JP2005111467A - Diffusion treatment apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a high efficient diffusion treatment apparatus facilitating upsizing and realizing high performance, energy saving, space saving, and maintenance free by improving gas/liquid mixing and stirring efficiency. <P>SOLUTION: The diffusion treatment apparatus 15 installs a cylindrical passage tube 8 internally installs a static mixer 9 which is disposed in such a way that the longitudinal direction is made substantially vertical, and a gas jetting part 12 jetting and supplying gas to the inside of the passage tube 8 through a gas feed line 11 on the downstream side of the passage tube 8. The static mixer 13 is internally installed in the gas jetting part 12. Gas is supplied from the gas jetting part 12, and liquid is introduced inside the passage tube 8 from the lower side of the passage tube 8. The gas and liquid rise in the passage tube 8 in a parallel flow, both of them gas/liquid contact inside the passage tube 8, and they are discharged in the liquid from the upper end side of the passage tube 8. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an aeration treatment apparatus used for water treatment and purification of industrial wastewater, water and sewage, lakes, rivers, groundwater, etc., removal and recovery of foreign substances in gas, and bioreactors (bioreactors). Specifically, it is an operation of mixing gas and liquid, stirring them and bringing them into gas-liquid contact. Aeration of air in water to dissolve oxygen in the air, ammonia dissolved in water, trichloroethane, chloride Emission of volatile substances such as methylene, chlorine, trihalomethane, and other substances such as hydrogen chloride, sulfur dioxide, and powder in the reaction are absorbed, removed by collection, recovered, and used for enzyme reactions and microbial reactions. The present invention relates to an air diffuser.

Conventional air diffusion treatment devices are roughly classified into an air diffusion type (bubble type) and a mechanical stirring type (surface stirring). In particular, as shown in FIG. 13, the aeration type aeration processing apparatus 91 has a large number of aeration plates 93, diffusion cylinders, and the like arranged at the bottom of the aeration tank 92, and these are connected via a blower 94 and an air supply line 95. Then, aeration processing is performed by supplying pressurized air. Further, when a nitrogen compound such as ammonia dissolved in a liquid is diffused and purified and recovered, a packed tower, a plate tower, and the like are often used as shown in FIG. In the case of the stripping treatment system 96 using a packed tower system, liquid is supplied from the upper part of the packed tower 97 and gas is supplied from the lower part of the tower. While the packing 98 arranged in the tower is in gas-liquid contact in countercurrent, volatile substances such as ammonia (NH ₄ ⁺ ) and organic solvent in the liquid are diffused to the gas side to purify and recover the liquid. Processing is in progress.

  Further, a cylindrical exhaust gas dispersion pipe having a large number of gas ejection holes is used as a gas-liquid contact reaction device of a processing device for exhaust gas containing dust and sulfurous acid gas. An exhaust gas treatment method using this exhaust gas dispersion pipe is disclosed in Japanese Patent Laid-Open Nos. 7-308536 and 9-865, but the gas-liquid contact efficiency between the liquid and the bubbles blown out from a large number of gas ejection holes is low. . Moreover, there is a problem of clogging due to adhesion growth of gypsum which is a reaction product.

Furthermore, the conventional air diffuser using a static mixer has low oxygen absorption efficiency due to structural problems, and it is difficult to manufacture an air diffuser with a large diameter (500 mm or more in diameter). But gas-liquid contact efficiency is low. Furthermore, the manufacturing cost is also expensive.
Furthermore, the diameter of the air outlet hole of the air supply pipe arranged below the conventional static mixer is in the range of 10 to 40 mm. One or a plurality of blowout holes are provided on the upper surface of the air pipe.
Since the bubble diameter of the bubbles supplied from the blowout holes is large, the gas-liquid contact efficiency is lowered and the contact time is lengthened.
As a result, the total length of the static mixer becomes high and the equipment cost becomes expensive.

      Japanese Patent Laid-Open No. 2-198694       JP-A-44-8290       JP-A-53-36182       JP-A-5-168882       Japanese Patent Laid-Open No. 7-284642       JP-A-7-308536       JP-A-9-865     S. J. et al. Chen, et al. “Static Mixing Handbook”, published by the Institute for Chemical Research, June 1973     Teruichiro Matsumura, Yasushi Morishima, et al. “Static Mixer: Basics and Applications”, published by Nikkan Kogyo Shimbun, September 30, 1981

  Conventional diffuser treatment apparatuses require a large area because of low oxygen dissolution and absorption efficiency. In addition, for the purpose of mixing and stirring in the aeration tank, air exceeding the required oxygen amount is pressurized and supplied to a diffuser plate or the like. For this reason, a large amount of power is consumed. In addition, conventional diffusion treatment apparatuses such as packed towers and tray towers cause clogging due to adhesion and growth of calcium compounds and microorganisms in the liquid on the packings and trays and require regular maintenance management. . Furthermore, the conventional air diffuser using a static mixer has a low oxygen absorption efficiency and is difficult to increase in size. Therefore, the object of the present invention is to improve the efficiency of gas-liquid contact and aeration, release and reaction treatment, effectively purify wastewater etc. with energy saving, space saving, low cost and maintenance-free, and also dissimilar substances in gas It is to provide an aeration processing apparatus that removes and collects. It is another object of the present invention to provide a bioreactor (bioreactor) that can be used for highly efficient enzyme reactions and microbial reactions.

Department for solving problems

  In order to solve the above-mentioned problems, a first air diffusion treatment device of the present invention comprises a cylindrical passage tube having a stationary mixer disposed substantially perpendicular to the longitudinal direction, and a lower end of the passage tube. A gas ejection part that supplies gas from the side into the passage pipe through an air feeding line is disposed, a spray nozzle is provided in the gas ejection part, and gas is supplied from the gas ejection part of the air feeding pipe, Liquid is introduced into the passage pipe from the lower side of the passage pipe, the gas and the liquid rise in a parallel flow in the passage pipe, and both of them are in gas-liquid contact inside the passage pipe, and the upper end side of the passage pipe Air diffuser that is discharged from the liquid into the liquid. In these diffuser processing devices, a static mixer that performs fluid mixing and stirring using fluid flow energy that does not require mixing and stirring power is disposed, and a gas ejection portion is disposed below the stationary mixer, and the ejection energy thereof. Thus, the liquid is introduced from below the ejection portion. The liquid and the gas flow in parallel from the lower end side to the upper end side of the passage tube and are gas-liquid contact mixed to perform aeration, diffusion, and reaction processing.

  In addition, a second air diffusion treatment device of the present invention for solving the above-mentioned problems includes a cylindrical passage tube provided with a static mixer disposed with its longitudinal direction substantially vertical, and the passage. A gas jet part for supplying gas into the passage pipe is disposed at the lower end side of the pipe, a static mixer is provided in the gas jet part, gas is supplied from the gas jet part, and the lower side of the passage pipe Liquid is introduced into the passage pipe, and the gas and the liquid rise in a parallel flow in the passage pipe, both of which are in gas-liquid contact and mixing inside the passage pipe, and are discharged into the liquid from the upper end side of the passage pipe. Aeration treatment device.

  Further, the stationary mixer disposed in the passage pipe and in the gas ejection portion includes a plurality of right-handed or left-handed spiral blades to form a plurality of fluid passages, The fluid passages communicate with each other through an opening in the longitudinal direction of the blade body, and the blade body is formed of a perforated plate.

The invention's effect

  According to the air diffusion treatment device of the present invention, the power consumption can be greatly reduced by increasing the gas-liquid contact efficiency. Moreover, aeration, dissipation, and reaction processing time are shortened by improving the gas-liquid contact efficiency. In addition, the diffuser processing apparatus has an improved gas supply capacity per unit area, which reduces the horizontal installation area, saves space, and reduces civil engineering and equipment costs. In addition, construction costs such as air supply piping are reduced. Furthermore, since there is no outage due to clogging, maintenance management costs and production management costs are also reduced. Further, since there is no fluid stagnation part (dead space), the size can be easily increased.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a schematic view showing a first embodiment according to the present invention. 2 is a schematic view of the second embodiment, FIG. 3 is a schematic view of the third embodiment, and FIGS. 4A and 4B are an embodiment of a static mixer used in the present invention. FIG. 5 is a basic structural view showing an embodiment of a static mixer used in the present invention. FIG. 6 is a schematic view of the air diffusion processing apparatus according to the first embodiment of the present invention, and FIG. 7 is a schematic view of the air diffusion processing apparatus according to the second embodiment. FIG. 8 is a partial schematic perspective view of a gas ejection portion according to the second embodiment of the present invention. FIG. 9 is a block diagram showing an embodiment in the case where the aeration treatment apparatus according to the present invention is applied to the activated sludge aeration process. FIG. 10 is a block diagram showing an embodiment in the case where the present invention is similarly applied to drainage treatment. FIG. 11 is a block diagram showing an embodiment when similarly applied to an exhaust gas treatment apparatus, FIG. 12 is a block diagram showing an embodiment when similarly applied to a biological reaction using enzymes or microorganisms, and FIG. FIG. 14 is a schematic view showing an aeration treatment apparatus using a diffuser plate system, and FIG. 14 is a schematic view showing a conventional diffusion treatment apparatus using a packing system.

FIG. 1 is a schematic view showing a first embodiment according to the present invention. A set of static mixers 2 is arranged in a cylindrical passage tube 1 arranged with its longitudinal direction substantially vertical, and gas is supplied into the space 3 below it via an air feed line 4. A gas ejection part 5 inscribed in the spray nozzle to be supplied is disposed, and a liquid introduction part 6 for introducing liquid (FL) is further disposed below the gas ejection part 5. In the diffuser 7 thus configured, gas (FG) is jetted and supplied upward from the gas jetting part 5 to the lower end part of the static mixer 2 in the passage pipe 1 via the space part 3. Then, the liquid (FL) is introduced into the space portion 3 in the passage tube 1 from the liquid introduction portion 6 at the lower end of the passage tube 1 by the air lift effect generated by the buoyancy of the gas (FG). The refined gas (FG) and the accompanying liquid (FL) flow in the static mixer 2 while rising in parallel flow, come into gas-liquid contact, and are discharged into the liquid. As a result, the liquid and the gas are sufficiently brought into contact with each other, and aeration, diffusion or chemical reaction proceeds.
The position of the gas injection unit 5 is preferably arranged at a distance in the range of 0.2 to 3 times the diameter of the static mixer 2 from the lower end of the static mixer 2. Further, the liquid introducing portion 6 may be used by providing an opening in the tube wall below the passage tube 1. Thereby, the circulation flow of the liquid is improved.

  In the present embodiment, the gas (FG) that rises by ejecting and supplying gas (FG) upward from the spray nozzle of the gas ejection section 5 from below the static mixer 2 via the air feed line 4. The gas (FG) and the liquid (FL) rising while entraining the liquid (FL) introduced from below the passage tube 1 by the air lift effect generated by the buoyancy of As a result, the gas and liquid are brought into contact with each other by the mixing and stirring functions and discharged into the liquid to be subjected to aeration, emission or chemical reaction treatment. This gas-liquid mixing and stirring operation is performed with no power and high efficiency. Therefore, it becomes energy saving.

  FIG. 2 is a schematic diagram showing a second embodiment of the present invention, as described above. A set of static mixers 9 is arranged in a cylindrical passage tube 8 arranged so that the longitudinal direction is substantially vertical, and a gas ( The gas ejection part 12 which supplies FG) is arrange | positioned. Note that a static mixer 13 is provided in the gas ejection portion 12. Further, a liquid introduction part 14 for introducing a liquid (FL) is disposed below the liquid introduction part 14. In the air diffusion processing device 15 configured as described above, the gas (FG) is installed in the gas ejection portion 12 via the space portion 10 at the lower end portion of the static mixer 9 in the passage tube 1. It is ejected from the static mixer 13 and supplied. The liquid (FL) is introduced into the space portion 10 from the liquid introduction portion 14 at the lower end of the passage tube 8 by an air lift effect generated by the buoyancy of the ejected gas (FG). The atomized gas (FG) and the accompanying liquid (FL) flow in the static mixer 9 while rising in parallel flow, come into gas-liquid contact, and are discharged into the liquid. As a result, the liquid and the gas are sufficiently in gas-liquid contact, and aeration, emission, and chemical reaction proceed.

FIG. 3 is a schematic view showing a third embodiment according to the present invention, as described above. A set of static mixers 17 is arranged in a cylindrical passage tube 16, and a plurality of gas ejection portions 20 for supplying gas (FG) through an air feed line 19 are provided in a space 18 below the set. Are arranged. The air feed line 19 is piped through an opening in the longitudinal direction of the static mixer 17.
In the air diffusion treatment device 21 configured as described above, the gas (FG) is ejected upward from the gas ejection unit 20 via the air feeding line 19 from below the stationary mixer 17, thereby supplying the gas Similarly, the liquid (FL) introduced from the liquid introduction portion at the lower end of the passage pipe 16 flows through the stationary mixer 17 together with the rising gas, and gas-liquid contact proceeds.
As in the second embodiment of the present invention, the gas-liquid contact efficiency is further improved by arranging and using a static mixer in the gas ejection part 20. The number of gas ejection portions 20 can be appropriately adjusted according to the purpose.

  Further, the passage pipe 16 having a large diameter (diameter of 500 mm or more) can be used, the gas supply capacity per area is greatly improved, and the processing time is shortened. In addition, the piping quantity of the pneumatic line is reduced, and the piping work cost and the maintenance management cost are also reduced. Furthermore, the size of the facility can be easily increased.

  FIG. 4 shows an embodiment of a static mixer used in the present invention. FIG. 4A is a schematic perspective view of a passage tube having a right-handed spiral blade body, and FIG. Similarly, it is a schematic perspective view of a passage tube having a left twist blade body. (A) In the figure, three right-handed blade bodies 24 are installed in a static mixer 23 arranged in a cylindrical passage tube 22. The blade body 23 is formed of a perforated plate having a large number of holes 25. The fluid passages 26 communicate with each other over the entire length in the longitudinal direction of the blade body 3 through the opening 27. (B) In the figure, similarly, three left twist blade bodies 30 are provided in a static mixer 29 arranged in a cylindrical passage tube 28. The blade body 30 is formed of a perforated plate having a large number of holes 31. Three fluid passages 32 are provided, and the fluid passages 32 communicate with each other over the entire length of the blade body 30 through the opening 33. In the passage tubes 22 and 28 having the stationary mixers 23 and 29 arranged as shown in FIGS. (A) and (b), the gas (FG) rising in parallel flow from below the passage tubes 22 and 28. And liquid (FL), while flowing through right-handed or left-handed spiral blades, the right and left rotation and splitting, merging, reversing, and shearing stress action are repeated continuously. The liquid is contacted and discharged into the liquid.

  The diameter of the holes (25, 31) drilled in the blade bodies 24, 30 is preferably in the range of 5 to 30 mm, and the aperture ratio of the holes (25, 31) is preferably in the range of 10 to 50%. Furthermore, the rising speed of the gas in the passage pipe (22, 28) is preferably in the range of 0.2 to 10 m / s, more preferably in the range of 0.8 to 5 m / s. Furthermore, the twisting angles (spiral angles) of the blade bodies 24 and 30 are preferably 90 °, 180 °, and 270 °, but may be used at 15 °, 30 °, 45 °, 60 °, and the like. When manufacturing a passage tube having a large diameter (diameter 500 mm or more), a blade body (24, 30) having a small twist angle such as 15 ° or 30 ° is manufactured, and for example, three blade bodies are connected to each other. You may arrange | position and use so that (degree) +30 degree + 30 degree = 90 degree. By doing so, the manufacturing process becomes easy, and the manufacturing process cost is also reduced.

FIG. 5 is a basic structural diagram showing an embodiment of a static mixer used in the present invention.
In FIG. 5, spiral right-handed and left-handed blades 35, 36 having a plurality of fluid passages are arranged in a tubular passage pipe 34 via a tubular space 37. A cylindrical space 38 is formed below the left twisted blade body 36. Note that the arrangement of the right and left twisted blade bodies 35 and 36 in the passage pipe 34 is not limited to this basic structure diagram, and the combination of the arrangement of the blade bodies 35 and 36 depends on the application, for example, right + Left + Right, Right + Left + Right + Left, etc. In the cylindrical passage pipe 34 configured as described above, the gas (FG) and the liquid (FL) rising in parallel flow from below the passage pipe 34 through the space 38 are left-torsion blade bodies 36. During the flow through the space portion 37 and the right twisted blade body 35, both of them are in gas-liquid contact while continuously repeating the rotation and division in the left direction and the right direction, merging, reversing, and shearing stress action. Discharged inside.

  FIG. 6 is a schematic diagram of the air diffusion processing apparatus according to the first embodiment of the present invention. The air diffuser 39 is provided with a stationary mixer 40, and a cylindrical passage pipe 42 having a space 41 and a gas supply section 44 having a gas ejection section 43 are connected to the lower part of the static mixer 40. It is composed of two support plates 45. The air feed pipe 44 has a gas ejection portion 43 provided with a spray nozzle for ejecting gas in the vertical direction, and the opposite side of the gas inlet side is closed. The air diffusion processing device 39 configured in this way is disposed in the liquid, and the gas (FG) is sent from the gas ejection part 43 through the air feed pipe 44 by a blower or a compressor, and the pressurized gas (FG) is passed through the passage pipe. 42 is supplied into the space 41. The liquid (FG) is entrained from the liquid introduction part 46 at the lower end of the passage tube 42 by the air lift effect due to the buoyancy of the supplied gas (FG), and is allowed to flow through the stationary mixer 40 in parallel with the air (FG). Liquid contact is performed and discharged into the liquid, and aeration, release, and reaction process proceed. By using a spray nozzle for the gas ejection part 43, gas (FG) is efficiently disperse | distributed in liquid (FG), and gas-liquid contact efficiency improves. It is preferable to use a spray nozzle having a conical shape and a multilayered shape having a structure capable of being ejected.

FIG. 7 is a schematic diagram of an aeration process apparatus according to the second embodiment of the present invention.
As in FIG. 6, the air diffuser 47 has a cylindrical passage pipe 48 having a space 50 and a liquid introduction part 51 below, an air mixer pipe having a static mixer 49 and a gas ejection part 52. 53, and two support plates 54 that support the passage pipe 48 and the air feed pipe 53. A stationary mixer 55 formed of a plurality of right-handed spiral blades is provided in the gas ejection portion 52. The gas-liquid contact action between the gas (FG) and the liquid (FL) is the same as in FIG. 6 and will be omitted. However, since the static mixer 55 is disposed in the gas ejection portion 52 of the air feeding tube 53, the gas (FG) is refined by the generation of turbulent flow and rises in the space 50 of the passage pipe 48 in parallel with the liquid (FL). The refined gas (FG) and liquid (FL) flow through the static mixer 49 and are brought into gas-liquid contact with high efficiency, discharged into the liquid, and subjected to aeration, emission and reaction processing. proceed.

FIG. 8 is a partial schematic perspective view of the gas ejection portion according to the second embodiment of the present invention.
The air feed pipe 56 is configured in an inverted T shape, and three right-handed spiral blades 58 are provided in the gas ejection portion 57 to form three fluid passages 59. The passage 59 communicates with the entire length in the longitudinal direction of the blade body 58 through the opening 60. The blade body 58 is formed of a perforated plate having a large number of holes 61. In such an air pipe 56, the flow of the gas (FG) passes through a straight flow that goes straight through the opening 60, a spiral flow that flows along the three spiral blade bodies 58, and a hole in the blade body 58. A turbulent flow is generated due to the split flow, and the gas (FG) is refined. By using this refined gas (FG), the gas-liquid contact efficiency is further improved. Note that the twisting direction, twisting angle, combination and hole diameter, aperture ratio of holes, and the like of the blade body 58 can be variously used depending on the application. Further, the installation location of the gas ejection part 57 is preferably a lower position in the range of 0.2 to 3 times the diameter of the passage tube from the lower end side of the static mixer installed in the passage tube.

FIG. 9 is a block diagram showing an embodiment in the case where the aeration treatment apparatus according to the present invention is applied to the activated sludge aeration process.
The air diffuser 62 is disposed at the bottom of the aeration tank 63 storing the raw water. The blower 64 and the air feed line 65 for supplying air to the lower part of the air diffuser 62 and the raw water supply line 66 for supplying the raw water. And the treated water discharge line 67 which discharges treated water is provided. Moreover, it is preferable that the liquid introduction part of the air diffusion treatment device 62 is installed at a position separated from the bottom surface of the aeration tank 63 by 50 to 200 mm. In the air diffusion treatment device 62 configured in this way, the raw water is treated as raw water in the air diffusion treatment device 62 by the buoyancy of air supplied from below the air diffusion treatment device 62 via the blower 64 and the air feed line 65. It is mixed and stirred while flowing in parallel with the air, oxygen in the air is dissolved in the raw water, the raw water is purified batchwise or continuously by aerobic microorganisms, and discharged from the treated water discharge line 67. The
It should be noted that the supply rate of the amount of air flowing through the diffuser processing device 62 from below to above is preferably in the range of 1800 to 21000 m ³ / m ² · hour when the water depth in the aeration tank 63 is 3 to 5 meters. However, More preferably, it is the range of 3600-12000m < ³ > / m < ² > * hour. Further, the aeration / stirring holding area per set when the air diffusion processing device 62 having a diameter of 150 mm is used is 3 to 8 m ² . Further, the discharge pressure of the blower may be a value obtained by adding the pressure loss of the air feed line 65 to the water depth.

FIG. 10 is a block diagram showing an embodiment in the case where the aeration treatment apparatus according to the present invention is applied to the drainage treatment.
The air diffusion processing device 68 according to the present invention is the same as the embodiment of FIG. 9 except that the air diffusion processing device 68 is disposed at the bottom of the diffusion tank 69 and air is supplied to the lower portion of the air diffusion processing device 68. A blower 70 to be supplied, an air feed line 71, a waste water supply line 72 for supplying waste water, and a treated water discharge line 73 for discharging purified treated water are provided. The exhaust line 74 is provided with a cooling device or adsorption device for recovering volatile substances. In the air diffusion treatment device 68 configured in this way, volatile substances such as trichloromethane, trihalomethane, ammonia, chlorine, krypton, etc. in the waste water are transferred to the supplied air side to be diffused and exhausted. It is recovered and purified by a cooling device or an adsorption device via The purified air is released into the atmosphere.
Note that the type of gas supplied is not limited to air, and an inert gas such as nitrogen, helium, argon, or carbon monoxide gas can be used as appropriate. For example, it is possible to remove the dissolved oxygen in the liquid by using nitrogen gas. The supply speed of the gas supplied into the diffuser 68 is preferably in the range of 3,600 to 18,000 when the water depth in the diffusion tank 69 is 1 to 3 meters, more preferably 7,200 to The range is 15,000.

FIG. 11 is a block diagram showing an embodiment when the air diffusion treatment according to the present invention is applied to the exhaust gas treatment.
A plurality of diffuser treatment devices 75 are arranged at predetermined positions in a cylindrical reaction tank 76, and an air supply line 78 for supplying exhaust gas via a blower 77 and water or absorption liquid are supplied below the diffuser treatment device 75. A supply line 79 that discharges the absorbent 80 to the outside of the reaction tank 76, and an exhaust line 82 that exhausts the purified exhaust gas. In the air diffusion treatment device 75 configured as described above, the exhaust gas containing HCl, SO _x , NO _x , NH ₃ , H ₂ S, and dust is diffused through the blower 77 and the air feed line 78. is supplied from below the device _{75, NaOH, C a CO 3} , Ca (OH) 2, Mg (OH) 2 aqueous alkaline solution or _H 2 _SO 4, absorbing liquid comprising an acidic aqueous solution such as HCl and gas-liquid contact such as Then, the chemical reaction process proceeds, and the exhaust gas that has been dissolved or collected in the absorption liquid and cleaned and discharged is released into the atmosphere via the exhaust line 82.
When such a diffuser 75 is applied to the removal and collection of foreign substances in the exhaust gas, the exhaust gas and the liquid are higher than the conventional gas-liquid contact method using a diffuser plate, a dispersion tube, etc. It can be mixed and agitated with efficiency and can be processed for a short time. In addition, the processing speed can be improved to save space and the equipment cost can be reduced. Furthermore, by arranging the diffuser 75 having a large diameter (diameter 500 mm or more), the processing capacity is improved and the space is further saved. Furthermore, since the stagnation region of the fluid does not occur in the diffuser 75, the maintenance and management costs can be reduced by preventing the adhesion and growth of calcium and the like.

FIG. 12 is a block diagram showing an embodiment when the aeration apparatus according to the present invention is applied to a reaction by an enzyme or a microorganism.
The diffuser processing device 83 is disposed at a predetermined position in the cylindrical bioreactor 84, and supplies a gas supply line 85 for supplying a gas below the diffuser processing device 83, a stock solution supply line 86 for supplying a stock solution, and a reaction product. Is provided with a reaction product discharge line 87 for discharging gas, an exhaust line 88 for discharging gas from the top of the bioreactor 84, and a circulating liquid line 89 for circulating the stock solution from the liquid level to the bottom of the biological reaction tank 84. In the bioreactor 84, a catalyst carrier 90 or a biocatalyst carrying an enzyme or a microorganism is present in the liquid. In the air diffusion processing device 83 configured in this way, gas is supplied from below the air diffusion processing device 83 via a gas supply line 85 by a gas supply unit such as a blower, a compressor, or a gas cylinder, and the stock solution is pumped or added. It is supplied via the stock solution supply line 86 by the supply unit of pressure.
The reaction product and gas are discharged to the outside from the reaction product discharge line 87 and the exhaust line 88. In addition, the stock solution forms a circulating flow from the liquid surface of the bioreactor 84 to the lower part by the circulating liquid line 89. The gas and the stock solution flow through the diffuser 83, and the biological reaction proceeds by the biocatalytic function of the enzyme or microorganism in the stock solution. When the gas diffusion treatment device 83 of the present invention is used as a bioreactor, the gas flow rate in the reaction tower can be operated in a high gas flow rate range of 0.5 to 5 m / s as compared with the conventional bubble column system, High oxygen transfer rate can be achieved. Moreover, since it has the function to equalize the flow velocity distribution in the tower, there is no generation of dead space (dead space), the enlargement is facilitated, and the production volume is further improved. Furthermore, generation of gas channeling is prevented, and gas dispersion in a high viscosity liquid is also improved. Furthermore, by improving the reaction rate, space saving and energy saving are achieved, and production costs are reduced. In addition, it can utilize also as a gas-liquid reaction apparatus which does not use a biocatalyst.

FIG. 13 is a schematic view showing an aeration processing apparatus using a conventional diffuser plate method.
In the conventional aeration processing device 91, a large number of diffuser plates 93 are arranged on the bottom surface in the aeration tank 92, and the air is supplied to the large number of diffuser plates 93 via the blower 94 and the air feed line 95. The diffuser plate 93 is formed of a fine porous body and generates fine bubbles. The amount of air blown from a general diffuser plate 93 is 50 to 100 L / min.
FIG. 14 is a schematic diagram showing a conventional diffusion treatment apparatus using a filling method. In the conventional diffusion treatment device 96, a regular or irregular packing is filled in a cylindrical diffusion tower 97. The gas and raw water flow countercurrently through the filler 98, and are subjected to a gas-liquid contact to be diffused.

It is a schematic diagram which shows 1st Example based on this invention. It is a schematic diagram which shows 2nd Example based on this invention. It is a schematic diagram which shows 3rd Example based on this invention. An example of the static mixer used by this invention is shown, (a) A schematic perspective view of the channel | path pipe | tube which has a right-handed spiral blade body. (B) The figure is a schematic perspective view of a passage tube having a left-handed spiral blade similarly. It is a basic structure figure which shows one Example of the static mixer used by this invention. 1 is a schematic view of an aeration processing apparatus according to a first embodiment of the present invention. It is the schematic of the aeration process apparatus which concerns on the 2nd Example of this invention. It is a partial schematic perspective view of the gas ejection part which concerns on 2nd Example of this invention. It is a block diagram which shows the Example at the time of applying the aeration process apparatus which concerns on this invention to the aeration process of an activated sludge method. Similarly, it is a block diagram which shows the Example at the time of applying to the discharge process of waste_water | drain. Similarly, it is a block diagram which shows the Example at the time of applying to an exhaust gas processing apparatus. Similarly, it is a block diagram which shows the Example at the time of applying to the biological reaction using an enzyme or microorganisms. It is a schematic diagram which shows the aeration processing apparatus by the conventional diffuser board system. It is a schematic diagram which shows the diffusion processing apparatus by the conventional filler system.

Explanation of symbols

1, 8, 16, 22, 28, 34, 42, 48: Passage tube 2, 9, 17, 23, 29, 49, 55: Static mixer 3, 10, 18, 38, 41, 50: Space 5, 12, 20, 43, 52, 57: Gas ejection part 6, 14, 46, 51: Liquid introduction part 7, 15, 21, 39, 47, 62, 68, 75, 83: Air diffuser 4, 11, 19, 65, 71, 78, 85: Pneumatic line 44, 53, 56: Pneumatic tube

Claims (3)

  A cylindrical passage pipe provided with a static mixer arranged with its longitudinal direction being substantially vertical, and a gas jet for supplying gas from the lower end side of the passage pipe into the passage pipe through an air feed line A spray nozzle is provided in the gas ejection part, a gas is supplied from the gas ejection part, and a liquid is introduced into the passage pipe from a lower side of the passage pipe. A diffuser treatment apparatus characterized in that the inside of the pipe rises in parallel flow, both of which are in gas-liquid contact mixing inside the passage pipe and discharged into the liquid from the upper end side of the passage pipe.   A cylindrical passage pipe provided with a static mixer arranged with its longitudinal direction substantially vertical, and a gas jet for supplying gas to the lower end side of the passage pipe through the air feed line into the passage pipe A stationary mixer is provided in the gas ejection part, a gas is supplied from the gas ejection part, a liquid is introduced into the passage pipe from a lower side of the passage pipe, and the gas and the liquid are An air diffusion treatment apparatus characterized in that the inside of the passage pipe rises in parallel flow, both of which are in gas-liquid contact and mixing inside the passage pipe and discharged into the liquid from the upper end side of the passage pipe.   The static mixer has a plurality of right-handed (clockwise) or left-handed (counterclockwise) spiral blades inside a cylindrical passage tube through which fluid flows, and the passage tube A plurality of fluid passages are formed inside the fluid passage, the fluid passages communicate with each other through an opening in the longitudinal direction of the blade body, and the blade body is formed of a perforated plate. The aeration process apparatus of any one of Claims.

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