2134 results about "Polluted environment" patented technology

The invention discloses a bio-based foam adsorption material as well as a preparation method and adsorption application thereof. The bio-based polymer is used as a foam skeleton, the adsorbent with a large specific surface area is added to further improve the foam adsorption capacity, the cross-linking agent and the reinforcing filler improve the overall strength of the foam, and the bio-based foam adsorption material with the high adsorption capacity is obtained. The bio-based foam disclosed by the invention is light in weight, controllable in hydrophilicity and hydrophobicity, and capable of separating and removing pollutants such as oil and organic dye. The foam has high adsorption capacity and good cyclic adsorption capacity, can be repeatedly used, is biodegradable, does not pollute the environment, can effectively adsorb dangerous chemicals existing in a water body, does not cause secondary pollution, and can be used for decontamination treatment of organic pollutants in industrial wastewater.

The invention relates to the technical field of aging detection, and discloses a xenon lamp simulation environment aging detection method and system for a water-based waterproof material. The method comprises the following steps: testing a water-based waterproof material sample in an aging detection platform and collecting first aging response data; calculating a characteristic spectrum drift parameter combination in combination with the first aging response data, and solving a multi-factor aging dynamics equation set to obtain three-dimensional environment field data; inputting the three-dimensional environment field data into a back propagation neural network to carry out multi-factor environment parameter collaborative optimization to obtain an intelligent control parameter combination; performing test parameter adjustment and detection on the aging detection platform according to the intelligent control parameter combination to obtain second aging response data; and performing spectral attenuation index calculation and aging degree grading based on the second aging response data to obtain an aging state evaluation result of the water-based waterproof material sample. According to the method, multi-dimensional quantitative characterization of the aging state of the water-based waterproof material and scientific prediction of the service life of the water-based waterproof material in an acid pollution environment are realized.

The invention provides an intelligent control method and system for air purification equipment. According to the method, multi-dimensional environment data, including pollutant three-dimensional space data captured by air purification equipment, real-time airflow velocity and concentration distribution, in an open type pollution environment are obtained, a pollutant distribution thermodynamic diagram is generated, and the multi-dimensional data and the thermodynamic diagram are jointly coded to form a pollution concentration gradient map. Meanwhile, a historical control strategy data set is collected, cross-environment matching is carried out on the historical control strategy data set and the atlas, and diversion control characteristics associated with the pollutant diffusion direction are extracted; on the basis of the mapping relation between the characteristics and the atlas, a dynamic flow guide parameter set is determined, an intelligent control instruction of the air purification equipment is finally generated, and directional airflow disturbance and air distribution optimization control over the high-concentration area are achieved. According to the technical scheme, the intelligent control efficiency and precision of the air purification equipment can be improved.

The invention provides solid-waste-based fluid-state solidified soil and a preparation method of the solid-waste-based fluid-state solidified soil. The solid waste-based flow state solidified soil comprises a filling material, a framework material and a reinforcing material, the filling material comprises the following components in parts by weight: 60-95 parts of engineering residue soil, 5-40 parts of alkaline waste residues, 5-30 parts of a cementing material, 1-10 parts of a polymer emulsion, 0.5-3 parts of silica fume, 0.1-1 part of cellulose ether, 0.1-1 part of a compound water reducing agent and 0.5-2 parts of an exciting agent. The framework material comprises waste concrete blocks and / or waste brick blocks; the reinforcing material comprises a waste safety net and / or fiber gridding cloth. The flow-state solidified soil can achieve rapid backfilling in a narrow space, is excellent in shrinkage cracking resistance and impermeability, simple in preparation method and convenient to apply and construct, effectively solves the problems that the flow-state solidified soil is large in shrinkage, prone to cracking and the like, improves the quality of a backfilling project, achieves in-situ resource utilization of construction waste, and reduces the construction cost. And the construction cost of engineering can be reduced, and the problems of land occupation, environment pollution and the like caused by solid waste stacking are reduced.

The invention belongs to the field of metal materials, and particularly relates to high-elongation and high-forming passenger car steel and a production method thereof.The steel plate is mainly suitable for manufacturing passenger car structural parts, the steel comprises the following chemical components of C, Si, Mn, Al, V, Ta, Bi, Sb, Ni, Pt and Y, P is limited to be smaller than or equal to 0.015%, S is limited to be smaller than or equal to 0.005%, N is limited to be smaller than or equal to 0.006%, and the balance Fe and inevitable impurities. The steel plate is obtained by adopting hot rolling, EPS, continuous annealing and finishing processes, the processes of pickling and cold rolling are reduced, the production process is simplified, the production cost is reduced, and the environment is not polluted.

The invention belongs to the field of metal materials, and particularly relates to high-formability steel for a passenger car and a production method of the high-formability steel, the steel plate is mainly suitable for manufacturing passenger car structural parts, the steel comprises the following chemical components: C, Si, Mn, Al, Ti, Ta, Bi, Sb, Ni, Pt and Y, P is limited to be less than or equal to 0.015%, S is limited to be less than or equal to 0.005%, N is limited to be less than or equal to 0.003%, and the balance is Fe and inevitable impurities. The steel plate is obtained by adopting hot rolling, EPS, continuous annealing and finishing processes, the processes of acid pickling and cold rolling are reduced, the production process is simplified, and the environment is not polluted.

The invention discloses a complex water body pollution detection method and system based on an adaptive cruise technology, and belongs to the technical field of environment monitoring. The method overcomes the inherent defect that an existing monitoring scheme based on a static preset path cannot adapt to a dynamic pollution environment by constructing a closed-loop feedback control architecture of real-time sensing, central decision making and dynamic execution. Generating initial global pollution distribution estimation and planning an initial path by the main aircraft; the subordinate vehicle sails along the path and estimates the local pollution concentration and the gradient direction in real time; and the main aircraft fuses all data to update global estimation, and dynamically generates an instruction for guiding the subordinate aircraft to move towards a pollution concentration gradient rising direction after identifying a pollution plume or a hot spot, thereby realizing active tracking and high-resolution surveying and mapping. According to the invention, the efficiency, precision and intelligent response capability of pollution monitoring are significantly improved, and accurate and adaptive tracking of a dynamic pollution field is realized.

The invention relates to the technical field of transformers, in particular to an oil-immersed power transformer which comprises a hollow rod, a first round rod, a first piston, a first spring, a cylinder, a second round rod, a second piston, a limiting block and a ventilation assembly. A hollow rod is fixedly connected to the diaphragm; a first round rod is slidably connected to the hollow rod. A first piston is fixedly connected to the first round rod and makes contact with the lower end of the hollow rod. A cylinder is fixedly connected to the box body; through cooperation of the hollow rod, the first round rod, the first piston, the first spring, the cylinder, the second round rod, the second piston, the second spring and the limiting block, pressure relief operation can be automatically completed when pressure in the transformer body is increased abnormally, and therefore the transformer body can be protected; and the transformer oil sprayed out at a high speed can be intercepted and prevented from being sprayed to the outside to pollute the environment, the intercepted transformer oil is gathered on the upper side of the diaphragm, manual collection of the transformer oil can be facilitated, and waste is avoided.

The invention belongs to the field of metal materials, and particularly relates to high-strength passenger car steel and a production method thereof.The steel plate is mainly suitable for manufacturing passenger car structural parts, the steel comprises the chemical components of C, Si, Mn, Al, Nb, V, Ta, Bi, Sb, Ni, Cr, Pt and Y, P is limited to be smaller than or equal to 0.015%, S is limited to be smaller than or equal to 0.005%, N is limited to be smaller than or equal to 0.006%, and the balance Fe and inevitable impurities. The steel plate is obtained by adopting hot rolling, EPS, continuous annealing and finishing processes, the processes of pickling and cold rolling are reduced, the production process is simplified, the production cost is reduced, and the environment is not polluted.

The invention relates to the technical field of bauxite mining, in particular to a green mining method for bauxite under coal, and mainly solves the technical problems that pollutants in a goaf of an upper coal seam easily enter an aluminum layer, the recovery rate is low, an overlying rock layer easily collapses and a large amount of solid waste polluting the environment is generated in existing mining of bauxite under coal. The method comprises the following steps: S1, selecting a target rock stratum; s2, permeability transformation is conducted on the target rock stratum; s3, in-situ presplitting of bauxite; and S4, pillar-free comprehensive mechanical bag type filling mining is carried out. According to the method, old kiln water and poisonous and harmful gas in a coal seam goaf can be prevented from entering an aluminum mining working face during aluminum layer recovery, and the safety of aluminum layer recovery operation is greatly improved; ore body strength weakening can be achieved, fully-mechanized coal mining equipment loss is reduced, and fully-mechanized coal mining efficiency is improved; the recovery rate of bauxite can also be improved, and an overlying rock layer is prevented from collapsing; the coal gangue and the red mud can be treated and utilized in a large-scale and green manner, and the influence of industrial solid waste of the coal gangue and the red mud on the ecological environment is avoided.

The invention provides a circulating blow-down water treatment device and process based on a crystallization and granulation fluidized bed coal-fired power plant. The device comprises a cooling tower pool, a multi-medium filter, a crystallization and granulation fluidized bed, a circulating blow-down water buffer pool, a high-density clarification pool, a plug flow channel, a variable-porosity filter pool, a clarification water pool, a self-cleaning filter, an ultrafiltration device, an ultrafiltration water tank, an ultraviolet sterilizer, a security filter and a reverse osmosis device which are connected in sequence. According to the scheme, by introducing induced crystallization for hardness removal and synergistic silicon removal, deep precision treatment can be performed on the circulating sewage, quality-divided recycling is realized, and gradient utilization of water resources is realized; in addition, in the treatment process, the use of chemicals polluting the environment is reduced, the entry of chlorine radicals is avoided, and the great increase of the amount of the recycled desulfurization wastewater is effectively reduced.

The invention provides a preparation method of 4-fluoro-3, 5-dimethylphenylhydrazine hydrochloride, which comprises the following steps: salifying 4-fluoro-3, 5-dimethylaniline serving as a substrate with concentrated hydrochloric acid, reacting with sodium nitrite to prepare a diazo solution, reducing the diazo solution into corresponding phenylhydrazine by using alkaline sodium sulfite as a reducing agent system, and reacting the 4-fluoro-3, 5-dimethylphenylhydrazine hydrochloride with the diazo solution to prepare the 4-fluoro-3, 5-dimethylphenylhydrazine hydrochloride. And acidizing the 2, 5-dimethyl phenylhydrazine to obtain corresponding phenylhydrazine hydrochloride. According to the preparation method, sodium sulfite which is low in cost and easy to obtain is used as a reducing agent, the defects that metal residues are high, the environment is prone to being polluted and the raw material cost is high due to the fact that a metal reducing agent is adopted when phenylhydrazine hydrochloride is prepared in the prior art are overcome, the reaction is completed in a water phase, no organic solvent is adopted, and the concept of green chemistry is met; and the problems of complicated post-treatment and easy pollution caused by the adoption of an organic solvent can be effectively avoided.

The utility model relates to a pressure gauge, in particular to an anti-impact pointer pressure gauge. Comprising a pressure gauge body, a pointer is arranged on a movement shaft in the pressure gauge body, the pointer comprises a pointer body, a spring and a pointer tip, a mounting hole is formed in the middle of the pointer body, the pointer body is arranged on the movement shaft through the mounting hole, the spring is arranged between the pointer body and the pointer tip, and the pointer tip is arranged in the mounting hole. The two ends of the spring are fixedly connected with the needle tip and the needle body respectively. According to the anti-impact pointer pressure gauge designed in the scheme, when the pressure of a working medium is sharply reduced or increased and the point of the pointer impacts the stop pin on the dial, the spring deforms and unloads, and the pointer can be effectively prevented from deforming, being damaged and falling off. The pressure gauge does not need to be filled with damping liquid, so that the cost of the pressure gauge is greatly reduced, and the problem of environmental pollution caused by leakage of the damping liquid of the pressure gauge is solved.

The invention discloses Burkholderia gladioli HM-72 and application thereof, the Burkholderia gladioli HM-72 is preserved in China Center for Type Culture Collection on July 13, 2023, the preservation address is Wuhan University, Wuhan, No. 299, eight road, Wuchang District, Wuhan, Hubei, and the preservation number is CCTCC NO: M20231291. The strain is high in Pb stress resistance, and has the capability of partially dissolving phosphorus and producing siderophores. After the strain is applied to the Pb-polluted soil, the migration rate of Pb can be improved, the removal of Pb in the soil is accelerated, the Pb is accumulated in the overground part of the enrichment plant, the problem of repairing the lead pollution of the soil is solved, meanwhile, the strain can inhibit the growth of pathogenic fungi, the growth promoting and bacteriostasis characteristics of the strain can provide favorable conditions for the growth of the enrichment plant in a high-lead environment, and the application prospect is wide. The biomass accumulation is promoted, and the method has an application prospect in heavy metal polluted environment restoration.

The invention relates to the technical field of agricultural biomass pesticides, in particular to a preparation method of a lignin-based slow-release nano pesticide. According to the method, the cationic surface active agent-corn straw lignin nano pesticide with pH and enzyme double responsiveness is prepared through self-assembly. According to the material, cetyltrimethylammonium bromide (CTAB) is adopted as a cationic surface active agent to be prepared into modified lignin with corn straw, and the cationic surface active agent-corn straw lignin nano pesticide is further formed through a self-assembly method. The preparation method has the advantages of being simple in process, low in cost, environmentally friendly and the like, the obtained slow-release nano pesticide product is excellent in ultraviolet shielding performance, slow-release performance and insecticidal activity, pesticide can be accurately conveyed in a target spot mode, the possibility of pesticide residues and environmental pollution is remarkably reduced, and sustainable development of agriculture is promoted.

The invention provides a welding device for bus duct processing, and belongs to the technical field of welding devices.The welding device comprises a first support, the upper end of the first support is fixedly connected with a second support, the upper end of the second support is provided with a transverse moving module, the transverse moving module is provided with a longitudinal moving module, and the top of the second support is provided with a welding machine box; an electric telescopic rod is arranged at the lower end of the longitudinal moving module, a laser welding head is arranged at the output end of the electric telescopic rod, the welding machine box is connected with the laser welding head, a suction module is further arranged at the output end of the electric telescopic rod, and the side of the suction module communicates with a smoke dust stripping module. The welding device for bus duct machining solves the problems that a large amount of smoke dust can be generated in the welding process of an existing welding device for bus duct machining, the smoke dust can pollute the environment, certain harm can be caused to the body after long-term inhalation, and the environmental protection performance is poor.

The invention discloses a cleaning device for improving wafer surface cleanliness and a using method thereof, and relates to the technical field of semiconductor manufacturing, the cleaning device comprises a cleaning device main body, the bottom wall of the cleaning device main body is provided with a flushing liquid backflow assembly, and the flushing liquid backflow assembly comprises a liquid collecting tank installed on the bottom wall of the cleaning device main body; z-shaped filter plates which are arranged in a staggered manner are mounted in the liquid collecting tank; a first backflow pipe is installed on the back face of the liquid collecting tank in a penetrating mode, a third mixed-flow pump is installed at one end of the first backflow pipe, a second backflow pipe is installed at one end of the third mixed-flow pump, and a backflow box is installed at one end of the second backflow pipe in a penetrating mode; the bottom of the liquid collecting tank is inclined, the inner wall of the liquid collecting tank is made of polytetrafluoroethylene materials, and the inner wall of the liquid collecting tank is coated with a nanometer coating. By installing the flushing liquid backflow assembly on the bottom wall of the cleaning device body, the problems that in an existing cleaning device, the cleaning liquid recycling efficiency is low, impurity filtering is insufficient, the cleaning liquid waste treatment cost is high, and the environment is polluted can be solved.

The invention discloses a low-energy-consumption skid-mounted triethylene glycol dehydration tail gas zero-emission treatment device which comprises a tail gas cooling unit, a gas-liquid separation unit and a tail gas recycling unit which are connected in sequence, the gas-liquid separation unit comprises a gas-liquid separation tank, the gas-liquid separation tank is provided with a gas output pipe, and the gas output pipe is connected with the tail gas cooling unit. The tail gas recycling unit is provided with a tail gas input pipeline, the gas output pipe is communicated with the tail gas input pipeline, the tail gas input pipeline is further communicated with the power natural gas output pipeline, and an ejector is installed at the joint of the power natural gas output pipeline and the tail gas input pipeline. Tail gas and natural gas are conveyed to the rear end of the natural gas of the main pipeline. The system has the beneficial effects that regenerated tail gas after gas-liquid separation is mixed with power natural gas with pressure under the action of the ejector, and the tail gas is conveyed to the rear end of the natural gas of the main pipeline, so that the tail gas is recycled, the economic benefit is improved, zero emission of the tail gas is realized, and the environment is prevented from being polluted.

The invention discloses a cyanide-free cadmium plating bath solution, a preparation method of the cyanide-free cadmium plating bath solution and application of the cyanide-free cadmium plating bath solution in cadmium plating. The cyanide-free cadmium plating bath solution comprises the following components according to the concentration: 50-70 g / L of cadmium chloride, 180-250 mL / L of an etidronic acid aqueous solution, 16-33 g / L of potassium sodium tartrate, 0.01-0.2 g / L of polyethylene glycol, 0.01-0.2 g / L of a brightener and 0.01-0.1 g / L of an additive HY. The method has the advantages that the bath solution is environment-friendly and non-toxic, wastewater treatment is simple, a plating layer is high in deposition speed, fine in crystallization and good in binding force, the problems that cyanide cadmium plating pollutes the environment, EDTA cadmium plating is poor in stability and the like are effectively solved, and the method has good application value and economic and social benefits.

The invention discloses a method for repairing a phenanthrene-cadmium co-polluted environment by using a biochar-based immobilized microbial inoculum, the method is characterized in that the phenanthrene-cadmium co-polluted environment is treated by using the biochar-based immobilized microbial inoculum, and the biochar-based immobilized microbial inoculum is prepared by using modified peanut shell biochar as a carrier. The modified peanut shell biochar is loaded with a phenanthrene efficient degrading flora SMP, and the phenanthrene efficient degrading flora SMP is obtained by domesticating coking plant sludge as a raw material and polycyclic aromatic hydrocarbon as a carbon source. The method has the advantages of being high in treatment efficiency, good in remediation effect, simple in process, convenient to operate, low in treatment cost and the like, phenanthrene in the soil can be effectively removed, cadmium in the soil can be effectively fixed, the use value is high, the application prospect is good, and a green and environment-friendly biological way is provided for remediation of the phenanthrene-cadmium co-polluted environment.

The invention provides an arsenic hyperaccumulation double-gene recombinant vector and application of the arsenic hyperaccumulation double-gene recombinant vector in repairing an arsenic polluted environment, and belongs to the technical field of gene engineering. The arsenic hyperaccumulation double-gene recombinant vector takes a plant expression vector containing a pUbi promoter as a skeleton vector, and further comprises a PvACR3 gene and PvACR3, 1 gene and a prbcS promoter; wherein the pUbi promoter is used for promoting the expression of the PvACR3 gene; a prbcS promoter is used for starting the PvACR3; 1 gene expression. Aiming at the problem of rice death caused by high expression quantity of arsenic accumulation genes in transgenic rice in the prior art, through reasonable design of insertion genes and combination of promoters, toxicity of arsenic accumulation to the transgenic rice is avoided, and the arsenic removal quantity of the transgenic rice is greatly improved.

The invention discloses a phosphogypsum-based filling material and a preparation method thereof, and belongs to the technical field of mine backfilling. The ardealite-based filling material is prepared from the following raw materials in percentage by weight: 60-70% of ardealite, 8-20% of fly ash, 2-8% of sulphoaluminate cement and 2-18% of slag powder. The invention also discloses a preparation method of the phosphogypsum-based filling material. The ardealite filling material disclosed by the invention realizes efficient resource utilization of a large amount of industrial solid wastes, and the performance of the ardealite filling material meets the technical specification requirements of mine engineering; the problems that a large amount of ardealite is piled up, the utilization rate is low, and the environment is seriously polluted are solved, and the problems that an existing filling material is high in raw material cost, complex in additive variety, high in additive amount, long in setting time, high in bleeding rate and the like are solved.

The invention belongs to the technical field of deep sea manganese nodule treatment, and particularly relates to a method for microwave treatment of manganese nodules. When manganese nodules are treated in the prior art, the defects that an additional reducing agent needs to be added, a large amount of by-product gas polluting the environment exists in products, the reaction rate is low, the treatment time is long, energy consumption is high, pollution is large, and the separation efficiency of gangue components in minerals is low exist. In order to solve the problems, the method for microwave treatment of the manganese nodule comprises the following steps of microwave preheating activation, ore grinding premixing, microwave reduction acid leaching, sulfuration precipitation, microwave sulfuration smelting, oxygen-enriched blowing, microwave roasting oxygen pressure leaching, multi-stage extraction and microwave treatment. And the structure of the manganese-containing aggregate in the raw ore is destroyed, and gas-phase components in the raw ore overflow, so that the leaching rate and the recovery rate of valuable metals are greatly improved.

The invention discloses a fireproof and explosion-proof safety type transformer, and relates to the technical field of transformers, one side of the top end of an embedded fixing box is connected with an outer row fixing pipe in a penetrating manner, the top end of the inner side of the outer row fixing pipe is fixedly provided with a pressing spring, and the bottom end of the pressing spring is fixedly provided with an I-shaped clamping frame; a clamping sealing ring is fixed to the position, corresponding to the I-shaped clamping frame, of the inner side of the outer exhaust fixing pipe, a plurality of exhaust fixing holes are formed in the outer side end of the outer exhaust fixing pipe at equal intervals, and isolation double-layer sleeves are symmetrically welded to the top end of the inner side of the embedded fixing box. The situation that the environment is polluted due to the fact that transformer oil overflows when hot steam is exhausted is avoided, meanwhile, resources are recycled, resource waste is reduced, the transformer oil is supplemented in real time, stability of internal protection is guaranteed, meanwhile, an internal fire extinguishing component is used for directly conducting fire extinguishing treatment on the interior, and the environment is protected. And the condition of high-pressure deflagration and explosion caused by internal fire is avoided.

The invention relates to the field of stripping hanger liquid processing, in particular to environment-friendly stripping hanger liquid and a preparation process thereof. The cleaning agent is prepared from the following raw materials in percentage by weight: 10-15% of sulfuric acid, 3-6% of tetrasodium hydroxyethylidene diphosphate, 4-6% of sodium alcohol ether sulphate, 4-8% of N-methyl-2-pyrrolidone, 4-9% of cyclohexanol, 1-2% of phenolsulfonic acid, 4-7% of sodium hypochlorite, 5-9% of hydrogen peroxide, 3-4% of ferrous sulfate, 1-3% of sodium chloride, 4-8% of a wetting agent, 0.5-0.8% of a stabilizer, 2-3% of a thickening agent, 2-3% of a penetrant and the balance of pure water. Mild chemical components adopted in the formula replace strong nitric acid and strong alkali components in a traditional hanger stripping solution, the corrosivity of the hanger stripping solution is reduced, all the raw materials meet the environment-friendly requirement, and harmful substances cannot be generated in the production and use process, and the environment cannot be polluted.

The utility model relates to the technical field of cutting saws, and discloses an outward-swinging precise digital display cutting saw for manufacturing a precisely-carved cast aluminum door, which structurally comprises a corner sawing machine, a saw blade, a cleaning device, an atomizing mechanism and a collecting box, and has the beneficial effects that the cleaning device is additionally arranged on the corner sawing machine, and a gear is driven to rotate by virtue of a motor; the gear rotates to drive two sets of racks at the upper end and the lower end of the gear to move synchronously, the triangular scraping plate and the wiping block which are installed at the bottom of the gear move synchronously, residual chippings and dust on the workbench are cleaned, follow-up manual cleaning work is avoided, the machining efficiency is improved, the working intensity of workers is reduced, and the working efficiency is improved. And then by means of operation of a water pump in the water tank in the corner sawing machine, water flow in the water tank can be discharged into a flow dividing pipe through a water inlet pipe and sprayed out through a plurality of atomization nozzles arranged on one side of the flow dividing pipe, dust falling treatment is conducted on chippings and dust collected in the collecting box, and the situation that the dust splashes and pollutes the environment can be avoided.

The invention discloses a bacillus M3 and an application thereof. The bacillus M3 is separated from an extremely polluted environment by adopting a gradient pressure screening method, has relatively strong heavy metal tolerance, can remove uranium in soil, is used for in-situ remediation of uranium pollution of soil, has the characteristics of greenness, environmental protection and no drug residue, is high in biological safety, can greatly reduce the remediation cost, and reduces the damage of a soil structure.

The invention relates to the technical field of laser spot welding machines, and provides a laser spot welding machine for mold machining, which comprises a workbench, a mounting frame is fixed on the rear side of the top wall of the workbench, a first electric sliding rail is fixed on the top wall of the mounting frame, a vertical plate is fixed on the top wall of a sliding block of the first electric sliding rail, and a second electric sliding rail is fixed on the side wall of the vertical plate. A cross beam is fixed to the side wall of a sliding block of the second electric sliding rail, a laser spot welding machine body is fixed to the front end of the cross beam, the outer side of a welding head of the laser spot welding machine body is sleeved with a protection cover, and the gas spraying and collecting assembly, the eye protection assembly, the translation lifting assembly and the purification assembly are arranged on the workbench. By means of the technical scheme, the problems that most welding equipment in the prior art does not integrate the protective gas injection function and the waste gas treatment function, the health of operators can be threatened, the environment can be possibly polluted, meanwhile, strong light, ultraviolet rays and infrared rays are generated during welding, and the operators are prone to visual damage in the welding process are solved.

The invention discloses aquatic microbe and an application of the aquatic microbe in degradation of atrazine. The water microbe is named as Aquammicrobium lusiense HR8, and the preservation number of the water microbe is CGMCC (China General Microbiological Culture Collection Center) No. 28916. The invention also discloses a microbial inoculum containing the aquatic microbe, a method for culturing the aquatic microbe and a method for degrading triazine herbicides. The invention discloses that Aquammicrobe is used for degrading atrazine for the first time, the degradation rate of Aquammicrobe HR8 on 200 mg / L atrazine in 48 hours is 100%, the Aquammicrobe HR8 is applied to bioremediation treatment of an atrazine polluted environment, the defect that the bioremediation removal effect on atrazine is poor at the present stage can be overcome, and meanwhile secondary pollution to the environment is reduced.

The invention belongs to the field of wood modification, and relates to plastic wood, a preparation method thereof and application of the plastic wood in preparation of acoustic materials. The technical problems that in the prior art, wood is insufficient in flexibility and plasticity, the preparation process is complex, and the cost is high are solved. The invention provides a preparation method of plastic wood, which comprises the following steps: removing lignin from log to obtain pretreated wood; the wood is put into an epoxy soybean acrylate solution to be soaked, the concentration of epoxy soybean acrylate ranges from 10 wt% to 40 wt%, and the soaked wood is obtained; and the flexibility and plasticity of the obtained plastic wood are improved, and the dimensional stability is improved. Meanwhile, aiming at the technical problems that in the prior art, an acoustic material is too large in dead weight and difficult to update, low-frequency sound wave dissipation capacity is poor, the environment is polluted, and human health is harmed, the invention further provides a preparation method of the acoustic material, and the defects of a traditional sound insulation material are overcome while the performance requirement is met. The invention further provides application of the plastic wood and the acoustic material.