CN110404394B - Ultraviolet light catalytic oxidation-Fenton efficient composite organic waste gas treatment device and method - Google Patents
Ultraviolet light catalytic oxidation-Fenton efficient composite organic waste gas treatment device and method Download PDFInfo
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- CN110404394B CN110404394B CN201910907903.0A CN201910907903A CN110404394B CN 110404394 B CN110404394 B CN 110404394B CN 201910907903 A CN201910907903 A CN 201910907903A CN 110404394 B CN110404394 B CN 110404394B
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Abstract
The invention relates to the technical field of organic waste gas treatment, in particular to an ultraviolet catalytic oxidation-Fenton efficient composite organic waste gas treatment device and method. The treatment device comprises a tower body with a hollow structure, and a waste gas inlet and a waste gas outlet which are communicated with the tower body; a washing and purifying area, a drying area and a photocatalytic oxidation area are sequentially arranged in the tower body from bottom to top; the washing and purifying area is provided with a liquid storage area; the baffle wall is fixed at the bottom of the tower body to divide the washing and purifying area into a clean water dedusting washing and purifying area and a Fenton treatment washing and purifying area; the photocatalytic oxidation zone comprises a UV photocatalytic treatment zone and a plasma treatment zone. The treatment method comprises the steps of feeding organic waste gas to be treated into a washing and purifying area in the tower body through a waste gas inlet, and discharging the organic waste gas from an outlet after the organic waste gas passes through a drying area and a photocatalytic oxidation area in sequence after being sprayed for the second time. The treatment device and the method can realize multi-stage treatment of the organic waste gas, achieve good deodorization, purification and harmless emission effects, and have efficient disinfection and sterilization effects.
Description
Technical Field
The invention relates to the technical field of organic waste gas treatment, in particular to an ultraviolet catalytic oxidation-Fenton efficient composite organic waste gas treatment device and method.
Background
With the increasing environmental problems, people pay more and more attention to environmental protection and reduce or reduce the pollution to the environment through various ways. In the industrial and agricultural production process, Volatile Organic Compounds (VOCs) are inevitably discharged in various production occasions such as paint spraying, printing, metal oil removal and degreasing, adhesives and the like, which are important sources for polluting the environment and harming human health, and the VOCs pollute the air at any time.
In order to maintain the air quality in the environment, various technologies are studied at home and abroad for treating the VOCs, wherein the more common technologies are as follows: combustion, condensation, adsorption, absorption, biological, plasma, UV photocatalysis, catalytic oxidation, and the like. However, most of the above treatment technologies have the problems of low treatment efficiency, high use cost, large amount of residual volatile organic compounds, and even secondary pollution, and the current treatment technologies are difficult to adapt to the ever-increasing environmental protection standards and living air quality requirements.
Disclosure of Invention
The invention mainly solves the technical problems in the prior art, and provides the ultraviolet light catalytic oxidation-Fenton high-efficiency composite organic waste gas treatment device and method with high purification efficiency, good safety, good treatment effect and corrosion resistance.
The invention is realized by adopting the following technical scheme:
an ultraviolet catalytic oxidation-Fenton high-efficiency composite organic waste gas treatment device comprises a tower body with a hollow structure, and a waste gas inlet and a waste gas outlet which are communicated with the tower body;
a washing and purifying area, a filtering area and a photocatalytic oxidation area are sequentially arranged in the tower body from bottom to top;
the lower part of the washing and purifying area is provided with a liquid storage area; the baffle wall is fixed at the bottom of the tower body to divide the liquid storage area into a clear water liquid storage area and a Fenton reagent liquid storage area; the top parts of the washing and purifying areas, which are positioned at the two sides of the baffle wall, are respectively provided with a first spraying layer and a second spraying layer, the baffle wall extends upwards to the first spraying layer, the washing and purifying areas are divided into a clean water dedusting washing and purifying area and a Fenton processing washing and purifying area, and the upper side of the baffle wall is bent towards the clean water dedusting washing and purifying area; the baffle plate is arranged on the inner wall of the tower body between the washing and purifying area and the filtering area and forms a waste gas outlet of the clean water dedusting, washing and purifying area with the baffle wall;
the photocatalytic oxidation area comprises a UV photocatalytic treatment area and a plasma treatment area, the UV photocatalytic treatment area is positioned on the upper side of the filtering area, and the plasma treatment area is connected with the outlet.
Furthermore, a Fenton reagent is contained in the inner cavity of the Fenton reagent storage area, and an acidic hydrogen peroxide inlet is formed; the second spraying layer is connected with the Fenton reagent liquid storage area through a pressure pump; the acidic hydrogen peroxide inlet is connected with a hydrogen peroxide feeding device through a pressure pump.
Furthermore, a filling layer filled with a porous structure material is arranged at the lower part of the clean water dedusting, washing and purifying area, and the filling layer is fixed on the left side wall and the right side wall of the clean water dedusting, washing and purifying area between the waste gas inlet and the clean water liquid storage area.
Furthermore, the filtering area comprises a filtering layer and a water-gas separating layer which are arranged from bottom to top; the filter layer has a honeycomb structure; the water-gas separation layer comprises an upper water baffle, a middle water baffle and a lower water baffle, wherein the middle water baffle is obliquely arranged in an L shape and is arranged between the upper water baffle and the lower water baffle.
Furthermore, the plasma treatment area comprises a plurality of groups of high-energy ion tubes, the UV photocatalysis treatment area comprises a plurality of groups of ultraviolet tubes and photocatalysis plates, the plurality of groups of high-energy ion tubes, the ultraviolet tubes and the photocatalysis plates are distributed up and down in an array, and the plurality of groups of ultraviolet tubes and the photocatalysis plates are distributed at intervals.
Furthermore, the photocatalytic plate adopts TiO2The material is prepared.
Further, the Fenton treatment washing purification area is larger than the radial section of the clean water washing purification area.
Furthermore, the high-efficiency composite organic waste gas treatment device also comprises an air inducing device which is arranged at the upper part of the plasma treatment area; the induced draft device comprises an induced draft fan, and an outlet is connected with the plasma treatment area through the induced draft fan.
The treatment method of the ultraviolet photocatalytic oxidation-Fenton efficient composite organic waste gas treatment device comprises the following steps:
1) conveying organic waste gas to be treated to a washing and purifying area inside a tower body through a waste gas inlet, simultaneously conveying clear water to a clear water liquid storage area, conveying a Fenton reagent to a Fenton reagent liquid storage area, starting a pressure pump to continuously feed acidic hydrogen peroxide in a hydrogen peroxide feeding device to the Fenton reagent liquid storage area through an acidic hydrogen peroxide inlet, and starting the pressure pump to enable clear water to enter a first spraying layer and a Fenton mixed solution to enter a second spraying layer to be sprayed out.
2) And starting a plurality of groups of ultraviolet lamp tubes, and allowing the organic waste gas treated by the washing and purifying zone to enter the UV photocatalysis treatment zone after being filtered by the filtering zone and subjected to water-gas separation.
3) And starting a plurality of groups of high-energy ion tubes, and allowing the organic waste gas treated by the UV photocatalysis treatment area to enter the plasma treatment area.
4) The organic waste gas treated by the plasma treatment zone is discharged from an outlet.
Further, the pH value of the continuous acidic hydrogen peroxide is 3.0, and the continuous acidic hydrogen peroxide is continuously added into a Fenton reagent storage area to enable the mass concentration of the hydrogen peroxide to be 0.1-1.5%.
The invention has the beneficial effects that: by adopting the ultraviolet catalytic oxidation-Fenton high-efficiency composite organic waste gas treatment device and method, the ultraviolet catalytic oxidation, plasma and Fenton technologies are combined to degrade organic pollutants which are difficult to degrade in the environment, and the organic pollutants have higher oxidation and decomposition performances than the organic pollutants which are difficult to degrade in the environment under the action of a single technology; the multi-stage treatment of the organic waste gas is realized through the multiple arrangement of the washing and purifying area, the filtering area and the photocatalytic oxidation area in the tower body, so that the good deodorizing, purifying and harmless emission effects are achieved, and meanwhile, the high-efficiency disinfecting and sterilizing effect is achieved; through secondary spraying of the organic waste gas, the dust in the waste gas can be well washed, and through capture of the filling layer and filtering action of the filtering area, the dust in the waste gas can be well removed, the dust achieves ultralow emission, and subsequent treatment of the organic waste gas is not influenced; safe and reliable, and small floor area.
Drawings
FIG. 1 is a schematic structural diagram I of an ultraviolet photocatalytic oxidation-Fenton efficient composite organic waste gas treatment device.
Fig. 2 is a schematic structural diagram II of an ultraviolet photocatalytic oxidation-Fenton efficient composite organic waste gas treatment device according to the present invention.
FIG. 3 is a flow chart of the work of the ultraviolet photocatalytic oxidation-Fenton high-efficiency composite organic waste gas treatment method of the present invention.
In the figure:
1. a tower body; 2. an exhaust gas inlet; 3. an outlet; 5. a retaining wall; 6. a baffle plate; 7. a UV photocatalytic treatment zone; 8. a plasma treatment zone; 9. a filling layer; 10. a filter layer; 11. a water-gas separation layer; 41. a clear water reservoir zone; 42. a Fenton reagent liquid storage area; 43. a first spray layer; 44. a second spray layer; 71. an ultraviolet lamp tube; 72. a photocatalytic plate; 81. a high energy ion tube; 421. a hydrogen peroxide feeding device.
Detailed Description
In order to make the purpose and technical solution of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings.
As shown in fig. 1-2, the ultraviolet photocatalytic oxidation-Fenton high-efficiency composite organic waste gas treatment device comprises a hollow tower body 1, and a waste gas inlet 2 and a waste gas outlet 3 which are communicated with the tower body 1;
the interior of the tower body 1 is sequentially provided with a washing and purifying area, a filtering area and a photocatalytic oxidation area from bottom to top.
The washing and purifying area is provided with a liquid storage area; the baffle wall 5 is fixed at the bottom of the tower body 1 to divide the liquid storage area into a clear water liquid storage area 41 and a Fenton reagent liquid storage area 42; a first spraying layer 43 and a second spraying layer 44 are respectively arranged on two sides of the blocking wall 5 of the washing and purifying area, the blocking wall 5 extends upwards to the first spraying layer 43, the washing and purifying area is divided into a clean water dedusting washing and purifying area and a Fenton processing washing and purifying area, and the upper side of the blocking wall 5 is bent towards the clean water dedusting washing and purifying area; the baffle plate 6 is arranged on the inner wall of the tower body 1 between the washing and purifying area and the filtering area, and forms a waste gas outlet of the clean water dedusting, washing and purifying area with the baffle wall 5.
The organic waste gas firstly enters the clear water dedusting washing purification area for first spraying, and enters the Fenton treatment washing purification area through the waste gas outlet for second spraying reaction, so that the flow path of the organic waste gas in the tower body 1 is increased, the secondary spraying of the organic waste gas is realized, the dust in the organic waste gas can be removed to the maximum extent, and the Fenton pretreatment oxidation reaction of the organic waste gas can be realized in the Fenton treatment washing purification area.
The bending arrangement of the upper lateral clear water dedusting, washing and purifying area of the baffle wall 5 is used for preventing organic waste gas from passing through the clear water dedusting, washing and purifying area too fast and promoting the organic waste gas to enter the Fenton treatment, washing and purifying area after being fully absorbed and leached in the clear water dedusting, washing and purifying area.
Preferably, the Fenton is handled and is washed the radial cross section that the clean water washed the clean water purification district, because the flue gas velocity of just getting into is fast, through increasing the radial cross section that the Fenton was handled and is washed the clean water purification district for organic waste gas can fully carry out the second time and spray, ensures to have sufficient Fenton and handles reaction space, and through the reasonable setting of Fenton processing washing purification district and clean water washing purification district, can reduce the building height and the area of tower body 1 to a certain extent.
The baffle plate 6 is arranged obliquely downwards, and the included angle range between the baffle plate 6 and the inner wall of the tower body 1 is greater than or equal to 60 degrees and less than α degrees and less than 90 degrees, so that the spray liquid of the second spray layer 44 is prevented from generating accumulated liquid on the baffle plate 6, and the spray liquid of the second spray layer 44 is discharged to a Fenton treatment washing purification area along the baffle plate 6.
The clear water liquid storage area 41 is arranged below the tower body 1, and a sewage discharge outlet is arranged in the clear water liquid storage area 41 and used for discharging clear water and cleaning the clear water liquid storage area 41 regularly.
The lower part of the clean water dedusting, washing and purifying area is provided with a filling layer 9 filled with a porous structure material, and the filling layer 9 is arranged between the waste gas inlet 2 and the clean water liquid storage area 41.
The filling layer 9 may further include a fixing frame disposed at the lower portion of the clean water dedusting, washing and purifying region and adjacent to the liquid storage region, and the fixing frame is filled with a porous structure material to form the filling layer 9. The porous structure material can adopt active carbon, alumina, silica gel, artificial zeolite and the like, and has larger specific surface area, porous structure and stable chemical property. When the organic waste gas flows through the filling layer 9, particles are intercepted by the porous structure material, so that the situation that a large number of particles are accumulated too fast in the clear water liquid storage area 41 is avoided, and the blocking risk of the first spraying layer 43 is reduced.
The Fenton reagent liquid storage area 42 is arranged below the tower body 1, a Fenton reagent is contained in the inner cavity of the Fenton reagent liquid storage area 42, and an acidic hydrogen peroxide inlet is formed; the second spraying layer 44 is connected with the Fenton reagent liquid storage area 42 through a pressure pump; the acidic hydrogen peroxide inlet is connected with a hydrogen peroxide adding device 421 through a pressure pump. A Fenton reagent is contained in the inner cavity of the Fenton reagent liquid storage area 42, common ferric sulfate and the like are contained, a pressure pump is started, acidic hydrogen peroxide is added into the hydrogen peroxide adding device 421, and the acidic hydrogen peroxide is continuously added into the Fenton reagent liquid storage area 42 through an acidic hydrogen peroxide inlet, wherein the acidic hydrogen peroxide is added with inorganic acid, so that the hydrogen peroxide has a certain acidity, for example, the hydrogen peroxide is added with sulfuric acid or nitric acid, and the mass concentration of the hydrogen peroxide in the Fenton reagent in the Fenton treatment washing and purifying area is maintained within a certain range; the Fenton mixed solution in the Fenton reagent liquid storage area 42 is sprayed out through the second spraying layer 44, so that organic waste gas to be treated is fully contacted with the Fenton mixed solution sprayed by the spraying device, reaction occurs, organic matter macromolecules in the organic waste gas are oxidized into small molecules, and the organic waste gas continuously flows to the filtering area.
In order to prevent a great amount of sediment deposited in the reaction from entering the Fenton reagent liquid storage area 42 to influence the Fenton processing capacity of the Fenton processing washing purification area, a filling layer 9 which is the same as the clean water dedusting washing purification area can be arranged at the lower part of the Fenton processing washing purification area, and the filling layer 9 is arranged at a position close to the Fenton reagent liquid storage area 42; the Fenton reagent liquid storage area 42 can be divided into a Fenton residual liquid storage area and a Fenton reaction liquid storage area up and down, the Fenton residual liquid storage area is used for storing sediments and residual liquid after Fenton reaction, a sewage discharge outlet is formed for discharging the Fenton reaction residual liquid, and the Fenton residual liquid storage area is cleaned periodically; a Fenton reagent is contained in the inner cavity of the Fenton reaction liquid storage area, and an acidic hydrogen peroxide inlet is formed; the second spraying layer 44 is connected with the Fenton reagent liquid storage area 42 through a pressure pump; the acidic hydrogen peroxide inlet is connected with a hydrogen peroxide adding device 421 through a pressure pump.
The filtering area comprises a filtering layer 10 and a water-gas separating layer 11 which are arranged from bottom to top; the filter layer 10 has a honeycomb structure; the water-gas separation layer 11 comprises an upper water baffle, a middle water baffle and a lower water baffle, wherein the middle water baffle is in an inclined L shape and is arranged between the upper water baffle and the lower water baffle.
The organic waste gas is leached by the washing and purifying area and then passes through the filter layer 10, so that the dust in the organic waste gas can be effectively blocked and separated. The organic waste gas contains a certain amount of water after being sprayed, wherein the water can play a certain role in the subsequent treatment of volatile organic gas and has certain pollution and corrosion effects on equipment. Through setting up the moisture separation layer 11 that is used for separating waste gas and water, the last water baffle of moisture separation layer 11 and lower water baffle play to block, the effect of deceleration organic waste gas, well water baffle is provided with the L type baffle that a plurality of has certain spaced to one side, make organic waste gas increase in the motion route of well water baffle, organic waste gas flows in well water baffle, the space in it is organic waste gas's flow channel, produce the capillary action, be convenient for get rid of the moisture in the organic waste gas. And because the organic waste gas generally has higher temperature, the temperature of the middle water baffle is relatively lower, the middle water baffle and water vapor generate heat exchange, moisture is cooled and condensed into water drops to drop under the action of gravity, and the organic waste gas flows from bottom to top, so that the moisture is separated from the organic waste gas, and the temperature of the organic waste gas is reduced.
The photocatalytic oxidation area comprises a UV photocatalytic treatment area 7 and a plasma treatment area 8, the UV photocatalytic treatment area 7 is positioned on the upper side of the filtering area, and the plasma treatment area 8 is connected with the outlet 3.
The plasma processing area 8 comprises a plurality of groups of high-energy ion tubes 81, the UV photocatalysis processing area 7 comprises a plurality of groups of ultraviolet tubes 71 and photocatalysis plates 72, the plurality of groups of high-energy ion tubes 81, the ultraviolet tubes 71 and the photocatalysis plates 72 are respectively distributed up and down in an array, and the plurality of groups of ultraviolet tubes 71 and the photocatalysis plates 72 are distributed at intervals.
The photocatalytic plate 72 adopts TiO2The material is prepared.
In the photo-oxidation catalysis process, the organic waste gas which is not completely treated in the Fenton treatment washing and purifying area is further decomposed by utilizing the photocatalytic plate 72 arranged in the UV photocatalytic treatment area 7, so that the discharged gas is ensured to be pollution-free, and secondary pollution is not generated in the process. Meanwhile, the ultraviolet lamp tube 71 can also crack the molecular bonds of bacteria in the malodorous gas, and destroy the nucleic acid (DNA) of the bacteria, thereby playing roles in strengthening deodorization and killing the bacteria.
The multiple groups of high-energy ion tubes 81 installed in the plasma processing region 8 emit ion beams to decompose oxygen molecules in the air to generate free oxygen, i.e. active oxygen, which needs to be combined with molecules due to imbalance of positive and negative electrons carried by the free oxygen, thereby generating ozone. The ozone has strong oxidation effect on organic matters, can further strengthen the treatment effect on organic waste gas, continuously decomposes and oxidizes the organic waste gas which is not completely treated by the UV photocatalysis treatment area 7, finally degrades and converts the organic waste gas into low molecular compounds, water and carbon dioxide, and then the organic waste gas is discharged out of the tower body 1 through the outlet 3, thereby achieving the purposes of harmless treatment and environment protection.
In practical applications, an oxygen supply device may be installed in the plasma processing region 8 as needed to supply oxygen to the plasma processing region 8 in time to ensure the decomposition and oxidation ability of the plasma processing region 8.
In addition, as an improvement of the invention, the waste gas inlet 2 can be provided with an induced draft fan, and the induced draft fan is started to send the organic waste gas to be treated into the tower body 1 through the waste gas inlet 2. In addition, an induced draft device can be arranged at the upper part of the plasma processing area 8 and used for discharging the processed organic waste gas. The induced draft device comprises an induced draft fan, and the outlet 3 is connected with the plasma processing area 8 through the induced draft fan, so that the flowing direction of the organic waste gas is effectively ensured.
The outside of the tower body 1 can be provided with a control system which is respectively connected with each component part in the tower body 1, and the control system is also provided with a display device. The display device comprises an indicator light, a display screen and a control button. Under normal conditions, the staff only need operate control button to carry out parameter setting through the display screen to the control system operation, just can guarantee the normal operating of whole device, the pilot lamp is in normal display state simultaneously. When the device breaks down, the pilot lamp shows scintillation alarm state to remind the staff to inspect and maintain, improve the purification efficiency and the security of device.
Based on the aboveThe improvement is that an air detector can be arranged at the outlet 3 and is connected with a control system for controlling and detecting the outlet concentration of the organic waste gas, thereby realizing the online monitoring of the organic waste gas treatment effect. By adopting the scheme, the discharge concentration of VOCs for VOCs treatment is lower than 20mg/m3And meets the emission standard.
As shown in fig. 3, a treatment method based on the above-mentioned ultraviolet photocatalytic oxidation-Fenton high-efficiency composite organic waste gas treatment device is as follows:
1) conveying organic waste gas to be treated to a washing and purifying area inside the tower body 1 through the waste gas inlet 2, meanwhile, conveying clear water to a clear water liquid storage area 41, conveying a Fenton reagent to a Fenton reagent liquid storage area 42, starting a pressure pump to continuously feed acidic hydrogen peroxide in a hydrogen peroxide feeding device 421 into the Fenton reagent liquid storage area 42 through an acidic hydrogen peroxide inlet, and then starting the pressure pump to enable clear water to enter a first spraying layer 43 and a Fenton mixed solution to enter a second spraying layer 44 to be sprayed out.
2) The multiple groups of ultraviolet lamp tubes 71 are started, and the organic waste gas treated by the washing and purifying area enters the UV photocatalysis treatment area 7 after being filtered by the filtering area and separated from water and gas.
3) And (3) starting a plurality of groups of high-energy ion tubes 81, and allowing the organic waste gas treated by the UV photocatalytic treatment zone 7 to enter the plasma treatment zone 8.
4) The organic waste gas treated by the plasma treatment zone 8 is discharged from the outlet 3.
The pH value of the acidic hydrogen peroxide is 3.0, and the acidic hydrogen peroxide is continuously put into the Fenton reagent liquid storage area 42 to ensure that the mass concentration of the hydrogen peroxide is 0.1-1.5%.
In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "communicating" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The invention is not to be considered as limited to the particular embodiments shown, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.
Claims (10)
1. An ultraviolet catalytic oxidation-Fenton high-efficiency composite organic waste gas treatment device is characterized by comprising a tower body (1) with a hollow structure, and a waste gas inlet (2) and a waste gas outlet (3) which are communicated with the tower body (1);
a washing and purifying area, a filtering area and a photocatalytic oxidation area are sequentially arranged in the tower body (1) from bottom to top;
the lower part of the washing and purifying area is provided with a liquid storage area; the baffle wall (5) is fixed at the bottom of the tower body (1) to divide the liquid storage area into a clear water liquid storage area (41) and a Fenton reagent liquid storage area (42); the top of the washing and purifying area, which is positioned at the two sides of the baffle wall (5), is respectively provided with a first spraying layer (43) and a second spraying layer (44), the baffle wall (5) extends upwards to the first spraying layer (43), the washing and purifying area is divided into a clean water dedusting washing and purifying area and a Fenton treatment washing and purifying area, and the upper side of the baffle wall (5) is bent towards the clean water dedusting washing and purifying area; the baffle plate (6) is arranged on the inner wall of the tower body (1) between the washing and purifying area and the filtering area and forms a waste gas outlet of the clean water dedusting, washing and purifying area with the baffle wall (5); the organic waste gas firstly enters a clean water dedusting washing purification area for primary spraying, enters a Fenton treatment washing purification area through a waste gas outlet of the clean water dedusting washing purification area for secondary spraying reaction, and is subjected to secondary spraying on the organic waste gas;
the photocatalytic oxidation area comprises a UV photocatalytic treatment area (7) and a plasma treatment area (8), the UV photocatalytic treatment area (7) is positioned on the upper side of the filtering area, and the plasma treatment area (8) is connected with the outlet (3).
2. The ultraviolet photocatalytic oxidation-Fenton high-efficiency composite organic waste gas treatment device as claimed in claim 1, wherein a Fenton reagent is contained in an inner cavity of the Fenton reagent storage area (42) and is provided with an acidic hydrogen peroxide inlet; the second spraying layer (44) is connected with the Fenton reagent liquid storage area (42) through a pressure pump; the acidic hydrogen peroxide inlet is connected with a hydrogen peroxide adding device (421) through a pressure pump.
3. The ultraviolet photocatalytic oxidation-Fenton high-efficiency composite organic waste gas treatment device as claimed in claim 1, wherein a filling layer (9) filled with a porous structure material is arranged at the lower part of the clean water dust removal washing purification area, and the filling layer (9) is fixed on the left side wall and the right side wall of the clean water dust removal washing purification area between the waste gas inlet (2) and the clean water liquid storage area (41).
4. The ultraviolet photocatalytic oxidation-Fenton high-efficiency composite organic waste gas treatment device as claimed in claim 1, wherein the filtering zone comprises a filtering layer (10) and a water-gas separation layer (11) which are arranged from bottom to top; the filter layer (10) has a honeycomb structure; the water-gas separation layer (11) comprises an upper water baffle, a middle water baffle and a lower water baffle, wherein the middle water baffle is obliquely arranged in an L shape and is arranged between the upper water baffle and the lower water baffle.
5. The ultraviolet photocatalytic oxidation-Fenton high-efficiency composite organic waste gas treatment device as claimed in claim 1, wherein the plasma treatment area (8) comprises a plurality of groups of high-energy ion tubes (81), the UV photocatalytic treatment area (7) comprises a plurality of groups of ultraviolet tubes (71) and photocatalytic plates (72), the plurality of groups of high-energy ion tubes (81), the ultraviolet tubes (71) and the photocatalytic plates (72) are distributed up and down in an array, and the plurality of groups of ultraviolet tubes (71) and the photocatalytic plates (72) are distributed in a spaced arrangement.
6. The ultraviolet photocatalytic oxidation-Fenton high-efficiency composite organic waste gas treatment device as claimed in claim 5, wherein the photocatalytic plate (72) is made of TiO (TiO)2The material is prepared.
7. The ultraviolet photocatalytic oxidation-Fenton high-efficiency composite organic waste gas treatment device as claimed in claim 1, wherein the Fenton treatment washing and purifying area is larger than the radial section of the clean water washing and purifying area.
8. The ultraviolet photocatalytic oxidation-Fenton high-efficiency composite organic waste gas treatment device as claimed in claim 1, wherein the high-efficiency composite organic waste gas treatment device further comprises an air inducing device arranged at the upper part of the plasma treatment zone (8); the induced draft device comprises an induced draft fan, and the outlet (3) is connected with the plasma treatment area (8) through the induced draft fan.
9. The treatment method based on the ultraviolet photocatalytic oxidation-Fenton high-efficiency composite organic waste gas treatment device as claimed in any one of claims 1 to 8 is characterized by comprising the following steps of:
1) conveying organic waste gas to be treated to a washing and purifying area inside a tower body (1) through a waste gas inlet (2), simultaneously conveying clear water to a clear water storage area (41), conveying a Fenton reagent to a Fenton reagent storage area (42), starting a pressure pump to continuously feed acidic hydrogen peroxide in a hydrogen peroxide feeding device (421) into the Fenton reagent storage area (42) through an acidic hydrogen peroxide inlet, and starting the pressure pump to enable the clear water to enter a first spraying layer (43) and the Fenton mixed solution to enter a second spraying layer (44) to be sprayed out;
2) starting a plurality of groups of ultraviolet lamp tubes (71), filtering the organic waste gas treated by the washing and purifying area through a filtering area, separating water and gas, and then entering a UV photocatalysis treatment area (7);
3) opening a plurality of groups of high-energy ion tubes (81), and allowing the organic waste gas treated by the UV photocatalytic treatment region (7) to enter a plasma treatment region (8);
4) the organic waste gas treated by the plasma treatment zone (8) is discharged from the outlet (3).
10. The treatment method of the ultraviolet photocatalytic oxidation-Fenton high-efficiency composite organic waste gas treatment device as claimed in claim 9, wherein the pH value of the acidic hydrogen peroxide is 3.0, and the acidic hydrogen peroxide is continuously added into the Fenton reagent storage area (42) so that the mass concentration of the hydrogen peroxide is 0.1% -1.5%.
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| CN111068509A (en) * | 2019-12-10 | 2020-04-28 | 上海师范大学 | Reactor for full decomposition of volatile organic pollutants based on Fenton-photocatalysis combination |
| CN111389220A (en) * | 2020-04-03 | 2020-07-10 | 唐山三友氯碱有限责任公司 | Treatment method of VOCs (volatile organic chemicals) in paste resin drying tail gas |
| CN113210390A (en) * | 2021-05-25 | 2021-08-06 | 湖北天泰辐照股份有限公司 | Waste gas treatment device is used in cotton production of irradiation crosslinked polyethylene bubble |
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| KR101412692B1 (en) * | 2012-06-25 | 2014-06-27 | (주)태린 | Odor clearing system using plasma |
| CN102764580B (en) * | 2012-07-18 | 2015-08-26 | 浙江天蓝环保技术股份有限公司 | A kind of apparatus and method of white clay/carbide slag-gypsum wet flue gas desulfurizing |
| CN102764583B (en) * | 2012-08-14 | 2015-04-22 | 中电投远达环保工程有限公司 | Process of dual-circulation single-tower desulfurization systems |
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| CN204816109U (en) * | 2015-07-24 | 2015-12-02 | 苏州市鹏月环保工程有限公司 | Organic waste gas's processing apparatus |
| CN105536481B (en) * | 2016-01-22 | 2018-06-26 | 浙江工业大学 | The ultraviolet Fenton oxidation organic waste gas treatment system of cyclic spraying and processing method |
| CN105833724B (en) * | 2016-04-22 | 2018-10-23 | 江苏迪萨机械有限公司 | Regenerated sintering flue gas synchronized desulfuring and denitrifying technique is coupled based on optical-electronic class fenton |
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