16 results about "Inorganic nitrogen" patented technology

The invention belongs to the technical field of biology, and particularly relates to Meyerozyma caribba XX2120, and the preservation number of the Meyerozyma caribba XX2120 is GDMCC No: 67777. The invention further relates to a preparation method of the Meyerozyma caribba XX2120. The strain is obtained by taking saccharomycetes X2120 as a starting strain, carrying out ARTP mutagenesis treatment and screening, has relatively strong acid resistance, relatively high salt stress resistance and certain alcohol resistance and aldehyde resistance, can effectively utilize monosaccharide, disaccharide and trisaccharide, has a wide utilization range on carbohydrate and has a relatively good utilization rate on inorganic nitrogen. Moreover, the strain can be used for producing mycoprotein through liquid fermentation by taking Luzhou-flavor distillers' grains as a raw material, and also can be used for performing solid fermentation on the Luzhou-flavor distillers' grains, so that the true protein content of the distillers' grains is increased, the nutritional value of the distillers' grains is improved, and the recycling of distillers' grain resources is effectively promoted.

This invention provides an electrochemical removal device for inorganic nitrogen in pond aquaculture effluent and its application. The device has an anode and a cathode at its two ends, with multiple sets of anion exchange membranes and cation exchange membranes alternately arranged from the anode to the cathode, forming a concentration chamber and a denitrification chamber in sequence, starting and ending with the concentration chamber. The concentration chamber containing the anode and cathode is referred to as the anode chamber and cathode chamber, respectively. In the denitrification chamber, nitrate, nitrite, and ammonium ions in the pond aquaculture effluent migrate to the concentration chamber, cathode chamber, and anode chamber under electrodialysis, resulting in a rapid decrease in ion concentration in the effluent, which is then directly discharged. The cathode is loaded with a copper-based metal catalyst, which can electrocatalytically reduce nitrate and nitrite nitrogen to nitrogen gas. The anode is loaded with a copper-based oxide or hydroxide catalyst, which can electrocatalytically oxidize ammonia nitrogen to nitrogen gas without the need for active chlorine, thus solving the adverse effect of the lack of chloride ions in pond effluent on ammonia nitrogen conversion.

A low-temperature-resistant heterotrophic nitrification and aerobic denitrification bacteria is used for wastewater denitrification method, relates to a kind of biological bacteria for wastewater denitrification method, the bacteria is Pseudomonas umsongensis BK17, belongs to Pseudomonas, is preserved in China typical culture preservation center, and the preservation number is CCTCC M 20242924, and the preservation date is December 27, 2024.The strain is a heterotrophic nitrification-aerobic denitrification bacteria, can efficiently remove inorganic nitrogen pollution in water body, and still has good denitrification performance under low temperature stress, and has strong low temperature tolerance.The strain can efficiently treat nitrogen-containing wastewater at 10 DEG C, and the removal efficiency can reach more than 99%.In the inorganic nitrogen pollution treatment and application of various water bodies such as domestic sewage in cold regions of China, it has great potential.

The present application relates to the field of wastewater treatment, and particularly relates to a method for advanced denitrification of low carbon-nitrogen ratio wastewater based on short-cut nitrification and denitrification and anaerobic ammonia oxidation, which establishes an activated sludge bioaugmentation system by adding biochar immobilized ZB403 strain into an SBR activated sludge system, and domesticates the activated sludge bioaugmentation system by adjusting the component and content of simulated wastewater and optimizing the operation conditions of the bioaugmentation system, and optimizes the biological community structure in the system. The activated sludge bioaugmentation system is used for treating low carbon-nitrogen ratio wastewater, the inorganic nitrogen removal rate is above 99%, the COD removal rate is above 97%, and the sludge yield coefficient Yobs is 0.27-0.29 kgVSS / kgCOD.

The utility model discloses a kind of resourceization pretreatment systems of livestock and poultry manure, including in the raw material pool for storing livestock and poultry manure is sequentially connected with soaking pool, grating pool, sand water separator, screening machine by pipeline, there is grinder in the screen of screening machine, its discharge port is connected with the feed inlet of screening machine, forming the circulation loop of screening and grinding, first fermentation device, second fermentation device and third fermentation device are sequentially connected in the under-screen material discharge end of screening machine. In the utility model, under the joint action of each device, the fermentation period of livestock and poultry manure can be effectively shortened, the fermentation effect of livestock and poultry manure can be effectively improved, and more organic matter in livestock and poultry manure can be converted into organic nitrogen and inorganic nitrogen, so that livestock and poultry manure can be efficiently converted into biogas and fermentation liquid which can be resourcefully utilized, with the advantages of high fermentation efficiency, good fermentation effect, good comprehensive utilization rate, etc., conducive to realizing harmless and resourceful treatment of livestock and poultry manure.

The present application belongs to the field of microalgae biotechnology, microalgae culture regulation and high-value lipid bio-manufacturing, and specifically relates to a method for improving microalgae biomass and eicosapentaenoic acid (EPA) yield by regulating amino acids, which takes microalgae capable of synthesizing EPA as a culture object, adds exogenous amino acids or amino acid combinations to the culture system under non-stress culture conditions containing sufficient inorganic nitrogen source, regulates photosynthesis, growth metabolism and lipid synthesis process of the microalgae, and simultaneously improves microalgae biomass and EPA volumetric yield; by adding specific exogenous amino acids or amino acid combinations under the condition of sufficient nutrition culture, the present application realizes synchronous promotion of microalgae growth and EPA accumulation. Different from traditional methods of relying on stress such as nitrogen deficiency to induce lipid accumulation, the present application can improve microalgae biomass, photosynthetic performance, pigment yield and EPA volumetric yield without significantly inhibiting cell growth and photosynthetic activity.

This invention belongs to the field of environmental monitoring technology and discloses a remote sensing inversion method for dissolved inorganic nitrogen and silicate in estuaries based on salinity synergy. The method includes the following steps: S1. During a field survey in the land-sea interaction zone of the estuary, remote sensing reflectance, salinity, and nutrient data are collected simultaneously. The measured hyperspectral reflectance is simulated as the equivalent reflectance of the satellite band using the spectral response function of the target satellite, which is used to construct the training and validation datasets for the model. S2. A nonlinear inversion model of remote sensing reflectance and salinity is established, and a nutrient mixture model of salinity and nutrients is constructed. The training dataset is used for model training. S3. The satellite remote sensing reflectance data of the estuarine area to be predicted is input into the trained nonlinear inversion model and combined with the nutrient mixture model to generate the spatial distribution of DIN concentration and DSi concentration in the estuarine area. This method achieves high-precision remote sensing inversion prediction of DIN concentration and dissolved silicate DSi concentration in the estuarine area.

This invention belongs to the field of agricultural ecological cultivation and soil ecological regulation technology, and discloses a method for reducing nitrogen and stabilizing maize yield by utilizing the synergistic effect of earthworms and nitrogen application. This invention establishes a cultivation method that can stably achieve nitrogen reduction and stable maize yield under field conditions by combining earthworm inoculation, nitrogen-limited basal application, and dynamic monitoring and regulation of soil inorganic nitrogen. Under the conditions of 220 kg N / ha nitrogen application, earthworm inoculation, and dynamic regulation, maize yield increased by 5.45% compared to the higher nitrogen application treatment, nitrogen fertilizer utilization rate increased by 15 percentage points, and soil inorganic nitrogen accumulation was significantly reduced. This invention overcomes the technical bias that "nitrogen reduction inevitably leads to yield reduction" and provides an operable bio-chemical synergistic solution for reducing fertilizer use and increasing efficiency.

The present application relates to the field of slow-release compound fertilizer preparation, in particular to a green organic compound fertilizer and a preparation method thereof.The green organic compound fertilizer comprises an inner core, the inner core being a fertilizer base particle containing organic matter and inorganic nitrogen, phosphorus and potassium; a coating layer, the coating layer being coated on the surface of the inner core, the coating layer being formed by cross-linking and solidification of a coating liquid and a solidification liquid on the surface of the inner core; the coating liquid comprising an aqueous solution of a lignin-polypeptide graft copolymer and a borate, the lignin-polypeptide graft copolymer being formed by connecting carboxymethylized alkali lignin and an amino-rich polypeptide or a polyaspartic acid derivative through an amide bond; the solidification liquid being an aqueous solution containing a metal ion cross-linking agent; in the coating layer, the lignin-polypeptide graft copolymer and the borate form a borate ester bond, and the lignin-polypeptide graft copolymer and the metal ion cross-linking agent form a metal coordination bond.The present application effectively avoids the secondary pollution problem caused by the degradation of traditional high-molecular chemical resin coating materials to the soil.

This invention relates to a method for treating high-concentration inorganic nitrogen wastewater using a mixed culture of *Paragonimus* strains wg2 and wg1, belonging to the field of resource and environmental microbiology. This invention utilizes the co-culture of strains wg2 and wg1 to treat simulated wastewater, primarily exploring the effect of the mixed strains wg2 and wg1 on NO2 under anoxic conditions. ‑ -N, NO3 ‑ The study investigated the nitrogen removal capacity of nitrite-nitrogen (N), the optimal ratio of mixed bacteria, and the nitrogen removal performance of the mixed bacteria in treating simulated wastewater. Results showed that *Paragonimus* strains wg2 and wg1 acted synergistically in a mixed culture system, effectively addressing both nitrite accumulation and efficient nitrate degradation, demonstrating high nitrogen removal capacity. This study provides important practical guidance for the development of biological nitrogen-removing agents that simultaneously remove nitrite and nitrate.

This invention belongs to the field of agricultural microbial applications, specifically a multifunctional bacterium W1. It can induce the formation of a cementitious substance by hydrolyzing urea and amino acids to produce alkali, and simultaneously secretes extracellular polysaccharides and the plant growth-promoting substance indoleacetic acid. Furthermore, it exhibits a synergistic effect with hydrothermal charcoal. It was deposited on October 12, 2024, at the China General Microbiological Culture Collection Center, and the proposed classification name is *Defective Shortwave Monoclonal*. Brevundimonas diminuta The study, numbered CGMCC No.32186, used Bacterium W1, hydrothermal charcoal, inorganic nitrogen fertilizer, human and animal manure, and calcium source as soil conditioners for sandy soil and verified them by planting maize. It showed that the conditioners could promote the cementation of soil particles in sandy soil, increase the number of mechanical and water-stable large aggregates, increase the organic matter content of sandy soil, enhance the water and fertilizer retention capacity of sandy soil, enhance the drought resistance and nutrient absorption capacity of maize, and thus increase maize yield.

This invention relates to the field of agricultural management technology, specifically to an agricultural soil information management system. The system includes: a data analysis module, a temperature difference determination module, a channel identification module, a correlation analysis module, and a management generation module. In this invention, multi-depth temperature information and inorganic nitrogen voltage signals from farmland soil profiles are collected to form a data set with time and depth identifiers. Based on changes in vertical temperature gradients, continuous depth thermal migration zones are identified. Further, the accumulated temperature difference results are screened to determine active microbial migration channels. Simultaneously, correlation analysis is conducted by combining time-varying temperature sequences with inorganic nitrogen concentration differences. Lag evolution step lengths are extracted, and historical temperature changes are traced back to form thermal migration memory variables. Finally, the nutrient evolution rate is calculated based on the current inorganic nitrogen concentration, and the information at set depth points is updated. This improves the ability to identify soil nutrient changes and enhances the supporting role of farmland information management data in nutrient regulation decisions.

The application discloses a heterotrophic nitrification and aerobic denitrification bacteria for treating high-salt and high-ammonia-nitrogen wastewater, and relates to a high-salt and high-ammonia-nitrogen wastewater treatment method. Halomonas sp The bacteria strain is Halomonas sp. Halomonas , named MY-11, belongs to the genus Halomonas, is preserved in the China Center for Type Culture Collection, has a preservation number of CCTCC M 20242923 and a preservation date of December 27, 2024. The bacteria strain is a heterotrophic nitrification and aerobic denitrification bacteria, can efficiently remove inorganic nitrogen pollution in water bodies, has good denitrification performance under high-salt and high-ammonia-nitrogen stress, and has high tolerance to high-salt and high-ammonia-nitrogen. The bacteria strain can efficiently treat nitrogen-containing wastewater under the conditions of 2%-6% salinity and 100 mg / L-400 mg / L ammonia-nitrogen concentration, and the removal efficiency can be higher than 99%. The bacteria strain has great potential in the application of inorganic nitrogen pollution treatment of various water bodies such as breeding and chemical industry wastewater.

The application discloses a kind of high-temperature aerobic composting methods of agricultural and forestry wastes, specific steps are as follows: high-carbon, high-nitrogen agricultural and forestry wastes, inorganic nitrogen source are mixed, the soluble carbon-nitrogen ratio of mixture is adjusted to (5~20):1, inoculates first-stage composite inoculant, is placed in nano intelligent molecular film aerobic composting system and is fermented, implements intelligent ventilation program.Second-stage composite inoculant is supplemented in composting high-temperature stage, and third-stage composite inoculant is supplemented in cooling stage.The application supplements different composite inoculants in different stages, improves the degradation efficiency of heap;Intelligent air blowing is carried out in combination with sensor data and air blowing system, and a plurality of parameters are detected in real time, soluble carbon-nitrogen ratio is fitted and calculated, and is controlled between (5~20):1.The highest proportion of forestry waste in the application can reach 90%, composting rotting cycle can be shortened to 40~60 days, lignocellulose degradation rate is >50%, organic matter is 30-60%, total nutrient is >2%, seed germination index is >90%, and can be used as high-quality organic fertilizer or substrate raw material.

The present invention enables organically modifying a starting particle with a variety of molecular structures, such as AlN, TiN, Si3N4, or SiC, uniformly on the entire surface of the starting particle using a common method to easily provide an organically modified inorganic fine particle with further improved dispersibility in a solvent.The present invention is a method for producing an organically modified inorganic fine particle. The method includes: forming an oxide layer, an oxyhydroxide layer, and / or a hydroxide layer on a surface of at least one or more kinds of starting particle selected from inorganic nitrides, inorganic carbides, inorganic sulfides, and insoluble salts; and organically modifying the starting particle, on which the oxide layer, the oxyhydroxide layer, and / or the hydroxide layer is formed, in a reaction field of a supercritical, subcritical, or gas phase aqueous solvent to obtain an organically modified inorganic fine particle.

The application belongs to the technical field of water pollution treatment and ecological environment restoration, and relates to development and application of microbial functional resources, and particularly relates to a water self-grown nitrogen-fixing bacteria G12, a bacterial agent, a bacterial bag and application thereof. Ralstonia pickettii The water self-grown nitrogen-fixing bacteria G12 is classified and named as The bacteria is preserved in China Center for Type Culture Collection, located at Wuhan University, No. 299, Bayi Road, Wuchang District, Wuhan City, and has a preservation number of CCTCC NO: M 20251602 and a preservation date of July 14, 2025. The strain has wide environmental adaptability, can maintain nitrogenase activity under low-oxygen, weak-light and trace nutrient element fluctuation conditions, and has a self-limiting regulation mechanism of nitrogen-fixing activity in the application process. After the inorganic nitrogen content rises, the nitrogenase activity decreases, which helps to maintain the ecological balance of nitrogen in the system and reduce the risk of secondary pollution.