106 results about "Sulphur oxidation" patented technology

The invention relates to the technical field of microorganisms, and discloses burkholderia gladioli as well as a bacterial agent and application of the burkholderia gladioli. The Burkholderia gladioli (Burkholderia gladioli) CCTCC (China Center For Type Culture Collection) NO: M20242288 provided by the invention has good capacities of fixing nitrogen, dissolving phosphorus, dissolving zinc, producing siderophores and oxidizing sulfur, and can be used for regulating the nutrient structure of soil and converting substances which are difficult to utilize by plants in the soil, so that the growth of the plants is promoted, and the stress resistance of the plants is improved; the strain also can be used for antagonizing Fusarium solani, Fusarium equiseti, Fusarium verticillium, Fusarium verticillium and Rosellinia necatrix, can be used for antagonizing Fusarium solani, Fusarium equiseti, Fusarium verticillium and Rosellinia necatrix, and can also be used for antagonizing Fusarium solani, Fusarium equiseti, Fusarium verticillium, Rosellinia necatrix, Fusarium moniliforme and Rosellinia necatrix, Fusarium moniliforme and Rosellinia necatrix. Besides, the burkholderia gladioli provided by the invention is a strain separated from rape farmland soil, and compared with a strain screened by extreme environment and laboratory mutagenesis, the burkholderia gladioli has better adaptability when being applied to a planting environment, and can be stably colonized in plant rhizosphere and soil, so that the burkholderia gladioli stably plays a growth promoting role for a long time, is safe and environment-friendly, and has a wide application prospect. Wide application prospects are realized.

The invention relates to the technical field of microorganisms, and discloses trichoderma yunnanense and application thereof. The Trichoderma yunnanense CCTCC NO: M 2025645 provided by the invention is a dominant strain of a high-yield siderophore, the activity of the siderophore is 69.79%, and the Trichoderma yunnanense can be used for synthesizing and secreting carboxylic acid type siderophore; the strain has a sulfur oxidation function; in addition, the invention also provides an application of the trichoderma sp. In regulation and control of plant diseases, the trichoderma sp. Disclosed by the invention can be used for antagonizing fusarium solani, fusarium graminearum, fusarium moniliforme, Rosellinia necatrix and Alternaria brassicae (Fr.) Kissler, and the trichoderma sp. Can be used for antagonizing fusarium solani, fusarium graminearum, fusarium moniliforme, Rosellinia necatrix and Alternaria brassicae (Fr.) Kissler, and can be used for antagonizing fusarium solani, fusarium graminearum, fusarium moniliforme, Rosellinia necatrix and Alternaria brassicae. The Trichoderma yunnanense provided by the invention is a strain separated from tobacco planting soil, and compared with a strain subjected to mutagenesis screening in an extreme environment and a laboratory, the Trichoderma yunnanense has better adaptability when being applied to a planting environment, and can be stably colonized in plant rhizosphere and soil, so that the Trichoderma yunnanense stably plays a growth promoting role for a long time, is safe and environment-friendly, and has a wide application prospect.

The invention discloses a bifunctional CoCu catalyst, a preparation method thereof and application of the bifunctional CoCu catalyst in sulfur and ammonia production. A Cu-doped CoOOH bifunctional electrocatalyst is synthesized on foam cobalt (CF) through an in-situ growth method and is used for a cathode NO3RR and an anode SOR at the same time. In a sulfur oxidation reaction, the cobalt-based catalyst can effectively oxidize sulfur or a compound thereof into a substance with a higher valence state, such as sulfate, so that removal and conversion of sulfur are realized. In addition, due to low cost and environmental friendliness of the catalyst, the catalyst has great application potential in the aspect of electrochemical coupling treatment of sulfur and nitrate pollutants. Therefore, the invention designs a bifunctional electrocatalyst capable of simultaneously exerting the advantages of Cu-based and cobalt-based catalysts, and is expected to realize efficient electrochemical coupling treatment of sulfur and nitrate.

The invention relates to the technical field of sewage treatment, and particularly provides a method and a system for realizing beneficiation wastewater N, N-diethyldithiocarbamate-C-N-S synergistic oxidation-reduction coupling treatment by an MABR oxygen layering process. According to the method and the system, a time sequence dissolved oxygen (DO) dynamic regulation and control strategy is innovatively developed: through periodic / pulse type switching anaerobic-hypoxia-aerobic conditions, oxygenolysis and ammonification reaction of N, N '-diethyldithiocarbamate are intensified directionally, and toxicity inhibition of intermediate products on functional bacteria is relieved. Based on the strategy, the system can accurately utilize biological membrane oxygen gradient spatial distribution in a single MABR reactor to realize a cascade reaction of sulfur oxidation-ammonification-aerobic nitrification-anoxic denitrification of ethyl sulfur nitrogen; or aiming at high-concentration diethyldithiocarbamate (gt; 50 mg / L) is coupled with a front anaerobic reactor, and ammoniation detoxification and denitrification nitrogen removal are enhanced.

The invention discloses a sulfur-oxidizing bacterium screening and enriching nutrient solution, a sulfur-oxidizing bacterium enriching method and a deodorizing method. The sulfur-oxidizing bacterium screening and enriching nutrient solution comprises 1.0 g.L <-1 > of K2HPO4, 0.5 g.L <-1 > of NaHCO3, 0.05 g.L <-1 > of NH4Cl, 0.225 g.L <-1 > of Na2S. 9H2O and 0.001 g.L <-1 > of trace elements, wherein the trace elements comprise 0.5 g.L <-1 > of EDTA (Ethylene Diamine Tetraacetic Acid), 0.01 g.L <-1 > of (NH4) 6Mo7O24. 4H2O, 0.04 g.L <-1 > of ZnSO4. 7H2O, 0.03 g.L <-1 > of MnCl2. 7H2O, 0.02 g.L <-1 > of CuSO4. 5H2O The deodorization performance of the municipal sewage treatment plant is improved through synchronous desulfurization and deamination of the acidophilic sulfur-oxidizing bacteria, and compared with a traditional deodorization process, the synchronous desulfurization and deamination process can enrich high-abundance sulfur-oxidizing bacteria in a short time and shows higher ammonia gas and hydrogen sulfide removal capacity.

The invention relates to the field of sewage treatment, in particular to a sewage treatment system capable of recycling sulfur based on sulfur autotrophic denitrification, which comprises a pretreatment tank, an aerobic tank, a sulfur autotrophic denitrification reactor, an anaerobic tank and a secondary sedimentation tank which are sequentially connected, and the part of the secondary sedimentation tank containing supernatant mixed liquor is communicated with the aerobic tank; the anaerobic tank contains sulfate reducing bacteria, and sulfate radicals (SO4 < 2->) in the sewage discharged from the sulfur autotrophic denitrification reactor are reduced into S < 2-> by the anaerobic tank under the action of the sulfate reducing bacteria; water containing S < 2-> in the anaerobic tank enters a secondary sedimentation tank, and supernatant mixed liquor in the secondary sedimentation tank flows back to the aerobic tank; sulfur oxidizing bacteria are contained in the aerobic tank, and S < 2-> in the liquid flowing back from the secondary sedimentation tank is oxidized into S < 0 > and S2O3 < 2-> by the aerobic tank under the action of the sulfur oxidizing bacteria. According to the scheme, the problem that more SO4 < 2-> is generated in the current sulfur autotrophic denitrification process is solved, meanwhile, the consumption of electron donors is reduced, and the cost is reduced.

The invention discloses a catalytic electrode which comprises a substrate, and an anti-corrosion layer and a sulfur-phobic layer which are sequentially attached to the substrate, the substrate is a blank foamed nickel substrate, the anti-corrosion layer is formed by dipping the foamed nickel substrate with a ferric salt solution, and the sulfur-phobic layer is formed by processing a precursor with a cobalt salt solution through electro-deposition. Accordingly, a corresponding preparation method is also established, a blank foamed nickel substrate is adopted, firstly, the foamed nickel substrate is subjected to dipping treatment with an iron salt solution to obtain a precursor with an anti-corrosion layer, and then the precursor is subjected to electro-deposition treatment with a cobalt salt solution to form the sulfur-phobic layer on the anti-corrosion layer. Wherein the anti-corrosion layer can isolate a high-sulfur environment and prevent the substrate from being corroded; the sulfur phobic layer may prevent sulfur products from depositing and passivating the electrode. The catalytic electrode provided by the invention solves the problems of sulfur reaction corrosion and passivation, shows excellent catalytic activity and stability, and can be used for catalyzing sulfur oxidation reaction for a long time. In conclusion, the method has the advantages of mild conditions, simple process, economy and practicability, and has obvious large-scale industrial production potential.

The invention belongs to the technical field of strain screening, discloses a high-throughput screening method for sulfur-oxidizing bacteria and application, and particularly discloses application of 7-amino-4-methylcoumarin to screening of the sulfur-oxidizing bacteria or preparation of products for screening of the sulfur-oxidizing bacteria. The invention discloses the application of 7-amino-4-methylcoumarin in screening sulfur-oxidizing bacteria for the first time, and rapid, convenient, high-throughput and high-efficiency screening of sulfur-oxidizing bacteria can be realized through 7-amino-4-methylcoumarin.

The present application relates to a kind of shiff base metal complex liquid desulfurizer and its preparation method and use, by amine and aldehyde condensation preparation the structure in the shiff base ligand containing C=N double bond, the lone pair electron of nitrogen atom on shiff base and metal atom are mutually cooperated to form shiff base metal complex, under the condition of oxygen or air as activating agent, the catalyst can be oxidized into inorganic sulfur with organic sulfur.The shiff base metal complex liquid desulfurizer of the present application is synthesized by low-cost raw material, without adding desulfurizer in the desulfurization process, solve the problems such as large amount of existing desulfurizer, need to be added continuously.At the same time, the desulfurizer is liquid desulfurizer, increase the contact area with organic sulfur gas, improve the desulfurization efficiency, the desulfurization rate of methyl mercaptan is higher than 99%.

The invention relates to a method for regulating and deacidifying in a bioleaching process of low-grade copper sulphide ore, aiming at the problem of excessive acid caused by excessive oxidation of pyrite in a dump leaching system, a thiocyanate bactericide is added into the bioleaching system of the low-grade copper sulphide ore, and the thiocyanate bactericide is dissolved in a spray liquid of the bioleaching system, and is added into the spray liquid of the bioleaching system; under the catalytic action of mineral leaching microorganisms, oxidation of ferrous ions is enhanced, so that the oxidation-reduction potential of a solution is increased, oxidation of pyrite is intensified, acid accumulation is excessive, the thiocyanate bactericide can remarkably inhibit the activity of part of sulfur-oxidizing bacteria and even kill part of sulfur-oxidizing bacteria, and therefore the activity of ferrous oxide is reduced; compared with the prior art, the method has the advantages that the sulfur oxidation activity of microorganisms is greatly influenced, but the oxidation influence on iron is relatively small, so that the acid leaching is reduced under the condition that the copper leaching of the copper sulfide ore is not influenced, the copper leaching is not influenced, the acid leaching is reduced, the production cost is reduced, the environmental influence is reduced, and the like.

The invention discloses a thermal power plant boiler flue gas desulfurization and denitrification integrated method, namely, a chemical absorption and catalytic reduction combined mode is researched to effectively treat sulfur oxide sulfur (SO2) and nitrogen oxide (NOx). The method comprises the following steps: firstly, converting sulfur-containing emissions into harmless substances by using a redox agent through a wet desulphurization technology, and then converting NOx into nitrogen and water by applying a selective catalytic reduction (SCR) technology. Operation data analysis shows that the removal rates of SO2 and NOx respectively reach 97% and 94%, and the desulfurization and denitrification efficiency is far higher than that of a traditional thermal power plant boiler. According to the desulfurization and denitrification integrated technology, the limitation of a traditional desulfurization and denitrification technology is broken through, and a new technical scheme is provided for a thermal power plant.

The present application relates to the technical field of health, environmental management and resource development, and discloses an alkaline-sulfur oxidizing bacteria and its application in water pollution treatment and bioleaching. The alkaline-sulfur oxidizing bacteria is named 381-2, which has been preserved in the China General Microbiological Culture Collection Center on December 23, 2024, and the preservation number is CGMCC No. 33017; the microbial classification name is Stutzerimonas sp. The present application isolates a new species of Stizolobium strain from a deep-sea hydrothermal area Stutzerimonas sp. . The strain has strong and rapid oxidation ability of thiosulfate ions, and also has the characteristics of producing alkali, so it can be applied to the fields of water pollution treatment and bioleaching.

The present disclosure discloses the identification and introduction of a specific heterologous gene encoding an alpha-1,2-fucosyltransferase (denoted smob) into LNT producing strains for the specific production of LNFP-I. The smob gene is derived from the microorganism Sulfuriflexus mobilis (https: / / www.dsmz.de / collection / catalogue / details / culture / DSM-102939), a sulfur-oxidizing bacterium isolated from a saline lake sediment.

The invention discloses a method for preparing high-purity lead sulfate through lead-zinc ore conversion driven by biological oxidation of sulfur, and belongs to the technical field of biological metallurgy. According to the method, sulfate ions are generated in situ and mineral dissolution and lead and zinc metal ion release are promoted through the biological oxidation effect of acidophilic sulfur oxidizing bacteria on sulfur components in lead-zinc ore; and the bioleaching process of minerals is enhanced by optimizing reaction conditions (culture medium composition, pH, temperature, ore pulp concentration and the like). After leaching, Zn < 2 + > exists in a leaching solution, Pb < 2 + > reacts with SO4 < 2-> generated by sulfur biological oxidation in time to form a high-purity lead sulfate precipitate, finally, separation is performed, the precipitate is simply washed and then dried, a lead sulfate product with the purity larger than or equal to 99% is obtained, and the conversion rate gt of Pb to PbSO4 in the lead zinc ore is larger than or equal to 99%; the yield is 99.6%. Compared with a traditional acid leaching method, the method has the advantages of being low in energy consumption, small in pollution, high in metal recovery rate and excellent in product purity, and is suitable for efficient and clean utilization of lead zinc ore resources.

The invention relates to the technical field of sanitation, environmental governance and resource development, and discloses an alkali-producing sulfur oxidizing bacterium and application thereof in water pollution governance and bioleaching. The alkali-producing sulfur-oxidizing bacterium is named as 381-2, is preserved in China General Microbiological Culture Collection Center (CGMCC) on December 23, 2024, and has a preservation number of CGMCC No.33017; the microbial classification is named as Stutzerimonas sp., and the microbial classification is named as Stutzerimonas sp. According to the invention, a new species strain Stutzerimonas sp. Of Stutzerimonas sp. Is obtained by separation from a deep sea hydrothermal zone. The bacterial strain has relatively strong capability of rapidly oxidizing thiosulfate ions and also has alkali production characteristic, so that the bacterial strain can be applied to the fields of water pollution treatment and bioleaching.

The invention discloses a chalcopyrite bioleaching method based on synergistic effect of mechanical activation and potential regulation and control, which comprises the following steps: sequentially carrying out crushing and mechanical activation pretreatment on chalcopyrite, and carrying out pulp mixing to obtain initial ore pulp; adding an acid leaching solution containing iron ions into the obtained initial ore pulp to obtain ore pulp containing ferric iron; and sulfur-oxidizing bacteria are inoculated into the obtained trivalent iron-containing ore pulp, leaching is carried out under the condition of constant temperature, and then solid-liquid separation is carried out to obtain copper-containing leachate and leached tailings. According to the method, mechanical activation pretreatment is combined with the synergistic effect of sulfur-oxidizing bacteria (Acidithiobacillus caldus) and Fe < 3 + >, the redox potential is controlled to be 300-350 mV, and the copper leaching rate is larger than or equal to 95%. According to the method, sulfur oxidizing bacteria are used for oxidizing elemental sulfur to generate sulfuric acid, potential is controlled, acid consumption is reduced, passivation is avoided, and the method has the advantages of being efficient, environmentally friendly and high in resource utilization rate.

The present invention discloses a sewage treatment method for realizing water purification and synergistic greenhouse gas emission reduction based on alkalization of alkaloids, comprising the following steps: After mixing domestic sewage with water containing sulfate, it enters a sulfate reduction reactor, where organic matter is oxidized to CO2 and sulfide is generated, and CO2 is fixed in the water body in the form of HCO3 ‑ ; The effluent of the sulfate reduction reactor enters a selective sulfur oxidation reactor, where sulfide is oxidized to elemental sulfur while partially reducing nitrate nitrogen; The effluent of the selective sulfur oxidation reactor enters a sulfur sedimentation tank to recover elemental sulfur; The effluent of the sulfur sedimentation tank enters a nitrification reactor for ammonia oxidation and nitrification, while consuming the remaining organic matter; The effluent of the nitrification reactor and the elemental sulfur recovered from the sulfur sedimentation tank enter a deep denitrification and nitrogen removal reactor to conduct deep nitrogen removal of the sewage. The method of the present invention has a small CO2 emission, a small sludge production emission, and a relatively high effluent pH value.

The invention relates to a cross-feeding complex microbial inoculant capable of synchronously removing beneficiation reagents and heavy metal pollution and application thereof, and belongs to an environmental microbial remediation and wastewater treatment technology, and the cross-feeding complex microbial inoculant is obtained by inoculating a mixed bacterial solution of a sulfur oxidizing bacteria (Thiobacillus.sp) bacterial suspension and a sulfate reducing bacteria (Desulfomacululprofrudii) bacterial suspension into a liquid culture medium, and carrying out shaking culture at 120 rpm under the conditions of constant temperature of 30 DEG C and micro-aerobic condition until the OD600 value reaches 0.6-1.0. According to the cross feeding complex microbial inoculant, through the metabolic synergistic effect of sulfur oxidizing bacteria (Thiobacillus.sp) and sulfate reducing bacteria (Desulfotomacullum profrudii), synchronous efficient degradation of xanthate and synchronous fixation treatment of heavy metals (such as Cu, Pb and Zn) are achieved in a reactor.

The invention discloses a biological desalting method for high-concentration wastewater, and relates to the technical field of wastewater treatment.According to the biological desalting method for the high-concentration wastewater, efficient removal and resource utilization of salt are achieved through a salt resource oriented conversion technology and a staged biological treatment process, and in the anaerobic stage, the anaerobic stage and the anaerobic stage are separated; sulfate ions in the wastewater are reduced into sulfur ions by using sulfate reducing bacteria, organic matters are decomposed at the same time, the chemical oxygen demand of the wastewater is reduced, in the aerobic stage, sulfur oxidizing bacteria oxidize the sulfur ions into elemental sulfur, resource recovery of sulfur is realized, and in the electrochemical auxiliary stage, the sulfur oxidizing bacteria oxidize sulfur ions into elemental sulfur. According to the method, the salt-tolerant thiobacillus oxidizes chloride ions into chlorine in the microbial electrolytic tank, resource recycling of chlorine is achieved, through the method, the salt content in the wastewater is effectively reduced, valuable elemental sulfur and chlorine are recycled, and remarkable economic and environmental benefits are achieved.

The invention belongs to the technical field of microorganisms, discloses screening and application of efficient desulfurizing bacteria, and particularly discloses acinetobacter which is characterized in that the preservation name of the acinetobacter is Acinetobacter sp.HSC-01, the acinetobacter is preserved in Guangdong Microbial Culture Collection Center, the preservation number is GDMCC No: 64605, and the preservation date is May 11, 2024. The invention provides Acinetobacter sp.HSC-01 with an efficient sulfur oxidation function, the strain can effectively remove sulfides in aquatic water, the action time of the strain is 8 h, and the removal rate of the sulfides can reach 96% or above. Meanwhile, the strain can also be used for oxidation of black mud in an aquaculture pond. The efficient desulfurization capacity has potential application value in aquaculture sewage and sludge treatment.

To provide a desulfurization apparatus capable of treating hydrogen sulfide while suppressing a decrease in methane gas concentration in biogas.SOLUTION: A desulfurization apparatus 16 biologically treats hydrogen sulfide in biogas generated by methane fermentation processing of organic wastewater or organic waste using sulfur-oxidizing bacteria, and includes: a reaction tank 20 to which the biogas is supplied; a non-porous hollow fiber membrane 22 installed in the reaction tank 20; an oxygen-containing gas supply device 24 that supplies an oxygen-containing gas to the hollow fiber membrane 22; an oxygen-containing gas exhaust pipe 26 that exhausts the oxygen-containing gas from the hollow fiber membrane 22 to the outside of the reaction tank 20; and a water spraying device 28 that sprays water onto an outer surface of the hollow fiber membrane 22. The hollow fiber membrane 22 allows oxygen in the oxygen-containing gas to permeate into the reaction tank 20 and supplies the oxygen to a biofilm including the sulfur-oxidizing bacteria formed on the outer surface of the hollow fiber membrane 22.SELECTED DRAWING: Figure 1

The invention discloses a method and a system for producing an organic fertilizer by recycling sulfur based on methane complex iron desulfurization. The method comprises the following steps: S1, carrying out mechanical filter pressing dehydration on a wet sulfur-containing cake generated by methane complex iron desulfurization; s2, placing the obtained purified sulfur cake in a high-temperature aerobic fermentation area; s3, in the high-temperature aerobic fermentation process, adding a composite microbial agent in a specific proportion; s4, in the high-temperature aerobic fermentation process, maintaining and adjusting the pH value of the system by utilizing the organic acid secreted by the compound microbial agent and combining with an externally added acidic regulator; s5, under the synergistic effect of the compound microbial agent and the dynamic regulation and control of the pH value, the elemental sulfur element in the sulfur cake is subjected to an oxidation process and is combined with a nitrogen source in the system, and the ammonium sulfate-containing organic fertilizer is formed through conversion. Based on the synergistic effect of the sulfur oxidizing bacteria-organic sulfur degrading bacteria-thermophilic actinomycetes complex microbial inoculants, the biochemical conversion rate of sulfur to plant absorbable ammonium sulfate is remarkably increased.

The application discloses a monolithic water-resistant and sulfur-resistant CO oxidation catalyst and a preparation method thereof. In one aspect, the application provides a monolithic water-resistant and sulfur-resistant CO oxidation catalyst, wherein the mass ratio of components of the catalyst comprises 2.5-12 parts of CuO x , 0.5-5 parts of SnO2, 0.3-3 parts of AgO x , 40-50 parts of TiO2, 10-20 parts of CeO2-TiO2 composite powder, 2-10 parts of a binder and 12-18 parts of a reinforcing agent; and the catalyst has a honeycomb structure. In another aspect, the application provides a preparation method of the monolithic water-resistant and sulfur-resistant CO oxidation catalyst. The application does not use rare noble metals, has better catalytic effect, relatively lower optimal catalytic temperature and excellent water resistance and sulfur resistance.

The invention belongs to the technical field of nitrogen pollution treatment, and discloses a denitrification filter system for reducing sulfate and hydrogen sulfide under the driving of sulfur oxidation reduction and disproportionated bacteria and an operation method thereof. The problem of accumulation of by-products sulfate and hydrogen sulfide in the sulfur autotrophic denitrification process is effectively solved. The denitrification filter system comprises a water inlet unit, an up-flow continuous flow reactor, a real-time monitoring and regulating unit, an aeration unit, a dosing unit and a water outlet unit, the interior of the up-flow continuous flow reactor is divided into a buffer area and a reaction area from bottom to top, the buffer area is filled with activated carbon, the surface of the activated carbon is loaded with metal oxide, the reaction area is filled with a sulfur-based filter material, and the surface of the sulfur-based filter material is used for enriching sulfur redox and disproportionated flora; the real-time monitoring and regulation unit can dynamically adjust operation parameters of related equipment according to preset control logic and real-time feedback. According to the invention, during deep denitrification, synergistic removal of sulfate and hydrogen sulfide is realized, and the system realizes zero-carbon denitrification and has high desulfurization efficiency.

To provide a denitrification treatment system that suppresses a generation of deposits such as gypsum that is formed on a surface of a denitrification pellet.SOLUTION: There is provided a denitrification treatment system 11 that performs denitrification treatment to remove nitrogen from wastewater containing nitrate nitrogen, etc., the system including: a treatment tank 13 including a pellet layer 25 in which pellets of a carrier for supporting sulfur-oxidizing bacteria that perform denitrification treatment are layered, and wastewater introduced from outside is passed through the pellet layer 25 to produce treated water from which nitrogen has been removed; an inlet pipe 18 connected to the treatment tank 13 for introducing wastewater from the outside to an upstream side of the denitrification treatment of the pellet layer 25; a circulation pipe 15 for passing treated water from a downstream side of the denitrification treatment of the pellet layer 25 to an upstream side of the denitrification treatment of the pellet layer; and an electromagnetic field generator 17 provided in at least one of the inlet pipe 18 and the circulation pipe 15, to generate a magnetic field and an electric field inside the pipe.SELECTED DRAWING: Figure 1

The invention relates to a halomonas alkali with an efficient sulfur oxidation function, a culture method and application of the halomonas alkali, the halomonas alkali is named as DS-4, the preservation number of the halomonas alkali is CGMCC (China General Microbiological Culture Collection Center) No.: 30669, and the preservation date of the halomonas alkali is May 17, 2024. According to the present invention, the optimal desulfurization conditions of the halomonas alkalicola DS-4, the sulfide removal characteristics of the halomonas alkalicola DS-4, and the product of the halomonas alkalicola DS-4 are researched; the optimal desulfurization condition of the strain is that the temperature is 35 DEG C, the pH value is 8-9, the rotating speed of a shaking table is 180rpm, and the inoculation amount is controlled so that the culture medium OD600 is 0.08. Under the optimum condition, the removal effect on 1200mg / L sulfide is up to 99.93% after the strain is cultured for 11h. According to removal and main metabolite analysis of 400 mg / L sulfide, the removal rate of S < 2-> reaches 99.9% within 5 h, the main product is elemental sulfur, and the yield of the elemental sulfur reaches up to 75.55%. The strain has a wide application prospect in the aspects of treatment of hydrogen sulfide-containing gas and sulfide-containing wastewater and sulfur resource recovery.

The application discloses a preparation method of a biological composite filler capable of generating polysulfides to realize deep denitrification, and belongs to the technical field of sewage biological treatment. The filler takes sulfur and limestone as a matrix, adds cysteine and mixes uniformly, simultaneously supplements trace elements, is subjected to bonding and foaming treatment, and is finally shaped to obtain the biological composite filler capable of generating polysulfides to realize deep denitrification. The absorption and utilization of elemental sulfur by sulfur autotrophic bacteria are mediated by extracellular substances. Under the condition of elemental sulfur, substances containing mercapto groups are highly expressed and differentially expressed. They activate elemental sulfur and biologically modify sulfur to generate polysulfides as soluble intermediates for bacteria to utilize. The biological composite filler prepared by the application has the advantages that a small amount of cysteine is added to promote the formation of organic polysulfides, improve the solubility of sulfur in sewage, be beneficial to the absorption of sulfur source by sulfur-oxidizing bacteria and the formation of EPS, shorten the domestication time of microorganisms, and improve the denitrification capacity.

This disclosure relates to methods of forming elemental sulfur and hydrogen gas from hydrogen sulfide. The disclosed methods include contacting a solution including hydrogen sulfide with an electrode for hydrogen evolution and an electrode for sulfur oxidation.

A fertilizer composition comprising a plurality of one or more live sulfur oxidation microorganisms, elemental sulfur, and a solid fertilizer comprising nitrogen, phosphorous, and / or potassium and optionally talc and methods for producing and using the same.

The invention discloses a chemoautotrophic plant Annwoodia The invention relates to a sulfur oxidizing bacteria strain and its application, belonging to the technical field of microorganisms and environmental protection. The strain is named Annwoodia sp. C03, with a deposit number of GDMCC No: 65042. Thiobacillaceae Corey Annwoodia A new species of the genus was added Annwoodia The strain C03 can bio-oxidize sulfide, elemental sulfur, thiosulfate, thiocyanate, sulfite, tetrathionate and other reduced sulfides under aerobic conditions. In addition, the strain C03 can also simultaneously carry out sulfur oxidation and denitrification under hypoxic conditions, that is, the strain has good application value in the treatment of wastewater containing reduced sulfides.