1090 results about "Hydroxyl radical" patented technology

The invention discloses a nano system for tumor radioimmunotherapy and a preparation method and application thereof, and belongs to the technical field of biological medicines.The system modifies bacteria outer membrane vesicles (OMVs) through engineering to enable the bacteria outer membrane vesicles to carry magnetite nanoparticles (Fe3O4NPs) and an ATR inhibitor VE822, the Fenton reaction activity of the Fe3O4NPs and the synergistic effect of the ATR inhibitor for inhibiting DNA damage repair are utilized, and the tumor radioimmunotherapy effect is improved. DNA damage is amplified, DNA damage reaction (DDR) is inhibited, generation of hydroxyl radicals (. OH) under radiation is enhanced, radiation resistance of tumor cells is reduced, immune reaction is reactivated, infiltration of effector T cells to tumors is improved, growth of mice tumors is remarkably inhibited, and an effective strategy is provided for tumor radioimmunotherapy.

The invention provides lepidolite flotation wastewater treatment equipment and a flotation process, and relates to the technical field of wastewater treatment, the lepidolite flotation wastewater treatment equipment comprises a reaction tank, a stirring mechanism, a swing dosing mechanism and a spraying mechanism; the stirring mechanism comprises a mounting frame fixedly arranged at the top of the reaction tank, and a rotating shaft is vertically and rotatably connected to the inner side of the mounting frame. According to the scheme, a ferrous sulfate solution is finally added into the reaction tank through the spraying mechanism, then a diluted H2O2 solution is intermittently fed through the swing medicine feeding mechanism, the H2O2 solution generates strong oxidizing hydroxyl free radicals under the catalysis of the ferrous sulfate solution, and therefore hydrophobic chains and polar groups of residual medicine are destroyed, and the medicine is obtained. The lepidolite metallurgical flotation wastewater is degraded into small molecular organic matters or mineralized into CO2 and H2O, so that the phenomenon that the subsequent coagulating sedimentation or adsorption process is hindered by residual chemicals is avoided, the chemical oxygen demand and toxicity of the wastewater are reduced, the subsequent biological treatment on the wastewater is facilitated, and the treatment effect and efficiency of the lepidolite metallurgical flotation wastewater are effectively improved.

The invention discloses an aerobic granular sludge culture method based on a micro-nano aeration technology, and belongs to the technical field of water treatment. According to the invention, micro-nano aeration is used, so that the oxygen transfer rate in the aerobic granular sludge reactor is 2.1 times of that of a conventional aeration group, the generated hydroxyl radicals are 2.6 times of that of the conventional aeration group, the final removal efficiencies of ammonia nitrogen, total nitrogen and COD (Chemical Oxygen Demand) can respectively reach 98%, 85% and 97%, the denitrification performance is excellent, the treatment period is shortened by 1 hour, and the treatment cost is reduced. After the aeration time is shortened, 28% of aeration energy consumption is saved. Micro-nano aeration not only is beneficial to culture and domestication of aerobic granular sludge and promotes removal of pollutants, but also improves the energy utilization efficiency.

The invention discloses a preparation method of magnesium threonate. The preparation method comprises the following steps: S1, preparing a stable glucose-magnesium six-membered ring compound; s2, concentrating the reaction liquid, crystallizing, and drying in vacuum to obtain a glucose-magnesium six-membered ring compound; s3, dissolving the compound in water, and adding Fe < 2 + > to adjust the pH value to 2.5-3.0; s4, the solution obtained in S3 is heated, H2O2 is dropwise added, Fe < 2 + > in the solution catalyzes H2O2 to generate hydroxyl radicals, the glucose-magnesium compound is selectively cracked, and magnesium threonate is generated; s5, adding Na2S2O3 to terminate the reaction, and filtering to remove Fe (OH) 3 precipitate; concentrating the filtrate under reduced pressure until the filtrate is sticky, standing at low temperature, and separating out a magnesium threonate crude product; according to the method, the glucose-magnesium six-membered ring compound is used as a raw material and is converted into magnesium threonate through Fenton reaction oxidative cracking, and the purified magnesium threonate is high in purity, low in Fe residue, mild in process condition and suitable for large-scale production.

The invention provides an electrochemical active oxygen supply device for a washing machine and a preparation method. The device comprises a shell, a single closed reaction chamber is formed in the shell, a bifunctional anode electrode and a bifunctional cathode electrode are integrated in the reaction chamber, and a compact and uniform reaction area is formed between the anode electrode and the cathode electrode. When water flows through the reaction area, hydrogen peroxide (H2O2) and / or hydroxyl radicals (OH) are / is electrochemically generated on the surface in situ by accurately adjusting the electrode potential of the difunctional anode, so that instant generation and instant utilization of active oxygen are realized. The active oxygen directly enters a washing system of the washing machine along with water flow, bacteria, viruses and fungi can be efficiently inactivated under the normal-temperature or low-temperature washing condition without additionally adding chemical disinfectants, organic stains and peculiar smell molecules are synchronously degraded, and green, efficient and intelligent healthy washing is achieved.

The invention discloses an antistatic PPO material based on graphene and a preparation method thereof.The preparation method comprises the steps that aminated polyphenyl ether and modified filler react to prepare modified polyphenyl ether, the modified polyphenyl ether is treated with benzenesulfonyl chloride to prepare the antistatic PPO material, when the aminated polyphenyl ether and the modified filler are used, the modified filler is equivalent to a cross-linking agent, and when the modified filler is used for modifying the aminated polyphenyl ether, the modified filler is equivalent to a cross-linking agent; the modified filler is interspersed among the molecular chain segments, graphene is arranged in the modified filler and has a very good conductive effect, so that the material has an antistatic effect, and the surface of the modified filler contains an organic silicon chain segment, so that the antistatic property of the material is improved; when the material is combusted, a phosphorus-containing organic silicon chain segment on the surface of the modified filler can form a P-O-Si compact carbon layer, a nitrogen element on a side chain can generate amino free radicals, then active hydrogen atoms and hydroxyl free radicals are captured, a combustion chain reaction is interrupted, a sulfur element can release sulfur dioxide gas, the oxygen concentration is further diluted, and the oxygen concentration is reduced. Therefore, the material has a good flame-retardant effect.

The present invention relates to magnetic, catalytically active, and radiosensitizing nanoparticles (NanoXcats) and the method for their production. A method is disclosed for the production of functionalized greigite nanoparticles with a narrowband size distribution (10-30 nm) for use in multimodal cancer therapy. NanoXcats are superparamagnetic Fe3S4 nanoparticles whose surfaces are equipped with polar functional groups. The surface structures of NanoXcats are suitable for conjugation with, or for covalent or electrostatic binding of, active substances, which may be cancer drugs, cell growth inhibitors, or NO donors. Due to the EPR effect, NanoXcats are preferentially internalized by tumor cells. The targeted accumulation of NanoXcats in tumor tissue is achieved by an external inhomogeneous magnetic field. NanoXcats exhibit enhanced catalytic activity in tumor cells.The catalytic activity of intracellular NanoXcats can be triggered, controlled, and enhanced by low-dose X-rays. Surface-bound drugs are additionally activated in tumor cells by the catalytic activity of NanoXcats. NanoXcats act as superoxide dismutase, nitric oxide synthase, and Fenton catalyst. They catalyze, for example, reactions of the superoxide anion radical to hydrogen peroxide, of L-arginine to NO, and of hydrogen peroxide to the hydroxyl radical.

The invention discloses a drug-loaded liposome nano-particle, a preparation method thereof and application of the drug-loaded liposome nano-particle in treatment of brain glioma, and belongs to the technical field of biological nano-medicines. The invention provides a novel copper phthalocyanine derivative and catalase co-loaded lipidosome nanoparticle and application of the novel copper phthalocyanine derivative and catalase co-loaded lipidosome nanoparticle to treatment of brain glioma on the cellular level. The nano-particles are obtained by wrapping copper phthalocyanine derivatives and catalase with lipidosome prepared by a microfluidic method. The co-drug-loaded liposome can catalyze excessive H2O2 in brain glioma to generate oxygen, and O2 is continuously supplied to photodynamic therapy (PDT) to generate active oxygen; meanwhile, Cu < 2 + > can deplete glutathione and improve the oxidative stress level in the glioma, the reduction product Cu < + > can convert H2O2 into hydroxyl radicals with higher toxicity through a Fenton-like reaction, oxidative stress injury is doubly amplified, cascade cooperation of PDT and chemical dynamic therapy (CDT) is achieved, and the treatment effect on the glioma is remarkably enhanced.

The utility model discloses a water treatment device adopting an ozone micro-nano bubble coupling electrochemical oxidation process. The water treatment device comprises an ozone generating device, a micro-nano bubble generating device, a BDD (Boron Drain Discharge) electrode unit and an air flotation filter tank device, the device has the following beneficial effects: (1) the Venturi jet device is adopted to release ozone micro-nano bubbles, so that wastewater and the micro-nano bubbles are fully stirred and mixed and are fully contacted with the BDD electrode for oxidative degradation, and the impact force formed by jet flow can wash the BDD electrode plate, so that the BDD electrode plate is prevented from being easily blocked; (2) an ozone micro-nano bubble technology and a BDD electrode technology are coupled to generate a synergistic effect, a large number of hydroxyl radicals are generated, the oxidation capacity is enhanced, the organic matter removal capacity is improved, and the sterilization, decoloration and deodorization capacities of the device on raw water are enhanced. And (3) the BDD is combined with an air flotation process, so that the occupied area is reduced, and the layout is optimized. And (4) fine particles in the water body are further removed by the air floatation superposition filter tank, and the concentration of suspended particulate matters is reduced.

The invention belongs to the technical field of environmental engineering, and particularly relates to a method for enhancing the reaction efficiency of a Fenton-like fluidized bed through intelligent magnetic control. Specifically, customized composite magnetic particles are placed in a columnar Fenton-like fluidized bed reactor with an electromagnetic coil array distributed on the periphery, percarbonate activated by iron and aluminum phosphate is used as an oxidizing agent, and magnetic fields with different directions and intensities are applied to the magnetic particles by utilizing the electromagnetic coil array; the magnetic particles guide the fluid to form a required flowing form, and the fluid flowing path and the mixing process are highly accurately controlled, so that the aims of fully mixing the composite magnetic particles with the percarbonate ions, efficiently generating secondary oxidants such as hydroxyl free radicals, carbonate free radicals and superoxide anion free radicals and efficiently degrading pollutants are fulfilled.

The invention discloses an aeration type water treatment device for catalytic degradation of pollutants based on triboelectrification, and belongs to the field of sewage and wastewater treatment. The lower portion is of a hollow cone structure, and the upper portion is of a cylinder structure. Positive and negative friction particles with spherical structures are placed in the device, the built-in rotatable aeration device can rotate and uniformly distribute gas under the action of gas flow, a gas-liquid-solid three-phase vortex flow is formed in combination with the rotation action of the stirring paddle, the friction particles generate high-frequency collision to generate an electrification effect, and the gas-liquid-solid three-phase vortex flow is formed. Hydroxyl free radicals (. OH) and superoxide free radicals (. O2-) are generated, and organic pollutants are efficiently degraded. The externally added magnetic field can inhibit electron-hole recombination. The device can realize innocent treatment of toxic and harmful wastewater, and has better practical and economic values.

The invention discloses a membrane pore aeration ozone heterogeneous catalytic reactor and a water treatment system, and relates to the technical field of water treatment. The reactor comprises a reactor cavity, the top of the reactor cavity is provided with a water outlet assembly, and the bottom is provided with a water inlet assembly and a gas inlet assembly; the membrane component is arranged in the reactor cavity and comprises a bundle of hollow fiber membrane filaments which are bent in a U shape; the two ends of the hollow fiber membrane filaments are bundled and fixed in a mounting hard tube, the mounting hard tube is detachably connected with the air inlet assembly, and the air inlet assembly is used for communicating an external air supply device with the hollow fiber membrane filaments; micropores are distributed in the surfaces of the hollow fiber membrane filaments; and the reactor cavity is filled with catalyst particles. According to the membrane pore aeration ozone heterogeneous catalytic reactor provided by the invention, the ozone mass transfer efficiency and the utilization rate are improved, and the content of hydroxyl radicals used for degrading organic matters in water is increased, so that the organic matters which are difficult to degrade in water can be more effectively removed, and the ozone treatment operation cost is reduced.

The invention provides an efficient chloramphenicol degradation method based on Co-Cu-carbon composite nano-catalyst activated peroxymonosulfate, which comprises the following steps: regulating the Co / Cu molar ratio in a bimetal organic framework precursor, and performing pyrolysis to prepare the Co-Cu-carbon composite catalyst with an optimized pore structure, graphitization degree and metal dispersity; peroxymonosulfate is activated by utilizing the synergistic effect of Co / Co and Cu / Cu redox pairs to generate sulfate free radicals, hydroxyl free radicals, singlet oxygen and superoxide free radicals, and direct oxidative degradation of chloramphenicol is promoted by taking a catalyst as an electron transfer bridge; the method realizes rapid and efficient removal of chloramphenicol, high mineralization rate, excellent cycle stability and strong anti-interference capability, and solves the technical problems of low removal efficiency, high cost and easy secondary pollution in the prior art.

The invention provides a Fenton technology coupled microbial fuel cell, a preparation method and application, and relates to the field of environment, materials and energy, the specific technical scheme is as follows: the Fenton technology coupled microbial fuel cell comprises an anode, a cathode and a catholyte, and is characterized in that the anode is a biological anode, the cathode is an air cathode, and the air cathode is an air cathode; the air cathode comprises an oxygen reduction electrocatalyst and a cathode substrate I, the oxygen reduction electrocatalyst is attached to the cathode substrate I, and the catholyte is common industrial and domestic wastewater. The electro-Fenton technology is introduced into the air cathode of the microbial fuel cell, the cathode fully utilizes electrons generated by metabolism of a biological anode to carry out an oxygen reduction process in the presence of air, so that hydrogen peroxide is generated in situ and is activated into active species such as hydroxyl free radicals through a Fenton catalyst, and the hydrogen peroxide is converted into hydrogen peroxide. Therefore, the purpose of degrading complex pollutants with low energy consumption is achieved.

The invention discloses a mining gas extraction conveying device which comprises at least one protective sleeve used for conveying gas, an extraction pump used for extracting gas and a conveying pipe located in the protective sleeve, and the protective sleeves are fixedly connected through a fixing sleeve in an airtight embedded mode. A first butt joint sleeve in airtight connection with the conveying pipe is fixedly installed in the middle of the fixing sleeve. The inner wall of the protective sleeve is coated with the manganese dioxide coating, ozone is filled in cooperation with the one-way gas pipe, when gas leaks to the protective sleeve in the conveying pipe, the ozone generates hydroxyl free radicals under catalysis of manganese dioxide, the hydroxyl free radicals and methane are subjected to an oxidation reaction, and the hydroxyl free radicals are decomposed into carbon dioxide and water, so that the explosion risk is reduced while the gas concentration is reduced; leaked gas is actively treated by utilizing a chemical catalysis principle, decomposition can be carried out when the gas leaks, the safety of the device is effectively improved, meanwhile, generated water prompts the leakage position through a dyeing patch of a drainage pipe, and timely maintenance is facilitated.

The invention discloses a method for accelerating straw composting by utilizing magnetite and compound microorganisms to drive biological advanced oxidation, and belongs to the technical field of efficient composting of agricultural organic solid wastes. The method comprises the following steps: (1) uniformly mixing straws and excrement as a compost body, adjusting the C / N ratio and the water content, adding magnetite, a bacillus subtilis liquid and a crushed white rot fungus liquid, and putting the mixture into a composting device; (2) intermittent aeration is carried out, the temperature is 28-32 DEG C, and the composting period is 40-50 days. According to the composting method, through intermittent aeration, controllable aerobic conditions and anoxic conditions are formed in a compost body, under the anoxic conditions, ferric iron is subjected to dissimilatory iron reduction to generate ferrous iron, and under the aerobic conditions, compound microorganisms reduce oxygen through extracellular electron transfer to form hydrogen peroxide, so that the composting effect is improved. Divalent iron and hydrogen peroxide are subjected to a Fenton-like reaction to generate hydroxyl free radicals with high oxidizing property, so that decomposition of straw lignocellulose is accelerated, and the composting efficiency of compost is improved.

The invention belongs to the technical field of extraction and purification of plant components, and relates to a low-temperature freezing vacuum drying nano processing method for extracting anthocyanin from purple corn, in particular to a method for extracting anthocyanin from corn kernels, cores, straws, roots and stigmas of purple corn. The processing method comprises the steps of pretreatment, concentration, hydroxyl radical treatment, quick freezing, nano crushing and the like. A hydroxyl radical treatment method is adopted, so that harmful substances such as pesticide residues can be efficiently, quickly and thoroughly removed; the effect of extracting the anthocyanin from corn kernels, roots, cores, stems and stigma of purple corn by adopting a low-temperature freezing vacuum drying technology is remarkable, the purification rate is high, and the anthocyanin containing 99% of biological activity is achieved. The nanoscale anthocyanin is processed by adopting jet mill equipment and can be conveniently absorbed by a human body and widely applied to various fields.

The electro-catalytic oxidation treatment device comprises an electro-catalytic box, a plurality of water pipe connectors are arranged at one length end of the electro-catalytic box, a supporting plate is arranged at the bottom in the electro-catalytic box, a plurality of polar plate groups are arranged on the upper portion of the supporting plate in the length direction, and insulating bars penetrate through the polar plate groups; the polar plate group comprises two cathode plates and an anode plate, the anode plate is positioned in a gap between the two cathode plates and is parallel to the two cathode plates, the bottoms of the anode plate and the two cathode plates are fixedly connected, and the anode plate and the cathode plate are L-shaped and form the right-angle U-shaped polar plate group; the upper ends of the anode plates and the cathode plates are fixedly connected with metal rods, the metal rods penetrate out of the side walls of the adjacent electro-catalysis boxes, and electric connectors are arranged at the outer ends of the metal rods. According to the electrocatalytic oxidation treatment device for the landfill leachate, the generation amount of oxidants such as hydroxyl radicals is changed by adjusting the current and voltage of the catalytic polar plate, so that pollutants are oxidized and removed. The method has the characteristics of simplicity in operation, low cost, broad spectrum, full quantization and the like.

According to the conductive gel grinding tool provided by the invention, the foamy copper framework is added on the basis of a conventional gel resin grinding tool, and the conductive gel grinding tool is prepared according to specific steps, so that the grinding tool has conductivity; during polishing, the conductive gel grinding tool is connected with the negative electrode of a power source to serve as a cathode, polishing liquid is matched, and an electrolytic reaction can occur in a polishing area on the surface of the grinding tool. Correspondingly, the invention further provides an electro-Fenton catalysis auxiliary polishing method. According to the method, electro-Fenton catalytic auxiliary polishing of the hard and brittle materials is achieved through the conductive gel grinding tool with the specific structure, the polishing efficiency is high, little iron-containing sludge is generated, and environmental pollution is small; generation of hydroxyl free radicals in a polishing solution in a machining area is controlled through the electro-Fenton effect, oxidation of the surface of a workpiece is achieved, then an oxidation layer on the surface of the workpiece is mechanically removed through a conductive gel grinding tool, the workpiece and the grinding tool do not need to be soaked in an electrolytic solution for polishing, the electro-Fenton auxiliary polishing device and the operation process are simplified, and the practical value is high.

The invention relates to a method for selectively leaching and regenerating a positive electrode material from a waste lithium ion battery, and belongs to the technical field of lithium ion batteries. The method comprises the following steps: discharging, disassembling, crushing, calcining and screening the waste lithium ion battery, adding an obtained positive active material into an oxalic acid solution, and stirring and reacting at 60-80 DEG C under the irradiation of an ultraviolet lamp to obtain a leaching solution rich in metal elements and leaching residue iron phosphate; adding sodium carbonate into the leachate for reaction to obtain lithium carbonate; and ball-milling and mixing iron phosphate, lithium carbonate and a carbon source, drying and calcining to obtain the regenerated lithium iron phosphate positive electrode material. The oxalic acid system is catalyzed by ultraviolet light to generate hydroxyl free radicals with strong oxidizing property, so that the leaching efficiency of lithium is remarkably improved, and the dissolution of iron is inhibited, thereby realizing the efficient separation of lithium and iron. The leaching residue is high-purity iron phosphate, lithium in the leaching solution is recycled in the form of lithium carbonate, and the leaching residue and the lithium carbonate can be directly used for regenerating the lithium iron phosphate positive electrode material as precursors, so that the technological process is greatly simplified, and the production cost is reduced.

The embodiment of the invention relates to a wastewater treatment method, device and system based on ozone and hydrogen peroxide, and the method comprises the following steps: pre-treating received wastewater to be treated, and introducing hydrogen peroxide and ozone into the wastewater to be treated to obtain a first intermediate mixture; first mixing and second mixing are carried out on the first intermediate mixture, the mixed first intermediate mixture is introduced into the reactor for full reaction, a first reaction product is obtained, and the first reaction product at least comprises first reaction liquid; and discharging the first reaction liquid contained in the first reaction product in response to the condition that the first reaction liquid meets the wastewater discharge requirement. According to the embodiment of the invention, the wastewater to be treated can be fully mixed and reacted with the hydrogen peroxide and the ozone introduced into the wastewater, so that the utilization rate of the hydrogen peroxide and the ozone is improved, and meanwhile, the generation and utilization rate of hydroxyl radicals is also improved.

The invention provides a monatomic cobalt-doped graphite phase carbon nitride modified carbon electrode and a preparation method and application thereof, and belongs to the technical field. The prepared monatomic cobalt-doped graphite phase carbon nitride modified carbon electrode comprises a carbon electrode substrate and a cobalt-doped graphite phase carbon nitride catalytic layer. The oxygen-containing functional group of the carbon electrode and monatomic cobalt synergistically regulate and control the selectivity and activity of two-electron oxygen reduction, so that hydrogen peroxide is efficiently and stably generated by electro-catalyzing oxygen. The carbon electrode is applied to an electro-catalytic ozonation technology, H2O2 generated in situ reacts with ozone to generate hydroxyl radicals (OH), and monatomic cobalt and carbon nitride can also directly act on the ozone to generate OH, so that removal of new pollutants difficult to degrade is remarkably enhanced, and a theoretical basis and a technical support can be provided for remediation of the pollutants.

The invention discloses a method for degrading benzene series in wastewater and inhibiting generation of bromate by electrically activating persulfate. The method is suitable for treatment of bromine-containing water. According to the method, a persulfate electrochemical activation technology is adopted, the current density and the persulfate concentration are controlled, sulfate free radicals (SO4 <.->) and hydroxyl free radicals (HO <.->) generated by an electro-activated persulfate system can effectively degrade benzene series, and meanwhile, effective inhibition on generation of bromate is realized by utilizing a cathode reduction effect; meanwhile, organic pollutants in the water body are efficiently removed. The technology does not need additional reducing agents, is green and environment-friendly, and is suitable for drinking water and industrial wastewater treatment.

The invention discloses a method for degrading organic pollutants by utilizing self-decomposition reaction of decoupling peroxide, which is used for efficiently activating hydrogen peroxide through an electrochemical process to realize efficient degradation of the organic pollutants in water. The method is based on an electrolysis system, and an anode and a cathode have a synergistic effect: the anode is subjected to a hydrogen peroxide oxidation reaction, and superoxide free radicals (. O2 <->) and singlet oxygen (1O2) are generated in the process of electrooxidizing hydrogen peroxide to generate oxygen; the cathode is subjected to hydrogen peroxide reduction reaction, and hydroxyl radicals (. OH) are generated in the process of electrically reducing hydrogen peroxide to generate water. Under the driving of an external power supply, the method decouples a hydrogen peroxide self-decomposition path, promotes hydrogen peroxide to generate reactive oxygen species (ROS) with strong oxidizing property and non-selectivity through an electrochemical reaction path, and further efficiently degrades organic pollutants. The method has the advantages of low energy consumption, environmental friendliness, sensitive operation and high degradation efficiency.

The invention provides an electrochemical active oxygen supply device for a drum of a washing machine and the washing machine. The device serves as a functional inner component, is tightly attached to the inner wall of an outer barrel of the washing machine or in a barrel gap, does not need to be connected with an external water path, achieves high integration with the roller, and reduces occupation of the effective washing volume of the roller to the maximum extent. A first shell and a second shell are combined to form a reaction space, and a difunctional anode electrode and a difunctional cathode electrode are integrated in the reaction space and are electrically connected with a positive electrode and a negative electrode of an external power supply respectively to form a complete electrochemical loop. When water flow naturally flows through the reaction space in the washing process, a specific working potential is applied to the difunctional anode electrode under constant potential control, so that hydrogen peroxide (H2O2) and / or hydroxyl radicals (OH) are / is generated on the surface of the difunctional anode electrode in an in-situ electrochemical mode.

The invention discloses a strain of Blastococcus atamensis YC-1 and application of the strain of Blastococcus atamensis YC-1, and belongs to the field of microbial strains. The streptococcus sp. YC-1 provided by the invention has high antioxidant activity and also has the capability of producing DHHB (docosahexaenoic acid); meanwhile, the YC-1FLE is prepared by adopting absolute ethyl alcohol as a solvent, has no toxicity to HaCaT cells, is relatively high in reducing capacity, has a scavenging effect on DPPH free radicals, ABTS cation free radicals and hydroxyl free radicals, has a tyrosinase inhibition effect and shows good antioxidant and whitening effects; when the YC-1FLE is applied to the sunscreen lotion, the sunscreen coefficient of the sunscreen lotion containing the YC-1FLE is obviously higher than that of a blank control group, which shows that the YC-1FLE has better ultraviolet resistance. Therefore, the strain and the lysate extract of the fermentation product of the strain have huge application potential in the field of cosmetics.

The utility model discloses an integrated device for removing hypophosphite in wastewater. The integrated device comprises an oxidation column, a water inlet and a water outlet are formed in the two sides of the oxidation column respectively, the water outlet is connected to a sedimentation tank, an electrode plate is arranged in the sedimentation tank and connected to an external power supply, and a water outlet pipe is arranged on the sedimentation tank; comprising an ozone generator which is connected to an oxidation column through an air inlet pipe, and a concentration detector is arranged on the air inlet pipe. The ozone catalytic oxidation technology is adopted, the aluminum-based catalyst is adopted for catalyzing ozone to generate hydroxyl free radicals, hypophosphite in waste water is oxidized into orthophosphate, meanwhile, organic pollutants can be degraded, finally, ozone is decomposed to generate oxygen, new pollutants are not generated in the reaction, and the technology is a green technology. The pole plate material of the electric flocculation unit adopts an iron plate, iron ions are generated by electrifying and are combined with generated orthophosphate to form precipitate removal, no extra medicament is needed in the technological process, the mud yield is low, and the operation is simple and convenient.

The invention discloses a composite catalyst for a peracetic acid activation system and a preparation method and application thereof, and relates to the technical field of advanced oxidation water treatment. The preparation method of the catalyst comprises the following steps: preparing an aqueous solution of a cobalt source as a precursor solution; adding a manganese source into the precursor solution to obtain a Co-Mn mixed salt solution; adding a complexing agent into the Co-Mn mixed salt solution to form a stable sol system; heating the sol system at constant temperature to obtain wet gel; drying the wet gel to obtain a porous dry gel precursor; calcining the porous xerogel precursor, and then cooling and grinding to obtain the composite catalyst for the peracetic acid activation system. The composite structure in the catalyst greatly improves the rate of generating hydroxyl radicals and organic oxygen radicals by decomposing peracetic acid by promoting electron transfer circulation of a metal active center, shows good structural stability and recyclability, and is especially suitable for degradation of an organic pollutant sulfamethoxazole in a water body.

The invention discloses a lactobacillus plantarum YM-7, the preservation number of the lactobacillus plantarum YM-7 in Guangdong Microbial Culture Collection Center is GDMCC No: 65465, and the lactobacillus plantarum YM-7 obtained from fermented food is high in safety, has an inhibition effect on staphylococcus aureus, escherichia coli and candida albicans, and can be used for preparing a food additive. The strain TN-7 has the effect of removing DPPH, hydroxyl free radicals and superoxide anion free radicals, so that the strain TN-7 can be used as a food additive, and a new way is provided for development of antioxidant and antibacterial food additives.

The invention discloses a bacterium-enzyme mixed preparation for PET plastic degradation and a preparation method thereof, and belongs to the technical field of enzyme preparations, a lanthanum metal framework is formed, loaded on the surface of titanium dioxide and carbonized to obtain a lanthanum-doped porous carbon layer, and then nitric acid treatment and silane coupling agent treatment are performed to significantly increase the specific surface area and roughness, so that the specific surface area is increased; the calcium-based diatomite is taken as a carrier to form a sodium alginate microcapsule taking an enzyme preparation as an inclusion, and the sodium alginate microcapsule is loaded on the surface of the calcium-based diatomite, so that the situation that titanium dioxide generates hydroxyl free radicals in photocatalysis to directly attack the enzyme preparation is avoided, and the degradation effect on the PET plastic is prolonged; calcium ions in the calcium-based diatomite can increase the crosslinking degree with the sodium alginate, the load rate of the sodium alginate microcapsule is increased, the strength of the microcapsule is improved, and the slow release effect of an enzyme preparation in the microcapsule is further improved.