85results about How to "Carbon rich" patented technology

The invention disclose a method for intercepting and fixing the persistent organic contaminants of soil through bio-carbon which includes the following steps: 1) a biomass material is carbonized for 0.5 to 6 hours under the temperature of 250 to 550 DEG C and the condition of oxygen limitation and passes through the screen of 10 to 200 meshes, thus preparing the bio-carbon; 2) the prepared bio-carbon is added into the soil polluted by the persistent organic matters according to the ratio of 1 to 200tons / hektare and the soil within 0 to 30cm of a surface layer is ploughed for leading the soil to be fully mixed with the bio-carbon; 3) after being aged, the bio-carbon fiercely absorbs the persistent organic matters, thereby greatly reducing the biological effectiveness thereof and being capable of producing safe farm products in the oil polluted by the organic mattes. The bio-carbon adopted by the treatment method has the advantages of easy obtaining, low cost, environmental friendlessness, non-secondary pollution, simple preparation technique, good treatment effect and long time effectiveness; simultaneously the bio-carbon contains a plurality of carbon and other nutrition elements, thus being capable of providing abundant carbon sources and nutrition for the growing of soil crops and having the effect for enriching the soil.

The invention relates to a device for anaerobic removal of organic matters in municipal sewage and denitrification of autotrophic organism and a method. The device is provided with an original water tank, an anaerobic reactor, a dephosphorization reactor, an intermediate sedimentation tank, a semi-short distance nitration reactor, a secondary sedimentation tank, an intermediate water tank and an anaerobic ammonium oxidation reactor; wherein, the anaerobic reactor is an anaerobic biological filter filled with sponge fillers; a first grid chamber of the dephosphorization reactor is an anaerobic area, and the other four grid chambers are aerobic areas; the semi-short distance nitration reactor is provided with one anoxic area and four aerobic areas; the anaerobic ammonium oxidation reactor is provided with a columnar reactant and a water bath sleeve. The method utilizing the device comprises: 1) activated sludge obtained from a sewage treatment plant is put into the dephosphorization reactor and the semi-short distance nitration reactor; 2) the municipal sewage is firstly pumped into the anaerobic reactor; 3) the water output by the anaerobic reactor enters the dephosphorization reactor; 4) the water output by the dephosphorization reactor enters the semi-short distance nitration reactor through the intermediate sedimentation tank. The invention is applicable to municipal sewage treatment, and has the advantages of complete structure, advanced technique and high efficiency.

A hydrolysis denitrification denitrification system and method. The system replaces the traditional anoxic tank with an upflow sludge bed hydrolysis reactor. The hydrolysis reactor includes: an effluent return channel, which is arranged between the sedimentation tank and the hydrolysis reactor, so that the discharged water from the sedimentation tank contains The nitrate supernatant is used as reflux to flow back into the hydrolysis reactor for hydrolysis, denitrification and denitrification. In the present invention, the hydrolysis reactor is used as the functional area of ​​pre-denitrification denitrification, and the good anaerobic environment in the hydrolysis reactor, the rapid recovery ability of the denitrification bacteria function and the sufficient supply capacity of organic matter are used to realize efficient and stable hydrolysis reaction. Nitrification and denitrification. The invention makes full use of the carbon source in the sewage, improves the denitrification efficiency, and reduces the energy consumption of the whole sewage treatment process. The invention can be combined with common urban sewage treatment processes such as AAO and oxidation ditch, and is convenient for upgrading and reforming existing facilities of sewage treatment plants.

The invention relates to a compound microorganism bacterium agent used for sludge reduction, a preparation method and application of the compound microorganism bacterium agent. The compound microorganism bacterium agent is a liquid bacterium agent prepared by fermenting denitrified pseudomonas, nocardia coralline, candida utilis, rhodobacter sphaeroides and aspergillus sojae. According to the invention, the metabiosis action between microbe consortia is utilized to form a biodegradation system in which the activities of various required enzymes are all high, so dead or decrepit thalli in activated sludge can be effectively damaged and decomposed, and meanwhile, organic matters can be decomposed; and the generation quantity of excess sludge is reduced through reducing the quantity of the sludge in the process without influencing the quality of yielding water. On the premise of not greatly changing the traditional sewage treatment process, the sludge reduction ratio can reach 30%-70% in the sewage treatment process by adopting the compound microorganism bacterium agent, and the comprehensive running cost of the sludge treatment can be reduced, so that the compound microorganism bacterium agent is of great significance on the aspects of economic, environmental and social benefits.

The invention discloses a preparation method of a water-soluble nitrogen-phosphorus-boron codoped carbon quantum dot. The preparation method comprises the following steps: step I, dissolving phenylphosphinic acid in ultra pure water to obtain a precursor solution I, dissolving 3-aminobenzene boronic acid in ultra pure water to obtain a precursor solution II, and uniformly mixing the precursor solution I with the precursor solution II in the volume ratio of the precursor solution I to the precursor solution II being (1-6) to 1 so as to obtain a mixed solution; step II, performing a hydrothermal reaction on the mixed solution prepared in the step I so as to obtain the water-soluble nitrogen-phosphorus-boron codoped carbon quantum dot. According to the preparation method disclosed by the invention, the water-soluble nitrogen-phosphorus-boron codoped carbon quantum dot is prepared by the one-step hydrothermal method, carbon sources are rich, a preparation process is simple and easy, the whole preparation process is pollution-free, non-toxic, green and environmentally-friendly, and the water-soluble nitrogen-phosphorus-boron codoped carbon quantum dot can be prepared in a large-scale manner.

The invention belongs to the technical field of fluorescent carbon nanomaterials, and particularly relates to a preparation method of nitrogen-doped carbon quantum dots. The preparation method of thenitrogen-doped carbon quantum dots comprises the following preparation steps: 1) placing saccharose and ethanolamine in a glass vessel, adding water for three times, fully stirring, and carrying out ultrasonic treatment to obtain a settled solution; 2) placing the settled solution obtained in step 1) in a liner of a polytetrafluoroethylene hydrothermal reactor to obtain reaction liquid; 3) coolingthe reaction liquid obtained in step 2) to a room temperature, carrying out suction filtration and centrifuging, filtering the reaction liquid with a filter membrane, and dialyzing the reaction liquid to obtain dialysate; and 4) concentrating the dialysate obtained in step 3), and drying under vacuum to obtain nitrogen-doped carbon quantum dot solid powder. The prepared water-soluble nitrogen-doped carbon quantum dots have good water solubility, are adjustable in stimulation and emission, stable in fluorescence, good in biocompatibility and high in yield, and has good application prospect inthe fields of bio-imaging, fluorescence probes, photocatalysis and the like.

The invention relates to a kitchen garbage slurry anaerobic fermentation wastewater treatment method, in particular to a treatment method for treating wastewater produced in other procedures through wastewater produced after anaerobic fermentation dehydration of kitchen garbage slurry and kitchen garbage. Wastewater is subjected to oil-separation primary precipitation, water amount and water quality adjustment, first pH value adjustment, free ammonia stripping in an ammonia stripping tower, second pH value adjustment, A / O biochemical treatment, precipitation treatment, treatment in a Fenton reactor and treatment in a coagulative precipitation tank, so that pollutants such as COD, BOD5 and SS in the wastewater are removed, TN and TP can be removed effectively, the wastewater chroma can be lowered effectively, the TN and TP removing rates are increased, and pollutants such as COD, BOD5, TN, NH3-N, TP and chroma in the treated wastewater can stably meet the requirements in Integrated Wastewater Discharge Standard (GB8978-1996, grade III standard) and Wastewater Quality Standards for Discharge to Municipal Sewers (GB / T 31962-2015, grade B).

The invention belongs to the field of lithium-sulfur battery cathode materials, and provides a preparation method of a high-performance lithium-sulfur battery cathode material derived and synthesizedfrom NiZIF67@Mela. The method comprises the steps: forming N-doped hollow porous carbon (Ni / CoCNT / NHPC) loaded with Ni and Co nanoparticles after NiZIF67 (at) Mela annealing, and growing a large number of CNTs on the surface of the carbon due to the catalytic action of Ni and Co. Melamine provides a rich carbon source and a nitrogen source, the Ni / CoCNT / NHPC electrode material has a high specificsurface area, and the conductivity of the material is improved by CNT generated on the surface of the Ni / CoCNT / NHPC electrode material. Besides, dissolving of polysulfide is limited through chemical adsorption and physical adsorption by means of nitrogen doping and a hollow carbon skeleton structure, the shuttle effect is inhibited, the conversion of polysulfide is catalyzed by generated Ni and Cobimetal nanoparticles, and the obtained Ni / CoCNT / NHPC electrode material integrates rich CNT, a complete hollow skeleton, Ni, Co and N doping; meanwhile, the material has high specific surface area,good conductivity, relatively strong chemical adsorption and physical adsorption and catalytic action on polysulfide, and the performance of the lithium-sulfur battery is further improved.

The invention relates to a green plum enzyme and a production process thereof. The green plum enzyme comprises the following raw materials in weight percent: 15-25% of green plum, 15-25% of grape, 10-20% of cranberry, and 10-25% of longan meat , mulberry 10-20%, wheat germ powder 10-20%, polylysine 4-8% and ascorbic acid 4-8%. The green plum enzyme described in the present invention uses various pure natural materials as raw materials, and is obtained after processes such as enzymolysis, homogenization, and probiotic fermentation. efficacy and food safety. The green plum enzyme contains higher resveratrol content and superoxide dismutase enzyme activity, which can reduce the risk of atherosclerosis and coronary heart disease. The green plum enzyme of the invention has a simple preparation process, shortens the natural fermentation time and product production cycle, and has important application value.

The invention provides a method for producing glycyrrhetinic acid through microbial fermentation transformation. The method comprises the following steps of: inoculating aspergillus flavus CGMCC No 5144 into a solid potato dextrose agar (PDA) slant culture medium to cultivate; inoculating 1 percent of the cultivated aspergillus flavus CGMCC No 5144 to a culture medium containing fresh seeds from the inclined surface to cultivate; inoculating 30 percent of the strains obtained from the seed culture medium to a fermentation tank containing a fresh fermentation culture medium and performing fermentation culture to obtain fermentation liquid containing the glycyrrhetinic acid; separating a glycyrrhetinic acid coarse product from the fermentation liquid by a membrane separation combined process; and preparing high-purity glycyrrhetinic acid by a purification process. In the glycyrrhetinic acid finally obtained by the method, the fermentation quantity reaches 4.38 g / L, the product purity is more than or equal to 98 percent, the conversion rate is more than or equal to 90 percent, and the technological scale level is reached.

The invention discloses a preparation method of water-soluble nitrogen-doped carbon quantum dots, comprising the following steps: Step 1, dissolving citric acid in ultrapure water to prepare precursor solution I, dissolving p-aminobenzamide in Prepare precursor solution II in pure water, uniformly mix precursor solution I and precursor solution II at a volume ratio of 1 to 10:1 to obtain a mixed solution; step 2, perform hydrothermal reaction on the mixed solution prepared in step 1, Water-soluble nitrogen-doped carbon quantum dots can be obtained. The invention adopts a one-step hydrothermal method to prepare water-soluble nitrogen-doped carbon quantum dots. The carbon source is rich and cheap, the preparation process is simple, the whole preparation process is pollution-free, non-toxic, green and environmentally friendly, and can be prepared in large quantities.

The invention discloses a method for preparing water-soluble carbon quantum dots from sisal hemp as a raw material. The method comprises the following steps: 1) pretreating the sisal hemp; 2) mixing deionized water and glycerol in a volume ratio of (2-5): 1 to obtain a mixed solution for standby application; 3) adding the pre-treated sisal hemp to the mixed solution obtained in the step 2), stirring the mixture, and placing the mixture in a microwave environment for microwave processing to obtain a brown solution; 4) filtering the brown solution to obtain a filtrate; 5) dialyzing the filtrate; 6) evaporating a dialysate at constant temperature to obtain the water-soluble carbon quantum dots. The water-soluble carbon quantum dots are prepared with a microwave method directly, the carbon source is rich and cheap, recovery of waste is facilitated, the preparation process is simple, the whole preparation process is non-polluting, non-toxic, green and environment-friendly, and large-scale preparation can be realized.

The invention provides a kitchen waste anaerobic digestion wastewater treating method which is used for treating wastewater produced from kitchen waste slurry after anaerobic digestion and dewatering and wastewater produced in other procedures of kitchen waste treatment. The wastewater is subjected to oil-separation primary sedimentation, water quantity and water quality regulation, first pH regulation, free ammonia stripping in an ammonia stripping tower, second pH regulation, A / O biochemical treatment, sedimentation treatment, air floatation treatment, treatment in a Fenton reactor, treatment in a coagulative sedimentation tank and treatment in a biological aerated filter in sequence. With adoption of the method, pollutants such as COD (chemical oxygen demand), BOD5 (biochemical oxygen demand), SS (suspended solids) and the like in the wastewater are removed effectively, TN (total nitrogen) and TP (total phosphorus) can be removed effectively, wastewater chroma can be reduced effectively, TN and TP removal rate is increased, the pollutants such as COD, BOD5, NH3-N, TP and the like in the treated wastewater as well as the chroma of the treated wastewater can stably meet requirements of level-1 in the integrated wastewater discharge standard (GB8978-1996), and TN is smaller than 70 mg / L.

The invention provides a bimetallic catalytic material and a preparation method and an application method thereof. The bimetallic catalytic material comprises sponge, wherein graphene oxide is arranged on the sponge, and the graphene oxide is loaded with metal cobalt and metal nickel. Due to the adoption of the technical scheme, compared with the prior art, the bimetallic catalytic material has the advantages of being easy to recycle and avoiding secondary pollution to the environment; the cobalt and nickel bimetals are used as active sites and have synergistic effects, and the degradation effect is much higher than that of single metal catalytic materials.

The invention discloses a method for preparing a water-soluble yellow fluorescent carbon quantum dot by taking bagasse as a raw material. The method comprises the following steps of 1) performing bagasse pretreatment; 2) mixing ultrapure water and glycerol according to the volume ratio of (2-5):1 to obtain a mixed solution for later use; 3) adding the bagasse obtained through pretreatment into the mixed solution obtained in the step 2) to obtain a mixed solution, stirring, putting the mixed solution under a microwave environment and performing microwave treatment to obtain a brown solution; 4) filtering the brown solution to obtain filtrate; 5) dialyzing the filtrate to obtain dialysate; and 6) evaporating the dialysate under the condition of constant temperature to obtain the water-soluble yellow fluorescent carbon quantum dot. The water-soluble yellow fluorescent carbon quantum dot prepared by the method has the advantages of high water solubility, fluorescence stability, high biocompatibility, no pollution and no toxin, and has an important application value in the fields of biomarkers, biosensing, fluorescence probes, anti-fake markers and immunochromatography products.

The invention discloses a method for preparing high-quality pork feed by using feed mulberry. According to the invention, the method comprises the steps of harvesting feed mulberry in a mowing period,conducting smashing directly by a pulverizer to obtain particles of 0.5 cm, adjusting the moisture content of the particles, then uniformly mixing the particles with a special fermentation preparation, conducting compacting and sealing, then conducting anaerobic fresh storage, and after 2 weeks and anaerobic fermentation is stable, mixing the fermented material with other feeds for direct feeding. The stored feed mulberry of the invention overcomes the problem of poor palatability of feed mulberry after silage, improves the palatability of the pig, and increases the feed intake. The technology is simple in preparation, and is less affected by external environmental conditions, and all farms can separately produce the feed mulberry of the invention. The fermented feed mulberry does not require secondary processing, and does not require additional storage steps, thereby solving the problem of feed mulberry storage, achieving annual supply and reducing nutrient loss during storage.

The invention discloses a method for preparing water-soluble carbon quantum dots from banana peel as a raw material. The method comprises the following steps: 1) pretreating the banana peel; 2) preparing a polyethylene glycol aqueous solution with concentration being 0.05-0.2 g / ml; 3) adding the pre-treated banana peel to the polyethylene glycol solution, stirring the mixture, and placing the mixture at 180 DEG C to react for 12 h to obtain a brown solution; 4) filtering the brown solution to obtain a filtrate; 5) dialyzing the filtrate; 6) evaporating a dialysate at constant temperature to obtain the water-soluble carbon quantum dots. The water-soluble carbon quantum dots are synthesized from waste banana peel in life as a carbon source with a hydrothermal method in one step, the carbon source is rich, the problem of recovery of domestic waste can be solved, the synthesis process is simple, the whole process is green and environment-friendly, and large-scale preparation can be realized.

The invention belongs to the technical field of adsorbing storing of natural gas, and specifically relates to a carbon aerogel natural gas adsorbing agent and a preparation method and application thereof. The method comprises the following steps: (1) stirring and dissolving biomass raw materials in a solvent; quickly freezing; and performing freezing drying to obtain a carbon aerogel precursor; and (2) carbonizing the carbon aerogel precursor obtained in step (1) under a protecting atmosphere; and activating the product in a chemical manner so as to obtain the carbo aerogel natural gas adsorbing agent. The carbon aerogel material prepared by the method has the advantages of being high in abrasion resistance and mechanical intensity while high specific surface area remains; any adhering agent is not used in the forming process, so that the preparation cost and the production time are greatly decreased; in addition, the mechanical activating manner is carried out, so that the specific surface and the porosity can be further increased.

The invention discloses a habituation culture method of psychrophilic methanogens. The habituation culture method comprises the following steps: 1) feeding a habituation culture medium into a culture device, introducing nitrogen to remove oxygen, sterilizing at high temperature, and adding 0.001g of sodium acetate, sodium formate, methanol, cellulose acetate, chitosan and prebiotics respectively, thereby obtaining a habituation culture device; 2) crushing sludge bacteria, adding activated starch, and putting the mixture to stand, thereby obtaining an activated starch-sludge bacterium; 3) inoculating the bacterium obtained in the step 2) to the habituation culture device of the step 1), and culturing for 4-5 days at 8 DEG C; 4) detecting, changing the temperature through a temperature control system when bubbles are generated, and implementing temperature-variable habituation culture; and 5) stopping temperature variation when the bubbles are not increased any more, and replenishing materials to generate bubbles continuously until the gas generation amount is completely stable after 12 days, thereby completing enrichment of psychrophilic methanogens. By adopting the habituation culture method of psychrophilic methanogens, the formation speed of bacterial colonies is remarkably increased, and the enrichment effect is improved.

The invention discloses a medium and culture method of beauveria bassiana. The medium includes a liquid medium and a solid medium. The liquid medium comprises the following components, by weight part, 5-15 parts of glucose, 2-8 parts of yeast powder, 3-10 parts of potato juice, 5-20 parts of peptone, 5-10 parts of silkworm powder, 1-5 parts of potassium dihydrogen phosphate, 1-5 parts of cephalosporin and 20-80 parts of sterile water. The solid medium comprises the following components, by weight part, 5-15 parts of glucose, 5-15 parts of corn flour, 5-10 parts of silkworm powder, 10-20 parts of lactose, 10-20 parts of wheat bran and 1-5 parts of cephalosporin. Beauveria bassiana conidia obtained from the medium have great power of invading host insects, are less polluted by other bacteria, and are high in success rate. The breeding period is short, and the quality of beauveria bassiana conidia is stable.

The invention discloses a needle mushroom cultivation material and a production method thereof. The needle mushroom cultivation material is produced from the following raw materials in parts by weight: 45-55 parts of dried chicken manure, 60-70 parts of wood chip powder, 20-25 parts of soybean powder, 6-8 parts of gelatin waste, 18-22 parts of earthwormcast, 6-10 parts of iron ore powder, 10-12 parts of calcium superphosphate, 15-20 parts of nano silicon dioxide, 8-10 parts of dry watermelon peel, 4-6 parts of coptis chinensis powder, 3-4 parts of lignocellulose, 6-12 parts of gypsum powder, 8-10 parts of calcium stearate, 4-6 parts of yeast extract powder, 5-10 parts of chitosan and 25-30 parts of polyvinyl alcohol. Compared with the prior art, the needle mushroom cultivation material disclosed by the invention is reasonable in nutrition ratio, is rich in carbon source and nitrogen source and utilizes waste, so that environmental pollution is reduced, waste materials are changed into things of value, the environment is protected, resource and energy source are saved, when the cultivation material disclosed by the invention is adopted for cultivation, the needle mushroom can grow vigorously, yield is greatly increased, and economic benefit is improved.

The invention discloses a cultivation method for intercropping of corn and potatoes, and relates to a cultivation method for intercropping of corn and potatoes. The problem that an existing method forintercropping of corn and potatoes cannot sufficiently utilize optical energy and is low in soil resource utilization rate is solved. The method comprises the steps of 1 soil preparation, 2 seed selection and processing, 3 field arrangement, 4 proper sowing and rational close planting, 5 scientific fertilization, 6 precision management and 7 proper harvesting. Compared with monoculture of corn, the soil organic content is increased by 8.5%, and the soil total nitrogen content is increased by 6.4%; the bacterial community number in surface soil microflora is increased by 15.4%, and the mycorrhiza fungi community is increased by 32.6%. The potato yield is 8,700 kg / hm<2>, the corn yield is 11,395 kg / hm<2>, and the corn and potato total income is increased by 4,590 yuan / hm<2>. The method is applicable to the field of corn and potato planting.

The invention discloses a method and device for dewatering sludge with fly ash instead of lime and relates to a technology of carrying out plate-frame pressure filtration with fly ash produced by a power plant instead of lime, a production process and formula are appropriately adjusted, and then fly ash is directly used for dewatering sludge. Compared with the prior art, the method and device which are disclosed by the invention have the characteristics of saving energy, saving raw materials and being environment-friendly, are widely applied to sewage treatment and have good popularization andapplication values.

The invention belongs to the technical field of edible fungus production and cultivation, and discloses a needle mushroom multi-fruiting nutritional supplement solution, which is prepared from the components in parts by weight: 20 to 30 parts of monopotassium phosphate, 10 to 20 parts of calcium sulfate, 5 to 15 parts of magnesium sulfate, 20 to 30 parts of organic matter mixed liquor, 20 to 40 parts of nutrition additives, 2 to 6 parts of decavitamin, 1 to 5 parts of microelement, 3 to 8 parts of glucose, 3 to 10 parts of saccharose, 0.5 to 2 parts of corn germ oil, 1 to 5 parts of citric acid and 500 to 1000 parts of water. The nutritional supplement solution provided by the invention is specially prepared according to a growth characteristic of needle mushrooms, the needle mushrooms canbe promoted to fruit for the second time and even for multiple times by using the nutritional supplement solution provided by the invention, and comprehensive nutrition is provided for multi-fruitingof the needle mushrooms, so that the total yield of the needle mushrooms is improved, nutritional ingredients in a culture medium are fully utilized, environment waste is reduced, the feasibility ishigh, and the cultivation cost of the needle mushrooms is greatly reduced.

The invention relates to a method for treating coking wastewater biologically. The technical scheme is that: the method comprises the following steps of: based on volume percent fraction, making 0 to 60 percent of pretreated coking wastewater enter an aerobic decarbonization tank (1) for decarbonization through a valve A, and staying for 6 to 12 hours; making the decarbonized coking wastewater enter an anoxic denitrification tank (2), simultaneously making 40 to 100 percent of pretreated coking wastewater enter the anoxic denitrification tank (2) through a valve B, and staying for 15 to 25 hours; making the wastewater enter an aerobic nitrification tank (3), and staying for 20 to 30 hours; and settling the wastewater in a secondary sedimentation tank (4) for 2 to 3 hours, refluxing clear water in a reflux ratio of 300 to 500 percent into the anoxic denitrification tank (2) for denitrification, refluxing sludge in a reflux ratio of 50 to 100 percent into the aerobic decarbonization tank (1) and the anoxic denitrification tank (2), and coagulating effluent of the secondary sedimentation tank (4) and then discharging the wastewater after the wastewater meets the standard. In the process, the COD and NH3-N in the wastewater all meet the first-class requirement of integrated wastewater discharge standard; the denitrification rate of the system is high; and the concentration of nitrate nitrogen in the effluent is low.

The invention discloses a method for raising colored pheasants by using paper mulberry tree leaves and relates to the field of chicken culture. The raising is divided into three stages, i.e., chickling raising, growing chicken raising and grown chicken raising, a feed formula adopted during the raising of each stage comprises a concentrated feed, fermented paper mulberry tree leaves and a premix, proportioning ratios of the concentrated feed to the fermented paper mulberry tree leaves to the premix in the three stages are all different, and the proportion of the fermented paper mulberry tree leaves gradually increases; and the fermented paper mulberry tree leaves are prepared through fermenting several kinds of microbes, i.e., streptomyces, bacillus licheniformis, aspergillus oryzae, Lactobacillus acidophilus and Streptococcus lactis with urea, sugar-cane juice, potassium chloride, magnesium sulfate and maize meal jointly. According to the method for raising the colored pheasants, disclosed by the invention, the quality of fermentation of the paper mulberry tree leaves is improved, and the quality of chicken is further improved; and the raising ratio of the concentrated feed to forage is reasonably prepared according to growth characteristics of the colored pheasants, so that the aims of saving the concentrated feed, reducing the cost and improving the economic benefit are achieved.

The invention belongs to the technical fields of environmental protection and agriculture, and relates to a method for reducing heavy metal cadmium in plants. The method for reducing heavy metal cadmium in the plants contains the following steps: applying a soil conditioner into cadmium-contaminated soil, mixing the soil conditioner and the cadmium-contaminated soil evenly, and then sowing seeds in the cadmium-contaminated soil to plant the plants; after the seeds are sown, spraying a resistance control agent at least once; and the soil conditioner is produced by mixing at least biochar and acadmium-tolerant bacterium solution and conducting drying. The method is applied for reducing the content of heavy metal in the soil and the content of heavy metal in the plants, through combined remediation of the biochar and cadmium-tolerant bacteria, a function of the cadmium-tolerant bacteria of fixating heavy metal, especially heavy metal cadmium, in the soil can be further enhanced, and heavy metal absorption of the plants is reduced.

The invention provides a compound microbial liquid inoculant and an application thereof, and belongs to the technical field of microorganisms. The compound microbial liquid inoculant comprises components in parts by mass as follows: 24-40 parts of brown sugar, 2-6 parts of glucose, 1-3 parts of peptone, 1-3 parts of yeast extract, 75-125 parts of compound bacteria and 1500-2200 parts of water, wherein the compound bacteria comprise Lactobacillus rhamnosus, Bacillus subtilis, saccharomyces and photosynthetic bacteria, and total quantity of effective viable bacteria in the compound bacteria is larger than or equal to 1*10<8> CFU / g. The compound microbial liquid inoculant is not affected by soil environment, the compound bacteria can propagate rapidly by nutrients of the inoculant and occupyecological niche in soil, and reproduction of harmful bacteria is reduced greatly.

The invention relates to the technical field of water pollution control, and in particular relates to a composite microbial preparation for water pollution treatment and a preparation method of the composite microbial preparation. The composite microbial preparation comprises microorganisms and a composite carrier, preparation raw materials of the composite carrier comprises modified retinervus luffae fructus, rice husks, peanut shells and agar-modified chitosan, and a mass ratio of the modified retinervus luffae fructus to the rice husks to the peanut shells to the agar-modified chitosan is 2:0.3:0.4:0.3, wherein the microorganisms are prepared by domestication culture of aerobic sludge, and the modified retinervus luffae fructus is prepared by performing carbonization heat treatment on retinervus luffae fructus, performing plasma treatment and performing shell powder activation treatment. The composite microbial preparation prepared by the method disclosed by the invention has a solid carbon source, the natural retinervus luffae fructus with an overlapped net-shaped structure is utilized to expand a lodging space of the microorganisms, and a contact area of the microorganisms andthe carbon source is increased, so that the microorganisms in each position are guaranteed to have carbon source supply; and the composite microbial preparation provides nutrients for reproduction ofthe microorganisms, and can be widely used in restoration treatment of industrial wastewater, domestic sewage and groundwater.

The invention discloses a nutrient soil and application of the soil in sand control and greening. The raw material composition of the nutrient soil comprises: 70-80 parts by weight of advanced anaerobic digestion sludge, 5-15 parts by weight of sludge-based biochar soil, 2-5 parts by weight of carbonized sludge, 2.5-5 parts by weight of potassium fulvic acid, and 5-10 parts by weight of polyacrylamide. According to the present invention, sandy soil nutrient, soil bacterial community diversity, species richness and species composition uniformity are improved, the sandy soil nutrient grade is upgraded from the original level 6 to more than level 2; compared with the original soil, the total amount of nitrogen, phosphorus and potassium in the soil increases by 97.08%, the organic content increases by 119.86%, the water content increases by 65.22%, the quality of sandy soil is significantly improved, and the capacity of soil fertility and water retention are greatly improved; and after the application of the nutrient soil of the invention, the heavy metal pollution degree and potential pollution risk of the soil are both low, and the soil is in a safe state.