43results about How to "Efficient purification" patented technology

This invention relates to the field of wastewater treatment technology, and in particular to a wastewater purification and reuse device based on a membrane bioreactor. Addressing the limited removal efficiency of pollutants adhering to membrane elements in existing technologies, this invention provides a wastewater purification and reuse device based on a membrane bioreactor. The device includes a treatment tank containing a membrane bioreactor assembly. The assembly includes an assembly frame with multiple membrane elements mounted on it. Scrapers that cooperate with the membrane elements are located on both sides of a horizontal plate. A cleaning assembly also includes a vertically movable frame. When the frame moves downwards, the horizontal plate moves downwards, and the scrapers clean the outer surface of the membrane elements downwards. A movable scraper is located on a support, and a collection box is located on one side of the support. When the scraper moves to one side, the collection box opens. By directly scraping away impurities adhering to the outer surface of the membrane elements, suspended solids, colloidal particles, microbial flocs, and other pollutants on the membrane surface can be removed quickly and effectively.

This invention belongs to the field of wet electronic chemicals technology, specifically relating to a method for preparing electronic-grade hydrogen peroxide. The method includes the following steps: adjusting the concentration of raw hydrogen peroxide, and then filtering it sequentially through a reverse osmosis membrane, a modified cation exchange resin, an anion exchange resin, and a mixed ion exchange resin to obtain electronic-grade hydrogen peroxide. The modified cation exchange resin used is modified based on conventional cation exchange resin through pore expansion and grafting, optimizing the spatial matching of pore structure and functional sites. This achieves passivation of metal ions, enhanced adsorption capacity, and improved oxidation resistance, as well as a deep synergistic effect of these three effects. Ultimately, it achieves the dual goals of efficient purification and stable operation of the resin in the hydrogen peroxide system. The resulting electronic-grade hydrogen peroxide can reduce the content of single impurity metal ions to below 5 ppt, meeting the requirements of SEMI G5 standards, and can be directly applied to high-end manufacturing fields such as semiconductor wafer cleaning.

This invention relates to the field of water treatment, specifically to an iron-doped biomass resource-based water treatment catalyst, its preparation method, and its application. The preparation of the water treatment catalyst includes the following steps: Step 1, drying and dehydrating recovered pigeon manure; Step 2, finely sieving the dried pigeon manure; Step 3, heat-treating the purified pigeon manure in a muffle furnace to obtain resource-based biochar; Step 4, ball milling dopamine hydrochloride, ferric chloride hexahydrate, and resource-based biochar at a mass ratio of 1:(5-15):(80-100); Step 5, calcining the ball-milled material in a tube furnace at 850-950℃. The water treatment catalyst provided by this invention can rapidly reduce the antibiotic content in wastewater, while accelerating antibiotic removal under ammonia nitrogen conditions. It achieves long-term continuous purification during long-term reaction, exhibiting good stability and removal effect, and is beneficial for achieving low-cost treatment of agricultural waste and efficient purification of new pollutant wastewater.

This utility model relates to the field of quartz sand processing technology, specifically to a quartz sand drying system. It includes a frame and a horizontal drum rotatably mounted on the frame. Several support rollers for supporting the horizontal drum are installed on the frame. A biomass hot air device is also included. Fixed covers are fitted onto the outer sides of both ends of the horizontal drum. A heat-conducting cylinder is coaxially installed inside the horizontal drum, with both ends mounted on the frame and extending through the two fixed covers. A drying space is formed between the heat-conducting cylinder and the horizontal drum. The air outlet of the biomass hot air device is connected to one end of the heat-conducting cylinder, and the other end of the heat-conducting cylinder is connected to an exhaust gas treatment device. A feed inlet is connected to the fixed cover near the air outlet of the biomass hot air device, and an outlet is provided on the fixed cover at the other end. Both the feed inlet and outlet are connected to the drying space, which is connected to the exhaust gas treatment device via an exhaust pipe. This quartz sand drying system has low drying costs and does not contaminate the quartz sand.

The utility model relates to the technical field of plate waste water, and discloses zero-discharge plate waste water membrane separation environment-friendly treatment equipment which comprises a shell assembly, a membrane separation assembly and a membrane separation assembly, the shell assembly comprises a shell, and the top of the shell is communicated with water inlet pipes which are symmetrical to each other; the mixing assembly comprises a first rotating rod and a second rotating rod, and the first rotating rod and the second rotating rod are located on the inner side of the shell and rotationally connected with the shell; an operator respectively throws wastewater to be treated and treatment liquid into the shell through the water inlet pipe. A partition plate I divides a water body, a filter plate preliminarily intercepts particles in the water, then a rotating motor is started to drive a rotating rod I and a gear I to rotate, a gear II rotates through gear meshing transmission, and then a rotating rod II is driven to rotate; according to the meshing characteristic of the gear, the rotating rod I and the rotating rod II rotate reversely, so that the stirring rod forms bidirectional stirring on the water body, the mixing effect of the wastewater and the treatment liquid is enhanced, and the mixing efficiency and uniformity of the wastewater and the treatment liquid are improved.

The utility model discloses an oil mist purification device for a CNC (Computer Numerical Control) machining center, which relates to the technical field of CNC machines and comprises a purification chamber, a sliding plate, a mist inlet pipe, a cover plate, an oil mist purification mechanism, a fixed clamping plate, an HEPA (High Efficiency Particulate Air) filter screen, an activated carbon plate, a turbulent flow mechanism, a transverse reciprocating mechanism and a fan. Oil mist enters the purification chamber through the mist inlet pipe, oil drops are preliminarily separated through the oil mist purification mechanism, then airflow is disturbed through the flow disturbing mechanism, the purification efficiency is improved, fine particles are further filtered and peculiar smells are further adsorbed through the HEPA filter screen and the activated carbon plate, air inlet is optimized through the transverse reciprocating mechanism, and purified gas is exhausted through power provided by the draught fan. The device adopts a multi-purification structure, combines automatic cleaning and optimized air inlet design, is high in purification efficiency and convenient to maintain, and meets the oil mist purification requirement of the CNC machining center.

The air purification device for the pet box comprises a box body located on a box body and a box cover arranged on the top of the box body in a covering mode, a partition plate is arranged in the box body and divides the interior of the box body into an installation cavity and a reaction cavity used for containing biological enzyme mixed liquid, a power source and a vacuum pump are arranged in the installation cavity, and the power source and the vacuum pump are arranged in the reaction cavity. The vacuum pump is communicated with the interior of the box body through an exhaust pipe and communicated with the reaction cavity through an exhaust pipe, a plurality of exhaust holes communicated with the reaction cavity are formed in the box cover, and the vacuum pump extracts foul gas in the box body through the exhaust pipe and discharges the foul gas into the reaction cavity through the exhaust pipe. The biological enzyme mixed liquid in the reaction cavity decomposes pollutants in the foul gas, and the purified gas is discharged through the exhaust hole. According to the air purification device for the pet box, foul air in the box body is pumped out by the vacuum pump through the exhaust pipe, the foul air is discharged into the reaction cavity through the exhaust pipe, pollutants in the foul air are decomposed by biological enzyme mixed liquid in the reaction cavity, and purified air is discharged through the exhaust hole.

The utility model discloses a handheld cutting machine is with dustproof structure belongs to cutting machine technical field, and its technical scheme main points include cutting machine body, the outside of cutting machine body is provided with the shell, the outside of shell is provided with water spraying subassembly, the right side of shell is provided with dust absorption subassembly, water spraying subassembly includes the support plate fixed connection in the shell outside, the outside fixed connection of support plate has micro motor, can solve the current handheld cutting machine is with dustproof structure inconvenient according to cutting working condition real -time adjustment water spraying position and range to cause dust cover not comprehensive, and there is blind angle, influence dust suppression effect, and the current dust absorption structure often lacks multistage dust separation purification design, inconvenient to the efficient processing of different particle size dust to cause big granule dust accumulation block, fine dust excretion, influence equipment operation stability and working environment quality problem.

This application relates to the field of condensate collection and reuse, and in particular to a condensate collection and reuse device, comprising a condensate collection system for receiving steam from the steam outlet of a dyeing and drying equipment and condensing the received steam to form condensate; a multi-stage recovery tank, including a primary recovery tank, a secondary recovery tank, and a tertiary recovery tank connected in sequence, with the output end of the condensate collection system connected to the primary recovery tank; a storage tank for storing the condensate; and a pumping mechanism for pumping the condensate from the tertiary recovery tank to the storage tank. This application has the effect of reducing water waste and environmental pollution.

The application discloses a preparation method of high-purity sodium nitrate in the technical field of inorganic chemical industry, and comprises the following steps: dissolving crude sodium nitrate in deionized water and heating and stirring to obtain a crude solution; pre-saturating and activating a multi-dimensional cerium tungsten titanium heteropoly acid salt grafted mesoporous silica-aluminum skeleton material in saturated sodium nitrate aqueous solution; adding the activated material into the crude solution to perform stirring reaction, and filtering to obtain a sodium nitrate mother liquor; performing vacuum concentration, natural cooling crystallization, centrifugal separation and drying on the mother liquor, so that high-purity sodium nitrate is obtained. The method can efficiently remove impurities in sodium nitrate, and the product has high purity.

The utility model relates to high -purity antimony processing equipment technical field, concretely is a kind of high -purity antimony vacuum distillation pipe device, including bushing, for guiding antimony steam to enter into tray inside;Tray, tray is provided with gas guide hole, grating, for condensing receiving material;Conical tube, conical tube is conical, for low boiling point impurity and a small amount of antimony condensation.The high -purity antimony vacuum distillation pipe device in this device, by setting 5-10 trays from top to bottom in bushing, and the gas guide hole of adjacent two layers of trays is cross arrangement, make steam present S type route movement.This design greatly increases the movement path and contact area of antimony steam in device, effectively controls steam flow state, avoids the phenomenon that antimony steam appears uneven distribution, over-condensation or condensation is not sufficient in condensation process, significantly improves the condensation efficiency and crystallization quality of high -purity antimony.

The utility model discloses a tail gas purification treatment device of biological oxidation gold extraction relates to tail gas purification treatment device technical field, the utility model discloses a main frame mechanism, the main frame mechanism includes the purification tower, the left side fixedly connected with the air inlet pipeline of purification tower outer surface, the top fixedly connected with the exhaust pipe of purification tower, the bottom fixedly connected with the deflector of purification tower inside, the utility model discloses a purification subassembly is set up, specifically is through setting up multilayer carbon filling layer, and carbon filling layer adopts the mixture of active carbon and modified molecular sieve, can increase the contact area and contact time of tail gas and absorption liquid and adsorbent, improve the removal efficiency to harmful gas, simultaneously, sodium hydroxide and hydrogen peroxide in absorption liquid can carry out chemical reaction and oxidation decomposition to different properties harmful gas, thereby realize the efficient purification to multiple harmful gas, effectively reduced the emission concentration of harmful substance in tail gas, and the environmental protection emission standard has been greatly improved.

This utility model relates to the field of raw material cleaning technology and discloses a special cleaning machine for raw materials, including a base plate and a cleaning tank. A protective shell is fixedly connected to the left outer wall of the cleaning tank. A motor is mounted on the outer wall of the protective shell. A rotating shaft is fixedly connected to the drive end of the motor. A gear is fixedly connected to the outer wall of the rotating shaft. A toothed plate is meshed with the upper end of the gear, and a toothed plate is meshed with the bottom end of the gear. A cleaning screen is fixedly connected to the right outer wall of both toothed plates. In this utility model, the motor, rotating shaft, gear, toothed plate, and cleaning screen are sequentially connected and work together to achieve the alternating movement of the cleaning screen in and out of the cleaning tank, realizing the function of cleaning and removing cleaned materials simultaneously. By utilizing the meshing transmission of the gear and toothed plate, the guiding support of the inner wall of the cleaning tank, and the unique design of the double-layer cleaning screen, the working efficiency and effect of a special cleaning machine for raw materials are improved.

This utility model relates to the field of sanitary napkin production technology, and more particularly to a sterilization device for sanitary napkin production. This utility model provides a sterilization device for sanitary napkin production, including a support frame, a motor, a conveying assembly, and an ultraviolet lamp. The motor is installed on the front side of the support frame, and the conveying assembly is arranged inside the support frame. The output shaft of the motor is connected to the conveying assembly. An ultraviolet lamp is installed at the top inside the support frame. It also includes a collection frame, a drain pipe, and a water pump. The collection frame is installed at the bottom of the support frame, and the drain pipe is connected to the bottom of the collection frame. The water pump is installed on the front side of the support frame. By starting the water pump, the pump draws clean water into the spray pipe, and then sprays it out onto the surface of the conveying assembly, cleaning residual dirt and disinfecting the conveying assembly. Meanwhile, the conveying assembly continues to operate under the drive of the motor, facilitating cleaning and disinfection of different parts of the conveying assembly, keeping it clean for subsequent use.

This invention relates to the field of coatings, specifically to a wear-resistant, formaldehyde-removing artistic coating and its preparation method. The coating, by weight, comprises: 45-55 parts of waterborne polyurethane-modified acrylic emulsion, 15-25 parts of silane-modified filler, 4-8 parts of supported formaldehyde-removing filler, 6-12 parts of pigment, 0.2-0.6 parts of dispersant, 0.1-0.4 parts of defoamer, 0.3-0.8 parts of thickener, 1-3 parts of film-forming aid, and 15-25 parts of deionized water. This invention achieves a balance between film hardness and toughness by using waterborne polyurethane-modified acrylic emulsion as the film-forming substance and combining it with silane-modified filler. The polyurethane segments provide excellent flexibility and resilience, the acrylic segments provide high hardness, and the silane-modified filler forms a strong chemical bond with the resin matrix through a silane coupling agent, improving the overall performance of the coating and extending its service life.

The invention relates to the field of energy and fuel cells, and discloses a hydrogen purification method and a methanol reforming hydrogen production method, the method comprises the following steps: adsorbing a mixed gas containing hydrogen and carbon monoxide, and then carrying out at least one-stage membrane separation; wherein the hydrogen-containing mixed gas contains hydrogen and carbon monoxide. The method for purifying hydrogen has the advantages of high yield and high purity, and carbon monoxide and hydrogen can be efficiently separated by adopting membrane separation. The methanol reforming hydrogen production system provided by the invention can efficiently purify hydrogen from a methanol reforming product.

The application discloses an active magnetic field probe circuit, device, system and electromagnetic interference detection method, wherein the circuit comprises a probe signal acquisition circuit, a full-differential amplifier link and a differential-to-single-end output circuit which are connected in sequence; the input end of the probe signal acquisition circuit is connected to the differential output end of a magnetic field probe sensor, and is used for receiving a raw voltage signal containing a differential mode signal and common mode noise generated by the sensor; the full-differential amplifier link comprises at least two stages of full-differential amplifiers which are connected in cascade; the differential input end of the differential-to-single-end output circuit is connected to the output end of the last stage of the full-differential amplifier link through a direct-current isolation capacitor, and the single-end output end of the differential-to-single-end output circuit is connected in series with an output matching resistor. The circuit of the application improves the accuracy of electromagnetic interference source positioning and the test efficiency.

The present application belongs to the technical field of mineral processing and environmental protection, and particularly relates to a method for removing impurity metal ions and compounds in raffinate acid. The impurity metal ions and compounds such as iron, magnesium and aluminum in the raffinate acid are selectively removed under the synergistic action of adsorption materials and flotation reagents. The method mainly uses the strong adsorption of the adsorption materials and the strong selectivity of the specific flotation reagents, and uses the adsorption materials and the flotation reagents in combination, and through adjusting and controlling the types, the ratio, the dosage of the adsorption materials and the flotation reagents, and the reaction sequence, the time and the temperature, the selective removal of the impurity metal ions and compounds in the raffinate acid is realized, and the comprehensive utilization rate of the raffinate acid is improved. The method is suitable for the purification system of the raffinate acid in the phosphorus chemical industry, and has the advantages of simple method, strong selectivity, remarkable effect and short action time, and has important significance for solving the problems of difficult disposal and reuse of the raffinate acid, high production cost of the phosphorus chemical industry and serious waste of phosphorus resources.

The utility model discloses a multifunctional integrated industrial waste gas purification device, including box, heater, sterilizing lamp, socket, plug, plug locking assembly, spray component and cleaning component, the inside fixed of box is equipped with heater, spray component and sterilizing lamp, the outside fixed of box is equipped with socket, the inside of socket is equipped with plug and plug locking assembly, plug locking assembly is used for locking connection of socket and plug, be equipped with the cleaning component of cleaning spray component on the box. First, the waste gas is treated by the heater at high temperature, and then the water curtain spray formed by the spray component is used for primary dust removal and purification of the particulate matter in the waste gas, the sterilizing lamp is used for killing and decomposing the bacteria, virus and part of organic pollutants in the waste gas, the purification depth is enhanced, the cleaning component is used for cleaning the problem of the spray head blockage of the spray component during operation or maintenance, and the plug locking assembly is used for ensuring the reliable locking of the plug and preventing the loosening caused by the operation vibration or the misoperation.

The application discloses a variable-flow type purification device of a hydrogen purification adsorption tower and belongs to the technical field of hydrogen purification. The variable-flow type purification device of the hydrogen purification adsorption tower comprises a tower body, vacuum extraction pipes and gas inlet pipes are connected to the lower outer side of the tower body, an exhaust pipe is connected to the top of the tower body, first and second positioning screens are fixedly arranged on the inner side of the tower body, a fixing seat is fixedly installed on the upper inner side of the tower body, an elastic lifting connection is formed between the upper part of the fixing seat and a movable seat, a sealing plate is also fixedly installed on the upper inner side of the tower body, a rubber cylinder body for adjusting air pressure is fixedly connected between the movable seat and the sealing plate, and a flushing pipe is connected to the outer side of the upper part of the tower body. The variable-flow type purification device of the hydrogen purification adsorption tower can realize real-time regulation and control of the gas flow rate according to the purity of hydrogen purification, ensures the purification efficiency and the purity, and can realize efficient desorption in a combined manner, so that effective adsorption and purification of the adsorption tower are ensured.

This utility model relates to the field of dust removal technology in paint production, and is a dust removal device for paint production. It includes a negative pressure main pipe, a negative pressure main pipe 2, a bag filter dust collector, a dust removal fan, an activated carbon adsorption box, a UV photolysis purifier, a blower, and a return air duct. The negative pressure main pipe 1 is equipped with at least two negative pressure branch pipes 1. This utility model has a reasonable and compact structure and is easy to use. It uses the negative pressure main pipe 1 to collect dust from the equipment to be collected, sending it to the bag filter dust collector for dust removal. The negative pressure main pipe 2 absorbs harmful gases, which are then sequentially sent through the exhaust duct and dust removal fan to the activated carbon adsorption box and the UV photolysis purifier for dust removal and purification. Finally, the air is returned to each workshop through the return air duct by the blower, forming an air circulation system and achieving effective dust removal and purification. It features good system circulation, good dust removal effect, low energy consumption, high working efficiency, and good dust removal and waste gas treatment effect.

The utility model discloses an organic waste gas purification activated carbon adsorption device, the utility model relates to waste gas treatment technical field. Including the purification shell, still including the filter component, the outer wall of filter component is inserted with the inner wall of purification shell, the inner wall fixed connection of purification shell has the removal component, the filter component includes the installation shell, the inner wall fixed connection of installation shell has the honeycomb shell, this adsorption device passes through the honeycomb of honeycomb shell unique in filter component The structure has very big specific surface area, so that the activated carbon particle filled in the inside can be fully exposed in the waste gas, and the microporous structure of activated carbon is rich and has strong adsorption force to organic molecules, when waste gas passes through the filter hole of honeycomb shell and enters the inside, and fully contacts activated carbon particle, and the adsorption device reaches the purpose of organic waste gas purification activated carbon adsorption device.

This invention discloses a method for preparing high-viability fat grafts, comprising: aseptically transferring adipose tissue in a closed system while maintaining complete isolation from air during the transfer; performing multi-stage liquid washing on the adipose tissue, including an initial washing and a secondary washing, to remove blood components, tissue debris, and drug residues; subjecting the washed adipose tissue to gradient centrifugation, including an initial low-speed centrifugation and a secondary high-speed centrifugation, to achieve uniform separation of fat cells through a sieve; and collecting the centrifuged fat grafts to obtain a final product with high cell viability and a high proportion of concentrated stem cells. By combining multi-stage liquid washing with gradient centrifugation, efficient purification and uniform separation of fat cells are achieved, effectively reducing the risk of inflammation and removing harmful residues such as lidocaine, resulting in a final fat graft with a high proportion of stem cells and excellent biocompatibility, supporting regenerative medicine applications.

The invention belongs to the technical field of gas separation, and provides a double-reflux pressure swing adsorption separation method for methane-nitrogen-oxygen mixed gas by a two-stage method. Feeding mixed gas from the bottom of the first-order high-pressure tower, outputting one part of gas extracted from the tower top, and flushing the first-order low-pressure tower with the other part of gas; produced gas at the bottom of the first-order low-pressure tower enters a second-order double tower; after first-order double-tower pressure equalizing, vacuumizing the original high-pressure tower to reduce to low pressure, and raising the original low-pressure tower to high pressure; the two towers exchange time sequences, and pressure swing adsorption is circularly carried out; gas produced from the tower bottom of the first-order low-pressure tower is fed from the tower bottom of the second-order high-pressure tower, at the moment, part of gas output from the tower bottom of the second-order low-pressure tower is output, the other part of gas output from the tower bottom of the second-order high-pressure tower is fed, and gas output from the tower top of the second-order high-pressure tower is circulated back to the first-order low-pressure tower; after second-order double-tower pressure equalizing, vacuumizing the original high-pressure tower to reduce to low pressure, and raising the original low-pressure tower to high pressure; the two towers exchange time sequences, and pressure swing adsorption is circularly carried out. The method can effectively separate the low-concentration mixed gas and improve the utilization rate of methane in the low-concentration methane coal bed gas.

This application provides a molten steel slag mixing, solidification, and crushing system and method. The system includes a processing chamber, a mixing zone, a slag dumping device, a feeding device, a stirring and crushing device, a screening device, and a dust removal device. The slag dumping device and the mixing zone are located in the processing chamber. The slag dumping device is used to dump molten steel slag into the mixing zone. The feeding device is used to send solid cooling medium into the mixing zone. The stirring and crushing device is located in the mixing zone and is used to stir and mix the molten steel slag with the solid cooling medium, so that the molten steel slag cools, solidifies, and is crushed into granules. The screening device is located on one side of the mixing zone and is used to separate and output the crushed and granulated steel slag according to particle size. The dust removal device is connected to the processing chamber. This application achieves efficient cooling and crushing by mixing solid cooling medium with molten steel slag, integrates a screening device to simplify the process flow, and adopts closed treatment and dust removal to improve environmental performance. It has the advantages of high waste heat recovery efficiency, high processing efficiency, low investment cost, and good environmental performance.

The application discloses a method for synthesizing 2,5-disubstituted pyrroline by a three-enzyme co-immobilization system, and adopts a one-pot cascade biocatalysis method to synthesize 2,5-disubstituted pyrroline. The co-immobilized enzyme obtained by co-immobilizing L-amino transferase, L-lactic acid dehydrogenase and glucose dehydrogenase on an amino resin ESQ-3 is used as a catalyst for a synthesis reaction, and a deep eutectic solvent formed by betaine and glucose is added to a synthesis system. The co-immobilized enzyme is prepared by a method that L-amino transferase is first immobilized on the amino resin ESQ-3, and then L-lactic acid dehydrogenase and glucose dehydrogenase composite particles obtained by ammonium sulfate precipitation are continuously immobilized. The synthesis method can obtain a higher stable conversion rate, and a product is easier to separate and purify. Enzymes and coenzymes are efficiently recycled, regenerated and reused. In addition, a reaction medium added with the deep eutectic solvent has a significant positive effect on solubility of a substrate, stability of the enzyme and mass transfer of the system, so that an immobilized enzyme method catalytic synthesis reaction system suitable for industrial application is effectively constructed.

The utility model discloses a kind of parallel recovery devices of proton exchange membrane fuel cell engine hydrogen system, comprising: outer shell, the outer shell top is equipped with opening and detachable protective cover, the inside of the outer shell is equipped with first installation box and second installation box arranged side by side, the utility model uses parallel dryer group to process electric pile tail gas, significantly improves drying efficiency and system stability. Two dryers work synchronously, double the water absorption capacity, cope with high-humidity large-flow condition;More provide operation redundancy, when single dryer saturation, another can still maintain operation, guarantee reliability. The middle section of the curved pipe connecting two dryers is embedded with a ball tube buffer cavity, when system pressure fluctuation may cause siphon, gas in the cavity forms a physical barrier, effectively prevents gas reflux impact on the stack, protects the safety of core components.

This invention discloses a mixing device for pouring uniform fluidized solidified soil, comprising: a mixing tank supported to the ground by a base, wherein a mixing component is provided inside the mixing tank for mixing materials; a vibration damping component connected to the bottom of the base for reducing the vibration of the mixing tank; a noise reduction component connected to the outside of the mixing tank for reducing the noise generated by material mixing; and a purification component connected to the upper part of the mixing tank for collecting and purifying polluting gases generated by material mixing. A gas guiding structure is provided inside the mixing tank for guiding the polluting gases inside the mixing tank to the location of the purification component. The mixing device conforms to green construction standards.