38results about How to "Increased degradation rate" patented technology

The invention relates to the technical field of advertisement display, decorative materials and environment-friendly materials, in particular to a degradable advertisement inkjet film and a preparation method thereof.The degradable advertisement inkjet film comprises a glittering ink absorption layer, a degradation starting layer and a main body layer arranged between the glittering ink absorption layer and the degradation starting layer; 1%-2% of an ultraviolet light absorber; and the like. According to the degradable advertisement jet drawing film, by means of the three-layer structural design, the perfect combination of the advertisement effect and environment-friendly degradation is achieved, the flash ink absorption layer provides the unique visual effect, meanwhile, the graphene nanosheet modified titanium oxide photocatalytic layer can catalyze the degradation process under illumination, the main body layer guarantees the mechanical and printing performance of the film, and the degradable advertisement jet drawing film has the good application prospect. And the degradation starting layer realizes rapid degradation through a microbial enzyme complex, and particularly, the graphene nanosheet modified titanium oxide photocatalytic layer is used as a key technology, so that the degradation rate of the advertisement film is remarkably improved.

The invention belongs to the technical field of water treatment, and relates to a method for removing new pollutants in water by using a far ultraviolet assisted sodium hypochlorite system. The method comprises the following steps: S1, adjusting the pH value of a to-be-treated aqueous solution containing new pollutants to 4-10; s2, adding a sodium hypochlorite oxidizing agent into the aqueous solution to be treated and continuously stirring; and S3, carrying out a reaction under the ultraviolet wavelength of 200 to 230 nm. Compared with the prior art, the method has the advantages that the far ultraviolet light source and the sodium hypochlorite are jointly applied, so that the oxidation capacity of the sodium hypochlorite is improved, meanwhile, the high-energy characteristic of far ultraviolet light is fully played, efficient photocatalytic degradation of new pollutants difficult to degrade is realized, and the overall water treatment efficiency is remarkably improved.

The invention provides a wastewater treatment method. The wastewater treatment method comprises the following steps: S1, acidifying wastewater, and mixing the acidified wastewater with activated carbon and persulfate for reaction to obtain acidified wastewater; and S2, inserting a cathode plate and an anode plate into the acidified wastewater, and then carrying out electrocatalytic reaction. According to the wastewater treatment method provided by the invention, organic pollutants in wastewater are degraded by coupling three-dimensional electrocatalytic oxidation with persulfate activation until the wastewater reaches the standard and is discharged.

The invention relates to the technical field of composite biological coatings. Specifically, the invention relates to a hydrophobic composite layer on a medical degradable magnesium alloy matrix and a preparation method of the hydrophobic composite layer. In the preparation method, firstly, a porous ceramic oxide layer is formed on a magnesium alloy matrix through micro-arc oxidation treatment, so that the corrosion rate of the magnesium alloy is reduced; then, a strontium-doped hydroxyapatite layer is prepared on the surface of the micro-arc oxidation layer by using a chemical deposition method, so that the biocompatibility of the magnesium alloy is improved; and finally, dipping and pulling the magnesium alloy subjected to micro-arc oxidation and chemical deposition treatment in a polylactic acid solution containing nano-hydroxyapatite for one time or multiple times, so as to form a hydrophobic polymer layer. According to the hydrophobic composite layer prepared by the method, the corrosion resistance and the biocompatibility of the magnesium alloy are improved at the same time. The invention also relates to a magnesium alloy implant article comprising the hydrophobic composite layer.

The present application relates to the field of environment-friendly materials and its preparation technology, and particularly relates to a degradable environment-friendly paper cup interior coating and a preparation method thereof. The method comprises the following steps: firstly, synthesizing polymerizable quaternary ammonium salt surfactant (RPKO-X), and then introducing the polymerizable quaternary ammonium salt surfactant and a bio-based polymer solution into a polyacrylate molecular chain by a redox initiation polymerization method, so as to obtain a degradable acrylate emulsion for paper cup interior coating. By introducing the hydrophobic monomer RPKO-X with emulsifier characteristics, a stronger crosslinking network is formed, which can significantly improve the water resistance and oil resistance of the coating. Meanwhile, by introducing the bio-based material polyvinyl alcohol 2688, the environmental friendliness of the coating is enhanced, and the rapid degradation of the coating after use is promoted. By using the redox initiation polymerization system, the method is simple to prepare, can be prepared under mild conditions, and the emulsion particle size is uniform and stable.

The invention provides biomass cotton cellulose based on waste cotton textiles and a preparation method thereof, and the method comprises the following steps: crushing the waste cotton textiles, sterilizing, disinfecting, drying, dipping in alkali liquor and cooking, adding a DES eutectic solvent, mixing, pulping the obtained material, bleaching, desanding, concentrating and papermaking to obtain the biomass cotton cellulose. Wherein a metal chlorate catalyst and an auxiliary agent are added during cooking. According to the method, the waste cotton textile is adopted as a raw material, and the cotton cellulose with excellent performance is prepared by performing high-added-value recovery on the waste cotton textile, so that the environmental problem caused by the waste cotton textile can be effectively relieved, and the resource waste is reduced. Meanwhile, the production cost of the cotton cellulose can be reduced, and the problem of insufficient production raw materials of existing biomass cellulose products is solved.

The invention discloses a preparation method of a fully bio-enzyme-degradable particle, and relates to the technical field of biodegradable materials. The invention uses 5,6-epoxyhexyltriethoxysilane to modify modified calcium carbonate and a trace amount of ferrosoferric oxide, and then disperses them in a cellulose hydrogel precursor solution. When cellulose self-associates into a three-dimensional network structure, the particles are firmly fixed in its micro-nano pore structure, thereby enhancing the stability of the degradation particle matrix, using starch as a water absorbent, epoxy soybean oil as a plasticizer, and modified rigid particle composite cellulose as a reinforcement, and blending with polylactic acid as a carrier, and then, by hot pressing and curing to obtain degradation particles, the inorganic nanoparticles are more firmly combined with the matrix under the dual influence of temperature and pressure, thereby enhancing the mechanical properties of the film.

This utility model discloses a fluorocarbon-free packaging paper. The utility model includes a paper base layer: a first waterproof layer is disposed on the top of the paper base layer, and a second waterproof layer is disposed on the bottom of the paper base layer. A nylon mesh and a degradation layer are disposed on the top of the first waterproof layer. With this utility model, users can tear the food packaging paper along the creases to expose the nylon mesh inside the food packaging paper. Pulling the nylon mesh then cuts the food packaging paper, thereby destroying the oil-proof layer. This breaks down the overall structure of the paper base layer, the first waterproof layer, the second waterproof layer, the reinforcing layer, and the oil-proof layer, allowing them to fully contact the outside environment and increasing the degradation rate of the food packaging paper. Furthermore, the waterproof adhesive, the first oil-proof adhesive, the second oil-proof adhesive, and the oil-proof layer are disposed on the food packaging paper, preventing the food packaging paper from being soaked in oil or water. The nylon mesh facilitates the separation of the printed layer and the food packaging paper, promoting the degradation of the food packaging paper.

This invention provides a method for preparing Ni3C / Bi5O7I composite material and its application, relating to the field of photocatalysis technology. The preparation method includes: Step 1: Adding KI to a suspension containing Bi(NO3)3·5H2O and NaOH, stirring, and then carrying out a hydrothermal reaction. The resulting product is cooled to room temperature, centrifuged, washed, and dried to obtain Bi5O7I; Step 2: Adding nickel acetate to an oleylamine aqueous solution under a nitrogen atmosphere, carrying out a hydrothermal reaction, cooling to room temperature, and the resulting precipitate is centrifuged, washed, and dried to obtain Ni3C; Step 3: Adding Bi(NO3)3·5H2O solution dropwise to a suspension containing Bi5O7I and Ni3C under vigorous stirring, and then carrying out a hydrothermal reaction. The resulting precipitate is centrifuged, washed, and vacuum dried to obtain Ni3C / Bi5O7I. This invention improves the photocatalytic activity of Bi5O7I by introducing Ni3C into it, and gives the resulting photocatalytic material the ability to efficiently and stably degrade phenol in water, which has potential application value in the field of phenol-containing wastewater purification.

The invention discloses a biodegradable PAET / PGA blended skin-core composite fiber which is prepared by taking PAET as a skin layer and a blend of PAET and PGA as a core layer through a skin-core composite melt spinning process. Wherein the mass ratio of the skin layer to the core layer is (1: 9)-(3: 7), and the mass fraction of PGA in the PAET and PGA blend forming the core layer is 5-15%. The preparation method comprises the following steps: (1) drying; (2) respectively melting and extruding the skin layer PAET slice and the core layer PAET and PGA blend through a screw extruder to prepare continuous nascent fibers; (3) carrying out circular blowing cooling treatment on the nascent fiber; (4) drafting and winding the cooled nascent fiber; and (5) preparing the PAET / PGA blended sheath-core composite fiber. The environment-friendly plastic has good biodegradability, meets the requirements of different fields while reducing environmental pollution, gives consideration to both mechanical properties and service life, and achieves the purposes of environmental protection and ecology.

The present invention relates to a chitosan oligosaccharide fermentation control method and system, and relates to the technical field of fermentation control, including: obtaining a fermentation control parameter space, randomly generating multiple initial fermentation control parameters, performing chitosan dissolution analysis according to the initial pH and initial chitosan concentration in the initial fermentation control parameters, obtaining multiple initial chitosan dissolution parameters, performing contact analysis between enzyme and chitosan, obtaining multiple initial chitosan contact parameters, performing contact analysis between enzyme and oxygen, obtaining multiple initial oxygen contact parameters, respectively combining multiple initial fermentation times to perform chitosan oligosaccharide fermentation prediction, obtaining multiple fermentation yield parameters and multiple overdecomposition parameters, and calculating multiple initial fermentation fitnesses; continuing to perform iterative optimization of fermentation control parameters, obtaining optimal fermentation control parameters, and performing chitosan oligosaccharide fermentation control. The present invention achieves the technical effect of considering the contact between enzyme, chitosan and oxygen, optimizing chitosan fermentation control and improving fermentation effect.

The application discloses an environment-friendly anti-static bubble bag and belongs to the technical field of bubble bags. The bubble bag comprises an upper bag body, a lower bag body and a bag sealing assembly which are matched with each other. The upper bag body and the lower bag body are both made of degradable materials. Bubble film layers are compounded on the outer walls of the upper bag body and the lower bag body. Anti-static coating layers are arranged on the outer surfaces of the upper bag body and the lower bag body. The bag sealing assembly is detachably connected to the butt joint positions of the upper bag body and the lower bag body. The upper bag body and the lower bag body are detachably separated through the detachable bag sealing assembly. The upper bag body and the lower bag body are made of degradable materials. The outer walls of the upper bag body and the lower bag body are compounded with bubble film layers, so that the cushioning and protection performance is considered. The bag body can be disassembled when the articles are taken out through the detachable design of the bag sealing assembly, so that the inner wall of the bubble bag without the anti-static coating layer is fully exposed. The degradable base material can be greatly accelerated in the degradation rate. The packaging protection practicability, the anti-static safety and the whole-cycle environment-friendly adaptability are considered.

The invention belongs to the technical field of polyurethane, and particularly relates to large-aperture biocompatible polyurethane sponge as well as a preparation method and application thereof. The large-aperture biocompatible polyurethane sponge is prepared by soaking a component A and a component B, wherein the component A comprises polyether polyol X, polyether polyol Y, a chain extender, a catalyst, a pore opening agent and a foaming agent; wherein the component B is prepared from modified MDI and liquefied MDI; the polyether polyol X is prepared by taking hydroxy anthraquinone and low-molecular-weight polyether polyol as a composite initiator and epoxypropane as a polymerization monomer; the average functionality of the polyether polyol Y is 3 to 4, and the number-average molecular weight of the polyether polyol Y is 4000 to 7000 g / mol. The large-aperture biocompatibility polyurethane sponge provided by the invention is large in aperture and strong in biocompatibility. The preparation method is simple in process and safe to operate. The prepared polyurethane sponge is used for sewage treatment, and the degradation rate of microorganisms is increased.

This invention relates to a method for tetracycline degradation based on a Cu-CNv heterogeneous Fenton-like catalyst. Using Cu-CNv as the catalyst, this invention utilizes heterogeneous Fenton-like advanced oxidation technology to mineralize and decompose antibiotics adsorbed in the aquatic environment. It exhibits high catalytic efficiency; the Cu-CNv heterojunction achieves a 93.98% degradation rate of 50 mg / L tetracycline-like Fenton within 40 minutes. The method is simple to operate, has good catalyst stability, and does not produce copper sludge. It solves the problems of traditional homogeneous Fenton technology, such as narrow pH range, inability to recover the catalyst, high H2O2 consumption, low catalytic efficiency, and low active sites.

The invention discloses a method for pyrolyzing waste polypropylene plastic into a carbonylated carbon nanomaterial and application of the carbonylated carbon nanomaterial, and belongs to the technical field of solid waste resource utilization. The method comprises the following steps: by taking waste polypropylene plastic as a raw material and nickel sesquioxide as a catalyst, pyrolyzing a polypropylene molecular chain at 450-600 DEG C by adopting a low-temperature pyrolysis technology, and finally converting the waste polypropylene plastic into the carbonylated carbon nanomaterial through catalytic pyrolysis, cyclization and aromatization reaction and dehydrogenation reaction. According to the method disclosed by the invention, the waste plastic is converted into the carbon nanomaterial with high additional value, so that the problem of pollution caused by the waste plastic is effectively solved, a new way is provided for recycling the waste plastic, and carbon emission reduction is favorably realized. The method saves energy, reduces emission of harmful gas, is more environment-friendly, is simple and easy to control in the pyrolysis process, and is beneficial to large-scale production.

The invention discloses a biochar electroactive bacterium complex for enhancing degradation of hydrophobic organic pollutants and a preparation method of the biochar electroactive bacterium complex. The method comprises the following steps: (1) pyrolyzing lignocellulose-based biomass under a high-temperature anaerobic condition to obtain original biochar; (2) under an ice bath condition, mixing the original charcoal, NaNO3, concentrated sulfuric acid and KMnO4, carrying out a first oxidation reaction, and keeping continuous stirring; (3) adding a sulfuric acid solution for a second oxidation reaction of the biochar, and after the temperature is reduced by 60 DEG C, adding an H2O2 solution to terminate the reaction; and (4) cleaning the modified biochar material with a mixed solution of sulfuric acid and H2O2, an HCl solution and deionized water until the pH value is neutral, and finally obtaining the modified biochar material. According to the method, the dual advantages of physical adsorption and biodegradation are combined, and an efficient, green and sustainable solution is provided for removal of hydrophobic organic pollutants in a water body.

The invention discloses a piezoelectric polymer and a blood pressure monitoring device based on the piezoelectric polymer, and relates to the technical field of blood pressure monitoring, the piezoelectric polymer comprises polyvinylidene fluoride, polyvinyl alcohol and N, N-dimethylacetamide according to the weight ratio of (61-71): (19-22): (400-500); the blood pressure monitoring device comprises a pressure sensor and a signal processing system, and the pressure sensor is in communication connection with the signal processing system; a sensitive material in the pressure sensor is a piezoelectric polymer; the piezoelectric polymer has higher piezoelectric property and has higher sensitivity to the real-time change state of the blood pressure in the blood pressure monitoring process, the detection result can be more accurate, and the device is suitable for being used in the treatment process of critical patients.

The application provides an electrode material and a preparation method and electrode thereof, wherein the raw materials of the electrode material by weight comprise 45-75% carbon nanotubes, 5-20% cobalt oxide, 5-10% oxide of metal M, 1-5% conductive agent, 1-5% catalyst, 5-10% carrier and 1-5% structure regulator; M is selected from one or more of iron, nickel, copper and zinc; the method comprises: the catalyst is composed of a first part and a second part; step (1), mixing the carbon nanotubes, cobalt oxide, oxide of metal M, conductive agent, carrier, structure regulator and 0-5wt% first part catalyst to obtain a mixture; step (2), sequentially solidifying and calcining the mixture obtained in step (1) to obtain a precursor; step (3), modifying the precursor in step (2) with the second part catalyst to obtain the electrode material; the electrode material prepared by the application has excellent nitrogen pollutant removal effect and long service life.

The utility model discloses a kind of disturbance type sewage treatment equipment based on microbial inoculant processing, it is related to sewage treatment technical field, including processing box, the inoculant delivery assembly is arranged on the upper surface of processing box, the oxygen delivery assembly is arranged on the lower surface of processing box, the stirring assembly is arranged in the inside of processing box;The stirring assembly includes growth frame, the growth frame is arranged in the inside of processing box, a plurality of connecting rods are fixedly connected in the middle of growth frame, the utility model provides a large number of attachment growth surface area for microorganism by setting built-in growth frame's stirring assembly, effectively improve the biomass in reactor, enhance system processing capacity and stability;The design of unique hyperboloid vertical shaft stirring disc is matched with the same direction circular arc disturbance strip, can produce soft and multi-dimensional three-dimensional flow field under the driving of submersible motor.

The invention belongs to the technical field of oil field underground yield and injection increasing equipment, and discloses an all-metal soluble ball seat based on bridge shooting combined fracturing construction and a using method of the all-metal soluble ball seat. An upper cone is in a circular truncated cone shape, a sliding cavity is formed in the upper cone along the center axis, a center pull rod is arranged in the sliding cavity, and the outer conical surface of the upper cone is sleeved with a metal sealing ring; a sealing ring is arranged on the outer side face of the metal sealing ring, a slip is arranged outside the small end of the upper cone and on one side of the metal sealing ring in a sleeved mode, a tailstock is arranged at the end, away from the upper cone, of the slip, one end of the center pull rod is in threaded connection with the tailstock, and the other end of the center pull rod is fixedly connected with a pressing cap capable of abutting against the large end face of the upper cone. A centralizing sliding block is arranged on the portion, located in the sliding cavity, of the center pull rod in a sleeved mode, and the centralizing sliding block is in clearance fit with the sliding cavity. The slip centralizing device has the advantages that the slip centralizing effect is good, meanwhile, the number of parts left in a shaft is small, and rapid degradation can be achieved.

The application discloses a modular microbial fuel cell type artificial wetland system, and relates to the technical field of water pollution control and water treatment. The modular microbial fuel cell type artificial wetland system comprises a water inlet channel, a wetland treatment area and a water outlet channel which are sequentially connected. The wetland treatment area comprises a plurality of treatment units which are arranged in parallel. The water inlet of the treatment unit is connected with the water inlet channel, and the water outlet of the treatment unit is connected with the water outlet channel. Each treatment unit comprises a plurality of microbial fuel cells which are connected in series. The two ends of the microbial fuel cell are respectively provided with a water inlet and a water outlet. The electrode lead-out ends with opposite polarities are arranged on the water inlet side and the water outlet side respectively. The water inlets and the water outlets of adjacent microbial fuel cells are detachably connected. The electrode lead-out ends with opposite polarities of adjacent microbial fuel cells are detachably connected. The application can enhance the organic matter degradation capacity and degradation rate of the wetland system by using the microbial fuel cell, and can ensure the electric energy output of the microbial fuel cell on the basis of solving the clogging problem.

The invention discloses a nano calcium carbonate special for biodegradable materials, a preparation method and an application thereof. The nano calcium carbonate of the invention is prepared from the following raw materials in percentage by mass: 65-75% of modified nano calcium carbonate powder; 3-8% of nitrogen-containing inorganic salt; 3-8% of acetylcitrate tributyl; 1-2% of cellulose acylate; 5-10% of polybutylene glycol oxalate; and 10-15% of PLA resin. The nano calcium carbonate prepared by the invention has good compatibility with degradable plastic substrates, can effectively improve the ductility and toughness of degradable plastics without losing strength and modulus, and can promote the degradation rate of degradable materials, and each component can synergistically enhance the effect, the preparation process is simple, and it is suitable for industrial promotion and application.

This invention discloses an environmentally friendly antistatic bubble bag, belonging to the field of bubble bag technology. It includes an upper bag body, a lower bag body, and a sealing assembly that cooperate with each other. Both the upper and lower bag bodies are made of biodegradable materials, and both have a bubble film layer laminated to their outer walls. Both the upper and lower bag bodies also have an antistatic coating on their outer surfaces. The sealing assembly is detachably connected to the joint between the upper and lower bag bodies, allowing for easy separation. The combination of biodegradable materials for the upper and lower bag bodies, the bubble film layer on the outer wall providing cushioning and protection, and the detachable design of the sealing assembly allows the bag to be disassembled when the contents are removed, fully exposing the inner wall of the bubble bag without the antistatic coating. This significantly accelerates the degradation rate of the biodegradable substrate, balancing practicality, antistatic safety, and lifecycle environmental adaptability.

This invention relates to highly efficient corn straw-degrading bacteria, specifically the actinomycetes *Streptomyces* sp. GS9, *Streptomyces canus* MD31, *Streptomyces fagopyri* MD55, *Streptomyces cinnabarigriseus* MD63, and a complex bacterial flora. The degrading bacteria or complex bacterial agents obtained through screening in this invention can withstand low and high temperatures and complex acidic and alkaline environments, making them suitable for the complex environment of straw return to the field. They significantly improve the straw degradation rate and increase soil organic matter content.

The invention belongs to the technical field of chemical cleaning, and particularly relates to an environment-friendly efficient cleaning agent for a membrane material based on an environment-degradable material, which comprises a stimuli-responsive cleavable surfactant, a biogenic polycarboxylic acid chelating system, an environment-induced degradation accelerator, a modified biopolymer membrane layer protective agent and a permeation enhancement cofactor, the controlled extinguishing of interfacial activity is realized by utilizing the acid-induced fracture characteristic of an acetal bond of a surfactant, and active induced degradation is realized through a microcapsule packaging oxidation catalysis system; while efficient decontamination and membrane protection are realized, the medicament degradation period is remarkably shortened, and the foam impact of waste liquid on a biochemical system is thoroughly eliminated.

The application discloses an anaerobic system nutrient salt adding method based on AI intelligent control, relates to the technical field of industrial wastewater biological treatment, and comprises the following steps: collecting real-time water quality time sequence data and laboratory biochemical true value data, and constructing a multi-modal input vector; inputting an LSTM-Attention model to generate an anaerobic bacteria specific growth rate prediction value and a dynamic dosing weight coefficient; based on the weight coefficient, a double-loop control strategy is executed, the total dosing amount target is optimized in the outer loop, and the instantaneous dosing flow instruction is calculated in the inner loop; the instruction is sent to adjust the dosing amount, and the true value deviation value is calculated; when the deviation value exceeds the threshold value, sensor calibration and model incremental training update are executed. The application solves the problems of blindness in addition and system instability caused by the mismatch between the long lag of the traditional control mode and the fast fluctuation of the water hydraulic load.

This invention provides the application of *Pseudomonas* and its enzyme preparations in cellulose degradation, relating to the fields of microbial resource utilization and ecological agriculture. The *Pseudomonas* strain AHhStB30 is deposited at the China Center for Type Culture Collection (CCTCC) with accession number CCTCC NO: M 2025628, and the deposit date is March 31, 2025. The *Pseudomonas* strain of this invention is derived from autumn grassland soil and can significantly improve cellulose degradation efficiency under low-temperature conditions. It can efficiently decompose agricultural waste and industrial cellulose waste, accelerate carbon cycling in synergy with the microbial system, maintain high enzyme activity at low temperatures, and reduce pretreatment energy consumption. The *Pseudomonas* strain of this invention has a long-lasting activity retention time and can significantly improve the cellulose degradation rate. Cellulose treated with the *Pseudomonas* strain of this invention or its enzyme preparations degrades more rapidly at low temperatures and exhibits higher activity at low temperatures.

The utility model relates to sewage treatment technical field, and disclose a kind of to realize MBR membrane processing low carbon and intelligent water production device, including biochemical unit and MBR membrane biological reaction tank, water inlet pipe is connected and arranged on biochemical unit, MBR membrane module is provided in MBR membrane biological reaction tank, clean water pool is provided in MBR membrane biological reaction tank side, membrane washing mechanism is provided between MBR membrane biological reaction tank and clean water pool, aeration fan is provided on biochemical unit and MBR membrane biological reaction tank, water is discharged through water production pump between MBR membrane biological reaction tank and clean water pool, for the water filtered in MBR membrane biological reaction tank is discharged into clean water pool, backwash water pump is provided between membrane washing mechanism and MBR membrane biological reaction tank, for the water in clean water pool is discharged into MBR membrane biological reaction tank inside and carries out membrane flushing, water outlet pipe is fixedly connected on clean water pool side, water production device is also provided with PLC controller, the problem that existing equipment needs artificial accurate control has been solved.

The present application belongs to the technical field of groundwater pollution remediation, and particularly relates to a biological remediation composition for remediation of contaminated groundwater, a remediation agent, and a preparation method and application thereof. The biological remediation composition for remediation of contaminated groundwater comprises a composite bacterial flora, a slow-release carrier material, a nutrient slow-release agent, a surfactant, and a stabilizer; the composite bacterial flora is composed of the following bacterial strains: Bacillus subtilis, Pseudomonas putida, Desulfovibrio and Serratia marcescens. The biological remediation composition provided by the present application has high remediation efficiency and improves the removal rate of diesel oil, chlorophenol, and sulfadimethoxine.

This invention relates to a biliary stent material, its preparation method, and its application, belonging to the field of biliary stent technology. A method for preparing a biliary stent material includes the following steps: dissolving 4-(ethylene glycol ketal)-ε-caprolactone and caprolactone copolymer in an organic solvent, then adding barium sulfate to obtain a mixed solution; after the organic solvent in the mixed solution evaporates, a composite casting membrane is obtained; the composite casting membrane is coated onto the surface of a mold, heated, cooled, and the mold is removed to obtain a tubular stent; the tubular stent is immersed in a dopamine hydrochloride buffer solution and stirred to obtain a tubular stent loaded with a polydopamine coating; curcumin is added to an amnion decellularized hydrogel solution to obtain a composite hydrogel solution; the tubular stent loaded with the polydopamine coating is then immersed in the composite hydrogel solution and allowed to gel statically to obtain the biliary stent material. The biliary stent material of this invention has the characteristics of being biodegradable, having good flexibility, and excellent biocompatibility.