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32results about How to "High in nitrogen and phosphorus" patented technology
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Nitrogen-phosphorus non-point source pollution control and recycling system and method for farmland
ActiveCN106882899AEfficient recyclingReduce nitrogen and phosphorus contentSewerage structuresSoil drainageWater storageFiltration
The invention discloses a nitrogen-phosphorus non-point source pollution control and recycling system and method for a farmland, and relates to the field of agricultural environmental protection. The system comprises: a main ridge arranged around the farmland, branch ridges arranged inside the farmland vertically and horizontally, and an aquatic plant cultivation trench arranged around the main ridge, wherein green plants are cultivated on the main ridge and the branch ridges respectively, and aquatic plants are cultivated in the aquatic plant cultivation trench; multiple pipelines are buried in earth between a water collection facility and the aquatic plant cultivation trench; a filtration adsorption facility is a filtration adsorption tank, and comprises a first buffer area, a filter screen, a nitrogen-phosphorus adsorption material and a second buffer area; a water suction pump is arranged in the first buffer area, and a water pump is arranged in the second buffer area; a water storage facility is a reservoir, and a drain valve is arranged on the water storage facility. According to the nitrogen-phosphorus non-point source pollution control and recycling system and method for the farmland, agricultural non-point source pollution can be better controlled, and nitrogen-phosphorus elements can be effectively recycled.
Owner:INST OF ENVIRONMENT & SUSTAINABLE DEV IN AGRI CHINESE ACADEMY OF AGRI SCI
Method for improving soil fertility of saline-alkali soil by planting sesbania
InactiveCN108012610AImprove fertilityHigh seed yieldFabaceae cultivationSoil-working methodsPorosityAlkali soil
The invention is suitable for the technical field of saline-alkali soil improvement, and provides a method for improving the soil fertility of saline-alkali soil by planting sesbania. The method is characterized by comprising the steps of deep ploughing, irrigation and salt separation, wherein soil turning is carried out, weeds of the saline-alkali soil are removed, a compact soil layer is formedbelow the earth surface, and underground water high in salt content is prevented from moving upwards; sowing and fertilizing, wherein seeds need to be soaked or sand is added for wiping the seeds before sesbania sowing, a single sowing mode is used, phosphorus fertilizer is applied, the yield of sesbania is increased, and the content of nitrogen and phosphorus in sesbania is increased; harvestingand fertilizer retention, wherein after the sesbania is ripe, direct ploughing is conducted, straw and livestock manure can be heaped and applied to serve as base fertilizer or conduct topdressing, stalks need to be cut off, chopped and completely buried in the soil layer to prevent moisture evaporation, after sesbania is turned, the total quantity of water-stable aggregates of soil is increased,the soil volume weight is reduced, the porosity is improved, and the soil can be prevented against salt return. Therefore, the fertility of the saline-alkali soil can be improved, and conditions of the saline-alkali soil for planting crops are improved.
Owner:SHANDONG SHENGJING TOURISM DEV CO LTD
System and method for repairing organic contaminated soil through sludge microwave gasification residues in targeting mode
ActiveCN106694538ARealize capacity reductionUniform pore sizeSludge treatment by pyrolysisByproduct vaporizationSoil treatmentSludge
The invention discloses a system and method for repairing organic contaminated soil through sludge microwave gasification residues in a targeting mode, and belongs to the technical field of contaminated soil repairing. The system comprises a first stirring and mixing device, a gasification reactor, a second stirring and mixing device, a desorption reactor and a screening device. Dewatered sludge is pyrolyzed and carbonized in the gasification reactor to form sludge carbon, through the characteristic of multi-pore adsorption and absorption of microwave assisted heating, the desorption of pollutants in the soil can be effectively promoted in the process of mixing the sludge with the organic contaminated soil, and organic matter in the soil is adsorbed; and in the subsequent microwave heating process of the desorption reactor, the organic matter adsorbed on the sludge carbon is volatilized in a gas form, and the residual sludge carbon returns to the first stirring and mixing device and the second stirring and mixing device to participate in sludge carbonization and organic matter adsorption. Sludge treatment and organic contaminated soil treatment are combined to achieve the purpose of treating waste with waste, the sludge carbon can be recycled after adsorption and desorption, and the cost is lowered.
Owner:浙江博世华环保科技有限公司
Anacardol group-containing nitrogen and phosphorus synergistic flame retardant and preparation method and application
The invention discloses an anacardol group-containing nitrogen and phosphorus synergistic flame retardant and a preparation method and an application. A series of anacardol group-containing nitrogen and phosphorus synergistic flame retardants are obtained by modifying anacardol for synthesizing phenolic resin containing the anacardol group-containing nitrogen and phosphorus synergistic flame retardants, and finally, the phenolic resin is blended and mixed uniformly with other auxiliary agents such as a curing agent, a foaming agent and a surfactant, is poured into a mold, and is cured at a certain temperature to obtain foam. Compared with existing pure phenolic foam, the phenolic foam containing the anacardol group-containing nitrogen and phosphorus synergistic flame retardants not only ismore excellent in flame retardance and mechanical property, but also has the double functions of saving sources and protecting the environment as the flame retardants use anacardol of a biomass source as a raw material.
Owner:INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY +1
Domestication method of nostoc and application thereof
InactiveCN102010828AImprove fertilityImprove abilityOther chemical processesUnicellular algaeEcological environmentWater source
The invention discloses a domestication method of nostoc and application thereof. The domestication method comprises the following steps of: preparing a specific culture medium; carrying out salt tolerance domestication, nitrogen and phosphorus content reduction domestication, domestication of adaptability to water to be treated, and the like on screened nostoc species; carrying out step-by-step amplification culture; then leading the nostoc species into a saline and alkaline land, wherein the nostoc is propagated in large quantities by utilizing photosynthesis and absorbs and fixes nitrogen and phosphorus elements contained in atmosphere and water sources; and after the nostoc is propagated, draining culture water for the nostoc, wherein the nostoc is deposited in soil and contains a large quantity of elements, i.e. nitrogen, phosphorus, and the like. After primary treatment is carried out by using the domestication method, the nitrogen contained in the soil is increased by 18-21 percent, the phosphorus is increased by 12-14 percent, and full salt content is reduced by 15-18 percent, therefore not only is nutrient element loss caused by a water washing method prevented, but also the hardening of the soil and the secondary pollution to the water sources and environments, which are caused by chemical fertilizer application, are prevented; and in addition, soil fertility is gradually enhanced and soil restoration is accelerated through multi-time treatment, therefore the purpose of improving an ecological environment is finally achieved.
Owner:北京芳能科技有限公司
Carbon-based bio-enzyme fertilizer capable of resisting continuous cropping obstacles of flue-cured tobacco
PendingCN111892455APromote growthImprove stress resistanceFertilizer mixturesContinuous croppingSoil science
The invention belongs to the field of agricultural planting, and particularly relates to a carbon-based bio-enzyme fertilizer capable of resisting continuous cropping obstacles of flue-cured tobacco.The carbon-based bio-enzyme fertilizer comprises an organic fertilizer, biochar and enzymes, wherein the organic fertilizer is composed of cow dung, oil cakes, fungus bags, straw, phosphorus and beneficial bacteria. The carbon-based bio-enzyme fertilizer applied to acid red soil and used for resisting the continuous cropping obstacles of flue-cured tobacco in the invention can provide medium and trace elements required by tobacco growth, adsorb toxic and harmful substances in soil, inhibit the activity of harmful flora in the soil, increase the number of beneficial flora, improve soil fertility and enhances the physical and chemical properties of the soil, and enables the soil to become loose and fertile, thereby improving the disease resistance, yield and quality of tobacco.
Owner:KUNMING UNIV +1
DOPO derivative and preparation method thereof
ActiveCN104610365AAvoid conditionsAvoid the disadvantages of cumbersome preparation stepsGroup 5/15 element organic compoundsOrganic solventDecomposition
The invention discloses a DOPO derivative and a preparation method thereof, and belongs to the technical field of organic synthesis. According to the preparation method disclosed by the invention, a spiral structure is formed by activating a hydrogen bond and phosphonitrile compounds on a DOPO aromatic ring, and is novel and abundant in functional groups. The structural formula of the DOPO derivative disclosed by the invention is specified in the description. A preparation method of the DOPO derivative disclosed by the invention comprises the following steps: 1, mixing 10mmol of DOPO, 1mmol of a catalyst and 10mmol of HCCP, adding 50mL of an organic solvent, and stirring at a room temperature to completely react; 2. pouring a mixture obtained from the step 1 in saturated table salt and stirring, extracting with dichloromethane for three times, mixing extracts and drying with anhydrous magnesium sulphate, concentrating to be dry, and then recrystallizing to obtain the DOPO derivative. The DOPO derivative disclosed by the invention is shorter in reaction route, moderate in experiment conditions and easy to purify, the highest decomposition temperature can achieve about 370 DEG C, and the DOPO derivative can be used as a flame retardant.
Owner:DAQING BRANCH OF HEILONGJIANG ACAD OF SCI
Method of producing biogas by recycling orange peel residue and dehydrated sludge through fermentation
InactiveCN105130149AOvercome secondary pollutionSolve difficult environmental problemsGaseous fuelsWaste based fuelMicroorganismContinuous fermentation
The invention aims to the problem of difficult treatment on orange peel residues and municipal sludge and low recycling utilization rate and discloses a method of producing biogas by recycling orange peel and dehydrated sludge through fermentation. In the method, the orange peel residue and the dehydrated sludge are employed as raw materials to perform anaerobic fermentation, wherein the fermentation pH is regulated through a quick lime supernatant. The method allows continuous fermentation and batch fermentation. In the method, the characters that the orange peel residue is high in organic substance content and the dehydrated sludge is high in nitrogen and phosphorus contents and is abundant in microorganism colonies are fully utilized, thereby not only effectively solves the problems of recycling the orange peel residue and the municipal sludge, but also increasing common fermentation efficiency of the orange peel residue and increasing the utilizability of biogas residue and biogas liquid as fertilizers after common fermentation of the orange peel residue. The method is excellent in economic and environmental benefit.
Owner:CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
Production method for producing organic fertilizer by using cow dung
InactiveCN110156532AThe steps of the production method are simpleHigh organic contentBio-organic fraction processingAnimal corpse fertilisersEcological environmentAdditive ingredient
The production method is suitable for the technical field of organic fertilizers, and provides a production method for producing an organic fertilizer by using cow dung. The production method is simple in steps, and cow dung, waste vegetable leaves and waste animal internal organs are used as main raw materials of the organic fertilizer and are humified under the action of a fermentation bacteriaagent; the cow dung is high is high in organic matter content and low in mineral element content, so that the physical property of viscous soil can be improved, and water permeability and air permeability of the viscous soil can be improved; the waste vegetable leaves contain rich potassium, phosphorus and other microelements, so that on one hand, nutrition is provided for the fermentation bacteria agent, and on the other hand, nutritional ingredients in the organic fertilizer are increased; and the animal internal organs contain a large amount of microorganisms and have a high content of nitrogen and phosphorus, so that humification is further facilitated, and the recycling rate of wastes in the ecological environment is also greatly improved.
Owner:江苏思威博生物科技有限公司
Carbon-based bio-enzyme fertilizer and preparation method thereof
PendingCN111892453AIncreased organic carbon levelsImprove textureSuperphosphatesBio-organic fraction processingBiocharWheat Brans
The invention belongs to the field of agricultural planting, and particularly relates to a carbon-based bio-enzyme fertilizer and a preparation method thereof. The carbon-based bio-enzyme fertilizer comprises an organic fertilizer, biochar, wheat bran, enzymes, molasses and beneficial bacteria, wherein the organic fertilizer comprises organic materials, urea and calcium phosphate. The carbon-basedbio-enzyme fertilizer can increase the organic matter content of soil, promote the growth of microorganisms in soil, increase a total microorganism amount and effective microbial communities in the soil, increase the pH value of the soil and adjust the pH value of the soil; and the carbon-based bio-enzyme fertilizer improves the activity of protease and urease in the soil, so the activity of thesoil is enhanced, soil fertility is improved, soil continuity is maintained, the disease resistance of crops is enhanced, nutrients required by crop growth are provided, the yield of grain crops is increased, and the quality of the grain crops is improved.
Owner:KUNMING UNIV +1
Domestication method for microcoleus vaginatus and application thereof
InactiveCN101979496BImprove fertilityImprove abilityOther chemical processesUnicellular algaeEcological environmentWater source
The invention discloses a domestication method for microcoleus vaginatus and application thereof. The method comprises the following steps of: preparing a special culture medium, performing domestications such as salt tolerance domestication, nitrogen-phosphorus content reducing domestication, adaptability to water to be treated and the like on the screened algae seeds, introducing the algae seeds into a saline-alkali land after gradual amplification culture, propagating a great amount of microcoleus vaginatus by using photosynthesis, wherein the microcoleus vaginatus absorbs and fixes nitrogen and phosphorus elements in the atmosphere and the water source; and draining the microcoleus vaginatus culture water after propagation, and depositing the microcoleus vaginatus in the soil, wherein the microcoleus vaginatus contains a large amount of elements such as nitrogen, phosphorus and the like. After one-time treatment of the method, the nitrogen in the soil is increased by 19 to 22 percent, the phosphorus is increased by 13 to 15 percent, and the full salt quantity is reduced by 25 to 30 percent; and the method avoids nutrient element loss caused by a washing method, avoids hardening of the soil and secondary pollution of the water source and the environment due to the application of fertilizers, can gradually enhance the soil fertility by multiple times of treatment, can accelerate soil recovery, and finally fulfills the purpose of improving the ecological environment.
Owner:北京芳能科技有限公司
Preparation method and use method of panax notoginseng carbon-based bio-enzyme fertilizer
PendingCN111892449AImprove stress resistanceIncrease productionBio-organic fraction processingMicroorganism based treatmentPANAX NOTOGINSENG ROOTEdaphic
The invention belongs to the field of panax notoginseng planting, and particularly relates to a preparation and use method of a panax notoginseng carbon-based bio-enzyme fertilizer. The panax notoginseng carbon-based bio-enzyme fertilizer is composed of an organic fertilizer, biochar and a plant vitality element. The organic fertilizer is composed of pig manure, tobacco powder, an oil cake, a fungus bag, peanut shell powder, ground phosphate rock and beneficial bacteria. According to the prepared panax notoginseng carbon-based bio-enzyme fertilizer and the use method thereof, panax notoginsengplanting soil is improved to the maximum extent, various diseases of panax notoginseng are effectively prevented and controlled, the yield of panax notoginseng is increased, and the quality of panaxnotoginseng is improved. The panax notoginseng carbon-based bio-enzyme fertilizer can provide medium and trace elements required by the growth of panax notoginseng, adsorb toxic and harmful substancesin soil, inhibit the activity of harmful flora in the soil, increase the number of beneficial flora, improve the soil fertility and enhance the physicochemical properties of the soil, and enables thesoil to become loose and fertile, thereby improving the disease resistance, yield and quality of panax notoginseng.
Owner:KUNMING UNIV +1
Method for domesticating cylindrospermum and application thereof
InactiveCN102010827BImprove fertilityImprove abilityOther chemical processesUnicellular algaeAlkali soilEcological environment
Owner:北京芳能科技有限公司
A kind of electroless nickel plating aging solution treatment process
ActiveCN105149610BWon't happenEffective protectionLiquid/solution decomposition chemical coatingElectroless nickelReaction temperature
The invention provides a process for treating chemical nickel-plating ageing solution. The process comprises the following steps: simultaneously adding an antifoaming agent and a reducing agent to a heating reduction tank, adopting steam heating; when the temperature rises to 70-100 DEG C, adding caustic soda flakes to perform a reduction reaction, making the reaction temperature be 70-100 DEG C, making the pH be 12-14, and making the reaction time be 20-30 min; purifying ammonia generated in the reaction process through an ammonia absorption tower, adding polyacrylamide after the reaction is ended, obtaining nickel powder and filtrate through high-speed centrifugation, recycling the nickel powder, adjusting the pH of the filtrate to 5-6 and then performing spraying drying, wherein obtained residue belongs to ordinary solid waste, performing outsourcing processing, and finishing treatment of the chemical nickel-plating ageing solution. The nickel concentration of the process filtrate is measured to be smaller than 5 mg / L, acid is added to regulate the PH of the filtrate to the suitable conditions to perform spraying drying, the dried residue undergoes outsourcing treatment, and the whole process is free of waste water discharge.
Owner:中新联科环境科技(安徽)有限公司
Method for removing and recycling copper from magnesium ammonium phosphate sludge
ActiveCN106435192ASimple processSolve quality problemsPhotography auxillary processesProcess efficiency improvementElectrolysisSludge
The invention discloses a method for removing and recycling copper from magnesium ammonium phosphate sludge and belongs to the field of urban living wastewater and industrial wastewater treatment and recycling. The heavy metal content of obtained magnesium ammonium phosphate sludge exceeds the standard due to low-concentration heavy metal in wastewater. In order to directly apply magnesium ammonium phosphate sludge to a farmland as a fertilizer, the method comprises the following steps: adding concentrated ammonia water and ammonium salt into the magnesium ammonium phosphate sludge comprising copper, mixing in a vibration manner, carrying out vacuum filtration after fully reacting, drying filter residues in the shade so as to obtain purified magnesium ammonium phosphate, carrying out electrolysis on filtrate which is obtained after solid-liquid separation, recycling elementary copper, mixing electrolyte with the magnesium ammonium phosphate containing copper, and realizing recycling. The copper content of the magnesium ammonium phosphate sludge treated by the method meets Control Standards for Pollutants in Agricultural Sludge (GB4282-84). The technology is simple and easy to operate. The problem that the quality of the magnesium ammonium phosphate sludge is reduced due to the existence of the copper in the wastewater is solved. The copper also can be recycled in the elementary form after being separated. Ammonia leach liquor can be recycled, and chemical cost is saved.
Owner:NANJING UNIV
Pig raising waste treatment and comprehensive utilization method
PendingCN112759430AImprove processing efficiencyCarbon nitrogen balanceClimate change adaptationExcrement fertilisersFertilizerWaste treatment
The invention discloses a pig raising waste treatment and comprehensive utilization method, and the method comprises the following steps: taking pig raising waste containing manure, urine and sewage, adding the pig raising waste into a high-temperature anaerobic tank, controlling the temperature at 50-55 DEG C, and fully reacting for 15-30 days; enabling a mixture output from the high-temperature anaerobic tank to enter a sedimentation tank for solid-liquid separation; enabling liquid separated from the sedimentation tank to enter an inoculation tank, enabling bacillus to be inoculated into the inoculation tank, and performing inoculation and mixing; discharging the liquid into a biochemical pool for biochemical treatment; enabling the sewage subjected to biochemical treatment to enter an MBR membrane tank, and adopting an MBR membrane for mud-water separation, wherein effluent can be discharged up to the standard or blended with liquid fertilizer to be reused for irrigation of vegetables, agriculture and greening. The manure and urine are completely mixed and subjected to high-temperature anaerobic fermentation, the carbon nitrogen ratio is more balanced, and the treatment efficiency is higher; the biochemical process is higher in adaptability and can endure severe environments such as high ammonia nitrogen and high salt in the breeding wastewater.
Owner:河南芮耐环境科技有限公司
Application of miR399 in promotion of absorption and utilization of nitrogen and phosphorus and blooming of soybeans
InactiveCN106318946AHigh in nitrogen and phosphorusPromote floweringAngiosperms/flowering plantsDNA/RNA fragmentationSoil scienceTransgenic technology
The invention discloses application of miR399 in the promotion of the absorption and utilization of nitrogen and phosphorus and blooming of soybeans. The miR399 has the functions of regulating and controlling the balance of phosphorus nutrient and blooming of the soybeans. By virtue of overexpression of miR399e / g, the total root length and root surface area can be increased, the contents of nitrogen and phosphorus of the soybeans can be increased, and therefore, the biomass is increased. According to the application, the capacities of absorbing and utilizing nitrogen and phosphorus of leguminous crops can be improved by virtue of a transgenic technique, and the application has important theoretical and practical significances for the adaption of low-phosphorous stress of the soybeans and the revelation of efficient synergy of nitrogen and phosphorus of the leguminous crops.
Owner:SOUTH CHINA AGRI UNIV
A system and method for controlling and recycling nitrogen and phosphorus non-point source pollution in farmland
ActiveCN106882899BEfficient recyclingReduce nitrogen and phosphorus contentSewerage structuresSoil drainageWater storageFarming environment
The invention discloses a nitrogen-phosphorus non-point source pollution control and recycling system and method for a farmland, and relates to the field of agricultural environmental protection. The system comprises: a main ridge arranged around the farmland, branch ridges arranged inside the farmland vertically and horizontally, and an aquatic plant cultivation trench arranged around the main ridge, wherein green plants are cultivated on the main ridge and the branch ridges respectively, and aquatic plants are cultivated in the aquatic plant cultivation trench; multiple pipelines are buried in earth between a water collection facility and the aquatic plant cultivation trench; a filtration adsorption facility is a filtration adsorption tank, and comprises a first buffer area, a filter screen, a nitrogen-phosphorus adsorption material and a second buffer area; a water suction pump is arranged in the first buffer area, and a water pump is arranged in the second buffer area; a water storage facility is a reservoir, and a drain valve is arranged on the water storage facility. According to the nitrogen-phosphorus non-point source pollution control and recycling system and method for the farmland, agricultural non-point source pollution can be better controlled, and nitrogen-phosphorus elements can be effectively recycled.
Owner:INST OF ENVIRONMENT & SUSTAINABLE DEV IN AGRI CHINESE ACADEMY OF AGRI SCI
Livestock and poultry manure mixture organic fertilizer
InactiveCN105367138ANo side effectsHigh in nitrogen and phosphorusClimate change adaptationExcrement fertilisersFiberLivestock manure
The invention discloses a livestock and poultry manure mixture organic fertilizer. The livestock and poultry manure mixture organic fertilizer is characterized by being prepared from, by weight, 1 part of chicken manure, 1 part of duck manure, 0.5-1 part of cow manure, 0.5-0.7 part of pig manure, 0.2-0.5 part of horse manure, 0.8-1.2 parts of tartaric acid, 0.3-0.5 part of acetic acid, 1-2 parts of rice hulls, 1-3 parts of urea, 1-2 parts of saw dust, 3-5 parts of a decomposition agent and 2-3 parts of water. The livestock and poultry manure mixture organic fertilizer has the advantages that biological manure is adopted as main raw materials, and therefore the toxic and side effects of chemical products are avoided; poultry manure and livestock manure are mixed, a cold fertilizer and a hot fertilizer are reasonably proportioned, the high nitrogen and phosphorus content of chicken manure and duck manure and the high fiber content of livestock manure are fully utilized, and therefore the nitrogen and phosphorus content of the generated fertilizer is further improved.
Owner:武汉赛润科技有限公司
A method for removing and recovering copper from magnesium ammonium phosphate sludge
ActiveCN106435192BSimple processSolve quality problemsPhotography auxillary processesProcess efficiency improvementElectrolysisSludge
The invention discloses a method for removing and recycling copper from magnesium ammonium phosphate sludge and belongs to the field of urban living wastewater and industrial wastewater treatment and recycling. The heavy metal content of obtained magnesium ammonium phosphate sludge exceeds the standard due to low-concentration heavy metal in wastewater. In order to directly apply magnesium ammonium phosphate sludge to a farmland as a fertilizer, the method comprises the following steps: adding concentrated ammonia water and ammonium salt into the magnesium ammonium phosphate sludge comprising copper, mixing in a vibration manner, carrying out vacuum filtration after fully reacting, drying filter residues in the shade so as to obtain purified magnesium ammonium phosphate, carrying out electrolysis on filtrate which is obtained after solid-liquid separation, recycling elementary copper, mixing electrolyte with the magnesium ammonium phosphate containing copper, and realizing recycling. The copper content of the magnesium ammonium phosphate sludge treated by the method meets Control Standards for Pollutants in Agricultural Sludge (GB4282-84). The technology is simple and easy to operate. The problem that the quality of the magnesium ammonium phosphate sludge is reduced due to the existence of the copper in the wastewater is solved. The copper also can be recycled in the elementary form after being separated. Ammonia leach liquor can be recycled, and chemical cost is saved.
Owner:NANJING UNIV
Domestication method of nostoc and application thereof
InactiveCN102010828BImprove fertilityImprove abilityOther chemical processesUnicellular algaeEcological environmentAlkali soil
The invention discloses a domestication method of nostoc and application thereof. The domestication method comprises the following steps of: preparing a specific culture medium; carrying out salt tolerance domestication, nitrogen and phosphorus content reduction domestication, domestication of adaptability to water to be treated, and the like on screened nostoc species; carrying out step-by-step amplification culture; then leading the nostoc species into a saline and alkaline land, wherein the nostoc is propagated in large quantities by utilizing photosynthesis and absorbs and fixes nitrogen and phosphorus elements contained in atmosphere and water sources; and after the nostoc is propagated, draining culture water for the nostoc, wherein the nostoc is deposited in soil and contains a large quantity of elements, i.e. nitrogen, phosphorus, and the like. After primary treatment is carried out by using the domestication method, the nitrogen contained in the soil is increased by 18-21 percent, the phosphorus is increased by 12-14 percent, and full salt content is reduced by 15-18 percent, therefore not only is nutrient element loss caused by a water washing method prevented, but also the hardening of the soil and the secondary pollution to the water sources and environments, which are caused by chemical fertilizer application, are prevented; and in addition, soil fertility is gradually enhanced and soil restoration is accelerated through multi-time treatment, therefore the purpose of improving an ecological environment is finally achieved.
Owner:北京芳能科技有限公司
Method for preparing biological fertilizer by using bean straw
InactiveCN107032842AHigh in nitrogen and phosphorusIncrease productionSuperphosphatesBio-organic fraction processingPhosphorNitrogen
The invention discloses a method for preparing a biological fertilizer by using bean straw. The method comprises the following steps: a step 1, bean straw is sprinkled by a 5-6mmol / L lactic acid solution, the water content of the straw is 60-65%, and the bean straw is placed for 3-10 hours for standby; a step 2, peanuts and green soy beans are separately crushed, after well mixing, a ferment bacteria fertilizer is added, and well mixing is carried out; a step 3, a mixture in the step 2 is sprayed on the bean straw in the step 1, the bean straw is piled to a cone shape with height of 1-1.2m and width of 1.8-2m, and the bean straw is placed for 7-9 days. The lactic acid solution can obviously increase contents of nitrogen and phosphor as well as yield of early rice, because the lactic acid solution promote degradation of the bean straw, and improves the contents of nitrogen and phosphor in the fertilizer; the method is used for crops, and the ferment bacteria fertilizer can further increase contents of nitrogen and phosphor as well as yield of crops.
Owner:易永强
A kind of novel nickel phosphide catalyst and preparation method thereof
ActiveCN109267095BUniform catalytic activity distributionObvious advantagesElectrodesPtru catalystNickel salt
The invention relates to a novel nickel phosphide catalyst, the catalyst has a large specific surface area and pore volume, and is distributed in multi-level pores, and the catalyst is Ni 2 A composite material in which the P catalytically active centers are uniformly dispersed in the nitrogen-phosphorus co-doped carbon network skeleton. The preparation method includes the following steps: 1) Preparation of MOFs precursors containing nitrogen and phosphorus atoms: respectively weigh phosphorus-containing and nitrogen-containing organic ligands and nickel salts and dissolve them in a certain amount of deionized water to obtain three solutions; Nitrogen and phosphorus atom-containing MOFs precursors were synthesized by micro-droplet method; 2) A certain amount of nitrogen and phosphorus atom-containing MOFs precursors were placed in a corundum porcelain boat, and then calcined in a tube furnace to obtain nitrogen and phosphorus co-doping A nickel phosphide catalyst with evenly distributed catalytic centers covered by porous carbon. The catalyst of the invention has large specific surface area and pore volume, is beneficial to electrochemical catalysis, hydrodesulfurization, selective hydrogenation and other hydrogenation reactions, and has broad application prospects.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)
Synergistic flame retardant containing vegetable oil-based nitrogen and phosphorus, preparation method and application thereof
The invention discloses a vegetable-fat-base-contained nitrogen and phosphorus synergistic fire retardant and a preparation method and application thereof. The preparation method comprises the following steps: through modifying a biomass, acquiring a series of the vegetable-fat-base-contained nitrogen and phosphorus synergistic fire retardants, and phenolic resin for synthesizing the vegetable-fat-base-contained nitrogen and phosphorus synergistic fire retardant, finally uniformly blending with other assistants of a curing agent, a foaming agent, a surfactant and the like, pouring into a mould, curing in a certain temperature, to obtain foam. The phenolic foam of the vegetable-fat-base-contained nitrogen and phosphorus synergistic fire retardant has more excellent flame resistance and mechanical property compared with current pure phenolic foam, and because the fire retardant uses tung oil from a biomass source as a raw material at the same time, the vegetable-fat-base-contained nitrogen and phosphorus synergistic fire retardant has the double effects of saving resources and protecting environment.
Owner:INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY +1
Spirulina acclimatization method and application thereof
InactiveCN102010830BImprove fertilityImprove abilityOther chemical processesUnicellular algaeEcological environmentAlkali soil
The invention discloses a spirulina acclimatization method and application thereof. The method comprises of preparing a culture medium, carrying out salt resistance acclimatization, nitrogen and phosphorus content reduction acclimatization, to-be-treated water quality adaptation acclimatization and the like on screened algae. After the step-by-step amplification culture, the algae is introduced into kaline soil, the spirulina propagate massively by using the photosynthesis and absorbs and fixs nitrogen and phosphorus elements in the atmosphere and water sources, after the propagation, spirulina culture water is discharged, the spirulina is deposited in the soil, and the spirulina contains a large amount of elements such as nitrogen, phosphorus and the like. When the primary treatment is carried out by adopting the method, the nitrogen content in the soil is increased by 21 to 23 percent, the phosphorus content in the soil is increased by 11 to 14 percent, the total salt content is reduced by 20 to 25 percent, the nutrition element loss caused by a water washing method is avoided, the hardening on the soil and the secondary pollution to water sources and the environment caused by fertilizer application are also avoided, the soil fertility is gradually enhanced through performing the treatment many times, the soil recovery can be accelerated, and the goal of improving the ecological environment is finally achieved.
Owner:北京芳能科技有限公司
Special soil for Shixia longan
InactiveCN108341728APromote absorptionImprove physical and chemical propertiesCalcareous fertilisersAnimal corpse fertilisersBiologySilt
The invention belongs to the technical field of soil improvement, and discloses special soil for Shixia longan. The soil comprises the following raw materials in parts by weight: 60-100 parts of fieldsoil, 20-40 parts of carbonized silt, 15-30 parts of biological carbon, 10-25 parts of limestone, 5-10 parts of shell powder, 10-20 parts of furfural residues, 20-40 parts of a nutrition conditioner,and a proper amount of water. The special soil provided by the invention is specially developed according to the characteristics of the Shixia longan, the formula is reasonable, the physical and chemical properties of the soil are improved, and the yield of the Shixia longan is guaranteed.
Owner:平南县正达农业发展有限公司
Synergistic flame retardant containing cardanol-based nitrogen and phosphorus, its preparation method and application
The invention discloses an anacardol group-containing nitrogen and phosphorus synergistic flame retardant and a preparation method and an application. A series of anacardol group-containing nitrogen and phosphorus synergistic flame retardants are obtained by modifying anacardol for synthesizing phenolic resin containing the anacardol group-containing nitrogen and phosphorus synergistic flame retardants, and finally, the phenolic resin is blended and mixed uniformly with other auxiliary agents such as a curing agent, a foaming agent and a surfactant, is poured into a mold, and is cured at a certain temperature to obtain foam. Compared with existing pure phenolic foam, the phenolic foam containing the anacardol group-containing nitrogen and phosphorus synergistic flame retardants not only ismore excellent in flame retardance and mechanical property, but also has the double functions of saving sources and protecting the environment as the flame retardants use anacardol of a biomass source as a raw material.
Owner:INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY +1
A kind of diammonium sulfophosphate binary compound fertilizer and the method for producing diammonium phosphate diammonium binary compound fertilizer by using ammonium phosphate by-products
ActiveCN107746300BHigh in nitrogen and phosphorusPlay the role of auxiliary product generationAlkali orthophosphate fertiliserAmmonium orthophosphate fertilisersSoil scienceDiammonium phosphate
The invention belongs to the technical field of chemical fertilizer production, and provides a diammonium sulfophosphate binary compound fertilizer and a method for producing the diammonium phosphate diammonium binary compound fertilizer by using ammonium phosphate by-products. The raw materials of the compound fertilizer include ammonium phosphate by-products, sulfuric acid, liquid ammonia, urea, ammonium phosphate and bentonite; the compound fertilizer is beneficial for crops to absorb the compound fertilizer, and can be widely applied to field crops. The method for producing diammonium diammonium phosphate binary compound fertilizer by using ammonium phosphate by-products comprises: mixing ammonium phosphate by-products with sulfuric acid to form a slurry for reaction; adding liquid ammonia to the slurry to neutralize the slurry; adding Urea, ammonium phosphate and bentonite are then granulated into materials; the materials are sequentially dried, cooled and screened; this method can comprehensively utilize the by-products of ammonium phosphate, turn waste into treasure, and produce efficient sulfur Diammonium Phosphate Binary Compound Fertilizer.
Owner:LOMON LAND AGRI
A method for recycling citrus peel residue and dewatered sludge to produce biogas by fermentation
InactiveCN105130149BOvercome secondary pollutionSolve difficult environmental problemsGaseous fuelsWaste based fuelMicroorganismContinuous fermentation
The invention aims to the problem of difficult treatment on orange peel residues and municipal sludge and low recycling utilization rate and discloses a method of producing biogas by recycling orange peel and dehydrated sludge through fermentation. In the method, the orange peel residue and the dehydrated sludge are employed as raw materials to perform anaerobic fermentation, wherein the fermentation pH is regulated through a quick lime supernatant. The method allows continuous fermentation and batch fermentation. In the method, the characters that the orange peel residue is high in organic substance content and the dehydrated sludge is high in nitrogen and phosphorus contents and is abundant in microorganism colonies are fully utilized, thereby not only effectively solves the problems of recycling the orange peel residue and the municipal sludge, but also increasing common fermentation efficiency of the orange peel residue and increasing the utilizability of biogas residue and biogas liquid as fertilizers after common fermentation of the orange peel residue. The method is excellent in economic and environmental benefit.
Owner:CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
Cellulose-based nitrogen-phosphorus flame retardant and preparation method thereof
ActiveCN104371031BImprove flame retardant performanceHigh in nitrogen and phosphorusFireproof paintsLiquid ratioReaction temperature
The invention relates to a cellulose-based nitrogen-phosphorus flame retardant and a preparation method thereof. The preparation method comprises the following steps: dissolving a cellulose derivative into a solvent under the stirring condition that the speed is 100-1000 revolutions per minute so as to form uniform phases, adding micromolecule amine compounds as an acid-binding agent, and introducing nitrogen, wherein the water content of the cellulose derivative is less than 1%; dropwise adding phosphorus oxychloride into the solution, and continuously stirring for 1-10 hours while the reaction temperature is maintained at 25-100 DEG C; washing until no chloride ion exists, adding amino compounds into water which serves as a solvent according to the solid-to-liquid ratio of (1 to 1)-(1 to 50), and continuously stirring for 1-10 hours while the reaction temperature is maintained at 25-100 DEG C; filtering and drying to obtain the cellulose-based nitrogen-phosphorus flame retardant, wherein the drying temperature is 40-100 DEG C. The cellulose-based nitrogen-phosphorus flame retardant and the preparation method of the cellulose-based nitrogen-phosphorus flame retardant are environmentally friendly, and the preparation method is easy, convenient and feasible.
Owner:珠海菲伯过滤材料有限公司
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