48results about How to "Fully decontaminated" patented technology

The invention discloses a small oscillating grain hulling machine, which comprises a frame, an oscillating mechanism, a screening mechanism and an air outlet mechanism. The air outlet component and the damper component drive the vibration component to run through the driving component. After the vibration component pushes the screening net in the screening component to a high place, the screening net drops rapidly by gravity, throws the grain on the screening net into the air, and is removed by the wind component. Light impurities such as chaff in the grain, and then the grain is returned to the screening net, and the granular impurities in the grain are screened and removed by the screening net. Repeat this process to completely remove the chaff impurities and granular impurities in the grain, and improve the screening efficiency.

The invention relates to a multi-layer air cleaning device for an air inlet pipeline of a vehicle. The multi-layer air cleaning device comprises a pipeline body (10), a mounting pad (11), an air inlet plate (9) connected with one end of the pipeline body (10), and a multi-layer filtering device located inside the pipeline body (10), wherein the multi-layer filtering device comprises a gauze module (1), a particulate matter filtering module (2), a heat recovery energy storage filtering module (3), a gas odor removal module (4), a photocatalyst stimulation disinfection module (6), synthetic fiber filter element modules (5) located on the two sides of the photocatalyst stimulation disinfection module (6) respectively, an active nanometer anion generating module (7) and a ventilation port control panel (8). The multi-layer air cleaning device can be used in the air inlet pipeline of the vehicle or at the position of an air inlet of the vehicle to purify air entering the vehicle. By the adoption of the multi-layer air cleaning device, air entering the vehicle can reach the standard through purification when outdoor PM2.5 or PM10 peak value exceeds the standard.

The invention discloses a device for treating petroleum-contaminated soil. The device comprises a base plate, a supporting plate, a recycling device, a frame device, a cleaning device, a feeding device, a pushing device, a smashing device and an air cylinder device. The base plate is provided with a first supporting rod, a second supporting rod, a first slant rod, a second slant rod, a receiving box and a first abutting rod. The supporting plate is provided with first through holes, a first fixing frame, a first filter net, third slant rods, a first vertical rod, a first bent plate and a first support. The recycling device comprises a first rotating disc, a filter ring, a first fixing ring, a first rotating shaft, a first motor, a second fixing frame, a first rotating wheel, first distributing blocks and a stopping ring. The frame device comprises a frame body, a handle, a first pipe, a first valve, a first feeding hopper, a first slant plate, first stopping blocks, a first holding rod and a first fixing block. The cleaning device comprises a cleaning frame, a second pipe, a second valve, a box body, a first cover plate and a second holding rod. By means of the device, the soil contaminated by petroleum can be rapidly and effectively treated.

The invention discloses an onshore buffer zone. The onshore buffer zone comprises vegetation slope protection zones including a first-stage vegetation slope protection zone, a second-stage vegetationslope protection zone...an Nth-stage vegetation slope protection zone, wherein N is a positive integer not smaller than 2, and an inter-gravel contact oxidation zone is arranged between every two adjacent vegetation slope protection zones; plants are planted on the vegetation slope protection zones; each inter-gravel contact oxidation zone comprises a filtration layer made of gravel, a purification layer made of volcanic rock and an adsorption layer made of coal cinder in the water flow direction; ecological corridors are arranged in the inter-gravel contact oxidation zones; adjacent inter-gravel contact oxidation zones are arranged in a staggered manner. A vegetation slope protection-inter-gravel contact oxidation zone-vegetation slope protection type construction mode is adopted, and thepollution absorption and water purification effects are improved through multi-stage structure arrangement.

The invention discloses a sewage treatment device which comprises a sewage storage box, a sediment box, a first filtering box, a second filtering box, a disinfecting tank and a clean water tank, wherein the sewage storage box is connected with the sediment box through a water outlet pipe; the sediment box is connected with the first filtering box through a guide pipe; the first filtering box, the second filtering box, the disinfecting tank and the clean water tank are connected with each other through the water outlet pipe; a separating plate is arranged at the top of the sewage storage box; a stirrer is mounted at the bottom end of the sediment box; a drug-adding device is arranged at the upper end of the sediment box; a water pump is arranged on the guide pipe; a first filtering plate and a second filtering plate are arranged on the first filtering box; a disinfecting gas generator is arranged at the upper end of the disinfecting tank. According to the sewage treatment device, the sediment box, the first filtering box, the second filtering box and the disinfecting gas generator are used for performing sediment and repeated filtering treatment, so that the sewage is sufficiently purified; the structure is simple; the cost for treating the sewage is low; the sewage treatment device is fit for various places.

The invention discloses an industrial solid waste recycling cyclic utilization device, and belongs to the technical field of waste treatment. A screening pulverizing element, a mixing impurity removing element, a waste drying element, a pyrolysis furnace, a dust removal device and a power source are mainly included. The mixing impurity removing element is used for adding related reagents into crushed industrial solid waste for pretreatment, and part of organic pollutants in the waste are removed; and in addition, the pyrolysis furnace is utilized for conducting pyrolysis treatment on the pretreated waste, surplus organic matter in the waste is removed, and after pyrolysis gas generated in the pyrolysis process is subjected to purification treatment through the dust removal device, combustible gas and biological oil are obtained, carbon high-quality fuel is generated due to pyrolysis, and the above products can be repeatedly utilized. Recycling treatment of the industrial solid waste isachieved, energy saving and environment protection are achieved, and pollution caused to the environment from the industrial waste is avoided.

The invention provides a carbon nanotube fiber spiral tube aerial drinking water self-power supply system and device, which comprises: a carbon nanotube fiber spiral tube agglutination drinking water and telescopic generator, a wind-driven generator, a photovoltaic generator, an intelligent controller, a battery and circuit, and a drinking water supply tank, wherein the drinking water supply tank is equipped with a drinking water supply tank valve switch; the wind-driven generator, the photovoltaic generator, the intelligent controller, the battery, the drinking water supply tank, and the drinking water supply tank valve switch are all assembled over the earth's surface; the carbon nanotube fiber spiral tube agglutination drinking water and telescopic generator is assembled at a deep position under the earth's surface; the carbon nanotube fiber spiral tube agglutination drinking water and telescopic generator, the wind-driven generator and the photovoltaic generator are each equipped with a sensor; the carbon nanotube fiber spiral tube agglutination drinking water and telescopic generator, the wind-driven generator, the photovoltaic generator, the sensors, the battery and circuit, and the drinking water supply tank valve switch are all connected with the intelligent controller.

The invention discloses a biological treatment system used for rainwater purification of a sponge city. The biological treatment system is arranged on a road surface and below greening regions of thetwo sides of the road surface, and comprises a settling pond, a water storage pool and a biological purification layer, the settling pond is located under the road surface and used for receiving rainwater which seeps from the road surface and the greening regions, an overflow pipe is arranged inside the settling pond, the water storage pool is communicated with the settling pond through the overflow pipe and used for storing the rainwater which overflows from the settling pond, and the biological purification layer comprises a road surface biological purification layer arranged at the bottom of the road surface and greening region biological purification layers arranged at the bottoms of the greening regions; a water-permeating road surface is adopted as the road surface, and permeable soil is adopted for the greening regions. The biological treatment system has the advantages that the road surface and the greening regions of the city are arranged to be of permeable structures, the rainwater will directly permeate into the ground, no water accumulation on the road surface occurs, convenience is provided for vehicle driving and passerby walking, the rainwater is fully purified during permeating, and the stored rainwater has more purposes.

The invention belongs to the technical field of grain drying equipment, and discloses a grain drying tower with an ozone sterilization function. According to the technical points, the grain drying tower comprises a box body, a partition plate is fixedly mounted between the inner walls of the box body, the partition plate divides the interior of the box body into a disinfection cavity and a drying cavity, and a transmission mechanism is mounted on the box body. Two sets of bearing plates distributed at equal intervals are slidably installed between the side walls of the drying cavity, the bearing plates are used for collecting grains disinfected by the disinfection cavity, a discharging mechanism is installed on the surfaces of the bearing plates and comprises a discharging part and a control part, and the discharging part is used for controlling the grains on the bearing plates to evenly fall off. The control part is connected with the discharging part and used for adjusting the falling speed of the grains, and a drying assembly matched with a rotating rod is installed in the box body.

The invention provides an automobile exhaust treatment device with a waste heat using function, and belongs to the technical field of environmental protection purification. The automobile exhaust treatment device comprises a waste heat using device and a purification treatment device; a heat collecting plate is arranged inside a water storage tank; the upper end of a filter tank is connected witha gas outlet plate through an exhaust pipe, and the gas outlet plate is arranged in an inner cavity of a purification container; and the left end of a catalytic converter is connected with the upper portion of the right side of the purification container through an exhaust pipe, and the right end of the catalytic converter is connected with a coiled pipe through an exhaust pipe. According to the automobile exhaust treatment device, a copper pipe is wound around a heat conducting pipe, the two ends of the copper pipe are arranged in openings in the bottom of the water storage tank, and the functions of recycling the waste heat and being used for heating the water storage tank are achieved; a diffuser is arranged on the lower face of the gas outlet plate in a connected manner, the diffuser enables automobile exhaust to be diffused in purification liquid through a plurality of through holes, and the function of sufficient in purification treatment is achieved; and the automobile exhaust treatment device has the beneficial effects of being simple in structure, high in practicability and good in exhaust purification effect.

The invention relates to the technical field of sewage treatment, and discloses a printing and dyeing wastewater pollution prevention and treatment device. The printing and dyeing wastewater pollutionprevention and treatment device comprises a cabinet body and a base, the bottom of the cabinet body is connected with the top of the base, a stirring tank is fixedly connected to the interior of thecabinet body, the portion, located above the stirring tank, in the cabinet body is provided with a filter, and a feeding pipe is connected to the left side of the top of the cabinet body. According tothe printing and dyeing wastewater pollution prevention and treatment device, the filter is adopted for primary filtration, and stirring rods are driven by a stirring motor to rotate, so that mixingplates are driven to stir sewage in which chemicals are added; the purified sewage enters a sedimentation tank for sedimentation, water in a water tank is detected by a detector, if the water does notreach the standard, through the work of a water pump, the water in the water tank enters the stirring tank for stirring and purification through a water inlet pipe and a water outlet pipe, the sewageis fully purified, pollution prevention and treatment are conducted, and the treatment effect is good.

The invention provides a device for photocatalytic degradation of organic waste gas and an application method of the device. The device comprises a first-stage catalytic box body and a second-stage catalytic box body, wherein at least two porous carrier plates containing photocatalysts are arranged in an inner cavity of the first-stage catalytic box body, and the at least two porous carrier platescontaining the photocatalysts are arranged in parallel in a staggered mode in the flowing direction of the organic waste gas, so that a zigzag flow channel can be formed; xenon lamps or ultraviolet lamps are arranged on two sides of the porous carrier plates; and at least one adsorption bed layer is arranged in the inner cavity of the second-stage catalytic box body along the flowing direction ofthe organic waste gas. The lamps are turned on, the organic waste gas is introduced into a first gas inlet of the first-stage catalytic box body, and the purified organic gas flows out from a secondgas outlet of the second-stage catalytic box body, so that photocatalytic degradation of the organic waste gas is completed. According to the device, the retention time of VOCs passing through the photocatalysis box bodies is effectively prolonged, conditions are created for photocatalysis reactions, and the degradation effect on VOCs is better and more sufficient.

The invention provides exhaust gas purification treatment environmental protection equipment. The equipment comprises an exhaust gas removing pipe and an exhaust gas purification pipe, the exhaust gasremoving pipe is vertically arranged, the exhaust gas purification pipe is horizontally arranged and connected with the upper end of the exhaust gas removing pipe, and the exhaust gas removing pipe is connected with the exhaust gas purification pipe to form an L-shaped structure; the lower end of the exhaust gas removing pipe is connected with a suction pipe, the lower end of the exhaust gas removing pipe is arranged to be closed, the bottom face of the exhaust gas removing pipe is arranged to be lower than an air outlet of the suction pipe, the bottom face of the exhaust gas removing pipe isan inclined plane, a recycling opening is formed in the bottom of the exhaust gas removing pipe, the upper end of the suction pipe penetrates into the exhaust gas removing pipe from the center of thebottom face of the exhaust gas removing pipe, and the exhaust gas removing pipe is internally provided with a baffle plate which is a circular board. According to the exhaust gas purification treatment environmental protection equipment, exhaust gas in the working environment can be removed, and dust particles in the exhaust gas and hazardous gas such as malodorous gas can be purified.

The invention relates to the technical field of decontamination, and particularly discloses a decontamination system for a mobile hospital. The system comprises a decontamination chamber and a decontamination spray head arranged in the decontamination chamber, and further comprises a reminding module used for sending a standard decontamination posture reminder before decontamination, an acquisition module used for acquiring the current posture of a decontamination person, and a control module used for acquiring the current posture of the decontamination person from the acquisition module, matching the current posture with the standard decontamination posture, and controlling the decontamination spray head to be opened when matching is successful. By adopting the technical scheme, sufficient decontamination can be carried out.

According to the method for recycling the foundry waste sand based on the vertical energy-saving roasting furnace, hot-method regeneration and wet-method mechanical regeneration are combined, and meanwhile, an abrasive material is added into the waste sand during hot roasting, so that a certain grinding effect is achieved; chemical dissolution, burning and friction effects are combined together to achieve the effect of well removing surface resin and inorganic impurities of the mixed casting waste sand, and the recovery rate is high. The method further optimizes the heat cycle during roasting, and is energy-saving, environment-friendly and efficient. A novel vertical energy-saving roasting furnace is adopted in the roasting process, a unique secondary roasting technology is adopted, tail gas and materials are subjected to secondary roasting, waste heat can be efficiently utilized through secondary roasting, energy consumption is low, the quality of produced regenerated sand is excellent and uniform, and the waste sand regeneration and reuse effect is remarkable.

The invention relates to the technical field of moxibustion device, in particular to a novel smokeless moxibustion device. The device comprises a smoke hood, a retractable smoke exhaust pipe, a control box, rollers, a control button area, a CPU, a controller, a lifting motor, a telescopic rod, a smoke filter box, a filter net, active carbon material, gas inhaling device, an intercom device, a mobile panel, a lower panel, a moxibustion hole, a smoke control hole, a temperature sensor and a power source. Four rollers are positioned at four corners of the control box respectively. The smoke hood is positioned above the middle of the control box, and is connected with the control box through the retractable smoke exhaust pipe. The intercom device is located at the middle surface of the retractable smoke exhaust pipe. The control button area is placed on the outer side of the control box. The filter box is located in the control box. The device is easy to move and operate. The mobile panel can adjust the temperature in the smoke hood. The intercom is convenient for patients to call medical assistance. The smoke filter box can filter and purify the waste smoke. During use the control box is placed under a bed body to save space. The device is highly practicable and applicable.

The invention relates to a system for breeding acrossocheilus fasciatus and purifying and utilizing tail water. The system comprises a culture pond and a rice field. The system is characterized in that 1, a horizontal fishing net is installed in a breeding pond; 2, the area of the rice field is 80 times more than the area of the breeding pond, a sedimentation pond is arranged in the rice field, and the area of the sedimentation pond is 1.5-2 times the area of the breeding pond; shrimp ditches are also arranged in the rice field and are used for breeding silver carp, bighead carp, plagiognathops microlepis and crayfish. The acrossocheilus fasciatus is placed in a breeding pond on the upper portion of the fishing net, residual baits and fish manure sink into the bottom of the pond through the fishing net and enter the sedimentation pond along with water flow, and large-particle substances in the residual baits and the fish manure are precipitated in the sedimentation pond, so that the residual baits and the fish manure are convenient to collect and are supplied for farmland use; small granular materials enter the rice field and the shrimp ditches along with the water flow, and can beeaten by the plagiognathops microlepis and the crayfish; and nitrogen and phosphorus easily dissolved in a water body can be absorbed by growing rice and waterweeds, so that the breeding tail water is fully purified. On the one hand, the invention provides a method for breeding the acrossocheilus fasciatus, and on the other hand, it can be ensured that the discharged breeding tail water can reachthe standard.

The invention discloses integrated equipment for industrial waste gas treatment, and particularly relates to the related technical field of industrial waste gas treatment.The integrated equipment comprises a gas inlet pipe, a filtering structure is fixedly installed at one end of the gas inlet pipe and comprises a filtering box, and a clamping plate is fixedly connected to the inner wall of the filtering box; a movable top plate is movably arranged on one side of the clamping plate, a filter cartridge assembly used for filtering waste gas is arranged in the movable top plate, a sealing plate is fixedly connected to one side of the movable top plate, and a movable door is fixedly connected to one side of the sealing plate. Smoke impurities in waste gas are filtered and adsorbed through the filtering structure and the adsorption structure, then the waste gas is combusted and purified through the combustion chamber assembly, finally the purified waste gas is filtered and discharged through the filtering tower, the waste gas is conveniently treated and discharged in a centralized mode, and meanwhile the filtering structure and the adsorption structure are used for replacing a spraying device. And generation and treatment of wastewater are avoided, so that the waste gas treatment cost is reduced.

The invention discloses an environment-friendly treatment device for industrial-grade flue gas. The environment-friendly treatment device for the industrial-grade flue gas designed by the invention can be used for fully purifying dust impurities in the industrial flue gas by arranging an absorption treatment box, an impurity filtering mechanism, a regulation and control mechanism and a positioning and locking mechanism, so that the working quality of purification treatment is ensured; through the arrangement of the impurity filtering mechanism, impurity precipitates subjected to purification treatment can be well collected and removed, it is ensured that the impurity precipitates cannot be accumulated in equipment and cannot affect work of the equipment; and through the linkage effect between the arranged regulation and control mechanism and the positioning and locking mechanism, corresponding adjustment can be performed according to actual purification treatment requirements of the industrial flue gas, so that the purification treatment work is optimized, and the working economic benefits are improved.

The invention provides an integrated device for photocatalytic oxidation treatment of high concentration organic wastewater, comprising a tank body, a water inlet pipe and a tank cover, wherein the right side of the water inlet pipe is fixed to the left side of the tank body; the tank cover is installed at the top of the tank body. The integrated device can ensure that wastewater is not doped withexcessive impurities, prevents the impurities from affecting the purification quality and efficiency of organic wastewater, prevents normal purification from being affected by equipment blockage, ensures the efficiency of wastewater purification and the full utilization of energy, avoids waste of energy, improves purification efficiency, makes wastewater purification more thorough, greatly improves the wastewater purification quality, allows maintenance workers to clean impurities conveniently, prevents the normal operation of equipment from being affected by the blockage of a large amount ofimpurities in the tank body, and improves the stability of equipment operation.

The invention discloses an atmospheric pollution prevention and control device for chemical flue gas. The device comprises a box body, a flue gas inlet pipe and an exhaust pipe, the flue gas inlet pipe is arranged on the left side of the box body, the flue gas inlet pipe penetrates through the side wall of the box body and is connected to a first filter box in the box body, a first filter screen is installed in the first filter box, the right side of the first filter box is connected with a cooling box through a first rectangular pipeline, and the right side of the cooling box is connected with a second filter box through a second rectangular pipeline. According to the invention, flue gas is preliminarily filtered through the first filter screen, the cooling box cools the flue gas, the second filter screen finely filters the flue gas, the chemical reaction treatment box absorbs and decomposes harmful substances in the flue gas, and the solenoid valve, the second sucking pump, the thirdconnecting pipe and the second connecting pipe are matched to carry out secondary chemical reaction treatment on the flue gas which does not reach the standard, therefore, the flue gas is fully purified, pollution control is carried out, and the treatment effect is good.

The invention discloses industrial dry flue gas desulfurization, denitrification and dust removal integrated purification equipment which comprises an outer shell, wherein the outer shell is installed in a flue gas treatment workshop; a cooling water tank, wherein the interior of the cooling water tank is filled with cooling water; a dust shaking-off device which is rotationally mounted in a dust filtering cylinder; a sealing cover plate which is connected to the interior of a communicating channel in a clamping manner; and a desulfurizer which is mounted and connected to the upper end of the interior of the outer shell. According to the industrial dry type flue gas desulfurization, denitrification and dust removal integrated purification equipment, flue dust carried in flue gas is conveniently and fully collected and treated before flue gas treatment, the later desulfurization and denitrification work progress is prevented from being influenced, heat carried in the flue gas is conveniently and fully absorbed and collected during flue gas treatment, meanwhile, when the flue gas is subjected to desulfurization and denitrification, the flue gas can be in full contact with the purification device conveniently, so that the working efficiency is improved.

The invention discloses a circulating water quality control treatment method and system, and relates to the technical field of seawater cooling utilization, and the method comprises the following steps: S1, adding an oxidizing bactericide into a pump suction inlet of a circulating water pool, continuously adding for 24 hours, the oxidizing bactericide being sodium hypochlorite; s2, sampling at regular time and detecting the content of residual chlorine; s3, if the content of residual chlorine detected in the step S2 exceeds the range, the adding concentration of sodium hypochlorite is changed; s4, regularly adding a non-oxidizing bactericide, and stopping adding the oxidizing bactericide before adding the non-oxidizing bactericide; and S5, after the non-oxidizing bactericide is added, continuously adding the oxidizing bactericide. The quality of the circulating water can be controlled by regularly adding the oxidizing bactericide and the non-oxidizing bactericide into the circulating water, and meanwhile, the reagents can be automatically and quantitatively added by adopting a specific control process, so that sufficient purification treatment on the circulating water can be ensured.

The invention discloses a multilayer waste gas purification device. The device comprises a body, wherein the body comprises a gas inlet, a gas outlet, spray pipes and a liquid storage tank; the gas inlet is formed in the bottom of the body; a layer of gas flow equalization plate is arranged inside the body; a first filter layer is arranged above the gas flow equalization plate; a plurality of spray pipes are arranged above the first filter layer; a second filter layer is arranged above the spray pipes; heating pipes are arranged above the second filter layer; the liquid storage tank is arranged at the bottom of the body and is connected with the body by conduits; the gas outlet is formed at the top of the body. The device has the advantages of reasonable structural design, convenience in use, good purification effects, and the like.

The invention discloses a biological treatment system for rainwater purification in a sponge city. The biological treatment system is arranged on the road surface and under the green areas on both sides of the road surface. The biological treatment system includes a sedimentation tank, a water storage tank and a biological purification layer. The sedimentation tank is located at Directly below the road surface, it is used to receive the rainwater infiltrated from the road surface and the green area. An overflow pipe is provided in the sedimentation tank, and the reservoir is connected to the sedimentation tank through the overflow pipe to store the overflowing rainwater from the sedimentation tank. The biological purification layer includes The pavement biological purification layer at the bottom of the road surface and the green area biological purification layer at the bottom of the green area; the road surface adopts permeable pavement, and the green area adopts permeable soil. The advantage of the present invention is that the urban pavement and the green area are set as permeable structures, the rainwater will directly infiltrate into the ground, there will be no water on the road, it is convenient for vehicles to drive and pedestrians to walk, and the rainwater will be fully purified during the infiltration process treatment so that stored rainwater can be used for a wider range of purposes.

The invention relates to a cooperative combined action small sewage and wastewater treatment device which comprises a first box body, a second box body and a third box body, a plurality of through holes are formed in the tops of the first box body, the second box body and the third box body, and the second box body is located between the first box body and the third box body; the first box body, the second box body and the third box body are each internally provided with a plurality of first bearing plates and second bearing plates, the first box body, the second box body and the third box body are each internally filled with filler, side baffles are fixed to the rear ends of the first box body, the second box body and the third box body, and water outlet holes are formed in the side baffles; and a plurality of biological membranes are arranged on one side of the side baffle. The problems that the sewage treatment effect is poor, simultaneous treatment of a plurality of devices cannot be achieved, and the sewage treatment efficiency is low due to the fact that an existing sewage treatment device often cannot make full contact with the sewage and the sewage is only treated once during sewage treatment are solved.

The invention provides an industrial air filtration and purification device. The industrial air filtration and purification device comprises an air exhausting device (1), a first frame (2), a water pumping device (3), an air spraying device (4), a first pipeline device (5), a first filtration device (6), a second pipeline device (7), a discharging device (8) and a second filtration device (9), wherein the air exhausting device (1) comprises an air exhausting pipe (11), a first draught fan (12), a first valve (13) and a first supporting rod (14); a first through hole (21), a second through hole (22), a third through hole (23), a fourth through hole (24) and a fifth through hole are formed in the first frame (2); a first pipeline (25), a second valve and a first sloping plate are arranged on the first frame (2); and the water pumping device comprises a water pumping pipe, a first water pump and a third valve. The industrial air filtration and purification device has the beneficial effects that smoke dust in power plant workshops can be sucked into the industrial air filtration and purification device, and then fully contacts with spraying purified water, so that lots of impurities in the smoke dust are cleared away.

The invention discloses a device for treating petroleum-contaminated soil. The device comprises a base plate, a supporting plate, a recycling device, a frame device, a cleaning device, a feeding device, a pushing device, a smashing device and an air cylinder device. The base plate is provided with a first supporting rod, a second supporting rod, a first slant rod, a second slant rod, a receiving box and a first abutting rod. The supporting plate is provided with first through holes, a first fixing frame, a first filter net, third slant rods, a first vertical rod, a first bent plate and a first support. The recycling device comprises a first rotating disc, a filter ring, a first fixing ring, a first rotating shaft, a first motor, a second fixing frame, a first rotating wheel, first distributing blocks and a stopping ring. The frame device comprises a frame body, a handle, a first pipe, a first valve, a first feeding hopper, a first slant plate, first stopping blocks, a first holding rod and a first fixing block. The cleaning device comprises a cleaning frame, a second pipe, a second valve, a box body, a first cover plate and a second holding rod. By means of the device, the soil contaminated by petroleum can be rapidly and effectively treated.

The invention discloses a waste gas treatment device for 3D printing, wherein the waste gas treatment device for 3D printing comprises a 3D printer body; a motor is fixedly connected to the side wall of the 3D printer body; the motor is electrically connected with an external controller; a first spring is a compression spring; two transverse plates are symmetrically and fixedly connected to the inner wall of a first barrel body; first sealing strips are fixedly embedded into the side walls of the transverse plates through glue; a three-way pipe is fixedly embedded in a vertical plate, two end openings of the three-way pipe are arranged on the two sides of the vertical plate respectively and communicated with the first barrel body, the top end of the three-way pipe penetrates out of the first barrel body and is in threaded connection with a cover body, the wall thickness of a circular ring is 8 mm-10 mm, the disc is made of aluminum alloy materials, and the model of the motor is BWY27-23-7.5; and the heat dissipation of printing equipment can be assisted while waste gas is fully purified, so that the environment is indirectly protected, the environmental pollution is reduced, the rolling of activated carbon particles can be realized, the activated carbon is fully utilized while the waste gas is fully purified, the utilization rate is increased, and the practical requirements are met.

The invention discloses a sewage treatment system, which comprises a pretreatment system, a biochemical reaction system, a disinfection system and a sludge treatment system, which are successively connected in series through delivery pipes. The pretreatment system comprises a water collection tank, a coarse screen, a fine screen and a sedimentation basin. The biochemical reaction system comprisesa reaction tank, a hydrolysis-acidification tank and a catalytic oxidation tank. The disinfection system comprises a filter tank, a disinfection tank and a water storage tank. The sludge treatment system comprises a sludge tank and a filter press. Through the arrangement of the pretreatment system, the biochemical reaction system, the disinfection system and the sludge treatment system, the four systems cooperate with each other, and chemical treatment and physical treatment are both involved, thereby fully purifying the sewage. The treated sewage can be used for watering green area and pavements for recycling. Therefore, water resources are greatly saved, and environmental pollution is reduced.