39results about How to "High adsorption removal rate" patented technology

The invention discloses a preparing method of a manganese oxide-charcoal composite adsorbent, which comprises following steps: (1) air-drying or drying a biomass raw material, pulverizing into powder and uniformly mixing for standby; (2) taking potassium permanganate or sodium permanganate as a pre-treating agent, and performing pretreatment on the biomass raw material by adopting an equivalent-volume impregnation method; (3) drying, pyrolyzing and carbonizing the pretreated material to prepare the composite adsorbent material; (4) soaking the obtained composite adsorbent material with inorganic acid, and washing and drying to obtain the manganese oxide-charcoal composite adsorbent finished product. The method is simple, the prepared composite adsorbent is suitable for an adsorption method as an adsorbent for treating heavy metal ion-containing waste water, and has an advantage in the aspect of treating the acid heavy metal ion waste water particularly. The adsorbent can also serve as a conditioner for soil polluted by heavy metal ions, and achieves an action of controlling the absorption of plants to heavy metal ions by adsorbing the heavy ion ions after being applied into the soil.

The invention provides a riverway channel water quality biologically-intensifying device and application thereof, belonging to the field of water treatment. The riverway channel water quality biologically-intensifying device comprises a transferring shaft and a filler area, wherein with the transferring shaft is positioned in the center of the riverway channel water quality biologically-intensifying device; the filler area encloses the transferring shaft. The riverway channel water quality biologically-intensifying device is characterized in that an upper fixed plate (3), a lower fixed plate and the transferring shaft (1) are integrated into a whole by taking the transferring shaft (1) as a center; an impeller (5) is fixed on the lower fixed plate; the filler area (4) is divided into fourregions through a grating sieve mesh (6), and biological fillers are filled in the regions. The integral riverway channel water quality biologically-intensifying device is driven to move by taking water flows as a driving force when being applied to the treatment of riverway channel water bodies, prevents the fillers from washing away by combining the fixed biological fillers with suspension fillers, can achieve the effective elimination and the synchrous denitrification of COD (Chemical Oxygen Demand), achieves the moving bed effect and also greatly enhances the mass transfer rate of nutrient substances and dissolved oxygen; and in addition, the riverway channel water quality biologically-intensifying device can carry out the treatment aiming at the pollution conditions of different water layers of riverway channels and also has the advantages of energy saving, environmental protection, low acquisition cost and operation cost, and the like.

The invention relates to the field of sewage treatment, in particular to zeolite synthesized from fly ash and a method for treating high-concentration ammonia-nitrogen wastewater by zeolite. The preparation method of zeolite comprises the step of pretreatment, that is, fly ash is washed and pickled sequentially, and washed-pickled fly ash is obtained; particularly, during washing, the fly ash is evenly mixed with pure water and stirred at 15-30 DEG C for 48 h, and washed fly ash is obtained by solid-liquid separation; during pickling, the washed fly ash and a 2 mol / L HCl solution are mixed ina volume ratio of 1:9, the mixture is stirred at 80 DEG C for 1 h, then solid-liquid separation, washing with water, washing with alcohol and drying are performed, and the washed-pickled fly ash is obtained. Zeolite is pretreated by pickling and water washing pretreatment, so that the ammonia-nitrogen removal rate of zeolite is higher than that of zeolite pretreated by pickling only, and is much higher than that of zeolite pretreated by water washing only; compared with direct pickling, the consumption of hydrochloric acid is reduced by 18.18% and the preparation cost is reduced.

The invention provides a magnetic microsphere capable of adsorbing diclofenac sodium. The magnetic microsphere is prepared by the following steps: preparing nano Fe3O4 by a co-precipitation method, preparing a SiO2 coated magnetic nano particle Fe3O4@SiO2, preparing a chitosan compounded Fe3O4@SiO2 magnetic material, and preparing an ethylene diamine modified magnetic material. According to the preparation method, chitosan and magnetic particles are combined, then the microsphere is modified by ethylene diamine; the magnetic microsphere has more amino groups, the effect of adsorbing and removing diclofenac sodium in water is improved, moreover, the chitosan microsphere has a good magnetic responding performance, so the microsphere can be conveniently separated and recovered, and the magnetic microsphere is a green and sustainable absorbent.

The application provides a removal device and a removal method for volatile organic compounds in industrial waste gas, wherein the removal method mainly includes five steps: pretreatment of waste gas, adsorption by high-silicon molecular sieve, oxidization by ozone, discharge of waste liquid, and discharge of purified gas. The removal method has reasonable design, simple process and convenient operation and can completely remove the volatile organic compounds.

The invention provides a method for preparing a mesoporous silicon adsorption material with high specific surface area, and relates to a method for preparing an adsorption material. The method solves the problems of poor adsorptivity, low stability and high price existing in the prior adsorption material. The preparation method comprises: 1, dropwise adding a solution of sodium silicate to an acidified solution of cetylpyridinium chloride, and magnetically stirring the mixed solution to prepare a precipitate; and 2, washing, drying and calcining the precipitate to obtain the mesoporous silicon adsorption material with high specific surface area. In the method, the mesoporous silicon material is orderly synthesized under the acidic condition. The product obtained by the method has the advantages of good adsorptivity, high stability, large specific surface area, low price of raw materials, simple process and simple equipment.

The invention discloses a novel and high-efficiency composite adsorption material prepared by loading lotus root starch on mullite fibers, and relates to the field of water treatment. The invention also discloses a method for removing permanganate acid radicals from water by using the mullite fibers loaded with the lotus root starch. By the method, the permanganate acid radicals in the water can be adsorbed and removed by the mullite fibers loaded with the lotus root starch under the conditions of optional pH values. An adsorption method is adopted; and compared with the traditional adsorption material, the composite adsorption material is low in cost and suitable for treating high-concentration wastewater. Besides, the composite adsorption material has the characteristics of large specific surface area, high adsorption efficiency, readily available materials, high-temperature resistance, high recycling rate and the like. Therefore, good environmental and economic benefits can be achieved when the permanganate acid radicals in the wastewater are removed by the composite adsorption material.

The invention relates to the field of deep disposal process for biochemical tail water of the chemical industry, in particular to a deep disposal process for biochemical tail water of the chemical industry. A disposal system includes a pH adjusting pool, a PAC reactor and a membrane separating device which are connected sequentially. Under aeration condition, through the double function of PAC adsorption and micro-biological degradation, removal of refractory organics in the biochemical tail water of the chemical industry is achieved, and fast regeneration and recycling of PAC are achieved byusing dominant bacterial groups to degrade pollutants; the regeneration period is short, the load impact resisting capability is great, operation management is convenient, the running expense is low,and meanwhile a certain detoxification function is achieved; the sludge settling performance is excellent, basically no residual sludge is generated, and discharged water can reach the first-level A emission standard of the pollutant emission standard for urban sewage treatment plants (GB18918-2002).

The invention discloses a mesoporous carbon material loading zero-valent iron, a preparation method and application thereof. The preparation method comprises the following steps: drying and carbonizing a starch water solution containing colloidal silicon dioxide, so as to obtain a mesoporous carbon material, adding a solution containing ferric iron into the mesoporous carbon material in non-oxidizing atmosphere, and performing reduction with sodium borohydride, so as to obtain the mesoporous carbon material loading zero-valent iron; the specific surface area, mean pore size and pore volume ofthe mesoporous carbon material are 100 to 400m2 / g, 5 to 10nm and 0.5 to 1.0cm3 / g separately; the adsorption removal rate hexavalent chromium ion in a water body can reaches greater than 99 percent. The method can realize the controllable synthesis of different specifications of mesoporous carbon materials loading zero-valent iron by adjusting technical parameters; the mesoporous carbon material ishigh in metallic iron load rate, and high in stability, adsorption efficiency and adsorption capacity; the preparation condition is mild, the technology is simple and controllable, and the efficiencyis high, the method is suitable for scale production and wide in application.

The invention belongs to the technical field of environmental materials, and discloses a method for improving adsorption performance of ceramsite, modified ceramsite and application of the modified ceramsite. The method comprises the following steps: in a solution containing organic matters, reducing ferric iron in an iron-rich matrix into ferrous iron by adopting dissimilatory iron reducing bacteria to obtain ferrous water; and introducing the ferrous water and a solution rich in nitrate nitrogen into ceramsite inoculated with ferrous oxidation denitrifying bacteria, and carrying out oxidation treatment to obtain the modified ceramsite. The method is simple, low in energy consumption and low in cost; the adsorption removal rate of the modified ceramsite on pollutants such as phosphorus and cadmium can reach 90% or above and is far higher than that of unreinforced original ceramsite, and the modified ceramsite is relatively rapid and stable in adsorption effect and not prone to desorption. The modified ceramsite is used for removing phosphorus-containing inorganic matters and / or cadmium-containing heavy metals in sewage.

The invention relates to a red mud modification method, a modified product and its application in absorbing brilliant blue dye, and the red mud modification method, the steps of which include pretreatment and LDO synthesis. The beneficial effects of the present invention are: by reusing the red mud, an LDO adsorbent with a larger specific surface area and capable of accommodating a large amount of anionic dyes is prepared, the preparation process requires less additional materials, the process is simple, and the success rate is high. And LDO has a high adsorption and removal rate for simulated wastewater. For 50mg / L brilliant blue dye simulated wastewater, the removal rate of 0.1gLDO can reach more than 98%, which is far higher than the highest removal rate of red mud38 %, 22% of roasted red mud and 89% of LDH; especially for 400mg / L simulated wastewater, the highest adsorption capacity of LDO can reach 170mg / g, which has a high use value.

The invention relates to the field of biological enzyme deodorants, in particular to a composite biological enzyme deodorant and a preparation method thereof. The composite biological enzyme deodorantcomprises a solid component, wherein the solid component comprises the following components in parts by weight: 5-12 parts of a composite bio-enzyme preparation and 30-50 parts of modified blast furnace slag. The composite biological enzyme deodorant also comprises a liquid component, wherein the liquid component comprises the following components in parts by weight: 0.1-0.5 part of sodium ligninsulfonate, 0.05-0.2 part of polydimethyldiallylammonium chloride and 40-80 parts of deionized water. By combining the existing physical deodorization, chemical deodorization and microbial deodorization methods, the physical, chemical and microbial three-in-one composite biological enzyme deodorant is prepared.

The invention discloses a composite adsorbing material prepared by loading rice husk powder on a carbon nanometer tube and belongs to the field of water purification. The invention also discloses a method for removing copper ions in water by utilizing the carbon nanometer tube with loaded rice husk powder, namely adsorbing the carbon nanometer tube with the loaded rice husk powder at any pH value for removing the copper ions in the water. An adsorbing method is adopted for removing the copper ions in the water, but the service life and recycling are obviously superior to that of conventional adsorbing materials. In addition, the method is simple to operate, and the composite adsorbing material has the advantages of easily available materials, low cost and high adsorbing quantity. The composite adsorbing material has high efficiency for treating natural water with the ionic concentration of 1-100mg / g. In such a way, the composite adsorbing material is used for removing the copper ions in the natural water and has good economic and environment benefits.

The invention discloses an artificial island for riverway water quality purification and ecological restoration, and relates to the technical field of ecological management, and the artificial island is composed of a suspended filler area located in the center of an artificial island body and a near-natural structure area surrounding the suspended filler area. The suspended filler area can adsorb and remove heavy metals such as Cr, Pb and Cd in urban river water, and pollutants such as COD, N and P in the water can be effectively reduced. A good river hygrophilous and terrestrial ecological environment is built in the area close to the natural structure, and an environment space meeting habitat and reproduction of organisms such as amphibians, reptiles, insects and birds and growth of shrubs and small arbors is built. The natural stone layer serving as a hard framework of the artificial island is provided with a large number of holes, a place for avoiding natural enemies is provided for small fishes, small mollusks and juvenile fishes, and the number of urban river organism populations can be increased.

The invention belongs to the technical field of water treatment, and relates to MgO-loaded activated carbon as well as a preparation method and application thereof. The preparation method of the MgO-loaded activated carbon comprises the following steps: (a) impregnating activated carbon with the water content of less than or equal to 1% in a strong oxidant solution, carrying out solid-liquid separation on an obtained impregnated product, and washing and drying an obtained solid product to obtain pre-oxidized activated carbon; and (b) uniformly mixing the pre-oxidized activated carbon and a magnesium salt solution, dropwise adding a polyethylene glycol solution into the obtained mixture, carrying out vigorous stirring reaction at room temperature of 50 DEG C, carrying out solid-liquid separation on the obtained reaction product, drying the obtained solid product, and calcining at high temperature under the protection of inert gas to obtain the MgO-loaded activated carbon. The MgO-loaded activated carbon obtained by the method provided by the invention can more quickly and effectively adsorb boron ions in seawater and / or boron industrial sewage so as to obtain desalinated water with boron content meeting the standard, and meanwhile, the environmental problem is greatly solved.

The invention provides a high-efficiency high-temperature activated carbon adsorbent. Raw materials of the adsorbent comprise activated carbon and lipase liquid, wherein the mass ratio of the activated carbon to the lipase liquid is 1:(10-20); and the lipase liquid is lipase liquid secreted during mixed fermentation culture of pseudomonas putida, pseudomonas fluorescens and denitrifying bacteria.According to the adsorbent disclosed by the invention, the adopted lipase liquid is the lipase liquid secreted by mixed fermentation of the pseudomonas putida, pseudomonas fluorescens and denitrifyingbacteria on a culture medium added with industrial wastewater. The lipase liquid can adapt to an environment of the industrial wastewater in the culture medium, is applicable to high-temperature conditions, can still maintain extremely high activity under the high-temperature conditions, and has stability. The lipase liquid has excellent adsorption effects on heavy metal ions and organic matters.The activated carbon adsorbent prepared by performing synergistic matching on the lipase liquid with the characteristics and the activated carbon has excellent high temperature resistance.

Belonging to the field of environmental protection, the invention in particular relates to a multi-level structure calcite, a preparation method and application thereof. The multi-level structure calcite provided by the invention is formed by calcination of the precipitate obtained by microwave reflux reaction of urea and a soluble organic calcium salt in a solvent. The method provided by the invention takes the soluble organic calcium salt and urea as the reactants, and utilizes the microwave reflux-calcination two-step process to prepare the multi-level structure calcite with large specificsurface area and abundant pore channels. The multi-level structure calcite provided by the invention has the characteristics of no toxicity, environmental friendliness, cheap raw materials, and simpleand fast preparation process. The multi-level structure calcite has large adsorption capacity and good structural stability, can show a high adsorption removal rate on nano-silver in a wide pH range,and is not interfered by impurity ions. In addition, the multi-level structure calcite adsorbing nano-silver also has good catalytic performance, and can be used as a catalyst, thus providing a new way for the sustainable application of recovered nano-silver.

A method, device and application for preparing modified activated carbon by two-stage reduction pyrolysis of organic solid waste. The system includes a two-stage pyrolysis device, a gas supply system, a high-temperature gas purification device, a cooling device, a gas storage device, and an oil storage device. Organic solid waste is pyrolyzed in an atmosphere of inert gas and reducing gas to obtain pyrolysis gas, pyrolysis oil and modified pyrolysis coke. The specific surface area of ​​the modified thermal coke is significantly increased, with high activity and strong adsorption. Activated carbon black is obtained after catalytic reforming of upper-stage pyrolysis volatiles by modified thermal coke, which provides an excellent precursor for the preparation of activated carbon. Activated carbon black is obtained through acid-base activation, carbonization and other processes to obtain high-quality modified activated carbon. The modified activated carbon prepared by the invention has a high rate of adsorption and removal of heavy metal pollutants such as nickel and cadmium in water. The invention not only solves the pollution problem of organic solid waste, but also provides a way for resource utilization of organic solid waste.

The invention relates to a preparation method of a pig manure biogas residue adsorbent, a pig manure biogas residue adsorbent and a method for rapidly removing doxycycline in water bodies, belonging to the technical field of environmental treatment. The preparation method of the present invention comprises mixing pig manure biogas residue and potassium permanganate aqueous solution, ultrasonic treatment, to obtain biomass-KMnO 4 mixture, dried to obtain dried biomass‑KMnO 4 mixture; the dried biomass-KMnO 4 The mixture is fired to obtain the pig manure and biogas residue adsorbent loaded with potassium permanganate. The method of the invention is efficient, fast, economical and environment-friendly, and the purpose of efficiently, rapidly, economically and environment-friendly removing the doxycycline in the water body is achieved by loading biochar with potassium permanganate.

The invention relates to sludge particles for removing a heavy metal and a preparation method and application thereof. A sludge particle adsorbent is prepared by mixing sludge of a water supply plantand clay with water, forming spherical particles, drying and firing. The dry weight ratio of the sludge of the water supply plant to the clay is (1:1)-(1:4). It is found that when the dry weight ratioof the sludge of the water supply plant and the clay is within the above range, the obtained sludge particle adsorbent is better balanced in the three aspects of aluminum release amount, loss rate and heavy metal removal rate. The method prepares the novel sludge particles by using the sludge of the water supply plant and the clay as raw materials, can effectively remove heavy metal pollution ofa water body, has low aluminum ion release amount and high strength, is not easily dispersed, and has the advantages of energy saving, economic performance and high efficiency.

The invention relates to a preparation method of a pig manure biogas residue adsorbent, the pig manure biogas residue adsorbent and a method for rapidly removing doxycycline in a water body, and belongs to the technical field of environmental treatment. The preparation method comprises the following steps: mixing pig manure biogas residues and a potassium permanganate aqueous solution, carrying out ultrasonic treatment to obtain a biomass-KMnO4 mixture, and drying the mixture to obtain a dried biomass-KMnO4 mixture; and firing the dried biomass-KMnO4 mixture to obtain a potassium permanganate loaded pig manure biogas residue adsorbent. The method disclosed by the invention is efficient, rapid, economical and environment-friendly, and the purpose of efficiently, rapidly, economically and environmentally removing doxycycline in a water body is achieved through potassium permanganate loaded biogas residue biochar.

The invention relates to the technical field of industrial wastewater treatment, and discloses a modified biological activated carbon adsorbent for removing Cr (VI). The adsorbent is prepared from the following raw materials in parts by weight: 1-3 parts of AlCl3, 2-6 parts of MgCl2, 25-30 parts of clean and dry coconut shell and a NaOH saturated solution. The invention further provides a preparation method and device of the modified biological activated carbon adsorbent for removing Cr (VI), and in addition, the invention further provides application of the modified biological activated carbon adsorbent for adsorbing and removing Cr (VI) in wastewater. The preparation process of the modified biological activated carbon adsorbent is simplified, and the modified biological activated carbon adsorbent has higher adsorption capacity on Cr (VI) in wastewater, is large in adsorption capacity, short in adsorption time, low in raw material cost and better in regeneration performance and has better adsorption performance and separation performance.

The invention discloses a preparation method of a pulverized fuel ash / oxidized grapheme composite adsorbing material, and belongs to the technical field of environmental protection materials. The preparation method comprises the following special steps: adding a chitosan solution with the mass concentration being 1-5% in pulverized fuel ash according to the ratio of 1 g of pulverized fuel ash to 1 ml of chitosan solution for impregnating for 2-3 h, then drying for 2-3 h at 50-80 DEG C, next adding an oxidized grapheme solution according to the ratio of 1 g of pulverized fuel ash to 10-20 ml of oxidized grapheme with the concentration being 2-5 g / L for impregnating for 8-12 h, stirring for 2-3 h at the same time, adding glutaraldehyde according to the ratio of 1 g of pulverized fuel ash to 0.5-2 ml of glutaraldehyde for crosslinking for 3 h at 50-80 DEG C in the process of adding water to dilute till the solid concentration is 40 g / L, filtering out a liquid phase and washing with absolute ethyl alcohol to be neutral, and performing vacuum drying for 5-6 h at 60 DEG C to obtain the pulverized fuel ash / oxidized grapheme composite adsorbing material. The pulverized fuel ash / oxidized grapheme composite adsorbing material, prepared through the preparation method, overcomes the defect that oxidized grapheme is difficult to separate, and can adsorb anionic-cationic dyes and various pollutants synchronously.

The invention relates to nano-porous copper oxide and a preparation method and application thereof in garbage stink. The preparation method comprises the following steps: stirring an organic copper salt and an aromatic solvent at 60-80 DEG C, mixing to form a first mixed solution, uniformly mixing organic alcohol and water to form a second mixed solution, adding the second mixed solution into thefirst mixed solution, heating to react while stirring, and drying by distillation to obtain a precursor, wherein the aromatic solvent is at least one of benzene, methylbenzene, dimethylbenzene and ethylbenzene, and calcining the precursor to obtain the nano-porous copper oxide. The nano-porous copper oxide prepared by the method disclosed by the invention has certain lipophilicity and has a relatively good adsorption removal effect on sulfur-containing organic compounds when being applied to garbage odor, and the adsorption removal rate reaches 95% or above.

The invention discloses a method for reducing the content of phenylalanine in a product, and belongs to the field of food processing. Protein-containing products are used as raw materials, hydrolysate obtained through enzymolysis is adsorbed through macroporous resin, and the removal rate of phenylalanine in the protein hydrolysate after adsorption through macroporous non-polar adsorption resin can reach 15%-90% by adjusting the adsorption temperature, the pH value of adsorption liquid and the adsorption time. The resin adsorption specificity is high, the removal rate of phenylalanine in the obtained product is high, the defects that the adsorption range of traditional activated carbon is wide, nutrient substances are lost and the like are overcome through resin adsorption, the operation process is simple and convenient, and the method is suitable for industrial production; and the method has the potential of being used for preparing special medical purpose formula food or health care products for patients suffering from phenylketonuria and the like.

The present invention relates to the treating process of effluent containing toluidine. In the conditions of 0-40 deg.c temperature and 0.5-8 BV / hr flow rate, effluent containing toluidine is made to pass through treater filled with double function resin of R-NH2, where R is divinyl benzene cross-linked styrene copolymer, and the resin has specific surface area not smaller than 700 sq m / g and exchange capacity not smaller than 0.5 mmol / g. The adsorption saturated double function resin is desorbed with dilute hydrochloric acid solution to regenerate, and the desorbed high concentration toluidine solution is treated through alkali regulation, rectification and other steps to recover toluidine product. The present invention has toluidine recovering rate higher than 80 % and recovered toluidine purity higher than 99 %. The present invention realizes the recovery of toluidine in effluent and the treating process is simple, efficient and economic.

The invention discloses a chitosan / gamma-AlOOH composite thin film for absorbing Pb(II) in water and a preparation method and an application thereof. The method comprises the following steps: firstly,preparing gamma-AlOOH sol, mixing with chitosan sol and then adding glutaraldehyde to cross-link it; finally, casting and forming the composite sol and drying to obtain the chitosan / gamma-AlOOH composite thin film. Compared with single gamma-AlOOH thin film and chitosan film, the chitosan / gamma-AlOOH composite thin film has higher adsorption capacity, higher adsorption rate and stronger acid resistance to Pb (II) in water, the adsorption capacity on 10 mg / L Pb (II) is 9.67 mg / g, and the removal rate was 96.75%. The residual concentration of Pb (II) in water could be reduced to 0.33 mg / L, which met the national discharge standard of Pb (II) in industrial wastewater.

The invention provides a sewage treatment system and method for strengthening fast transfer of organic matters. The system comprises a sludge pretreatment basin, an adsorption-condensation basin, a sedimentation tank and a regeneration tank. The method includes: putting sludge in the sludge pretreatment basin, generating high shear force through fast stirring, and exposing close bond type extracellular polymeric substances with higher aggregation performance in the inner layer of sludge floc; feeding the pretreated sludge into the adsorption-condensation basin, and fully mixing the sludge with sewage under slow agitation to enable the sludge to quickly adsorb organic matters in the sewage and aggregate together again to form sludge floc; feeding mixed liquid containing the sludge floc into the sedimentation tank to stay, enabling supernatant to flow out via a water outlet, feeding part of settled sludge into the regeneration tank via a sludge pump, and discharging the excess sludge to serve as recyclable materials; subjecting the sludge in the regeneration tank to aerobiotic regeneration under the aeration condition, and feeding the sludge into the sludge pretreatment basin through a sludge reflux pump. Compared with the traditional adsorption-regeneration process, the system and method has the advantages that pollutant adsorption and removal rate of the process can be increased by 20-30%, process energy consumption can be lowered by 30-60%, and organic content of the excess sludge is increased by 10-20%.

The invention belongs to the technical field of waste gas treatment, and particularly relates to a waste gas treatment device and method for recovering epoxy chlorohydrocarbon. In order to solve the technical problems that an existing epoxy chlorohydrocarbon waste gas treatment device is low in epoxy chlorohydrocarbon recovery rate and the content of epoxy chlorohydrocarbon in purified gas is prone to exceeding the standard, a water removal unit is added on the basis of an existing device, it is guaranteed that epoxy chlorohydrocarbon does not make contact with water vapor, a hydrolysis reaction is avoided, the recovery efficiency of epoxy chlorohydrocarbon is guaranteed, and the recovery efficiency of epoxy chlorohydrocarbon is improved. Meanwhile, three-tank adsorption and two-tank standby are adopted, so that two clean adsorption tanks are always available in the adsorption process; in addition, two condensation systems are arranged, so that the condensation efficiency can be improved to the maximum extent, the organic matter transfer efficiency is improved, and the requirements of waste gas purification and emission are met.