60results about How to "Play a role in degradation" patented technology

The invention discloses a method for reducing NOx emission in the iron ore sintering process. Firstly, conventional sintering fuel coke powder or anthracite is screened into three grain sizes of -1 mm, 1-3 mm and +3 mm; the coke powder or anthracite with the grain size being -1 mm and high-reaction-activity fossil fuel or biomass fuel with the grain size being -1 mm are pressed into fuel particles with the grain size being 1-3 mm; the fuel particles obtained through pressing with the grain size being 1-3 mm and the coke powder or anthracite obtained through screening with the grain size being 1-3 mm are added into fine particle iron ore, part of coarse particle iron ore, flux and return mines to be subjected to granulation in a rotary drum mixer; and the granulated mixed material, modified coke powder or anthracite with the particle size being +3 mm and the remaining coarse particle iron ore are subjected to secondary mixing granulation, and the obtained mixed material is distributed and then ignited and sintered. Generation of fossil fuel NOx in each grain size is controlled specifically according to the features of NOx generated by the fossil fuel in different grain sizes, so that generation of NOx is reduced to a greater extent to reduce NOx emission, and NOx emission is reduced by 20%-40%.

The invention discloses a device for evaluating the automobile exhaust degradation effect of an OGFC mixture. The device comprises a closed container, an automobile engine, an automobile exhaust analyzer, a track board test piece, and air supplying devices, wherein the air supplying devices are arranged in the closed container. The invention further discloses an evaluation method which comprises the following steps in sequence: preparing the track board test piece, and generating automobile exhaust; simulating the degradation of automobile exhaust on a pavement and testing the concentration of each gas in the automobile exhaust; processing data. The track board test piece is prepared from the OGFC mixture which is added with a photocatalytic material; the evaluation index, used for evaluating the automobile exhaust degradation effect, of the OGFC mixture is taken as the degradation rate. The evaluation device can simulate the automobile exhaust degradation processes of the OGFC mixture in different illumination conditions by controlling the number of ultraviolet lamp tubes. The evaluation method is accurate and reliable, and coincides with the automobile exhaust degradation situation on a real pavement.

The invention relates to the technical field of environment friendly material air cleaning, and particularly discloses a photocatalyst air cleaning agent and a preparing method thereof. The photocatalyst air cleaning agent comprises, by weight, 1-5% of nanometer titanium dioxide, 0.6-1% of a dispersant, 0.3-0.7% of a defoamer, 2-5% of water-soluble chitosan and 88-96% of deionized water. The product can decompose and react under visible light, can effectively prevent harms caused by formaldehyde release after decoration to human body health, and has double sterilizing and antibacterial functions.

The invention relates to the technical field of environmental protection and in particular relates to functional soil for performing in-situ covering inhibition on phosphorus release of sediments in a black and odorous water body and a using method of the functional soil. The preparation method of the functional soil comprises the following steps: mixing and stirring natural materials and a stabilizer according to a ratio, and curing at room temperature for a period of time, thereby obtaining the functional soil, wherein the stabilizer is one or a mixture of several of potassium permanganate, hydrogen peroxide, calcium nitrate and ferric trichloride. According to the functional soil for performing in-situ covering inhibition on phosphorus release of sediments in the black and odorous water body and the using method of the functional soil provided by the invention, the passivation effect of phosphorus in the sediments can be effectively increased, and in the process of adding the stabilizer into natural red clay, in addition to the achievement of the effects of the natural red clay, the stabilizer achieves the effects of adsorbing and fixing phosphorus in the sediments and improving the sediment reducing environment. Meanwhile, the coverage thickness of the functional soil is decreased, and the influences on activity places of bentonic organisms and ecological structures are alleviated.

The invention discloses a biological mildew removing agent of livestock and poultry for feeds and an application thereof. The biological mildew removing agent comprises the following raw materials in parts by weight: 50-75 parts of compound strain fermentation substance, 6-12 parts of catalase, 8-10 parts of thymol, 5-8 parts of yeast cell wall polysaccharide, 2-5 parts of vitamin C, 2-5 parts of vitamin E and 1-2 parts of glucose oxidase. According to the invention, a brand new biological mildew removing agent is obtained by combining compound strain fermentation substance, catalase, thymol, yeast cell wall polysaccharide, vitamin C, vitamin E and glucose oxidase and performing reasonable matching. The biological mildew removing agent has excellent mycotoxin degradation and can greatly reduce the degradation effect of the mildew removing agent to the mycotoxin. Experiments prove that the degradation rates of the biological mildew removing agent to AFB1, ZEN and DON are respectively as follows: AFB1 97.81+ / -0.09%, ZEN 93.11+ / -10.22% and DON 97.48+ / -12.35%; and the biological mildew removing agent has excellent degradation to FB1 and OTA, and the degradation rates are respectively as follows: FB1 64.315+ / -0.11% and OTA 67.43+ / -9.25%.

The invention provides a microbial soil improving agent for restoring petroleum polluted soil. A product is prepared from a degradation bacterial agent, an additive and a biosurfactant, wherein the degradation bacterial agent is prepared from pseudomonas, bacillus, Acinetobacter, microzyme, phosphate-solubilizing bacteria, azotobacterial, nitrobacteria and photosynthetic bacteria; the additive isprepared from the following ingredients in parts by weight: 20 to 35 parts of wormcast, 80 to 120 parts of bentonite, 1 to 10 parts of chitosan, 10 to 20 parts of kaolin, 5 to 9 parts of borax, 25 to35 parts of crop stalks, 10 to 15 parts of rice hull powder, 10 to 15 parts of dry seaweed, 1 to 5 parts of organic acid, 5 to 10 parts of vermiculite, 10 to 20 parts of shell powder and 20 to 25 parts of compound amino acid. The microbial soil improving agent for restoring petroleum polluted soil has the advantages that the soil fertility is improved; the petroleum in the soil can be degraded; the goal of governing the petroleum polluted soil is achieved.

The present invention belongs to the technical field of soil remediation and discloses a polycyclic aromatic hydrocarbon contaminated soil remediation material. The polycyclic aromatic hydrocarbon contaminated soil remediation material comprises the following components in parts by weight: diatomaceous earth, peat soil, humic acid, corn cob, nutrients, a surfactant, an oxidant and a compound microbial agent; the nutrients comprise rice bran, (NH4)2HPO4, urea, calcium superphosphate and plant ash; the surfactant is an anionic and non-ionic mixed surfactant; the oxidant is one of hydrogen peroxide activated sodium persulfate, potassium hydrogen persulfate or a Fenton reagent; the compound microbial agent comprises pseudomonadaceae powder, bacillus powder and fusarium powder; and the weight ratio of the pseudomonadaceae powder, bacillus powder and fusarium powder is 3:(1-5):(2-5). Compared with the prior art, beneficial effects are as follows: the polycyclic aromatic hydrocarbon contaminated soil remediation material is capable of degrading polycyclic aromatic hydrocarbons in the soil and also has an improved effect on the soil conditions of the soil.

The invention discloses a preparation method of a permeable reaction wall filled with microorganisms fixed by biological carbon, and belongs to the field of groundwater pollution remediation. The permeable reaction wall provided by the invention comprises a four-layer structure comprising a coal cinder water inlet layer, an iron powder mixed filler layer, a fixed microorganism layer and a coal cinder water outlet layer, wherein the coal cinder water inlet layer, the coal cinder water outlet layer and the iron powder mixed filler layer can be used to achieve a purpose of reducing dissolved oxygen in water; biological carbon is used for preparing fixing particles of degrading bacteria in the fixed microorganism layer; the biological carbon is mixed with quartz sand, and then the obtained mixture fills the permeable reaction wall; and the coal cinder water outlet layer is added downstream. Pollutants in underground water can be degraded by applying fixed anaerobic microorganisms, so thatstrain loss is reduced, and sewage treatment efficiency can be improved. In addition, the permeable reaction wall is low in cost, low in microorganism loss, high in activity and high in impact resistance, and can be applied to anaerobic microorganisms.

The invention relates to Pichia kluyveri. The Pichia kluyveri is collected in China General Microbiological Culture Collection Center of China Committee for Culture Collection of Microorganisms on 24April, 2020, has an accession number of CGMCC No. 19722 and is called after Pichia kluyveri WTB20042302. The strain can utilize citric acid and tartaric acid, has degradation capability to citric acid, lactic acid, formic acid, acetic acid and succinic acid in the fruit wine and is especially remarkable in degradation capability to the citric acid; and the content of active matters such as total phenols, total flavonoids and anthocyanidin can be effectively increased, and the oxidation resisting level of the fruit wine is increased. In addition, the strain has a biological control effect superior to that of the existing known biological control strains and has a remarkable inhibiting action on botrytis cinerea. Therefore, the strain can be applied to post-harvested storage freshness preserving or fruit wine acid-reduced fermentation of fruits and is a preferable strain capable of being applied to an entire process of a fruit wine preparation process.

The invention relates to a polypeptide preparation method, and particularly relates to a preparation method of earthworm polypeptide extract, the preparation method of the earthworm polypeptide extract includes (1) pretreatment, to be more specific, taking fresh earthworms, washing clean, homogenizing, and performing ultrasonic extraction; (2) fermentation treatment, to be more specific, adding mixed strains into a solid-liquid mixture, adjusting pH, and fermenting; (3) first enzymolysis, to be more specific, adding bromelain into the fermentation mixture, adjusting pH, and inactivating enzymes to obtain an enzymolysis substance; (4) second enzymolysis, to be more specific, adding pepsin into the enzymolysis substance for enzymolysis treatment, centrifuging the enzymolysis substance for removal of slag, and collecting supernatant; and (5) ultrafiltration treatment, to be more specific, taking the supernatant collated by the step (4) for ultrafiltration with an ultrafiltration membrane, and using a nanofiltration membrane for interception of the ultrafiltered filtrate, and lyophilizing the obtained interception liquid to obtain earthworm peptides. The earthworm polypeptide extract prepared by combination of the fermentation and the enzymolysis has good color, no fishy odor and bitter taste, and has better antioxidant activity, and the method also greatly improves the extraction rate of the polypeptides.

The invention discloses a remediation agent for remediating aged petroleum contaminated soil. The remediation agent is prepared from the following components: a compound surfactant microemulsion, rhamnolipid, persulfate and quick lime. A using method of the agent comprises the step of preparing the use amounts of the components according to the pollution degree of soil, wherein the use amounts of the components are respectively a light pollution use amount, a moderate pollution use amount and a severe pollution use amount. The remediation agent is green and environmentally-friendly, and all the components are common agents in environmental protection and restoration engineering and are easy to obtain; pollutants are finally decomposed into CO2, H2O and other non-toxic substances, so the removal rate of target pollutants is high, and secondary pollution to the environment is avoided; and a remediation method is easy and convenient to operate, short in repairing time, low in cost, high in safety and capable of achieving engineering application.

The invention provides a range hood and a cleaning method thereof. The range hood comprises a range hood body, a steam cleaning system and an oil contamination decomposing system. The steam cleaning system is used for conducting steam cleaning on the range hood body. The oil contamination decomposing system is used for spraying an oil contamination cleanser into the range hood body. The oil contamination cleanser can be used for decomposing oil contamination in the range hood body. According to the range hood provided by the technical scheme, due to the fact that the oil contamination cleanser is added when the range hood body is subjected to steam cleaning and can degrading the oil contamination, the steam cleaning system of the range hood can be matched with the oil contamination decomposing system to work so as to clean a volute, an impeller and a filter screen in the range hood body efficiently and thoroughly, and thus the problem of cleaning of the range hood of a user is solved. According to the specific process during specific cleaning, steam cleaning can be conducted first, then the oil contamination cleanser is sprayed, and then steam cleaning is conducted again; and the oil contamination cleanser can be sprayed directly and then steam cleaning is conducted.

The invention discloses a production method of a lotus root special fertilizer. The production method comprises the steps of organic fertilizer preparation, proportioning, pelleting and the like. As for the lotus root special fertilizer, according to the fertilizer requirement characteristic of lotus root growth, through compounding of an organic fertilizer and an inorganic fertilizer, the content proportion of nitrogen to phosphorus to potassium is reasonable, the lotus root special fertilizer contains organic matter and a medium quantity of or a trace of element fertilizers, nutrient elements needed by lotus root growth can be provided, meanwhile, the soil environment is improved, the content of the organic matter in soil is increased, the fertilizer utilization rate is increased, and accordingly the effect of increasing both production and income is achieved. After the lotus root special fertilizer is applied, the yield of lotus roots is increased by 20% or over, the production increasing effect is remarkable, and economic benefits are remarkable. In addition, the content of crude fibers of the lotus roots cultivated through the lotus root special fertilizer is low, the content of vitamin C and reducing sugar is high, and by applying the lotus root special fertilizer, a great effect of improving the quality of the lotus roots is achieved.

The invention discloses a production method of a special fertilizer for a banana. The production method comprises the following steps of the preparation of an organic fertilizer, proportioning, granulation and the like. The special fertilizer for the banana is reasonable in the content ratio of nitrogen, phosphorus and potassium according to the fertilizer requirement characteristic of the growth of the banana and through the compounding of the organic fertilizer and an inorganic fertilizer, further, contains an organic matter, and is a medium-trace-element fertilizer; nutrient elements needed by the growth of the banana can be provided; meanwhile, a soil environment is ameliorated; the content of a soil organic matter is improved, the utilization rate of a fertilizer is improved; thus, the effects of increasing a yield and increasing an income are achieved; by adopting the special fertilizer for the banana, which is provided by the invention, the yield of the banana is increased by 15 percent or above; the yield increasing effect is obvious; the economic benefit is obvious.

The invention discloses a production method of special fertilizer for sugarcane. The production method comprises steps of preparation of organic fertilizer, material blending, granulation and the like. According to the fertilizer requiring characteristics of sugarcane growth, by compounding organic fertilizer and inorganic fertilize, reasonably proportioning content of N, P and K and containing organic matter, secondary elements and trace elements, the special fertilizer for the sugarcane can provide nutrient elements required by sugarcane growth, improve soil environment and increase organic content of soil, the fertilizer utilization rate is increased, and both production and income are increased. Compared with conventional fertilizer application, after the special fertilizer for the sugarcane is applied to the sugarcane, the yield per mu is increased by 20% or higher, the sugar per mu is increased by 1% or higher, and the economic performance is improved obviously.

The invention relates to a wickerhamomyces anomalus strain. The wickerhamomyces anomalus strain is preserved in the China general microbiological culture collection centre on April 24th, 2020; the preservation number of the wickerhamomyces anomalus strain is CGMCC No.19723; and the wickerhamomyces anomalus strain is named as Wickerhamomyces anomalus WTB20042303. The strain can effectively utilizecitric acid and tartaric acid, has degradation capacity on citric acid, lactic acid, formic acid, acetic acid and succinic acid in the fruit wine, and particularly has remarkable degradation capacityon citric acid; and the strain can effectively improve the content of active matters, such as total phenols, total flavonoids and anthocyanin, and improve the antioxidant level of the fruit wine. In addition, the strain also has a biocontrol effect superior to that of an existing known biocontrol strain, and has a remarkable inhibition effect on botrytis cinerea. Therefore, the strain can be applied to postharvest storage and preservation of fruits or deacidification and fermentation of fruit wine, and is a preferred strain, which can be applied to the whole process of a fruit wine preparationprocess.

The invention discloses a preparation method of cow manure organic fertilizer. The preparation method is characterized by comprising steps as follows: (1) cow manure pretreatment: cow manure is squeezed and aired until the moisture content ranges from 30% to 40%; (2) pulverization treatment: a pulverizer performs pulverization treatment; (3) mixing: pulverized rice husk and cow manure are mixed uniformly; (4) ammoniation treatment: 9%-11% of ammonium hydroxide is added for ammoniation treatment; (5) fermentation in a fermentation pool: a leavening agent accounting for 3%-6% of the total mass of the mixture is added, and fermentation is performed in the fermentation pool; (6) deodorized fermentation: a fertilizer leavening agent accounting for 2%-3% of the total mass of the mixture is added for layered fermentation; (7) drying and granulation: the granular cow manure organic fertilizer with the moisture ranging from 15% to18% is prepared. The obtained cow manure fertilizer contains rich nutrition, ingredients are decomposed sufficiently, operation is simple, practicability is realized, and the utilization rate of the cow manure and rice husk is increased.

The invention relates to the technical fields of waste material utilization and treatment of sediment from black odor water and eutrophic water, and in particular relates to a remediation material forthe sediment as well as preparation and application of the remediation material. The remediation material for the sediment comprises the following preparation raw materials: a biomass material, an iron-containing material and auxiliary additives, wherein the auxiliary additives comprise a dispersing agent and a binder. According to the remediation material provided by the invention, a formula ofa remediation material for water sediment is improved, so that biomass waste resources rich in a cellulose component, such as discarded reed stalks, straw and wood chips can be recycled, waste resources such as iron-containing waste ore or waste residues can also be recycled, and the finally formed product can be used for in-situ treatment of the water sediment to reduce or even eliminate releaseof pollutants from the water sediment.

The invention relates to the technical field of catalytic oxidation combustion purification equipment, and discloses a device for purification treatment of exhaust gas of catalytic oxidation combustion. The device comprises a support table, an air guiding port is formed in the middle of the top of a device body, and an air guiding box is fixedly connected to the middle of the top of a bottom plate. The air guiding box is clamped to the middle of the bottom of the device body, and the top of the air guiding box is fixedly connected with a funnel. Screen cloths are fixedly connected to both sides of the funnel respectively, and the two screen cloths are fixedly connected with the two sides of the inner wall of the bottom of the device body respectively. A supporting frame is fixedly connected to the inner wall of the top of each screen cloth, and the two support frames are fixedly connected through a filter screen. A reverse osmosis membrane is fixedly connected to the top of the filterscreen. An activated carbon layer is fixedly connected to the top of the reverse osmosis membrane. According to the device for purification treatment of exhaust gas of catalytic oxidation combustion,exhaust gas generated after combustion is discharged into the device body through the air guiding port, and adsorption treatment is conducted through the activated carbon layer, so that exhaust gas can be degraded.

The invention discloses an environment-friendly and easy-to-degrade type material for a mobile phone shell. The environment-friendly and easy-to-degrade type material for mobile phone shell is prepared from the following raw materials in parts by weight: 34 to 40 parts of polylactic resin, 26 to 30 parts of ABS (Acrylonitrile Butadiene Styrene) resin, 22 to 26 parts of polybutylene succinate, 26 to 28 parts of modified corn starch, 14 to 16 parts of melamine, 16 to 18 parts of attapulgite, 8 to 10 parts of kaolin, 4 to 10 parts of graphene, 5 to 8 parts of a coupling agent, 4 to 6 parts of a plasticizer, 2 to 6 parts of a degradation agent and 1 to 2 parts of filler. The environment-friendly and easy-to-degrade type material for the mobile phone shell, provided by the invention, has excellent degradation performance, can be rapidly degraded under a natural state and has relatively high practical value and a good application prospect.

The invention discloses a processing method for appetizing, fragrant, tender and drunken chicken, which is characterized in that it includes the following aspects: (1) smoking, selecting reed chicken that has been cultivated for 1-2 years as the processing raw material, using mint extract for airtight storage, and then carrying out Smoked; (2) pickled, filling the smoked chicken belly with seasoning powder for vacuum fermentation, and then soaking the chicken in salt water to marinate; (3) drunk processing, first immersing the marinated chicken in a tank with distiller's grains Heat up and simmer, and then immerse in concentrated rice wine to simmer; (4) Roast, fill the belly of the drunken chicken with seasoning powder, use the stirred salt to wrap the drunken chicken, and wrap the outermost layer with aluminum foil. Roasting; (5) Baking, baking the roasted chicken at a low temperature to a moisture content of 16%-20%; (6) Sterilization packaging, using ultraviolet light to sterilize the baked chicken, and vacuum packaging to obtain the finished drunken chicken.

The invention discloses a urea peroxide and ferroporphyrin oxidation based soil remediation method. The method is characterized in that environmentally-friendly urea peroxide and ferroporphyrin oxidation is carried out to degrade organic pollutants, wherein urea peroxide is capable of decomposing and generating H2O2; H2O2 reacts with a free radical of ferroporphyrin; a plurality of active free radicals are generated, and the concentration is high; and the organic pollutants in the soil can be degraded. The remediation method is good in degrading effect, wide in applicable scope, and quick to remediate; in addition, the adopted device is simple; the cost is low; and the polluted soil can be effectively remediated.

The invention discloses a high efficiency air purification system with a catalytic oxidation function. The high efficiency air purification system with the catalytic oxidation function comprises a shell, the shell is internally provided with a filter A, a draught fan A, a draught fan B and a catalytic oxidation unit which are connected in sequence. The catalytic oxidation unit and the fan draughtA are connected with a filter B, a three-way mixer selector valve is arranged at the inlet of the filter A, the filter A is connected to the end opening of the three-way mixer selector valve, and a connecting pipe of the three-way mixer selector valve and the filter A is provided with a multi-functional sensor. The end opening B of the three-way mixer selector valve is an outdoor air inlet, the end opening C of the three-way mixer selector valve is an indoor air inlet, and a cleaned air outlet is formed in the filter B. The high efficiency air purification system with the catalytic oxidation function is used for efficiently decomposing toxic and harmful gases in the air and achieving green sterilization at the same time.

The invention discloses a water treatment system. The system comprises: an electrolysis module, wherein the electrolysis module comprises an electrolytic tank provided with a water inlet port and a water outlet port which are used for being connected with a water inlet pipe and a water outlet pipe respectively; a power supply module used for outputting electrolysis voltage and comprising a positive electrode end and a negative electrode end; and a plurality of electrolytic sheets which are fixed in the electrolytic tank, wherein each electrolytic sheet comprises a positive electrode sheet connected with the positive electrode end and a negative electrode sheet connected with the negative electrode end, and the positive electrode sheets and the negative electrode sheets are arranged in a staggered manner. According to the water treatment system disclosed by the invention, the electrolysis module is arranged in the water path, the electrolysis module is provided with the multi-array electrolysis sheets and can be used for electrolyzing incoming water, HClO generated in the electrolysis process plays a role in degrading bacteria, pesticide residues and the like on fruits, vegetables and tableware, and in addition, hydrogen and oxygen generated in the electrolysis process are dissolved in water in a bubble form, so diffusion of electrolytic ions is accelerated, and multiple cleaning effects are achieved. In addition, the electrolysis mode is adopted, noise is avoided, and the waterway structure is simple.

The invention discloses a simple disinfection method for medicinal wastewater of a hygiene hospital, and belongs to treatment (CO2F) of sewage. The method solves the problem that no land is available for building a contact disinfection tank when certain small hospitals, hygiene hospitals or clinics treat the medicinal wastewater or the construction of a contact disinfection tank is difficult due to a geologic structure (such as rock). The contact disinfection tank is replaced by using a conduit (channel), and field pavement of a pipeline convenient for surrounding a septic tank or encircling (rounding) arrangement of an outpatient service building is combined according to the practical requirement so as to prolong the length of a contact disinfection pipeline, ensure the residence time after the sewage and a disinfecting agent are mixed and achieve the disinfection effect. The method has the advantages of low investment, convenient construction, strong adaptability and stable disinfection effect, and is suitable for sewage disinfection treatment of small hospitals and clinics in current lacking urban land.

The invention relates to a fermentation preparation for reducing pesticide residues on fruits and vegetables. The fermentation preparation comprises the following components in parts by weight: 100 parts of water, 0.05-0.2 part of mixed strains, 2-5 parts of salt and 5-15 parts of white granulated sugar, wherein the mixed strains comprise lactobacillus, streptococcus, leuconostoc, bifidobacteriumand saccharomyces cerevisiae; the weight ratio of the lactobacillus to the streptococcus to the leuconostoc to the bifidobacterium to the saccharomyces cerevisiae is (3-6): (3-6): (1-3): (0.5-2): (0.5-2). During use, the fruits and vegetables subjected to ultrasonic treatment are put into a fermentation tank containing the fermentation preparation for fermentation, and then pesticides on the fruits and vegetables can be degraded. According to the fermentation preparation disclosed by the invention, the pesticides in the fruits and vegetables are degraded by fully utilizing rich enzymes in thefermentation preparation and a cleaning complexing agent, and the variety of pesticide degradation is improved. Moreover, the pesticide degradation efficiency is improved by adding glycerin, calcium bicarbonate, alginate and other substances.

The invention discloses a bamboo powder fermentation feed. The bamboo powder fermentation feed comprises the following main raw materials by weight percent: 10-70% of bamboo powder, 10-30% of maize powder, 5-30% of cottonseed meal, 5-30% of soybean meal, 5-15% of soybean curb residue, 0.01-0.1% of glucose, 0.05-0.2% of sucrose, lactococcus lactis, lactobacillus plantarum, bacillus subtilis, bacillus cereus, trichoderma viride, beer yeast or brewing yeast. A preparation method for the bamboo powder fermentation feed comprises the steps as follows: trimming, spraying for roughly cleaning, cleaning for the second time, roughly crushing, and finely crushing to obtain fine bamboo powder; and mixing the raw materials, activating culture, enzymatically hydrolyzing microorganisms, drying and granulating, inspecting, packaging, marking and warehousing. According to the invention, a trace amount of micro harmful substances remained in the feed can be degraded.

The invention discloses a method for preparing slow-release sea cucumber bait from fish byproducts and immobilized enzymes, and solves the problem that the existing fish byproducts cannot be digested and utilized when being directly fed to sea cucumbers. The method comprises the following steps of inoculating bacteria produced bacterial strains formed by separating and screening in a fish intestinal tract in a culture medium, so as to culture a seed bacteria solution; putting fish byproduct meat paste into the seed bacteria solution, so as to be fermented to form a fermented liquid; injecting a chitosan solution into a sodium hydroxide and methyl alcohol mixed solution, so as to coagulate to form a hollow spherical chitosan carrier; putting the carrier into a glutaraldehyde aqueous solution, so as to be activated; enwrapping enzymes into the hollow spherical chitosan carrier, so as to form the immobilized enzymes; and delivering the immobilized enzymes and fermented liquid to a holothurian culture water area. The method is reasonable in technology and feasible to operate. The stability of immobilized enzymes is high, the half decay period is long, enzymolysis of the fish byproduct fermented liquid is slow, sea cucumber bait is released, and moreover, deposited residual bait is degraded, the bait casting frequency is reduced, and the labor cost is reduced.

The invention relates to Pichia kudriavzevii which is collected in the China General Microbiological Culture Collection Center on April 24th, 2020, has a collection number CGMCC No.19721 and is namedPichia kudriavzevii WTB20042301. The bacterial strain can utilize citric acid and tartaric acid, has degradation capacity for the citric acid, lactic acid, formic acid, succinic acid and acetic acid in fruit wine, and especially has outstanding degradation capacity for the citric acid, the content of active substances, including total phenols, general flavones, anthocyanin and the like, can be effectively improved, and an anti-oxidation level of the fruit wine is improved. In addition, the bacterial strain also has a biocontrol effect superior to existing known biocontrol bacterial strain, andhas an outstanding function for inhibiting Botrytis cinerea. Therefore, the bacterial strain can be applied to fruit postharvest storage and preservation or fruit wine deacidification fermentation, and is an optimal bacterial strain which can be applied to whole-process green production of the fruit wine.

The invention relates to the technical field of agricultural fertilizers, and particularly discloses a biofertilizer. The biofertilizer is prepared from the following raw materials in parts by weight: 55-65 parts of crop straws, 18-25 parts of animal manure, 4-6 parts of diamine, 3-8 parts of zinc sulfate, 1-3 parts of bacillus edaphicus, 1-3 parts of aspergillus oryzae, 1-3 parts of yeast and 4-6 parts of sugar residues. The biofertilizer is scientific in formula and abundant in nutrient; the biofertilizer is capable of playing a degrading role on macromolecular protein and crude fiber in soil through adding the aspergillus oryzae; the organic matter of the soil is improved; the soil structure is improved; the soil fertility is strengthened; and the yield of crops and the quality of fruits are improved.