71results about How to "Improve carbon sequestration efficiency" patented technology

The invention discloses a dispersion optical-fiber type photo-bioreactor with an inserted spiral band. The photo-bioreactor comprises a top cover, an outer pipe, an inner pipe and a bottom cover. The outer pipe, the top cover and the bottom cover are provided with through holes, and the outer pipe wall is provided with a liquid inlet and a liquid outlet; and the top cover is arranged at the top of the outer pipe, and the bottom cover is arranged at the bottom of the outer pipe. The dispersion optical-fiber type photo-bioreactor is characterized in that a step is arranged at the top of the inner pipe which penetrates through the through hole of the top cover to be inserted into the through hole of the outer pipe and is limited by the step arranged at the top of the inner pipe; the spiral band which is arranged between the outer pipe and the inner pipe and encircled on the inner pipe enables a spiral upward channel to be formed in a microalgae culturing area between the inner pipe and the outer pipe; a sand core funnel is arranged in the through hole of the outer pipe below the bottom of the inner pipe, the lower portion of the sand core funnel penetrates through the through hole of the bottom cover, and a seal plug is sleeved on the lower portion of the sand core funnel and fixed in the through hole of the bottom cover; and an optical fiber core is inserted in the inner pipe.

The invention relates to the technical field of biological metabolism engineering, particularly a metabolism and signal pathway of a microalga growth regulator, and a verification method and application thereof. A metabolomic means is utilized to verify microalga hormones, and a functional genomic means is utilized to explain the metabolism channel, signal transmission pathway and regulation network of the microalga hormones; a transcriptomic means is utilized to verify key enzymes and proteins related to hormone metabolism and signal transmission in the microalga stress tolerance and oil synthesis process; and metabolism engineering and chemical engineering means are utilized to regulate the hormone metabolism and signal pathway, thereby optimizing the physiological characters of the algae and plants. The invention provides a method for verifying microalga hormones and metabolism pathway / signal pathway thereof. The method can explain the hormone metabolism enzymes and signal proteins closely related to physiology of algae as well as related regulation mechanism, and is used for improving the agronomic characters of organisms.

The invention discloses a stand structure regulation and control method for improving the carbon sequestration capability of a masson pine forest, and the method comprises the steps: (1), selecting a sample land, determining the name of trees planted on the sample land, measuring the breast diameter and height of a single tree on the sample land, and recording the coordinates of the position of the single tree through an adjacent grid method; (2), calculating the stand structure indexes of the sample land according to the name of trees, the breast diameter, the tree height and the position coordinate data: a crown overlapping index, a health degree index, a mingling index, a stand ratio, a uniform angle index and a diameter class distribution q value, and calculating a cutting decision index; (3), determining a stand structure regulation and control mode to regulate and control the stand structure according to the stand structure indexes and the investigation factors of the sample land. The method can promote the construction of a high-efficiency forest land production system through the regulation and control of the stand structure, and also can promote the construction of a benign-cycle ecosystem. After regulation and control, compared with the fixed carbon content of a reference forest stand, the fixed carbon content of a forest stand in a unit area is improved by 10%-25%, and the forest stand has the remarkable economic benefits and ecological benefits, and is very good in application prospect.

The invention discloses a method used for preparing grease via microalgae mixed cultivation. The method comprises following steps: 1, a microalgae culture medium and a Scenedesmus obliqnus FSH-Y2 seed solution are delivered into a photobioreactor, pH value of an obtained culture system is adjusted to be 10 to 12, CO2 content of added gas is controlled to be lower than 5v%, and culturing is carried out for 2 to 5 days; 2, pH value of the culture system is adjusted to be 8 to 10, an Ankistrodesmus sp. SS-B7 seed solution is added for mixed cultivation, and CO2 content of added gas is controlled to be 5 to 45v%; 3, culturing is carried out until stationary growth stage is over, and microalgae cells are harvested. The Scenedesmus obliqnus FSH-Y2 and the Ankistrodesmus sp. SS-B7 are stored in China General Microbiological Culture Collection Center on 11th September 2012 and 15th April 2013 respectively, and preservation number is CGMCC No. 6551 and CGMCC No.7478. The method is capable of increasing tolerance of the microalgae culture system on CO2, and solubleness, and increasing carbon sequestration efficiency; microalgae grease yield is increased obviously; and the method can be used for biodiesel production.

The invention relates to a comprehensive treatment method and device for flue gas. The method comprises the following steps: introducing flue gas into a desulfurization reactor, and treating the fluegas by virtue of oil refining alkali residue as an absorbent, so as to obtain desulfurized flue gas and desulfurized waste liquid; carrying out causticization regeneration on the desulfurized waste liquid so as to obtain precipitates, carrying out high-temperature calcination, and reacting by virtue of obtained high-concentration SO2 and the desulfurized flue gas so as to prepare sulfur; removingorganic sulfide and VOCs from produced gas, introducing the produced gas into photobioreactor for microalga culture, and collecting discharged gas; carrying out solid-liquid separation on a culture system, so as to respectively collect microalga cells and filtrate; adding sodium peroxide into the filtrate, introducing the discharged gas into the filtrate for reaction, so as to obtain purified gas;and carrying out denitrification on the filtrate after oxidation. According to the comprehensive treatment method, flue gas containing SO2, CO2 and NOX is treated through the coupling of nitric aciddesulfurization and microalga culture, so that the efficient treatment of the flue gas is realized; and the comprehensive treatment method and device for flue gas have the advantages of good removal effect, low treatment cost, economy, environment friendliness and the like.

The invention discloses a method for preparing microalgae oil. The method comprises the following steps: adding a microalgae culture medium and a mixed microalgae seed solution to a photobioreactor, keeping the pH value of a culture system to be 8-12 and introducing gas which contains 5-45v% of CO2 by volume, wherein the mixed microalgae includes scenedesmus obliqnus FSH-Y2 and monoraphidium sp SS-B1 which are preserved in China General Microbiological Culture Collection Center on September 11, 2012 and April 15, 2013 by preservation numbers of CGMCC No.6551 and CGMCC No.7479, respectively. By virtue of the method disclosed by the invention, the solubility and the tolerance of the microalgae culture system to the high-concentration CO2 are improved, a carbon sequestration efficiency is improved and the yield of the microalgae oil is obviously improved, and the obtained microalgae oil can be used for producing biodiesel.

The invention discloses a method for producing microalgae oil. The method comprises the following steps: adding a microalgae culture medium and a mixed microalgae seed solution to a photobioreactor, keeping the pH value of a culture system to be 8-12 and introducing gas which contains 5-45v% of CO2 by volume, wherein the mixed microalgae includes scenedesmus obliqnus FSH-Y2 and ankistrodesmus sp. SS-B7 which are preserved in China General Microbiological Culture Collection Center on September 11, 2012 and April 15, 2013 by preservation numbers of CGMCC No.6551 and CGMCC No.7478, respectively. By virtue of the method disclosed by the invention, the solubility and the tolerance of the microalgae culture system to the high-concentration CO2 are improved, a carbon sequestration efficiency is improved and the yield of the microalgae oil is obviously improved, and the obtained microalgae oil can be used for producing biodiesel.

The invention provides a method of taking microalgae as a raw material to prepare 5-hydroxymethyl furfural. The method includes the following steps: taking microalgae as the raw material; allowing hydrolysis dehydration under action of reaction solvent and solid acid catalyst to generate 5-hydroxymethyl furfural. 5-hydroxymethyl furfural which is a platform compound and has high added value is obtained by utilizing microalgae which is an environment-friendly renewable biomass resource, so that efficient biological fixation and catalytic conversion of CO2 through microalgae are realized, hydrolysis dehydration is mild in condition, process is simple, the raw material is high in conversion rate and high in selectivity to 5-hydroxymethyl furfural which is a target product, and the catalyst is renewable and reusable after simple solid-liquid separation.

The invention discloses a method for producing lipid through mixed culture of microalgae. The method comprises the following steps: (1) adding a microalgae medium and a parachlorella kessleri FSH-Y3 seed solution to a photobioreactor, regulating pH value of a culture system to 10-12, supplying gas that a CO2 content is 1-5v%, and conducting culture for 2-5 days; (2) regulating the pH value of the culture system to 7-10, inoculating the culture system with desmodesmus sp. MH-04 and / or monoraphidium sp. SS-B1 seed solutions / seed solution and implementing mixed culture, and supplying gas that a CO2 content is 5-45v%; and (3) conducting the culture until the end of a stationary growth phase, and collecting microalgae cells. According to the method provided by the invention, the tolerance and the solubility of the microalgae culture system to high-concentration CO2 are improved, a carbon fixation efficiency is improved and the yield of the microalgae lipid is obviously improved; and the method is applicable to the production of biodiesel.

The invention discloses a method for fixing light calcium carbonate as CO2 byproduct by using humate and desulfurization gypsum. The method comprises the following steps of mixing desulfurization gypsum and humate as raw materials with water and stirring to obtain a liquid mixture A of desulfurization gypsum and humate; adding the mixture A into an absorption reaction device, introducing CO2, and reacting to form an absorption liquid mixture B containing calcium carbonate and humic acid precipitates; filtering the absorption liquid mixture B to obtain a mixture C of calcium carbonate and humic acid precipitates and a filtrate D, and heating the filtrate D for evaporation to obtain sodium sulfate; adding a NaOH solution into the mixture C of calcium carbonate and humic acid precipitates to obtain a mixture E, and adjusting the pH of the mixture E to allow the formation of soluble sodium humate from humic acid and maintain calcium carbonate precipitates; filtering and drying to obtain a byproduct of light calcium carbonate; and adding desulfurization gypsum into the filtrate G to form an absorption liquid M, and returning to the step b and absorbing and recycling CO2. The method can recycle the absorption liquid, increase the carbon sequestration efficiency, provide the byproduct of light calcium carbonate and achieve the purpose of treating waste with waste and recycling solid waste. Besides, the used devices are simple and low in cost.

The invention discloses a method for producing lipid through mixed culture of microalgae. The method comprises the following steps: (1) adding a microalgae culture medium and scenedesmus obliqnus FSH-Y2 seed solution into a photo-biological reactor, and culturing for 2-5 days, wherein the pH value of a culture system is regulated to be 10-12, and the content of CO2 in the introduced gas is controlled to be 5v% or below; (2) adjusting the pH of the culture system to be 8-10, and inoculating with monoraphidium sp SS-B1 seed solution for mixed culture, wherein the content of CO2 in the introduced gas is 5v%-45v%; and (3) culturing till the stationary growth stage is finished, and harvesting microalgae cells, wherein scenedesmus obliqnus FSH-Y2 is preserved in the China General Microbiological Culture Collection Center (CGMCC) on September 11, 2012, and has the preservation number CGMCC No.6551, and monoraphidium sp SS-B1 is preserved in the China General Microbiological Culture Collection Center (CGMCC) on April 15, 2013, and has the preservation number CGMCC No.7479. With the adoption of the method, the tolerance and solubility of the microalgae culture system to high-concentration CO2 are improved, the carbon sequestration efficiency is improved, the harvest yield of the microalgae lipid is obviously improved, and the production of biodiesel is realized.

The invention provides an economic and efficient spirulina platensis mixed culture method, belonging to the technical field of microalga biology. During the growth process of spirulina platensis, the illumination intensity is controlled in stages, and glucose is fed as a heterotrophic carbon source, so that the technical problems that the spirulina platensis is limited by light intensity, concentration of an organic carbon source and the like during the culture process are solved, an optimal feeding way with most appropriate light intensity and carbon source in the mixed culture process is found, and high-efficient carbon fixation and fast growth of the spirulina platensis are realized.

The invention relates to the field of microorganism fixing of CO2, and in particular relates to a method for improving carbon fixing efficiency of non-photosynthesizing microorganisms in an oxygen deficient condition. The method comprises the following steps: (1) preparing a culture medium for culturing autotrophic microorganisms, and adding trace element solution in the culture medium; (2) preparing an electron donor concentrate; (3) adding the electron donor concentrate prepared in the step (2) into the trace element containing culture solution prepared in the step (1); and (4) adding hybrid carbon-fixing strains from oceans into the culture medium prepared in the step (3). According to the method, the carbon-fixing efficiency of the non-photosynthesizing microorganisms can be effectively increased. The method has the advantages of simple process, strong operability and certain economic benefit.

The invention relates to a method for mineralizing and fixing CO2 by using strengthened steel slag. By using a large amount of steel slag which is generated in the production process of the steel industry and is difficult to treat as a raw material and adding an alkali-containing metal salt catalyst, a calcium oxide component in strengthened steel slag reacts with CO2, thereby improving the conversion rate of the calcium oxide component in the steel slag and the carbon fixing efficiency of the steel slag. In addition, the carbon-fixed steel slag can serve as steel slag micropowder for a concrete admixture, thereby realizing the full-component recycling of the steel slag and increasing the added value of the steel slag. By using the method provided by the invention, the time of CO2 mineralizing and fixing by the steel slag can be obviously shortened, the energy consumption in CO2 mineralizing and fixing by the steel slag can be reduced, and the efficiency of CO2 mineralizing and fixing by the steel slag can be enhanced; and the carbon-fixed steel slag can be used for the production of steel slag micropowder products, thereby further increasing the use value of the steel slag. Thus, the invention has favorable economic benefits and wide industrial application prospects.

The invention relates to the technical field of steel slag pulverization, in particular to a steel slag pulverization and carbon fixation treatment system and application thereof. The steel slag pulverization and carbon fixation treatment system uses high-pressure gas as a cold source and power for molten steel slag pulverization, and realizes the low energy consumption and deep pulverization of steel slag. The particle diameter of the obtained steel slag is less than 2mm. Steel slag powder reacts with carbon dioxide and superheated steam in a fluidized reactor to form stable calcium carbonate. Excess steam and carbon dioxide gas can be recycled as industrial waste heat; the steam becomes water to be separated from the carbon dioxide; and the carbon dioxide is used as make-up gas. The steel slag pulverization and carbon fixation treatment system can realize the rapid cooling, pulverization, and carbon fixation of the molten steel slag, and can fix greenhouse gases while saving energy.

The invention relates to a method for producing microalgae grease by using flue gas, which comprises the following steps: adding a microalgae culture medium, a scenedesmus HY-D3 seed solution and a chlorella SF-B1 seed solution into a photobioreactor, introducing flue gas of which the CO2 volume content is 5-45%, the SO2 volume content is not more than 0.06% and the NOx volume content is not more than 0.08%, culturing for 12-48 hours, and adding a scenedesmus obliquus FSH-Y2 seed solution for mixed culture. According to the method, the tolerance and solubility of a microalgae culture system to high-concentration CO2 are improved, the carbon sequestration efficiency is improved, meanwhile, SOx and NOx in the flue gas can be removed, and the flue gas is purified.

The invention discloses a high-efficiency microalgae light reaction device including a culture tank, a light reactor, a jet device, an aeration device and a fan; a culture tank cover is arranged above the culture tank, the culture tank cover is provided with a gas detection hole; the light reactor, the jet device and the aeration device are arranged in the culture tank, the light reactor is fixedly connected in the culture tank through a bracket, the jet device is symmetrically arranged in the culture tank, the aeration device is arranged at the bottom of the tank culture; a liquid heat conducting medium is arranged in the light reactor; the jet device and the aeration device are driven by a gas supplied by the fan. The device completely abandons the method of water pump plugging, adopts a mode of the fan to realize the stirring effect by using a gas, reduces energy consumption, reduces the motor damage caused by steam, and increases the service life. The liquid heat conducting medium is arranged in the light reactor to effectively improve the heat radiating effect, avoids light failure phenomenon, increases the photosynthesis time, and improves the efficiency of carbon fixation.

The invention relates to a method for treating flue gas containing nitrogen oxides, which comprises the following steps: (1) introducing flue gas into a photobioreactor for microalgae culture, keepingthe pH of a microalgae culture medium not less than 9, then introducing microalgae with high-pH tolerance, and collecting exhaust gas; (2) carrying out solid-liquid separation on the culture system in the step (1), and separately harvesting microalgae cells and a filtrate; and (3) inoculating denitrifying bacteria into the filtrate, and introducing the exhaust gas in the step (1) for denitrification treatment to obtain purified gas. The invention also provides a device for treating the flue gas containing nitrogen oxides. The method and device mainly adopt a biological method to remove CO2 and NOX in the flue gas, do not need to use a catalyst or a large number of chemical reagents, and have the advantages of good removal effect, low treatment cost, economy, environmental protection and the like.

The invention discloses a carbon sequestration and supplementation reactor for gas circulation type microalgae cultivation. The carbon sequestration and supplementation reactor comprises a shell, an inner sleeve, a liquid inlet pipe, a gas inlet pipe, a fixed support and a gas circulation pipeline. The fixing support is installed in the shell, and the bottom end of the fixing support communicateswith the bottom end in the shell. The inner sleeve is fixed at the top end of the fixing support, the inlet end of the liquid inlet pipe extends out of the shell, and the outlet end extends into the inner sleeve; one end of the air inlet pipe communicates with the bottom of the inner sleeve, and the other end communicates with an air supply device; one end of the gas circulation pipeline is communicated with the top end of the shell, and the other end is communicated with the gas supply device. The carbon sequestration and supplementation reactor also comprises a liquid outlet pipeline which is communicated with the bottom end of the shell. According to the carbon sequestration and supplementation reactor, the CO2 is fully dissolved in the liquid, and the carbon sequestration and supplement efficiency is improved.

The invention relates to an oil-producing scenedesmus strain and a culture application thereof, the oil-producing scenedesmus strain is oil-producing scenedesmus TMJ-D3, the classification name of the oil-producing scenedesmus strain is Scenedesmus sp., the oil-producing scenedesmus strain is preserved in China General Microbiological Culture Collection Center on February 5, 2018, and the preservation number of the oil-producing scenedesmus strain is CGMCC No.15299. The oil-producing scenedesmus strain is a strain of oil-producing scenedesmus TMJ-D3. The scenedesmus oleaginus provided by the invention is high in carbon sequestration efficiency and high in grease content, and particularly has the functions of resisting NOx and high temperature at the same time.

The invention relates to a method and device for treating a sulfur-containing flue gas. The method comprises the following steps: introducing flue gas into a desulfurizing reactor to obtain a desulfurized flue gas and a desulfurized waste liquid by adopting an olefin waste alkali liquor as an absorbent; causticizing and regenerating the desulfurized waste liquid to obtain precipitate, calcining ata high temperature to obtain high concentration SO2, and reacting with the desulfurized flue gas to prepare sulfur; introducing the generated gas into a photobioreactor for microalgae cultivation, and collecting an effluent gas; separating solid and liquid from the cultured system to respectively obtain microalgae cells and filtrate; adding sodium peroxide into the filtrate, and introducing the effluent gas into the filtrate to react to obtain a purified gas; oxidizing, and denitrifying the filtrate. The method can be used for efficiently treating a flue gas by treating a flue gas containingSO2, CO2 and NOX with olefin waste alkali liquid treatment and microalgae cultivation coupling treatment, has the advantages of good removing effect, low treatment cost and the like, and economical and environment-friendly.

The invention provides a device for converting microalgae adherent culture and liquid submerged culture, and relates to a device for culturing microalgae. The problem that multiple and repeated conversions between the liquid submerged culture and the adherent culture cannot be achieved at present is mainly solved. The device comprises a concentrator, a communicating pipe, a drip irrigation pipe, a groove plate, a rotatable support and a collecting box. The device for converting the microalgae adherent culture and liquid submerged culture has the advantages that the cost is low, the operation is easy, and the maintenance is easy; the light decay phenomenon which is caused by mutual shielding of algae and exists in submerged culture is solved, and meanwhile the defects that the solubility of CO2 in a water body is lower, and the CO2 absorption efficiency is limited are overcome simultaneously; the conversion between the microalgae adherent culture and liquid submerged culture is achieved, the microalgae high carbon sequestration efficiency is achieved, and rapid and high-density culture is achieved simultaneously; the growth rate of microalgae is effectively improved, the culture cost of the microalgae is reduced, when the microalgae are cultured to reach the maximum biomass, the processes can reappear by placing the microalgae in the concentrator, and the purpose for converting repeatedly for multiple times is achieved.

The invention relates to a method for treating NOx-containing flue gas, comprising the following steps: (1) introducing flue gas into a photobioreactor for microalgae culture, and collecting exhaust gas, wherein microalgae is NOx-tolerant microalgae; (2) carrying out solid-liquid separation on the culture system in the step (1) to obtain microalgae cells and a filtrate separately; (3) adding sodium peroxide into the filtrate obtained in the step (2), and introducing the exhaust gas obtained in the step (1) into the filtrate for treatment to obtain purified gas; and (4) carrying out denitrification treatment on the filtrate treated in the step (3). The invention also provides a device for treating the NOx-containing flue gas. The method and device mainly adopt a biological method to removeCO2 and NOX in the flue gas, do not need to use a catalyst and a large number of chemical reagents, and have the advantages of good removal effect, low treatment cost, economy, environmental protection and the like.

The invention discloses an aquatic organism carbon sequestration capacity strengthening system which comprises a high-temperature water body located on the upper portion, a low-temperature water body located on the lower portion and a transition water body, the high-temperature water body is provided with a top thermocline stabilizing mechanism and forms an upper strengthening thermocline, and the top thermocline stabilizing mechanism divides the high-temperature water body into a plurality of strengthening carbon sequestration areas. The low-temperature water body is provided with a bottom thermocline stabilizing mechanism and forms a lower reinforced thermocline, the bottom thermocline stabilizing mechanism divides the low-temperature water body into a plurality of reinforced carbon burying areas, and a transition water body is formed between the high-temperature water body and the low-temperature water body. According to the invention, the environmental requirements of water convection mechanism and photosynthesis on organic matter carbon sequestration are utilized, the environmental conditions of microbial decomposition of organic matters are limited, and water body temperature spring layer characteristics are established and controlled by controlling water body directional convection and limited convection, so that the organic matter burying environmental temperature is reduced; the water body temperature in the photosynthesis area is increased to improve the carbon sequestration efficiency and the carbon sequestration stability.

The invention provides a microalgae carbon sequestration system for regulation and control based on natural environment change. The microalgae carbon sequestration system comprises the following units: a microalgae culture unit; a light condensation unit which is used for receiving sunlight and improving the optical power density and comprises one or more light condensation reflecting plates withadjustable angles; a light splitting unit which is used for receiving the light transmitted from the light condensation unit and splitting the light and comprises one or more angle-adjustable light splitting plates; the light splitting plate which can transmit light of a spectral band with the highest microalgae photosynthetic efficiency to irradiate the microalgae culture unit and can reflect light of other bands at the same time; and a thermosyphon temperature control unit which is used for controlling the temperature of the microalgae culture unit by controlling the opening degree of the air regulating valve above the microalgae culture unit.

The invention provides a method for sealing carbon dioxide by using alkaliphilic algae. The method comprises the following steps: by taking the basophilic algae as an absorbent, culturing the basophilic algae through a eutrophic water body to obtain an alkaline solution, absorbing carbon dioxide in industrial flue gas by using the alkaline solution, simultaneously dropwise adding a waste magnesium salt solution into the solution, and reacting to generate an algal carbonate precipitate, thereby realizing mineral sequestration of carbon dioxide. Alkaliphilic algae and eutrophicated water widely existing in the natural environment are used as raw materials, low-cost carbon dioxide sequestration is achieved, and the method is simple, safe, environmentally friendly and easy to implement and has the potential of large-scale application.

The invention discloses a method for improving the oil production efficiency and carbon fixation rate of microalgae, comprising the following steps: (1) inoculating microalgae in a culture medium, and performing the first stage of cultivation; (2) the first stage of cultivation After the end, a phosphorus source and an iron source are added to the culture medium to carry out the second stage of cultivation, wherein the microalgae is Chlorella pyrenoidosa, and the culture conditions of the whole culture process are: the volume fraction of 15 %CO 2 As a carbon source, the gas supply rate is 0.1 v / v / m; the temperature is 27°C, the pH is 6.0~8.0, the light is 8500Lx, and the light-dark cycle is 16:8. The method of the invention can improve the oil production efficiency and oil content of the microalgae, and at the same time greatly improve the carbon fixation efficiency of the microalgae.

The invention relates to a strain of grease-rich Streptomyces sp. And a culture application thereof, the strain is Streptomyces sp. HSC-BY1, the classification name of the strain is Streptomyces sp. HSC-BY1, the strain is preserved in China General Microbiological Culture Collection Center (CGMCC) on May 12, 2020, and the preservation number is CGMCC No.19982. The invention also relates to a method for preparing the grease-rich Streptomyces sp. HSC-BY1. The grease-rich Streptomyces sp. HSC-BY1 can be used for preparing the grease-rich Streptomyces sp. HSC-BY1. The streptozotocaceae provided by the invention is high in nitrogen fixation efficiency, and the obtained biomass is rich in grease; particularly, the catalyst has the function of resisting NOx and SOx at the same time.

The invention relates to a treatment method and device for sulfur-containing flue gas. The flue gas is passed into a desulfurization reactor, and olefin waste lye is used as an absorbent to obtain desulfurization flue gas and desulfurization waste liquid; causticizing the desulfurization waste liquid Regeneration, to obtain a precipitate, high-temperature calcination, the obtained high-concentration SO 2 React with desulfurization flue gas to prepare sulfur; the generated gas is passed into the photobioreactor for microalgae cultivation, and exhaust gas is collected; the culture system is separated from solid and liquid, and microalgae cells and filtrate are harvested respectively; peroxide is added to the filtrate Sodium, and the exhaust gas is passed into the filtrate for reaction to obtain purified gas; after oxidation treatment, the filtrate is denitrified. The present invention couples olefin waste lye treatment with microalgae cultivation to treat SO-containing 2 , CO 2 , NO X The flue gas achieves efficient treatment of flue gas, and has the advantages of good removal effect, low treatment cost, economical and environmental protection.