34results about How to "Timely degradation" patented technology

The invention relates to a double-degradable mulching film, comprising an additive type degradable mulching film and compostable degradable mulching films arranged on two sides of the additive type degradable mulching film. The invention also relates to a specific recipe and a manufacturing method. The mulching film and the manufacturing method solve problems that the buried part of the additive type degradable mulching film is slow in degradation, and is not environmentally-protecting, and the compostable degradable mulching film is short in incubation and cannot satisfy heat insulation and soil moisture preservation requirements of crops.

The invention discloses a fast degradation on-site treatment process for kitchen garbage. The process comprises the following steps: domestic garbage and a percolate in the kitchen garbage are sortedand separated, and the separated domestic garbage is crushed into particles with diameter of 10-30 mm; the particles are stirred, and the stirred particles are squeezed and dewatered, so that the water content is 40%-60%; various enzymes are produced by microbial degradation bacteria so as to biodegrade kitchen waste in the squeezed and dewatered particles and produce organic fertilizer for recycling; the sorted and separated percolate, dilution water produced by crushing and liquid produced by squeezing and dewatering are mixed into a mixed solution, electrolysis, air floatation, hydrolytic acidification and biochemical process treatment are performed on the mixed solution for oil-water separation of the mixed solution, so that waste water produced by oil-water separation meets the discharge standard, and oil produced by oil-water separation is recycled. Residual value of the kitchen garbage can be fully utilized, the transportation cost is saved, and the kitchen garbage is rapidly degraded in time.

The invention discloses a method for denitrifying wastewater generated in the process of producing an FCC (fluid catalytic cracking) catalyst. The method comprises the step of adding nitrobacteria and nitrous acid denitrifiers to sewage, wherein the ammonia nitrogen containing sewage treatment temperature is 18-40 DEG C; the dissolved oxygen is 0.2-3mg / L; and the pH value is 7.5-8.5. The method adopts autotrophic bacteria and heterotrophic bacteria which are subjected to combination of superiority to serve as reinforced microorganisms for treating wastewater, adopts different addition modes, can achieve removal of ammonia nitrogen, total nitrogen and CODcr in the same reactor, has a good wastewater treatment effect, truly achieves short-cut nitrification and denitrification or simultaneous nitrification and denitrification of the ammonia-containing wastewater generated by producing the catalyst by being combined with high-efficiency devices, and achieves up-to-standard discharge of pollutants such as ammonia nitrogen and the like in the wastewater.

The invention discloses a denitrification method by sewage short-cut simultaneous nitrification and denitrification, comprising the following step of: adding a nitrous acid denitrifying inoculant into sewage containing ammonia and nitrogen, wherein the ammonia-nitrogen-containing sewage treatment temperature is 18-40 DEG C, dissolved oxygen is 0.1-3mg / L, and pH is 7-9. According to the method, the heterotrophic nitrobacteria are used for advantage combination as the enhanced microorganism to process wastewater, thus realizing the removal of ammonia nitrogen, total nitrogen and CODcr in a samereactor. The effect of wastewater treatment is good. The method provided by the invention is especially suitable for the purification treatment of wastewater containing ammonia nitrogen, and can be used to actually realize denitrification by short-cut nitrification and denitrification or simultaneous nitrification and denitrification.

The invention discloses methane dry fermentation compound bacteria, which comprise 25% to 45% of cellulose decomposing bacteria, 9% to 15% of protein decomposing bacteria, 8% to 15% of fat decomposing bacteria, 8% to 12% of hydrogen-producing acetogenic bacteria, 18% to 31% of sulfate reducing bacteria and 2.5% to 9.5% of methanogenic archaea according to bacterium number percentages. The compound bacteria of microorganisms with a complete methane fermentation function are capable of processing methane dry fermentation raw materials with TS content as 20% to 30% and stable in methane production effect and apt to control methane production.

The invention relates to a polyglycollide PGA-woven urethra scaffold for repairing urethral. The scaffold is prepared by a two-dimensional and triaxial method. The method comprises the steps of: (1) taking 48tex PGA filament, weaving PGA on a core rod of which a gear ratio is 132 / 28, and setting the engine speed to between 6 and 7; (2) sizing at a temperature of between 90 and 105 DEG C for 5 minutes; and (3) removing a PGA weaving layer from the core rod, soaking the PGA weaving layer in 2.5 to 3 weight percent chitosan serum for 30 minutes, naturally airing the weaving layer, then placing the weaving layer in a freeze drying environment at 50 DEG C below zero for 4 hours, and obtaining the scaffold. The method for preparing the scaffold has the advantages of simpleness and low cost; and the obtained woven urethra scaffold has the apparent morphology of a bionical urethra, and is thoroughly degraded.

The invention relates to a farmland non-point source pollution control technology and aims to provide a ditch matrix for controlling ammonia nitrogen in paddy field recession and a preparation method of the ditch matrix in order to solve the problem that the matrix at the bottom of a paddy field recession ditch has a poor purification effect for ammonia nitrogen. The matrix is composed of meadow burozem soil, sand, activated sludge, coal cinder and Paracoccus denitrification sp. The concrete preparation method comprises the steps of firstly, treating sand, meadow burozem soil and activated sludge, and culturing Paracoccus denitrification sp.; then, adding sand into meadow burozem soil; next, adding activated sludge into the mixture; adding coal cinder into the mixture; inoculating a bacterial liquid into the mixture; and uniformly mixing the mixture to obtain the ditch matrix for controlling ammonia nitrogen in paddy field recession. The novel matrix is good in ammonia nitrogen adsorption performance and capable of providing a favorable metabolization environment for denitrifying bacteria and ensuring that microbial degradation can be synchronously finished and a complete purification effect is achieved after ammonia nitrogen is adsorbed.

The invention discloses an absorbable orthopedic instrument material capable of prompting growth of bone tissues and a preparation method thereof. The material is prepared by compounding a medical absorbable high-molecular polymer, a degradable pure magnesium or magnesium alloy which is loaded with BaTiO3 piezoelectric ceramics, can conduct piezoelectric signals and serves as a conductive carrier material, and grapheme for improving the electric polarization effect. When the absorbable orthopedic instrument material is in use, an electric signal produced by the piezoelectric ceramics under the action of an external load can be effectively conducted to organism tissues around an orthopedic instrument by the conductive carrier material to stimulate the growth of early hard tissues at a bone injury position and promote healing of the bone tissues. The BaTiO3 piezoelectric ceramics is loaded on the conductive carrier material through a dual loading technology consisting of electrophoresis-micro-arc oxidation and sol sealing, coating and film forming. Meanwhile, the conductive carrier material and the grapheme can also enhance the polarization effect and stress sensitivity of the piezoelectric ceramics. A bar material or a plate material is prepared firstly by means of a thermal die pressing, extruding or pulling method, and the orthopedic instrument is made by means of polarization and machining.

The invention discloses photo-biodegradable polypropylene fiber in the field of textiles. The photo-biodegradable polypropylene fiber comprises a fiber body, anti-aging agent powder uniformly distributed in the fiber body and photo-biodegradation agent microcapsules uniformly coated on the surface of the fiber body; the photo-biodegradable polypropylene fiber has excellent anti-aging performance when in use; and after being discarded, the photo-biodegradable polypropylene fiber can be degraded under the effect of sunlight and microorganisms in soil. The invention also discloses a preparation method of the photo-biodegradable polypropylene fiber. The method comprises an anti-aging agent preparation step for preparing anti-aging agent powder, a photo-biodegradation agent preparation step for preparing photo-biodegradation agent powder, a photo-biodegradation agent microcapsule preparation step for preparing photo-biodegradation agent microcapsules and a spinning step in which the anti-aging agent and the fiber-level polypropylene slices are subjected to melt blending in a screw extruder, the polypropylene fiber is extruded, and the photo-biodegradation agent microcapsules are uniformly coated on the surface of the polypropylene fiber to obtain the photo-biodegradable polypropylene fiber.

A process for preparing a composite bacillus liquid by fermentation is disclosed. It is characterized by that said product contains corn milk (3-5 wt.%), corn starch (1-3 wt.%), peptone (1-3 wt.%), yeast cream (0.5-2 wt.%), trace nutrients (3-8 wt.%) and water (80-90 wt.%). Its advantages are simple processing process, high purity of bacterial strain, and high effect on degradating organic pollutants in culturing fish.

The invention discloses an absorbable orthopedic instrument material capable of prompting growth of bone tissues and a preparation method thereof. The material is prepared by compounding a medical absorbable high-molecular polymer, a degradable pure magnesium or magnesium alloy which is loaded with BaTiO3 piezoelectric ceramics, can conduct piezoelectric signals and serves as a conductive carrier material, and grapheme for improving the electric polarization effect. When the absorbable orthopedic instrument material is in use, an electric signal produced by the piezoelectric ceramics under the action of an external load can be effectively conducted to organism tissues around an orthopedic instrument by the conductive carrier material to stimulate the growth of early hard tissues at a bone injury position and promote healing of the bone tissues. The BaTiO3 piezoelectric ceramics is loaded on the conductive carrier material through a dual loading technology consisting of electrophoresis-micro-arc oxidation and sol sealing, coating and film forming. Meanwhile, the conductive carrier material and the grapheme can also enhance the polarization effect and stress sensitivity of the piezoelectric ceramics. A bar material or a plate material is prepared firstly by means of a thermal die pressing, extruding or pulling method, and the orthopedic instrument is made by means of polarization and machining.

The invention discloses a self-cleaning light impermeable high toughness cement-based composite material and belongs to the technical field of application of concrete. The composite material comprises raw materials and additives. The raw materials comprise cement, coal ash, water, refined sand and a water reducer; the additives comprise nano titanium dioxide, short fibers and EPS granules; the raw materials are the basic composition of the composite material and the additives are the functional composition of the composite material. The additives uniformly fill the raw materials. The density of the self-cleaning light impermeable high toughness cement-based composite material is just 70% of that of common concrete, so that the problem that the common concrete is overlarge in self-weight is solved; as the fibers are added, the resistance to tension of light concrete can be effectively improved, so that the stress property of the light concrete is improved. By adding the nano titanium dioxide, organic pollutants attached to the surface of the concrete are immediately degraded under the action of ultraviolet rays, and the degradation products can be scoured by rainwater, so that the surface of the concrete is kept clean.

The invention discloses a redox innocent treatment system and method for waste pollutants. A pollutant inlet pipe, a degradation chemical agent adding pipe, a first ozone water adding pipe and a firstprecipitation blow-off pipe are arranged on a reduction reaction chamber in a communicating mode, a first ultrasonic generator is in signal connection with a low-power switch, a medium-power switch and a high-power switch in the first ozone water adding pipe, a second ultrasonic generator in signal connection with a low-power switch, a medium-power switch and a high-power switch in the second ozone water adding pipe, three stirring blades and a balance weight blade are fixedly arranged on a rotating rod, and a cleaning brush is fixedly arranged on an extension plate and used for brushing a filter screen cover. According to the redox innocent treatment system and method for the waste pollutants, the power of the ultrasonic generators can be automatically adjusted according to the flow of ozone water, the stirring blades and the balance weight blade are arranged in the system, liquid mixing can be promoted, the inlet end of a communicating pipe can be prevented from being blocked as well, and the system and method are quite worthy of popularization.

The invention relates to a water treatment agent, in particular to a water treatment agent for a pond. The water treatment agent comprises the following raw materials in parts by weight: 2-3 parts ofrice bran, 2-3 parts of polygonum hydropiper powder, 3-4 parts of wheat bran, 1-2 parts of a brevibacillus laterosporus concentrate, 3-4 parts of melica scabrosa powder, 2-3 parts of amino acid, 5-6 parts of zeolite powder, 2-3 parts of photosynthetic bacteria, 3-5 parts of brown sugar powder and 150-250 parts of drinking water. The preparation method comprises the following steps: sequentially adding the raw materials into drinking water, carrying out mixing, and then carrying out standing for 2-4 hours to obtain the water treatment agent. After the rice bran, the wheat bran and the brown sugar powder are fermented with water, lactic acid viable bacteria are generated, generated metabolites and amino acid small peptides play a role in slowly releasing a carbon source and organic acid, andsimultaneously the pH value of a water body can be reduced; in addition, a carbon source can be supplemented, the bacterial phase of the water body can be stabilized, and nutrition is provided for probiotics; rich nutrient elements are provided for algae, and the algae phase is stabilized; and propagation of miscellaneous bacteria can be effectively inhibited by polygonum hydropipiper.

The invention discloses a preparation method of a loss and degradation-controllable novel environment-friendly xylophyta plant type regulating agent. The regulating agent can be used for regulating the properties of the plant, such as the plant height, the crown diameter, the branching number and the like. After the plant is treated by the regulating agent, the height of the newly-increased plant can be reduced by 2-4 times, the diameter of the newly-increased crown can be reduced by 2-4 times, the newly-increased branches can be increased by 3 times, the height of the plant can be obviously reduced, the plant is compact in type, and the plant can be thickly grown conveniently. The regulating agent disclosed by the invention is added with auxiliaries capable of effectively controlling the loss of effective constituents, the regulating agent is high in use efficiency, and good in function effect, the spraying times and the use level can be reduced, the labor cost and the regulating agent cost can be reduced, and the economic benefit can be obviously improved. The regulating agent disclosed by the invention further has the function for controlling the degradation of the regulating agent, and the redundant regulating agent which can not absorbed by the plant can be catalytically degraded after the effective regulating period stops, so that the environments damage to the environment caused by the redundant regulating agent can be reduced. The preparation method has the economic benefit and the environmental protection benefit, thereby being wide in application prospect.

The invention discloses a biodegradable plastic. The biodegradable plastic is characterized in that lignocelluloses and zeolite powder are scattered in polyethylene resin, and cellulose degradation enzymes are arranged in pores of the polyethylene resin. The biodegradable plastic is prepared by steps: adding biodegradable enzymes into ethanol and stirring; mixing the zeolite powder with ethanol solution at the step one, and removing the ethanol; mixing the lignocelluloses, the polyethylene resin and the zeolite powder; and using a granulator for granulating. Compared with starch type biodegradable plastics, the biodegradable plastic has the advantages of high strength and easiness in degradation.

The invention discloses a method for denitrification of FCC catalyst wastewater, which comprises the following contents: adding nitrifying bacteria and nitrous acid denitrification bacterial agent to the sewage, the treatment temperature of ammonia nitrogen-containing sewage is 18-40°C, and the dissolved oxygen is 0.2~ 3mg / L, pH 7.5-8.5. The method of the present invention adopts autotrophic bacteria and heterotrophic bacteria to carry out the advantageous combination as the enhanced microorganisms for wastewater treatment, and adopts different feeding methods to realize the removal of ammonia nitrogen, total nitrogen and CODcr in the same reactor, and the wastewater treatment effect is good, compared with The combination of high-efficiency devices can truly realize short-range nitrification and denitrification or synchronous nitrification and denitrification of ammonia-containing wastewater with catalysts, and realize the discharge of ammonia nitrogen and other pollutants in wastewater up to standard.

The invention relates to the technical field of medicines, in particular to a CHMP2B protein targeted inhibitor and application thereof in preparation of medicines for preventing or treating ischemic heart disease. The invention provides an important theoretical basis for the CHMP2B protein targeted inhibitor to treat ischemic heart disease, and provides a new drug solution for the prevention and treatment of ischemic heart disease in the prior art. Meanwhile, a new pharmaceutical application is explored for the known medicine metformin or the medicinal salt thereof, and the treatment range of the medicine is widened.

The invention discloses a high-elasticity starch cavity hemostatic material and a use and preparation method thereof, the product is flexible and elastic, and the shape and the size of the product are designed according to different use parts. The preparation method comprises the following steps: dissolving starch and derivatives thereof and / or other macromolecular substances; then pouring into a corresponding container, and freezing and freeze-drying the product by using a gradient cooling method; carrying out high-temperature acid crosslinking on the freeze-dried product in an acid steam reactor; and packaging and sterilizing the product to obtain the final product. The high-elasticity starch cavity hemostatic material is stable in structure, smooth and fine in sample surface, high in liquid absorption capacity, relatively simple and convenient in manufacturing process, high in repeatability and high in product safety, and can be widely applied to the field of medical instruments. The product is degraded after being placed in the cavity 2-4 and flows out of the cavity, and secondary trauma of a patient caused by taking out the product after an operation is avoided.

The invention relates to an elastic degradable tracheal stent and a construction method thereof. The stent is a three-layer elastic tracheal composite structure, which sequentially includes a PGS tube core, a C-shaped PCL ring and a PCL sheath arranged in parallel from the inside to the outside; The PGS tube core is a tubular structure made of polyglycerol sebacate; the C-type PCL ring is a C-shaped structure made of polycaprolactone; the PCL sheath is polycaprolactone prepared by electrospinning. Lactone sheath. The invention obtains a tracheal stent material with good elasticity, good pore connectivity, good support, and timely degradability by constructing a three-layer elastic trachea-shaped composite stent material of PGS tube core-C-type PCL ring-PCL sheath, which is superior to Compared with other tissue engineering materials in the past, this scaffold material can achieve rapid vascularization, good tissue infiltration and good flexibility, etc., which will pave the way for subsequent clinical research.

The invention provides a feed additive for improving the shelling rate in crab breeding and a processing technology of the feed additive. Comprising calcium lactate, bile acid and trace elements. According to the feed additive capable of increasing the shelling rate in crab breeding and the processing technology of the feed additive, the calcium lactate, the bile acid, the trace elements, the quick lime, the bacillus, the biological fertilizer, the organic acid, the trichosanthes kirilowii maxim roots and the like are used as main raw materials, so that crabs can be promoted to recover physique, and shelling hormones required by the crabs are synthesized; the beneficial bacteria can inhibit reproduction and growth of harmful bacteria, reduce diseases, timely degrade and convert organic matters in the pond and promote growth of excellent algae, so that the effect of inhibiting growth of moss can be achieved, and the situation that moss covers the bottom of the crab pond, feed feeding cannot reach the bottom of the pond, and crab ingestion is affected is avoided; meanwhile, the quick lime can improve water quality, increase dissolved oxygen, adjust the pH value of the water body and increase the calcium ion concentration of the water body, and growth of the crabs after shelling is facilitated.

The invention relates to a bacillus combination preparation liquid fermentation production method. The bacillus combination preparation is composed of the following components (by weight percent): 3-5% of corn steep liquor, 1-3% of corn starch, 1-3% of peptone, 0.5-2% of yeast extract, 3-8% of micronutrient component and 80-90% of water. The invention has the following advantages: production technology is simple and convenient, feasibility is strong, product bacterial strain is pure, no organic matter is contained, organic pollution can be obviously degraded and eutrophication degree can be reduced when being used in fisheries production, and fungicide can timely degrade and convert metabolite produced in cultivation process, eliminate harmful substance, balance algae phase and bacteria phase and optimize cultivation ecological environment when being used in fishery environment.

The invention discloses a nanometer spherical porous weak light photocatalyst for degrading formaldehyde, and a preparation method and an application thereof. The photocatalyst comprises 0.2-30wt% of a titanium source, 60-99wt% of an alcohol solvent, 0.005-0.01wt% of a hydrolysis inhibitor, 0.005-0.01wt% of metal ion-containing deionized water, 10-40wt% of hydroxy group-containing mediate strong acid, and 1-5wt% of inorganic dispersant-containing deionized water, and the hydroxy group-containing mediate strong acid contains SiO2 crystal seeds; and the photocatalyst is a transparent sol liquid of nanoparticles, the particle size of the transparent sol liquid is 10-30nm, the surface of the photocatalyst is spherical porous distribution, and the specific surface area of the photocatalyst is large, and is above 300m<2> / g averagely. The photocatalyst has the advantages of mild production preparation conditions, small production safety risk, easy realization of batch production, weak light catalytic purification and high stability, and solves the problems of strict preparation conditions, low sunshine utilization rate, low air purifying and degrading efficiency, large base material apparent influence, construction inconvenience and the like of present mature photocatalyst products.

The invention discloses photo-biodegradable polypropylene fiber in the field of textiles. The photo-biodegradable polypropylene fiber comprises a fiber body, anti-aging agent powder uniformly distributed in the fiber body and photo-biodegradation agent microcapsules uniformly coated on the surface of the fiber body; the photo-biodegradable polypropylene fiber has excellent anti-aging performance when in use; and after being discarded, the photo-biodegradable polypropylene fiber can be degraded under the effect of sunlight and microorganisms in soil. The invention also discloses a preparation method of the photo-biodegradable polypropylene fiber. The method comprises an anti-aging agent preparation step for preparing anti-aging agent powder, a photo-biodegradation agent preparation step for preparing photo-biodegradation agent powder, a photo-biodegradation agent microcapsule preparation step for preparing photo-biodegradation agent microcapsules and a spinning step in which the anti-aging agent and the fiber-level polypropylene slices are subjected to melt blending in a screw extruder, the polypropylene fiber is extruded, and the photo-biodegradation agent microcapsules are uniformly coated on the surface of the polypropylene fiber to obtain the photo-biodegradable polypropylene fiber.

The invention discloses a denitrification method by sewage short-cut simultaneous nitrification and denitrification, comprising the following step of: adding a nitrous acid denitrifying inoculant into sewage containing ammonia and nitrogen, wherein the ammonia-nitrogen-containing sewage treatment temperature is 18-40 DEG C, dissolved oxygen is 0.1-3mg / L, and pH is 7-9. According to the method, the heterotrophic nitrobacteria are used for advantage combination as the enhanced microorganism to process wastewater, thus realizing the removal of ammonia nitrogen, total nitrogen and CODcr in a samereactor. The effect of wastewater treatment is good. The method provided by the invention is especially suitable for the purification treatment of wastewater containing ammonia nitrogen, and can be used to actually realize denitrification by short-cut nitrification and denitrification or simultaneous nitrification and denitrification.