197results about How to "Has adsorption capacity" patented technology

The invention discloses an integrated flexible electrode and belongs to the technical field of electrochemical cells. The integrated flexible electrode is composed of three layers which are successively a polymer layer, a graphene layer and an active material layer. According to the invention, the multi-component integrated design is realized. The graphene layer is formed by dispersing and coating graphene onto the polymer layer. The active material layer is formed by coating slurry onto the graphene layer. After drying, the integrated flexible electrode material is obtained. The integrated flexible electrode material has excellent flexibility and tensile strength and is applicable to flexible cells. A preparation method of the integrated flexible electrode is simple and easy to control, can be applied to various electrode materials and has potential application value. Mass and low-cost preparation can be realized.

The invention discloses a heavy metal contaminated soil improving agent and a preparation method thereof, wherein the heavy metal contaminated soil improving agent includes the following components in parts by weight: 45-55 parts of cloud ear fungus residues, 25-35 parts of plant ash, 15-25 parts of silkworm excrement, 20-30 parts of quick lime, 20-30 parts of medical stone, 5-10 parts of chitosan, 5-8 parts of fumed silica, 200-250 parts of filter mud from a sugar factory, 5-7 parts of potassium fulvate, 3-5 parts of bone meal, and 80-100 parts of water. The prepared soil improving agent has good improvement effect, can reduce the content of heavy metals in the soil in a long time, moreover, makes full use of the waste, saves resources and reduces pollution to the environment.

The invention relates to the field of biomass resource utilization and provides a device and method for jointly preparing bio-oil and multihole biochar through fuse salt by spraying biomass for pyrolysis. Fuse salt with the high heat storage-heat transfer function is adopted as a heat carrier, a spraying mode is adopted to enable fuse salt to make complete contact with biomass to achieve quick pyrolysis, and fuse salt ions provide homogeneous catalysis or chemical reaction control for biomass pyrolysis. Fuse salt can store heat released in the reaction process and serves as a reaction medium so that chemical heat and external heat can be reasonably utilized. Pyrolytic carbon is continuously permeated and flushed through fuse salt to clear away tar blocking carbon gaps so that the gaps of the pyrolutic carbon can be open and unblocked, and multihole biochar with a certain adsorption capacity is formed. A bi-fuse salt spraying pyrolysis system is adopted. According to the method, the technical process is short, operation is easy and convenient, raw materials are fed in or discharged out through a pyrolysis basket, separation between pyrolysis carbon and fuse salt is easy, and finally bio-oil and biochar are jointly prepared through biomass pyrosis.

The invention discloses a preparation method of amphipathic acrylic acid / maleic anhydride (AA / MA) grafted esterified hydroxypropyl cassava starch. The preparation method comprises the following steps of: taking cassava starch as a major raw material and anhydrous ethanol as a solvent, carrying out an etherification reaction with propylene epoxide in an alkaline medium to obtain hydroxypropyl cassava starch; synthesizing esterified hydroxypropyl starch by taking benzoyl chloride as an esterifying agent, and implementing graft copolymerization on esterified hydroxypropyl starch and a monomer solution obtained by the neutralization of acrylic acid and ethidene diamine so as to synthesize the amphipathic AA / MA grafted esterified hydroxypropyl cassava starch. For the amphipathic AA / MA grafted esterified hydroxypropyl cassava starch, the substitution ratio of hydroxypropyl is 0.18-0.36, the substitution ratio of esterification is 0.089-0.12, and the grafting efficiency and the conversion ratio of a monomer are respectively 44.0% and 63.4%. According to the preparation method disclosed by the invention, propylene epoxide and acrylic acid are adopted as hydrophilic groups to modify the cassava starch, and then benzoyl, methyl acrylate and other hydrophobic groups are bonded, so that the amphipathic AA / MA grafted esterified hydroxypropyl cassava starch simultaneously has negative ions and hydrophobic groups and can be widely applied to fields of environmental protection, ecological repair, water treatment, heavy metal absorption and the like by being taken as an environment material.

The invention relates to the technical field of lithium battery assembly and particularly relates to automatic lithium battery assembly equipment and an assembly method. The automatic lithium battery assembly equipment comprises a support frame, a conveying mechanism and an arranging and conveying mechanism. By adopting a cover clamping mechanism, an end cover at an upper end of a battery core can continuously cover the corresponding assembled battery core, and meanwhile, an inserting rod is matched with an inserting hole before the cover is pressed, so the positioning effect is realized, the end cover can be accurately clamped on the battery core, a problem that the end cover is difficult to clamp on the battery cell due to inaccurate alignment of the end cover and the battery cell is avoided, and meanwhile, each fixed group plate on the transmission belt can be fixed by adopting the clamping and fixing group in the conveying process of the conveying mechanism, so the fixed group plates cannot move due to conveying in the whole conveying process; accuracy of subsequent insertion of the battery cell is ensured, and a problem that it is difficult to ensure that the battery cell and the battery cell fixing plate are accurately aligned and inserted into the insertion hole is solved.

The invention relates to a catalyst for rapid pyrolysis and liquefaction of biomass as well as a preparation method and application of the catalyst and belongs to the technical field of biomass energy. The catalyst consists of a carrier and an active component, wherein the active component is loaded onto the carrier through an immersion method. The carrier is a side product rapid pyrolysis carbon produced from the rapid pyrolysis and liquefaction of biomass; the rapid pyrolysis carbon is deoiled, delimed, activated and oxidized to form a middle-large hole structure with holes of 20-80 nanometers; the active component is a transition metal which is immersed onto the carrier through the steps of loading and reducing; then the catalyst for the rapid pyrolysis and liquefaction of biomass is prepared. By adopting the catalyst provided by the invention, the problem of high additional value utilization of the side product rapid pyrolysis carbon is solved, the adaptability to a pyrolysis reaction environment is strong, and the directional adjustment and control for the rapid pyrolysis and liquefaction of biomass can be realized.

The invention relates to a method for treating low concentration organic pollutants in water, which takes a meso-porous silica-based material as a carrier for implementing the effective enrichment to the organic pollutants, then organic matters are degraded and mineralized by the light-Fenton or TiO2 photocatalysis method in a narrow enriched region. The silica-based material enriched with organic matters can be recovered and reused for avoiding the secondary pollution in water in the process of water treatment. The method has advantages of high efficiency and low cost. The method can be used for purifying and treating the persistent poisonous organic waste water containing micro- and trace organisms in industrial wastewater and municipal sewage.

The invention discloses a mining soil remediation method. The method comprises the following steps that the contaminated soil in a mining area is excavated with excavating equipment and is subjected to preliminary filtration; a soil sterilant is added into the soil, the soil and the soil sterilant are stirred, and secondary filtration is conducted during stirring; straw manure and grass ash are applied to each mu of the contaminated soil surface, 5kg of a remediation agent is added to 100 times the mass of water to be sprayed to the soil surface; the soil is deeply ploughed, soil remediation agent to the soil surface; plants with enrichment capacity of heavy metal are planted in the soil, when the plants grow to the growth stage, a plant growth inhibitor is sprayed to the plants; when theplants grow to the maturity stage, a heavy metal pollution remediation promoter is sprayed; and harvesting is conducted during senescence of the plants to remove heavy metal contamination. The restoration method can effectively remediate the soil contaminated by keratinization, and is feasible for residential land and planting land.

The invention relates to a culture medium of needle mushrooms and a preparation method of the culture medium. The culture medium comprises the following raw materials in parts by mass: 30-50 parts of rice bran, 40-60 parts of corncobs, 4-8 parts of corn flour, 4-8 parts of bean pulp, 20-32 parts of bran, 12-20 parts of soybean hulls, 8-12 parts of sugar beet pulp, 6-8 parts of cottonseed hulls, 2-3 parts of Chinese herbal medicines, 2-3 parts of a calcium additive and 2-3 parts of orange peels. The culture medium is comprehensive in nutrition; the antibacterial property is improved; and meanwhile, the economic benefit is increased.

The invention provides a metallurgical wastewater flocculant which comprises the following ingredients in parts by mass: 15-26 parts of polyacrylamide, 10-18 parts of polyacrylate, 7-10 parts of aluminum potassium sulfate, 2-5 parts of natural organic acid and 5-12 parts of polysilicate. According to the metallurgical wastewater flocculant, the natural organic acid is one of oxalic acid, fulvic acid, tannic acid and tartaric acid, and the polysilicate is polysilicate aluminum or polysilicate ferrite.

The invention discloses a method for removing metal ions in water by utilizing magnetically-separated steel slag tailings. The method for removing heavy metal ions from waste water by utilizing magnetically-separated steel slag tailings containing less iron content comprises the steps of grinding, drying and screening the magnetically-separated steel slag tailings, and then placing into a reactor; adding waste water (containing heavy metal ions) into the reactor, and fully mixing; and separating solid from liquid to obtain tailings, and treating to discharge water. According to the method, as a material for water treatment, the magnetically-separated steel slag tailings is low in cost, wide in sources and large in specific weight, thus being convenient to recycle, and having less possibility of causing secondary pollution. In addition, the steel slag tailings belong to solid waste, thus achieving the purpose of treating wastes with wastes after being applied into waste water treatment, and having excellent economic and environment-friendly benefits.

The invention discloses a high-temperature-resisting anti-corrosive thermal-insulation composite lining structural member and a manufacturing method thereof. The high-temperature-resisting anti-corrosive thermal-insulation composite lining structural member comprises a metal shell, a light thermal-insulation lining material layer, a cellucotton layer and an anchor nail, further comprises a dew-point corrosion preventing coating layer, and can also comprise high-temperature-resisting alloy-steel wires and a high-temperature-resisting fiber paper layer. The manufacturing method comprises the following steps of welding and fixing the head of the anchor nail on the inner wall of the metal shell body, blade-coating the dew-point corrosion preventing coating layer, applying the light thermal-insulation lining material layer, and spray-coating the cellucotton layer. According to the invention, a composite lining layer is formed by the dew-point corrosion preventing coating layer, the light thermal-insulation lining material layer and the cellucotton layer through a special structure, which play the roles of resisting high-temperature, preventing dew-point corrosion and insulating heat simultaneously, and ensures that the composite lining layer can be combined with a shell body of a thermal facility into a firm integer; meanwhile, the composite lining structural member has better strain property on expansion on heating and contraction on cooling, and makes petrochemical thermal power equipment be used for a long time in the reliable and economical premise.

The invention discloses a porous thermal insulation filling material made of paper mill sludge and a preparation method thereof. Raw material paper mill sludge, cement, fly ash and gypsum are injected into a stirrer in proportion to be stirred evenly; a foaming agent is added into the stirrer, uniform mixing is performed to obtain mixed mortar; and the mixed mortar is contained in a storage chamber and undergoes rest curing foaming to obtain the semi-finished porous thermal insulation filling material; the semi-finished product is injected into a forming machine to be formed and granulated; the formed porous thermal insulation filling material undergoes natural curing, and a finished product is obtained. A mode of manufacturing the porous thermal insulation filling material made of the paper mill sludge is provided, the problem that existing paper mill sludge is stacked messily and pollutes the environment can be solved, and harmlessness, resource reutilization, economy and efficiency of the paper mill sludge can be guaranteed.

The invention belongs to the technical field of magnetized water and activated water, aims to solve the problems of insufficient magnetization intensity and unreasonable structure of conventional magnetized water, limitation of mineral selection for water quality activation, insufficient far infrared ray utilization and the like, and provides a unipolar water magnetizing and activating method. According to the method, water enters a unipolar magnetizing device through a pipeline to complete a unipolar magnetizing process, the magnetized water is subjected to mineral activation through an activation container and then flows out, meanwhile, a two-stage filtration procedure is performed before a unipolar magnetizing procedure, a natural reusable water quality purification and activation condition is better formed through energy ore element diffusion and energy diffusion, the effects that less than six small molecular groups are contained, the PH is higher than 7.7 and is weakly basic and negative magnetic energy and microelements meet the standard of high-quality mineral water are sufficiently guaranteed during water treatment, and water after unipolar magnetization and activation can effectively improve microcirculation of a human body and has the effects of thrombus resistance and immunity enhancement.

The invention provides a carbon nanotube supported catalyst and a preparation method thereof as well as application of the carbon nanotube supported catalyst in low-temperature catalytic oxidation ofCO. The method comprises the following steps: mixing carbon nanotubes with impregnation liquid containing copper salt and manganese salt to obtain a mixture; drying the mixture and then roasting the mixture to obtain the carbon nanotube supported catalyst. The catalyst takes the carbon nanotubes as a carrier, and takes copper manganese complex oxide as an active ingredient supported on the carrier. The experimental results show that the catalyst prepared by the embodiment of the invention keeps relatively-high catalytic activity and stability for 0.1 to 0.5 percent of CO under the condition that the low temperature is 0 to 22 DEG C, is suitable for eliminating CO by low-temperature catalysis in a typical enclosed space and also can be used for a toxin filtering agent material of respiratory protective equipment for emergency rescue in the enclosed space. Besides, the preparation method of the carbon nanotube supported catalyst, provided by the invention, is simple; active ingredients are low in content, and the cost is relatively low.

The invention discloses a gypsum board composed of raw materials and a binder. The raw materials comprises by weight: 20-40% of bamboo charcoal and 60-80% of gypsum powder. And the binder accounts for 20-35% of the total weight of the raw materials. Meanwhile, the invention also provides a preparation method of the gypsum board. The method sequentially includes the steps of: 1) mixing the bamboo charcoal and gypsum powder and stirring the them for 1-12h so as to obtain the raw materials; 2) adding a TiO2 sol into the raw materials and mixing them for 1-4h, thus obtaining a mixture; 3) subjecting the mixture to high pressure molding, then curing and finally heat treatment, thus obtaining the gypsum board. The gypsum board provided in the invention has the functions of adsorption, far-infrared radiation and anion release, etc.

The invention discloses an anthraquinone lithium battery positive pole and a preparation method thereof. The concrete preparation method comprises the following steps: (1) acetylene black powder is added to a grinding miller and ground for 0.5 hour to 2 hours, and the ground acetylene black powder is sieved by a 1000-mesh sieve; (2) anthraquinone derivatives, the sieved acetylene black powder, N, N-dimethyl formamide (DMF) are mixed, and blended by a mould wash mixer at a room temperature for one hour at the rotation speed of 600 r / min, so that treated carbon dust is obtained; (3) the treated carbon dust is mixed with polyvinylidene fluoride, so that positive pole slurry is obtained; and (4) the slurry is coated on an aluminum foil with a scraper and stoved dry, so that a positive pole sheet is obtained. The anthraquinone lithium battery positive pole is simple in preparation procedure and free from the phase of synthesis of polymers. A lithium battery prepared by means of the positive pole has the advantage of being large in specific capacity.

The invention discloses a system and a method for promoting coal fly ash to adsorb and remove pollutants such as mercury in flue gas. The adsorbing and removing effects of the fly ash on the mercury are effectively improved by taking measures of reducing the temperature of the flue gas, prolonging the adsorption retention time of the fly ash, screening the fly ash with high mercury adsorbing capability, increasing the concentration of the fly ash with high mercury adsorbing capability and the like; on the basis, the method and the system can be further combined with an oxidation mercury removal technology and / or adsorption mercury removal technology, the defects in the prior art are overcome and efficiency mercury removal is realized; in addition, a good effect on control of other pollutants such as SO3 in the flue gas is achieved; and therefore, the method and the system have wide applicability, and the requirements of different coal-fired power plants on the pollutants such as mercury in the flue gas can be met.

The invention discloses a refuse landfill liner utilizing waste incineration ash and a construction method thereof, and belongs to the technical field of solid waste treatment and utilization. The refuse landfill liner utilizing the waste incineration ash and the construction method thereof are used for solving the problems of safety of the waste landfill liner and disposal of the waste incineration ash. The structure of the refuse landfill liner is as follows: a compacted clay layer 2, a geomembrane 3, a geonet 4, a solidified fly ash layer 5 and a waste incineration bottom slag drainage adsorption layer 6 are sequentially arranged from bottom to top. The construction method of the refuse landfill liner comprises the following steps: a, laying the compacted clay layer 2 on the surface ofa foundation 1, and then sequentially laying the geomembrane 3 and the geonet 4; b, laying and compacting a bacteria-containing fly ash mixture; c, spraying a cementing liquid on the surface of the bacteria-containing fly ash mixture and letting the bacteria-containing fly ash mixture stand for 12 hours; d, repeating the step c until the cementing liquid cannot permeate the surface of the bacteria-containing fly ash mixture, and letting the bacteria-containing fly ash mixture stand for 24 hours; e, repeating the steps c and d for 4 to 6 times so as to complete the construction of the solidified fly ash layer 5; and f, laying and compacting the waste incineration bottom slag drainage layer 6 so as to complete construction of the refuse landfill liner.

The invention provides a preparation method of a negative ion antibacterial adsorption material composition. The method is characterized in that (a) 13X molecular sieve raw powder accounting for 60 to75 percent of the total mass of the composition, alkali metal oxides accounting for 10 to 20 percent of the total mass of the composition, tourmaline powder accounting for 10 to 20 percent of the total mass of the composition, and the balance of bonding agents and hole expansion agents are proportionally mixed to form mixed powder of a uniform system; (b) the mixed powder is soaked into a water solution of AgNO3, then, ultrasonic concussion is performed to form suspension; next, a NaOH solution is added for regulating pH to 10; a mixed solution is formed. (c) the mixed solution is sealed andheated under the hydrothermal condition; after the separation, sintering is performed at high temperature; crushing is performed to obtain the composition. Compared with the prior art, the preparationmethod provided by the invention has the advantages that the cost is low; for indoor pollution gas, the adsorption capability is realized; the decomposition and desorption prevention performance is also realized; a certain number of negative ions can also be released; the adsorption effect is promoted; beneficial effects are achieved on the human body.

The invention discloses a method for removing harmful anions from an aqueous solution by adopting a Friedel salt or Kuzel salt. The method comprises a step of removing the harmful anions from the aqueous solution by adopting the Friedel salt or Kuzel salt, wherein the harmful anions comprise one or more of F<->, CN<->, SCN<->, As (III, V) and Cr (VI), and the aqueous solution comprises one or more of drinking water, underground water sources, industrial wastewater and tailings water containing harmful anions. According to the method disclosed by the invention, the Friedel salt or Kuzel salt is applied to the aqueous solution containing the harmful anions, the removal efficiency of the harmful anions is very high, and the effect is obvious; the materials required for preparing the Friedel salt or Kuzel salt are wide in source, low in preparation energy consumption and less in investment; by adopting the method to remove the anions from the aqueous solution, the flow is short and the cost is low, so that the method has a wide application prospect.

The invention provides a preparation method of supported zirconia hydrate with a high specific surface area through dispersion modification and an application thereof. The preparation method comprisesfollowing steps: using a surfactant to carry out surface modification on macroporous cation exchange resin with zirconium ions: mixing a surfactant and sodium hydroxide to prepare a mixed solution, adding macroporous cation exchange resin into a zirconium chloride / hydrochloric acid solution to carry out reactions, then adding the macroporous cation exchange resin with zirconium ions into a mixedsolution containing a surfactant to carry out reactions, after reactions, washing the cation exchange resin by distilled water and anhydrous ethanol in sequence, and drying the cation exchange resin to obtain the product. According to the preparation method, a surfactant is used to adjust the dispersion state of zirconia hydrate in the cation exchange resin so that zirconia hydrate is dispersed inthe cation exchange resin in a nanometer level, the specific surface area and heavy metal adsorbing performance of the composite material are both enhanced, the supported zirconia hydrate is used toprocess desulfurization wastewater, zinc ions and organic substances in wastewater can be removed at the same time, the using amount of nano-filter membrane is reduced, and the cost is reduced therefore.

The invention disclose a phase-transition absorption air dehumidifying device, which comprises consists a phase-transition reactor (1) in which a cavity (12) is arranged; wherein, a top opening (11) and a bottom opening (13) of the phase-transition reactor (1) are both communicated with the cavity (12); the top opening (11) is separately connected with an outlet pipe for processed air (61) and an inlet pipe for regenerated air (62) in a sealed way; the bottom opening (13) is separately connected with an inlet pipe for processed air (63) and an outlet pipe (64) for regenerated air in a sealed way; the other end of the inlet pipe for regenerated air (62) is connected with a heater for regenerated air (8); an inlet manifold for heat medium (81) and an outlet manifold for heat medium (82) are respectively arranged on the heater for regenerated air (8); an inner-cooling ventilation pipeline (2) is arranged in the cavity (12). The application of the device of the invention to the dehumidification provides good dehumidification effect, and can ensure that the temperature at the outlet for processed air is low.

The invention provides a nano waterproof breathable film, made from the following materials in percent by weight: 30-35% of low-density polyethylene, 15-20% of linear polyethylene, 12-18% of polylactic acid, 2-6% of hydroxyethyl cellulose, 11-16% of starch, 0.6-0.8 part of nano titanium dioxide, 10-15% of lecithin, 2-5% of tetraethyl orthosilicate, 3-8% of 2-hydroxysuccinic acid, 10-15% of polyvinyl alcohol, 2-10% of a plasticizer, and 2-10% of a lubricant. In connection with the preparation method provided herein, the waterproof breathable nano film can be produced; the film is imparted good water resistance and breathability; the produced nano film is light and thin, soft to touch, high in tensile strength and suitable for use as a surface material for sanitary products.

The invention discloses a calcium-based adsorbent for defluorination and an application thereof and belongs to the field of wastewater treatment. Dolomite and coal ash are taken as raw materials and are compounded into the calcium-based adsorbent for defluorination, provided by the invention, according to a hydrothermal method. The application steps are as follows: (1) compounding calcined products of dolomite dust with the coal ash at the compounding temperature of 170-200 DEG C for 6h, so as to obtain the calcium-based adsorbent; and (2) adding the calcium-based adsorbent into wastewater at the dosage of 1.25-25g / L, magnetically stirring for 10min-30min, precipitating or centrifuging, and then separating solid from water. The calcium-based adsorbent for defluorination can effectively absorb fluorine pollutants under a low pH condition, and has physical and chemical absorption effects. The effluent meets GB8978-1996 class-1 emission standard.

The invention discloses a Fe3O4 (at) COFs adsorbing material and application thereof in removing organic dyes in wastewater, and belongs to the technical field of environmental sewage treatment. By using Fe3O4 NPs as a carrier, terephthalaldehyde (TPA) and tetra (4-aminophenyl) methane (TAMB) as bridging monomers and acetic acid as a catalyst, a novel Fe3O4 (at) COFs adsorbing material is prepared. The prepared Fe3O4 (at) COFs adsorbing material has the advantages of large surface area and strong adsorbability; the adsorbent has the advantages of large surface area, strong adsorbability, easiness in solid-liquid separation, reusability and the like, has an excellent adsorption effect on organic dyes in wastewater, and has little influence on the adsorption effect due to changes of environmental factors such as pH value and ion strength, so that sample pretreatment is not needed, and the adsorbent has huge potential in environmental treatment of dye wastewater.

The invention discloses a method used for deep desilication of a sodium aluminate solution containing silicon. According to the invention, brine containing magnesium chloride is used as a raw material to prepare magnalium hydrotalcite (Mg6Al2 (OH) 16CO3.4H2O), and the magnalium hydrotalcite is used as a desilication agent to carry out deep desilication on the sodium aluminate solution containing the silicon; and at least 80% of silicon dioxide can be removed from the sodium aluminate solution containing the silicon; rich seawater or salt lake brine calcium chloride resources are used to prepare the magnalium hydrotalcite; the magnalium hydrotalcite is used to carry out deep desilication on the sodium aluminate solution containing the silicon in the alumina industry; waste resources are recycled; the environment pollution is reduced; the alumina production cost is reduced; and the economic efficiency of an enterprise is improved.

The invention discloses a high-safety medical faucet water-outlet pipe with the adsorption capacity. The high-safety medical faucet water-outlet pipe is characterized in that a threaded connector and a connecting part being matched in shape with the threaded connector are respectively arranged at the two ends of a water-outlet pipe body; a molecular sieve filter element is clamped in the inner side of the connecting part; the water-outlet pipe body is divided into two layers; arc-shaped grooves which are sunken towards the central axis direction of the water-outlet pipe body are formed in all four sides of the pressure-resistant structure layer; and the gaps among the arc-shaped grooves and the plastic layer are filled with a flexible magnet. The high-safety medical faucet water-outlet pipe has the advantages that through additional arrangement of the molecular sieve filter element, most impurities in water can be purified; the gap between the pressure-resistant structure layer and the plastic layer is filled with plastic foam, so that the high-safety medical faucet water-outlet pipe can be protected from cracking caused by heat expansion or cold contraction when being used in cold or hot weather; and as the arc-shaped grooves which are sunken towards the central axis direction of the water-outlet pipe body are formed in all four sides of the pressure-resistant structure layer, the pressure-resistant capacity of the high-safety medical faucet water-outlet pipe can be enhanced.

The invention relates to the technical field of diatom and discloses composite diatom purification particles. The composite diatom purification particles are prepared from raw materials in parts by weight as follows: 40-60 parts of diatomite, 6-14 parts of zeolite powder, 3-5 parts of dodecy dimethyl benzyl ammonium bromide, 2-5 parts of sodium bicarbonate, 3-7 parts of a photocatalyst, 1-3 partsof nano photocatalytic titania, 1-2 parts of antibacterial powder, 3-5 parts of nano tourmaline powder, 3-5 parts of infrared functional powder and 1-3 parts of titanium dioxide. According to the composite diatom purification particles and a preparation method thereof, zeolite powder is added and has adsorption capability for pollutants in the air, nano photocatalytic titania has adsorption and decomposition functions on pollutants in the air, the antibacterial powder can effectively remove bacteria, nano tourmaline powder has higher negative ion production and far infrared emittance and is matched with the infrared functional powder to release negative oxygen ions and far infrared rays while cleaning air, and the cleaning effect of the composite diatom purification particles on the pollutants in the air is improved through adsorption and decomposition.

The invention provides an in-situ thermal treatment, gas phase extraction and permeable reaction wall combined device for remediating organic polluted soil. The device comprises an in-situ thermal assembly, a gas phase extraction assembly and a permeable reaction wall assembly, wherein the in-situ thermal assembly comprises a plurality of electromagnetic heating assemblies which can be drilled ina polluted soil area; the gas phase extraction assembly comprises a gas collecting cover which covers the polluted soil area; a gas pipeline is connected to a vacuum pump, and the vacuum pump is connected to an organic substance treatment device; the permeable reaction wall assembly comprises a plurality of cylindrical reaction columns and insulation walls which are arranged in the soil pollutingsubstance moving direction. According to the device, the in-situ thermal assembly, the gas extraction assembly and the permeable reaction wall are integrated for comprehensively treating in the organic polluted soil area, so that organic pollutants can be prevented from further transferring in the soil; the pollution range can be effectively controlled; the convenience of maintenance is ensured; secondary pollution is avoided; the reaction prospect is good; and the device can work normally in the polluted soil for a long time.