JP7414333B2 - Air diffuser and water treatment equipment - Google Patents

Description

The present invention relates to an aeration device used in a water treatment device, and a water treatment device using the aeration device.

BACKGROUND ART An air diffuser installed in a water treatment device such as a sewage treatment facility is a device for mixing fine air bubbles into a liquid, for example. As an example of a technology related to such an air diffuser, there is a technology described in Patent Document 1 below. This Patent Document 1 describes a configuration in which a static mixer is installed inside a vertically arranged cylindrical passage pipe, and a gas jet port is arranged in a space below the mixer via a gas phase line. There is. As a result, due to the air lift effect generated by the buoyancy of the gas ejected from the gas outlet, the liquid is introduced into the space from the liquid introduction part on the lower end side of the passage pipe and flows through the static mixer, and the liquid and gas are combined. It is said that there is sufficient gas-liquid contact to allow aeration, dissipation, and chemical reactions to proceed. Further, as a static mixer, one is described in which a plurality of blade bodies each having a large number of holes are disposed inside a passage pipe in a right-handed or left-handed helical shape. As a result, while the gas and liquid flow through the spiral blade, division, merging, reversal, and shear stress action are continuously repeated, and the two come into gas-liquid contact and are discharged into the liquid. There is.

Japanese Patent Application Publication No. 2005-144425

The liquid containing microbubbles (hereinafter referred to as microbubble-containing liquid) produced by the above-mentioned air diffuser is effective in decomposing organic matter and sterilizing, so it can be used in various water treatments such as purification. It is used in For this reason, there is a need for an aeration device with even higher water treatment efficiency.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an aeration device capable of improving water treatment efficiency, and a water treatment device using this aeration device.

To achieve such an object, the present invention is composed of a tubular body and a plurality of blade bodies each having a plurality of perforations, and the plurality of blade bodies are wound in the same manner while maintaining a flow path in the center. The present invention is an air diffuser including a stirring member arranged spirally in the direction, and a magnetizing member installed inside the tubular body to magnetize the fluid inside the tubular body.

According to the present invention, it is possible to provide an aeration device that can improve water treatment efficiency, and a water treatment device using this aeration device.

It is a perspective view of the air diffuser concerning a 1st embodiment. FIG. 1 is a diagram showing the overall configuration of an air diffuser according to a first embodiment. FIG. 2 is a side view of main parts of the air diffuser according to the first embodiment. It is a cross-sectional perspective view of the stirring member provided in the air diffuser of each embodiment. It is a top view explaining the stirring member provided in the air diffuser of each embodiment. It is a top view of the magnetization member provided in the air diffuser concerning a 1st embodiment. It is a figure showing the whole structure of an air diffuser concerning a 2nd embodiment. It is a top view of the magnetization member provided in the air diffuser concerning 2nd Embodiment. It is a figure showing the whole structure of an air diffuser concerning a 3rd embodiment. It is a figure showing the whole structure of the water treatment device concerning a 4th embodiment. It is a figure showing the whole structure of an air diffuser concerning a 5th embodiment. It is a cross-sectional perspective view of the air diffuser concerning a 5th embodiment. It is a figure showing the whole structure of the water treatment device concerning a 6th embodiment. It is a figure showing the whole structure of the water treatment device concerning a 7th embodiment. It is a figure which shows the whole structure of the air diffuser based on 8th Embodiment. It is a figure showing the whole structure of the water treatment device concerning a 9th embodiment. It is a figure showing the whole structure of the water treatment device concerning a 10th embodiment.

EMBODIMENT OF THE INVENTION Hereinafter, each embodiment of the air diffuser and water treatment apparatus to which this invention is applied is described based on drawings. In addition, in each embodiment described below, the same components are given the same reference numerals, and some overlapping explanations will be omitted.

≪First embodiment≫
-Air diffuser-
FIG. 1 is a perspective view of an air diffuser 1 according to the first embodiment. FIG. 2 is a diagram showing the overall configuration of the air diffuser 1 according to the first embodiment. The air diffuser 1 shown in these figures is installed and used at the bottom of a liquid storage tank, and is used to disperse gas [G] into liquid [L] stored in the storage tank. Such an aeration device 1 includes a gas supply pipe 10, a stirring member 20 provided in the gas supply pipe 10 (see FIG. 2), a flow pipe 30 communicating with the gas supply pipe 10, and a flow pipe 30 inside the flow pipe 30. A magnetizing member 40 (see FIG. 2) is provided. These are constructed as follows.

<Gas supply pipe 10>
The gas supply pipe 10 is a tubular body configured as an injection nozzle that ejects compressed gas [G]. This gas supply pipe 10 has one opening as a gas introduction port 10a connected to a gas supply source 200, and the other opening as a gas ejection port 10b for ejecting gas into a flow path pipe 30, which will be described later.

Such a gas supply pipe 10 has an outer diameter smaller than the inner diameter of the flow path pipe 30. Further, the gas supply pipe 10 is supported from four directions with respect to the flow pipe 30 by, for example, four plate-shaped supports 11, and is held with its central axis substantially coaxial with the flow pipe 30. That's it. These supports 11 are arranged parallel to the axial direction of the flow path tube 30 without hindering the inflow of the liquid [L] into the flow path tube 30.

FIG. 3 is a side view of essential parts of the air diffuser according to the first embodiment, and is a side view of the gas supply pipe 10. As shown in this figure, the outer circumferential wall of the gas supply pipe 10 on the side of the gas introduction port 10a has a threaded structure for screwing the supply line from the gas supply source 200. Note that the connection between the gas supply pipe 10 and the gas supply source 200 is not limited to a screw connection, but may be a flange connection.

<Stirring member 20>
The stirring member 20 is a member disposed inside the gas supply pipe 10, and finely disperses the compressed gas [G] introduced into the gas supply pipe 10 from the gas supply source 200 to form a flow path pipe. 30 (see FIGS. 1 and 2). Further, the stirring member 20 has a function of generating a cavitation effect depending on the amount of gas supplied.

FIG. 4 is a cross-sectional perspective view of the stirring member 20 provided in the air diffuser of each embodiment, and is a central vertical cross-sectional perspective view along the axial direction of the gas supply pipe 10 at the position where the stirring member 20 is arranged. be. Moreover, FIG. 5 is a plan view explaining the stirring member 20 provided in the air diffuser of each embodiment, and is a view of the gas supply pipe 10 viewed from the gas jet port 10b side. As shown in FIGS. 4 and 5, and FIG. 3 described above, the stirring member 20 has a configuration in which a plurality of blade bodies 21 are installed inside the gas supply pipe 10. Each blade body 21 is formed as a fan-shaped perforated plate having a plurality of perforations 21a.

Each of these vanes 21 is fixed to the inner wall of the gas supply pipe 10 in a spiral shape, for example, and protrudes from the inner wall of the gas supply pipe 10 into the inside of the gas supply pipe 10. . In the examples shown in FIGS. 3 to 5, six fan-shaped blades 21 are arranged in a spiral shape in the same winding direction on the wall of the gas supply pipe 10. When the gas inlet 10a side of the gas supply pipe 10 has a threaded structure as shown in FIG. 3, the direction of the spiral winding is preferably the opposite direction to the threaded structure, and in the illustrated example, the direction is 90°. A right-handed twist is shown. This can prevent the screw connection between the gas supply pipe 10 and the gas supply source 200 from loosening.

In the center of the gas supply pipe 10 provided with a plurality of fan-shaped blade bodies 21, there is a flow path 22 (FIG. 4 and 5) is formed. Note that if a flow path 22 in which the blade body 21 is not disposed is formed in the center of the gas supply pipe 10, the blade body 21 is configured to protrude into the gas supply pipe 10 from the inner wall of the gas supply pipe 10. It is not limited to one thing. Although not shown here, the stirring member 20 may have a structure in which, for example, the gas supply pipe 10 is provided with an inner cylinder to form a double pipe, and the blade body 21 is held against the inner cylinder. Furthermore, if the flow path 22 is secured inside the inner cylinder, the blade body 21 may be provided inside the inner cylinder as well.

Although the method for forming the stirring member 20 is not limited, if the purpose is to improve the dispersion efficiency by making the gas [G] finer by the stirring member 20, a method for forming the blade body 21 with a high packing density may be used. It is preferable that For example, the stirring member 20 is produced by manufacturing a fan-shaped blade body 21 cut using a laser processing machine, for example, and molding the fan-shaped blade body 21 into a spiral shape using a mold. This is obtained by placing the spiral blade 21 in a perforation formed using a laser processing machine, and joining the wall of the gas supply pipe 10 and the end edge of the blade 21 using a laser processing machine. In this state, the fan-shaped outer peripheral edge 21b (see FIGS. 3 and 4) of each blade body 21 may be exposed to the outer peripheral wall of the gas supply pipe 10. Further, the stirring member 20 may be formed integrally with the gas supply pipe 10 using, for example, a 3D printer.

The above-described stirring member 20 allows the gas [G] introduced from the gas inlet 10a side of the gas supply pipe 10 to flow in a spiral flow along the spiral of the blade body 21, and in a straight flow that travels straight through the flow path 22. It is separated into a divided flow flowing through each perforation 21a formed in the blade body 21 and merged with the divided flow. The gas [G] passing through the stirring member 20 undergoes continuous division, rotation, and shearing action by repeating separation and merging, generates turbulent flow, becomes dispersed, and reaches the gas outlet of the gas supply pipe 10. 10b, it is ejected into the flow path pipe 30. Note that the injection speed of the gas [G] ejected from the gas supply pipe 10 is preferably in the range of 5 to 500 m/sec.

<Flow path pipe 30>
Returning to FIGS. 1 and 2, the flow path pipe 30 is a tubular body and is disposed on the side of the gas outlet 10b of the gas supply pipe 10, and is used to collect gas [G ] and the liquid [L] in the storage tank in which this air diffuser 1 is arranged. The flow pipe 30 has one opening as an inlet 30a for liquid [L] and gas [G], and the other opening as an outlet 30b for liquid [L] and gas [G].

Further, the flow path pipe 30 may be a cylindrical pipe having an inner diameter larger than the outer diameter of the gas supply pipe 10 and having an inner diameter depending on the liquid processing capacity. It is assumed that such a flow pipe 30 is held with its central axis substantially coaxial with the gas supply pipe 10.

Further, the flow pipe 30 has a plurality of side wall openings 30c on the side wall on the inlet 30a side. These side wall openings 30c serve as intake ports for the liquid [L]. On the other hand, the flow pipe 30 has a wide inner diameter on the side of the discharge port 30b, and the fluid discharge port 30b side, which has the wide inner diameter, is configured as an installation part for the magnetizing member 40 (see FIG. 2).

Such a flow pipe 30 forms a flow of liquid [L] heading from the inlet 30a to the outlet 30b at high speed due to the air lift effect caused by the jet flow of compressed gas [G] from the gas supply pipe 10. . In addition, inside the flow pipe 30, the finely dispersed gas [G] is supplied at high speed as a turbulent flow to the liquid [L] flowing at high speed, so that fine air bubbles are generated in the liquid [L]. A gas-liquid multiphase flow [Lg] in which (microbubbles) are dispersed is formed.

<Magnetized member 40>
The magnetization member 40 is for forming a magnetic field within the flow pipe 30 and is a member for irradiating lines of magnetic force perpendicularly and radially to the flow of fluid flowing within the flow pipe 30. Such a magnetizing member 40 is installed on the discharge port 30b side in the flow pipe 30, and is arranged with a space 31 interposed between it and the stirring member 20.

FIG. 6 is a plan view of the magnetized member 40 provided in the air diffuser according to the first embodiment, and is a view of the magnetized member 40 viewed from the direction of the outlet 30b of the flow pipe 30 (see FIG. 2). It is. As shown in FIGS. 2 and 6, the magnetization member 40 includes a plurality of magnetic bodies 41 extending in a direction perpendicular to the axial direction z of the flow pipe 30. The plurality of (two in this case) magnetic bodies 41 are flat plate-shaped arranged in parallel, and the flat plate surfaces are arranged parallel to the axial direction z of the flow path tube 30, and the magnetic bodies 41 facing each other are arranged in parallel. It has a structure in which a spacer 42 is sandwiched between the two. Thereby, the flow of the gas-liquid multiphase flow [Lg] in the flow path pipe 30 is irradiated with magnetic lines of force in the vertical direction and radially, and the gas-liquid multiphase flow [Lg] is magnetized. The magnetic body 41 and the spacer 42 are fixed by, for example, a long screw 43 and a nut 44 that pass through the magnetic body 41 and the spacer 42, and a predetermined pitch is maintained between the two opposing magnetic bodies 41.

The magnetic material constituting the magnetic body 41 is made of a composite material containing at least one of neodymium, dysprosium, samarium, indium, manganese, chromium, iron, copper, cobalt, nickel, boron, and ferrite. It is assumed that there is. The magnetic material is not limited to these materials, as long as it forms a magnetic field.

Note that the constituent elements of the air diffuser 1 other than the magnetized member 40 may be constructed using materials appropriately selected from plastics such as vinyl chloride and polypropylene, and metals such as iron, stainless steel, and aluminum. Can be done.

- Diffusion method -
Next, the operation of the aeration device 1 explained using FIGS. 1 to 6 will be explained as an aeration method. Such an air diffuser 1 is used in a state submerged in a liquid [L] in a storage tank (not shown), and the liquid [L] in the storage tank is contained in the flow path pipe 30. Filled. In this state, compressed gas [G] is introduced from the gas supply source 200 into the gas supply pipe 10 . Then, the gas [G] introduced from the gas supply source 200 is finely dispersed by the stirring member 20 disposed in the gas supply pipe 10, and the finely dispersed gas [G] is introduced into the flow path pipe 30. Spray at high speed.

Thereby, due to the air lift effect of the gas [G] injected from the gas supply pipe 10, a circulation path for the liquid [L] from the gas supply pipe 10 side to the discharge port 30b side is formed in the flow path pipe 30. At the same time, in the space 31 of the flow pipe 30, the gas [G] finely dispersed by the stirring member 20 is generated as a turbulent flow at high speed against the liquid [L] that has flowed into the flow pipe 30. is supplied to form a gas-liquid multiphase flow [Lg] in which fine bubbles (microbubbles) are dispersed in the liquid [L].

Next, the magnetizing member 40 provided on the outlet 30b side of the flow pipe 30 irradiates magnetic lines of force perpendicularly and radially to the flow of the gas-liquid multiphase flow [Lg] to perform magnetization processing. The gas-liquid multiphase flow [Lg] is discharged from the discharge port 30b as a treated liquid [La].

-Effects of the first embodiment-
The aeration device 1 and the aeration method of the first embodiment described above are configured to magnetize the gas-liquid multiphase flow [Lg] containing microbubbles with a large specific surface area. It is possible to perform magnetization treatment with high irradiation efficiency of magnetic lines of force. As a result, if the liquid [L] is water, the hydrogen bonds between water molecules can be effectively broken by the magnetization treatment, and more free radicals (OH ^- ) can be generated and activated by the plasma phenomenon. It becomes possible. As a result, it is possible to obtain a treated liquid [La] that is highly effective in suppressing the activity of bacteria and microorganisms, as a liquid containing microbubbles.

Further, as described above, in the flow path pipe 30, the gas-liquid multiphase flow [Lg] is created by supplying the finely dispersed gas [G] as a turbulent flow at high speed to the liquid [L] flowing at high speed. form. Therefore, the gas-liquid multiphase flow [Lg] and the treated liquid [La] obtained by magnetizing the same can be expected to have a sterilizing effect and a water treatment effect due to the ultrasonic waves generated by the cavitation effect. Furthermore, by the gas-liquid contact action, it is also possible to diffuse the gaseous substance contained in the liquid [L] into the gas [G] and remove it from the liquid [L].

≪Second embodiment≫
-Air diffuser-
FIG. 7 is a diagram showing the overall configuration of an air diffuser 2 according to the second embodiment. The air diffuser 2 shown in this figure is installed at the bottom of a relatively large liquid storage tank, and is used to disperse and process gas [G] into the liquid [L] stored in the storage tank. .

The difference between the air diffuser 2 shown in this figure and the air diffuser 1 of the first embodiment is that a large-diameter flow pipe 60 having a larger diameter than the flow pipe 30 is additionally provided, and this large-diameter flow pipe 60 A stirring member functioning as a mixing member 70 is additionally disposed inside the container. Further, the magnetizing member 40' is not disposed within the flow pipe 30 but is provided within the large diameter flow pipe 60. Since the other configurations are similar to the air diffuser 1 of the first embodiment, the same components as those of the first embodiment are denoted by the same reference numerals, and redundant explanation will be omitted.

<Large diameter flow pipe 60>
The large-diameter flow pipe 60 is a tubular body and is arranged on the outlet 30b side of the flow pipe 30, and the gas-liquid multiphase flow [Lg] released from the flow pipe 30 and the air diffuser 2 are disposed therein. This becomes a flow path through which the liquid [L] in the storage tank is passed. The large-diameter flow pipe 60 has one opening as an inlet 60a and the other opening as an outlet 60b.

Further, the large diameter flow pipe 60 may be a cylindrical pipe having an inner diameter larger than the outer diameter of the flow pipe 30 and having an inner diameter depending on the liquid processing capacity. Such a large-diameter flow pipe 60 supports the flow pipe 30 from four directions by, for example, four plate-shaped supports 61, and has a central axis substantially coaxial with the flow pipe 30 and the gas supply pipe 10. It shall be maintained at . These supports 61 are arranged parallel to the axial direction of the large-diameter flow pipe 60 without interfering with the inflow of the liquid [L] into the large-diameter flow pipe 60 .

<Mixing member 70>
The mixing member 70 is a stirring member disposed inside the large diameter channel pipe 60, and is used as a member for mixing different fluids. This mixing member 70 finely disperses and mixes the gas-liquid multiphase flow [Lg] discharged from the flow pipe 30 and the liquid [L] taken in from the inlet 60a of the large diameter flow pipe 60. It is a member of Such a mixing member 70 may have any configuration as long as it uses the same blade body 21 as the stirring member 20 described using FIGS. 4 and 5 in the first embodiment, for example. Can be used.

That is, referring to FIGS. 4 and 5, the mixing member 70 has a configuration in which a plurality of blade bodies 71 protrude inside the large-diameter flow pipe 60, and each blade body 71 has a fan shape having a plurality of perforations 71a. It is made of a perforated plate. Each of these blade bodies 71 is fixed to the wall of the large-diameter flow pipe 60 in a spiral shape, and the large-diameter flow pipe 60 is provided at the center of the large-diameter flow pipe 60 in which the plurality of blade bodies 71 are provided. A flow path 72 (see FIG. 5) in which the blade body 71 is not arranged is formed in the center when viewed from the axial direction.

Returning to FIG. 7, such a mixing member 70 is disposed at the center of the large-diameter flow pipe 60 in the axial direction, maintains a space 62 between it and the outlet 30b of the flow pipe 30, and is also described below. A space 63 is maintained between the magnetization member 40' and the magnetization member 40'. However, it is preferable that the spiral winding direction of the blade body 71 that constitutes the mixing member 70 is opposite to the spiral winding direction of the blade body 21 that constitutes the stirring member 20.

Further, a plurality of mixing members 70 may be arranged in series within the large-diameter flow pipe 60 with a space therebetween. In this case, it is preferable that the spiral winding directions of the blade bodies 71 constituting each mixing member 70 are alternately opposite directions.

The above-described mixing member 70 allows the gas-liquid multiphase flow [Lg] introduced from the flow pipe 30 and the liquid [L] introduced from the inlet 60a of the large diameter flow pipe 60 into the spiral of the blade body 71. A spiral flow flowing along the flow path 72, a straight flow flowing straight through the flow path 72, and a divided flow flowing through each perforation 71a formed in the blade body 71 are separated and merged. The gas-liquid multiphase flow [Lg] passing through the mixing member 70 and the liquid [L] introduced from the inlet 60a of the large-diameter flow path pipe 60 are divided and rotated by repeating separation and merging in this way. , mixed under continuous shearing action. As a result, a gas-liquid multiphase flow [Lg'] containing super microbubbles is formed by further subdividing and dispersing the fine bubbles (microbubbles) in the gas-liquid multiphase flow [Lg], and the large-diameter flow path pipe It is ejected into the space 63 of 60.

<Magnetized member 40'>
The magnetizing member 40' is for forming a magnetic field by alternately arranging permanent magnets with different north and south poles in the large diameter flow pipe 60, and is used to control the flow of fluid flowing inside the large diameter flow pipe 60. This is a member for irradiating lines of magnetic force perpendicularly and radially to the magnetic field. Such a magnetized member 40' is installed on the discharge port 60b side in the large-diameter flow pipe 60, and is arranged with a space 63 between it and the mixing member 70.

FIG. 8 is a plan view of the magnetized member 40' provided in the air diffuser according to the second embodiment, and is a view of the magnetized member 40' viewed from the axial direction z of the large-diameter flow pipe 60. As shown in FIGS. 7 and 8, the magnetizing member 40' has plate-shaped magnetic bodies 41 arranged parallel to the axial direction of the large-diameter flow pipe 60 and arranged to face each other, and a spacer is provided between the opposing magnetic bodies 41. 42 is sandwiched between them. As a result, lines of magnetic force are irradiated perpendicularly and radially to the flow of the gas-liquid multiphase flow [Lg'] flowing between the magnetic bodies 41 arranged oppositely in the large-diameter flow path pipe 60, and the gas-liquid multiphase flow [Lg'] is configured to undergo magnetization processing. The magnetic body 41 and the spacer 42 are fixed, for example, with a long screw 43 and a nut 44 that pass through the magnetic body 41 and the spacer 42, thereby maintaining a predetermined pitch [P] between the plurality of opposing magnetic bodies 41. It's dripping.

In the illustrated example, a magnetized member 40' is shown in which a structure 40a having four to five (four in the drawing) fixed magnetic bodies 41 is stacked in five layers (see FIG. 7). Note that the magnetic material 41 is made of the material described in the first embodiment.

- Diffusion method -
Next, the operation of the air diffuser 2 described using FIGS. 7 and 8, as well as FIGS. 4 and 5, will be described as an air diffusion method. Such a diffuser 2 is used in a state submerged in a storage tank (not shown), and the liquid [L] in the storage tank is contained in the flow pipe 30 and the large diameter flow pipe 60. Filled. In this state, compressed gas [G] is introduced from the gas supply source 200 into the gas supply pipe 10 . As a result, as described in the first embodiment, a gas-liquid multiphase flow [Lg] in which fine bubbles (microbubbles) are dispersed in the liquid [L] is formed.

Next, the formed gas-liquid multiphase flow [Lg] is ejected into the large-diameter flow path pipe 60, and due to the air lift effect caused by the ejection of the gas-liquid multiphase flow [Lg], it flows into the large-diameter flow path pipe 60 toward the discharge port 60b side. Form a circulation path for liquid [L]. Then, the gas-liquid multiphase flow [Lg] and the liquid [L] taken into the large-diameter flow pipe 60 are mixed in the mixing member 70, and fine bubbles (microbubbles) are formed in the gas-liquid multiphase flow [Lg]. is further dispersed to form a gas-liquid multiphase flow [Lg'] containing super microbubbles.

Next, the magnetizing member 40' provided on the outlet 60b side of the large-diameter flow path pipe 60 irradiates magnetic force lines perpendicularly and radially to the gas-liquid multiphase flow [Lg'] containing super microbubbles to magnetize it. The treated and magnetized gas-liquid multiphase flow [Lg'] is discharged from the outlet 60b of the large-diameter flow pipe 60 as a treated liquid [La'].

-Effects of the second embodiment-
According to the second embodiment described above, the gas-liquid multiphase flow [Lg'] containing super microbubbles obtained by further dividing and dispersing the bubbles (microbubbles) of the first embodiment is configured to magnetize. be. Therefore, it is possible to generate more free radicals (OH ⁻ ) than in the first embodiment. Furthermore, super microbubbles themselves have the ability to generate free radicals (OH ⁻ ). Therefore, compared to the first embodiment, it is possible to obtain a treated liquid [La'] that has a higher treatment effect of suppressing the activities of bacteria and microorganisms as a liquid containing microbubbles, and also has an even higher concentration of gaseous substances. It is possible to obtain a removal effect.

≪Third embodiment≫
-Air diffuser-
FIG. 9 is a diagram showing the overall configuration of an air diffuser 3 according to the third embodiment. The third embodiment is a modification of the second embodiment. The difference between the air diffuser 3 of the third embodiment shown in this figure and the air diffuser 2 of the second embodiment is that the flow pipe 30 is not provided and the gas supply pipe 10 is directly connected to the large diameter flow pipe 60. It is supported by Further, the stirring member 20 is not provided inside the gas supply pipe 10.

That is, the air diffuser 3 of the third embodiment includes a gas supply pipe 10, a large diameter channel pipe 60, a mixing member 70 as a stirring member provided in the large diameter channel pipe 60, and a magnetizing member 40'. There is. These members have the same configuration as each member described in the first embodiment and the second embodiment. However, the large-diameter flow pipe 60 supports the gas supply pipe 10 from four directions by, for example, four plate-shaped supports 61', and its central axis is held substantially coaxial with the gas supply pipe 10. That's it.

-Effects of the third embodiment-
Even in the diffuser 3 having such a configuration, the gas-liquid multiphase flow [Lg] formed by mixing the gas [G] and the liquid [L] by the mixing member 70 is magnetized. It becomes possible to obtain a treated liquid [La] having a high treatment effect of suppressing the activity of bacteria and microorganisms as a liquid containing microbubbles. Furthermore, by the gas-liquid contact action, it is also possible to diffuse the gaseous substance contained in the liquid [L] into the gas [G] and remove it from the liquid [L].

≪Fourth embodiment≫
-Water treatment equipment-
FIG. 10 is a diagram showing the overall configuration of a water treatment device 4 according to the fourth embodiment. The water treatment device 4 shown in this figure has a configuration using at least one of the air diffusers 1 to 3 according to the first to third embodiments described above. In the following, a configuration using the diffuser 1 of the first embodiment will be described as an example.

This water treatment device 4 is an aeration treatment tank including a liquid [L] storage tank 400 and an aeration device 1.

Among these, the storage tank 400 is for storing the liquid [L] to be treated by the water treatment device 4. The storage tank 400 is supplied with unprocessed liquid [L] from a raw water supply line 401 . Further, this storage tank 400 is provided with a discharge line 402 for discharging the treated liquid [La] after treatment. The discharge line 402 is connected to a position in the storage tank 400 that includes the waterline, and discharges the treated liquid [La] from near the waterline.

The air diffuser 1 is disposed at the bottom of the storage tank 400 and is used while being submerged in the liquid [L] stored in the storage tank 400. The air diffuser 1 is disposed at the bottom of the storage tank 400 with the gas supply pipe 10 at the bottom and the flow path pipe 30 at the top, with their axial directions substantially perpendicular. Accordingly, referring to FIG. 2, the air diffuser 1 is arranged at the bottom of the storage tank 400 such that the magnetization member 40 is arranged above the stirring member 20. Further, the air diffuser 1 arranged in this manner has a configuration in which a gas supply source 200 is connected to the gas supply pipe 10. In addition, although only one air diffuser 1 is shown in the figure, a plurality of air diffusers 1 may be used by being submerged in the liquid [L], and according to the first to third embodiments. Diffusion devices 1 to 3 may be used in combination. In this case, the plurality of air diffusers may be connected to the gas supply source 200 in parallel, for example.

-Effects of the fourth embodiment-
According to the water treatment device 4 (FIG. 10) having such a configuration, by supplying compressed gas [G] from the gas supply source 200 to the gas supply pipe 10 of the aeration device 1, the gas [G] is stored in the storage tank 400. The resulting liquid [L] can be taken into the aeration device 1 and subjected to aeration treatment. Therefore, the liquid [L] taken in from the storage tank 400 is circulated back into the storage tank 400 as a treated liquid [La] with a high treatment effect of suppressing the activities of bacteria and microorganisms, and the liquid in the storage tank 400 is circulated. [L] can be efficiently sterilized. In addition, if fine particles are dispersed in the liquid [L] in the storage tank 400, the fine particles in the liquid [L] are floated to the liquid surface together with microbubbles and sent from the discharge line 402 together with the treated liquid [La]. Can be discharged. Thereby, it is also possible to remove particulates from the liquid [L] in the storage tank 400. It is also possible to remove the gaseous substance contained in the liquid [L] from the liquid [L] by dissipating it into the gas [G].

Note that the water treatment device 4 is not limited to such a configuration, and the aeration device 1 may be erected at the bottom of the storage tank 400 so that the magnetization member 40 is disposed below the stirring member 20. may be done. In this case, it is possible to prevent solid objects such as dust and fibers that have settled in the liquid [L] in the storage tank 400 from getting caught or staying in the air diffuser 1.

≪Fifth embodiment≫
-Air diffuser-
FIG. 11 is a diagram showing the overall configuration of an air diffuser 5 according to the fifth embodiment. Moreover, FIG. 12 is a cross-sectional perspective view of the air diffuser 5 according to the fifth embodiment. The air diffuser 5 shown in these figures is used by being installed at the bottom of a liquid storage tank, and is used to disperse and process gas [G] into liquid [L] stored in the storage tank. . Such an aeration device 5 includes a gas supply pipe 80, a stirring member 20 provided within the gas supply pipe 80, a flow pipe 90 communicating with the gas supply pipe 80, and a mixing member provided within the flow pipe 90. 70 and a magnetizing member 40''.The stirring member 20 is the same as that in the first embodiment, and the mixing member 70 is the same as that in the second embodiment. Components other than member 20 and mixing member 70 will be explained in order.

<Gas supply pipe 80>
The gas supply pipe 80 is a tubular body configured as an injection nozzle that ejects compressed gas [G], and includes a main pipe 81 , a branch pipe 82 , and an ejection pipe 83 .

[Main piping 81]
The main pipe 81 is inserted into a flow pipe 90 described below and held substantially coaxially with the flow pipe 90. The main pipe 81 has one opening protruding from the flow pipe 90 as a gas introduction port 80 a connected to the gas supply source 200 . The gas inlet 80a has a flange structure for connecting a supply line from the gas supply source 200 with a flange. The other opening of the main pipe 81 is configured to branch into a plurality of branch pipes 82.

[Branch pipe 82]
The branch pipe 82 is obtained by branching the other opening of the main pipe 81 into a plurality of branches, and for example, four branch pipes 82 are provided in four directions perpendicular to the main pipe 81. Each branch pipe 82 reaches the inner wall of a flow pipe 90, which will be described later, from the branch part from the main pipe 81, and is closed at the inner wall of the flow pipe 90 or at a position close to the inner wall. .

[Ejection pipe 83]
The ejection pipe 83 is connected to each branch pipe 82 at the peripheral wall of each branch pipe 82, and is arranged substantially parallel to the main pipe 81 toward the gas inlet 80a side of the main pipe 81. This ejection pipe 83 has an opening at a distal end extending from the branch pipe 82 as a gas ejection port 80b that ejects gas into a flow path pipe 90 which will be described later. In other words, this gas supply pipe 80 is equipped with a plurality (four in this case) of gas jet ports 80b.

The stirring member 20 is housed inside each of such ejection pipes 83. The stirring member 20 is the same as that described in the first embodiment, and finely disperses the compressed gas [G] introduced into the gas supply pipe 80 from the gas supply source 200 to form a flow path pipe. This is a member for ejecting water into the interior of 90.

<Flow path pipe 90>
The flow path pipe 90 is a tubular body and is provided to accommodate the gas outlet 80b side of the gas supply pipe 80, and is configured to collect the gas [G] ejected from the gas outlet 80b of the gas supply pipe 80, and the gas [G] ejected from the gas outlet 80b of the gas supply pipe 80. This is a member that serves as a flow path through which the liquid [L] in the storage tank in which the air diffuser 5 is placed passes. In such a flow pipe 90, the opening on the gas jet port 80b side of the gas supply pipe 80 serves as an inlet 90a for liquid [L], and the other opening serves as an outlet 90b for liquid [L] and gas [G]. There is.

Further, the flow pipe 90 may be a cylindrical pipe having an inner diameter larger than the outer diameter of the gas supply pipe 80 and having an inner diameter depending on the liquid processing capacity. The flow path pipe 90 as described above is held with its central axis substantially coaxial with the main pipe 81 of the gas supply pipe 80. Branch pipes 82 of the gas supply pipe 80 are laid in four directions in the radial direction within the flow pipe 90, but the flow pipe 90 is open in the gaps between the branch pipes 82, and the flow is prevented. The pipe 90 is configured to be open in two directions, an inlet 90a and an outlet 90b.

Further, this flow pipe 90 has a plurality of side wall openings 90c on the side wall on the inlet 90a side. These side wall openings 90c serve as intake ports for the liquid [L].

A mixing member 70 serving as a stirring member is housed inside the flow path pipe 90 at a position facing the gas outlet 80b of the gas supply pipe 80. The mixing member 70 is similar to that described in the second embodiment, and finely disperses the gas [G] supplied from the gas supply pipe 80 and the liquid [L] in the flow path pipe 90. This is a member for converting and mixing. In this mixing member 70, a flow path 72 (see FIG. 5) in which the blade body 71 is not arranged is formed in the center of the flow path pipe 90 when viewed from the axial direction, and the above-mentioned gas supply pipe is connected to this flow path 72. 80 main pipes 81 have been installed.

<Magnetized member 40">
The magnetizing member 40'' is for forming a magnetic field within the flow pipe 90, and is a member for irradiating lines of magnetic force perpendicularly and radially to the flow of fluid flowing within the flow pipe 90. .Such a magnetized member 40'' is arranged on the outlet 90b side in the flow pipe 90, surrounding the main pipe 81 of the gas supply pipe 80, with a space 92 interposed between it and the mixing member 70. .

This magnetized member 40'' has a structure in which plate-shaped magnetic bodies 41 arranged parallel to the axial direction of the flow pipe 90 are arranged to face each other, and a spacer is sandwiched between the opposing magnetic bodies 41. As a result, lines of magnetic force are irradiated perpendicularly and radially by the two magnetic bodies 41 to the flow of the gas-liquid multiphase flow [Lg'] containing super microbubbles formed by the mixing member 70, and the gas-liquid multiphase flow is [Lg'] is configured to undergo magnetization processing.

- Diffusion method -
Next, the operation of the aeration device 5 explained using FIGS. 11 and 12 will be explained as an aeration method. Such a diffuser 5 is used in a state submerged in liquid [L] in a storage tank (not shown), and the liquid [L] in the storage tank is filled into the flow path pipe 90. be done. In this state, compressed gas [G] is introduced from the gas supply source 200 into the gas supply pipe 80 . Then, the gas [G] introduced from the gas supply source 200 is finely dispersed by the stirring member 20 disposed in the ejection pipe 83 of the gas supply pipe 80, and the finely dispersed gas [G] is passed through the flow path. Inject into tube 90 at high speed.

Thereby, due to the air lift effect of the gas [G] injected from the gas supply pipe 80, a circulation path for the liquid [L] from the inflow port 90a to the discharge port 90b side is formed in the flow path pipe 90. At the same time, in the space 91 of the flow pipe 90, the gas [G] finely dispersed by the stirring member 20 is generated as a turbulent flow at high speed against the liquid [L] that has flowed into the flow pipe 90. A gas-liquid multiphase flow [Lg] in which fine bubbles (microbubbles) are dispersed in the liquid [L] is formed.

The formed gas-liquid multiphase flow [Lg] is further mixed in the mixing member 70, and fine bubbles (microbubbles) in the gas-liquid multiphase flow [Lg] are further dispersed to form a gas-liquid multiphase flow containing super microbubbles. [Lg'] is formed.

Next, the magnetizing member 40'' provided on the outlet 90b side of the flow pipe 90 irradiates magnetic lines of force perpendicularly and radially to the gas-liquid multiphase flow [Lg'] to perform magnetization processing. The gas-liquid multiphase flow [Lg'] is discharged from the outlet 90b of the flow path pipe 90 as the treated liquid [La'].

-Effects of the fifth embodiment-
According to the fifth embodiment described above, the gas-liquid multiphase flow [Lg'] containing super microbubbles obtained by further dividing and dispersing air bubbles (microbubbles) is magnetized. Therefore, it is possible to generate more free radicals (OH ⁻ ) than in the first embodiment. Furthermore, super microbubbles themselves have the ability to generate free radicals (OH ⁻ ). Therefore, it is possible to obtain a treated liquid [La'] that is more effective in suppressing the activities of bacteria and microorganisms than in the first embodiment, as a liquid containing microbubbles.

≪Sixth embodiment≫
-Water treatment equipment-
FIG. 13 is a diagram showing the overall configuration of a water treatment device 6 according to the sixth embodiment. The water treatment device 6 shown in this figure has a configuration using the aeration device 5 according to the fifth embodiment described above, and the other configurations are the same as the water treatment device according to the fourth embodiment. Therefore, the explanation that overlaps with the water treatment device of the fourth embodiment will be omitted.

That is, the water treatment device 6 is an aeration treatment tank including a liquid [L] storage tank 400 and an aeration device 5. The air diffuser 5 is disposed at the bottom of the storage tank 400 and is used while submerged in the liquid [L] stored in the storage tank 400. The air diffuser 5 is arranged at the bottom of the storage tank 400 with the gas inlet 80a of the gas supply pipe 80 at the top, the inlet 90a of the flow path pipe 90 at the bottom, and with their axes substantially perpendicular. Accordingly, referring to FIGS. 11 and 12, the aeration device 5 is arranged at the bottom of the storage tank 400 such that the magnetizing member 40'' is arranged above the mixing member 70 as a stirring member. The air diffuser 5 arranged in this way has a configuration in which the gas supply source 200 is connected to the gas supply pipe 80.Although only one air diffuser 5 is shown in the figure, multiple air diffusers 5 are shown. The air diffuser 5 may be used by being submerged in the liquid [L], or may be used in combination with the air diffusers 1 to 3 according to the first to third embodiments.In this case, a plurality of The air diffuser may be connected in parallel to the gas supply source 200, for example.

-Effects of the sixth embodiment-
According to the water treatment device 6 having such a configuration, by supplying the compressed gas [G] from the gas supply source 200 to the gas supply pipe 80 of the aeration device 5, the liquid [G] stored in the storage tank 400 is removed. L] can be taken into the aeration device 5 and subjected to aeration treatment. Therefore, the liquid [L] taken in from the storage tank 400 is circulated back into the storage tank 400 as a gas-liquid multiphase flow [Lg'] that is highly effective in suppressing the activities of bacteria and microorganisms, and the liquid [L] in the storage tank 400 is circulated again. It becomes possible to efficiently sterilize the liquid [L]. In addition, if fine particles are dispersed in the liquid [L] in the storage tank 400, the fine particles in the liquid [L] are floated to the liquid surface together with microbubbles, and the treated liquid [La'] is discharged from the discharge line 402. It can be discharged together with Thereby, it is also possible to remove particulates from the liquid [L] in the storage tank 400. It is also possible to remove the gaseous substance contained in the liquid [L] from the liquid [L] by dissipating it into the gas [G].

The air diffusers 1 to 3, 5 and the water treatment devices 4, 6 of the first to sixth embodiments described above are used for wastewater treatment using the activated sludge (suspended organisms) method or biofilm method in aerobic decomposition of the biological treatment method. Can be used as a device. Examples of the wastewater to be treated include livestock wastewater treatment, industrial wastewater, industrial wastewater, domestic wastewater, and even the final wastewater of sewerage systems. Furthermore, the aeration devices 1 to 3, and 5 of each embodiment are not limited to use as wastewater treatment devices, and can be used as water quality improvement devices for aquaculture ponds in the fisheries industry, water purification devices for lakes, bilbits, etc. It can be used as a water quality maintenance device and ballast water treatment device. Further, the air diffusers 1 to 3, 5 and the water treatment devices 4, 6 of each embodiment can be used as building equipment.

≪Seventh embodiment≫
-Water treatment equipment-
FIG. 14 is a diagram showing the overall configuration of a water treatment device 7 according to the seventh embodiment. The water treatment device 7 shown in this figure includes at least one of the air diffusers 1 to 3 according to the first to third embodiments described above or the air diffuser 5 according to the fifth embodiment. This configuration is used, for example, to treat contaminated water containing radioactive materials. In the following, a configuration using the diffuser 1 of the first embodiment will be described as an example.

This water treatment device 7 is a multi-tower contaminated water treatment device that includes a plurality of stripping towers 700 and a diffuser 1, and the diffuser 1 is accommodated in each stripping tower 700. . Although a configuration using three diffusion towers 700 will be described here, the number of diffusion towers 700 may be one, two, or even four or more.

Each stripping tower 700 is a vertical container with closed upper and lower openings in a cylindrical shape, and the lower part is used as a storage tank in which liquid [L] is stored. The diffuser 1 is disposed at the bottom of each stripping tower 700 and is used in a state submerged in the liquid [L] stored in the stripping tower 700. The arrangement of the diffuser 1 in the liquid [L] is the same as in the fourth embodiment (FIG. 10), and the lower part of the diffusion tower 700 has the diffuser 1 arranged in the liquid [L]. Functions as an aeration treatment tank.

Here, the three diffusion towers 700 housing the diffuser 1 are referred to as a first diffusion tower 700a, a second diffusion tower 700b, and a third diffusion tower 700c. These stripping towers 700 constitute a liquid [L] flow path and a gas [G] flow path that are connected in series, as described below.

First, the flow path of the liquid [L] will be explained. A raw water supply line 701a is connected near the bottom of the first stripping tower 700a, and untreated liquid [L] is supplied as raw water. In this case, the raw water is, for example, contaminated water containing radioactive substances. A position including the waterline of the liquid [L] stored in the first stripping tower 700a and the vicinity of the bottom of the second stripping tower 700b are communicated with each other by a liquid flow pipe 701b. Liquid [L] is supplied from the first stripping tower 700a to the second stripping tower 700b.

The position including the waterline of the liquid [L] in the second stripping tower 700b and the vicinity of the bottom of the third stripping tower 700c are connected by another liquid flow path pipe 701b, and the Liquid [L] is supplied from the second stripping tower 700b to the third stripping tower 700c. The position including the water line of the liquid [L] in the second stripping tower 700b is lower than the same position in the first stripping tower 700a.

Furthermore, a liquid discharge line 701c is connected to a position including the water line of the liquid [L] in the third stripping tower 700c. The liquid discharge line 701c is connected to, for example, an external storage tank, and discharges the treated liquid [La] to the external storage tank. The position including the water line of the liquid [L] in the third stripping tower 700c is lower than the same position in the second stripping tower 700b.

Next, the flow path of gas [G] will be explained. A gas supply line 702a is inserted near the bottom of the third stripping tower 700c. The gas supply line 702a is connected to the gas supply pipe 10 (see FIGS. 1 and 2) of the diffuser 1 housed in the third diffusion tower 700c and the gas supply source 200. The gas [G] supplied from the gas supply source 200 is, for example, compressed air pressurized to about 300 mmAq to 1000 mmAq and 3 kPaG to 10 kPaG, but it may be other gases. Further, the gas [G] supplied from the gas supply source 200 may be compressed to about 0.1 MPaG to 1 MPaG. Thereby, gas [G] is supplied from the gas supply source 200 to the diffuser 1 housed in the third diffusion tower 700c. The diffuser 1 in the third stripping tower 700c supplies gas [G] from the gas supply source 200 to the liquid [L] stored in the third stripping tower 700c in the form of fine bubbles (microbubbles). Disperse, aerate, dissipate, and proceed with chemical reactions.

The top of the third stripping tower 700c and the gas supply pipe 10 (see FIGS. 1 and 2) of the diffuser 1 housed in the second stripping tower 700b are connected by a gas flow pipe 702b. There is. Thereby, the gas [G] that has risen in the third diffusion tower 700c is supplied to the diffuser 1 accommodated in the second diffusion tower 700b. The diffuser 1 in the second stripping tower 700b finely distributes the gas [G] supplied from the third stripping tower 700c to the liquid [L] stored in the second stripping tower 700b. Disperse as air bubbles (microbubbles) and proceed with aeration, dissipation, and chemical reaction.

The top of the second stripping tower 700b and the gas supply pipe 10 (see FIGS. 1 and 2) of the diffuser 1 housed in the first stripping tower 700a are connected by a gas flow pipe 702b. There is. Thereby, the gas [G] that has risen in the second diffusion tower 700b is supplied to the diffuser 1 accommodated in the first diffusion tower 700a. The diffuser 1 in the first stripping tower 700a finely distributes the gas [G] supplied from the second stripping tower 700b to the liquid [L] stored in the first stripping tower 700a. Disperse into air bubbles (microbubbles) and proceed with aeration, dissipation, and chemical reaction.

Furthermore, a gas exhaust line 702c is connected to the top of the first stripping tower 700a. The gas exhaust line 702c is connected to, for example, external gas processing equipment. The gas processing equipment is, for example, equipment for processing gaseous radioactive substances such as radon, krypton, and tritium.

-Effects of the seventh embodiment-
According to the water treatment device 7 (FIG. 14) having such a configuration, by supplying the compressed gas [G] to the diffuser 1, the liquid [L] stored in the stripping tower 700 is transferred to the diffuser 1. It can be taken in and aerated. Therefore, like the water treatment apparatus of other embodiments, it is possible to efficiently aerate the liquid [L] in each stripping tower 700, and to remove fine particles from the liquid [L] in the stripping tower 700. It is possible to remove it. If the liquid [L] supplied from the raw water supply line 701a is contaminated water containing radioactive materials, fissile materials such as uranium and plutonium, strontium and cesium, etc., are suspended in the contaminated water. Ultrafine particles of radioactive material can be floated to the surface of the liquid together with microbubbles. Thereby, the treated liquid [La] in which these radioactive substances are concentrated can be discharged and recovered from the liquid discharge line 701c.

Furthermore, gaseous radioactive substances are diffused from the aerated liquid [L] in the stripping tower 700, and concentrated gas containing gaseous radioactive substances can be recovered from the gas discharge line 702c. .

In particular, this water treatment device 7 configures a liquid [L] flow path in which a plurality of stripping towers 700 are connected in series by a liquid flow path pipe 701b. Further, the water treatment device 7 configures a gas [G] flow path in which a plurality of diffusion towers 700 are connected in series by a gas flow pipe 702b. Thereby, the liquid [L] is continuously aerated in the order of the first stripping tower 700a, the second stripping tower 700b, and the third stripping tower 700c. Therefore, the radioactive substances in the form of ultrafine particles that have surfaced on the surface of the liquid [L] due to the aeration process are released from the waterline to the next one from the waterline in the order of the first stripping tower 700a, the second stripping tower 700b, and the third stripping tower 700c. 700 and is highly concentrated from low concentration to high concentration. As a result, it becomes possible to discharge the treated liquid [La] in which ultrafine particulate radioactive substances are highly concentrated to the outside of the system from the third stripping tower 700c and to separate and store it.

Further, the gas [G] aerates the liquid [L] continuously in the order of the third stripping tower 700c, the second stripping tower 700b, and the first stripping tower 700a. Therefore, the liquid [L] or the gaseous radioactive substance that has been aerated and diffused by the aeration process is transferred to the top of each stripping tower 700 in the order of the third stripping tower 700c, the second stripping tower 700b, and the first stripping tower 700a. From there, it is sent to the next stripping tower 700 where it is highly concentrated from low concentration to high concentration. As a result, the gas [G] containing a high concentration of gaseous radioactive substances can be released from the system, and can be recovered and processed in an external gas processing facility.

≪Eighth embodiment≫
-Air diffuser-
FIG. 15 is a diagram showing the overall configuration of a diffuser 8 according to the eighth embodiment. The diffuser 8 shown in this figure is installed inside a multi-column or single-column type stripping tower, and is used to disperse and process gas [G] into the liquid [L] supplied into the stripping tower. belongs to.

The air diffuser 8 shown in this figure has a configuration in which a mixing member 70 (hereinafter, see FIGS. 4 and 5) and a magnetizing member 40' (hereinafter, see FIG. 8) are installed inside a flow pipe 800 in this order. belongs to. The mixing member 70 and the magnetizing member 40' are arranged in order along the axial direction z of the flow pipe 800 with the space 801 interposed therebetween.

The flow pipe 800 is a tubular body that also serves as a gas supply pipe, and has a configuration in which, for example, a plurality of vanes 21 constituting the mixing member 70 are arranged from the inner wall of the flow pipe 800 into the flow pipe 800. be. The spiral winding direction of the blade body 21 of the mixing member 70 may be either left or right.

In this air diffuser 8, among the openings on both sides of the flow pipe 800, the opening 800a on the side of the mixing member 70 serves as an inlet for gas [G] and an outlet for liquid [L]. Further, the opening 800b on the magnetization member 40' side serves as an outlet for the gas [G] and an inlet for the liquid [L].

Such a diffuser 8 is arranged with the mixing member 70 side facing downward and the magnetizing member 40' side facing upward. In the flow pipe 800, gas [G] is supplied from an opening 800a on the mixing member 70 side located below, and liquid [L] is supplied by dispersion from an opening 800b on the magnetization member 40' side located below. Ru.

Note that a plurality of mixing members 70 may be arranged in series inside the flow pipe 800 with a space therebetween. Further, inside the flow pipe 800, a plurality of mixing members 70 and magnetizing members 40' may be arranged alternately. In these cases, it is preferable that the spiral winding directions of the blade bodies 21 constituting each mixing member 70 are alternately opposite directions.

-Effects of the eighth embodiment-
According to the air diffuser 8 (FIG. 15) having such a configuration, gas [G] containing air bubbles finely dispersed by the mixing member 70 is added to the liquid [L] magnetized by the magnetizing member 40'. Supplied. As a result, the droplet-shaped liquid [L] whose hydrogen bonds between water molecules have been effectively broken by the magnetization process is mixed with the finely dispersed gas [G] by the mixing member 70, and the liquid [L] is mixed with the gas [G] finely dispersed by the mixing member 70. ] From inside, gaseous substances (for example, radioactive substances) can be effectively diffused by aeration.

≪Ninth embodiment≫
-Water treatment equipment-
FIG. 16 is a diagram showing the overall configuration of a water treatment device 9 according to the ninth embodiment. The water treatment device 9 shown in this figure includes the air diffuser 8 according to the eighth embodiment described above, the air diffusers 1 to 3 according to the first to third or fifth embodiments described above, This configuration uses at least one of the following. This water treatment device 9 is used, for example, to treat contaminated water containing radioactive substances. In the following, a water treatment device 9 will be described as a configuration using the aeration device 1 of the first embodiment as an example, together with the aeration device 8 of the eighth embodiment.

This water treatment device 9 includes a diffusion tower 900, an aeration device 1 (hereinafter referred to as a first aeration device 1), and an aeration device 8 (hereinafter referred to as a second aeration device 8). This is a single-column contaminated water treatment device, in which a first aeration device 1 and a second aeration device 8 are housed in a diffusion tower 900.

The stripping tower 900 is a tubular body, and is a vertical container whose upper and lower openings are closed, and the lower part is used as a storage tank in which the liquid [L] is stored. The first diffuser 1 is disposed at the bottom of the stripping tower 900 and is used while being submerged in the liquid [L] stored in the stripping tower 900. The arrangement state of the first diffuser 1 in the liquid [L] is the same as in the fourth embodiment (FIG. 10), and the lower part of the diffusion tower 900 is arranged in the liquid [L]. It functions as an aeration treatment tank in which an aeration device 1 is placed. Although only one air diffuser 1 is shown in the figure, a plurality of air diffusers 1 may be submerged in the liquid [L], and the air diffusers according to each of the embodiments described above may be used. May be used in combination. In this case, the plurality of air diffusers may be connected to the gas supply source 200 in parallel, for example.

Further, the second aeration device 8 uses the central cylindrical portion of the stripping tower 900 as a flow path pipe 800, and is installed above the liquid [L] stored at the bottom of the stripping tower 900. The second air diffuser 8 is installed in the diffusion tower 900 with the mixing member 70 side facing downward and the magnetizing member 40' side facing upward.

Further, in the diffusion tower 900, a raw water supply line 901 is connected above the second diffuser 8. A water sprinkling member 902 is connected to the tip of the raw water supply line 901 . The water sprinkling member 902 is shaped like a shower head, and sprays the liquid [L] supplied from the raw water supply line 901 in the form of droplets over the inner diameter of the stripping tower 900 . The droplet-shaped liquid [L] sprayed from the water spraying member 902 is supplied to the second aeration device 8, and by passing through the second aeration device 8, it is mixed and magnetized, and further The fine particles are brought into contact with gas and liquid and stored at the bottom of the stripping tower 900.

Further, a liquid discharge line 903 is connected to the bottom of the stripping tower 900, and discharges the liquid [L] stored in the stripping tower 900 as a treated liquid [La]. The liquid discharge line 903 is connected to, for example, an external storage tank.

Furthermore, a gas supply line 904 is inserted near the bottom of the stripping tower 900. The gas supply line 904 is connected to the gas supply pipe 10 (see FIGS. 1 and 2) of the diffuser 1 housed in the diffusion tower 900 and the gas supply source 200. Thereby, the diffusion tower 900 is configured to be supplied with high-pressure gas (for example, air) from the first diffuser 1 disposed at the bottom.

Further, a gas exhaust line 905 is connected to the top of the diffusion tower 900. Thereby, the high-pressure gas (for example, air) supplied from the gas supply source 200 to the diffusion tower 900 via the first diffuser 1 is discharged to the outside from the gas discharge line 905. This gas exhaust line 905 is connected to, for example, external gas processing equipment. The gas processing equipment is a processing equipment that increases the concentration and immobilizes gaseous radioactive substances such as radon, krypton, and tritium.

-Effects of the ninth embodiment-
According to the water treatment device 9 (FIG. 16) having such a configuration, the raw water of the liquid [L] sprayed in the form of droplets from the water spraying member 902 is mixed and mixed by passing through the second aeration device 8. It is divided into magnetized fine particles that come into contact with gas and liquid. As a result, gaseous substances are aerated from the liquid [L], and the liquid [L] is brought into a purified state. Further, the liquid [L] that has been aerated in this way and is stored at the bottom of the stripping tower 900 can be aerated by the first aeration device 1 immersed in the liquid [L]. Therefore, the two-stage process allows efficient and effective aeration of the liquid [L] and aeration of the gaseous radioactive substance from the liquid [L]. Then, gas [G] containing concentrated gaseous radioactive material can be separated and recovered from the gas exhaust line 905.

≪Tenth embodiment≫
-Water treatment equipment-
FIG. 17 is a diagram showing the overall configuration of a water treatment device 100 according to the tenth embodiment. The water treatment device 100 shown in this figure is a modification of the water treatment device 9 according to the ninth embodiment described above. The difference between the water treatment device 100 shown in this figure and the water treatment device 9 according to the ninth embodiment described above is that the second air diffuser 8 is provided in multiple stages (three stages as an example in the drawing). It is a multi-stage tower type, with a chimney tray 1001 and a connection line 1002 provided between each stage. Other configurations are the same as the water treatment device 9 according to the ninth embodiment. Although a plurality of first air diffusers 1 are shown disposed at the bottom of the diffusion tower 900, the number of the first air diffusers 1 may be one as in the ninth embodiment. The air diffusers according to each embodiment may be used in combination. The configuration of the chimney tray 1001 and the connection line 1002 will be described below.

The chimney tray 1001 includes a tray 1001a that stores liquid [L] supplied from above, a penetration part 1001b that allows gas [G] to pass in the vertical direction, and a cap 1001c that follows the penetration part 1001b.

The connection line 1002 is drawn out from the vicinity of the water line of the tray 1001a in the chimney tray 1001 disposed at the top to the outside of the dispersion tower 900, and is connected to the dispersion tower 900 at the top of the second aeration device 8 disposed at the bottom. Ru. A water spray member 902 is connected to the tip of the connection line 1002. The water sprinkling member 902 is shaped like a shower head, and supplies the liquid [L] supplied from the connection line 1002 in the form of droplets over the inner diameter of the diffusion tower 900 .

Thereby, the liquid [L] stored in the tray 1001a of the upper chimney tray 1001 is supplied to the lower part via the connection line 1002, and is supplied to the second air diffuser 8 arranged at the lower part by the water spray member 902. The configuration is as follows.

-Effects of the 10th embodiment-
According to the water treatment device 100 (FIG. 17) having such a configuration, the second air diffuser 8 is arranged in multiple stages via the chimney tray 1001, so that raw water as liquid [L] is continuously distributed in multiple stages. It can be subjected to magnetization treatment and mixing treatment as well as being divided into fine particles and brought into gas-liquid contact. Thereby, compared to the ninth embodiment, the effect of highly concentrating the gaseous radioactive substance in the liquid [L] from a low concentration to a high concentration is high. Moreover, the effect of purifying gaseous radioactive substances in the liquid [L] by lowering the concentration in stages is high.

The aeration device 8 and water treatment devices 7, 9, and 10 of the seventh to tenth embodiments described above are not limited to being used for treating contaminated water containing radioactive materials, but can be used in other water treatment facilities. It is also possible to apply Further, the gas [G] used in the seventh to tenth embodiments is usually compressed air, but in particular, ultrafine particles of uranium, plutonium, strontium, cesium, and gaseous radon, krypton When using the water treatment equipment of the present application to treat liquids containing radioactive substances such as , tritium, etc., by using an inert gas consisting of a single species or a combination of nitrogen, helium, argon, etc., dissipation, aeration, It is possible to further improve separation, recovery, and concentration efficiency.

1, 2, 3, 5, 8...Aeration device 4,6,7,9,100...Water treatment device (aeration treatment tank)
10,80...Gas supply pipe (tubular body)
10a, 80a... Gas inlet 10b, 80b... Gas outlet 20... Stirring member 21... Impeller 21a... Perforation 22... Channel 30, 90... Channel pipe (tubular body)
30a, 90a...Inlet 30b, 90b...Outlet 31,91,92...Space 40, 40', 40''...Magnetized member 41...Magnetic material 60...Large diameter channel pipe 60a...Inlet 60b...Outlet 70... Mixing member (stirring member)
71...Blade body 71a...Perforation 72...Flow path 80...Gas supply pipe 200...Gas supply source 400...Storage tank 700a...First stripping tower 700b...Second stripping tower 700c...Third stripping tower 701a, 901... Raw water supply line 701b...Liquid flow pipe 701c, 903...Liquid discharge line 702a...Gas supply line 702c, 905...Gas discharge line 702b...Gas flow pipe 900...Stripping tower 1001...Chimney tray 1002...Connection line [L]... Liquid [G]…Gas

Claims (15)

a tubular body;
a stirring member that is configured by a plurality of blade bodies each having a plurality of perforations, and in which the plurality of blade bodies are arranged in a spiral shape in the same winding direction while maintaining a flow path in the center;
a magnetizing member installed inside the tubular body and magnetizing the fluid in the tubular body ,
Inside the tubular body, the stirring member and the magnetization member are arranged with a space therebetween along the extending direction of the tubular body.
Gas is supplied to the tubular body from an opening on the stirring member side, and liquid is supplied from an opening on the magnetizing member side.
Air diffuser. The air diffuser according to claim 1, wherein each of the vanes is provided so as to protrude from an inner wall of the tubular body into the interior of the tubular body. The air diffuser according to claim 1 or 2 , wherein the stirring member is provided as a mixing member for mixing different fluids. The air diffuser according to any one of claims 1 to 3 , wherein inside the tubular body, a plurality of the stirring members are arranged with spaces interposed therebetween along the extending direction of the tubular body. . The air diffuser according to claim 4 , wherein the plurality of stirring members arranged adjacently through the space have the winding directions of the blade bodies opposite to each other. According to any one of claims 1 to 5 , the magnetization member has a configuration in which a plurality of plate-shaped magnetic bodies arranged parallel to the extending direction of the tubular body are held in parallel at intervals. Air diffuser as described. The air diffuser according to any one of claims 1 to 6,
A water treatment device, comprising: a storage tank that stores liquid to be supplied to the aeration device. A water treatment device comprising a storage tank for storing liquid and an aeration device disposed at the bottom of the storage tank,
The air diffuser is
a tubular body;
a stirring member that is configured by a plurality of blade bodies each having a plurality of perforations, and in which the plurality of blade bodies are arranged in a spiral shape in the same winding direction while maintaining a flow path in the center;
a magnetizing member installed inside the tubular body and magnetizing the fluid in the tubular body,
The storage tank is constituted by a lower part of a diffusion tower with openings on both sides of a cylindrical container closed,
A gas discharge line is provided at the top of the stripping tower,
Another air diffuser is provided above the water line of the liquid in the stripping tower, in which the stirring member and the magnetizing member are arranged with a space therebetween along the extending direction of the stripping tower,
A water treatment device , wherein a raw water supply line for supplying the liquid raw water is provided above the another aeration device in the diffusion tower . The water treatment device according to claim 8 , wherein the aeration device is arranged at the bottom of the storage tank so that the magnetization member is arranged above the stirring member. The water treatment device according to claim 8 , wherein the aeration device is arranged at the bottom of the storage tank so that the magnetization member is arranged below the stirring member. The water treatment device according to any one of claims 8 to 10 , wherein a gas supply source that supplies compressed gas is connected to the tubular body of the air diffuser disposed at the bottom of the storage tank. The water treatment device according to any one of claims 8 to 11, wherein a discharge line for the liquid is provided at a position in the storage tank that includes the water line of the liquid. comprising a plurality of said diffusion towers that housed said air diffusers;
One of the plurality of stripping towers is provided with a discharge line for the liquid, and the gas supply source is connected to a diffuser housed therein,
Another one of the plurality of stripping towers is provided with the liquid supply line and the gas discharge line,
The plurality of diffusion towers are connected in series by a gas flow pipe extending from the top of one diffusion tower to a tubular body of a diffuser disposed inside another diffusion tower, and The water treatment device according to claim 11 , wherein the water treatment device is connected in series by a liquid flow pipe extending from a position including the water line of the tower to the one stripping tower. The water treatment device according to any one of claims 8 to 13, wherein a discharge line for the liquid is provided at the bottom of the storage tank. A plurality of the different air diffusers are arranged inside the diffusion tower along the extension direction of the diffusion tower,
A chimney tray and a connection line for supplying the liquid stored in the chimney tray to the another air diffuser disposed below the chimney tray are provided between the plurality of other air diffusers. The water treatment device according to any one of claims 8 to 14 .

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