424 results about "Fulvic acid" patented technology

The invention provides a special charcoal-based slow-release fertilizer for sandy soil as well as a preparation method and application thereof, and belongs to the technical field of fertilizers. The special charcoal-based slow-release fertilizer for the sandy soil is prepared from amino modified biomass charcoal, urea, urea formaldehyde, monoammonium phosphate, potassium sulfate, polyglutamic acid, fulvic acid, clay, attapulgite, a compound microbial agent and sodium alginate. The compound microbial agent is prepared from halomonas (ACCC 11681), bacillus subtilis (ACCC 60429) and bacillus mucilaginosus (ACCC 10094), and the compound microbial agent is prepared from bacillus subtilis (ACCC 60429) and bacillus mucilaginosus (ACCC 10094). The invention further provides a preparation method and application of the special charcoal-based slow-release fertilizer for the sandy soil. The special charcoal-based slow-release fertilizer for the sandy soil can remarkably improve the water and fertilizer retention capacity of the sandy soil, improve the farmland productivity of the sandy soil, save fertilizer and water input and improve the yield and quality of crops.

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

The invention relates to the technical field of production of potassium fulvate, in particular to a process for producing edible alcohol and co-producing potassium fulvate by fermenting beet. The method comprises the following steps: performing coarse crushing and fine crushing on beet to form slurry, adding squeezed water, and collecting into an adjusting tank; transferring the slurry into a conversion tank for biological conversion, then carrying out solid-liquid separation treatment to obtain juice and wet residues, and squeezing the wet residues; mixing the juice with the wine mother liquor, performing two-stage fermentation to obtain fermentation liquor, and concentrating the fermentation liquor to obtain edible alcohol and waste liquor; distilling the waste liquid and adding a fulvic acid transforming agent for fermentative degradation, and then evaporating to remove moisture and concentrating to generate a concentrated solution; lime milk and the concentrated solution are uniformly mixed and stirred for neutralization, and the neutralized concentrated solution is dehydrated and dried to generate potassium fulvic acid dry powder. According to the method disclosed by the invention, polysaccharide substances in the beet are subjected to sufficient enzymolysis by utilizing the biotransformation agent, and sugar contained in the beet is sufficiently released, so that the utilization rate of beet sugar is increased.

The invention provides a microbial composite remediation liquid organic fertilizer and a preparation method thereof, and aims to solve the problems of single function, limited pollution abatement capability and the like of a traditional liquid fertilizer. Through synergism of strains of bacillus velezensis, bacillus methylotrophicus, pseudomonas putida and methanogenic archaea, recycling of agricultural wastes such as straw and mushroom dreg compost and decomposition, extraction of humic acid through enzymolysis and a formula of green additives (mineral source potassium fulvate, sophorolipid and the like), chemical passivation of heavy metals, pesticide degradation and soil improvement are realized; and dynamic fermentation control and membrane separation processes are combined, so that the method has the characteristics of efficient repair and low-carbon sustainability, and an integrated solution is provided for pollution treatment of complex farmlands.

The invention discloses a method for in-situ passivation of available cadmium in soil, and belongs to the technical field of heavy metal contaminated soil treatment. According to the method, the fulvic acid with the molecular weight being 100 kDa or above is applied to the acid mining area soil with the pH being 2-4.5 according to the adding amount of 3-20 gC / kg, the low-concentration cadmium pollution of the source being 4 mg / kg or below is removed, the concentration of effective-state cadmium is reduced, the cost is saved, the natural substance fulvic acid is used as the remediation agent, operation is easy and convenient, and the method is suitable for remediation of various mining area soil.

The invention relates to the technical field of aqueous zinc ion batteries, in particular to an aqueous zinc ion battery electrolyte as well as a preparation method and application thereof. The invention provides an aqueous zinc ion battery electrolyte. The aqueous zinc ion battery electrolyte comprises soluble zinc salt and fulvic acid, and the concentration of the fulvic acid in the electrolyte is 0.01-50 g / L; wherein rich oxygen-containing functional groups contained in fulvic acid molecules can serve as strong coordination sites to be combined with Zn < 2 + > to generate coordination, so that the migration rate of zinc ions is effectively reduced, and uniform deposition of the zinc ions on the surface of the negative electrode is promoted; meanwhile, direct contact between water molecules and the zinc negative electrode can be reduced by utilizing a molecular interface layer formed by fulvic acid molecules on the surface of the zinc negative electrode, so that water-induced side reaction can be relieved. And the cycle stability of the battery is improved through the effects. In addition, the fulvic acid is wide in source, low in cost and environment-friendly, the production cost of the water-based zinc ion battery is reduced, and large-scale application of the water-based zinc ion battery is promoted.

The invention discloses a soil-improving growth-promoting modified lignin soil conditioner and a preparation method thereof, and belongs to the technical field of high polymer materials and soil improvement. The modified lignin soil conditioner comprises an agent A, an agent B and an agent C, the agent A is a cationic modified lignin polymer and is prepared by graft copolymerization of lignosulfonate and a cationic monomer in a free radical initiation mode; the agent B is lignin controlled-release particles and is prepared by wrapping an amino acid amphoteric regulator in the cationic modified lignin polymer and another negative charge natural polymer through electrostatic intercalation self-assembly; the agent C is at least one of citric acid, lactic acid, itaconic acid, fulvic acid, wood vinegar, maleic acid, maleic anhydride and polyacrylic acid. The soil conditioner disclosed by the invention has the advantages of low cost, environment friendliness and efficient repairing performance, and an innovative solution is provided for agricultural soil improvement.

The invention relates to the technical field of agriculture, and discloses a synergistic technology for repairing soil and promoting plant stem cells by using modified amino active groups. Comprising the following steps: modifying an amino acid compound, namely modifying active groups in amino acid and fulvic acid, so that the active groups have a synergistic effect with cellulase, hemicellulase, urease, phosphatase, chitinase, beta-glucanase, superoxide dismutase, peroxidase and catalase; through the strong chelation of the modified amino active groups and heavy metal ions in soil, the bio-availability and mobility of heavy metals can be effectively reduced, for example, the chelation removal rate of cadmium, lead and other heavy metals can reach 40% or above, the heavy metal contaminated soil is repaired, the soil structure is improved, the content of organic matters in the soil is increased, and the pH value of the soil is adjusted; the acidified or alkalized soil is gradually restored to a pH range suitable for plant growth, and the water and fertilizer retention capability of the soil is improved.

The invention belongs to the technical field of agricultural fertilizers, and particularly relates to a high-efficiency yield-increasing liquid fertilizer containing enzymolysis nereis and a preparation method thereof.The method comprises the steps that the nereis is cleaned and smashed, subjected to freeze-thaw cycle pretreatment and then subjected to enzymolysis through a compound protease preparation containing protease and chitinase under the alkalescence condition, and the liquid fertilizer containing the enzymolysis nereis and the chitinase is obtained; carrying out solid-liquid separation on the obtained enzymatic hydrolysate to obtain enzymatic clam worm liquid; the preparation method comprises the following steps: mixing urea, a phosphorus-potassium fertilizer, trace elements, potassium fulvate and polyaspartic acid in a preparation tank, and then adding an N-carbamoyl-L-glutamic acid-chitosan grafted copolymer and selenocysteine-alginic acid nanoparticles to obtain a nutrient solution; and finally, mixing the enzymolysis nereis solution with the nutrient solution and the plant growth regulator to obtain a finished product. Active substances in the nereis are fully released through a biological enzymolysis technology, the prepared liquid fertilizer has the functions of nutrition supply, physiological regulation and soil improvement, crop growth can be remarkably promoted, the yield can be remarkably increased, and high-value utilization of marine biological resources is achieved.

The invention relates to the technical field of novel fertilizers, and particularly discloses an organic water-soluble fertilizer as well as a preparation method and application thereof. The organic water-soluble fertilizer provided by the invention is prepared from the following components: kitchen waste organic mother liquor, an anti-corrosion synergist, a stress-resistant synergist, a growth-promoting synergist, a dispersing agent and polyethylene glycol-400, the kitchen waste organic mother liquor is prepared by sequentially carrying out wet and hot hydrolysis, amylase enzymolysis, protease enzymolysis and lipase enzymolysis on a kitchen waste solid phase and a kitchen waste liquid phase; the preservative synergist is prepared by mixing a natamycin solution, tea polyphenol and chitosan oligosaccharide; the stress-resistant synergist is prepared by mixing complex enzyme glycoside, a plantain herb extract and gamma-aminobutyric acid; the growth promoting synergist is formed by mixing mineral source potassium fulvate and gluconic acid. The organic water-soluble fertilizer prepared by the invention has good corrosion resistance and product stability, has a good growth promoting effect on crops, and can reduce the number of diseased plants with successive cropping obstacles and improve the yield of the crops in a soil environment with successive cropping obstacles.

The invention belongs to the technical field of biomass resource utilization, and particularly relates to a production method for preparing high-activity humic acid based on corncobs, and the high-activity humic acid is prepared from the following raw materials in parts by weight: 10 parts of corncobs, 20-50 parts of DES and 40-80 parts of an oxidation substrate, the method comprises the following steps: performing microwave pretreatment on corncobs by using DES to realize activation and molecular depolymerization of humic acid precursor substances, catalyzing humic acid molecules to perform condensation reconstruction through an oxidation matrix and an electromagnetic heating process, and realizing one-step low-temperature preparation of high-activity humic acid and fulvic acid in a single reaction system. The production efficiency and the raw material utilization rate of agricultural and forestry waste recycling are greatly improved.

The invention discloses a special slow-release fertilizer for wheat in saline-alkali soil as well as a preparation method and application thereof, and relates to the technical field of slow-release fertilizers. The fertilizer contains various functional substances and a microbial agent, and specifically contains the following components in parts by weight: 5-10 parts of urea, 0.5-3 parts of potassium chloride, 5-10 parts of diammonium phosphate, 2-5 parts of triple superphosphate, 0.5-1 part of magnesium sulfate, 0.5-1 part of zinc sulfate, 0.2-0.5 part of boric acid, 0.2-0.4 part of resveratrol, 0.5-1 part of alginic acid, 0.3-0.5 part of fulvic acid and 1.0 part of a microbial mixed agent, and 0.1 to 0.3 part of a surfactant. According to the fertilizer, all the raw material components are reasonably compounded, the physicochemical properties of saline-alkali soil can be effectively improved while the growth requirement of wheat in the saline-alkali soil is met, and meanwhile the utilization rate of the fertilizer can be increased through the slow release effect, and damage to the environment is reduced.

The invention belongs to the field of field remediation functional materials, and particularly relates to a preparation method and application of a chelating iron agent for remediation of organic contaminated soil. The preparation method comprises the following steps: firstly, preparing a chelating agent aqueous solution, adding ferrite under a continuous stirring condition to carry out chelation reaction, then adding organic acid to carry out stabilization treatment, finally adding an activating auxiliary agent fulvic acid, uniformly mixing, and adjusting the pH value of the solution to a required value to obtain the chelating iron agent. The chelating iron agent can be used for activating an oxidizing agent during in-situ / ex-situ remediation of an organic polluted site, and has the advantages that the chelating iron agent is environment-friendly, the ferrous ion stability is good, the contact reaction with the oxidizing agent is mild and controllable, iron precipitates are not easy to form, and the growth and metabolic activity of indigenous organisms are stimulated.

The invention provides a waste potato-derived fulvic acid slow-release full-degradable mulching film as well as a preparation method and application thereof, and belongs to the technical field of agricultural environment. Waste potatoes are prepared into a solution, then the solution is compounded with potassium sulfate, tartaric acid and fulvic acid according to a certain proportion to form a mixed solution, and the waste potato source fulvic acid slow-release type fully-degradable mulching film is prepared through uniform spreading and microwave irradiation. According to the invention, resource utilization of the waste potatoes is realized; meanwhile, the prepared mulching film is good in mechanical performance, and the actual application requirement is met. The prepared mulching film has good heat preservation and soil moisture conservation effects, fulvic acid is slowly released, and the film-fertilizer dual-function effect is achieved. In addition, after the mulching film is degraded, soil components are improved.

The application discloses a soil remediation agent suitable for saline-alkali soil and a preparation method thereof, and belongs to the technical field of soil remediation. The soil remediation agent suitable for saline-alkali soil is composed of A component and B component, wherein the A component is a fermentation product after fresh fruit peel and sugar are fermented in water; and the B component is potassium fulvate, zeolite powder and biomass charcoal. The soil remediation agent takes discarded fruit peel as raw material, can change waste into treasure, and other raw materials are also natural raw materials, is green and environment-friendly, and can obviously reduce the pH value and salt content of saline-alkali soil. The preparation method is simple, does not need expensive equipment, and has a larger popularization and application prospect.

The present application provides a kind of prevention and control method of green moss in water lily planting pool, specifically belongs to water quality control technical field.The prevention and control method of green moss in water lily planting pool described in the present application includes the following steps: before planting water lily, water injection, water level is controlled at 15~20cm, copper sulfate is applied to kill green moss and its spores, keep water body not to flow during disinfection;After disinfection, apply sodium thiosulfate, and plant water lily;After planting water lily, keep replenishing water, control water level to 40~50cm, when green moss first outbreak, apply mineral fulvic acid potassium and composite bacillus;Subsequent green moss outbreak, apply mineral fulvic acid potassium, or apply mineral fulvic acid potassium and composite bacillus.The prevention and control method described in the present application is safe and efficient, which can quickly and effectively remove green moss without inhibiting the growth of water lily, and also does not affect the harvest of water lily.

The application discloses a saline-alkali soil improvement liquid fertilizer and a preparation method and application thereof, and relates to the technical field of liquid fertilizers.The saline-alkali soil improvement liquid fertilizer is prepared by taking acid pulping waste liquid rich in lignin sulfonate as a skeleton, taking fulvic acid and amino acid as functional monomers, preparing a terpolymer through a free radical graft copolymerization reaction, and then adding sodium sulfinate into the terpolymer to improve the content of sulfonic acid groups in the terpolymer.The liquid fertilizer has the structural improvement ability of lignin sulfonate, the buffer complexing ability of fulvic acid and the nutritional activity of amino acid, and can realize the synergistic improvement of saline-alkali soil from three dimensions of chemical alkali reduction, physical salt removal and structure improvement.

This invention relates to the field of fertilizer technology, specifically to a disease-resistant microbial compound fertilizer and its preparation method. The disease-resistant microbial compound fertilizer comprises the following raw materials in parts by weight: 10-15 parts nitrogen fertilizer, 10-20 parts phosphorus fertilizer, 6-10 parts potassium fertilizer, 50-70 parts fermented organic matter, 8-12 parts fertilizer efficiency enhancer, 5-8 parts disease-resistant composition, and 6-10 parts chitosan oligosaccharide. The disease-resistant composition is a mixture of sodium selenite and potassium humate in a weight ratio of 1:1.5-2.5. The microbial compound fertilizer prepared by this invention not only achieves a combination of rapid and long-lasting effects, improving fertilizer utilization, but also increases organic matter, activates fixed phosphorus and potassium elements in the soil, and improves the micro-ecological environment. Furthermore, through the synergistic effect of Trichoderma harzianum inoculum, Paecilomyces lilacinus, the disease-resistant composition, and chitosan oligosaccharide, it exhibits good inhibitory effects on soil-borne diseases and some foliar diseases, promoting robust crop growth and improving both crop yield and quality.

This invention discloses an in-situ three-dimensional bioremediation method for slightly polluted water bodies. The method involves collecting a mud-water mixture from the water body to be treated, enriching and culturing it, and collecting the settled sludge. Culture medium II is added to the settled sludge for acclimatization and cultivation to prepare a biological agent. This biological agent is then added to a mixed solution of polyvinyl alcohol-hydrated calcium silicate-fulvic acid (PVA-CSH-FA) or PVA-modified zeolite-FA to prepare an immobilized biological carrier that can slowly release or adsorb calcium ions from the water. Calcium peroxide packing is also prepared to provide oxygen. The immobilized biological carrier packing and calcium peroxide packing are respectively fixed in the upper and lower layers of an ecological sedimentation bed, which is then placed in the slightly polluted water body to achieve in-situ three-dimensional bioremediation. The calcium-precipitating bacterial biological agent obtained through enrichment and acclimatization in this invention, when immobilized and mixed with the carrier material, efficiently and simultaneously removes pollutants such as nitrogen, phosphorus, organic matter, and heavy metals from slightly polluted water bodies.

The present invention provides a seaweed fertilizer material that allows for easy and inexpensive fertilization and supplemental fertilization of seaweed, as well as enabling the strengthening and reuse of cultivation ropes, a seaweed cultivation facility equipped with this material, a method for manufacturing the seaweed fertilizer material, and a method for cultivating seaweed. [Solution] The seaweed fertilizer material 1 according to the present invention is a seaweed fertilizer material 1 for fertilizing seaweed, and contains raw rubber and shell powder obtained by grinding the shells of marine organisms into powder, and is formed in the form of a sheet or string. The shell powder may be powder from sea urchin shells, and may further contain iron fulvic acid.

Provided herein are compositions and methods to improve plant resistance to abiotic and biotic stress, thereby improving crop yield. Provided herein are compositions including zinc, copper, and an acid, where the acid is selected from citric acid, sulfuric acid, oxalic acid, humic acid, fulvic acid, boric acid, acetic acid, and a combination thereof. Certain embodiments optionally include ammonium sulfate. Compositions described herein have plant priming activity where the plant's defenses against abiotic and biotic stress are boosted.

The application discloses a compound fertilizer for promoting cotton high yield and a preparation method thereof, relates to the technical field of cotton fertilizer, and comprises first mother liquor A, second mother liquor B and third mother liquor C which are prepared, stored and packaged separately; the first mother liquor A contains urea phosphate, monoammonium phosphate, anhydrous citric acid, malic acid and manganese sulfate monohydrate; the second mother liquor B contains commercial 11-37-0 liquid ammonium polyphosphate, ammonium salt type polyaspartic acid solution, purified fulvic acid clear liquid and tri-potassium citrate; and the third mother liquor C is a mixed system of polyol complex state boron clear pre-liquid and medium complex state zinc pre-liquid. The application can improve the effective state stability of phosphorus, zinc and boron, reduce the risks of precipitation fouling and dripping head blockage, alleviate the risks of local salt peak and root injury in the seedling stage, promote the uniform emergence and young root growth of cotton, and improve the yield.

The invention belongs to the field of rambutan cultivation, and particularly relates to a special compound fertilizer for rambutan and application thereof. According to the special compound fertilizer for the rambutan, disclosed by the invention, the millettia speciosa champ residues, the bagasse, the mimosa pudica and the fish meal are used as substrates, bacillus velezensis HAB-2 is added for fermentation to prepare an extract, and then fulvic acid, brassinolide and naphthylacetic acid are added to finally prepare the compound fertilizer, so that the growth of rambutan seedlings can be remarkably promoted; on the premise that healthy growth of rambutan seedlings is guaranteed, the seedling raising period of the rambutan is shortened, and the method has important promoting significance on cultivation of the rambutan.

The invention belongs to the field of agricultural biology, and particularly discloses a fulvic acid extrusion granulation microbial agent and a production process thereof, and the fulvic acid extrusion granulation microbial agent comprises the following components in parts by weight: 76-107 parts of an inner core and 24-37 parts of a shell; the inner core comprises 30-45 parts of ultrasonic activated fulvic acid, 8-12 parts of heat-resistant composite microbial powder, 15-20 parts of light calcium carbonate, 3-5 parts of molasses and 20-25 parts of attapulgite; the shell comprises 5-8 parts of a heat-sensitive microbial agent, 4-6 parts of a composite protective agent, 3-5 parts of cold-soluble modified starch, 2-3 parts of sodium alginate and 10-15 parts of fulvic acid fine powder; the heat-sensitive bacteria are independently arranged on the shell layer, the normal-temperature centrifugal coating and powder lamination process is adopted, the cell protection effect of the composite protective agent is matched, the processing survival rate of the heat-sensitive bacteria is greatly improved, and meanwhile, the cold-soluble modified starch-sodium alginate barrier layer of the shell ensures the viable bacteria retention rate of the heat-sensitive bacteria during long-time storage and transportation.

The application discloses a special leaching agent for organic matter and heavy metal compound contaminated soil and a preparation method thereof, relates to the technical field of leaching agents for compound contaminated soil and preparation thereof, and the preparation steps are as follows: first, carboxyl-modified fulvic acid is prepared, a mineral source fulvic acid is taken to prepare a suspension, high-purity nitrogen is introduced to remove oxygen, and then ammonium persulfate initiator is added; after water bath heating, acrylic acid monomer is uniformly and slowly added for reaction; after the reaction is completed, the system pH is adjusted; after dialysis and impurity removal, freeze-drying is carried out to obtain modified fulvic acid with an acrylic acid grafting rate of 15% to 30%; and the modified fulvic acid is taken to prepare a phosphate buffer suspension. The application improves the number of active functional groups of fulvic acid through acrylic acid grafting modification, greatly enhances the heavy metal chelation and polycyclic aromatic hydrocarbon solubilization capacity, and covalently crosslinks functional bacteria on the fulvic acid carrier, so that the functional bacteria can be adapted to different acid-base values of contaminated sites and are suitable for soil remediation of various compound contaminated sites.

The application discloses a method for removing magnesium from phosphate ore by reverse flotation and application, and comprises the following steps: S1, crushing, screening, grading and grinding calcium-magnesium-containing phosphate ore to obtain phosphate ore powder; S2, adding water to the phosphate ore powder to adjust the slurry, and then adjusting the pH value to 4.5-9.0 to obtain a mineral slurry; S3, adding an inhibitor solution and a collector solution into the mineral slurry in sequence, and performing flotation to remove impurities to obtain tailings and phosphate concentrate; the inhibitor solution is a fulvic acid and / or fulvic acid salt solution; the application has the advantages of no phosphorus, no pollution, small dosage, mild applicable pH range, no corrosion damage to the flotation equipment and the like by using the inhibitor fulvic acid or the salt thereof to perform the flotation, and the removal of impurities of the calcium-magnesium-containing phosphate ore can be realized only by using the short process of the reverse flotation, and the flotation and impurity removal effect is good.

This invention provides an iron-carbon based catalyst, its preparation method, and its application, relating to the field of wastewater treatment technology. The preparation method includes: S1, adding bamboo powder and humic acid to an alkaline solution and stirring to obtain a carbon precursor; S2, adding the carbon precursor to a glucose solution and carrying out a hydrothermal reaction to obtain a carbon complex; S3, adding an active iron source and an auxiliary agent to a humic acid solution to obtain a complex solution; S4, adding the carbon complex to the complex solution and performing gradient calcination under an inert atmosphere to obtain the iron-carbon based catalyst. The entire preparation process of this invention requires no external binder or pore-forming agent, reduces sintering temperature, and has low cost. The prepared sea urchin-type iron-carbon based catalyst exhibits extremely strong iron-carbon bonding, is not easily detached, and has high stability. Its structure provides a large number of active sites, and the radial nanospikes maximize the specific surface area, greatly promoting Fe... 3+ / Fe 2+ It can recycle and increase the yield of •OH, has strong catalytic activity, and can efficiently degrade recalcitrant organic pollutants.

The application discloses a method for producing yellow fermentation acid slow-release organic fertilizer by using tylosin bacterial residue, and the method comprises the following steps: crushing the tylosin bacterial residue into powder by using a cell wall breaking machine; adding gamma-manganese dioxide and lignite in sequence, stirring and mixing uniformly, and fully contacting and reacting; irradiating and treating the obtained mixed system by using a high-energy electron beam to obtain yellow fermentation acid organic fertilizer; and compounding the obtained product with diatomite, and granulating after cooling to obtain the yellow fermentation acid slow-release organic fertilizer. The harmless treatment and resource utilization of the tylosin bacterial residue are realized, the product meets the actual production and application requirements, the product has good fertilizer efficiency, the residual antibiotics are removed synchronously, and the product has the dual functions of fertilizer efficiency and antibiotic removal.

The invention relates to a composite material for strengthening pyrite passivation by using Cu < 2 + > and a preparation method, and the material is prepared by compounding layered double hydroxide and fulvic acid through a coprecipitation method. The LDHs-FA composite material is applied to surface passivation of the pyrite for the first time, inherent Cu < 2 + > in acid mine wastewater is adsorbed, meanwhile, compactness and stability of a passivation layer on the surface of the pyrite are synergistically enhanced, and waste is treated with waste; physical barrier, chemical inhibition, heavy metal adsorption and fixation and pH responsive self-repairing are integrated, and integration from passive treatment to active prevention and control and self-repairing is achieved; the preparation method is simple, environment-friendly in raw material, low in cost and suitable for large-scale production and application; after LDHs-FA and Cu < 2 + > are cooperated for treatment, the passivation efficiency is improved to 91.19% from 68.93%, the efficiency amplification reaches 32.29%, and an efficient and intelligent new way is provided for mine environment pollution source treatment and heavy metal resource control.