34results about How to "Timely degradation" patented technology

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 discloses a nanometer spherical porous weak light photocatalyst for degrading nitrogen oxide, and a preparation method and an application thereof. The photocatalyst comprises 0.2-35wt% of a titanium source, 64-99wt% of an alcohol solvent, 0.005-0.01wt% of a hydrolysis inhibitor, 0.005-0.01wt% of metal ion-containing deionized water, 5-50wt% 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 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 relates to an absorbable orthopedic instrument material with a piezoelectric effect and a preparation method thereof. The orthopedic instrument is formed by compounding a medical absorbable high polymer, biological piezoelectric ceramic particles dispersed and distributed in the polymer, and a degradable conductive material which transmits a piezoelectric signal. In the using process, the piezoelectric signal generated by the biological piezoelectric ceramic particles dispersed and distributed in the polymer can be effectively transmitted to the body tissues around the orthopedic instrument by the conductive material, namely a pure magnesium or magnesium alloy wire or plate, near the biological piezoelectric ceramics in the polymer under the action of an external load, the formed electrical stimulation signal can accelerate fracture healing, and the absorbable orthopedic instrument material can be in different structural forms such as bone nails and bone lamellas and is wide in application prospects.

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 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 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; andthe obtained woven urethra scaffold has the apparent morphology of a bionical urethra, and is thoroughly degraded.

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 rapid degradation and in-situ treatment process for kitchen waste, which comprises the following steps: sorting and separating domestic waste and leachate in the kitchen waste, and crushing the separated domestic waste into diameters of 10-30mm granules; stir the granules, and squeeze and dehydrate the granules after mixing, so that the water content is between 40% and 60%; produce a variety of enzymes through microbial degradation bacteria to dehydrate the granules after extrusion The kitchen waste is biodegraded to produce organic fertilizer for recycling; the leachate separated by sorting, the dilution water produced by crushing, and the liquid produced by extrusion dehydration are mixed into a mixed liquid, and the mixed liquid is electrolyzed, air flotation, Hydrolytic acidification and biochemical process treatment to separate the mixed liquid from oil and water, so that the waste water produced by oil-water separation can be discharged up to the standard, and the oil produced by oil-water separation can be recovered and reused. The invention can make full use of the residual value of the kitchen waste, save the transportation cost, and at the same time rapidly degrade the kitchen waste in a timely manner.

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.