54 results about "Strong salt" patented technology

The invention relates to the technical field of agricultural microorganisms, in particular to trichoderma asperellum and application thereof. The Trichoderma asperellum disclosed by the invention is preserved in the China Center for Type Culture Collection on October 25, 2023, and the preservation number of the Trichoderma asperellum is CCTCC (China Center for Type Culture Collection) NO: M20232021. The trichoderma asperellum provided by the invention has a relatively strong inhibition effect on onion specialized fusarium oxysporum, and has a good prevention and treatment effect on onion root rot; the fertilizer has strong salt and alkali resistance, can promote growth of onions under a salinization condition, improve growth traits and fruit quality of the onions, increase the yield of the onions, improve physicochemical properties of salinized soil and change abundance of microflora of the soil; in addition, the disinfectant is safe and convenient to use, non-toxic, harmless, non-corrosive, harmless to human, livestock, animals and plants, free of environmental pollution and ecological in safety.

Disclosed are a strong salt-resistant self-degradation plugging agent for water-based drilling fluid and a preparation method therefor. The preparation method includes: modifying unsaturated polyhydroxyalkanoate by using 2-acrylamide-2-methylpropanesulfonic acid to prepare modified polyhydroxyalkanoate; modifying lignin by using an ammonium halide salt to prepare quaternized lignin; and melting and blending the quaternized lignin and the modified polyhydroxyalkanoate to obtain the strong salt-resistant self-degradation plugging agent for water-based drilling fluid. The preparation method is mature and reliable, and is suitable for industrial production. The plugging agent has strong salt resistance and good stability, and has a degradation rate less than 15% within 7 days, which can effectively plug micron-sized fractures in shale formations. Meanwhile, the plugging agent may be directly added to the water-based drilling fluid, and has little effect on the rheology. With addition of the plugging agent, the high-temperature and high-pressure filtration loss of the drilling fluid is significantly reduced.

The invention relates to the field of fertilizers, in particular to a preparation method of a compound fertilizer with water and fertilizer retention and salt and alkali resistance functions, which comprises the following steps: step 1, preparing aminated starch; step 2, preparing N-acryloyl glycyl chloride; step 3, preparing a starch / acryloyl glycinamide compound; step 4, weighing the starch / acryloyl glycinamide compound, adding the compound into deionized water, then adding acrylic acid and acrylamide, and carrying out copolymerization to obtain coating layer feed liquid; and step 5, spraying the coating layer feed liquid on the surfaces of the fertilizer particle cores in a spraying manner to obtain the compound fertilizer. According to the compound fertilizer prepared by the invention, a coated compound fertilizer is prepared by taking a fertilizer particle inner core as an inner core and taking a material prepared from modified starch as a coating layer. The compound fertilizer prepared by the invention has relatively strong water and fertilizer retention and slow release properties, and can play a relatively strong salt and alkali resistance function.

The present invention relates to the field of surfactant technology, disclosing a compound with surfactant functionality, a surfactant, and a method for preparing the same. The compound has the structure represented by Formula (A). The surfactant provided by the present invention exhibits strong salt tolerance and excellent solubilization. Furthermore, the preparation method provided by the present invention utilizes amino-functionalized cyclodextrin as a raw material, producing the product through a two-step reaction, offering the advantages of simplicity and high efficiency. #imgabs0#

The present invention relates to the technical field of emulsifying viscosity reduction, and discloses a super heavy oil emulsifying viscosity reducer composition and its application, a super heavy oil emulsifying viscosity reducer and its preparation method and application; the viscosity reducer composition contains the following components stored independently or in combination of two or more: anionic surfactant, amphoteric surfactant and water; the anionic surfactant is an anionic oligomeric surfactant based on cyclodextrin modification, and the anionic surfactant has the structure shown in formula (A). The viscosity reducer provided by the present invention has good emulsifying viscosity reduction effect on super heavy oil under weak shear action, and has strong salt resistance, and is suitable for emulsifying viscosity reduction of super heavy oil in formation water containing high calcium and magnesium ions. In addition, the viscosity reducer has good biocompatibility, is easy to biodegradable, does not produce secondary pollution, and has less damage to the formation.

The invention belongs to the technical field of electrolytic aluminum ash treatment, and discloses an electrolytic aluminum ash harmless treatment device which comprises a raw material preparation reaction system and an ore pulp treatment system, and the raw material preparation reaction system comprises a semi-finished product ash bin, a first calcium chloride tank, a raw material saline water tank, a batching tank and a reaction tank; the ore pulp treatment system comprises a vacuum belt filter, a light salt brine tank, a second calcium chloride tank, a strong salt brine tank, an alkali liquor tank, a sediment slurry tank, an air compressor and an MVR evaporator. According to the method, soluble calcium salt is obtained by utilizing the fly ash and diluted hydrochloric acid, calcium chloride reacts with fluoride in the electrolytic aluminum ash to obtain calcium fluoride sediment, most fluorine is removed, the phenomena of corrosion and scaling blockage of an MVR pipeline are greatly reduced, the service life of equipment is prolonged, meanwhile, the salt content is increased through light salt brine circulation enrichment, and the MVR energy consumption is reduced.

The application belongs to the technical field of building materials, and discloses a carbonized gamma-C2S modified salt-storing slow-release ceramsite as well as a preparation method and application thereof. First, a porous ceramsite is treated with an inhibitor and a surfactant to obtain active ceramsite; then the active ceramsite is soaked in a saturated solution of deicing salt to obtain salt-storing ceramsite; then the salt-storing ceramsite is treated with a temperature-sensitive agent to obtain salt-storing slow-release ceramsite; finally, the salt-storing slow-release ceramsite is modified by carbonized gamma-C2S to form a core-shell structure with the salt-storing slow-release ceramsite as the core and the carbonized gamma-C2S as the shell, thereby obtaining the carbonized gamma-C2S modified salt-storing slow-release ceramsite. The ceramsite prepared by the application has the comprehensive performance of lightweight, high strength, strong salt-storing capacity and good slow-release effect, and when applied to asphalt pavement materials, can play a long-acting deicing effect and ensure good road performance, thereby having a wide application prospect in regions with much snow in winter in China.

The invention discloses rosa rugosa LAT6, which is preserved in the China General Microbiological Culture Collection Center (CGMCC), the preservation number of the rosa rugosa LAT6 is CGMCC No.33523, and the preservation date of the rosa rugosa LAT6 is February 13, 2025. The invention further discloses the application of the rosa rugosa LAT6 in promoting plant growth under salt stress. A preparation method of the rosa rugosa LAT6 comprises the following steps: step S1, collecting a sample; step S2, strain separation; and S3, strain identification. According to the invention, plant rhizosphere microorganisms growing in saline-alkali soil are separated, a strain LAT6 with strong salt and alkali resistance and a growth-promoting effect is screened out, molecular biology identification shows that the strain LAT6 is rose kocuria, and tests prove that the strain LAT6 still has a remarkable growth-promoting effect on plants under the condition of saline-alkali adversity stress; and a feasible solution is provided for improving the salt tolerance of plants.

The invention provides a plateau saline-alkaline corrosion resistant concrete admixture and a preparation method thereof, and belongs to the technical field of concrete admixtures. The concrete admixture comprises the following raw materials: multilayer graphene oxide, sodium gluconate, sodium silicate, a nano active agent, a polymerization inhibitor, a catalyst, a molecular regulator, an initiator and a reducing agent, and the types of the raw materials are further limited. The coating is not easy to corrode in a specific environment, the service life of a building is further prolonged, the components are environment-friendly, non-toxic and harmless, the preparation process is simple, complex equipment or professional technical guidance is not needed, industrial production and field application are easy, and the coating has a good popularization prospect.

The embodiment of the invention relates to the technical field of heavy anti-corrosion coatings, and discloses a marine facility anti-corrosion protective layer regulation and control method adapting to a strong salt mist environment, and the method comprises the following steps: preparing a self-activation intermediate paint, and applying the self-activation intermediate paint between a primer and a finish paint to form a composite protective layer; the core of the self-activation intermediate paint is that a main agent of the self-activation intermediate paint contains a dual-trigger mineralization precursor, and the precursor is composed of BF4-loaded hydrophobic modified zeolite and zinc phosphate coated water glass particles; when the coating is damaged, the corrosion microenvironment of the damaged area can cooperatively trigger the zeolite to release BF4 <-> to buffer the pH value, and meanwhile, the coated water glass particles are triggered to be dissolved and release silicate ions; the released silicate ions and positive ions in the environment are subjected to in-situ reaction to generate mineralized products, and a damaged area is blocked. The method can actively inhibit corrosion expansion and cathodic disbonding after the coating is damaged, and the long-term reliability and the service life of the protective layer are remarkably improved.

This invention discloses a flocculant for treating fracturing flowback fluid, relating to the field of oilfield wastewater treatment technology. The flocculant comprises modified starch and organic acid. The preparation method of the modified starch includes the following steps: reacting allyl alcohol glycidyl ether with 1,4,7-trimethyldiethylenetriamine; after the reaction, separating and purifying to obtain an intermediate product; taking the intermediate product and dissolving it, adding an alkyl halide to perform a quaternization reaction; after the reaction, separating and purifying to obtain a cationic monomer; taking pregelatinized starch and dispersing it in water, then adding the cationic monomer, acrylamide, and an initiator to perform free radical polymerization; after the reaction, drying to obtain the final product. The flocculant for treating fracturing flowback fluid provided by this invention not only has strong salt resistance, making it suitable for the high-salt environment of fracturing flowback fluid, but also effectively removes oil, turbidity, color, and suspended solids from the fracturing flowback fluid, and has a strong COD removal capacity.

This invention relates to a salt-tolerant and alkali-resistant growth-promoting bacterium, ZIP1309, and its applications, belonging to the field of microbial technology. The strain ZIP1309 was deposited on July 2, 2025, at the China General Microbiological Culture Collection Center (CGMCC), with accession number CGMCC No. 35073. This strain exhibits strong salt and alkali resistance, tolerating environments with a maximum salt concentration of 10% and an alkaline environment at pH 11. It produces indoleacetic acid, siderophores, proteases, amylases, lipases, and cellulases. Furthermore, this strain can promote maize growth in saline-alkali environments with a salt content ≤0.5% and a pH ≤10, demonstrating broad application prospects.

The invention relates to a thick oil viscosity-reducing and oil-displacing composition, an oil-displacing system and application of the thick oil viscosity-reducing and oil-displacing composition. The thick oil viscosity-reducing and oil-displacing composition comprises an amino acid type surfactant, an anionic sulfate type surfactant and water, the viscosity-reducing and oil-displacing composition for the heavy oil disclosed by the invention can remarkably reduce the oil-water interfacial tension, has a relatively good viscosity-reducing effect on the heavy oil under a weak shearing effect, and is relatively high in salt resistance; the oil-displacing agent is compounded with polyacrylamide to obtain an oil-displacing system, the water-oil fluidity ratio can be improved, the oil-displacing efficiency is effectively improved, and the recovery rate of thickened oil is improved.

This invention discloses a microorganism, a microbial agent, and their applications. The microorganism is *Zygosaccharomyces rouxii*, which was deposited on May 27, 2024, at the China General Microbiological Culture Collection Center (CGMCC) with accession number CGMCC No. 30794. The novel *Zygosaccharomyces rouxii* strain obtained by this invention exhibits rapid growth, strong salt and acid tolerance, and a strong ability to metabolize nitrates and nitrites. Food or feed production methods developed using this novel strain and microbial agent demonstrate high salt tolerance, high fermentation efficiency, and a short production cycle, effectively reducing nitrate and nitrite content during fermentation. Fermented foods made using this novel strain are rich in yeast, low in nitrates and nitrites, and are nutritionally healthy with a unique flavor.

The invention discloses a high-temperature and calcium-resistant water-based drilling fluid for ultra-deep shale wells and a preparation method thereof. The raw material components and weight contents are as follows: water: 1000 parts; sodium bentonite: 30-40 parts; cationic polymer coating agent: 2-4 parts; temperature-resistant and calcium-resistant polymer fluid loss reducer: 10-20 parts; clay surface hydration inhibitor: 3-5 parts; sulfonated phenolic resin: 20-30 parts; sulfonated lignite resin: 20-30 parts; low-fluorescence cationic asphalt powder: 30-50 parts; biolubricant: 20-40 parts; solid polyol: 15-25 parts; ultrafine calcium carbonate: 30-50 parts; micro-nano strong plugging agent: 5-15 parts; amphiphilic plugging agent: 10-15 parts; barite: 330-400 parts; and the pH value is adjusted to 9-10. The drilling fluid of the present invention can withstand high temperatures above 200°C, has strong salt and calcium resistance, and can resist calcium chloride pollution by 5%. It can reduce the comprehensive damage of filtrate to easily collapsed formations, improve the pressure bearing capacity of the formation, and meet the requirements of drilling construction.

The present invention relates to a salt-tolerant Bacillus and an application thereof, belonging to the technical field of microbial fertilizers. The salt-tolerant Bacillus was deposited in the General Microbiology Center of the China Culture Collection Administration on July 10, 2024, with a deposit number of CGMCC No. 31260. The strain has strong salt and alkali resistance, and has the ability to dissolve potassium, decompose cellulose, degrade protein, and dissolve organic phosphorus. At the same time, it can antagonize various plant pathogens such as Erwinia persica, Fusarium oxysporum, and Fusarium fujikura. Moreover, the strain can produce a good growth-promoting effect on corn in both salt-free and salt-containing environments, and has a very broad application prospect.

The application relates to a preparation method and application of a low-temperature-resistant ester-based electrolyte. The method comprises the following steps: firstly, dissolving lithium bistrifluoromethylsulfonylimide into a mixed solution of difluoropropionic acid ethyl ester and fluorinated ethylene carbonate to obtain solution A; secondly, dissolving lithium nitrate into ethylene glycol dimethyl ether to obtain solution B; and thirdly, adding solution B into solution A to obtain the low-temperature-resistant ester-based electrolyte. The weak-solvent electrolyte is composed of three solvents and two lithium salts, the carboxylic acid ester has a low melting point and a strong salt-dissolving capacity, the freezing point of the electrolyte can be significantly reduced, the electrolyte still has strong fluidity at low temperature, the migration rate of lithium ions at low temperature is improved, and the low-temperature performance of the battery is improved. The low-temperature-resistant ester-based electrolyte prepared by the application provides valuable insights for the next-generation electrolyte of lithium ion batteries operated under extreme conditions.

A denitrification bacterial agent under high salt and low carbon-nitrogen ratio conditions and application thereof relate to the field of microbial water treatment technology. The bacterial agent is composed of Marinobacterium sp. Marinobacter shengliensis subsp. alexandrii YZC-3 and Stutzeri sp. Stutzerimonas degradans YZC-8, and the preservation numbers are GDMCC NO:68289 and 68290 respectively. The bacterial agent maintains high and stable denitrification activity under the conditions of salinity of 2% to 4% and C / N of 4 to 8, and has strong salt stress resistance. When treating simulated wastewater under the conditions of salinity of 4% and C / N of 4, the total nitrogen removal rate is more than 90%, and when treating actual mariculture tail water, the total nitrogen removal rate is stably maintained at 85% to 93% in long-term operation. The bacterial agent is salt-tolerant, stable in operation, low in cost and environmentally friendly.

The application discloses Vibrio fluvialis JH-3, which is preserved in the Guangdong Microbial Culture Collection Center and has a preservation number of GDMCC NO: 66094. The application also discloses application of the Vibrio fluvialis JH-3 in denitrification and nitrogen removal. The application further discloses a denitrification and nitrogen removal method for salt-containing wastewater, which comprises the following steps: mixing the Vibrio fluvialis JH-3 with salt-containing wastewater to obtain a mixed solution, and culturing to carry out denitrification and nitrogen removal. The Vibrio fluvialis JH-3 screened by the application has strong salt-tolerant denitrification capacity and can be used for biological nitrogen removal of high-salt wastewater.

The invention discloses a kind of strong dispersibility modified graphene oxide nanosheet plugging agent and preparation method thereof, and relates to the technical field of oil and gas field development. The preparation method of the plugging agent comprises the following steps: taking graphene oxide and dispersing evenly, adding sodium ethoxide and chlorinated olefin, then reacting for 6~10h, after the reaction ends, separating and purifying to obtain intermediate; taking intermediate and dispersing evenly, 3-[bis[2-(methacryloyloxy)ethyl](methyl)ammonium]propane-1-sulfonate and the first monomer added later, adding initiator and reacting for 4~8h, after the reaction ends, separating and purifying to obtain. The plugging agent of the present invention, it contains sulfonic acid group and quaternary ammonium group at the same time, so that the plugging agent not only has good dispersion stability, but also has strong adsorption performance in the reservoir, and the plugging performance of the plugging agent of the present invention is stronger; at the same time, the plugging agent of the present invention is also made to have strong salt resistance.

The invention provides an oil-displacing agent for chemical flooding of thickened oil and an oil-displacing effect evaluation method, and belongs to the technical field of oilfield development. The oil-displacing agent for chemical flooding of thickened oil comprises a main surfactant, an auxiliary surfactant, low-carbon alcohol and the balance of water, wherein the main surface active agent is prepared from straight-chain fatty alcohol polyoxyethylene ether, isomeric fatty secondary alcohol polyoxyethylene ether and an anionic surface active agent; the auxiliary surfactant is a methyl glucoside derivative. The oil-displacing agent for chemical flooding of thickened oil is good in emulsification viscosity reduction, capable of effectively reducing interfacial tension, high in salt resistance, resistant to stratum adsorption and good in compatibility. According to the oil displacement effect evaluation method, comprehensive evaluation of the chemical oil displacement agent is achieved, the method is simple, the oil displacement agent with the better comprehensive oil displacement effect can be rapidly screened out, and the method has important practical significance on development of water-drive heavy oil reservoirs.

The present invention provides a strong salt-resistant self-degradable plugging agent for water-based drilling fluid and a preparation method thereof, which belongs to the field of oilfield chemistry. The preparation method of the present invention includes: using 2-acrylamide-2-methylpropanesulfonic acid to modify unsaturated polyhydroxyalkanoate to prepare modified polyhydroxyalkanoate; using ammonium halide to modify lignin to prepare quaternized lignin; quaternized lignin and modified polyhydroxyalkanoate are melt-blended to obtain a strong salt-resistant self-degradable plugging agent for water-based drilling fluid. The preparation method of the present invention is mature and reliable, suitable for industrial production, the plugging agent of the present invention is strong salt-resistant, has good stability, and has a degradation rate of less than 15% in 7 days, and can effectively plug micron-level cracks in shale formations; at the same time, the plugging agent of the present invention can be directly added to the water-based drilling fluid, and has little effect on the rheology of the water-based drilling fluid. After adding the plugging agent, the high-temperature and high-pressure filtration loss of the drilling fluid is significantly reduced.

The utility model relates to the technical field of concrete piles, in particular to a reinforced concrete pile with strong salt and alkali resistance, which comprises a concrete pile base body and graphene modified foam, spiral stirrups are vertically and uniformly distributed in the concrete pile base body, and a framework is sleeved on the outer walls of the spiral stirrups. A plurality of groups of spiral stirrups are arranged on the framework, joint binding steel wires are arranged at the joints of the framework and the plurality of groups of spiral stirrups, transverse reinforcing stirrups and longitudinal reinforcing stirrups are arranged on the upper surface and the lower surface of the framework respectively, the transverse reinforcing stirrups and the longitudinal reinforcing stirrups are distributed vertically, and side grooves are formed in the periphery of the outer portion of the concrete pile base body. Graphene modified foam is clamped on the inner sides of the side grooves; the problems that after an existing concrete pile is prefabricated and formed in the prior art, chloride ions can penetrate through the concrete pile due to salt and alkali in the environment, so that the chloride ions make contact with internal steel bars, a passive film is damaged, electrochemical corrosion is caused, and the service life of a soil pile is shortened are solved.

The invention relates to the technical field of oilfield sewage treatment, and particularly discloses a composite water clarifier for oilfield sewage treatment and a preparation method of the composite water clarifier. The invention relates to a composite water clarifier for oilfield sewage treatment. The composite water clarifier is prepared from the following raw materials: dual modified polyacrylamide, an imidazoline quaternary ammonium salt grafted copolymer, a scale inhibitor, an adsorbent, dodecyl dimethyl betaine, a coagulant aid and deionized water, the double modified polyacrylamide is obtained by performing double modification on polyacrylamide by using 2, 3-epoxypropyl trimethyl ammonium chloride and a hydrophobic monomer; the imidazoline quaternary ammonium salt grafted copolymer is a grafted copolymer of imidazoline quaternary ammonium salt, acrylamide and acrylamide-2-methylpropanesulfonic acid. The composite water clarifier can be used for treating high-salt and high-oil sewage generated in the middle and later periods of oilfield exploitation, has the advantages of being high in salt resistance, thorough in demulsification and good in flocculation effect, can efficiently remove oil and suspended solids, ensures that effluent reaches the standard, and meets the complex sewage treatment requirements of an oilfield.

This invention discloses a composite sealant for metal artifacts and its preparation and application method, comprising a base sealant and a top sealant. The base sealant comprises 20-40 parts by weight of a film-forming substance, 0.5-5 parts by weight of a composite corrosion inhibitor, and 55-79 parts by weight of a first solvent. The composite corrosion inhibitor comprises benzotriazole and 2-mercaptobenzothiazole, with a mass ratio of benzotriazole to 2-mercaptobenzothiazole of 1:0.2-1:5. The top sealant comprises 20-40 parts by weight of a film-forming substance, 1-10 parts by weight of nano-silica, 0.5-5 parts by weight of a hydrophobic modifier, and 45-78 parts by weight of a second solvent. This invention achieves efficient and durable protection for metal artifacts through the synergistic combination of benzotriazole and 2-mercaptobenzothiazole in the base sealant, exhibiting advantages such as good water resistance, strong salt spray corrosion resistance, high transparency, and good reversibility.

The embodiment of the present application relates to the technical field of heavy-duty coating, and discloses a marine facility corrosion protection layer regulation and control method suitable for strong salt spray environment, which comprises preparing a self-activated intermediate paint and applying it between a primer and a topcoat to form a composite protective layer; the core is that a double-triggered mineralization precursor is contained in the main agent of the self-activated intermediate paint, the precursor is composed of BF4 ‑ loaded hydrophobic modified zeolite and zinc phosphate coated water glass microparticles; when the coating is damaged, the corrosion microenvironment of the damaged area can synergistically trigger the zeolite to release BF4 ‑ to buffer the pH, at the same time trigger the dissolution of the coated water glass microparticles and release silicate ions; the released silicate ions react in situ with cations in the environment to generate mineralization products, plugging the damaged area. The present application can actively inhibit corrosion propagation and cathodic delamination after coating damage, significantly improving the long-term reliability and service life of the protective layer.

The present invention discloses a denitrification and alkali-removing liquid autotrophic denitrification bacteria-containing material and its preparation method and application, the material contains a bacterial liquid including LH-B.0040 alkaliphilic halomonas with a deposit number of CGMCC NO: 16324, etc.; further comprising a sulfur-containing material, an iron-containing material, a colloidal material and trace elements. The material can quickly remove nitrates and nitrites and alkalinity in high-alkalinity salt-free or high-salt nitrogen-containing wastewater, without adding any carbon source, that is, to achieve the removal of total nitrogen, with high denitrification efficiency, strong salt tolerance, and alkali removal, low application cost, and application is not affected by the original system's own carbon source content. It can be added to any denitrification system, is simple to use, has a wide range of application processes, and can achieve extreme denitrification. It is suitable for the treatment of various high-alkalinity salt-free or high-salt nitrogen-containing wastewaters and has broad application prospects.

The application relates to a high-salt wastewater free silicon targeted adsorbent as well as a preparation method and application thereof, and belongs to the field of industrial high-salt wastewater functional adsorbent and preparation. The adsorbent is based on an ordered mesoporous-microporous multi-level pore carbon prepared by a molten salt method, boron atoms are in-situ doped in the skeleton, magnesium-aluminum hydroxyl oxides are limitedly grown in the pores, and catechol functional groups are covalently grafted on the surface. The application discards the defects of traditional soft templates and high-melting-point salt processes, utilizes a chloride binary eutectic salt to construct a regular multi-level pore structure in one step, and has the advantages of ordered pores, smooth mass transfer and uniform site distribution. The preparation process has strong repeatability and is suitable for industrial mass production. The product is accurately aimed at the removal scene of more than 20% of high-salt mother liquor neutral molecular monosilicic acid, and solves the problem of deep silicon removal in a high-salt system. The adsorbent has the advantages of stable structure, strong salt interference resistance, high selectivity and excellent regeneration performance, can remove residual free silicon, prevents the fouling and blockage of rear-end equipment, and guarantees the stable operation of a high-salt wastewater zero-discharge system.

The application discloses an active self-sustaining liquid denitrification bacteria-containing material and belongs to the technical field of wastewater biological denitrification. The bacteria-containing material comprises mixed bacteria liquid, sulfur-containing material, iron-containing material, colloidal material, plant fiber powder and trace elements, and the mixed bacteria liquid contains Halomonas titanicae LH-B.0026. The material can quickly remove nitrate and nitrite in low-alkalinity salt-free or high-salt nitrogen-containing wastewater, realizes self-balancing of multi-element electron cooperation, removes total nitrogen without supplement of any carbon source, has high denitrification efficiency, strong salt tolerance, low application cost, and is not affected by the carbon source content of an original system, can be added into any denitrification system, is simple to use, has wide application process range, can realize extreme denitrification, and is suitable for treatment of various salt-free or high-salt nitrogen-containing wastewater.

The present invention discloses a salt-alkali tolerant Aeromonas strain BM-B and its application in promoting plant growth. This strain belongs to Aeromonas bivalvium and was deposited at the China Center for Type Culture Collection on November 22, 2023. This strain has strong salt and alkali tolerance characteristics. The NaCl concentration it can tolerate for growth is 1-10% (w / v), and the pH value it can tolerate is 7.0-9.0. It has the ability to produce metabolites such as indoleacetic acid, indolepyruvic acid, betaine, choline, isoleucine, valine, tyrosine, proline, and tryptophan. Moreover, under both salt-free stress and salt stress conditions, it can promote plant growth and improve plant salt resistance.