523results about How to "Purify thoroughly" patented technology

The invention discloses a method for purifying air by combining adsorption and in-situ heat catalytic oxidation regeneration. The method uses a porous material with adsorption and catalysis functions and a porous material with protective adsorption to adsorb low concentration of formaldehyde and benzene series in the air; when the adsorption of the porous material approaches to saturation, electrical heating is started to activate the catalytic activity of the porous material with the adsorption and catalysis functions, thereby catalytically oxidizing the formaldehyde and the benzene series which are adsorbed on the surface of the porous material into carbon dioxide and water; at the same time, the adsorption capability of the porous material is regenerated; the regenerated porous material is reused for adsorption; thus air purification can be realized through the circulation. The method has the advantages of high efficiency, energy conservation, low cost, no secondary pollution and so on. The method is suitable for purifying air containing the low concentration formaldehyde and the benzene series in a building, a cabin or other restricted spaces.

The invention discloses a sponge city rainwater collecting, purifying and utilizing combination system which comprises a roof rainwater collecting area, a road rainwater collecting area, a greenbelt rainwater collecting area, a water collecting and sand settling tank, a purifying device and an impounding reservoir. An evaporation preventing layer, a soil layer, a water supply layer and a purifying layer are sequentially arranged on the roof rainwater collecting area from top to bottom. Transverse and longitudinal water collecting pipes are arranged in a bottom gravel layer of the road rainwater collecting area. An evaporation preventing layer, a soil layer, a rough sand layer and a purifying layer are sequentially arranged in the greenbelt rainwater collecting area from top to bottom. A filtering grid is arranged in the middle of the impounding reservoir, a water inlet hole and a water overflow hole are formed in the upper portion of the impounding reservoir, and a water drawing pump is arranged at the bottom of the impounding reservoir. The city environment can be greened and beautified, city rainfall flood pressure can be relieved, pollutants in rainwater can be absorbed, water resources can be saved, the rainwater utilization efficiency can be improved, and important reference significance is achieved on sponge city non-point source pollution control and city water shortage relieving.

The invention discloses a method for treating sulfur- and hydrocarbon-containing foul waste gas. The waste gas enters a heat exchanger for cooling, condensed water is separated, the cooled waste gas enters an absorption tower to be absorbed by an absorbent distillate, a fresh absorbent exchanges heat with a rich absorbent discharged by the absorption tower and then is cooled by a cooling system, and the cooled absorbent enters the absorption tower; and the waste gas subjected to absorptive purification enters an adsorption tower for adsorptive purification, the adsorption tower is segmentally filled and respectively filled with silica gel adsorbents and activated carbon adsorbents, and heat exchangers are arranged among the adsorbents in each segment. The method can thoroughly purify the sulfur- and hydrocarbon-containing foul waste gas discharged by chemical engineering storage tanks, refining devices and the like, and has the advantages of simple treatment process and no potential safety hazard.

The invention discloses an alga control method for a freshwater environment based on cultivation of barracudas and mullets, relating to a water treatment method. Aiming at solving the problem that algae can not be stably and thoroughly controlled in a eutrophic fresh water body, the method comprises the following steps: at least introducing one species of estuarine / marine fishes, such as barracudas and mullets which can only be propagated in sea water, and carrying out desalination processing before cultivation to enable the barracudas and the mullets to be adapted to a freshwater living environment, wherein the mesh size in the large water body ensures whether the cultivated fishes can escape; dividing or mixing according to different ages, carrying out culture in enclosure in girds by meshes, and simultaneously cultivating and propagating silver carps, bighead carps, other local fishes and local shellfish; and propagating local common aquatic plants. Thus, the fishes can be fed on the algae in a filter-feeding mode and simultaneously swallow detritus substances, thereby achieving the purpose of thoroughly purifying the water environment. By harvesting the cultivated and propagated aquatic organisms to remove nitrogen / phosphorus nutrients in water and humus in bed material from the water body, the method disclosed by the invention greatly improves the water quality of the cultivation water body.

The invention relates to a dual flue gas purification technology and a purification system thereof in the field of wet flue gas purification. The technology comprises primary wet purification and secondary adsorbing purification, wherein a clean flue gas obtained after raw flue gas is primarily purified enters a clean flue gas channel, and the clean flue gas obtained after the primary wet purification is processed by secondary adsorbing purification. The system comprises a primary wet purification device and a secondary adsorbing purification device, wherein the primary wet purification device comprises a raw flue gas channel, an adsorption tower and a clean flue gas channel which are sequentially connected with one another; the secondary adsorbing purification device is respectively connected with the clean flue gas channel and the adsorption tower. The technology disclosed by the invention is based on an optimized design, and stable in system operation, pollutants such as gas liquid slurry materials, dust, aerosol and the like mixed in the clean flue gas can be effectively controlled, especially, the substances such as sulphurous acid nitrite and the like forming particulate matters (PM)2.5 can be effectively prevented from entering the atmosphere, the environmental effect is significantly enhanced, secondary pollution of the clean flue gas to the atmosphere caused is effectively prevented, and the dual flue gas purification technology and purification system thereof are applicable to popularization and application in the field of flue gas purification.

The invention relates to the sterilization field, in particular to a sterilization module and sterilization equipment. The sterilization module comprises a light emitting diode lamp bank, photocatalytic materials and a deep ultraviolet lamp element, wherein the light emitting diode lamp bank, the photocatalytic materials and the deep ultraviolet lamp element are arranged on the front side of a substrate; the light emitting diode lamp bank is used for emitting visible light of 400 nanometers or above or ultraviolet light of 300-400 nanometers to the photocatalytic materials; the photocatalyticmaterials are used for receiving the light wave of the light emitting diode lamp bank and generating a free radical with high oxidability; the deep ultraviolet lamp is arranged on the front side of the substrate and is used for emitting deep ultraviolet 300 nanometers or below to the photocatalytic materials. According to the sterilization module, the light emitting diode lamp element serves as the motivation light source of the photocatalytic materials and is used for emitting visible light of 400 nanometers or above or ultraviolet light of 300-400 nanometers to the photocatalytic materials,the photocatalytic materials are used for receiving the light wave of the light emitting diode lamp bank and generating the free radical with the high oxidability, sterilization and VOCs (Volatile Organic Compounds) purification are realized, and an effect on thoroughly purifying indoor gas pollutant is achieved.

The present invention discloses a catalytic decomposition type air purification material and a preparation method thereof. The preparation method comprises: 1) uniformly mixing a binder, an air permeable glue, CuO nano-rods, coconut shell active carbon powder, a nanometer light-sensitive metal oxide, active MnO2 nano-rods and water to prepare a mixed slurry, wherein a weight ratio of the binder to the air permeable glue to the CuO nano-rods to the coconut shell active carbon powder to the nanometer light-sensitive metal oxide to the active MnO2 nano-rods to the water in the mixed slurry is (0.6-1):(2-8):(0-1):(0-1):(0-0.9):10:(20-30); and 2) through a soaking method, a spraying method or a coating method and other methods, attaching the mixed slurry prepared in the step 1) to a substrate, and drying at a temperature of 80-110 DEG C so as to prepare the catalytic decomposition type air purification material. According to the present invention, the catalytic decomposition type air purification material preparation process is simple, the industrial production is easily achieved, the air purification effect is excellent, and the method is suitable for promotion application.

The invention discloses an environment-friendly microbial method garbage treatment device. The device comprises a treatment box, the upper part and the lower part of the treatment box are sequentiallyinstalled with a crushing cylinder, a reaction pot and a product classification and purification device through a grinding chamber, a microbial reaction chamber and an enzymolysis product treatment chamber; a rotary grinding cutting device is arranged in the crushing cylinder, a uniform rolling stirring device is arranged in the reaction pot, efficient crushing of the rotary grinding device enables the garbage particles to be more finely crushed, the speed of organic matters in the microbial enzymolysis waste is higher, the uniform rolling stirring device can enable the garbage to be fully and uniformly contacted with microorganisms, the area and the toxicity killing efficiency of the primary purification of the garbage are improved; the method comprises the following steps of crushing and grinding the garbage by the rotary grinding cutting device, then the garbage enters the reaction pot, the microorganisms in the reaction pot carry out enzymolysis reaction on the crushed garbage forthe first time, the crushed garbage is uniformly mixed with the microorganisms, the enzymolysis reaction efficiency is high, and the garbage purification treatment is more thorough.

The invention mainly belongs to the technical field of a treating method for high temperature flue gas and a device thereof and specifically relates to a method and a device for removing dioxin from high-temperature flue gas. The method comprises the following steps: firstly, recycling the waste heat of the high-temperature flue gas, removing dust and de-acidifying and then quickly cooling, removing the dust for the second time, entering into a photo-decomposing purifying tower for decomposing dioxin and then emitting. The resynthesis of dioxin is restrained in the manner of recycling the waste heat of the high-temperature flue gas, removing dust and de-acidifying and then quickly cooling and the ultraviolet ray is utilized to catalytically decompose dioxin, so that the simple and efficient removal of the dioxin in the high-temperature flue gas is realized. The method and the device for removing the dioxin according to the invention have the characteristics of simplicity, high efficiency, and the like, and are easy for industrial application.

The invention discloses a device and a method for purification treatment of gas of medical waste non-incineration treatment. The device and the method comprise the following structure and the following treatment process: exhaust gas goes into a gas buffer tank, and online detection of the exhaust gas composition is carried out; then the exhaust gas goes into a gas pretreatment device and is subjected to heat exchange with a heat exchanger; next, the exhaust gas goes into the interior of a reaction tower through a pipeline and an inlet at the lower end of the reaction tower, then flows from bottom to top, and successively passes through microorganism filler layers, an activated carbon filler layer and a photocatalytic reaction layer; after being subjected to three-time purification in the tower, the exhaust gas is discharged from the top of the reaction tower, then goes into the bottom of a water washing device through a pipeline, and at the same time, goes into the top of the water washing device for elution with water; sewage is discharged from the bottom of the water washing device, sewage treatment is carried out, and the water-washed air is exhausted from the top of the water washing device. Three treatment means are reasonably combined to control VOC and odor components in the exhaust gas; and compared with a single method, the combined three treatment means have more thorough exhaust gas treatment, basically eliminate odors, and have the VOCs removal rate which reaches more than 95%.

The invention provides a recyclable waste gas treatment device, which includes a waste gas treatment tank and an air inlet pipe and an air outlet pipe arranged above the waste gas treatment tank. The middle part of the waste gas treatment tank is perpendicularly equipped with a first layer toxic gas partition board and a second layer toxic gas partition board, a first layer partition net and a second layer partition net are disposed between the first layer toxic gas partition board and the waste gas treatment tank side wall, and a first layer dust guard plate and a second layer dust guard plate are arranged between the second layer toxic gas partition board and the waste gas treatment tank side wall. A nozzle is disposed above the first layer partition net at the top of the waste gas treatment tank, and is equipped with a plurality of nozzles. The waste gas treatment tank bottom is provided with a tank port, a rubbish collection box is disposed below the tank port, and the rubbish collection box is internally provided with a collection box partition board. The air outlet pipe is in connection with a detector, the other end of the detector is connected to a reflux pipe, and the other end of the reflux pipe is arranged at the upper end of the waste gas treatment tank. The recyclable waste gas treatment device provided by the invention can perform repeated cyclic purification to reach the emission purpose finally.

The invention discloses an energy-saving efficient waste gas treatment device. The energy-saving efficient waste gas treatment device comprises a naked flame furnace and a washing tower, wherein an air inlet pipe is connected to the left side of the naked flame furnace, an oxygen supply device is arranged on the right side of the naked flame furnace, a dust absorbing device, a heat exchanger and a first draught fan are respectively arranged on an air conveying pipe of the naked flame furnace; and a second filtering layer, a first filtering layer, a catalyzing device and a spraying pipe are respectively arranged in the washing tower from top to bottom, a bracket is mounted in the washing tower at the lower side of the spraying pipe, a vertical pipe is rotationally mounted in the middle of the bracket, the lower end of the vertical pipe is communicated with the air conveying pipe through a rotating joint, a motor for driving the vertical pipe to rotate is further arranged below the bracket, a plurality of transverse pipes are circumferentially mounted on the side surface of the upper end of the vertical pipe, and a plurality of jetting heads are mounted on the lower sides of the transverse pipes. The energy-saving efficient waste gas treatment device has the beneficial effects that waste is thoroughly purified, the purifying efficiency is high, the environmental pollution is furthest reduced, and the exhausted gas meets the requirements; and meanwhile, the heat energy resource is effectively utilized, the energy is saved, the environment is protected, and the waste of the resources is reduced.

The invention discloses a gas protecting system of a metal powder laser quick forming machine. The metal powder laser quick forming machine comprises a sealing forming bin, the gas protecting system comprises a gas circulating purifying mechanism, the gas circulating purifying mechanism comprises an explosive-proof and smoke dust-removal purifier, the explosive-proof and smoke dust-removal purifier is connected with the sealing forming bin through a gas inlet pipe and a gas outlet pipe to form the gas circulating purifying, and is sequentially provided with a water filtering device, a filtering element device, a circulating fan device and a drying machine from an inlet to an exit, and electric valve switches are respectively arranged on the gas inlet pipe and the air outlet pipe. The gas protecting system has the advantages that the oxygen content of the forming environment is controlled to be less than 100ppm, the smoke dust produced in the forming process can be filtered to balance the gas pressure of the forming bin, and the compactness of the formed part reaches 100%; the bright metal luster is realized, and the oxidizing is avoided; the consumption amount of inert gas is saved, the consumption amount of gas is only equal to 2 / 100 of the consumption amount of gas of the prior art, and the economic benefit is higher.

The invention relates to a purification device for flue gases a purification device for flue gases comprising a primary purification tower, a washing tower and an adsorption tower which are connected in sequence. The washing tower is a spray tower and the adsorption tower includes a plurality of standard flashboards inserted into its flue gases duct. A plurality of washing nozzles are placed in a central part of an inner space of the spray tower, a plurality of sieve plates are placed in a lower part of an inner space of the spray tower and a gas-liquid segregating unit is placed in an upper part of an inner space of the spray tower. The device is simple in technique, convenient in operation and can completely remove the harmful ingredients from the flue gases, and thereby reducing the harm of flue gases upon human bodies and environment.

The invention discloses an engine waste gas aftertreatment system, being used for purifying waste gas discharged from an exhaust pipe of the engine. The engine waste gas aftertreatment system comprises a catalytic converter, wherein the catalytic converter is connected with the exhaust pipe of the engine by virtue of a turbocharger, the turbocharger is connected with an air inlet pipe of the engine by virtue of an air inlet intercooler, the catalytic converter contains a catalyst which is used for an assisting reaction; when the engine is normally operated, an exhaust switching valve controls high temperature waste gas to enter into the catalytic converter, thus the high temperature waste gas enters into the air after being purified; and when the engine is in a reverse towing working condition, and the exhaust switching valve controls low temperature exhausted gas to enter into the engine to be circulated from a return line or is directly discharged into the air from a bypass pipeline, thus temperature of an aftertreatment device is not influenced by the low temperature exhausted gas. By adopting the engine waste gas aftertreatment system disclosed by the invention, the pipeline of the aftertreatment device is improved, the influence of exhaust to the temperature of the aftertreatment device is reduced, thus the aftertreatment device maintains high-efficiency purification exhaust when the engine is converted into the normal operation from the 'reverse towing' working condition, and hidden troubles that environment is polluted caused by the uncompleted waste gas purification can be effectively eliminated.

The invention discloses a decoration space peculiar smell purifying method and device and belongs to the technical field of air purification. The decoration space peculiar smell purifying method comprises the purifying process that peculiar smell in a decoration space enters a low-temperature plasma reactor to be treated and then enters a catalytic reactor, ultraviolet rays and a by-product ozone produced by the plasma reactor can strengthen the photocatalytic pollutant and intermediate product degradation process, residual ozone and nitric oxide and other by-products are removed through an efficient ozone decomposition catalyst, and meanwhile the peculiar smell in the decoration space is after-purified through an activated carbon layer and then is discharged into a room together with negative ions. The peculiar smell in a newly decorated room can be effectively treated, the ultraviolet rays and ozone produced by a low-temperature plasma can be also fully utilized to strengthen the photocatalytic pollutant and intermediate product degradation, the two processes complement each other's advantages, the energy utilization rate can be improved, and meanwhile the negative ions are released to actively purify an indoor air environment.

The invention relates to integrated waste gas treatment equipment. The integrated waste gas treatment equipment comprises a cooling device, a spraying purifying device and a gas purifying device, wherein the cooling device comprises a shell and a cooling spraying mechanism, the shell is provided with a cooling cavity, the cooling spraying mechanism is arranged in the cooling cavity, multiple clapboards are arranged from a cooling gas inlet to a cooling gas outlet in the cooling cavity so as to divide the cooling cavity into multiple cooling areas, and the clapboards are provided with through holes; the spraying purifying device comprises a tower body and a purifying spraying mechanism, the tower body is provided with an accommodation cavity, a purifying gas inlet, a purifying water outlet and a purifying gas outlet, the purifying gas inlet, the purifying water outlet, and the purifying gas outlet communicated with the accommodation cavity, the purifying spraying mechanism is arranged in the accommodation cavity, and the purifying gas inlet is communicated with the cooling gas outlet; the gas purifying device comprises a body which is provided with a purifying cavity, the body is provided with a wind inlet and a wind outlet, the wind inlet and the wind outlet are communicated with the purifying cavity, the wind inlet is communicated with the purifying gas outlet, and the purifying cavity comprises a plasma reaction cavity. The integrated waste gas treatment equipment is diversified in purifying function, waste gas causing odor pollution is degraded through multistage purification, the gas purifying velocity is obviously increased, and purification is conducted more thoroughly.

The invention relates to a novel special water purifier of a drinking water machine, comprising a raw water bucket, a purified water bucket, a filter element, an upper float valve and a lower float valve; the upper float valve is arranged in the purified water bucket and is used for controlling the highest water level in the purified water bucket; the lower float valve is connected with the outlet of the bottom of the purified water bucket and is used for controlling the highest water level in a water bucket of the drinking water machine; the raw water bucket is arranged above the purified water bucket; the filter element is fixedly connected to the bottom of the raw water bucket, and the filtering material in the filter element is made of micro-porous ceramics or hollow fiber; the water purification technique is as follows: powdery water treatment material is firstly blended with raw water and then the filter element is used for filtering. Compared with the special water purifier of a drinking water machine in the prior art, the novel special water purifier of the drinking water machine has the advantages of more humanized operation of the water purifier, high volume utilization rate of the water purifier, saving material, fresh water quality, low gravity center, good stability, high effective utilization rate of the water treatment material, saving the water treatment material resources, more complete purification and more reliable quality of yielding water.

The invention discloses a multistage filtering type waste gas purifying device. The multistage filtering type waste gas purifying device comprises a body, wherein the body comprises a sedimentation chamber, a purifying chamber, gas inlets and a gas outlet, wherein the sedimentation chamber is arranged below the body; the gas inlets are symmetrically arranged at two ends of the sedimentation chamber which is internally provided with a plurality of dust blocking plates which are arranged uniformly; the top end of the sedimentation chamber is connected with the lower part of the purifying chamber via a gas intake pipe; the bottom of the purifying chamber is provided with a liquid storage tank; a liquid charging opening is formed in one side of the liquid storage tank; the left and right sides of the liquid storage tank are respectively connected with a guide pipe; the guide pipe extends from the outer wall of the purifying chamber and is connected with a plurality of spraying heads arranged in the purifying chamber; a first filtering plate is arranged above the liquid storage tank; tow ends of the first filtering plate are respectively provided with oil water separators; a second filtering plate is arranged above the first filtering plate; an active carbon filter layer is arranged above a main spraying pipe; a buffering device is arranged between the precipitation chamber and the purifying chamber; the outer wall of the purifying chamber is provided with a support. The multistage filtering type waste gas purifying device has the advantages of good purifying effect, convenience in use and the like.

A flowing-type multi-stage chemicothermal method for reclaiming the oily sludge includes such steps as pre-treating by flushing the oily sludge with high-pressure circulating hot water to fluidize it, washing in the serially connected multiple washing pools containing different chemicals, and water treating to recover crude oil.

The invention relates to a highly efficient intelligent purification system including a server, a communication network, a purification area and a mobile control terminal. The server includes a gas content information database, a judgment module, an information interaction module and a gas control module. The purifying pipeline comprises an inlet section, a filtering section, a spraying section, a gas-liquid separating section, a detecting section, an outlet section and a circulating section. A first electromagnetic valve and a second electromagnetic valve are arranged in the outlet section and the circulating section and results detected by a harmful gas-detecting sensor are transmitted to the server. The server then compares the detected hazardous gas content with the allowable content range in the database, and controls the closing of the first electromagnetic valve and the second electromagnetic valve by the comparison result, thereby controlling the current gas to be discharged out of the room or again into for purification. The invention has the advantages of good reliability, high purification efficiency, complete and stable air purification, continuous operation, and air humidification and antibacterial effect.

The invention discloses a tail gas treatment device for waste incineration. The device comprises a dust removal tank and a purification tank, wherein the gas outlet end of the top of the purificationtank communicates with an exhaust pipe and a circulating pipe through a three-way electromagnetic valve, while the other end of the circulating pipe is connected with a communicating pipe; a discharging pipe is arranged at the discharging end of the bottom of the purification tank, and a tail gas dust removal mechanism and a tail gas purification mechanism are arranged in the dust removal tank andthe purification tank respectively; the output end of the first motor is connected with the first rotating shaft; the bottom end of the first rotating shaft extends into the dust removal tank and isrotationally connected with the dust removal tank; the bottom end of the first rotating shaft is connected with the middle of a transverse plate, brush hairs are arranged on the bottom face of the transverse plate, connecting blocks are arranged on the two sides of the transverse plate respectively, first magnets are arranged on the bottom faces of the connecting blocks, the inner wall of the dustremoval tank is connected with a filtering piece through a limiting assembly, and a weight sensor is arranged at the bottom of the dust collection cover. The device has the advantages that dust removal and ash removal are facilitated, the tail gas purification efficiency is high, automatic operation is improved, and labor output is reduced.

Provided is an oscillatory type sewage sedimentation basin, which utilizes a tilting system to tilt a movable basin, so as to generate gradient tangential deformation and resonance on raw water, promote a flocculation reaction and improve sewage treating effect, and an operation method thereof. The movable sedimentation basin is jointed with a pedestal hinge and can tilt around the hinge under a tilting operation of the tilting system. When sewage reaches a destabilization critical state, the tilting mechanism is started to tilt the movable basin to generate gradient tangential deformation on the raw water and promote the flocculation reaction. A basin tilting period is controlled to generate resonance oscillation on the raw water. The resonance promotes fully conduction of the flocculation reaction, so as to purify the raw water repeatedly, separate the settlement thoroughly and reduce suspensions. The settlement progress consumes a short time and energy, has good effect and low costs and is green, environment-friendly and easily operated.

The invention relates to an ecological treatment circulatory system for discharge water of a sea farming pond. The ecological treatment circulatory system is characterized by comprising an ecological water diversion ditch, wherein the beginning end of the ecological water diversion ditch is communicated with water in an offshore sea area; seawater is introduced through ebb and flow; a gate is also arranged, and the tail end of the gate is communicated with the beginning end of an ecological gravel bed through an overflow pipe; the tail end of the ecological gravel bed is communicated with the beginning end of a pre-positioned reservoir through an overflow pipe, and the tail end of the pre-positioned reservoir is communicated with the beginning end of a sea farming pond through an overflow pipe; the lower part of the tail end of the sea farming pond is communicated with the upper part of the beginning end of the ecological water diversion ditch through a water drainage pipe, and a water pump is arranged to provide drainage power; gravels with different particle sizes are arranged from the bottom up from the big to the small on the ecological gravel bed, and water plants are planted at the top; the pre-positioned reservoir is divided into a deep water area, an ecological floating bed area and a water source area from the beginning end to the tail end, of which the water depths are gradually reduced, sunken plants are planted in the deep water area, and an ecological floating bed is arranged in the ecological floating bed area.

The invention discloses a spot welding machine welding fume purifying device with an environment-friendly function and relates to the technical field of spot welding machine purifying equipment. The spot welding machine welding fume purifying device comprises a bottom plate; a case is fixedly connected to the top of the bottom plate; a motor is fixedly connected to the bottom of the inner wall of the case through a connecting block; an output shaft of the motor is sleeved with a first bevel gear; and a transmission shaft is rotatably connected to the position, located on one side of the motor, at the bottom of the inner wall of the case through a bearing seat. According to the spot welding machine welding fume purifying device with the environment-friendly function, the environmental protection property of a spot welding machine is greatly improved, welding fume discharged by the spot welding machine is well collected and purified in a centralized mode, the situations that the welding fume is directly discharged into air and pollutes the environment around the spot welding machine are prevented, and the situation that workers suck the large amount of welding fume, and thus the physical health of the workers is greatly damaged is well avoided, so that normal spot welding work of the workers is guaranteed, and using of people for the spot welding machine is quite facilitated.

The invention provides a plasma waste gas treatment device and method, and belongs to the technical field of waste gas treatment.The plasma waste gas treatment device comprises a thermal reaction system, an air inlet system, a cooling system, a multistage purification washing system, an exhaust system and a liquid circulating system, and the structureis compact, safe and reliable.The plasma wastegas treatment method comprises the following steps of: carrying out high-temperature cracking reaction after waste gas to be treated enters into the thermal reaction system through the air inlet system, and carrying out quenching and preliminary purification after entering the cooling system; carrying out washing and purification for a plurality of times after entering the multistage washing system; finally discharging the waste gas from a chimney through a dehydration layer under the action of an induced draft fan.The waste gas is subjected to high-temperature cracking, cooling, preliminary purification and multistage purification, so that the purification speed is obviously improved; and the waste gas which can be treated by the method comprises perfluorides, inflammable substances, corrosion, poisons and the like, the purification is thorough, the method is safe and reliable.

The invention relates to a boiler flue gas purifying and heat exchanging device. The boiler flue gas purifying and heat exchanging device comprises a boiler, a flue gas purifying chamber, a first heat exchanger, a second heat exchanger and a reverse osmosis membrane set, wherein the boiler is communicated with a flue inlet in the flue gas purifying chamber through a flue gas pipeline, a flue gas outlet in the flue gas purifying chamber is communicated with the second heat exchanger, a liquid outlet in the flue gas purifying chamber is communicated with the first heat exchanger, the first heat exchanger is communicated with the reverse osmosis membrane set, and the reverse osmosis membrane set is communicated with a liquid inlet in the flue gas purifying chamber; the flue gas purifying chamber comprises a casing, a flue inlet pipe, a DC power supply, a negative electrode, a positive electrode, an activated carbon layer and a flue exhausting pipe; circulation liquid is stored in the casing; a coil pipe is arranged on the first heat exchanger, a heat exchanging flue pipe is arranged on the second heat exchanger, and an outlet in the heat exchanging flue pipe is communicated with a chimney. According to the boiler flue gas purifying and heat exchanging device disclosed by the invention, when flue gas is purified through the flue gas purifying chamber, the circulation liquid in the flue gas purifying chamber directly performs heat exchange with the flue gas; the circulation liquid is in direct contact with the flue gas, so that the heat exchanging efficiency is high, and the heat loss is low.

The invention discloses a novel integrated stove with an oily fume treatment function. The novel integrated stove comprises a cabinet body, wherein an operating table is arranged on the top of the cabinet body; a gas stove is arranged on the operating table; an ignition switch and a control switch group are separately arranged on the operating table at the front side of the gas stove; a fume collecting cover is arranged at the rear side of the top of the cabinet body; an air inlet is formed in the front side of the fume collecting cover; an illuminating lamp is arranged on the top of the frontside of the fume collecting cover; the left side of the cabinet body is separately equipped with an air outlet tube and a fuel gas tube; a saponifying bin is arranged at the bottom side of the innerpart of the cabinet body; an air baffle plate is arranged above the saponifying bin; an eddy-current fan and a gas-liquid separator are separately arranged between the air baffle plate and the cabinetbody; a gas outlet end of the eddy-current fan is connected with a gas inlet end of the gas-liquid separator; a gas outlet end of the gas-liquid separator is connected with an air outlet tube; and awater pump is arranged in the saponifying bin. The novel integrated stove is simple in structure, is reasonable in design, can completely purify the oily fume, enables a discharge flue to be free of oil and smoke all the time, and is safe and fireproof, so that oily fume emission concentration is lower than the national standards.

The invention discloses an efficient urban sewage treatment system which comprises a stirring box, a filtering box and a purifying box.The stirring box is located at the upper end of the filtering box.The stirring box and the filtering box are connected through a water conveying pipe.A box cover is arranged at the upper end of the stirring box.The upper end of the box cover is provided with a driving device and a sewage inlet pipeline.The driving device is in drive connection with a stirring shaft.The stirring shaft penetrates through the box cover and extends into the stirring box.Stirring blades are arranged at the portion, inside the stirring box, of the stirring shaft at equal intervals.A filtering layer is arranged at the bottom inside the stirring box.An ultrasonic oscillator is arranged on the inner side wall of the filtering box.A groove is formed in the bottom inside the filtering box.A stretchable device is arranged inside the groove.An ultrasonic probe is arranged at the upper end of the stretchable device.A water suction pump is arranged at the bottom inside the filtering box.According to the efficient urban sewage treatment system, the sewage treatment difficulty is greatly lowered, the sewage treatment effect is improved, it is ensured that purified water reaches the quality standard, and the sewage treatment efficiency is improved.