1969 results about "Charcoal" patented technology

A system for purifying and delivering surface water from rain or snow-melt to the local aquifer in order to increase the local groundwater level, is disclosed. The system includes activated charcoal for removal of contaminants including per- and polyfluoroalkyl substances, commonly referred to as PFAS, from surface water prior to delivering the water to the aquifer.

The invention discloses a culture method of anaerobic ammonia oxidation granular sludge with a polydopamine modified charcoal-loaded Fe-Cu sodium alginate microsphere kernel, which comprises the following steps: modifying charcoal by using polydopamine, then carrying out Fe-Cu ion loading, finally preparing sodium alginate microspheres, and taking the prepared sodium alginate microspheres as the kernel to prepare the anaerobic ammonia oxidation granular sludge with the polydopamine modified charcoal-loaded Fe-Cu sodium alginate microsphere kernel. And co-culturing the sodium alginate microspheres and activated bacillus DMF-4 in an oxygen-free environment, continuously culturing for 3 weeks, and collecting by using a gravity settling or centrifugal method to obtain the anaerobic ammonium oxidation granular sludge with the sodium alginate microsphere core. The sodium alginate microspheres serving as the core provide large density and good morphological support for sludge particles, the problem of sludge bulking is avoided, and the settling performance is improved. According to the present invention, the sludge anti-shearing performance is improved, the adsorption capacity of the slowly released and continuously slowly released iron ions on organic matters, ammonia nitrogen and heavy metals is enhanced, the sewage treatment effect is improved, and the iron ions are the biodegradable material so as not to cause secondary pollution in the use process.

The invention discloses a magnetic biochar composite adsorbent as well as a preparation method and water treatment application thereof, and relates to the technical field of adsorption materials. The preparation method consists of a biochar matrix and magnetic particles loaded on the surface and in pores of the biochar matrix, and comprises the following steps: preparation of the biochar matrix: step 1, firstly, selecting a biomass raw material; the magnetic charcoal composite adsorbent has unique structure and performance advantages, abundant pore structures and surface functional groups of the adsorbent can provide a large number of adsorption sites for pollutants, and due to the existence of magnetic particles, after the adsorption process is completed, the adsorbent only needs to be placed in an external magnetic field such as an electromagnet and a permanent magnet, so that the magnetic charcoal composite adsorbent can be used for adsorbing the pollutants. The adsorbent can be rapidly separated from the solution or the suspension, the separation time can be controlled within 1-10 minutes, the recovery efficiency of the adsorbent is greatly improved, the treatment cost is reduced, and the adsorbent can be repeatedly used and has good economical efficiency and environmental protection property.

The invention discloses a biomass charcoal composite hydrogel slow-release fertilizer as well as a preparation method and application thereof, and belongs to the field of composite hydrogel and fertilizer preparation. The invention provides a biomass charcoal composite hydrogel slow release fertilizer, which comprises biomass charcoal, hydrogel fixed on the pores and surface of the biomass charcoal, and an element fertilizer mixed in the hydrogel, and the hydrogel is prepared from metal cations and alginate. The invention provides a strategy of'in-hole in-situ gelation ', hydrogel is prepared in situ in gaps of the biochar, and the biomass charcoal composite hydrogel slow-release fertilizer is prepared. The biochar and the hydrogel in the slow-release fertilizer are high in bonding strength and mechanical strength, so that the slow-release fertilizer has the slow-release function of the fertilizer and also has the capability of improving soil.

The invention discloses a Ca / Mg-based modified biochar material and a preparation method and application thereof, and the preparation method comprises the following steps: pretreatment: drying a biomass material shaddock peel, crushing, sieving, washing and drying, then carrying out acid leaching activation, washing again and drying to obtain high-activity biomass powder for later use; dipping modification: fully mixing the high-activity biomass powder obtained in the pretreatment step with CaO and MgO, adding distilled water, dipping under heating and stirring conditions, then carrying out solid-liquid separation, washing a filter cake for multiple times, freeze-drying, and sieving to obtain an intermediate product; the intermediate product is calcined, naturally cooled, washed and dried, and the Ca / Mg-based modified bimetallic modified charcoal material is obtained and can be applied to adsorption of phosphate in a wastewater solution as an adsorbent. The preparation method is simple, the raw materials are easy to obtain, the cost is low, the material stability is good, the pH adaptability is good, the adsorption effect is good, and the method is suitable for water environments with more complex pollution factors.

The invention discloses a coal gangue abandoned mine ecological restoration water retention technology, and belongs to the technical field of environmental protection. According to the remediation technology, after the surface soil of the mine is loosened, the alkaline waste and the heavy metal adsorbent are firstly added for neutralization and adsorption pretreatment, and then the composite soil conditioner is continuously added to sequentially cover and construct the improved composite layer soil in a gradient manner; the composite soil conditioner comprises fly ash, steel slag, local clay, straw fibers, water-retaining slow-release microcapsules, charcoal, papermaking white mud and humus soil, high-resistance vegetation is transplanted on the obtained improved composite layer soil, meanwhile, a microbial agent is inoculated, and remediation is completed after the soil is maintained to be stable. According to the method, multiple technical processes are integrated and matched and cooperated with one another, the purpose of long-acting water retention is finally achieved through the combined action of multiple remediation mechanisms of materials, vegetation and microorganisms, and compared with a traditional mine remediation technology, the method is better in stability and longer in acting time and has a good application prospect.

The invention discloses a preparation process of a soil conditioner and application of the soil conditioner in soil improvement, and the preparation process comprises the following steps: S1, preparation of pretreated biomass; s2, preparation of composite biochar; s3, preparation of sulfhydrylated biochar; s4, preparing the modified composite biochar; and S5, uniformly mixing the modified composite charcoal, kaolin, humic acid, fly ash, slaked lime and vermiculite to obtain the soil conditioner. According to the soil conditioner, modified composite biochar prepared through specific functionalization is blended with kaolin, humic acid, fly ash, slaked lime and vermiculite according to a certain proportion, and the prepared soil conditioner has unique advantages in the aspects of improving soil organic matter, fixing carbon, providing microelements and especially regulating and controlling the activity of soil microorganisms; advanced complementation and synergistic interaction of all the components are achieved, and the comprehensive treatment requirement of complex degraded soil can be better met.

The invention relates to the technical field of biochar preparation materials, and discloses a preparation method of a modified coal gangue-municipal sludge-based biochar soil conditioner, which comprises the following steps: crushing a coal gangue raw material and a municipal sludge raw material to obtain coal gangue powder and municipal sludge powder; the coal gangue powder and the municipal sludge powder are leached to obtain leached coal gangue powder and leached municipal sludge powder, the leached coal gangue powder and the leached municipal sludge powder are mixed to obtain mixed solid waste powder, the mixed solid waste powder is pyrolyzed to obtain pyrolyzed biochar, the pyrolyzed biochar is acidized to obtain acidized biochar, and the acidized biochar is acidized to obtain acidized biochar. The acidified biochar is subjected to ball milling, and first modified biochar is obtained; active sites of the first modified charcoal are increased, and the target charcoal soil conditioner is obtained. The soil improvement effect of the biochar can be improved.

The invention provides a salt-tolerant plant constructed wetland system for treating eutrophicated mariculture wastewater, which specifically comprises a lower filler formed by mineral materials, and a middle filler formed by modified zeolite, sodium alginate coated vermiculite, rice husk charcoal, oyster shell, coral sand and diatomite, the surface filler is composed of intertidal zone bottom mud, intertidal zone raw water, coastal saline-alkali soil and composite algae powder, and the three fillers are combined with salt-tolerant plant breeding, bow-shaped water flow optimization and layered collaborative design; the core problems of poor salt tolerance, low adsorption efficiency, easiness in blockage, high maintenance cost and the like of the traditional constructed wetland during treatment of the mariculture wastewater are systematically solved.

The invention relates to the technical field of saline-alkali soil improvement, and discloses a composite improved saline-alkali soil composition based on biomass charcoal and a preparation method thereof.Biomass charcoal, glucose, lactic acid bacteria, saccharomycetes, aluminum sulfate and a quaternary ammonium salt modifier are added into a stirrer to be stirred and mixed, stirring is conducted, and a mixture is obtained; and obtaining the composite improved saline-alkali soil composition based on the biomass charcoal. A quaternary ammonium salt group in the quaternary ammonium salt modifier can reduce the pH value of the soil and reduce the alkalinity of the soil, so that the salinization condition of the soil is improved, and quaternary ammonium salt can promote the activity of soil microorganisms and improve the fertility of the soil and the growth environment of crops; the siloxane is converted to be neutral by adjusting the pH value of the soil, the siloxane is beneficial to reducing the alkalinity of the soil, and a more suitable growth environment is provided for plants; wherein the contained boric acid group reduces the pH value of the soil by neutralizing alkaline substances in the soil, and has a relatively good improvement effect on the saline-alkali soil.

The invention discloses a biomass pyrolysis coupling magnesite calcination synergetic poly-generation method and system. The method mainly comprises the following steps: pyrolyzing a biomass raw material in a biomass pyrolyzing furnace to generate biomass charcoal and biomass gas; biomass gas is fed into the combustion chamber to be combusted, one part of combustion products are fed into the biomass pyrolyzing furnace to supply heat, and the other part of the combustion products are fed into the heat exchanger; feeding the magnesite into a calcining furnace for high-temperature smelting to generate carbon dioxide and magnesium oxide; high-temperature carbon dioxide gas exhausted by the calcining furnace is used for drying and preheating magnesite, one part of the cooled gas is recycled, one part of the cooled gas is fed into the biomass pyrolyzing furnace to react with biomass charcoal, and the other part of the cooled gas enters the heat exchanger to be heated and then enters the calcining furnace. According to the method, light calcined magnesia and carbon dioxide capture are achieved, joint production of high-added-value multi-aperture biomass charcoal and a high-purity carbon dioxide product is generated, biomass fuel which is zero-carbon energy is used for replacing traditional fossil energy, and low-carbon even zero-carbon carbonization in the initial smelting link of magnesite is achieved.

The invention discloses a method and a system for detecting metabolism kinetics of organic carbon and microbial carbon in deep soil, and relates to the technical field of soil science and environmental science. Comprising the following steps: acquiring the content and structural characteristics of organic carbon in the soil of the rice field, and determining the composition, function and dynamic response mechanism of microbial communities to environmental change; setting a control group and a treatment group, and obtaining soil organic carbon reserve change rates, CO2 emissions and influence factors in the control group and the treatment group at different time points; and constructing a data analysis model according to the soil organic carbon reserve change rate, CO2 emission and influence factors in the control group and the treatment group at different time points, and generating a comprehensive report of deep soil organic carbon and microbial carbon metabolism kinetics. According to the invention, a scientific basis is provided for optimizing agricultural management and coping with climate change, the positive influence of biomass charcoal addition on soil health is disclosed, and the development of sustainable agriculture is promoted.

The invention provides nitrogen / sulfur co-doped charcoal loaded nano zero-valent iron as well as a preparation method and application thereof, and relates to the technical field of sewage treatment. The nitrogen / sulfur co-doped biochar loaded nano zero-valent iron is a composite material prepared by taking nitrogen / sulfur co-doped biochar as a carrier material and loading nano zero-valent iron; the nitrogen / sulfur co-doped biochar is prepared from the following raw materials: melamine, diphenyl disulfide and walnut shells. The nitrogen / sulfur co-doped biochar loaded nano zero-valent iron prepared by the invention combines the porous characteristic of biochar and the high reaction activity of nano zero-valent iron, not only has excellent oxidation resistance and corrosion resistance, but also retains good hydrophilicity and magnetism, can efficiently remove antibiotic pollutants in the environment, and has a good application prospect. And actual operation and recycling are facilitated.

The invention discloses high-specific-surface-area micro-mesoporous biomass porous carbon as well as a preparation method and application thereof. The method comprises the following steps: performing hydrothermal catalytic reaction on tobacco stems in an H2O2 solution to loosen a compact structure and increase oxygen-containing functional groups, fully mixing pretreated tobacco stem hydrothermal carbon and sodium lignin sulfonate in an aqueous solution in a solid-liquid form, adding glutaraldehyde to perform cross-linking reaction, and drying to obtain the tobacco stem hydrothermal carbon / sodium lignin sulfonate composite material. The preparation method comprises the following steps: preparing CaCO3 and tobacco stem into a composite biomass charcoal source with a stable three-dimensional network structure, preparing a composite biomass / CaCO3 precursor through an in-situ coprecipitation method, and finally carrying out high-temperature carbonization to obtain the tobacco stem / lignin composite porous carbon with a micro-mesoporous structure, a high specific surface area and a stable structure. The porous carbon material not only has abundant and mutually communicated hierarchical porous structures and high specific surface area, but also contains abundant active oxygen-containing functional groups, so that the surface characteristics of the porous carbon are improved, more adsorption sites can be provided, and the adsorption performance of the porous carbon material is greatly improved.

The invention relates to the field of environment restoration, and discloses a semi-coke ecological system environment restoration method which comprises the following steps: waste gas treatment: treating sulfur-containing gas, nitric oxide and particulate matters generated in semi-coke production by adopting a multi-stage gas purification device, and further purifying residual harmful substances by adopting a low-temperature plasma technology; wastewater treatment: carrying out multi-stage purification on industrial wastewater generated in semi-coke production through physical filtration, chemical precipitation and biological treatment, and carrying out advanced treatment on the wastewater in combination with a membrane separation technology; and solid waste treatment: carrying out high-temperature gasification treatment on solid wastes generated in semi-coke production, recovering energy and using residues for regenerated material production. The comprehensive treatment of various pollutants generated in the production process is realized through the technologies of multi-stage waste gas purification, waste water deep treatment and solid waste resource utilization, and the removal efficiency of sulfur oxides and nitrogen oxides is remarkably improved by the waste gas treatment system through the combination of wet desulfurization and dry desulfurization.

The application discloses a kind of derived biomass hard carbon material pulverization process, belong to biomass charcoal material processing technical field, first, pulverization process includes the following steps: after drying, the coconut shell derived hard carbon block is carried out primary crushing, while spraying first modifier, obtain the particle size 1~3mm of coarse crushing modified particle;Coarse crushing modified particle is carried out secondary precision crushing under argon atmosphere, while spraying second modifier, obtain the precision crushing modified particle of D 50 Particle size is 15 μm;Precision crushing modified particle is carried out roll grinding spheroidization, while spraying third modifier, obtain the spherical modified particle of D 50 Particle size is 10 μm;Spherical modified particle is carried out flash drying after cooling, then add magnesium stearate to it, after mixing, obtain derived biomass hard carbon material.Then, the application realizes breakthrough in tap density, particle size distribution, first efficiency and other core indexes by the coordination of three-stage gradient modification and progressive pulverization process.

The invention discloses a biomass charcoal processing pelletizer, and relates to the technical field of pelletizers, the biomass charcoal processing pelletizer comprises a driving assembly and a pelletizing chamber, a circular mold is fixedly connected in the pelletizing chamber, the output end of the driving assembly is an output shaft extending into the pelletizing chamber, during pelletizing operation, two compression rollers revolve around the axis of the circular mold along with rotation of the output shaft, and meanwhile, the two compression rollers rotate around the axis of the circular mold along with rotation of the output shaft. Under the action of the rotating assembly, in the process, the pressing roller automatically rolls to bite materials into an extrusion area, further, force applied to the materials by rolling of the pressing roller is perpendicular to the tangential direction of the outer contour of the pressing roller, and the included angle between the pressure direction and the axis direction of a discharging die hole of the circular die is extremely small, so that the working efficiency is high; active rotation of the compression roller replaces passive rotation, passive rotation promoted by friction between the compression roller and the circular mold and materials is avoided, accumulated heat in the granulation chamber is reduced, energy is saved, meanwhile, abrasion of the materials to the compression roller and the circular mold is relieved through active rotation compared with passive rotation, and the equipment maintenance cost is reduced.

The invention relates to the field of agricultural fertilizer and soil improvement, in particular to a biochar-based slow release fertilizer for improving acidified soil and a preparation method thereof.The biochar-based slow release fertilizer is prepared from, by mass, 60 parts of a biochar system, 5-12 parts of nitrogen fertilizer, 10-18 parts of phosphate fertilizer, 5-12 parts of potash fertilizer, 5-10 parts of an acid soil modifier and 2-5 parts of a slow release film; graded release of nutrients is achieved through a multi-aperture biochar system, the release rhythm is dynamically adjusted according to soil acidity in combination with a three-layer pH response type slow-release film, the problems that existing fertilizer nutrient release is not matched with crop requirements, and the persistence of acidified soil improvement is poor are solved, the pH and buffer capacity of acidified soil can be improved, the nutrient utilization rate is increased, and the soil quality is improved. And most of the raw materials are agricultural and forestry wastes and industrial byproducts, so that the soil conditioner meets agricultural requirements, is suitable for acidified soil, and has a wide application prospect.

The invention belongs to the technical field of high polymer materials, and relates to a 5VA high-flame-retardancy ABS (Acrylonitrile Butadiene Styrene) resin composition and a preparation method thereof, and the resin comprises the following components in parts by weight: 65-75 parts of ABS resin; 3-8 parts of chlorinated polyethylene; 15-20 parts of an aromatic brominated flame retardant; 3-6 parts of an antimony flame retardant synergist; 3 to 6 parts of nano charring master batch and 0.1 to 0.5 part of anti-dripping agent; 0.2 to 0.5 part of an antioxidant; 0.5 to 1.0 part of light stabilizer; 0.5 to 1.0 part of lubricant; the preparation method comprises the following steps: stirring and fully mixing the raw materials in a high-speed mixer, conveying, shearing and mixing by a double-screw extruder on a screw, melting, compounding, homogenizing, drawing, cooling and pelletizing to obtain the 5VA high-flame-retardant ABS resin composition. Compared with the prior art, the invention solves the problems of poor flame retardance and low impact property of flame-retardant ABS resin thin-wall 5VA, is suitable for meeting the requirement of high flame retardance of 5VA, and is also suitable for application occasions of flame-retardant S.2 needle flame combustion standards.

A detachable handle for a grilling apparatus including a grate, such as a charcoal grill is provided. The detachable handles includes a handle assembly removably connected to a grill extending element. The detachable handle further includes at least one fastener configured to secure the grill extending element to the grate.

The invention discloses a regeneration production process of powdery waste activated carbon. The regeneration production process comprises the following steps: S1, feeding the powdery waste activated carbon into a crushing and drying furnace for crushing and drying; s2, feeding the powdery waste activated carbon into a cyclone separator and a cloth bag separator for solid-gas separation, and then feeding the powdery waste activated carbon into an activation furnace through a feeder for activation; s3, the activation furnace is preheated before feeding, and then high-pressure steam generated by the boiler is fed into the activation furnace; s4, the powdery waste activated carbon is fed into an activation furnace to be activated, then cooling is conducted, and finished activated carbon is separated out; and S5, feeding the finished product activated carbon to a mixing bin, and discharging and bagging the finished product activated carbon. Compared with the traditional method for regenerating the powdery waste activated carbon by using an earth kiln technology, the method can recover the powdery waste activated carbon to the same quality as the original activated carbon by using the physical action of high-temperature activation, and is stable in technology, high in yield, good in finished product quality and high in yield.

The utility model discloses an in-situ groundwater heavy metal pollution remediation device. Comprising two permeable reactive barriers arranged at intervals in the groundwater pollution plume runoff direction. A filling cavity is formed between the two permeable reactive barriers, and filling materials are arranged in the filling cavity. According to the utility model, a double-unit permeable reactive barrier is adopted to carry out an in-situ remediation method, the first unit is filled with a zeolite and volcanic rock composite filter material to adsorb and capture heavy metal pollutants, and the second unit is filled with an active charcoal composite filler to further efficiently adsorb residual heavy metals. In addition, a plant planting zone is constructed for planting heavy metal hyperaccumulation herbaceous plants, pollutants such as heavy metal in underground water are thoroughly removed through the absorption and stabilization effect of plants, and the underground water is purified. The device adopts stable, economic, efficient and safe active filler to adsorb and remove heavy metals in underground water, and has the advantages of efficient restoration, strong applicability, ecological environmental protection and the like.

The invention provides a method for realizing rapid composting based on prediction and reverse adjustment, which comprises the following steps: 1) carrying out Meta analysis, comprehensively judging eight maturity indexes inside and outside a pile body, and providing an optimized data set for establishing an optimal prediction model for machine learning; 2) testing the performance of the model in a real scene, and collecting data of eight indexes; 3) utilizing Python to integrate prediction and reverse adjustment in the charcoal composting process into the optimal prediction model, and setting upper and lower limit values of process indexes in a thermophilic period, a high-temperature period and a cooling period; 4) inputting the collected eight index data into a model fusing prediction and reverse adjustment in the biochar composting process, and optimizing upper and lower limit values of process indexes in three periods; and 5) finally verifying the composting days based on prediction and reverse adjustment in the charcoal composting process in a real scene experiment so as to realize rapid composting. According to the method, the multi-target prediction model is established, different indexes of compost can be rapidly predicted, and the cost and time of manual determination are reduced.

The invention provides a modified biochar and ferromanganese double-metal hydroxide composite material and a preparation method thereof, and relates to the technical field of adsorption materials.The preparation method comprises the steps that straw is subjected to pyrolysis treatment, and biochar is obtained; and then loading the ferromanganese bimetal hydroxide on the surface of the biochar by using a chemical method. The preparation process comprises a plurality of steps of mixing, stirring, precipitating, washing, drying and the like, so that the ferromanganese double-metal hydroxide can be uniformly and firmly attached to the biochar; according to the scheme, the adsorption performance of the biochar (BC) and the catalytic performance of the ferromanganese bimetal hydroxide (MnFe-LDH) are combined, and the high removal efficiency on heavy metal ions and organic pollutants is achieved. In addition, the composite material also has good stability and renewability, and is beneficial to reducing the wastewater treatment cost and improving the treatment efficiency.

The invention provides a porous ceramsite adsorption material prepared from straw biochar and rare earth tailings as well as a preparation method and application of the porous ceramsite adsorption material, and belongs to the technical field of environmental functional adsorption materials. The preparation method of the porous ceramsite adsorption material using the straw biochar and the rare earth tailings comprises the following steps: sequentially performing acid pickling and drying on the straw biochar to obtain acidified biomass charcoal; the rare earth tailings are subjected to ball milling, and tailings fine powder is obtained; mixing the acidified biomass charcoal, the tailing fine powder, the attapulgite and the wood chips to obtain a mixture; adding a binding agent and water into the mixture, and sequentially performing kneading and extrusion molding to obtain a ceramsite precursor; and calcining the ceramsite precursor in a protective atmosphere to obtain the porous ceramsite adsorption material. The technical problems that a traditional adsorption material is low in adsorption capacity, poor in strength and difficult to recycle are solved through ternary compounding of the acidified biomass charcoal, the rare earth tailings and the attapulgite and in combination with wood chip pore-forming, segmented calcination and acid pickling pretreatment.

The invention relates to the technical field of microbial fertilizers, in particular to a microbial fertilizer for improving a soil structure and a preparation method thereof, and the microbial fertilizer comprises the following components: microbial flora, a charcoal-based composite material, magnetic nanoparticles, a polymer water retention agent, a soil enzyme activator, peanut bran, molasses and a trace element supplement. By selecting and proportioning functional components such as various microbial florae, biochar-based composite materials, magnetic nanoparticles and the like, the invention aims to construct the microbial fertilizer with efficient nutrient utilization, excellent soil structure improvement capability and environmental adaptability, not only the instant effect of the fertilizer is concerned, but also the long-term benefit and ecological sustainability of the fertilizer are concerned, and the application prospect is wide. Powerful support is provided for green development of modern agriculture.

The invention relates to a mine solid waste-based composite saline-alkali soil modifier as well as a preparation method and application thereof, and belongs to the technical field of soil remediation and solid waste recycling. The modifier is prepared from volcanic rock solid waste, rice husk and mussel shell as raw materials through oxalic acid activation, microbial fermentation carbonization and humic acid chelation, and comprises 50-70 parts of activated stone powder-containing porous particles, 20-30 parts of rice husk-based charcoal, 10-20 parts of humic acid chelated magnesium-calcium powder and 3-5 parts of a composite binder. The preparation method comprises the following steps: ultrasonically activating the stone powder oxalic acid, and puffing and granulating with the binder; inoculating the rice hulls with salt-tolerant bacillus and actinomycetes for aerobic fermentation and carbonization; and the shell is activated by oxalic acid and then is loaded with a humic acid calcium magnesium compound. The modifier is applied according to 50-200kg / mu, so that the nutritional ingredients and the air permeability can be improved. According to the method, solid waste recycling, solid waste consumption and landfill cost and CO2 emission reduction are achieved, and the method is suitable for ecological restoration of the coastal saline-alkali soil and has both environmental protection and economic benefits.

The invention relates to the technical field of data management analysis, in particular to an indoor radon concentration detection management method and system, and the method comprises the steps: determining that the system is in a normal operation state; obtaining the number of carbon boxes in the current detection batch, the first weight of each carbon box and the second weight after the radon concentration detection sample is put; determining whether the radon concentration detection sample is abnormal according to the first weight and the second weight; if not, enabling the system to sleep for a preset time period T, and detecting the indoor radon concentration; and after the indoor radon concentration detection is finished, obtaining detection data, and generating a data list containing the current batch number, the detection sample ID and the detection data. According to the indoor radon concentration detection management system and method, the system state information, the sample batch information and the sample weight information can be managed in a unified mode by constructing the indoor radon concentration detection management system and method of the self-control detection process, full automation of indoor radon concentration detection is achieved, the indoor radon concentration detection cost is reduced, and the detection efficiency and quality are improved.

The invention provides a biological organic fertilizer for heavy metal contaminated soil remediation and a preparation method thereof, and belongs to the technical field of fertilizers, the biological organic fertilizer comprises the following raw materials by weight: 15-20 parts of chicken manure, 24-29 parts of pig manure, 3-9 parts of wormcast, 11-15 parts of soybean meal, 20-25 parts of modified charcoal, 16-21 parts of an extraction residue fermentation product, and 4-12 parts of a microbial agent. The prepared biological organic fertilizer for heavy metal contaminated soil remediation can improve the pH value of soil, can continuously and effectively improve the physical and chemical properties of the soil, improves the biological activity of the soil, can effectively reduce the content level of heavy metal elements in the soil, achieves all-around adjustment of the soil environment, and promotes soybean income increase.

The invention discloses a carbon-based organic fertilizer for controlling soil ammonia volatilization and improving soil fertility and a preparation method and application thereof. Livestock and poultry manure, fungus residues, wheat straw, fulvic acid and modified biochar are used as fermentation raw materials; the mass ratio of the livestock manure to the fungus residues to the wheat straw is (5-10): (5-10): 100, and stacking in an aerobic composting reactor for 25-40 days; the mixture of the livestock and poultry manure, the fungus residues and the wheat straw is an initial stacking material; the mass ratio of the fulvic acid to the modified charcoal to the initial compost is (4-8): (15-30): (200-300). The method provided by the invention is simple and easy to operate, and can be widely applied to agricultural production of saline-alkali soil.