15600 results about "Environmental chemistry" patented technology

A direct air capture (DAC) of CO2 system includes a reaction reactor having a solid, amine-functionalized sorbent configured to sequester CO2 from air; an in-situ dual-function device configured as a CO2 conversion reactor and an exchange fluid regeneration device; and the exchange fluid, recirculating between the reaction reactor and the dual-function device, configured to capture the sequestered CO2 from the solid sorbent in the reaction reactor and release the captured CO2 in the conversion reactor, the exchange fluid including one or more amino acids.

An atmospheric CO2 capture system includes a compartment housing a solid CO2 sorbent, an exchange fluid including a chemical component with selectivity towards CO2, and an electrochemical cell or mineralization reactor in fluid communication with the compartment, the system having a cycle including a first state of sorbing CO2 from incoming air onto the solid CO2 sorbent until a saturation point is reached; a second state of regenerating the sorbent by flooding the compartment with the exchange fluid to detach CO2 from the saturated sorbent and bind the detached CO2 to the chemical component; and a third state of regenerating the chemical component and utilizing the CO2 in the electrochemical cell or mineralization reactor.

An atmospheric CO2 capture system includes a compartment housing a solid CO2 sorbent, an exchange fluid including a chemical component with selectivity towards CO2, and an electrochemical cell or mineralization reactor in fluid communication with the compartment, the system having a cycle including a first state of sorbing CO2 from incoming air onto the solid CO2 sorbent until a saturation point is reached; a second state of regenerating the sorbent by flooding the compartment with the exchange fluid to detach CO2 from the saturated sorbent and bind the detached CO2 to the chemical component; and a third state of regenerating the chemical component and utilizing the CO2 in the electrochemical cell or mineralization reactor.

The invention discloses a high-entropy oxide for synergic nitrogen removal and catalysis as well as a preparation method and application thereof, and belongs to the technical field of material preparation, the high-entropy oxide is a single solid solution phase formed by five or more metal elements of Fe, Co, Ni, Cu, Mn, Ti and Ce and an oxygen element, the configuration entropy of the high-entropy oxide is greater than or equal to 1.5 R, R is a gas constant, and R is an oxygen constant. The mole fraction of each metal element is 0.1-0.3, and the sum of the mole fractions of the metal elements is 1. According to the high-entropy oxide with the synergistic nitrogen removal and catalysis effects and the preparation method and application thereof, a synergistic catalysis system is constructed through the high-entropy oxide and silicon carbide, and the high-entropy oxide has the multiple advantages of being high in nitrogen removal efficiency, high in stability, simple in process, environmentally friendly and wide in application range; the removal rate of total nitrogen and key nitrogen pollutants can reach 90% or above in the seawater high-salt environment, and the environment-friendly emission requirement is met.

The invention discloses a potassium fulvate chelated macroelement water-soluble fertilizer with stress resistance and growth promotion functions, and relates to the technical field of water-soluble fertilizers, the potassium fulvate chelated macroelement water-soluble fertilizer comprises the following raw materials by weight: 167-210 parts of mineral source potassium fulvate, 450-460 parts of potassium nitrate, 300-310 parts of urea, 150-160 parts of potassium dihydrogen phosphate, 30-40 parts of potassium sulfate, 15-25 parts of EDTA-disodium, and 5-15 parts of citric acid. 0.5 to 1.5 parts of brassinolide and 4 to 6 parts of polyaspartic acid; according to the potassium fulvate chelated macroelement water-soluble fertilizer with the stress-resistant and growth-promoting functions, through chelation cooperation of potassium fulvate and nitrogen, phosphorus and potassium, the solubility of the chelated phosphorus element in water is increased, and the chelated phosphorus element can be more uniformly distributed in soil; by adopting an EDTA-disodium and citric acid composite chelating system, volatilization and loss of nitrogen elements are reduced, the problem of precipitation of calcium, magnesium and phosphorus is solved, and the soil conditioner is suitable for hard water areas and especially has outstanding performance in saline-alkali soil and arid areas.

The invention relates to a particulate composition comprising, or substantially consisting of, urea, an inhibitor, preferably a urease inhibitor and / or a nitrification inhibitor, and an additive, wherein the additive comprises components (i) and (ii): (i) a carboxylic acid or an anhydride, salt, or derivative thereof; preferably a carboxylic acid salt or a carboxylic acid derivative, more preferably a carboxylic acid salt; and (ii) a polar polymer; preferably a water-soluble polar polymer. The invention further relates to a process for preparing the particulate composition, an additive for a particulate composition, and the use of the particulate composition as a fertilizer.

The invention belongs to the technical field of agriculture, and particularly provides a compound microbial agent and application thereof. The compound microbial agent is prepared from bacillus velezensis RKN1111, bacillus subtilis N-3 and paenibacillus mucilaginosus HX-02, and the compound microbial agent is prepared from bacillus velezensis RKN1111, bacillus subtilis N-3 and paenibacillus mucilaginosus HX-02, and the compound microbial agent is prepared from bacillus velezensis RKN1111, bacillus subtilis N-3 and paenibacillus mucilaginosus HX-02. The compound microbial agent can effectively improve the pH and EC of saline alkali soil, increase the content of alkali-hydrolyzable nitrogen, available phosphorus and quick-acting potassium in the soil, and play a significant role in increasing the plant height, stem diameter, chlorophyll content and aboveground biomass of corn plants in coastal saline-alkali soil.

The invention relates to the technical field of remote sensing data processing and water environment monitoring, and discloses a black and odorous water body intelligent identification method based on a multi-source remote sensing image, and the method comprises the steps: firstly obtaining a first high-resolution remote sensing image, and extracting a global water body mask through a TransUNet model; secondly, removing non-target plaques based on geometric features and a basic spectrum rule; then, calculating a black and odorous water body index by using the second multispectral remote sensing image, and screening suspected black and odorous water bodies by combining adaptive threshold segmentation; further, performing fine classification confirmation on the suspected target by using a third high-frequency remote sensing image and an Officient Net model; and finally performing fusion output on the identification result. Through multi-source data collaboration and a coarse screening-fine classification multi-stage strategy, the limitation of insufficient spatial-temporal resolution of a single data source is overcome, and the positioning precision and the anti-interference capability of urban black and odorous water body recognition are improved.

The invention relates to an organic matter near infrared spectrum inversion method and device for removing moisture based on radiation. The method comprises the steps that after a soil sample is pretreated, multiple moisture content gradients are regulated and controlled, the natural moisture permeation state is simulated, visible light-near infrared spectrum data and the organic matter content are collected, and a soil spectrum library is constructed; quantifying the interference weight of moisture on the spectrum by using a physical radiation transmission model to obtain a preliminary correction spectrum; moisture and organic matter features are extracted through a deep learning multi-branch architecture, a moisture characterization index is constructed, cross-domain feature alignment is realized in combination with a domain adversarial network, and an accurate correction spectrum is obtained; all the modules are integrated to construct a soil moisture elimination reconstruction spectrum model, after layered verification and iterative optimization, a to-be-detected soil spectrum is input into the model, organic matter content near infrared spectrum inversion is completed, and a result is output. According to the method, moisture interference is removed through combination of physical radiation and deep learning, the inversion precision is improved, and the method is suitable for rapid detection of organic matters in various moisture-containing soil.

The invention belongs to the technical field of sewage treatment, and particularly relates to an anaerobic ammonia oxidation-photoelectric denitrification deep nitrogen removal method. The method comprises the following steps: firstly, adopting a double-chamber reactor; introducing part of sewage into the cathode chamber, carrying out Anammox reaction under a dark state condition to remove ammonia nitrogen and part of nitrite nitrogen, and synchronously generating nitrate nitrogen; turning on a light source to irradiate the anode chamber, exciting photo-induced electrons by a photosensitizer, transmitting the photo-induced electrons to the cathode chamber through an external circuit, and driving the sulfur autotrophic denitrification sludge to reduce residual nitrite nitrogen and nitrate nitrogen generated by Anammox; the total nitrogen removal rate is close to 100%. According to the invention, photo-induced electrons are used as the only denitrification electron donor, so that the addition of a carbon source / sulfide is thoroughly avoided, and the risk of secondary pollution is eliminated. The method is suitable for green low-carbon deep treatment of sludge digestion liquid and pharmaceutical wastewater high-ammonia-nitrogen low-carbon-nitrogen-ratio sewage.

The invention belongs to the field of microbial electrochemistry and solid organic waste recycling, and discloses a microbial electrosynthesis enhanced solid wastewater hydrolysis and anaerobic digestion biogas high-value utilization system coupling microbial electrosynthesis, organic solid waste electrochemical-biological synergistic hydrolysis oxidation and anaerobic digestion. The system comprises a cathode chamber and an anode chamber which are separated by an ion exchange membrane, an electrochemical driving device and an anaerobic digestion unit communicated with the anode chamber. And the cathode chamber is provided with a cathode electrode and an anaerobic acetic acid production microbial system and is communicated with biogas generated by anaerobic digestion, so that carbon dioxide in the biogas is reduced at the cathode to generate acetic acid and methane-enriched gas is output. The anode chamber is provided with an anode electrode, organic solid waste and a hydrolytic microorganism system are added, electrochemical-biological synergistic hydrolytic oxidation of the organic solid waste and hydrolysates of the organic solid waste is used as an anode reaction, oxygen evolution is inhibited, and oxygen transmembrane migration is reduced; and the hydrolysate in the anode chamber flows into the anaerobic digestion unit to produce biogas, so that the integrated operation of solid wastewater hydrolysis and biogas upgrading is realized.

A system for capture of atmospheric CO2 includes a reaction reactor having a solid sorbent; and a mineralization reactor downstream from the reaction reactor, the system having three states including in the reaction reactor, a first state of sequestering CO2 from air into the solid sorbent; in the reaction reactor, a second state of releasing the sequestered CO2 from the sorbent by contacting the CO2-enriched sorbent with an exchange fluid having one or more amino acids and forming a CO2-enriched exchange fluid; and in the mineralization reactor, a third state of reacting the sequestered CO2 from the CO2-enriched exchange fluid with an alkaline feedstock to form a carbonate while regenerating the exchange fluid.

The present invention includes a spray drying disposable device for use in a spray drying system. The disposable has a spray drying head and a plasma drying chamber. The head has a spray dry nozzle assembly in fluid communication with the plasma source and the pressurized aerosol gas source. The pressurized gas flows in a vortex pattern that atomizes plasma droplets in the chamber. The head also includes a plenum has uniform air pressure of the drying gas. A baffle plate forms the floor of the plenum having drying gas jets that supply drying gas to the chamber. The atomized plasma droplets evaporate in the presence of the drying gas emitted from the jets to obtain dried plasma particles and humid air. A capture filter captures the dried plasma particles and allows the humid air to pass. The humid air passes through the gas outlet and the exhaust port.

The invention discloses a nitrifying bacterium agent suitable for aquarium, fishpond and other aquatic industries, the strain of the nitrifying bacterium agent is Glutamicacter nicotianae TJ-X, the nitrifying bacterium agent is preserved in Guangdong Microbial Culture Collection Center on February 12, 2025, and the preservation number is GDMCC NO.65877. The invention further discloses a preparation method of the nitrifying bacterium agent. The nitrifying bacteria TJ-X strain suitable for the aquarium industry can perform heterotrophic nitrification and aerobic denitrification under the condition that the salt content is 5wt%, under the condition of laboratory pure culture, within 8 hours, the removal rate of ammonia nitrogen, nitrite nitrogen and nitrate nitrogen is 99% or above, the COD degradation rate is 81%, the nitrifying bacteria TJ-X strain is suitable for the environment where organic matter, ammonia nitrogen, nitrite and nitrate coexist, and the nitrifying bacteria TJ-X strain can be applied to the aquarium industry. The microbial agent has the functions of degrading organic matters such as excrement of ornamental fish and fish food, converting organic nitrogen into inorganic nitrogen, and simultaneously degrading inorganic nitrogen such as ammonia nitrogen, nitrite nitrogen and nitrate nitrogen into nitrogen. And the strain is high in biological safety, high in environmental adaptability and high in growth density, can be applied to water industries with high organic matter content and inorganic nitrogen, such as the aquarium industry and aquaculture, and has a wide application prospect.

The invention relates to the technical field of fertilizers, in particular to an environment-friendly water-soluble fertilizer containing a seaweed extract and polyglutamic acid. The water-soluble fertilizer is prepared by preparing seaweed oligosaccharide and double-grafted poly-L-gamma-sodium glutamate and compounding and complexing the seaweed oligosaccharide and the double-grafted poly-L-gamma-sodium glutamate, has the characteristics of low salting-out, high stability, no precipitation, good slow release performance and the like, and can continuously release nutrients and keep a solution clear and transparent under a low-salt condition; and because the polyglutamic acid and seaweed extract compound drip irrigation agent has the chelation and water retention characteristics of the polyglutamic acid and the natural growth promoting effect of the seaweed extract, the crop rhizosphere nutrient absorption efficiency and stress resistance are remarkably improved, the compound drip irrigation agent is suitable for drip irrigation and water and fertilizer integrated application of greenhouse vegetables, fruit trees and field crops, and the comprehensive effects of high efficiency, low salt load and environment friendliness are achieved.

The invention provides a rapid evaluation method and system for the soil fertility level, and relates to the technical field of soil fertility detection.The rapid evaluation method comprises the steps that an original absorbance spectral data curve is obtained by scanning a soil sample, the moisture peak absorbance, the actual peak position wavelength and the moisture synthetic frequency characteristic peak width are extracted, and a spectral data basis is provided; a water-salt optical path coupling factor is calculated, water-salt correction operation is carried out in combination with a volume correction coefficient, a virtual dry soil spectrum data curve is obtained, interference of salt on a water optical path is quantified, and a water background and salt masking are eliminated; constructing a characteristic virtual baseline of the organic matter and the total nitrogen, calculating an integral area to obtain characteristic intensity of the organic matter and the total nitrogen, and providing a physical input variable for quantitative inversion; introducing a water-salt optical path coupling factor to invert the organic matter content and the total nitrogen content, and correcting signal depression caused by salt stress; the effective fertility index is calculated and graded by combining the organic matter content and the total nitrogen content of the soil, and the actual fertilizer supply capacity of the soil is comprehensively evaluated.

A thermochemical reactor for receiving a source of atmospheric carbon dioxide and reducing the atmospheric carbon dioxide is provided. In one or more embodiments, the thermochemical reactor may be part of an atmospheric carbon capture system that includes a solid sorbent and an exchange fluid that is cycled between the solid sorbent and the thermochemical reactor.

The invention belongs to the technical field of soil improvement, and discloses a preparation method of a humic acid biochar saline-alkali soil conditioner. The preparation method comprises the following steps: by taking waste edible fungus chaff as a raw material, activating the waste edible fungus chaff with a KOH solution, pyrolyzing the waste edible fungus chaff under a limited oxygen condition to obtain fungus chaff-based biochar with a porous structure, mixing the fungus chaff-based biochar with humic acid, a sodion replacement material (desulfurized gypsum powder and / or calcium chloride) and purified water according to a certain mass ratio, and drying and fixing at medium temperature to obtain the modifier. According to the modifier, the porous adsorption performance of the biochar, the pH adjustment and agglomeration improvement functions of the humic acid and the sodium ion replacement capacity of the calcium source material are comprehensively exerted, the sodium ion content in the saline-alkali soil is synergistically reduced, and the soil agglomeration structure and the water and fertilizer retention capacity are improved. The prepared modifier is especially suitable for soil treatment of moderate and severe saline-alkali soil in which the ratio of sodium ions to exchangeable cations exceeds 10%, and has agricultural waste resource utilization and ecological restoration values.

The invention discloses an application of a molybdenum disulfide-based piezoelectric catalytic material in a seawater uranium extraction material, and relates to the technical field of seawater uranium extraction, thiourea and sodium molybdate are used as precursors, and a MoS2 nanoflower with a specific 1T / 2H composite crystal structure is constructed through a hydrothermal synthesis technology. The method is placed in a uranyl nitrate solution, ultrasonic treatment is combined, efficient extraction of uranium can be achieved, and the method has potential application to extraction of uranium from seawater. The method is simple in process and environment-friendly, almost does not generate harmful waste in the synthesis process, does not need complex operation, and has good amplification preparation potential.

The invention provides an underground water environment monitoring system and method, and the method comprises the steps: carrying out the three-dimensional fluorescence spectrum full-wave band scanning of a known type of pollution source reference sample in a target monitoring region, and obtaining a three-dimensional fluorescence spectrum data set; performing characteristic analysis on the three-dimensional fluorescence spectrum data set to obtain fluorescence characteristic components, and determining a characteristic excitation wavelength corresponding to each fluorescence characteristic component; the classification contribution degree of each characteristic excitation wavelength is evaluated, and a characteristic excitation wavelength combination during source tracing of the pollution source is obtained through screening; performing fixed wavelength scanning on the to-be-detected underground water sample in the target monitoring area according to the characteristic excitation wavelength combination, and determining the initial type of the pollution source; and determining the relative contribution degree of the type of the pollution source of the to-be-detected underground water sample, simulating the migration trend of the pollution plume according to the underground water migration and diffusion model, and generating the position of the pollution source of the to-be-detected underground water sample. By adopting the scheme of the application, the pollution source of the underground water can be quickly identified and positioned at low cost.

The invention relates to a vertical flow enhanced biological denitrification device and a sewage treatment method, a denitrification agent adding assembly is additionally arranged at a proper position of an existing vertical flow reaction device, namely the outer side of an outer inclined flow guide part, a corresponding enhanced denitrification agent can be added at a selected point position, a denitrification reaction is further enhanced, and the denitrification effect is improved. The selective reaction of the functional microorganism reaction is improved, nitrate generated by the anaerobic ammonia oxidation reaction is consumed, and a sufficient matrix is provided for anaerobic ammonia oxidation, so that the anaerobic ammonia oxidation reaction is greatly promoted, and the total nitrogen removal rate is further improved; by accurately controlling the dosing position and accurately dosing according to the reaction, the nitrogen removal efficiency of the autotroph is enhanced, the coordination of the minimization of the dosing amount of the medicament and the maximization of the nitrogen removal efficiency is realized, and finally, the green, low-carbon, economical and efficient nitrogen removal target of the sewage is achieved.

The invention relates to the technical field of functional polymer composite materials, and provides diatomite modified composite super absorbent and rapid absorbent resin and a preparation method thereof. The preparation raw materials of the diatomite modified composite high-water-absorption and rapid-water-absorption resin provided by the invention comprise acrylic acid, acrylamide, sodium hydroxide, N, N '-methylene bisacrylamide, ammonium persulfate and modified diatomite. The diatomite is modified by the silane coupling agent, the agglomeration problem of the diatomite is solved, the compatibility with organic monomers is improved, and the modified diatomite, acrylic acid and acrylamide are utilized to construct an organic-inorganic synergistic three-dimensional porous network structure, so that the resin has ultrahigh water absorption rate, rapid water absorption performance and good water retention stability. Meanwhile, the preparation method disclosed by the invention does not need nitrogen protection, has the advantages of simple process, controllable raw material cost and easiness in industrial mass production, and is suitable for multiple fields such as water-saving agriculture, soil moisturizing, landscaping and the like.

This invention belongs to the field of catalyst technology, specifically relating to a selective reduction catalyst for the production of sulfur from sulfur dioxide and its application method. The selective reduction catalyst for sulfur production from sulfur dioxide contains 1-2 wt% cobalt (CoO), 4-10 wt% molybdenum (MoO3), and 2-4 wt% zinc (ZnO), with TiO2-Al2O3 as the support. This invention exhibits good wide-temperature reaction performance, heat resistance, and water vapor resistance; the single-pass yield of elemental sulfur is higher than 80%, and the reaction process has high efficiency, showing promising application prospects.

The invention discloses a method for constructing a multicellular living body material by adopting a droplet bioreactor, which belongs to the crossing field of biological materials and microbial engineering, and comprises the following steps: (1) resuspending different cells in different polymer solutions to prepare degradable or phase-separable hydrogel particles containing cells; (2) dispersing the hydrogel particles in a cross-linkable hydrogel matrix to form a composite hydrogel; and (3) curing the composite hydrogel, and then carrying out degradation treatment to obtain the liquid cavity structure multicellular system bioreactor with spatial partition and dynamic interaction characteristics. According to the invention, ordered distribution and metabolism synergy of different microorganisms in space can be realized, controllable degradability and excellent mass transfer performance are realized, bacterial slow release and metabolite exchange can be maintained, and the method is suitable for long-term stable operation of a continuous flow reactor. The method has wide application prospects in the fields of green biological manufacturing, renewable energy source production, environmental restoration, biomedical engineering and the like.

The invention relates to the technical field of soil remediation, in particular to a biochar-humic acid-calcium alginic acid composite saline-alkali soil modifier and a preparation and application method thereof. The modifier adopts a multi-layer structure design: biochar is pre-adsorbed by calcium chloride, compounded with sodium humate, and then crosslinked with sodium alginate to form a gel to form a composite inner core; secondly, sulfobetaine methacrylate and vinyl phosphonic acid are introduced into a sodium alginate molecular chain through graft polymerization, and modified sodium alginate is obtained to serve as an outer layer coating material; and finally, dipping the composite inner core into the outer layer solution, and carrying out graded recalcification by calcium chloride and short-time treatment by sodium sulfate to obtain a final product. Through the synergistic effect of calcium ion slow release of the inner core and zwitterionic characteristics of the outer layer, efficient replacement and long-term stable regulation and control of soil sodium ions are achieved, the pH value, the conductivity and the alkalization degree of soil are remarkably reduced, the water holding capacity is effectively improved, and the soil conditioner is suitable for sustainable improvement of moderate and severe saline-alkali soil.

The utility model relates to the technical field of water treatment equipment, in particular to a water path system for a mineral spring water purifier and the mineral spring water purifier. The waterway system for the mineral spring water purifier comprises an alkaline filter material, an acidic filter material and a mineralized waterway, wherein the alkaline filter material and the acidic filter material are sequentially arranged in the mineralized water path, or the acidic filter material and the alkaline filter material are sequentially arranged in the mineralized water path. Compared with the prior art, the alkaline filter material is matched with the acidic filter material, so that the release of mineral substances in the alkaline filter material can be promoted by using acidic substances released by the acidic filter material, or the release of the mineral substances in the acidic filter material can be promoted by using alkaline substances released by the alkaline filter material; therefore, the problem that the content of mineral substances in the water body provided by the mineral spring water purifier does not reach the standard can be solved.

The invention discloses a composite conditioner for acid soil of slope cropland and application of the composite conditioner. The conditioner comprises the following components in percentage by mass: 12%-18% of calcium peroxide, 18%-32% of a buffer mineral compound, 1.5%-3.0% of an anti-scouring controlled-release material, 10%-25% of a nutrient carrier and fertilizer, 0.5%-3.0% of a binder and a granulation aid, and the balance of inert filler and water. The preparation process comprises the steps of dry mixing, granulation, drying and coating. The product provided by the invention can realize high residue of CaO and stable pH under the condition of heavy rainfall of slope cropland, effectively inhibit the pH fall of acid soil, reduce aluminum toxicity and reduce nutrient loss. By controlling the content and proportion of the calcium peroxide, the buffer mineral compound and the anti-scouring controlled-release material, the calcium peroxide, the buffer mineral compound and the anti-scouring controlled-release material have a synergistic effect in a slope cropland environment, so that not only is the initial rapid acid inhibition capability ensured, but also the lasting pH stability and high residual rate are realized through buffer and controlled-release technologies.

The invention provides a method suitable for water retention of soil with different textures. In order to better perform size matching between the biochar and soil particles, particle size grading is performed on the biochar according to the size of soil aggregates, and three kinds of biochar with the particle size larger than 2.0 mm, the particle size ranging from 0.25 mm to 2.0 mm and the particle size smaller than 0.25 mm are obtained. The three kinds of biochar with different particle sizes are used in different types of soil respectively, and 5% of biochar with the particle size of 0.25-2.0 mm is selectively applied according to the water retention requirement of the arid area loam farmland; according to the drainage requirements of loam waterlogging areas with more rainfall, 5% of biochar with the particle size larger than 2.0 mm is selectively applied; and 5% of biochar with the particle size smaller than 0.25 mm is selectively applied for water and soil conservation of sandy soil in the arid region. By scientifically regulating and controlling the particle size and the application amount of the biochar, the biochar is matched with the specific properties of the soil, so that the water retention capacity of the soil is improved, and the soil efficiency is improved.

The invention belongs to the technical field of preparation of sulfur, and particularly relates to a process for producing sulfur from sulfur dioxide. The SO2 introduced by the sulfur dioxide gas flow is selectively reduced into elemental sulfur by using hydrogen introduced by the hydrogen flow under the temperature condition of 160-320 DEG C through one or more reaction devices; each reaction device is provided with one or more selective reduction reactors which are connected in series, one or more catalyst bed layers are arranged in each selective reduction reactor, and each catalyst bed layer is filled with a selective reduction catalyst. The method is simple in process reaction, short in flow and high in efficiency, products except sulfur are water or basically water, and the method has a certain application prospect.

The invention discloses a hydrogel-based water-energy-resource co-production solar evaporator and application thereof, and belongs to the technical field of chemistry and environment, the hydrogel-based water-energy-resource co-production solar evaporator is prepared by taking sodium alginate hydrogel as a matrix, adding carbon nanotubes and a titanium-based lithium ion sieve or a metal-doped titanium-based lithium ion sieve into a solution of the sodium alginate hydrogel, taking polyurethane sponge as a carrier frame, and preparing the hydrogel-based water-energy-resource co-production solar evaporator. Ca2 + is adopted as a cross-linking agent to construct a solar evaporator with a flexible size (centimeter-level to meter-level components can be prepared according to application scenes), the solar evaporator is used for the solar driven evaporation process of lithium-containing water resources such as salt lake seawater, and Li + selective enrichment, fresh water collection and waste heat power generation are synchronously achieved. Moreover, the evaporator has the characteristics of simple preparation process, low cost and excellent environmental compatibility, also has a good removal effect on salt ions, and keeps stable fresh water collection performance in a long-time operation process.