorption phase gas is taken as the raw material gas for mixing with the refinery mixed dry gas, a mixture is returned to the C2+ adsorption concentration process; the flowed adsorption phase gas has the C2+ concentration being more than 90-95% (a volume ratio), wherein the methane impurity concentration is less than 4%, the flowed adsorption phase gas is taken as the C2+ concentrate product gas for output, and the yield of C2+ is more than 90-95%.

The invention provides porous phosphorus removal ceramisites and a preparation method thereof. The ceramisites are prepared from the following raw materials in parts by weight: 55-85 parts of attapulgite, 10-30 parts of crop straws and 10-20 parts of lanthanum carbonate. The raw materials are subjected to the steps of blending, preparing a blank, sintering and cooling to prepare the porous phosphorus removal ceramisites. The ceramisites provided by the invention are simple in preparation process and high in adsorption rate, the cylinder pressure strength meets cylinder requirements on high-strength lightweight aggregates in national standards, the phosphorus adsorption capacity of the ceramisites in a wide pH value range of 1-12 is high, and the maximum phosphorus removal rate can reach 98.6%. Because the ceramisites have strong acid and alkali resistance, after adsorbing phosphorus and being eluted by a sodium hydroxide solution, the porous phosphorus removal ceramisites not only can realize recovery of adsorbed phosphorus but also can be obtained again, and are convenient to recycle, so that resources can be effectively saved. The ceramisites can be widely applied to the field of practical engineering to achieve an aim of treatment of wastes with processes of wastes against one another.

The invention discloses graphene oxide / polymer gel as well as a preparation method and application thereof. The preparation method comprises the following steps: adding polyacrylamide into a graphene oxide solution to form a blended solution, performing stirring for uniform mixing at room temperature to obtain graphene oxide / polyacrylamide gel, and performing freeze drying on the obtained gel to obtain an adsorbent. The adsorbent provided by the invention is a rapid and efficient purifying adsorbent for purifying cationic dye wastewater, can rapidly and efficiently adsorb cationic dye in the wastewater, and is simple in preparation route, convenient in operation, high in adsorption capacity and easy to recycle. When the adsorbent provided by the invention is applied to purification of the dye wastewater, especially the cationic dye wastewater, the cationic dye in the wastewater can be rapidly and efficiently adsorbed, so that the operation is convenient and the efficiency is high.

The invention discloses a short-hole-channel ordered mesoporous silica-sulfur-indium-zinc composite photocatalyst as well as a preparation method and application thereof. The short-hole-channel ordered mesoporous silica-sulfur-indium-zinc composite photocatalyst is prepared through the following steps of mixing ethyl orthosilicate with ZrOCl2, zinc salt, indium salt and a reducing agent so as to obtain a mixture, in the presence of a surfactant, sequentially performing sol-gel treatment, hydrothermal treatment and alcohol ultrasonic treatment, performing sucking filtration, performing cleaning and performing drying. According to the photocatalyst, the integration of adsorption and photocatalytic oxidation is realized, the photocatalyst has high adsorption properties and high photocatalytic activity on volatile organic compounds (VOCs), and hydroxyl radicals produced on the surface of a catalyst can effectively degrade the VOCs adsorbed and enriched by materials in an in-situ manner, so that the reaction rate and the reaction efficiency of photocatalytic degradation on the VOCs can be substantially improved, the photocatalyst can be used as an adsorbent or the photocatalyst for organic contaminants in the field of environmental protection, and the photocatalyst has wide environmental protection application potential.

The invention discloses a method for removing tetracycline in wastewater by virtue of a magnetic composite adsorbent. The method comprises the following steps: adding a self-made magnetic composite adsorbent into wastewater containing tetracycline so as to react, wherein pH value of a reaction system is 3-7; and after the reaction is finished, separating and recycling the magnetic composite adsorbent from the wastewater under the action of an applied magnetic field, so as to finish the removal of tetracycline in the wastewater. The method has the beneficial effects that the adsorption capacity is large, the adsorption speed is high, tetracycline in the wastewater can be powerfully removed, and the adsorbent is easily separated and recycled.

The invention relates to a method for removing heavy metallic salt ions in industrial wastewater by utilizing shells. The method adopts shell granular preparation with diameter of 2+ / -0.3 mm, and preferably uses 1MH2SO4 for pretreatment in advance. The shell preparation has the best effect of adsorbing and removing Cu<2+> and Fe<3+>, and has a certain effect of adsorbing and removing Zn<2+> and Cd<2+> in mixed ion solution with Cu<2+>, Zn<2+>, Fe<3+> and Cd<2+> in industrial wastewater. The adsorption effect of the method to Fe<3+> can reach more than 99 percent, and the removing effect of the method to Cu<2+> and Zn<2+> can reach second-grade discharge standards for copper and zinc in China.

The invention relates to an adsorbent for removing sulfate ions contained in a water body as well as preparation and application thereof. The adsorbent is a poly (m-phenylenediamine) adsorbent obtained through chemical oxidation polymerization reaction at room temperature by taking m-phenylenediamine as a monomer and ammonium persulfate as an oxidant. The poly (m-phenylenediamine) adsorbent disclosed by the invention has the advantages of simple synthetic process, low cost, good removing effect on sulfate radicals contained in the water body, adsorption quantity reaching more than 107 mg.g<-1> and no secondary pollution; by means of the poly (m-phenylenediamine) adsorbent disclosed by the invention, the treatment effect on waste water with sulfate ion concentration lower than 500 mg.L<-1> can reach more than 95 percent, adsorption rate is high, and adsorption equilibrium can be achieved within 10 minutes; in addition, multiple adsorption results indicate that the desorption rate of poly (m-phenylenediamine) is about 95 percent, and the poly (m-phenylenediamine) can be effectively recycled.

The present invention discloses a method for enriching nature tetracycline antibiotics in aquatic products, and relates to a sample pretreatment in the field of food safety analysis. The method comprises the following steps: a 0.1 mol / L disodium ethylenediaminetetraacetate / Mcllvaine extraction buffer solution pretreatment, phenol or benzoic acid-modified polystyrene superparamagnetic bead adsorption, elution collection and the like, wherein an eluent can be directly added to liquid chromatography or LC-MS to carry out analysis. Compared with the traditional sample pretreatment method for tetracycline antibiotics in aquatic products, the method of the present invention has the following characteristics that: a sample pretreatment operation process is substantially simplified, a sample pretreatment time is shortened, the adsorbent use amount is reduced, and an extraction yield of the tetracycline antibiotics in the sample is increased.

The present invention provides a method for preparing ultra-high purity hexafluoroethane through an absorption method. According to the present invention, an absorption comprising one, two or three materials selected form a 3A type molecular sieve, a 4A type molecular sieve, a 5A type molecular sieve, a NaX type molecular sieve, a CaX type molecular sieve and active carbon is adopted to remove impurities in a hexafluoroethane crude product, wherein the absorption agent is subjected to an activation treatment before absorption, the purity of the prepared hexafluoroethane can achieve 99.999%, even 99.9999% and above, and the prepared ultra-high purity hexafluoroethane can be used as the etching gas / cleaning gas in the semiconductor / electronics industry.

The invention discloses a daylight continuous type solar energy additive refrigerating system in solar energy additive cooling domain, which is characterized by the following: comprising with 2-10 group heat collection bed set, condenser (8), storing liquid device (10), capillary tube (11)and evaporator (12); paralleling 2-6 vacuum pipe additive heat collection bed (13)as each heat collection bed set; arranging cooling water pipe (1)and mass transfer passage (5)at single vacuum pipe additive heat collection bed; penetrating through closed capping; connecting the cooling pipe to cooling water tower; arranging magnetic valve (7)between each heat collection bed and the evaporator, condenser; controlling by absorption and desorption state alternately. This invention possesses high cooling efficiency and big cooling power.

The invention provides a sulfydryl modified charcoal based on agricultural wastes, a preparation method and application thereof, and relates to the technical field of environmental protection. The preparation method of the sulfydryl modified charcoal based on agricultural wastes comprises the following steps: carrying out pyrolysis on raw materials of the agricultural wastes under anaerobic or anoxic condition so as to obtain charcoal; sieving the charcoal through a sieve of 50 to 70 meshes, taking a first screen underflow to be mixed with concentrated nitric acid for oxidation to obtain oxidized charcoal; sieving the oxidized charcoal through a sieve of 70 to 90 meshes, taking a second screen underflow to be mixed with a sulfhydryl compound for ultrasonic treatment, and then carrying outsuction filtration and drying. The preparation method is simple in technology and high in controllability, and is easy for industrial production. The sulfydryl modified charcoal prepared by using thepreparation method of the sulfydryl modified charcoal based on the agricultural wastes is good in adsorption performance, high in stability and short in adsorption time.

The invention relates to a cleaning device in a fully-automatic chemiluminescence immunity analyzer. The cleaning device comprises a first disk, a second disk and a cleaning piece, wherein a driving mechanism drives the first disk to rotate; a plurality of analysis containers are arranged at the peripheral part of the first disk at intervals, and magnetic microspheres used for adsorbing body fluid samples to be detected are put in the analysis containers; the second disk is coaxially arranged above a rotating disk, and the diameter of the second disk is smaller than the diameter of the first disk; a plurality of electromagnets are arranged at the peripheral part of the second disk at intervals; the cleaning piece is arranged on one side of the first disk and is opposite to at least one of the electromagnets in the second disk. The first disk rotates to drive the analysis containers on the first disk to selectively stay in the position of the cleaning piece. The cleaning device only needs one rotation disk and a plurality of electromagnets so as to realize that the magnetic microspheres in each analysis container are selectively controlled to be in an adsorption state or a non-adsorption state according to the demands, and the cleaning efficiency is greatly increased.

The invention relates to a dry method combined desulfurization and denitration technology and device for activated coke. The desulfurization and denitration device is a multi-section diameter-expanding fluidized bed concurrent with a gravity field. Exhaust gas containing NOx and SO2 firstly enters an ascending flue at the front end of a desulfurizing tower, cooling and humidifying are performed bya water atomizing nozzle, and ozone sprayed in the ascending flue oxidizes NOx and SO2 into high-valent-state NOx and SOx respectively; the exhaust gas enters the top of the fluidized bed and is mixed with the activated coke discharged from a stock bin, and the activated coke is fluidized; the activated coke moves downwards and enters diameter-expanding sections to finish the desulfurization anddenitration adsorption reaction; the exhaust gas enters a gas-solid separation device, the separated activated coke is fed into an desorption tower for regeneration, and enriched NO2 and SO2 gas are obtained respectively; finally, the regenerated activated coke is sent to the stock bin to participate in desulfurization and denitration again. The integrated desulfurization and denitration technology has the advantages of high efficiency, simple process, considerable comprehensive benefits and the like.

The invention discloses a preparation method and application of an antibiotic composite adsorbent, aiming at the problem that a great amount of antibiotics exists in pharmaceutical wastewater. The preparation method of the antibiotic composite adsorbent comprises the following steps: mixing reproducible raw material, namely grapefruit peel and flesh with cheap natural mineral bentonite, and heating intensely in a tubular furnace insulated with air by adopting a high-temperature solid phase method; and then compounding a composite adsorbent by a saline solution impregnating method. Taking example for three most commonly seen antibiotics of oxytetracycline, tetracycline and amoxicillin, the prepared composite adsorbent has excellent adsorption effect. Compared with the prior art, the preparation method and the application have the advantages that the used raw material grapefruit peel and flesh are agricultural reproducible wastes; the raw material bentonite is low in price and is easily available; the preparation technology is simple, and can achieve industrial production so as to achieve the aim of reducing waste by waste.

The invention discloses a preparation method and an application of a graphene film composite activated aluminum oxide adsorbent adsorbing heavy metal ions and organic matter from waste water. The preparation method comprises the following steps: 1) taking activated aluminum oxide as a substrate, adding activated aluminum oxide into a polyvinyl alcohol organic solution to allow the surface of activated aluminum oxide to be rich in hydroxyl, putting in an oven at 20-50 DEG C for drying, obtaining the pretreated substrate for later use; 2) immersing the pretreated substrate in an alcohol solution containing a silane coupling agent with a volume concentration of 0.1-10%, taking out the substrate for drying, adding the substrate into an organic solution containing 0.1%-10 wt% of graphene, performing reaction for 1-10h at 50-100 DEG C, and obtaining the graphene film composite activated aluminum oxide adsorbent. Activated aluminum oxide is combined with the graphene; uncontrollability of a nanomaterial during subsequent treatment is avoided; a nano technology is creatively applied to the treatment of the heavy metal waste water, and the organic waste water that is high in toxicity, low in concentration and difficult to degrade; and adsorption rates are all above 97%.

The invention discloses a method for extracting potassium from sea water by using a continuous ion exchange method and relates to a method for treating the sea water by using an ion exchange method. The method comprises the following steps that a simulation moving table is arranged by using 36 continuous ion exchange devices consisting of ion exchange columns which are provided with jackets and filled with sodium type clinoptilolite; the simulation moving table is divided into an adsorption zone, an elution zone and a regeneration zone; the adsorption process is operated in the adsorption zone by layers and three layers are carried out in parallel; the concentration of potassium in the sea water as a raw material is 0.61-1.52g / L; the concentration of potassium in the drained sea water after adsorption is 0.01-0.15g / L; the elution process is operated in the elution zone by columns and three layers are carried out in series to obtain a potassium-rich solution and the concentration of K<+> in the potassium-rich solution is 36.00-44.12g / L; and the regeneration process is operated in the regeneration zone by columns and three layers are carried out in series to obtain ammonium-containing salt water. The adsorption, elution and regeneration processes are simultaneously and continuously operated, and thus the operation period is shortened, the efficiency is increased, the cost is reduced and economic benefits are improved.