CN111871182A - Fenton combined biological filter system for treating organic waste gas - Google Patents
Fenton combined biological filter system for treating organic waste gas Download PDFInfo
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- CN111871182A CN111871182A CN202010754677.XA CN202010754677A CN111871182A CN 111871182 A CN111871182 A CN 111871182A CN 202010754677 A CN202010754677 A CN 202010754677A CN 111871182 A CN111871182 A CN 111871182A
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- 239000007789 gas Substances 0.000 title claims abstract description 50
- 239000010815 organic waste Substances 0.000 title claims abstract description 26
- 239000007921 spray Substances 0.000 claims abstract description 125
- 239000003814 drug Substances 0.000 claims abstract description 32
- 238000005406 washing Methods 0.000 claims abstract description 14
- 238000001914 filtration Methods 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 43
- 239000000945 filler Substances 0.000 claims description 41
- 238000005507 spraying Methods 0.000 claims description 37
- 239000007788 liquid Substances 0.000 claims description 36
- 238000003860 storage Methods 0.000 claims description 27
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 16
- 238000012856 packing Methods 0.000 claims description 15
- 238000002386 leaching Methods 0.000 claims description 14
- 244000005700 microbiome Species 0.000 claims description 13
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 12
- 229910052599 brucite Inorganic materials 0.000 claims description 12
- 238000011010 flushing procedure Methods 0.000 claims description 8
- 235000003891 ferrous sulphate Nutrition 0.000 claims description 7
- 239000011790 ferrous sulphate Substances 0.000 claims description 7
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 7
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims description 7
- 239000002912 waste gas Substances 0.000 abstract description 74
- 230000000694 effects Effects 0.000 abstract description 12
- 230000008859 change Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000007774 longterm Effects 0.000 abstract description 4
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- 238000000034 method Methods 0.000 description 9
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- 239000012530 fluid Substances 0.000 description 8
- 239000000126 substance Substances 0.000 description 8
- 239000012528 membrane Substances 0.000 description 6
- 239000002957 persistent organic pollutant Substances 0.000 description 6
- 239000010865 sewage Substances 0.000 description 6
- 239000010802 sludge Substances 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 238000000746 purification Methods 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 230000002378 acidificating effect Effects 0.000 description 4
- 239000001569 carbon dioxide Substances 0.000 description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
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- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 3
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- 229910052760 oxygen Inorganic materials 0.000 description 3
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- 150000002505 iron Chemical class 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
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- 238000005272 metallurgy Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/38—Removing components of undefined structure
- B01D53/44—Organic components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/84—Biological processes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- General Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Treating Waste Gases (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention discloses a Fenton combined biofilter system for treating organic waste gas, and belongs to the technical field of waste gas treatment equipment. It includes fenton spray column and biological filter, fixedly connected with intake pipe and spray the outlet duct on the fenton spray column, the one end that the fenton spray column was kept away from to the outlet duct that sprays is connected with biological filter, fixedly connected with filtering pond outlet duct on the biological filter. Fixedly connected with spray assembly in the fenton spray column, be provided with the circulation groove with spray assembly intercommunication outside the fenton spray column, fixedly connected with biofilm carrier and drip washing subassembly in the biofilter, the biofilter is provided with the circulation basin with drip washing subassembly intercommunication outward, be provided with pH on-line measuring appearance in the circulation groove, be connected with on the circulation groove and add the medicine subassembly. The invention can adapt to the change of the components, flow and concentration of the waste gas along with the production process, and has long-term stable and effective treatment effect on the organic waste gas.
Description
Technical Field
The invention relates to a Fenton combined biofilter system for treating organic waste gas, and belongs to the technical field of waste gas treatment equipment.
Background
The waste gas is the poisonous and harmful gas discharged by human in the production and living process, the discharge amount of the industrial waste gas is increasing along with the rapid development of the economy, especially the development of the chemical industry and the manufacturing industry such as chemical industry, metallurgy, medicine, petroleum, electronics, machinery and the like, the waste gas contains various pollutants and peculiar smell components, and the direct discharge of the waste gas can have serious influence on the environment and the human health. The treatment of exhaust gases to achieve relevant emission standards is a problem faced by many enterprises. Industrial waste gas includes organic waste gas and inorganic waste gas, the components of organic waste gas include harmful gases such as alcohols, ethers, hydrocarbons, benzene series, ketones, etc., and the treatment method for organic waste gas includes activated carbon absorption method, combustion method, photocatalytic method, biological purification method, etc., but in practical application, the activated carbon absorption method has high cost for maintaining equipment operation, the combustion method has poor treatment effect on part of organic waste gas, and is easy to generate secondary pollution, and the photocatalytic method and the biological purification method both require the waste gas to be in full contact with reactants, catalysts or microorganisms. The composition, flow and concentration of the waste gas actually generated in the industry change greatly in the production process, which causes certain difficulty for the existing organic waste gas treatment technology.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a Fenton combined biofilter system for treating organic waste gas, aiming at the concentration of less than 1000mg/m3The organic waste gas can be stably and effectively treated for a long time, and a good treatment effect is kept.
The purpose of the invention is realized by the following technical scheme: the utility model provides a handle biological filter system is united to fenton of organic waste gas, includes fenton spray column and biological filter, fixedly connected with intake pipe and spray the outlet duct on the fenton spray column, the one end that the fenton spray column was kept away from to the spray outlet duct is connected with biological filter, fixedly connected with filtering pond outlet duct on the biological filter. Fixedly connected with spray assembly in the fenton spray column, be provided with the circulation groove with spray assembly intercommunication outside the fenton spray column, the circulating pipe of fenton spray column bottom fixedly connected with and circulation groove intercommunication, fixedly connected with biofilm carrier and drip washing subassembly in the biological filter, the biological filter is provided with the circulation basin with drip washing subassembly intercommunication outward, biological filter bottom and circulation basin intercommunication, be provided with pH on-line measuring appearance in the circulation groove, be connected with on the circulation groove and add the medicine subassembly.
Utilize the fenton spray column to unite with the biological filter, when handling waste gas, waste gas gets into the fenton spray column along the intake pipe earlier in, spray the fenton spray liquid to waste gas by the spray assembly, organic waste gas in the waste gas fully contacts with the fenton spray liquid and reacts, contains the HO that has very high electrode potential in the fenton spray liquid, has very strong oxidizing power and electron affinity, makes the conjugation system structure of organic component in the waste gas oxidized and breaks, also makes organic matter molecule finally convert into micromolecules such as carbon dioxide and water. The Fenton spray tower is utilized to remove organic components in the waste gas or change the structure of organic matters, so that the aim of reducing the concentration of organic gas in the waste gas is fulfilled, and good conditions are created for the subsequent purification of the biological filter. Waste gas enters the biological filter along the spraying outlet pipe, and the leaching component above the biological filter intermittently sprays and wets the filler to provide a proper growth and propagation environment for microorganisms, so that the microorganisms form a microbial film on the surface of the biological filler, and the absorption of organic components in the waste gas is promoted. Volatile organic components in the waste gas and oxygen in the air reach the surface of the biological membrane through the gas membrane by the gas phase body through diffusion, organic matters and oxygen are adsorbed on the surface of the wet biological membrane and are captured by microbial cells and enter the biological body, organic pollutants are decomposed and utilized by microbes as energy sources and nutrient substances through biochemical reaction and are finally converted into simple inorganic matters such as carbon dioxide, water and the like, the generated carbon dioxide is desorbed and diffused into the gas phase body by the surface of the biological membrane, and the waste gas is purified to reach the standard and then is discharged along the outlet pipe of the filter tank. According to the invention, the purification treatment of the waste gas is realized by utilizing the Fenton spray tower and the biological filter, the waste gas stays in the Fenton spray tower for 4-7 s and stays in the biological filter for 15-25 s, so that sufficient reaction time is provided for the treatment of the waste gas, the waste gas purification device can adapt to the changes of the components, flow and concentration of the waste gas, and a stable waste gas treatment effect is provided.
Further, go back the even subassembly that admits air of fixedly connected with in the biofilter, even subassembly that admits air is located the biofilm carrier and keeps away from one side of drip washing subassembly, even subassembly that admits air is including admitting air the fan, the axis of admitting air the fan extends along vertical direction, the one side of admitting air the fan towards the biofilm carrier is provided with the gas homogenizing board, a plurality of gas homogenizing holes have evenly been seted up on the gas homogenizing board. Waste gas is along spraying the outlet duct and getting into the biofilter after, through the dispersion of stirring of admitting air fan, evenly gets into the biofilm carrier along the gas equalization hole on the gas equalization board, is favorable to avoiding being close to spray outlet duct junction one side waste gas concentration and is higher than keeping away from and spray outlet duct one side, and then avoids the phenomenon that the regional treatment effect that waste gas concentration is high worsens to take place, is favorable to the stability of improve equipment system processing waste gas.
Further, still include the fan, fan fixed connection utilizes the fan to improve exhaust pressure on the filtering pond outlet duct to overcome fenton spray column, biological filter and pipeline resistance, maintain the normal transport and the discharge of waste gas.
Furthermore, the spraying assembly comprises a first spraying pipe and a second spraying pipe, the tail end of the first spraying pipe is located in the air inlet pipe, and a spraying opening of the first spraying pipe faces the air inlet direction of the air inlet pipe. The tail end of the second spray pipe is positioned in the Fenton spray tower, and a packing layer is fixedly connected between the connection part of the second spray pipe and the air inlet pipe. At the in-process that waste gas got into the fenton spray column along the intake pipe, waste gas meets with first shower earlier, first shower sprays the liquid medicine towards the direction of admitting air of waste gas, make waste gas and the fenton spray the preliminary mixed contact of liquid, after waste gas got into the fenton spray column, upwards get into the packing layer, the second shower of packing layer top sprays the liquid medicine downwards, it is moist with the packing layer, waste gas in the packing layer with the liquid medicine fully contact that sprays, realize the oxidation treatment of organic composition in the liquid medicine to waste gas.
Furthermore, the biological filler comprises a bearing layer, a brucite layer and a volcanic rock layer, wherein the brucite layer is positioned between the bearing layer and the volcanic rock layer, the volcanic rock layer is positioned on one side of the biological filler close to the leaching component, and microorganisms are inoculated on the volcanic rock layer. The supporting layer is positioned at the bottommost part of the biological filler, the supporting layer has a supporting and supporting effect on the brucite layer and the volcanic rock layer above the supporting layer, and the filler of the supporting layer can adopt gravel, pebbles, ceramsite and the like. Because the oxidation reaction condition of the Fenton reagent is acidic, the Fenton spraying liquid is an acidic solution, acidic water mist possibly exists in waste gas discharged from the Fenton spraying tower, the performance of the brucite layer is stable, residual acidic components in the waste gas can be removed, the environment suitable for microorganism propagation on a biological membrane can be maintained, and the effect of treating the waste gas is further ensured. The volcanic rock layer filler is natural porous, has rough and microporous surface, and is particularly suitable for the growth and propagation of microorganisms on the surface of the volcanic rock layer filler to form a biological film.
Furthermore, the biological filter tank is internally and fixedly connected with a filler support matched with the biological filler, the biological filter tank is provided with a filler inlet, the biological filler is supported and fixed by the filler support, and the filler inlet is used for placing the biological filler into the biological filter tank.
Further, the medicine adding assembly comprises a sulfuric acid storage tank, a hydrogen peroxide solution storage tank and a ferrous sulfate solution storage tank, and the sulfuric acid storage tank, the hydrogen peroxide solution storage tank and the ferrous sulfate solution storage tank are respectively connected with the circulating tank through water pumps. Through setting up the independent medicament storage tank of each component, conveniently add reagent to the fenton spray column to in time adjust the pH value that sprays the liquid medicine, reduce the consumption of molysite and the production of mud, be favorable to maintaining the high efficiency that fenton sprays the pollutant in the liquid degradation waste gas.
Furthermore, be fixedly connected with respectively in fenton spray column and the biological filter and spray defroster and filtering pond defroster, spray the defroster and be located the second shower and spray between the outlet duct, the filtering pond atomizer is located between drip washing subassembly and the filtering pond outlet duct. The spraying demister and the filter demister are used for removing water mist contained in the waste gas respectively, so that acid water mist contained in the waste gas entering the biological filter is reduced, and the discharged waste gas is prevented from carrying water mist.
Further, spray the defroster and spray between the outlet duct and still fixedly connected with defogging wash the piece, the defogging washes the one end fixedly connected with flush fluid storage tank that the piece stretches out the fenton spray column. Utilize the defogging to wash the piece and spray the flush fluid to the defroster, realize the washing to the defroster, reduce the long-term stay of the droplet in the waste gas on the defroster, and then reduce the erosion loss of liquid medicine to spraying the defroster.
Furthermore, all seted up the access hole on fenton spray column and the biological filter, make things convenient for the staff to in time overhaul and maintain relevant equipment to improve spray column's operating stability.
The invention has the beneficial effects that:
the Fenton spray tower is combined with the biological filter, and organic pollutants in the waste gas are effectively degraded after the oxidation reaction of the Fenton spray tower and the biochemical reaction of microorganisms. The equipment system of the invention has simple structure and reasonable layout, and aims at the concentration less than 1000mg/m3The organic waste gas can adapt to the condition that the waste gas component, flow and concentration change is large in industry, the long-term stable and effective treatment is realized, and the good treatment effect is kept. Meanwhile, the exhaust gas is uniformly fed by the uniform air feeding assembly, and the brucite layer removes acid water mist carried in the exhaust gas, so that the long-term stability of the operation of the biological filter is improved, the efficient and stable operation of the whole system is promoted, and the treatment effect is ensured.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the fenton spray tower of the present invention.
FIG. 3 is a schematic structural view of a biofilter according to the present invention.
In the figure, 1, a Fenton spray tower; 2. a biological filter; 3. an air inlet pipe; 4. a spraying air outlet pipe; 5. an air outlet pipe of the filter tank; 6. a spray assembly; 61. a first shower pipe; 62. a second shower pipe; 7. a circulation tank; 8. a circulation pipe; 9. biological fillers; 91. a support layer; 92. a brucite layer; 93. a volcanic rock formation; 10. leaching the assembly; 11. a circulating water tank; 12. a pH on-line detector; 13. a dosing assembly; 131. a sulfuric acid storage tank; 132. a hydrogen peroxide storage tank; 133. a ferrous sulfate solution storage tank; 14. a uniform air intake assembly; 141. an air inlet fan; 142. a gas homogenizing plate; 15. a fan; 16. a filler layer; 17. supporting with a filler; 18. a filler inlet; 19. a spray demister; 20. a demister in the filter; 21. a demisting flushing piece; 22. a flushing liquid storage tank; 23. and (6) overhauling holes.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1 and 2, the present invention provides a technical solution: the utility model provides a handle 2 systems of biological filter of fenton joint of organic waste gas, includes fenton spray column 1 and biological filter 2, fixedly connected with intake pipe 3 and spray outlet duct 4 on the fenton spray column 1, and 3 fixed connection of intake pipe are on the lateral wall of fenton spray column 1, spray outlet duct 4 fixed connection on the top of fenton spray column 1. The right-hand member that sprays outlet duct 4 and the lateral wall fixed connection of biological filter 2, the top of biological filter 2 then fixedly connected with filtering pond outlet duct 5, waste gas follow intake pipe 3 and get into fenton spray column 1, in spraying outlet duct 4 got into biological filter 2 along spraying after the spraying treatment of fenton spraying liquid, again through the biochemical reaction of microorganism, discharge from filtering pond outlet duct 5. Still fixedly connected with fan 15 on filtering pond outlet duct 5, fan 15 of this embodiment adopts centrifugal fan 15 to improve exhaust pressure, in order to overcome fenton spray column 1, biological filter 2 and pipeline resistance, maintain the normal transport and the discharge of waste gas.
As shown in fig. 1 and fig. 2, a spray assembly 6 is fixedly connected in the fenton spray tower 1, a circulation groove 7 communicated with the spray assembly 6 is arranged outside the fenton spray tower 1, the spray assembly 6 of the embodiment includes a first spray pipe 61 and a second spray pipe 62, the lower end of the first spray pipe 61 is communicated with the circulation groove 7, the upper end of the first spray pipe 61 extends into the air inlet pipe 3, and a spray opening on the first spray pipe 61 faces the air inlet direction of the air inlet pipe 3. The lower end of the second spraying pipe 62 is communicated with the circulating groove 7, the upper end of the second spraying pipe extends into the Fenton spraying tower 1, a packing layer 16 is fixedly connected between the second spraying pipe 62 and the connection part of the air inlet pipe 3 and the Fenton spraying tower 1, namely, the second spraying pipe 62 sprays liquid medicine to the packing layer 16, so that the waste gas is fully contacted with the liquid medicine in the packing layer 16. The bottom of the Fenton spray tower 1 is fixedly connected with a circulating pipe 8 communicated with a circulating groove 7, liquid medicine which is fully contacted with waste gas and reacts falls on the bottom of the Fenton spray tower 1, and then returns to the circulating groove 7 along the circulating pipe 8 for recycling. In order to ensure the high efficiency of the recycled chemical solution, a pH on-line detector 12 is disposed in the circulation tank 7 for monitoring the pH of the sprayed chemical solution in real time so as to maintain the pH of the chemical solution within the range of the acidic condition required for the fenton oxidation reaction.
As shown in fig. 1 and 2, the circulation tank 7 is further connected with a dosing assembly 13, the dosing assembly 13 of this embodiment includes a sulfuric acid storage tank 131, a hydrogen peroxide storage tank 132, and a ferrous sulfate solution storage tank 133, the sulfuric acid storage tank 131, the hydrogen peroxide storage tank 132, and the ferrous sulfate solution storage tank 133 are respectively connected with the circulation tank 7 through a water pump, and new chemicals are added into the circulation tank 7 in time to maintain the high efficiency of the fenton liquid medicine for degrading organic pollutants. The Fenton spray tower 1 is also fixedly connected with a spray demister 19, the spray demister 19 is positioned between the second spray pipe 62 and the spray outlet pipe 4, and the spray demister 19 is utilized to remove water mist contained in the waste gas, so that acid water mist contained in the waste gas entering the biological filter 2 is reduced. Spray 19 mist eliminator and spray outlet duct 4 between still fixedly connected with defogging washing 21, the defogging washing 21 the upper end to spray mist eliminator 19 and spray the flush fluid, the lower extreme that stretches out fenton spray column 1 then fixedly connected with flush fluid storage tank 22, provide the flush fluid for defogging washing 21 by flush fluid storage tank 22, the flush fluid that this embodiment adopted is the clear water.
As shown in figures 1 and 3, a biological filler 9 and a leaching component 10 are fixedly connected in the biological filter 2, the biological filler 9 is positioned in the middle of the biological filter 2, and the leaching component 10 is positioned above the biological filler 9 and close to the top of the biological filter 2. The biological filler 9 of the embodiment comprises a supporting layer 91, a brucite layer 92 and a volcanic rock layer 93 which are sequentially arranged from bottom to top, wherein the supporting layer 91 provides supporting force for the brucite layer 92 and the volcanic rock layer 93 at the bottom, the brucite layer 92 can remove a small amount of acid water mist in waste gas, and microorganisms are inoculated on the volcanic rock layer 93 to form a biological film capable of absorbing and treating organic pollutants in the waste gas. It evenly admits air the subassembly 14 still to fixedly connected with in biofilter 2, evenly admit air the subassembly 14 and be located the below of biofilm carrier 9, the even subassembly 14 of admitting air of this embodiment includes the air inlet fan 141, the axis of air inlet fan 141 extends along vertical direction, the air inlet fan 141 is rotatory along the horizontal direction promptly, make the waste gas that gets into biofilter 2 homodisperse under the effect of air inlet fan 141, air inlet fan 141 top is provided with gas-homogenizing plate 142, a plurality of gas-homogenizing holes have evenly been seted up on the gas-homogenizing plate 142, waste gas after the dispersion gets into in the biofilm carrier 9 along gas-homogenizing hole. Here, the air supply fan 141 may be driven by a driving member such as a motor, or may be driven by exhaust gas to rotate. The biological filter 2 is also fixedly connected with a filler support 17 matched with the biological filler 9, wherein the matching means that the width of the filler support 17 is consistent with that of the biological filler 9, so that the filler support 17 can support and fix the biological filler 9, and the top of the biological filter 2 is provided with a filler inlet 18 for installing the biological filler 9.
As shown in fig. 3, a circulating water tank 11 communicated with the leaching assembly 10 is arranged outside the biological filter 2, the bottom of the biological filter 2 is communicated with the circulating water tank 11, the circulating water tank 11 provides circulating water for the leaching assembly 10, and the leaching assembly 10 intermittently sprays water to the biological filler 9 to keep the surface of the biological filler 9 wet, so as to provide good conditions for growth and propagation of microorganisms and adsorption of organic pollutants. A water pump, a Y-shaped filter screen and a water pressure gauge are fixedly connected to a water delivery pipeline of the leaching assembly 10, the water pump pumps water from the circulating water tank 11 to a spray head of the leaching assembly 10, the Y-shaped filter screen removes sludge or other impurities carried in the water in circulation, and the water pressure gauge is used for monitoring the delivered water pressure. A filter chamber demister 20 is also fixedly connected in the biological filter chamber 2, and the filter chamber demister 20 is positioned between the leaching component 10 and the filter chamber air outlet pipe 5 and is used for removing water mist contained in the treated waste gas and facilitating the direct discharge of the treated waste gas.
As shown in fig. 1 and 3, in order to facilitate regular maintenance and timely maintenance of the system of the present invention, three access holes 23 are formed in the fenton spray tower 1 and the biological filter 2, the three access holes 23 are respectively formed in the side wall of the air inlet pipe 3, between the tower body second spray assembly 6 and the packing layer 16, and between the exhaust gas outlet and the demisting flushing part 21, and the access hole 23 in the biological filter 2 is formed in the side wall of the biological filter 2 at a position corresponding to the biological packing 9, so that maintenance and repair of key assemblies in the fenton spray tower 1 and the biological filter 2 are facilitated. Meanwhile, the circulation tank 7 and the circulation water tank 11 are respectively and fixedly connected with water outlet pipes which are communicated with each other, the two water outlet pipes are mixed and then led to the sewage treatment equipment, the circulation liquid medicine with the residual medicine in the circulation tank 7 and the circulation liquid water with the sludge in the circulation water tank 11 enter the sewage treatment equipment along the water outlet pipes, and the circulation liquid medicine and the circulation liquid water are discharged after reaching the standard after treatment.
When the device is used, the centrifugal fan 15 on the air outlet pipe 5 of the filter tank is opened, waste gas is introduced into the Fenton spray tower 1 from the air inlet pipe 3, and liquid medicine sprayed by the first spray pipe 61 is in contact with and mixed with the waste gas, so that primary oxidation degradation treatment of pollutants in the waste gas is realized. Waste gas mixed with the liquid medicine enters the tower body of the Fenton spray tower 1 along the air inlet pipe 3, the waste gas upwards enters the packing layer 16, and the liquid medicine downwards flows to the bottom of the Fenton spray tower 1 and then enters the circulating groove 7 along the circulating pipe 8. The second spraying pipe 62 sprays the liquid medicine to the packing layer 16, and the waste gas and the liquid medicine are fully contacted and reacted in the packing layer 16, so that the oxidative degradation treatment of the organic pollutants in the waste gas is realized. The treated waste gas continuously upwards contacts with the liquid medicine sprayed by the second spraying pipe 62 in a convection way, and then is discharged from the spraying gas outlet pipe 4 after the demisting function of the spraying demister 19. The liquid medicine flowing down from the packing layer 16 also returns to the circulating tank 7 along the circulating pipe 8 to form circulation of the liquid medicine between the circulating tank 7 and the Fenton spray tower 1, the pH value of the liquid medicine in circulation is monitored in real time by using the pH online detector 12, the sulfuric acid solution is added into the circulating tank 7 in time, consumption of iron salt in the liquid medicine and generation of sludge are reduced, and blockage of the circulating pipe 8 is prevented. By adding medicine subassembly 13 and regularly pumping new fenton reagent to circulation tank 7 in to keep the treatment effect of liquid medicine to waste gas, the liquid medicine that has become invalid in the circulation tank 7 and the outlet pipe row to sewage treatment device of the flush fluid accessible circulation tank 7 bottom that washes the defroster and produce.
Waste gas enters the biological filter 2 along the spraying outlet pipe 4, is dispersed by stirring of the inlet fan 141, and evenly enters the biological filler 9 along the uniform air holes on the uniform air plate 142, a small amount of acid water mist in the waste gas is removed by the brucite layer 92, organic components and oxygen in the waste gas are adsorbed on the surface of a biological membrane on the volcanic rock layer 93, the organic components are converted into simple inorganic substances such as carbon dioxide, water and the like through decomposition and utilization of microorganisms, and the treated waste gas is upwards discharged along the outlet pipe 5 of the filter after the demisting effect of the demister 20 of the filter. And the leaching component 10 in the biological filter 2 intermittently sprays the biological filler 9 to wet the surface of the volcanic rock stratum 93 and provide a proper growth and propagation environment for microorganisms, and the leached water liquid flows downwards to the bottom of the biological filter 2 and flows into the circulating water tank 11. In addition, the biological filler 9 is periodically back-flushed by the leaching component 10, the generated sludge flows into a sewage treatment facility together with back-flushing water, the sludge is discharged to a sewage station after being precipitated by a flocculating agent, the sludge is dewatered, and the flushing water is discharged to the sewage station for treatment. The invention provides a stable waste gas treatment effect aiming at adapting to the change of waste gas components, flow and concentration.
The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the invention is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a handle biological filter system is united to fenton of organic waste gas which characterized in that: the biological filter comprises a Fenton spray tower (1) and a biological filter (2), wherein an air inlet pipe (3) and a spray air outlet pipe (4) are fixedly connected to the Fenton spray tower (1), one end, far away from the Fenton spray tower (1), of the spray air outlet pipe (4) is connected with the biological filter (2), and a filter air outlet pipe (5) is fixedly connected to the biological filter (2); fixedly connected with spray assembly (6) in fenton spray column (1), be provided with circulation groove (7) with spray assembly (6) intercommunication outside fenton spray column (1), circulating pipe (8) of fenton spray column (1) bottom fixedly connected with and circulation groove (7) intercommunication, fixedly connected with biofilm carrier (9) and drip washing subassembly (10) in biological filter (2), biological filter (2) are provided with circulation basin (11) with drip washing subassembly (10) intercommunication outward, biological filter (2) bottom and circulation basin (11) intercommunication, be provided with pH on-line measuring appearance (12) in circulation groove (7), be connected with on circulation groove (7) and add medicine subassembly (13).
2. A fenton integrated biofilter system for treating organic waste gas according to claim 1, wherein: the utility model discloses a biological filter, including biofilter (2), even air inlet assembly (14) of still fixedly connected with in biofilter (2), even air inlet assembly (14) are located biofilm carrier (9) and keep away from one side of drip washing subassembly (10), even air inlet assembly (14) are including admitting air fan (141), the axis of admitting air fan (141) extends along vertical direction, one side of admitting air fan (141) towards biofilm carrier (9) is provided with gas homogenizing plate (142), a plurality of gas homogenizing holes have evenly been seted up on gas homogenizing plate (142).
3. A fenton integrated biofilter system for treating organic waste gas according to claim 1, wherein: the filter is characterized by further comprising a fan (15), wherein the fan (15) is fixedly connected to the filter outlet pipe (5).
4. A fenton integrated biofilter system for treating organic waste gas according to claim 1, wherein: the spraying assembly (6) comprises a first spraying pipe (61) and a second spraying pipe (62), the tail end of the first spraying pipe (61) is positioned in the air inlet pipe (3), and a spraying opening of the first spraying pipe (61) faces to the air inlet direction of the air inlet pipe (3); the tail end of the second spray pipe (62) is positioned in the Fenton spray tower (1), and a packing layer (16) is fixedly connected between the joint of the second spray pipe (62) and the air inlet pipe (3).
5. A fenton integrated biofilter system for treating organic waste gas according to claim 1, wherein: the biological filler (9) comprises a bearing layer (91), a brucite layer (92) and a volcanic layer (93), the brucite layer (92) is positioned between the bearing layer (91) and the volcanic layer (93), the volcanic layer (93) is positioned on one side of the biological filler (9) close to the leaching assembly (10), and microorganisms are inoculated on the volcanic layer (93).
6. A fenton integrated biofilter system for treating organic waste gas according to claim 1, wherein: the biological filter (2) is also fixedly connected with a filler support (17) matched with the biological filler (9), and the biological filter (2) is provided with a filler inlet (18).
7. A fenton integrated biofilter system for treating organic waste gas according to claim 1, wherein: the dosing assembly (13) comprises a sulfuric acid storage tank (131), a hydrogen peroxide storage tank (132) and a ferrous sulfate solution storage tank (133), wherein the sulfuric acid storage tank (131), the hydrogen peroxide storage tank (132) and the ferrous sulfate solution storage tank (133) are respectively connected with the circulating tank (7) through water pumps.
8. A fenton integrated biofilter system for treating organic waste gas according to claim 1, wherein: fenton spray column (1) and biological filter (2) are interior fixedly connected with respectively and spray defroster (19) and filtering pond defroster (20), spray defroster (19) and be located second shower (62) and spray between outlet duct (4), the filtering pond atomizer is located between drip washing subassembly (10) and filtering pond outlet duct (5).
9. A fenton integrated biofilter system for treating organic waste gas according to claim 8, wherein: and a demisting flushing piece (21) is fixedly connected between the spraying demister (19) and the spraying air outlet pipe (4), and one end of the demisting flushing piece (21) extends out of the Fenton spraying tower (1) and is fixedly connected with a flushing liquid storage tank (22).
10. A fenton integrated biofilter system for treating organic waste gas according to claim 1, wherein: and the Fenton spray tower (1) and the biological filter (2) are both provided with access holes (23).
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| CN202010754677.XA CN111871182A (en) | 2020-07-30 | 2020-07-30 | Fenton combined biological filter system for treating organic waste gas |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010754677.XA CN111871182A (en) | 2020-07-30 | 2020-07-30 | Fenton combined biological filter system for treating organic waste gas |
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| CN111871182A true CN111871182A (en) | 2020-11-03 |
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| CN202010754677.XA Withdrawn CN111871182A (en) | 2020-07-30 | 2020-07-30 | Fenton combined biological filter system for treating organic waste gas |
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Application publication date: 20201103 |