JP3811887B2 - Cleaning processing equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cleaning processing apparatus.
[0002]
[Prior art]
The water purification plant is equipped with a sand basin where sewage from rivers and ordinary households is introduced, where the scum is lifted and the sedimented sand is pumped up and processed. .
[0003]
The dirty sand is recovered and incinerated and discarded or reused in the sea. However, if left as it is, a large amount of organic solids are attached and mixed in it. However, even if it is reused, there will be problems such as cracking in concrete.
For this reason, organic solids are made finer by incineration disposal while pulverizing dirty sand with a drum screen or the like so that the above problem does not occur. Not.
[0004]
[Problems to be solved by the invention]
Therefore, the present applicants have developed and proposed an effective cleaning processing apparatus that solves the above problems prior to the present application. The apparatus is equipped with a treatment tank, and an X zone is formed at the lower end of the treatment tank, and sewage is disposed above the control material through the grid-type control material arranged transversely from the X zone. In addition to introducing sewage, the sewage is guided into the vertical levitation pipe, is lifted with pressurized air together with a small spherical separation promoting piece for contact cleaning, and then lowered to the lower end of the levitation pipe. Then, it is guided again into the levitation pipe, and the waste sand is washed by such circulation and finally extracted from below, while the scum that has floated is discharged by another route. In the cleaning process, the introduced sewage is once removed, and then the purified water for cleaning is added to perform the circulation motion. Further, the control material is in a lattice shape or the like so that the separation promoting piece does not fall into the X zone outside the orbit.
However, the lower end of the levitation pipe opens upward from the control material. Therefore, the lower end opening is different from the X zone where the introduced dirty sand or the circulating dirty sand descends. As a result, the suction force acting on the lower end opening is not likely to act on the dirty sand in the X zone as it is. For this reason, air is blown to the lower part of the X zone so as to blow up the dirty sand, but the fact is that it was not possible to actively suck up the dirty sand due to the size of the X zone.
[0005]
The present invention has been made to solve the above-mentioned problems, and the object of the present invention is to increase the cleaning efficiency by placing it on a cleaning path that circulates without retaining the residue and / or dirt at the bottom of the treatment tank. An object of the present invention is to provide a cleaning processing apparatus that can perform the above processing.
[0006]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the invention described in claim 1 is directed to a treatment tank as an apparatus main body, wherein an introduction path for introducing sewage containing sediment and / or sewage sand into a lower part of the tank, and sewage in the tank A means for discharging, a means for supplying cleaning water, and a means for discharging the cleaned mud, and a means for raising the air and / or water is introduced into the processing tank. As a result, a levitation pipe having a contact levitation path that rises together with a plurality of separation promoting pieces is provided so as to extend in a vertical direction. A sedimentation path is formed which is introduced again at the lower end of the contact levitation path and forms a circulation path together with the contact levitation path, and the separated levitation material separated and floated from the introduced sewage is taken out of the tank at the upper part of the treatment tank. A scum removal device is installed. In the lower part of the processing tank, a porous control material is provided in the lower part of the processing tank so as to cross the lower part of the processing tank so as to leave the introduction path in communication with the lower part of the processing tank. In addition, in the lower part of the treatment tank, an up-and-down opening promotion pipe is inserted and supported so as to pass through the through hole provided in the porous control material, and the lower end of the up-lifting pipe The opening communicates with the control material lower region of the treatment tank, while the upper end opening of the pipe is arranged so as to face a slightly upper center in the lower end opening of the levitation pipe, and the levitation promoting pipe includes air and / or water. The upward flow generating means is in communication .
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.
1 to 6 show an embodiment of the present invention. In this embodiment, 1 is a cleaning processing apparatus, and the apparatus 1 is fixedly installed on a lower installation base with a gantry (not shown). . The cleaning processing apparatus includes a processing tank 2, which is basically a rectangular body, an upper part is a rectangular cylinder, and a lower part is an inverted quadrangular pyramid. Of course, other geometric shapes such as a cylindrical shape may be employed.
[0008]
The treatment tank 2 is provided with a lid 3 detachably at the top, and a through-tube 4 projects from a substantially center of the lid 3 and a detachable upper lid 5 is attached to the upper end thereof. Ribs 6 are appropriately attached to the lid body 3 and the upper lid 5.
[0009]
Reference numeral 8 denotes an inflow pipe, which is connected to the upper end corner of the treatment tank 2 for introducing sewage containing organic solids such as filth discharged from ordinary households, sand mud, etc. as indicated by an arrow. belongs to. In general, the residue is removed here. That is, in FIG. 5, 9 is a sewage sedimentation basin installed before the first sedimentation basin, 10 is a sewage pump well provided at the next stage of the sewage sedimentation basin 9, and these include a sewage inflow gate 11 and an automatic dust remover 12. Further, a sewage outflow gate 13 and a sewage pump 14 are provided, and a sand pump 15 is installed in front of the sewage outflow gate 13 of the sewage settling basin 9, from which organic solids and the like are received. The sewage containing the adhering / mixed sewage is pumped up and introduced into the treatment tank 2 through the inflow pipe 8 through the path indicated by the arrow A.
[0010]
Reference numeral 17 in FIG. 1 denotes an introduction path, which is a path for guiding the sewage mixed with sewage from the inflow pipe 8 downward, and is formed between the vertical guide plate 18 and the inner wall of the treatment tank 2. The guide plate 18 is made of expanded metal, but may be a normal SUS plate without punching, a punching metal, a lattice plate, or the like, while the plate 18 may be omitted. A porous control member 19 is provided at the lower end of the guide plate 18 so as to cross the lower portion of the processing tank 2 so as to leave the introduction path 17 in communication.
[0011]
The porous control member 19 combines the strips in a lattice shape and forms a cutting portion 19a at the lower end so that the resin film piece or fibrous material contained in the sewage is further finely cut when drawn upward. It is. In FIG. 1, the cutting portion 19 a is formed by sharpening the lower end of the band plate facing one direction at an angle of 45 degrees, but the cutting portion 19 a is formed on all the band plates including the band plate orthogonal thereto. It may be formed, or a band plate orthogonal to the paper surface of FIG. 1 may be provided so as to protrude downward from the other ones, and the cut portion 19a may be formed at the protruding portion.
[0012]
The mesh of the porous control member 19 has such a size that a separation promoting piece, which will be described later, does not fall down. Of the introduced sewage mixed with sewage, the sewage is settled in the X zone below the porous control member 19 and temporarily stored. The lower end of the X zone is a washed sand mud discharge port 20. A lower air supply port 21 is provided through the discharge port 20 as shown in FIG. The supply port 21 can be a water injection port, or both air and water can be injected.
[0013]
1 is a control plate, and the control plate 23 is fixed in a partition shape in the vertical direction so as to divide the remaining space of the introduction path 17 in the processing tank 2 into approximately two. The control plate 23 functions as a plate that prevents dirty sand, sand mud, a separation promoting piece, which will be described later, and the like from moving to the right in FIG. 1 and induces and collects only organic solids to the right. Therefore, the upper end is made lower than the water surface of the introduced sewage 24, and the lower end is provided in a partition shape with an interval so that the organic solids can float up. Are formed in a plurality of upper and lower stages to allow passage of organic solids, or the control plate 23 itself is formed of a net, a lattice-like material, punching metal, expanded metal, or the like. Moreover, only the upper half part of the control plate 23 can be made porous, and the lower part can be made of a plate material without holes, or vice versa. The control plate may be a horizontal cross-shaped control member 22 that rises diagonally to the right, such as an imaginary line. On the other hand, the control plate 23 may be omitted.
[0014]
A levitation pipe 26 having a contact levitation path 25 is fixed vertically at a substantially center between the guide plate 18 and the control plate 23. The pipe 26 is cylindrical and has a lower end opening 27, and an upper end opening 28 is formed at the end of a bending portion (bending portion) 29. The curved portion 29 bends at 90 degrees or more and about 105 degrees from the straight upper end portion of the contact levitation path 25, and the opening 28 faces slightly downward and faces the guide plate 18 with a gap. That is, the opening 28 opens in the direction opposite to the direction in which organic solids float and collect as scum. The contact levitation path 25 may be formed by a pair of vertically facing partition plates that are opposed to each other in the processing tank 2 instead of in a pipe shape. The same applies to the other embodiments.
[0015]
An upper air supply pipe 31 is connected to the lower part of the levitation pipe 26, and the pipe 31 is passed through the upper lid 5 and fixed through stays 32 that protrude from the levitation pipe 26. . As shown by an arrow C ₁ , air from the blower 33 in FIG. 5 is passed through the upper air supply pipe 31, and compressed air is jetted into the pipe from the lower part of the levitation pipe 26. You may make it spout water simultaneously. Further, as shown in FIG. 5, the air from the same blower 33, an arrow as C _2, the guided to the lower air supply port 21, in cooperation with the upper part of the jet air fried Spray the dirty sand accumulated Dirty sand is blown up in the levitation pipe 26. The levitation pipe 26 is fixed by using a pair of right and left angle members suspended from the upper lid 5 as a stay 34 and also using a horizontal bar 35.
[0016]
In FIG. 1, reference numeral 37 denotes a settling path, and the settling path 37 is formed by a vertical passage on the floating pipe 26 side of the guide plate 18. The settling passage 37 is a passage through which a large number of separation promoting pieces 38... Inserted so as to rise by blowing air (arrow C ₁ ) in the levitation pipe 26 descend as shown by arrow D _2. 38 ... Dirty sand and sand mud settle down and are guided toward the lower end of the levitation pipe 26.
[0017]
The levitation pipe 26 is set so that the lower end opening 27 is located above the porous control member 19 at a certain interval, and the separation promoting pieces 38... That have settled again pass through the porous control member 19. It is returned into the levitation pipe 26. Dirty sand or sand mud is sucked into the levitation pipe 26 together with the separation promoting pieces 38... Or via the porous control member 19 as indicated by an arrow D ₃ . At this time, the accumulated dirt is accompanied.
[0018]
1 is an intermediate sewage discharge port. The discharge port 40 is an opening for removing the sewage 24 introduced and accumulated up to the level of FIG. 1 as shown by an arrow E before the next purified water supply. As shown in FIG. 3, the wastewater and the organic solids are returned to the sewage pump well 10 through the intermediate drain valve 41 as indicated by the arrow E.
In addition, a scum collection container 42 capable of removing water is provided in the path of the arrow E as a portable type.
[0019]
2 is a water supply pipe, and as shown by an arrow F in FIG. 5, clean water is passed through the pipe 44 by opening the water supply valve 45, and the sewage of FIG. Supplied to level 24. This is done after the introduced sewage has been removed from the intermediate sewage outlet 40.
[0020]
Reference numeral 47 shown in FIGS. 1 and 4 denotes a scum removing device. The apparatus 47 includes a trough 48 fixedly provided on one upper side of the processing tank 2 (opposite to the inflow pipe 8), and a flexible rubber packing 49 attached along the front side of the trough 48. And a weir 50 attached to the packing 49 and capable of moving up and down. The weir 50 is made of SUS and is a hollow type that can be restored by buoyancy. Side seals 55 are provided on both sides of the weir 50 to prevent water from entering from the space between the treatment tank 2 side. An interlocking lever 51 is provided on the weir 50, and the lever 51 is driven up and down by an electric or hydraulic cylinder 52. The cylinder 52 is supported by a bracket 54 having a lateral shake prevention guide 53, and the lever 51 is connected to the lower end of the rod.
[0021]
The weir 50 usually has an upper end above the upper surface level of the sewage, and when pushed down by the cylinder 52, the scum S floating on the water surface is lowered by several centimeters below the same level as indicated by an imaginary line in FIG. The scum S and some water are discharged from the trough 48 through the scum discharge port 56. This is guided by a route indicated by an arrow E in FIG. 5, and the scum S... Is accumulated in the container 42 and the drained water is returned to the sewage pump well 10.
[0022]
FIG. 6 shows a flow sheet of the cleaning processing system. First, the sand pump 15 is stopped after being driven for a certain time (5 minutes). As a result, sewage mixed with sewage is introduced into the treatment tank 2 along the path indicated by the arrow A shown in FIG. 5 and reaches the water surface level shown in FIG. The operation switch of the cleaning processing device operation panel is turned on. After a certain settling time, the dirty sand settles in the X zone, and the upper sewage is separated. Then, the intermediate drain valve 41 is opened, and after 1 to 5 minutes, the valve 41 is closed. Thereby, the introduced dirty water is removed, and then clean water for purification is introduced into the treatment tank 2 as shown by the arrow F in FIG. The water level is on the order of FIG.
[0023]
The water supply valve 45 is closed after 20 to 40 minutes. The blower 33 is driven before and after and stopped after 5 to 10 minutes. As a result, compressed air is sent along the paths indicated by arrows C ₁ and C ₂ in FIG. 5, and is introduced into the levitation pipe 26 and the X zone as shown in FIG. 1, and the dirty sand in the X zone is blown up. At the same time, the separation promoting pieces 38 and the dirty sand are blown up like D ₁ by the air in the levitation pipe 26 and descend through the settling passage 31 like D ₂ . During this time, the organic solids and the like adhering to the dirty sand are separated from the sand mud by the contact / stirring of the separation promoting pieces 38 and float on the water surface.
[0024]
Kitanasuna is Yuki lowered riding downward flow with separation promotion piece 38 ... as shown by the arrow D _2, the suction flow by spouting fried is drawn again as arrows D ₃ through a lower end opening 27 has occurred. In addition to those that receive this suction, some of the dirty sand descends through the eyes of the control material 19, and the dirty sand that descends at the beginning of introduction into the tank and accumulates in the X zone. There is also.
[0025]
In order to make it possible to actively introduce the filth contained in the X zone among these filths into the levitation pipe 26 to be washed, a levitation promotion pipe (floating accelerating flow path) 60 is provided. It has been. The pipe 60 is a round pipe that is considerably thinner than the levitation pipe 26, and the lower end opening 60 a is positioned near the center in the X zone so that the middle passes through the through hole 19 b opened in the control member 19. The opening 60b is provided so as to face a slightly upper center in the lower end opening 27.
[0026]
A lower end portion of the levitation pipe 26 is formed as an expanding portion 26a that extends downward, and a lower end opening 27 is opened at the lower end thereof. A pair of stays 61 (the number of the plates is not limited thereto) is formed in the lower end opening 27. , 61, the upper part of the levitation promoting pipe 60 is fixedly supported. The details are shown in FIGS. The lower end portion of the levitation promoting pipe 60 may have the same diameter as that of the upper portion and may have a lower end opening 60a. However, in this embodiment, a tapered portion 60c having a lower diameter is formed to increase the suction force, and an opening 60a is formed at the lower end. Is open.
[0027]
Further, a floating promotion air supply pipe (upflow generation means) 62 is connected to a location above the control member 19 of the floating promotion pipe 60 and is connected to the blower 33 as shown in FIG. It is enabled supply as compressed air arrows C ₃ of. Incidentally, the air (or water or air and water) supply routes of arrows C ₂ may be omitted. When configuring the fluid supply routes as arrows C _2, it may be configured to Okoshisei upflow with agitating means by the supply of the fluid to agitate the fouling sand to rotate. The agitating means, for example, may be the driving blade by ejecting force of the arrow C ₃ rotates and configured to rotate in conjunction with another of the stirring blade in the X zone downward through a vertical axis in the vane.
In addition, as shown in FIG. 8, the space | interval between the upper end of the pipe 60 for floating promotion and the expansion part 26a is set so that the separation promotion piece 38 ... can pass with a margin. For example, when the separation promoting piece 38 has a spherical diameter of 25 mm, the interval can be about 35 to 40 mm.
[0028]
In the cleaning process, the floating accelerating pipe 60 is supplied compressed air as indicated by the arrow C ₃ injection, by increase forced flow generated by the injection, has accumulated to Kitanasuna or already lowered has been lowered fouling sand is sucked up through the lower end opening 60a as indicated by the arrow X _1. In Moto compressed air as indicated by the arrow C ₂ in FIG. 1 is incorporated jetted into the X zone, because fouling sand in the X zone is under agitation, Kitanasuna the floating accelerating pipe 60 without being left Sucked up.
[0029]
Dirty sand is sucked up and blown up into the ascending promotion pipe 60 and brought into the ascending pipe 26. Further, the rising force of the air ejected from the upper air supply pipe 31 is also applied to raise the inside of the floating pipe 26 together with the separation promoting pieces 38. Some of the dirty sand circulates from the upper opening 28 to the settling passage 37, but some of the dirty sand settles in the levitation pipe 26, and even this is already sufficiently washed.
[0030]
During these washings, the organic solids rise from other routes and accumulate on the water surface. As shown in FIG. 6, the scum composed of these is swollen by the cylinder 52 that operates 1 to 10 minutes after the blower 33 stops and the weir 50 is lowered from the water surface by pressing down, and the scum discharge port (as shown in FIG. 4). (It may be provided in the middle of the width of the processing tank 2) 56 is removed outside the tank and is collected in the container 42 through the path E in FIG. After the return of the cylinder 52, the intermediate drain valve 41 is opened and the sewage is removed by the E route.
[0031]
After the intermediate drain valve 41 is closed, it is checked whether or not the set count is reached, and the cycle from the opening of the water supply valve 45 is repeated as necessary. If the count is correct, the water supply valve 45 is opened together with the sand discharge valve 58 communicating with the sand mud discharge port 20, and the internal sand mud is collected in the container 59 of FIG. Thereafter, the water supply valve 45 is closed, the sand removal valve 58 is closed after a predetermined time, and the operation is finished. As described above, the number of washings can be arbitrarily set, and continuous and intermittent operation is possible. The cutting part 19a can guide a large floating substance mixed in the dirty sand among the introduced parts by cutting it with a flow velocity, pressure or the like. Note that reference numeral 59 in FIG. 2 denotes inspection means.
[0032]
Another embodiment may be configured as follows.
In the embodiment shown in FIG. 9, the upper end of the levitation promoting pipe 60 is also a pointed drawing portion 64. As indicated by phantom lines, the levitation promoting pipe 60 may be extended to a slightly narrower diameter above the levitation pipe 26. Although not shown, the middle of the levitation promoting pipe 60 (for example, a place where air is supplied) is formed into a narrow neck-like throttle, or conversely, the upper end of the levitation promoting pipe 60 is lower than the solid line in FIG. In particular, it may be lower than the lower end opening 27.
In the embodiment shown in FIG. 10 and FIG. 11, a lattice material 66, punching metal, a plurality of thin pipes, and the like are loaded in the lower end opening of the levitation promoting pipe 60. In this case, the levitation promoting pipe 60 is It may remain straight as illustrated, or it may be expanded, although not illustrated. The lattice material 66 or the like is one of the stops.
[0033]
In the embodiment shown in FIG. 12, the suction force is increased by providing a slightly thin suction pipe 68 at the lower end of the levitation promoting pipe 60.
In the embodiment shown in FIG. 13, a plurality of auxiliary suction ports 70 are opened in a slightly upper peripheral portion of the tapered portion 60 c of the rising promotion pipe 60.
In the embodiment shown in FIG. 14, the lower end portion of the levitation promoting pipe 60 is a constricted portion 72, and is configured together with the squirting of the arrow C ₂ from below, thereby making it easy to catch the dirty sand and squirt it up easily. Note that air may be introduced through the narrow neck portion of the narrowed portion 72 as indicated by a virtual line arrow, or air may be introduced from both the solid line and the virtual line arrow.
[0034]
The sand mud discharging means may be a screw conveyor type.
The separation promoting pieces 38 are loaded with 25 synthetic rubbers having a diameter of 25φ and a specific gravity of around 1.11, but are not limited to these numerical values and materials.
The upward flow generating means is air, pressurized water, or the like, but the levitation promoting pipe 60 may be equipped with a suction pump.
Although the air supply locations were three in the upper and lower locations, they may be combined into one. In that case, only the levitation pipe 26 or the levitation promotion pipe 60 is provided, and the air supply location is provided only in the X zone. be able to. In addition, a combination of two of these three air supply locations may be used separately.
The levitation promoting flow path may be an internal flow path of a pipe as in the embodiment or a flow path formed between a pair of opposing partition plates.
[0035]
The embodiment described above is an example of a cleaning treatment apparatus configured for the purpose of cleaning sewage, so as to introduce a scum and perform a cleaning process, or to simultaneously introduce a scum as a sewage and perform a cleaning sludge process. Can also be used.
[0036]
15 to 18 show another embodiment of the separation promoting piece.
[0037]
In the embodiment shown in FIG. 15, the separation promoting piece 80 has a spherical shape having the same diameter and material as those of the above embodiment, and through holes 81 are opened at a plurality of locations. . The opening edges of the through holes 81 are left as sharp as possible, but the present invention is not limited to this. Further, the shape, diameter, and number of the through holes 81 are not limited to those shown in the drawing. For example, the shape of the through-hole 81 may be a polygon such as a triangle or a square, and the diameter can be made thinner or thicker than that of the drawing, and the number can be made larger or smaller than that of the drawing. You can do it. Further, the through hole 81 may be a hole whose opening side is wider than the back side.
[0038]
In the embodiment shown in FIG. 16, the separation promoting piece 83 is not formed with a through-hole, but is formed with depressions 84.
The shape of the recess 84 may be a square hole, the number of the recesses 84 may be increased or decreased, and the recess may be made larger or smaller.
[0039]
The embodiment shown in FIG. 17 is for a separation promoting piece 87 having through holes 86... Having a larger diameter than that shown in FIG.
[0040]
The embodiment shown in FIG. 18 is for a separation promoting piece 90 having a single through hole 89 and a relatively large hole.
[0041]
15 to 18, each separation promoting piece is not spherical, but may be a dice shape or a polygon having a larger shape.
[0042]
【The invention's effect】
Since the present invention is a cleaning processing apparatus as described above, a cleaning sewage processing apparatus capable of increasing cleaning efficiency by being placed on a cleaning path that circulates without retaining the residue and / or sewage at the bottom of the processing tank. Can be provided.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an apparatus showing an embodiment of the present invention.
2 is a half sectional view showing a right side view of FIG. 1;
FIG. 3 is a plan view of the apparatus.
4 is a cross-sectional view taken along line IV-IV in FIG.
FIG. 5 is a flow sheet showing the relationship between a sand basin and a cleaning processing apparatus.
FIG. 6 is a flow sheet for explaining the operation of the cleaning processing apparatus.
7 is a cross-sectional view taken along line VII-VII in FIG.
8 is a cross-sectional view taken along line VIII-VIII in FIG.
FIG. 9 is a schematic longitudinal sectional view showing another embodiment.
FIG. 10 is a lower front view of a levitation promoting pipe showing another embodiment.
11 is an enlarged bottom view of FIG.
FIG. 12 is a perspective view of a lower part of a levitation promoting pipe showing another embodiment.
FIG. 13 is a front external view of a lower part of a levitation promoting pipe showing another embodiment.
FIG. 14 is a front external view of a lower part of a levitation promoting pipe showing another embodiment.
FIG. 15 is a front view showing another embodiment of the separation promoting piece.
FIG. 16 is a cross-sectional view showing another embodiment of the separation promoting piece.
FIG. 17 is a front view showing another embodiment of the separation promoting piece.
FIG. 18 is a front view showing another embodiment of the separation promoting piece.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Cleaning processing apparatus 2 ... Processing tank 3 ... Inflow pipe 17 ... Introduction path 19 ... Porous control material 21 ... Lower air supply port 24 ... Sewage 25 ... Contact floating path 26 ... Floating pipe 31 ... Upper air supply pipe 37 ... Sedimentation path 38, 80, 83, 87, 90 ... separation promotion piece 40 ... intermediate waste water discharge port 44 ... water supply pipe 47 ... scum removal device 60 ... pipe for levitation promotion.

Claims (1)

The treatment tank which is the main body of the apparatus has an introduction path for introducing sewage containing sediment and / or sewage sand into the lower part of the tank, means for discharging sewage in the tank, washing water supply means, and washed sand. A means for discharging mud, and a contact levitation path in which the one introduced into the treatment tank rises together with a plurality of separation promoting pieces by means of generating force of air and / or water. In the same processing tank, the rising flow in the contact levitation path is again introduced to the lower end of the contact levitation path together with the separation promoting piece, and the circulation path together with the contact levitation path. A scum removing device is provided in the upper part of the treatment tank, and a scum removing device for taking out the separated levitate separated and floated from the introduced sewage to the outside of the tank, Of the treatment tank In the section, a porous control material is provided across the lower part of the processing tank so as to leave the introduction path in communication with the lower part of the processing tank, and in the lower part of the processing tank, the porous An up-and-down opening promotion pipe is inserted and supported so as to pass through the through-hole formed in the control material, and the lower end opening of the up-lifting pipe communicates with the lower control material region of the treatment tank, while the upper end of the pipe The opening is arranged so as to face a slightly upper center in the lower end opening of the levitation pipe, and the rising promotion pipe communicates with an upward flow generating means of air and / or water. Processing equipment.

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