16 results about "Soluble nitrogen" patented technology

The invention relates to a process for composting organic waste comprising the following steps: - applying a particle size sorting (8) to raw compost from a previous composting cycle in order to separate said raw compost into at least a compost fraction (10) and rejects (9), said rejects (9) having a particle size greater than that of the compost fraction; - applying a treatment (11) to the rejects (9) so as to reduce the concentration of soluble nitrogen in the treated rejects (3); - preparing a composting mixture (1) by mixing organic waste (2) with structuring agents (5) comprising the treated rejects (3); - piling the composting mixture (1) thus prepared in a composting unit (6) and composting it. Figure to be published with the abstract: Fig. 1

The invention discloses an AI intelligent regulation and control facility rotten vegetable processing method, and aims to solve the problems that existing rotten vegetable processing equipment is easy to block due to fixed parameters and rotten degree judgment is disjointed with plant nutrition standards, the method comprises the following steps: acquiring rotten vegetable material multi-view images through a visual acquisition device, calculating a fiber winding index in combination with a physical correction action, and identifying a category label; the crushing particle size and the squeezing rotating speed are regulated and controlled according to category labels and winding index differences, and loss of water-soluble nitrogen and potassium nutrients is reduced while fiber winding is prevented; conveying the dehydrated rotten vegetable leaves to an aerobic fermentation device, collecting a compost surface image, inputting the compost surface image into a decomposition degree identification model associated with a plant nutrition index, outputting a decomposition degree probability value, triggering verification sampling when the decomposition degree probability value is greater than 0.95 for three continuous times, and judging a fermentation end point and starting discharging if a seed germination index is greater than or equal to 95%. Pretreatment anti-blocking, fermentation end point judgment intelligence and plant nutrition adaptability are achieved, and the nutrient retention rate and quality stability of the waste vegetable organic fertilizer are improved.

The invention discloses a low-cost ozone long-term storage process with fertilizer efficiency, and belongs to the technical field of ozone storage. The invention not only can effectively solve the problem of ozone storage, but also has the dual functions of killing insects and fertilizing in ecological agriculture. According to the invention, ozone and potassium nitrate are combined to generate a stable ozone compound, so that the problem that ozone is easy to decompose at normal temperature is solved. The prepared ozone compound has good stability at normal temperature, can be stored for a long time, can be applied to agricultural production as a water-soluble nitrogen-potassium compound fertilizer and a broad-spectrum bactericide, and is used for preventing diseases and insect pests. The method is simple in process flow and suitable for large-scale production; the selected potassium nitrate raw material is low in price and wide in source; compared with conventional bactericides, the ozone compound obtained by the invention does not generate harmful residues in the use process. In conclusion, the ozone storage method provided by the invention has important application value in the fields of ozone storage and agricultural application.

The invention discloses a complex microbial inoculant and biological polysaccharide for flocculent precipitation of aquaculture wastewater and application of the complex microbial inoculant and the biological polysaccharide, and relates to the field of microorganisms, in particular to the complex microbial inoculant and the biological polysaccharide for flocculent precipitation of aquaculture wastewater and application of the biological polysaccharide. The method solves the problems that an existing method for removing suspended solids in aquaculture wastewater is prone to equipment blockage, has no continuous treatment effect and is high in input cost. The complex microbial inoculant disclosed by the invention is prepared from filamentous flocculation fusarium fungi and far-antarctic pseudomonas. The complex microbial inoculant is used for treating aquaculture wastewater, a better flocculation effect is achieved by combining microbial cell structure characteristics and microbial growth and metabolism activities, extracellular polymeric substances generated by denitrifying bacteria adsorb suspended particles and fungal hyphae in water to be directly connected with particulate matter, a larger and more stable flocculating constituent is formed, the flocculation advantages of the two bacteria are played, and the flocculation effect of the two bacteria is improved. The turbidity and the suspended matter concentration of sewage can be reduced, and the soluble nitrogen pollutant concentration in the aquaculture wastewater can be removed.

The invention discloses application of a nitrogen-containing surfactant as a platinum group metal precipitator and a platinum group metal recovery method, and belongs to the technical field of precious metal secondary resource recycling. The method comprises the following steps: adding a water-soluble nitrogen-containing surfactant into an acidic aqueous solution containing platinum group metal ions, carrying out a stirring reaction, standing and settling, and collecting a precipitate by adopting centrifugation or filtration; and then carrying out high-temperature heat treatment in a specific atmosphere to obtain the high-purity platinum group metal elementary substance. The nitrogen-containing surfactant is selected from one or a combination of more of quaternary ammonium salt containing aromatic side chain or short chain alkyl, alkyl quaternary ammonium salt with specific anions, amine oxide type surfactant and betaine type surfactant, and is subjected to ionic association with platinum group metal complex anions and induces aggregation and sedimentation; and high-selectivity capture of ruthenium, rhodium, palladium, osmium, iridium and platinum is realized. The method provided by the invention still has stable precipitation efficiency in a wide acidity range, and can reduce the consumption of the precipitator and the residual noble metal in the tail liquid.

The utility model discloses an efficient denitrification and dephosphorization device for mariculture wastewater. The efficient denitrification and dephosphorization device comprises a culture water tank, a drainage pipe, a valve, a coarse filtering tank, a filtering grating, a connecting water pump and a denitrification and dephosphorization assembly, according to the utility model, soluble nitrogen and phosphorus in a water body are converted into large-particle (20-800mu m) microorganisms and algae biomass by utilizing a biofloc technology, part of large-particle filter clusters are absorbed and utilized by filter-feeding animals, part of phosphate and nitrate in tail water are absorbed by utilizing plants and large algae, and finally, a physical filtering system is utilized to filter the tail water. The residual large-particle floccules are removed by the drum filter, and then the residual large-particle floccules are disinfected and purified by the protein separator and the ozone generator and then return to the high-density circulating aquaculture system, so that the expected removal rate of ammonia nitrogen and nitrite in tail water reaches 60% or above, and the daily water change amount of the high-density circulating aquaculture system with the nitrogen and phosphorus removal component is less than 2%.

The invention belongs to the technical field of microorganisms, and particularly relates to a peoriae paenibacillus ZM1, a fungicide and application, the peoriae paenibacillus ZM1 is preserved in China General Microbiological Culture Collection Center (CGMCC) on May 26, 2025, and the preservation number is CGMCC No.34680. The invention further discloses a preparation method of the peoriae paenibacillus ZM1, the fungicide and application of the peoriae paenibacillus ZM1 and the fungicide. The invention provides a new way for screening excellent strain resources for research and development of microbial fertilizers, restoring degraded desert steppe soil environment and restoring biological functions of a degraded grassland ecosystem. The strain has the functions of fixing nitrogen, dissolving phosphorus, dissolving potassium, producing indoleacetic acid and producing siderophores, can significantly improve the content of alkali-hydrolyzable nitrogen, rapidly available phosphorus and rapidly available potassium in the desert steppe soil of Inner Mongolia, and can significantly promote plant growth.

The invention relates to the technical field of agricultural cultivation, and discloses a space-time nitrogen application method for wine grapes, which comprises the following steps: S1, before germination of the wine grapes, performing soil fertilization, and applying nitrogen fertilizers such as urea and the like; s2, preparing a leaf fertilizer with soluble nitrogen fertilizer such as urea as solute, wherein the concentration is not more than 0.3%; s3, adding an auxiliary agent into the leaf fertilizer; s4, in the morning or evening, the leaf fertilizer is sprayed to leaves of the wine grapes; s5, in a key growth period of the wine grapes, foliage spraying is carried out for three times, and the interval between two adjacent spraying is not less than 9 days. According to the method, the situation that nitrogen is sprayed outside the roots of the wine grapes in the fruit setting period is proposed for the first time, the utilization efficiency of the nitrogen is remarkably improved, and meanwhile the expropriation capacity of the wine grape fruits on the nitrogen fertilizer and the content of nitrogen assimilated by yeast are remarkably improved.

The invention pertains to a method for converting an aqueous stream comprising soluble nitrogen and / or potassium into a solid slow-release fertilizer product, comprising the steps of concentrating the aqueous stream comprising soluble nitrogen and / or potassium, such that at >80% but <95% of the water is removed, to obtain a recovered water fraction and a concentrated aqueous fraction comprising the soluble nitrogen and / or potassium; and absorbing said concentrated aqueous fraction in an organic absorbent material to obtain an organic absorbent loaded with the nitrogen and / or potassium from the concentrated aqueous fraction, thereby obtaining a water fraction and a solid slow-release fertilizer comprising said organic absorbent loaded with the nitrogen and / or potassium from the concentrated aqueous fraction. Also provided is the slow-release fertilizer and a method for soil improvement.

The application provides corn syrup fermentation and application thereof in preparation of water-soluble nitrogen fertilizer, and belongs to the technical field of water-soluble fertilizer.The preparation method of the Rhizopus kind koji provided by the application comprises the following steps: mixing Rhizopus spore suspension and culture medium, and carrying out fermentation culture at 28 DEG C to 40 DEG C for 48 h to 108 h; the culture medium is composed of dry materials and liquid materials, the dry materials are composed of soybean meal and bran, and the liquid materials are composed of glucose mother liquor, corn syrup and water.The preparation method of the Rhizopus kind koji can improve the neutral protease activity in the Rhizopus kind koji, so as to improve the subsequent fermentation efficiency of corn syrup and improve the functional activity of the fermentation product obtained by corn syrup fermentation.The corn syrup fermentation provided by the application can improve the small peptide content in the corn syrup fermentation product.The corn syrup fermentation provided by the application can replace nitrogen fertilizer to promote the growth and development of soybean.

The invention discloses a nitrogen and phosphorus recovery method for acid-insoluble substances in nitrophosphate fertilizer production, which comprises the following steps: (1) conveying the acid-insoluble substances generated in the nitrophosphate fertilizer production process to a repulping washing tank of a desiliconization system, adding washing water for repulping treatment, controlling the repulping temperature at 50-60 DEG C and the retention time at 30-60 minutes; (2) conveying the mixed liquid subjected to re-pulping treatment in the step (1) to a re-pulping filter press through a pump for filtering, and separating to obtain solid-phase residues and filtrate containing nitrogen and phosphorus; (3) introducing the filtrate obtained in the step (2) into a phosphorus-containing sewage buffer tank, and then refluxing to a neutralization system and / or a main line system for producing the nitrophosphate fertilizer; and (4) transferring the solid-phase residue obtained in the step (2) to a silicon-magnesium-calcium workshop, and stacking the solid-phase residue as a raw material of the soil conditioner. The method provided by the invention can avoid the condition of heavy acid mist caused by accumulation of acid-insoluble substances in the prior art, and can further recover soluble nitrogen (N) and phosphorus (P2O5) in the acid-insoluble substances.

The invention provides a saline-alkaline tolerant organic water-soluble fertilizer and a preparation method thereof.The saline-alkaline tolerant organic water-soluble fertilizer is prepared from, by mass, 100 parts of sulfonated-carboxymethylated humic acid Ca / K double salt, 30-150 parts of a water-soluble potassium source, 10-100 parts of a water-soluble nitrogen source, 5-80 parts of a water-soluble phosphorus source, 5-50 parts of compound amino acid powder, 0.1-3 parts of water-soluble ferric salt, 0.1-3 parts of water-soluble manganese salt and 0.1-3 parts of water-soluble zinc salt; 0.1-3 parts of a water-soluble copper salt; 0.1-3 parts of a water-soluble boron source; wherein the sulfonated-carboxymethylated humic acid Ca / K double salt is obtained by firstly carboxymethylating potassium humate, then sulfonating and then carrying out ion exchange through calcium ions. The saline-alkaline tolerant organic water-soluble fertilizer can keep the stable existence form of trace metal elements in a saline-alkaline environment, obviously improve the absorption efficiency of plants on trace elements, and further promote the utilization of plants on a large amount of nutrients, thereby improving the growth performance of crops under saline-alkaline stress.

To provide a liquid nutritional composition that uses only plant-derived protein as a protein source, has high emulsification stability, and possesses a rich, milky flavor. [Solution] A liquid nutritional composition containing (A) a plant protein having a water-soluble nitrogen index (NSI) of 75 or higher and a TCA solubilization rate of 5% or less, and (B) a plant protein having a water-soluble nitrogen index (NSI) of 40 or higher and a TCA solubilization rate of 10% or higher and 20% or less, wherein the total content ratio of component (A) and component (B) is 3% by mass or higher and 14% by mass or lower.

The application provides an assembled fermentation deodorization integrated device, relates to the field of agricultural fermented deodorization of waste vegetables, and comprises a fermentation deodorization box, a funnel (3) in a conical structure is fixedly installed at the lower left end of the inner cavity of the fermentation deodorization box (1), a water tank (4) is fixedly welded on the rear side wall of the fermentation deodorization box (1), a penetrating connecting pipe is installed at the top end of the water tank (4), the waste vegetables are put into the fermentation deodorization box, and after appropriate oxygen fermentation, the remaining waste in the fermentation deodorization box is cleaned again, the soluble nitrogen-containing odor substances are dissolved in the cleaning liquid, the cleaning liquid is collected and mixed with the waste to be fermented again, or is directly used as a fermentation liquid fertilizer, the odor pollution caused by the open and random stacking of the waste is solved, and the problem that the waste vegetables put into the fermentation tank are not processed, and the waste in the fermentation tank is easily fermented to produce odor again after being poured out again is solved.

The present application relates to the technical field of nanomaterial preparation, and particularly relates to a preparation method of water-soluble azacyclo carbene modified gold nanoparticles. 5-ethynyl-1-methyl-1H imidazole is used as a starting compound, polyethylene glycol modified azacyclo carbene imidazole salt is obtained through alkylation and click reaction, then silver complex is generated through reaction of the imidazole salt and silver oxide, metal conversion of the synthesized silver complex with dimethyl sulfur gold chloride is carried out to obtain gold complex, and finally ligand exchange is carried out in an aqueous solution through the gold complex and citric acid modified gold nanoparticles to obtain azacyclo carbene modified gold nanoparticles. The preparation method is simple and fast, has high yield, does not need to add a reducing agent additionally, has the characteristics of green environmental protection, and the target product prepared has high water solubility, good biocompatibility and uniform morphology.

This application provides a salt-alkali tolerant organic water-soluble fertilizer and its preparation method. The salt-alkali tolerant organic water-soluble fertilizer comprises the following raw materials in parts by weight: 100 parts sulfonated-carboxymethylated humic acid Ca / K complex salt, 30-150 parts water-soluble potassium source, 10-100 parts water-soluble nitrogen source, 5-80 parts water-soluble phosphorus source, 5-50 parts compound amino acid powder, 0.1-3 parts water-soluble iron salt, 0.1-3 parts water-soluble manganese salt, 0.1-3 parts water-soluble zinc salt, 0.1-3 parts water-soluble copper salt, and 0.1-3 parts water-soluble boron source; wherein, the sulfonated-carboxymethylated humic acid Ca / K complex salt is obtained by first carboxylating and then sulfonating potassium humate, followed by ion exchange with calcium ions. The aforementioned salt- and alkali-tolerant organic water-soluble fertilizer can maintain the stable existence of trace metal elements in a saline-alkali environment, significantly improve the absorption efficiency of trace elements by plants, and further promote the utilization of macronutrients by plants, thereby improving the growth performance of crops under salt- and alkali stress.