398results about How to "Improve degradation efficiency" patented technology

The invention discloses a CoFeCuMn LDH nanosheet, a confinement catalytic membrane and a preparation method of the CoFeCuMn LDH nanosheet. The preparation method of the CoFeCuMn LDH nanosheet comprises the steps that A1, cobalt salt, ferric salt, copper salt and manganese salt are dissolved in pure water according to a preset proportion to prepare a first solution, sodium hydroxide is dissolved in pure water to prepare a second solution, and sodium carbonate is dissolved in pure water to prepare a third solution; a2, adding the first solution and the second solution into the third solution, and stirring to obtain a mixed solution; a3, carrying out hydrothermal reaction on the mixed solution; a4, centrifugally washing the product obtained in the step A3 to obtain a precipitate; and A5, the sediment is dried, and the CoFeCuMn LDH nanosheet is obtained. According to the CoFeCuMn LDH nanosheet, the confinement catalytic membrane and the preparation methods of the CoFeCuMn LDH nanosheet and the confinement catalytic membrane, the degradation efficiency and the degradation rate of new pollutants are remarkably improved.

The invention relates to the technical field of air pollution prevention and control, in particular to a sewage deodorization system and method based on a biological filter, and the system comprises a data acquisition module, a system preprocessing module, a system deodorization effect evaluation module, a system operation performance evaluation module, a system efficiency comprehensive analysis and processing module and a system database. According to the sewage deodorization system and method based on the biological filter, the system performance and the deodorization efficiency are comprehensively analyzed, and comprehensive system energy efficiency evaluation is provided. By analyzing the two indexes, the strong and weak points of the system can be identified, so that the resource configuration is optimized, and the overall efficiency of the system is improved. The deodorization effect and the operation performance are comprehensively considered, and more comprehensive and more accurate decisions can be made. By improving the deodorization effect, adverse effects on the surrounding environment and residents can be reduced. Meanwhile, the good operation performance can help to reduce the maintenance and operation cost.

The invention relates to the field of environmental remediation, and discloses a remediation method for high-concentration organic pollutants in soil, which comprises the following steps: firstly, injecting a nano zero-valent iron (nZVI) suspension into the contaminated soil for chemical reduction treatment, then adding sodium persulfate for oxidation treatment, and then adding a nano zero-valent iron (nZVI) suspension into the contaminated soil; the complex organic pollutants are converted into biodegradable intermediate products; then, two-stage microbial communities are introduced in sequence, the first-stage microbial community is used for degrading alcohol and ketone intermediate products, the second-stage microbial community is used for degrading organic acid intermediate products, and thorough mineralization of pollutants is achieved. According to the method, the pollutant degradation rate and the final removal effect can be remarkably improved, and the method is suitable for treatment scenes of various high-concentration organic pollutants and has high adaptability and economic benefits.

The invention discloses a CoFe-coated NBC composite catalyst and a preparation method and application thereof.The preparation method includes the steps that collected wheat straw is pretreated, wheat straw biomass powder is obtained after pretreatment is finished, the wheat straw biomass powder, Co (NO3) 2.6 H2O and Fe (NO3) 3.9 H2O are dissolved in water, isopropanol and ammonia water are added, the mixture is stirred to be uniform, then the solution is transferred into a high-pressure autoclave, and the CoFe-coated NBC composite catalyst is prepared through a hydrothermal method; a hydrothermal reaction is carried out, and a CoFe-coated NBC precursor is obtained after the hydrothermal reaction is finished; the CoFe-coated NBC precursor is placed in a tube furnace in the N2 atmosphere to be calcined, after calcination is finished, the material is cooled to the room temperature, then the material is taken out and ground, and the CoFe-coated NBC composite catalyst is obtained, the prepared CoFe-coated NBC composite catalyst has the high specific surface area, rich pore structures and a large number of active sites, and activation of PMS and degradation of pollutants are facilitated.

The invention discloses feruloyl esterase fermentation preparation and application of feruloyl esterase in polyester plastic degradation, and belongs to the field of environmental science. According to the method, feruloyl esterase FAE4 derived from Anerocephalum thermophilum is prepared through fermentation, and is compounded with polyester degrading enzymes which are different in source and are used for degrading polyester plastic oligomers, so that a compound reaction system which remarkably improves the degradation efficiency of poly (butylene adipate-co-terephthalate) or poly (butylene adipate-co-terephthalate) (PBAT) and the content proportion of a final product is obtained; good industrial prospects are realized.

The invention belongs to the technical field of electrocatalytic oxidation, and particularly relates to an electrocatalytic active anode film capable of efficiently producing active chlorine and a preparation method and application of the electrocatalytic active anode film. Porous foam titanium is used as a base material, a surface oxidation layer is removed through acidification pretreatment, a titanium dioxide nanotube array grows on the base material in situ through two times of anodic oxidation to serve as a middle layer, and the binding force of the catalyst and the substrate is effectively improved; meanwhile, Ti < 4 + > in TiO2 is partially converted into Ti < 3 + > through a cathode reduction method, so that the conductivity of the material can be enhanced; furthermore, a RuO2 catalytic layer capable of reducing the chlorine evolution potential is loaded on the titanium dioxide nanotube array, so that the electrocatalytic activity is improved. The prepared anode film has a porous structure, and when the anode film is applied to a Flow-through system, the yield of active chlorine and the contact oxidation efficiency of pollutants on an interface of the anode film are improved, and the problem of mass transfer limitation is solved. The electrocatalytic active anode film can realize high-efficiency decoloration of printing and dyeing wastewater under the conditions of no addition of chemicals and low energy consumption.

The invention discloses a method for rapidly detecting the content of a residual flocculating agent in washing machine-made sand, which comprises the following steps of: screening out particles with the particle size of more than 4.75 mm from machine-made sand to be detected, respectively testing the critical water contents of degraded and untreated machine-made sand samples, and determining the mass concentration range of the flocculating agent on the basis of the difference value of the critical water contents of the two kinds of machine-made sand. Compared with tests through neat paste, mortar and concrete systems, deviation possibly caused by introduction of other materials is avoided, and the method is more convenient, faster and more accurate. A'critical water absorption 'test method is provided according to the stability of the stacking state of sand, a transparent circular truncated cone test mold with scales is designed, the filling height and the tamping method of each layer of sample are accurately stipulated, and the test normalization and the test result repeatability of different time, different places and different operators are improved.

The invention belongs to the technical field of friction catalysis, and particularly relates to application of an aluminum oxide substrate in friction catalytic degradation of high-concentration organic dye wastewater, an aluminum oxide ceramic chip is used as a substrate, titanium dioxide nano powder is used as a catalyst, and the aluminum oxide ceramic chip is fixed at the bottom of a flat-bottom glass beaker; the method comprises the following steps: adding organic dye wastewater, a magnetic turntable and titanium dioxide nano powder into a flat-bottomed glass beaker, then putting the flat-bottomed glass beaker in a dark environment at room temperature, stirring and reacting on a magnetic stirrer for 90-150 minutes, and after the reaction is completed, completely degrading organic dye in the wastewater. According to the method, the aluminum oxide ceramic chip is added into a system for performing friction catalytic degradation on the organic dye wastewater by using the titanium dioxide nano powder as the substrate, so that the degradation rate of the organic dye is greatly improved, the complete degradation time of the organic dye is shortened, and a new thought is provided for performing friction catalytic degradation on the organic dye wastewater by using the titanium dioxide nano powder.

The invention provides aluminum-doped hematite, a preparation method of the aluminum-doped hematite and application of the aluminum-doped hematite in catalyzing peroxides to degrade organic pollutants or remove pathogenic bacteria. The preparation method of the aluminum-doped hematite comprises the following steps: adding ferric iron salt and aluminum salt into deionized water, reacting, precipitating to separate out a product, washing, drying and grinding to obtain a precursor; calcining the precursor, and then washing and drying to obtain the aluminum-doped hematite. The preparation method is simple, cheap and easily available in raw materials, low in cost, green, safe and environment-friendly; the aluminum element is introduced into the hematite, so that the catalytic activity of the hematite is improved, and the catalytic condition is easy to realize; the aluminum-doped hematite disclosed by the invention has excellent capability of activating peroxide, so that the aluminum-doped hematite shows excellent performance in the aspects of removing environmental organic pollutants and sterilizing.

The invention discloses a cationic polymer-based proteolysis targeting chimera as well as preparation and application thereof, and belongs to the fields of targeting protein degradation and nanotechnology. According to the chimera, a cationic polymer is used as a connecting arm to connect a target protein ligand and an E3 ubiquitin ligase ligand to form a ternary complex, so that efficient degradation of target protein is realized. By adjusting the ligand proportion, chimeras with different degradation efficiencies can be synthesized, and accurate regulation and control are realized. The pH-responsive nano-drug obtained by hydrolyzing the targeting chimera by using the targeting protein can respond to an acidic tumor microenvironment, specifically release the chimera, and improve the targeting property and the treatment effect of the drug. Compared with the traditional PROTACs, the compound has higher bioavailability and tumor permeation effect; the preparation method of the nano-drug is simple and easy to implement, provides possibility for preparation of high-performance nano-drugs, shows potential in preparation of anti-tumor cell drugs, provides new thoughts and methods for tumor treatment, and has important clinical application value.

The invention discloses an aluminum-based metal catalyst as well as a preparation method and application thereof, the efficient novel aluminum-based metal catalyst is prepared through simple and low-cost smelting, casting and crushing processes, the degradation efficiency of a persulfate advanced oxidation system on sewage pollutants is remarkably improved, and the environmental pollution is reduced. The degradation efficiency and the catalyst cost are both lower than those of a conventional Fe-based catalyst, and the problem that the catalytic efficiency is reduced due to inactivation of Fe < 2 + > in the conventional Fe-based catalyst is solved. According to the invention, the high activity of catalytic ions in the reaction process is realized through a multi-component alloy component system, which is the future development direction of persulfate advanced oxidation system catalysts.

The invention discloses a pulse discharge eddy current cavitation generator which comprises an eddy current container, and the eddy current container is provided with a liquid inlet pipe allowing liquid to be guided in tangentially. An inlet of the liquid outlet pipe is communicated with the center of the vortex container, and the liquid outlet pipe is provided with an inner diameter decreasing section, a throat part and an inner diameter increasing section which are sequentially arranged from bottom to top; the flow guide part is arranged in the center of the vortex container and is positioned on the lower side of the liquid outlet pipe; from bottom to top, the outer diameter of the flow guide piece is gradually reduced; the flow guide part and the liquid outlet pipe are coaxially arranged; a first electrode is arranged in the liquid outlet pipe, and a second electrode opposite to the first electrode is arranged in the flow guide part; the liquid outlet pipe is provided with an electrode holder for fixing the first electrode; and the liquid outlet pipe body is provided with a liquid outlet. The vortex hydrodynamic cavitation generator and the nanosecond pulse device are combined in the same device, so that the energy consumption of the device is reduced, the discharge efficiency and the organic matter degradation efficiency are improved, and the space is saved.

The invention discloses a covalent lysosome targeting chimera based on a nucleic acid aptamer and application of the covalent lysosome targeting chimera in protein degradation and immunotherapy, and belongs to the technical field of biology. The invention designs a covalent lysosome targeting chimera with click chemical reaction activity, and the simple and efficient covalent lysosome targeting chimera is used for realizing efficient protein degradation at the levels of cells and living bodies. When the tool is used for targeted degradation of immunotherapy biomarkers, immunogenic apoptosis of tumor cells can be caused, so that killing of an immune system to tumors is more efficiently activated. Meanwhile, the covalent lysosome targeting chimera overcomes the problem of immune-related side effects confronted by existing antibodies and polysaccharide peptide drugs, and can effectively avoid the potential occurrence risk of the immune-related side effects while efficiently degrading the target protein.

The invention relates to a method for treating ammonia-nitrogen wastewater based on photocatalysis and ozonation coupling, and belongs to the technical field of wastewater treatment.The method comprises the following steps that S1, early-stage preparation is conducted on wastewater treatment; s2, photocatalytic ozone oxidation coupling treatment; s3, wastewater effluent treatment; s4, regeneration and recovery of the catalyst; and S5, monitoring the effluent quality of the wastewater. According to the method for treating the ammonia-nitrogen wastewater based on photocatalysis and ozonation coupling, the ammonia-nitrogen wastewater is treated by adopting the wastewater treatment method, so that the degradation efficiency of ammonia nitrogen can be effectively improved, and ammonia nitrogen components in the wastewater can be more effectively removed; in the photocatalytic reaction process, pollutants are decomposed into harmless substances, so that the problem of secondary pollution is avoided; in the ozone oxidation process, ozone can be quickly decomposed, the influence on follow-up treatment facilities is reduced, meanwhile, light energy is utilized in the photocatalytic reaction, the advantages of energy conservation and environmental protection are achieved, and the advantages of efficient degradation, no secondary pollution, energy conservation and environmental protection are achieved.

The invention relates to the technical field of wastewater treatment, in particular to a preparation method and application of iron modified montmorillonite. The preparation method comprises the following steps: adding montmorillonite into water, carrying out ultrasonic treatment, and then centrifuging to obtain supernate; centrifuging the supernate, and freeze-drying the obtained precipitate to obtain pretreated montmorillonite; dispersing the pretreated montmorillonite in water, adjusting the pH value of the solution to be acidic, and stirring; then adding ferric iron salt, stirring and centrifuging; dispersing precipitates obtained by centrifugation into a ferric iron salt solution, stirring and centrifuging; repeating the steps of dispersing the precipitate obtained by centrifugation into the ferric iron salt solution, stirring and centrifuging; and washing the precipitate obtained by the last centrifugation, and then freeze-drying to obtain the iron modified montmorillonite. The iron-modified montmorillonite can effectively degrade the triazine herbicide simazine, is simple to prepare, wide in raw material source and low in price, and has important significance in removal of refractory pollutant triazine herbicides.

The invention discloses a near-infrared light response ultrathin nanosheet sulfur-doped BiOCl photocatalyst as well as a preparation method and application thereof, and belongs to the technical field of photocatalytic materials. The preparation method comprises the following technical steps: (1) preparing a BiOCl nanosheet; and (2) preparing the sulfur-doped BiOCl nanosheet. By adopting a secondary hydrothermal method and controlling the dosage of thioacetamide and BiOCl nanosheets, the prepared catalyst is an ultrathin nanosheet with uniform morphology, the average size is 70-120nm, the catalyst has light response in a near-infrared light region of 780-1200nm, the light absorption capacity of the catalyst is better, and near-infrared light response can be achieved. The catalyst is applied to catalytic degradation of ENR, the ENR degradation rate under visible light is 66.87%, and the degradation effect is good; under near-infrared light, the ENR degradation rate is 9.25%, and the degradation performance from zero to existence is achieved. The preparation method disclosed by the invention is simple, mild in condition, easy to control, low in raw material consumption, free of complex operations such as centrifugation, low in preparation cost and easy to popularize and apply.

The invention relates to a Prussella sp. And application thereof, and belongs to the technical field of microorganisms. The method comprises the following steps: firstly, screening and separating a strain of Plesteria sp. RL-1 from intestinal tracts of worker termites of saw termites, and preserving the Plesteria sp. RL-1 in China General Microbiological Culture Collection Center (CGMCC) with the preservation number of CGMCC No.32481; the Prussella reevesii RL-1 can grow on an inorganic salt culture medium with alkali lignin as a unique carbon source, and has the capacity of degrading alkali lignin and decolorizing dye; experiments prove that the Princisteria RL-1 can rapidly and efficiently degrade alkali lignin, the degradation rate reaches up to 88% or above, the Princisteria RL-1 can adapt to wide temperature and pH ranges and can directly degrade crop straw such as rice straw, obtained metabolites can promote plant growth, and the Princisteria RL-1 can be applied to resource application of agricultural waste and has a wide application prospect. And wastewater treatment in industries such as papermaking and printing and dyeing.

The invention discloses a Co-MOF / TiO2 heterojunction-based photocatalysis-PMS activation catalyst and a preparation method and application thereof, specifically, TiO2 nanosheets and porphyrin-based MOF are coupled to construct a Co-MOF / TiO2 heterojunction hybrid material, and the material has the performance of synergistic photocatalysis of peroxymonosulfate activation and is used for catalyzing degradation-resistant bisphenol A, PMS, PMS, PMS, PMS, PMS and PMS. The compound is an effective synergistic photocatalyst and has many advantages that (i) the porous structure of the metal organic framework promotes mass transfer in the catalytic process, so that the catalytic process is further promoted; (ii) a chromophore at the center of a porphyrin structure can enhance the light capturing ability of the metal organic framework (under visible light, photoinduced electrons can be continuously migrated to adsorbed PMS to promote the activation process of the PMS); and (iii) the heterojunction formed between the TiO2 and the Co-porphyrin ligand further promotes the separation of photon-generated carriers.

The invention relates to the technical field of coal wastewater treatment, in particular to an intelligent monitoring method for HPAM microbial degradation for coal slime water treatment. The method comprises the steps that index data in coal slime water are collected and preprocessed in real time, the preprocessed index data are intelligently processed and analyzed through a hybrid dynamics model and an adaptive optimization algorithm, and an analysis result is obtained; according to an analysis result, automatically adjusting reaction conditions and operation parameters through a multi-dimensional time sequence feedback and nonlinear adaptive learning algorithm; meanwhile, detecting the degradation process to obtain detection data; and performing anomaly analysis based on the detection data to obtain an anomaly analysis result, and performing anomaly diagnosis and alarm according to the anomaly analysis result. The problems that in the coal slime water treatment process, the analysis accuracy of the microbiological degradation process is low, and the self-adaptability is poor are solved.

The invention discloses an electrochemical-catalyst dual-activated reactor for efficiently degrading azo dye by persulfate, which comprises: a reactor main body comprising a pretreatment chamber, a main reaction chamber and a post-treatment chamber which are mounted from bottom to top; the electrochemical unit comprises an anode, a cathode and a direct-current stabilized power supply, and the two ends of the direct-current stabilized power supply are electrochemically connected with the anode and the cathode; the catalyst unit is mounted at the bottom of the main reaction chamber; the liquid conveying system is used for sequentially conveying wastewater and a persulfate solution to the pretreatment chamber, the main reaction chamber and the post-treatment chamber, and the wastewater and the persulfate solution circularly flow in the chambers to finish pretreatment, degradation treatment and post-treatment; and the gas spraying system is used for uniformly inputting gas into the main reaction chamber. The reactor combines a dual activation mechanism of electrochemistry and a catalyst, generates active species with strong oxidizing property, remarkably improves the degradation effect of azo dyes, and has the advantages of high efficiency, simplicity and convenience in operation, wide applicability and the like.

The invention relates to the technical field of wastewater treatment, in particular to a reaction device for chemical organic matter degradation, the reaction device for chemical organic matter degradation comprises a shell mechanism, a driving mechanism, two stirring mechanisms, an auxiliary mechanism and a cleaning mechanism, the shell mechanism comprises two supporting columns, a heating shell and a reaction shell, the two supporting columns are installed on the ground at intervals, the heating shell is fixedly installed between the two supporting columns, the reaction shell is installed in the heating shell, the stirring mechanism is driven by the driving mechanism to stir mixed liquid in the reaction cavity, the contact and mixing effects between organic matter liquid and a degradation agent are improved, and therefore the mixing efficiency is improved; the cleaning mechanism can be used for cleaning the gas outlet of the gas guide auxiliary assembly, so that the blockage condition is prevented, the auxiliary gas can be ensured to smoothly enter the reaction cavity, and the normal reaction is ensured.

The invention discloses a method for degrading organic pollutants in a water body by using modified goethite reinforced ferrate, the method comprises the following steps: adding modified goethite into a degradation system constructed by ferrate to degrade the organic pollutants in the water body, and the modified goethite is prepared by calcining metal-doped goethite as a raw material. The doped metal in the metal-doped goethite is cobalt and / or copper. According to the method, the ferrate is activated by the modified goethite with rich oxygen vacancies and surface activity Fe (II) sites, so that the ferrate can be promoted to quickly generate a large number of strong-activity species, a catalytic degradation system taking high-valence metal as a main component is constructed, and organic pollutants can be efficiently degraded under the condition that the dosage of the ferrate is less; the method can realize efficient removal of various organic pollutants in water, has the advantages of strong degradation selectivity, high degradation efficiency, good removal effect, less catalyst and oxidant dosage, no secondary pollution and the like, and has high use value and good application prospect.

The invention discloses a petroleum and petrochemical wastewater treatment system, which relates to the technical field of wastewater treatment and comprises an exclusive strain in-situ production device, a compact sludge separation device and a strain sludge loading device, a plurality of sludge cyclone pipes are arranged in the dense sludge separation device, and a sludge inlet, a light sludge outlet and a dense sludge outlet are formed in the dense sludge separation device; the strain sludge loading device is provided with an inlet and an outlet, and the inlet is respectively connected with a strain outlet and a compact sludge outlet of the exclusive strain in-situ production device through a strain conveying pipeline and a compact sludge conveying pipeline; and the system is arranged between sludge return pipes of the sedimentation tank and the biochemical tank. According to the invention, continuous propagation supply is carried out on domesticated specific exclusive strains, full agglomeration and mixing of the domesticated specific exclusive strains and dense sludge subjected to cyclone separation are ensured, the survival rate of the strains is ensured, and the degradation efficiency of pollutants is enhanced. Meanwhile, the improvement of sludge granularity and the enhancement of activity are promoted, the biological stability of microorganisms in a biochemical pool is enhanced, a mutualistic symbiotic virtuous cycle is formed, and the wastewater treatment efficiency is improved.

The invention discloses heteropolyacid-assisted ball-milling modified micron zero-valent iron particles as well as a preparation method and an application of the heteropolyacid-assisted ball-milling modified micron zero-valent iron particles. The micron zero-valent iron particles are mainly prepared by mixing micron zero-valent iron, heteropoly acid and a cheap precious metal compound. According to the specific preparation method, micron zero-valent iron, heteropoly acid and a precious metal compound are placed in a ball milling tank and in a specific atmosphere to be subjected to ball milling modification, and the heteropoly acid modified ultra-low-amount ruthenium loaded micron zero-valent iron particles are obtained. The particle provided by the invention has extremely strong reaction performance on chlorinated hydrocarbon, does not generate performance degradation after being cycled for more than 30 times, can realize complete dechlorination on low-concentration and high-concentration chlorinated hydrocarbon, and has extremely high water treatment application value.

The invention provides a bio-organic fertilizer preparation process based on a microbial fermentation technology, and relates to the technical field of organic fertilizer preparation, the process comprises the following steps: S1, raw material preparation: selecting different types of animal and plant wastes as organic raw materials, and pre-treating to adjust the physical properties of the organic raw materials so as to facilitate subsequent fermentation; s2, proportioning and adjusting: adjusting the carbon nitrogen ratio of the raw materials according to the characteristics of the raw materials, in the invention, through reasonable pretreatment of the raw materials and accurate adjustment of the carbon nitrogen ratio, the fermentation environment is improved, the degradation efficiency of microorganisms on organic matters is significantly improved, in the pretreatment step, by adjusting the physical properties of the raw materials, the contact area of the microorganisms and the organic matters is increased, and the degradation efficiency of the microorganisms on the organic matters is improved; the carbon-nitrogen ratio control during proportioning enables microorganisms to perform metabolic reaction more efficiently, the problem of nutrition imbalance in the fermentation process is reduced, the stability of the fermentation process is ensured by the optimization, and the overall quality of the organic fertilizer is improved.

The invention discloses an SF6 waste gas discharge degradation device and method, and the device comprises a gas pump which can manually regulate and control the gas flow rate in each gas path; the gas mixing mechanism is arranged at one end of the gas pump and is used for mixing the background gas in the mechanism with SF6; the reaction mechanism comprises an air inlet wheel cylinder and a reactor arranged on one side of the air inlet wheel cylinder; the tail gas degradation mechanism is used for degrading tail gas and preventing secondary pollution; according to the invention, the problems of gas imbalance, reactor leakage, heat dissipation of a reaction device, difficulty in gas inlet during degradation of normal-pressure or negative-pressure waste gas and the like in each reactor in a plasma discharge matrix are solved, the degradation efficiency can be effectively improved, and the safety, the controllability and the economical efficiency of equipment are improved.

The invention relates to a magnetic calcium-iron layered double-metal hydroxide catalyst as well as preparation and application thereof. The catalyst is characterized in that the catalyst is composed of a carrier and layered double hydroxides, the layered double hydroxides are calcium-iron layered double hydroxides, and the carrier is magnetic copper ferrite CuFe2O4; wherein the loading mass percentage of Ca element in the catalyst is 8-16%, and the molar ratio of Ca < 3 + > to Fe < 2 + > is (2-4): 1. Through a specific hydrothermal synthesis method, the catalyst capable of effectively activating PMS to efficiently degrade sulfamethoxazole (SMX) in water is prepared. The preparation process of the catalyst comprises synthesis of copper and iron oxides and subsequent combination of calcium and iron layered double hydroxides, the process not only improves the catalytic efficiency, but also optimizes recovery and recycling of the catalyst through introduction of a magnetic material.

The invention discloses a conjugate of antisense oligonucleotide and polypeptide as well as a preparation method and application of the conjugate, belongs to the technical field of biological medicine, and provides the conjugate of antisense oligonucleotide and polypeptide, the structural general formula of the conjugate of antisense oligonucleotide and polypeptide is as shown in formula (I), O is antisense oligonucleotide, L is a connexon, and P is polypeptide; the antisense oligonucleotide is a nucleotide sequence obtained by modifying thiophosphate and 2 '-O-methyl on the basis of a nucleotide sequence as shown in SEQ ID NO.1 or a nucleotide sequence as shown in SEQ ID NO.2; and the amino acid sequence of the polypeptide is as shown in SEQ ID NO.3. According to the conjugate of the antisense oligonucleotide and the polypeptide, a phosphodiester bond of RNA is catalyzed by the polypeptide P to break, the antisense oligonucleotide O is complementarily paired with a frame-shift element, the polypeptide P is brought to the vicinity of the frame-shift element for targeted cleavage, and a linker L is responsible for coupling, sequence-specific targeted degradation of pathogenic RNA and destruction of the expression condition of RNA in cells.

The invention relates to the technical field of sewage treatment, in particular to a system for efficiently treating livestock and poultry breeding sewage by utilizing algal-bacterial symbiosis, which comprises a solid-liquid separation module arranged on the ground, the solid-liquid separation module comprises a water inlet pipe, a separation box and a filter basket, a nitrification and denitrification tank is arranged on the top of the ground, and a stirring assembly is arranged in the nitrification and denitrification tank; the chemical phosphorus removal module comprises a coagulation, flocculation and sedimentation tank and a stirring assembly, the coagulation, flocculation and sedimentation tank is arranged on the ground, and the stirring assembly is arranged in a coagulation and flocculation area in the coagulation, flocculation and sedimentation tank; according to the system for efficiently treating the livestock and poultry breeding sewage by utilizing the bacterial-algae symbiosis, compared with an existing method for removing the total nitrogen content in the sewage by independently utilizing microorganisms, pollutants in the sewage are synergistically removed in the oxidation pond by utilizing a bacterial-algae symbiosis structure, microalgae and bacteria, so that the energy consumption and the carbon source are saved, and the environmental pollution is reduced. Meanwhile, the sewage treatment effect is improved.

The invention relates to the technical field of sewage treatment, and discloses a subsurface wetland system and a method for relieving wetland blockage. According to the subsurface wetland system provided by the invention, the wetland unit blockage monitoring system is additionally arranged, and the water inlet and outlet operation conditions of the blockage unit are automatically controlled, so that when the blockage unit operates at a low position, the degradation of organic matters among fillers is accelerated, the endogenous respiration of microorganisms is promoted to consume extracellular polymers or intracellular components, and blockages are dispersed when the water level rises; oxygen exchange and circulation of nutrient substances in the wetland are facilitated, a better environment is provided for growth of microorganisms, the activity of the microorganisms is conveniently improved, the purification capacity of the wetland is correspondingly enhanced, and pollutants in water can be better removed; blockages are dispersed by water flow, so that the wetland can be prevented from being degraded due to blockage, and the ecological health and sustainability of the wetland are kept; and as the wetland blockage is relieved, the service life of the wetland filler is prolonged, and the requirement of manual cleaning can be reduced to a certain extent, so that the maintenance cost is reduced.