33results about How to "Improve degradability" patented technology

The present invention relates to biodegradable plastic composition comprising rice powder and / or corn powder, which can be characterized in comprising 100 parts by weight of polyolefin matrix resin; 5 to 400 parts by weight of grain powder selected from the group consisting of rice powder, corn powder and mixture thereof. The biodegradable plastic composition according to the present invention can be manufactured in various forms such as injection molding product, sheet molding and blow molding product, which have excellent physical properties and product stability. The efficiency of waste disposable of the product manufactured with the composition can be remarkably improved since the rive powder or the corn powder contained in the composition can be degraded by microbes in the nature after a certain period. Therefore, the problems of soil, air, and sea pollution caused by burial or incineration of the wastes of conventional plastic molding product can be minimized.

The invention discloses an EVA material for a sneaker sole, which is made by adopting the following components according to part by weight: 10 to 90 portions of ethylene-vinylacetate copolymer, 10 to 90 portions of modified starch copolymer, 5 to 20 portions of ethylene-alpha-olefin copolymer, 0 to 20 portions of filler, 1.0 to 3.0 portions of zinc oxide, 0.5 to 2.0 portions of zinc stearate, 0.5 to 2.0 portions of stearic acid, 0.4 to 1.2 portions of dicumyl peroxide, and 1.0 to 5.0 portions of azobisformamide. The invention adopts EVA expanded material blended and modified by starch / ethylene-vinylacetate copolymer / ethylene-alpha-olefin copolymer, and starch is applied to chemical plastic, thus reducing the usage of chemical raw materials; simultaneously, the starch derivative has the characteristic of natural degradation, and is finally decomposed into carbon dioxide and water, thus causing no pollution to the environment, improving the easy degradation performance of the EVA expanded material, and advocating the industry times of 'low-carbon emission reduction, green environmental protection' of sneakers.

The invention discloses a method and a device for efficient biochemical treatment of refractory wastewater, and is used for solving problems that existing refractory wastewater treatment difficulty is great, effect is poor, and treated wastewater does not reach emission standards. The device comprises a regulating reservoir, a gas-floating tank, a pre-degrading tank, an intermediate water tank, a biological reactor, an advanced oxidizing tank and an MBR (Membrane Bioreactor) tank, wherein the regulating reservoir is used for regulating inlet water; the gas-floating tank is used for removing organic suspended substances in the wastewater; the pre-degrading tank is used for degrading part of biological refractory organic substances; the intermediate water tank is used for regulating inlet water of the biological reactor; the biological reactor is used for primary biological degradation; the advanced oxidizing tank is used for oxidizing un-degraded substances; the MBR tank is used for re-biological degradation; a membrane assembly is arranged in the MBR tank; the regulating reservoir, the gas-floating tank, the pre-degrading tank, the intermediate water tank, the biological reactor, the advanced oxidizing tank and the MBR tank are connected in sequence. The device and the method disclosed by the invention are adopted to lower degradation difficulty of refractory wastewater, and are high in degradation efficiency; refractory pollutants in the degraded wastewater are greatly reduced, the degraded wastewater is low in turbidity, and emission standards can be achieved.

The invention relates to an engineering bacterium capable of degrading organophosphorus pesticides and a construction method and application thereof. The engineering bacterium contains an opd gene coding wide-spectrum organophosphorus pesticide hydrolase (OPH) and can express OPH. The bacterium is the strain Bacillus subtilis sp. LTG1 which is preserved in China General Microbiological Culture Collection Center (CGMCC), with an accession number of GCMCC No. 9272. The engineering bacterium can simultaneously degrade organophosphorus pesticides like DDVP, malathion, rogor, omethoate, parathion, methyl parathion and acephate and is used for biodegradation and biological purification of organophosphorus pesticide pollution in a water source and soil.

The object of the present invention is to provide a biodegradable bio-absorbable material for clinical practice having excellent degradation profiles, heat resistance and a mechanical property. The present invention provides a biodegradable bio-absorbable material for clinical practice, which comprises the following A-type polymer and B-type polymer: wherein X1 and X2 are in the range of 0 to 50 mole %, Y1 and Y2 are in the range of 0 to 50 mole %, Z1 and Z2 are in the range of 50 to 100 mole %, m1 and m2 are in the range of 3 to 8, R1 and R3 are the hydrogen or C1-4 alkyl group, R1′ and R3′ are the C1-2 alkyl group, and R2, R2′, R4 and R4′ are the C1-4 alkyl group provided that Y1 is 0 mole % when X1 is 0 mole %, Y2 is 0 mole % when X2 is 0 mole %, and X1 and X2 are not 0 mole % at the same time.

The invention discloses a preparation method of degradable modified vinyl plastic and belongs to the field of plastic. The preparation method comprises the steps that under the high pressure condition, modified polyethylene is prepared through modified starch and wood fibers, then the modified polyethylene is added to a mixture of dialdehyde starch, polyvinyl alcohol, chitosan and sodium carboxymethylcellulose, and the degradable modified vinyl plastic is prepared and obtained under the high temperature condition. According to the preparation method of the degradable modified vinyl plastic, the synergistic effect of the modified starch and the wood fibers under the high pressure condition is utilized, and degradability of modified polyethylene is improved; the synergistic effect of polyvinyl alcohol, chitosan and modified polyvinyl is utilized, degradability and water resistance of the vinyl plastic are improved.

The invention provides a double-long chain ester-based quaternary ammonium salt. Through introduction of an ester group in a molecular structure of the double-long chain ester-based quaternary ammonium salt, degradability and environmentally friendly characteristics are obtained. The invention also provides a synthesis technology of the double-long chain ester-based quaternary ammonium salt. The synthesis technology comprises the following steps that N,N-dimethyl ethanolamine and a long-chain alkylogen are mixed; the mixture is added with an appropriate amount of solvents to undergo a reaction under a certain reaction conditions to produce a reaction intermediate of long-chain alkyl ammonium halide; long-chain alkyl ammonium halide and long-chain alkyl acyl chloride are mixed; the mixture is added with an appropriate amount of solvents to undergo a reaction under a certain reaction conditions; after the reaction is finished, the solvents are moved by distillation; and final solid products are obtained through multiple recrystallization processes. The synthesis technology adopts an unconventional quaternary ammonium salt synthesis route comprising carrying out quaternary amination and then carrying out esterification, and thus having the advantages that a raw material conversion rate is high; intermediate products are easy for separation and purification; reaction conditions are mild; a final product color is light; active matter content is high; solvents can be recycled; waste gas, waste water and industrial residues are not produced; and the use of traditional toxic alkylating reagents such as dimethyl sulphate, halomethanes and the like is avoided in synthesis processes.

The invention belongs to acoustic packaging materials in the field of sound absorption material design, particular relates to a polyurethane composite acoustic material and a preparation method thereof. The material is prepared from the following components: 60 parts of polyether polyol 330N, 40 parts of polyether polyol 3630, 30 parts of 4,4 diphenylmethane diisocyanate, 3 parts of foaming agent deionized water, 3 parts of foaming agent triethanolamine, 5 parts of foaming agent dichlorofluoroethane, namely HCFC-141b, 0.05 part of catalyst A1, 1 part of catalyst A33, 1.8 parts of foam stabilizer and 0.2 to 1.5 parts of pine needle fragments with 1mm to 2mm or 3mm to 4mm or 5mm to 6mm. According to the polyurethane composite acoustic material and the preparation method thereof, a low-frequency sound absorption characteristic of polyurethane is improved by adding the pine needle fragments, the degradation capability of the polyurethane is increased through the addition of the pine needle fragments, and environmental pollution is reduced, thereby a problem that sound-absorbing materials at the prior art have poor sound absorption performance at the low frequency is solved.

The invention discloses a method for preparing chemical crosslinking and metal ion complexing type interpenetrating network hydrogel. The hydrogel is a multiphase continuous hydrogel formed through interpenetrating and entanglement of two networks. According to the method, the positions and number of polymer chain connection points are controlled through amido-epoxy polymerization reaction, and a first polymerized network structure is prepared by means of click chemical reaction. Dopamine is high in cytocompatibility, biocompatibility and other properties. A polymer is prepared through dopamine-epoxy polymerization reaction, and the interpenetrating network hydrogel with various excellent properties is prepared through combination of ion complex reaction of the phenolic hydroxyl group in dopamine and the first polymerized network structure. The method is easy, and the obtained interpenetrating network hydrogel has the advantages of being high in elasticity, intensity and conductivity and wide in application range.

The invention discloses a meloidogyne jauanica effect gene Mj-ttl, encoded protein and application of the meloidogyne jauanica effect gene Mj-ttl, and belongs to the technical field of biology gene engineering. The sequence of the effect gene Mj-ttl is shown in SEQ ID NO:1-2. The amino acid sequence of the encoded protein MJ-TTL of the meloidogyne jauanica effect gene Mj-ttl is shown in SEQ ID NO:3. The expression of Mj-ttl gene specificity in meloidogyne sub-abdomen esophageal glands is determined. The effect protein of meloidogyne jauanica is achieved and interacts with FTRc in the plants, so that the degradation capacity of plants on ROS is enhanced. Accumulation of the ROS in plant cells in the initial stage of meloidogyne infection is restrained. Then the occurrence of plant PTI reactions is restrained. Therefore, the plants can have the higher susceptibility to the meloidogyne jauanica. New targets are provided for culturing plants of varieties resistant to the meloidogyne jauanica. The good theoretical and guide significance in culturing crops resistant to the meloidogyne jauanica in practice is achieved.

This invention relates to a biological carrier for water treatment, more specifically, a suspended microbe carrier and its preparation method. The method adopts a polymer extruder, whose spray nozzle is equipped with a mold with a groove at the section and rough inner surface. The mold can extrude filamentous polymer with convex section and rough surface. The diameters of the filaments are 1-3 mm. winding of several filaments of the filamentous polymer can form suspended microbe carrier with arbitrary structure. The helical diameters of the helically winding filamentous polymer are 6-8 mm, and the pitches are 4-7 mm. The suspended microbe carrier can match the sizes and physical structures of microbes in wastewater, and has such advantages as simple structure, easy preparation, and excellent hydrodynamic properties.

The invention discloses a conservation dish for increasing the survival rate of desert plants. A fitting groove internally provided with an aerogel felt is formed in the circumference of the inner wall of a dish body; the dish body is filled with nutrient soil formed by mixing an active microorganism fermentation liquor, a micronutrients fertilizer, a rooting liquid, water-absorbent resin, humic acid, an organic fertilizer and sandy soil; after the desert plants are cultivated into young plants in the conservation dish, the young plants and the dish body are transferred into soil pits of a desert region for cultivation. The dish body made from pulp provides more organic matters after being degraded, the hollow dish body, the protruding fitting groove and the aerogel felt provide multiple thermal insulating layers for the transplanted plants to prevent moisture from evaporating, the combination of the nutrient soil provides nutrient and moisture required by periodical protection and periodical growth for seedlings under the desert conditions, thereby ensuring that the desert plants can develop in the seedling stage and in the growth state, promoting the growth of the seedlings, andincreasing the seedling raising survival rate and transplanting preserving rate of the desert plants, and a seedling raising and transplanting method is superior to a desert restoration technology under an existing drip irrigation condition and less irrigation condition.

The bio-filtration treatment method of waste gas containing hydrophilic and hydrophobic mixed volatile organic substances includes waste gas, bio-filtration bed with packing material, residence time and discharge. Said bio-filtration bed adopts two-stage or three-stage structure with dewatering unit, its residence time is 1-1.5 min, and its packing material is a mixture formed from compost, soil and volcanic ash, and is made up by mixing the above-mentioned compost-soil-volcanic ash mixture and activated sludge or supernatant fluid according to the volume ratio of 20:1-40:1.

A preparation method of environmentally friendly degradable agricultural film is disclosed. The method includes 1) weighing raw materials including, by weight, 50-70 parts of film-grade polyethylene,20-30 parts of chitosan modified distarch phosphate, 3-6 parts of a rare earth modification liquid, 2-5 parts of activated cellulose whiskers, 10-20 parts of polyvinyl alcohol, and 2-6 parts of a degradation aid. The film-grade polyethylene as the base material and the distarch phosphate as an auxiliary material are adopted to improve degradability of the film; the distarch phosphate is modified starch, has high stability to influences caused by acid, base and shearing force, has high freezing stability and thawing stability, and after modification with chitosan, can improve degradability of the film when applied to the film. In addition, added polybutylene succinate is subjected to strip drawing after molding.

The invention provides a degradable polyethylene plastic. The degradable polyethylene plastic is prepared from the following raw materials in parts by weight: 75-85 parts of polyethylene, 15-25 partsof polyvinyl alcohol, 15-25 parts of modified starch, 5-8 parts of dicumyl peroxide, 7-9 parts of ethylene-vinyl acetate copolymer, 9-11 parts of hydroxypropyl cellulose, 5-7 parts of a silane coupling agent, 4-6 parts of glycerol monostearate and 26-32 parts of ethylene glycol, wherein the modified starch comprises the following raw materials in parts by weight: 90-100 parts of starch, 2-4 partsof carboxymethyl starch, 1-2 parts of urea, 1.5-3 parts of polycaprolactone, 1.2-2 parts of dioctyl phthalate and 1.5-3 parts of a castor oil-ethylene oxide condensation compound. According to the degradable polyethylene plastic disclosed by the invention, the degradability of the polyethylene plastic is improved, so that the obtained polyethylene plastic can be well degraded, and the environment-friendly performance is good. The invention further provides a preparation method of the degradable polyethylene plastic.

The invention discloses a development method of a flame-retardant antistatic wear-resistant and easily degradable bubble film. The bubble film comprises the following raw materials: LDPE, LLDPE, HDPE,calcium carbonate B202, 5000S, a modified natural fiber (corn starch), antistatic powder, and isopropyl trititanate; the development method comprises the following steps: adding the natural fiber (corn starch) to water with a pH value of 3, heating, drying, and grinding into power; mixing the light calcium carbonate B202 with the isopropyl trititanate, stirring, then mixing with natural fiber powder, and performing granulation after mixing; blending the HDPE with natural fiber powder particles to obtain natural fiber coated particles; mixing the 5000S, the LDPE, the LLDPE, and the antistaticpowder with the natural fiber coated particles, and finally preparing the bubble film. The bubble film, developed by the development method, is strong in flame-retardant capability, environmentally-friendly, high in recovery rate, strong in toughness, long in storage time and excellent in application effect, and the bubble film material is easily degradable.

The invention relates to a nano-hydroxyapatite ceramic and a preparation method thereof and belongs to the technical field of ceramic processing. The nano-hydroxyapatite ceramic is prepared from the following components in parts by weight: 20-50 parts of hydroxyapatite, 40-60 parts of Al2O3, 10-20 parts of CaO, 1-10 parts of ZrO2, 1-10 parts of Y2O3 and 1-10 parts of CaF2. The preparation method of the nano-hydroxyapatite ceramic comprises the following steps of: matching the components according to a proportion, adding an alcohol solution, mixing uniformly, kneading, evaporating a solvent in a water bath at the temperature of 80 DEG C, heating to expand in a drying oven at the temperature of 70-90 DEG C, molding, putting the molded blank into a muffle furnace, increasing the temperature of the muffle furnace to 1,000-1,200 DEG C slowly, treating the blank for 8-10 hours, cooling, and taking out of the muffle furnace to obtain a finished product of the nano-hydroxyapatite ceramic. The nano-hydroxyapatite ceramic provided by the invention is a three-dimensional nano-porous expanded product, has the porosity of 90% or higher and is suitable for scaffold materials and bone repair materials in the bone tissue engineering.

The invention provides a biochemical treatment method of refinery wastewater. A UASB (upflow anaerobic sludge blanket) anaerobic reactor and an SBR (sequencing batch reactor) aerobic reactor which areconnected in series are arranged, and cultured and acclimated anaerobic granular sludge and aerobic granular sludge are arranged in the UASB anaerobic reactor and the SBR aerobic reactor respectively. The treatment method comprises following processes: a UASB and an SBR operate, to-be-treated refinery wastewater is introduced into the UASB and subjected to anaerobic treatment, and after the wastewater subjected to the anaerobic treatment is discharged, the wastewater is introduced into the SBR and subjected to aerobic treatment, wherein oil content of the to-be-treated refinery wastewater isnot higher than 300 mg / L, COD of the wastewater entering the SBR is 200-600 mg / L, and pH is 6.5-7.5. With the adoption of the treatment method, sludge loss can be avoided, the area occupied by the reactor is saved, the infrastructure investment cost is reduced, and the index of the treated wastewater can meet the related industry standard.

The invention discloses a catalyst for treating refractory wastewater. The catalyst comprises a first component composed of nano scale zero-valent iron, powdered activated carbon and graphene and a second component namely copper nitrate. The invention also discloses a preparation method of the catalyst for treating refractory wastewater. The preparation method comprises the following steps: preparing nano scale zero-valent iron; mixing the raw materials according to the mass ratio; and adding copper nitrate into the first component according to the mass ratio, and adding catalytic hydrogen peroxide and catalytic persulfate to prepare the catalyst. The invention also discloses a preparation device of the catalyst for treating refractory wastewater. The preparation device comprises a mixing structure, a synthesis structure and a discharge structure, the mixing structure comprises a feed inlet, a dispersion valve and a mixing cavity, and the dispersion valve comprises a valve blade with a plurality of through holes, a rotating shaft and an inclined pipe. Therefractory wastewater is treated through a catalyst, the preparation method of the catalyst is improved, and solid fine particles of the raw materials are reasonably matched, so that the mixing uniformity is effectively improved, and the performance of the catalyst is improved.

The invention discloses a method and a device for degrading high-concentration and high-salinity organic wastewater through catalytic wet electrooxidation. The method comprises the steps of degrading the organic wastewater by combining a (catalytic) wet oxidation technology with an electro-catalysis technology to obtain a purified liquid. According to the method, after the electric field is introduced, active species generated by the anode can accelerate the induction process of the reaction, and hydrogen peroxide generated by the specific cathode can also improve the degradation capacity of the system. The method forms a remarkable synergistic effect with a traditional (catalytic) wet oxidation technology, and has a good application prospect in treatment of high-concentration and high-salinity organic wastewater.

The invention relates to the field of degradable polyester, and discloses long-chain branched degradable polyester and a preparation method thereof. The polyester is formed by polycondensing the following monomers: (a) aromatic dibasic acid and a derivative thereof; (b) straight-chain aliphatic dibasic acid with less than 10 carbon atoms and a derivative thereof; (c) straight-chain aliphatic dihydric alcohol with less than 6 carbon atoms; and (d) polybasic organic acid and a derivative thereof. According to the invention, with the introduction of the polybasic organic acids and the derivatives thereof, a long-chain branched chain molecular structure is constructed, such that the degradability of the polyester is improved while the melt strength and the heat resistance can be ensured.

The invention discloses a preparation method of a graphene PLA wood-plastic composite. The preparation method comprises the steps that gum wood is cut and crushed, crushed gum wood powder is filteredthrough a sieve of 60-100 meshes to remove larger impurities in the gum wood powder, pure gum wood fine powder is obtained, the obtained gum wood fine powder is placed in an air-blowing drying box forair-blowing drying until the mass is constant and an absolute dry state is reached, the absolute dry wood powder is added into a solution of mixing acetone, a silane coupling agent and the like, heating and infiltration are conducted, after a reaction is completed, drying is conducted until the wood powder is in the absolute dry state, the infiltrated and dried wood powder and graphene powder aremixed and stirred at the high speed, the evenly-mixed powder is subjected to heating forming, and thus the wood-plastic composite is obtained. The preparation method of the graphene PLA wood-plasticcomposite has the advantages that operation is easy and safe, reaction is easy, the efficiency is high, energy consumption is low, environmental protection and low pollution are achieved, and performance is improved obviously, and further has the advantages that the application range is wide, the amount of an adopted agent is less, the reaction speed is high, reaction products are non-toxic, and stimulation to a human body is avoided.

The invention belongs to the technical field of food processing, and particularly relates to a preparation method of a walnut protein peptide-selenium chelate for regulating intestinal flora. The method comprises the following steps: (1) degreasing walnut kernels, and carrying out primary fermentation by using grease degrading bacteria to obtain a first fermentation material; (2) adding sucrose, serratia aromatica and zymomonas mobilis into the first fermentation material according to a certain ratio, and carrying out secondary fermentation to obtain a second fermentation material containing prebiotics; (3) carrying out enzymolysis on the second fermentation material by using a compound enzyme to obtain protein peptide; (4) adding selenium-enriched yeast into the obtained protein peptide to carry out selenium chelating treatment; and (5) carrying out pre-freezing, vacuum freeze-drying, packaging and sterilization on a selenium chelating material obtained in the step (4). In the invention, a selenium element can be provided for a human body, and a grease content is further reduced in a preparation process so that an extraction rate and purity of protein and a conversion rate of protein polypeptide are correspondingly improved, and an effect of regulating intestinal flora is also achieved.

The invention discloses a preparation method of an easily-degradable packing material. The method comprises the following steps: 1) performing mixing and ball milling on 50-70 parts by weight of calcium carbonate and 20-60 parts by weight of montmorillonite until the average particle size is 200-800nm, thus obtaining filler mixing powder; 2) mixing 20-28 parts by weight of filler mixing powder prepared in step 1), 8-12 parts by weight of lignocellulose, and 3-8 parts by weight of iron stearate to obtain modified mixing powder. The packing material prepared by the method has the advantages of being low in environmental pollution, easy to degrade, and short in degrading time.

The invention is applicable to the field of packaging materials, and particularly relates to a degradable flame-retardant packaging material which comprises the following raw materials in parts by weight: 50-80 parts of a resin composite material; wherein the resin composite material comprises the following components: resin, glass fibers, starch, cellulose and a plasticizer. The method for preparing the resin composite material comprises the following steps of: adding the resin, the starch, the cellulose and the plasticizer, uniformly stirring the mixture, adding the glass fibers, and vibrating the mixture while stirring; the material further includes: 15-20 parts of a dispersant, 25-30 parts of a flame retardant, and 70-100 parts of paper pulp. After the resin composite material and thepaper pulp are combined for use, the paper box packaging material is waterproof on the basis of degradability, and the resin and the glass fibers in the resin composite material act on the paper pulpin a matched manner, so that the paper box packaging material has certain tensile strength even if the paper box packaging material is damaged and water enters the paper pulp.

The invention provides a method for recovering aramid fiber from an aramid fiber / phenolic resin composite material waste, and belongs to the technical field of aramid fiber recovery methods. The method for recovering the aramid fiber comprises the following steps: putting an aramid fiber / phenolic resin composite material into a mixed recovery solution, and placing the mixed recovery solution in asealed reaction kettle; under the condition that the temperature ranges from 150 DEG C to 200 DEG C, reacting for 6-12 hours in an environment with the gas-phase partial pressure of 2-4 mpa; and washing a reacted product to obtain the recycled aramid fiber. According to the method, phosphoric acid and glacial acetic acid are adopted as a mixed recovery solvent, the degradation capability of the mixed recovery solvent to phenolic resin is improved, great reduction of the performances of the aramid fiber in other recovery solvents and recovery conditions can be avoided, and the aramid fiber is easy to disperse into single fiber in subsequent processing. The method has the advantages that the recovery rate of the aramid fibers is high, the performance loss degree is small, the operation process is simple, and the method is suitable for industrial production.

The invention discloses a preparation process of negative ion environment-friendly degradable vacuum blister glue. The preparation process specifically comprises the following operation steps: S1, preheating and liquefying a material; s2, material catalytic reaction; s3, a reinforcing material is placed; and S4, stirring and mixing the materials, the auxiliary device is used in the preparation process, so that the required materials can be subjected to large and small particle screening, and the relatively large materials are subjected to segmented treatment, so that the subsequent high-temperature liquefaction or mixing can be more efficient; the problem that heating is uneven during high-temperature treatment due to the fact that the material size difference is large during processing is avoided, and the effect after follow-up preparation is affected is solved, so that the performance of the vacuum plastic suction tape prepared through the preparation technology can be enhanced, and the performance of the vacuum plastic suction tape is improved by adding a reinforcing material in the preparation process. Compared with the prior art, the degradability of the vacuum plastic suction adhesive prepared by the preparation process is optimized.

The invention discloses a high-efficiency degradation method for greening waste composting. The method comprises the following steps: S1, collecting landscaping wastes such as stems and branches; s2, preparing the aired branches and stems into a material to be composted; s3, sampling and weighing the to-be-composted material, and calculating the C / N value of the ratio of the total carbon content to the total nitrogen content of the to-be-composted material; s4, putting the to-be-composted material into a composting reaction container, adjusting the C / N value, building a pile and compacting; s5, after the pile is built, gradually increasing the pile temperature under the action of microorganisms, after the temperature is increased to 65 DEG C or above, maintaining the temperature for 24 h, then turning the pile for the first time and adding lignin degrading bacteria; then re-building the pile, and repeatedly turning over the pile for multiple times to add the lignin degrading bacteria; s6, when the material is soft and fragile when held by hands and twisted, the color is dark brown, and the material has rotten soil smell,finishing the composting process. Compared with the prior art, the method has the advantages that the composting time of the landscaping waste is shortened, the release amount of hydrogen sulfide and ammonia gas is reduced, and secondary pollution is prevented.

The invention relates to an intelligent control system for a horizontal flow constructed wetland. The intelligent control system comprises a water inlet area, a filtering area, a water outlet area, awater quality monitoring unit and an aeration unit, wherein the water inlet area, the filtering area and the water outlet area are sequentially communicated in the horizontal direction; the water quality monitoring unit is used for monitoring the water quality of the water inlet area and the water outlet area, and the aeration unit is arranged in the water inlet area and is connected with the water quality monitoring unit; the water inlet area is communicated with the constructed wetland and is used for storing discharged water of the constructed wetland; the filtering area can filter water flowing into the water inlet area and discharge the water into the water outlet area; the water quality monitoring unit can start the aeration unit to aerate the water inlet area when monitoring that the water quality parameters of the water inlet area and the water outlet area are not within a preset range. The water quality of the water inlet area and the water outlet area is monitored in real time through the water quality monitoring unit, when the water quality is poor, the aeration unit is started to increase the oxygen content in the water inlet area, the purpose of oxygenation of the constructed wetland system is achieved, the degradation capacity of microorganisms in the constructed wetland system to pollutants in water is improved, and the treatment effect of the constructed wetlandis guaranteed.

The present invention relates to a method for degrading artificial bone by biologically active calcium metaphosphate whiskers. Using the bioactive properties of calcium metaphosphate whiskers to improve the bioactivity of tricalcium phosphate materials, it has both activity and degradability without introducing impurities, and has high biocompatibility. At the same time, the whiskers have a toughening effect and have high mechanical and mechanical properties. . However, the melting temperature of calcium metaphosphate whisker is very low, it will melt at 970 degrees, and it is difficult to exist stably at a high temperature of 1100 degrees sintering temperature, which affects the mechanical toughness. In order to solve this problem, calcium and phosphorus additives that can be sintered at low temperature are used to sinter at 960 degrees, so that the material has good toughness and activity.