169 results about "Gaseous pollutants" patented technology

The invention relates to the technical field of monitoring and detection, and discloses an intelligent early warning method and system for gaseous pollutants in the semiconductor industry, and the method comprises the steps: analyzing the molecular weight of the gaseous pollutants according to the mass-to-charge ratio in an original mass spectrum signal, and analyzing the pollutant type and concentration space-time distribution matrix of the gaseous pollutants according to the molecular weight; carrying out pollution source analysis on the gaseous pollutants according to the pollutant types and the concentration space-time distribution matrix; analyzing the concentration contribution rate of the target pollution source by using the pollutant component characteristics, and analyzing the multi-stage dynamic early warning condition of the gaseous pollutants according to the concentration contribution rate and the concentration spatial-temporal distribution matrix; when the pollutant concentration data in the concentration space-time distribution matrix exceeds a multi-stage dynamic early warning condition, triggering a graded early warning signal of gaseous pollutants in the semiconductor industrial environment; and adaptively executing a control strategy corresponding to the gaseous pollutants in the semiconductor industrial environment based on the graded early warning signal. According to the invention, the accuracy of intelligent early warning of gaseous pollutants in the semiconductor industry can be improved.

This invention discloses a photoelectrocatalytic degradation device for gaseous pollutants, relating to the field of pollutant treatment technology. It includes a treatment box with four partitions fixedly installed inside. Between each pair of adjacent partitions, a pollutant degradation structure is provided. Each pollutant degradation structure includes four filter cartridges and five linear light sources (secondary). Each of the four filter cartridges contains a linear light source (primary). A U-shaped frame is fixedly installed on the outside of each of the four filter cartridges, and a sponge block is fixedly installed on the outside of the U-shaped frame. Gear transmission components are provided on one side of each of the three pollutant degradation structures. By controlling the drive motor, the three pollutant degradation structures can be cleaned under the transmission of the gear transmission components, reducing impurities adhering to the outside of the four filter cartridges, the four linear light sources (primary), and the five linear light sources (secondary), thus reducing the labor costs required for maintenance of the photoelectrocatalytic degradation device.

The invention provides a source analysis method embedded in atmospheric monitoring equipment. The method comprises the following steps: (1) data acquisition; (2) data preprocessing and feature extraction; (3) constructing a lightweight source component spectrum database; (4) performing online recursion analysis calculation; and (5) non-negative constraint and result output. According to the method, the problem of how to systematically and fundamentally solve multiple bottleneck problems caused by time lag, space limitation, huge equipment, lengthy flow and data distortion under the background that a traditional atmospheric particulate matter and gaseous pollutant source analysis system is bound by an off-line sampling-laboratory analysis mode for a long time is solved.

The invention provides a remote monitoring method and system applied to an air quality intelligent station building, and belongs to the technical field of air quality monitoring. Firstly, a multi-source monitoring element set including operation data of a particulate matter monitor, a gaseous pollutant analyzer and the like of the air quality intelligent station building is obtained; carrying out station building scene linkage processing to generate a station building association relationship; identifying station building abnormal features based on the station building association relationship, and generating a station building abnormal identification result containing abnormal element types and expression forms; performing layered tracing on the station building abnormity identification result, and positioning an abnormity root initial link and a diffusion path; the dynamic regulation and control instruction is generated by combining the root information and is sent to the local control terminal, the feedback result is received, and the monitoring closed-loop record is generated, so that comprehensive, accurate and efficient remote monitoring is realized, and the operation stability and data quality of the station building are improved.

A microfluidic preconcentrator is provided, designed to receive a gas sample containing gaseous pollutants such as volatile organic compounds, to concentrate the gaseous pollutants and to transfer them to an analysis device. An assembly comprising an enclosure, a microfluidic preconcentrator, connectors and a means for holding the microfluidic preconcentrator inside the enclosure, a heating device and a cooling device, are provided.

This invention relates to the field of home appliance technology, and discloses a range hood and a method for displaying fume information. The range hood includes: a housing; a plasma discharge module adapted to generate plasma through discharge, so that particulate matter in the fume flowing through the plasma purification zone is charged and collected by the electric field; a back corona catalytic module adapted to generate back corona discharge in the back corona treatment zone, so that gaseous pollutants in the fume repeatedly oscillate in the back corona treatment zone and are adsorbed and / or decomposed; and a pollutant interception component disposed between the back corona treatment zone and the air outlet, and having a plurality of micropores, adapted to intercept small particulate matter in the fume. This invention, through the configured back corona module, can effectively remove gaseous pollutants from the fume, and through the pollutant interception component with micropores, can further intercept residual particulate pollutants, effectively preventing the escape of residual particulate pollutants and further improving the fume purification efficiency.

The invention provides a zero-emission power circulation and fuel gas supply system and method for an LNG power-driven ship. The system comprises an internal combustion engine, a nitrogen membrane separation device, a heat regenerator, a water separator, a liquid CO2 storage tank, a liquid oxygen pump, an LNG pump, an LNG storage tank, a liquid oxygen storage tank, a CO2 condenser, a circulation compressor, a gas buffer tank, a CO2 separator, a first-stage water cooler and a second-stage intermediate heat exchanger. According to the internal combustion engine, LNG serves as fuel, an argon and oxygen mixture serves as a circulating working medium to replace air and natural gas to be combusted and push a piston to move, water vapor and gas CO2 in waste gas generated by the internal combustion engine are condensed and separated after being subjected to stepped cooling, and CO2 is liquefied through a circulating compressor and recycled to a liquid CO2 storage tank. According to the invention, argon is used for replacing air to realize waste heat recovery of the internal combustion engine, so that the energy efficiency of the system is improved, and meanwhile, CO2 capture and zero emission of gaseous pollutants are realized.

The utility model discloses an integral dust removal system for a workshop, which relates to the technical field of dust removal and comprises a dust collection pipeline, a bag-type dust remover, an air compressor, an induced draft fan, a spray tower and an exhaust pipeline, the dust collection pipeline is connected into a plurality of stations, an air inlet of the bag-type dust remover is connected with the dust collection pipeline, and the air compressor is communicated with the bag-type dust remover through a pipeline. An air inlet of the induced draft fan is communicated with an air outlet of the bag-type dust collector through a pipeline, an air inlet of the spray tower is communicated with an outlet of the induced draft fan through a pipeline, and the exhaust pipeline is communicated with an air outlet in the top of the spray tower through a pipeline. According to the utility model, cloth bag dust removal and spray tower dust removal are carried out in sequence, high-efficiency dust removal and deep purification can be realized through graded purification, the ultra-low emission requirement is met, and gaseous pollutants are removed at the same time; the system stability is improved; and dust escape and secondary pollution are prevented. The included angle between the dust collection pipeline and the horizontal plane can prevent smoke dust from accumulating in the pipeline due to horizontal laying of the pipeline.

This application relates to the field of big data acquisition technology and provides a carbon-saving deodorization control method and system based on online gas monitoring. The method includes: deploying a corresponding sensor array according to a preset sensor deployment strategy to collect gaseous environmental data, obtaining a multi-dimensional spatiotemporal dataset; extracting features from the multi-dimensional spatiotemporal dataset using a multi-layer convolutional neural network to obtain a diffusion feature set of odor pollutants; constructing an odor pollutant diffusion model based on the diffusion feature set; simulating the probability distribution of the diffusion path of the odor pollutants using a Monte Carlo algorithm based on the odor pollutant diffusion model to generate a diffusion topology; determining the control priority of a preset emission valve based on the diffusion topology; and controlling the opening and closing state of the preset emission valve according to the control priority to ensure that the concentration of the odor pollutants meets a preset concentration condition. This method helps improve the prediction accuracy of the diffusion path of gaseous pollutants.

The utility model discloses a gaseous pollutant monitoring devices of semiconductor clean room gathers sample gas through the gas collection subassembly of setting in semiconductor dustless room, and the anion and cation in sample gas are dissolved as sample solution through the impact bottle, and the standard solution of different concentration gradient is diluted through the standard solution dilution subassembly, and the ion chromatography analyzer is through the responsivity of different concentration gradient standard solution to the anion and cation in sample solution, and establishes standard curve and carries out quantitative analysis, and calculates the concentration of anion and cation, realizes the monitoring to the gaseous pollutant that possibly exists in semiconductor clean room, and the equipment short circuit risk that the sample solution in impact bottle caused is effectively prevented through setting up the anti -suck back subassembly of the application, and the anti -suck back subassembly is directly set up in impact bottle, and compared with setting up anti -suck back bottle alone, saves material piece, and the anti -suck back effect is better, and the equipment is not easily affected by short circuit, prolongs the service life of equipment.

The utility model relates to a sampling device capable of synchronously collecting various gaseous pollutants in the atmosphere, which comprises a sucking pump, an air inlet of the sucking pump is connected with a three-way pipe through a pipeline, and one air inlet of the three-way pipe is sequentially connected with a two-way valve, a first flow meter and a first absorption bottle through a pipeline. The other air inlet of the three-way pipe is connected with a three-way valve through a pipeline, one air inlet of the three-way valve is sequentially connected with a second flow meter and a second absorption bottle through pipelines, and the other air inlet of the three-way valve is sequentially connected with a third flow meter and a third absorption bottle through pipelines. Three pipelines are constructed through the common three-way pipe and the three-way valve, the structure is simple, materials are convenient to take, the three pipelines are controlled through the two-way valve and the three-way valve, one to-be-detected gas pollutant can be independently collected, multiple to-be-detected gas pollutants can also be synchronously collected, operation is easy, and the collection efficiency is high.

The invention discloses a device and a method for detecting gaseous pollutants volatilized by a tire, and solves the problems that in the prior art, the detection of the gaseous pollutants does not aim at a single object of the tire, and the simulation of a real tire use environment cannot be realized. The tire volatile gaseous pollutant detection device has the beneficial effect that quantitative measurement of the tire volatile gaseous pollutant can be singly realized, and the specific scheme is as follows: the tire volatile gaseous pollutant detection device comprises a workbench, a supporting frame detachably supports a tire, a sealing cover covers the tire and is in sealing connection with the workbench, and a main control unit is arranged at the position of the workbench; the background environment simulation unit is connected with the main control unit, is supported by the sealing cover or the workbench, can continuously introduce simulation gas into the sealing cover, can simulate sunlight, can heat and refrigerate, and can release moisture; and a background gas component change curve and a temperature change curve are stored in the main control unit to control the action of the background environment simulation unit.

The invention provides a method and a device for purifying tail gas of a mining diesel vehicle. A method for purifying tail gas of a mining diesel vehicle comprises the steps of high-gravity field purification and non-thermal plasma purification, the high-gravity field purification process comprises the steps that a thiol surfactant is added into an aqueous solution, liquid is sprayed to the outer edge of a rotor from an outer water spraying pipe through a centrifugal pump, and the tail gas makes countercurrent contact with the liquid in an outer cavity; particulate matters, sulfides and soluble pollutants in the tail gas are captured by the liquid, and the tail gas which is not captured and absorbed is dried and then is subjected to non-thermal plasma purification. According to the purification method, particulate matter is removed through high gravity field pretreatment, the burden of a follow-up non-thermal plasma technology catalytic system is reduced, and the gaseous pollutant treatment efficiency of the purification method is improved. Sulfides are effectively removed through high gravity field pretreatment, the sulfur resistance of the catalyst is improved, and the service life of the catalyst is prolonged.

The utility model belongs to the technical field of environmental protection equipment, and relates to an asphalt fume waste gas treatment system. The treatment system comprises a circulating dust removal reaction device for filtering asphalt smoke and particulate pollutants and a heat storage combustion device for combusting gaseous pollutants, the circulating dust removal reaction device comprises a venturi reactor, the output end of the venturi reactor is connected to the input end of an ascending pipeline reactor, the output end of the ascending pipeline reactor is connected to the input end of a filter, and the output end of the filter is connected to a heat storage combustion device; the heat storage combustion device comprises a combustion chamber and a plurality of heat storage chambers, and gaseous pollutants enter the combustion chamber to be combusted after being preheated through the heat storage chambers. According to the system, a dry-process circulating dust removal and heat storage combustion process is adopted, so that the problem of sewage generated by conventional wet-process asphalt fume treatment is effectively solved, and the asphalt fume can be effectively removed.

The utility model discloses smelting tail gas treatment equipment, and relates to the technical field of tail gas treatment, the smelting tail gas treatment equipment comprises a tail gas treatment tower, the top of the inner wall of the tail gas treatment tower is rotatably connected with a rotary spraying head, the bottom surface of the rotary spraying head is fixedly connected with a linkage rod, and the outer wall, close to the bottom end, of the linkage rod is fixedly connected with a rotary dust catching net; an adaptive groove is formed in the end, away from the linkage rod, of the rotary dust catching net, and a spring telescopic rod is movably and fixedly connected to the inner wall of the adaptive groove. According to the utility model, the rotary spraying head is matched with the cooling liquid, so that the temperature of tail gas can be reduced, part of water-soluble pollutants can be dissolved, and gaseous pollutants can be condensed. The rotary dust catching net can catch large particles in the rotating process, stir airflow to raise small particles and then intercept the small particles again, the dust catching area can be adjusted through centrifugal force, meanwhile, the vibration filter net further conducts blocking and filtering, the tail gas purification efficiency is greatly improved through cooperation of multiple links, and the content of pollutants in tail gas is effectively reduced.

The invention discloses a hazardous waste waste gas treatment spray tower, belongs to the technical field of spray towers, and aims to solve the problems that a large amount of waste gas is not in full contact with spray liquid in the rising process and the waste gas is wasted because the waste gas rises in an irregular diffusion manner, the spray range of a fixed spray assembly is limited and the spray liquid only can cover a local area in the tower. The spraying tower comprises a spraying tower body, a gas inlet piece is arranged on one side of the spraying tower body, a liquid storage piece is installed in the spraying tower body, the gas inlet piece communicates with the liquid storage piece, a first driving piece is installed in the liquid storage piece, and a plurality of swing pieces are further installed in the liquid storage piece; the three-stage treatment mode of pre-washing of the liquid storage part, cyclone separation of the spiral Venturi tube and precise coupling of rotary spraying is adopted, full-coverage removal of large-particle-size particles, fine particles, viscous glue mist and water-soluble gaseous pollutants is achieved, and compared with a traditional fixed spraying technology, the removal rate of the fine particles and the gaseous pollutants is increased.

The invention belongs to the technical field of microorganism immobilization, and particularly relates to a preparation method of hydrogel microspheres loaded with microorganisms to realize gas-liquid interface exposure. The hydrogel microsphere is of a core-shell structure and comprises core hydrogel containing nutrient substances, a polyelectrolyte layer located on a core-shell interface and an outer hydrogel shell used for immobilizing microorganisms. Stable construction and consistency control of the microsphere structure are realized in the core-shell assembly process; under the action of gaseous pollutant exposure and osmotic pressure, the outer-layer hydrogel shrinks and forms a film structure, so that microorganisms are stably distributed and are continuously in a gas-liquid interface exposure state; the core hydrogel continuously releases water and nutrient substances to the shell layer, the growth and biological functions of immobilized microorganisms under the semi-exposure condition are maintained, the polyelectrolyte layer limits the microorganisms from migrating to the core, and the stability of the exposed state of the microorganisms is guaranteed. The hydrogel microspheres have good optical transparency and microorganism loading consistency, and are suitable for in-situ detection of the toxic effect of gaseous pollutants.

A head assembly is configured to be mounted in a combustion reactor for treating gaseous contaminants, the head assembly including an upper cover assembly, one or more pilot conduits, a pilot flame spout, and one or more fuel spouts. The upper cover assembly is arranged on a thermal reaction area and comprises a top plate, a middle plate and a bottom plate. The guide pipeline is configured to guide an effluent from a semiconductor process, and the guide pipeline passes through the top plate, the middle plate and the bottom plate to guide the effluent to the thermal reaction area. The guiding flame nozzle penetrates through the top plate, the heat insulation object and the middle plate and is communicated with the thermal reaction area through the first opening. The fuel nozzle penetrates through the top plate, the heat insulation object and the middle plate and is communicated with the thermal reaction area through the second opening.

The utility model provides a kind of multifunctional bionic ecological living space device, belong to indoor environment regulation technical field, disclose a kind of multifunctional bionic ecological living space device, to solve the problems such as the insufficient treatment of gaseous pollutants, easy secondary pollution, poor temperature and humidity adjustment of existing air purifier / fresh air machine.The device includes fresh air system (including fresh air motor, fresh air inlet, fresh air outlet), exhaust system (including exhaust fan, exhaust inlet), heat recovery system (heat exchange core), filtration group system (high efficiency filtration, exhaust primary efficiency filtration), negative oxygen ion assembly (negative ion generator module), sensing component (sensor module), sterilization system (ultraviolet lamp) and auxiliary heating device (PTC heater).Through multi-system cooperation, air purification, temperature and humidity regulation, sterilization, heat recovery and bionic environment creation are realized, and indoor living comfort and health are improved.

In certain exemplary embodiments, an air purifier comprises a housing defining an enclosure and having an air entrance and an air exit; a particulate filter; a NCCO filter material configured to adsorb and decompose at least one gaseous pollutant; an AOG configured to generate at least one oxidant; an oxidant remover configured to remove at least one oxidant; a fan unit configured to generate airflow from the air entrance to the air exit; wherein the particulate filter, the NCCO filter material, the AOG, the oxidant remover and the fan unit are positioned within the enclosure such that during operation, a flow of air passes from the air entrance to the air exit through the particulate filter and the NCCO filter material along a direction of the flow of air. In certain embodiments, the air purifier may ensure safety to users while efficiency in removing contaminants can be greatly improved.

A filter unit for removing gaseous compounds (NOx, SOx, VOC, CO etc.) as well as bacteria and viruses from air, an arrangement for reducing the pollutant content of the air in an interior, in particular a motor vehicle interior, and a method for removing gaseous pollutants as well as bacteria and viruses from the air fed into an interior, in particular a vehicle interior.

The utility model relates to the technical field of isooctane production, and provides a sewage aeration treatment device for isooctane production, which comprises a sewage tank and a filter screen plate, one side of the outer surface of the top of the sewage tank is rotatably connected with a sealing cover, and four corners of the bottom of the filter screen plate are fixedly provided with support blocks. The filter screen plate is movably embedded in the sewage tank, and the two connecting plates are fixedly mounted on the two sides of the top of the filter screen plate; the sealing cover is closed, sewage is input into the sewage tank through the water inlet pipe, the sealed sewage tank can prevent isooctane from directly volatilizing and polluting air during aeration treatment, the air blower is started to convey the air into the connecting pipe through the air conveying pipe, and the connecting pipe is fixedly embedded in the lower end of the interior of the sewage tank. A plurality of aeration discs are arranged on the outer surface of the connecting pipe, air is converted into fine bubbles by the aeration discs, and isooctane in the sewage is volatilized in the aeration process to form gaseous pollutants.

The application discloses an atmospheric pollutant in-situ qualitative and quantitative detection system and a detection method. The system comprises a first-stage vacuum system, a second-stage vacuum system and a third-stage vacuum system which are connected in sequence through differential holes. The first-stage vacuum system comprises an aerosol particle focusing inlet structure for forming a collimated particle beam from aerosol particles in a sample and a first-stage vacuum cavity. The second-stage vacuum system comprises a second-stage vacuum cavity and a second-stage vacuum pump. A diameter measuring module and an optical multi-cell module are arranged in the second-stage vacuum cavity. The third-stage vacuum system comprises a third-stage vacuum cavity and an aerosol particle spectrum / mass spectrum detection unit. The application can realize synchronous in-situ online qualitative and quantitative detection of aerosol particles and gaseous pollutants.

The invention discloses a natural gas power plant flue gas on-line detection device and system, and the device comprises a cabinet body, the front surface of which is connected with a cabinet door through a hinge; a drawable functional frame is arranged in the cabinet body, a limiting assembly is further arranged on the rear side of the interior of the cabinet body, and the limiting assembly is composed of a limiting piece and a clamping piece; wherein one side of the functional frame is semi-wrapped and limited by the limiting piece, and the clamping piece is clamped with the inner wall of the other side of the functional frame; through the design of the invention, the drawable functional frame is additionally arranged in the cabinet body, the functional frame supports the overall outward stable drawing, and in an equipment assembly stage, a technician can draw the functional frame to an open area outside the cabinet at first and then pull the functional frame out of the cabinet; independent installation and circuit pre-connection of functional modules such as the gaseous pollutant monitoring unit, the particulate matter sensor and the data acquisition module are completed in sequence, and high-precision butt joint operation in a narrow cabinet body is avoided.

Vehicle air pollution reduction system, comprising: a housing configured to be mounted externally on a vehicle and drawing in ambient air through an inlet; a cold catalyst filter within the housing configured to remove gaseous pollutants and volatile organic compounds from the air; an activated carbon filter connected downstream of the cold catalyst filter and configured to capture particulate matter, gases, and carbon monoxide; a HEPA filter connected to the activated carbon filter and configured to capture micrometer-sized particles, including PM2.5 and PM10; an antibacterial filter positioned downstream of the HEPA filter and configured to capture bacteria for improved hygiene; an anion purification filter following the antibacterial filter and configured to ionize and agglomerate airborne particles;a UV-C light integrated into the filters and configured to disinfect by inactivating microorganisms; an outlet opening connected to the filters and configured to release purified air into the environment; the housing being connected via a port.

This invention discloses a device for treating air pollution, relating to the field of air pollution technology. It includes a fixed mounting base plate, with a filtration box mounted on top of the base plate. The front end of the filtration box is equipped with a drain plug, an exhaust pipe, and an air inlet hood. The upper interior of the filtration box contains a particulate filter plate and a gaseous pollutant adsorption plate for air filtration. A storage tank is installed at the rear end of the filtration box. Movable liquid collection plates connected to the storage tank are located at both ends of the filtration box, and atomizing nozzles are installed inside the movable liquid collection plates. This invention addresses the problem that conventional treatment devices mostly only adsorb and then filter gases, which, while effective for most pollutants, increases the consumption of filter material. Furthermore, existing treatment devices are limited by their single-technology limitations and lack the ability to synergistically control pollutants.

The utility model discloses a surface pollution decontaminating and cleaning device for a radioactive substance storage and transportation container. The surface pollution decontaminating and cleaning device comprises a cleaning machine frame, a cleaning machine box, an outer wall cleaning spray gun, an inner wall cleaning spray gun, a dry ice cleaning machine, a dust collection fan and a container cleaning base table. The cleaning machine box is installed on the cleaning machine frame. The container cleaning base table is connected to the cleaning rack in a sliding mode and can be switched between moving in or moving out of an inner cavity of the cleaning machine box. The container cleaning base table is used for loading a cleaned container and can drive the cleaned container to rotate. The outer wall cleaning spray gun and the inner wall cleaning spray gun are arranged to spray dry ice powder output by the dry ice cleaning machine to the outer wall or the inner cavity of the cleaned container, and radioactive pollutants on the surface of the cleaned container are converted into gaseous pollutants; the gas pollutants are output in a centralized manner through the dust collection fan; and the water is filtered and collected through the filter element, so that secondary pollution to the outside is effectively avoided.

The invention discloses a hydrophilic carbon material for removing CS2 in organic solid waste gasified fuel gas as well as a preparation method and application thereof, and relates to the technical field of organic solid waste gasified fuel gas. The preparation method comprises the following steps: firstly, dropwise adding a sodium alginate solution into a Fe < 3 + > salt solution, freezing, drying, and calcining and carbonizing at a high temperature in a nitrogen atmosphere to obtain a carbon material; mixing polyvinyl alcohol and sodium dodecyl benzene sulfonate to prepare a homogeneous water phase, performing ultrasonic treatment on the homogeneous water phase, trimethylolpropane trimethacrylate, acrylonitrile and benzidine to form a homogeneous organic phase, combining the homogeneous organic phase with a carbon material, reducing by red aluminum, and drying by a drying oven to obtain the composite material. The hydrophilic carbon material prepared by the invention can adsorb and remove gaseous pollutant CS2 in organic solid waste gasified fuel gas under the conditions of room temperature and high space velocity, and the removal efficiency is excellent.

The invention relates to a nitrogen oxide and ammonia gas pollutant cooperative treatment control system and method. Modules in a nitrogen oxide and ammonia gas pollutant cooperative treatment electronic control device in the system comprise a denitration outlet NOx signal preprocessing module, a denitration needed NH3 equivalent calculation module and a cascade control module. The cascade control module comprises a main controller, a cascade control signal distributor and m auxiliary controllers; the main controller outputs a control signal to the cascade control signal distributor after operation, and the cascade control signal distributor outputs m control signals to the corresponding auxiliary controllers after operation; wherein the m auxiliary controllers correspond to the m reducing agent adjusting main valves respectively. According to the system and the method, the stability of the NOx value of the environment-friendly exhaust port is cooperatively controlled, the monitoring value of the environment-friendly monitoring port is stable to achieve a target value under the condition of low energy consumption, meanwhile, the ammonia gas consumption is reduced to the maximum extent, and ammonia escape is reduced.

The ecological fresh air system comprises a machine cabinet, the inner wall of the machine cabinet is fixedly connected with a first partition plate and a second partition plate, the machine cabinet is sequentially divided into a multifunctional chamber, a filtering chamber and a heat exchange chamber from left to right through the first partition plate and the second partition plate, and the inner wall of the multifunctional chamber is fixedly provided with a humidifier and a fan; and a total heat exchange core is fixedly mounted in the heat exchange chamber. According to the system, the total heat exchange technology is introduced, and the energy recovery rate gt in exhaust air is recovered while fresh air is introduced; the energy consumption burden of air conditioners / heaters in winter and summer is obviously reduced; the operation cost is reduced to the maximum extent while efficient purification is guaranteed, and the device is suitable for being used in families or office scenes for a long time. The soilless culture technology is utilized, plants (such as scindapsus aureus, spathiphyllum and hedera helix) and rhizosphere microorganisms of the plants are efficiently purified, gaseous pollutants such as formaldehyde and benzene are deeply decomposed, meanwhile, oxygen and negative ions are released, and the air quality can be improved.