JPH08206682A - Oxygen supplying apparatus - Google Patents

Abstract

PURPOSE: To effectively carry out purification without causing cost up by installing a bypass pipeline besides a pipeline of a main pipe, making an oxygen supplying means communicate with at least either one of these pipelines, and making it possible to switch to the bypass pipeline at the time when the pipeline of the main pipe cannot be used. CONSTITUTION: A pump site 1 and a treatment site 2 are made to communicate with each other through main pipe 3. While being kept at a distance one another, a manhole 4 as a relay part and a plurality of valves 5, 5 are installed in the main pipe 3. Besides the main pipe 3, a bypass pipe 6 is laid and a plurality of valves 5, 5, are installed also in the bypass pipe 6 while being kept at a distance mutually. Respective valves 5, 5 are so switched as to use the bypass pipe 6 at the time when the main pipe 3 cannot be used. An air supplying pipe 9 is so installed in an elbow 8 communicating with the main pipe 3 in the upper stream side of a valve 5 as to be along with the flow of sewage and the tip open part of the pipe 9 is cut slantingly and faces in the flow direction of the sewage. Moreover, magnets 11 composed of a pair of N-S are installed in the outer circumference in the longitudinal direction, so that air is made fine and in this case, magnets are installed in a plurality of stages.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oxygen supply device for supplying oxygen to sewage and sewage to purify sewage by activating microorganisms and to protect pipes forming a water channel system.

[0002]

2. Description of the Related Art In a waterway system such as a water supply system or a sewer system, a treatment plant is essential, and sewage is purified only when it reaches the treatment plant.

[0003]

However, there is a limit to the processing at the same processing plant, and the unprocessable state is actually caused.
There are problems such as the need to install advanced processing equipment, which is very costly.

The present invention has been made to solve the above problems, and an object of the present invention is to provide an oxygen replenishing device capable of effectively purifying without increasing the cost.

[0005]

In order to solve the above-mentioned problems, the invention according to claim 1 is a device for supplying at least oxygen to the upper and lower drainage systems, wherein a bypass path is provided separately from the main pipe path, and Oxygen supply means is placed in communication with at least one of these two paths so that the main tube path can be switched to use the bypass path when not in use.

According to a second aspect of the present invention, there is provided a device for replenishing at least oxygen to the water and sewer system, wherein the oxygen replenishing means is arranged in communication with the pipe path of the water and sewer passages and the relay portion such as a box or manhole. ing.

According to a third aspect of the present invention, in the second aspect, the relay section is provided with a lid having a through hole for inflowing rainwater, and the lower part of the relay section collects rainwater. Part is provided, and an S trap is provided in communication with the water collection part.

According to a fourth aspect of the present invention, in the third aspect, the water collecting portion is formed with a hole through which rainwater flows down and only air from below passes, and the water collecting portion has the same structure. On the lower side, deodorizing means such as activated carbon for passing air from below is provided.

According to a fifth aspect of the present invention, there is provided a device for replenishing at least oxygen to the upper and lower sewage systems, and a sewage guide is provided at the level of the sewage to make the sewage as an upward flow and then to flow it down. The supply port is located because it is oxygen, corresponding to the sewage flow area.

According to a sixth aspect of the present invention, there is provided a device for replenishing at least oxygen to the upper and lower drainage systems, wherein a guide having an ascending surface and a descending surface is attached to the bottom of the pipe passage, and oxygen replenishing means is provided through the guide. Is provided.

According to a seventh aspect of the present invention, there is provided a device for replenishing at least oxygen to the upper and lower drainage systems, wherein an oxygen replenishment pipe communicating with the pipe path is provided so as to escape to the ground. An oxygen blowing means is provided that rotates at.

The invention according to claim 8 is a device for replenishing at least oxygen to the upper and lower sewer systems, wherein the relay portion of the pipe path is provided with means for dropping the inflowing sewage stepwise.

According to a ninth aspect of the present invention, there is provided an apparatus for replenishing at least oxygen through an inflow pipe having an elbow for introducing treated water into an aeration tank of an upper and lower drainage system,
In addition to providing a throttle at the front stage of the elbow part to introduce oxygen at the rear side, an oxygen supply pipe is inserted through the elbow part in a substantially vertical shape, and a throttle is arranged on the outer circumference of the oxygen supply pipe to arrange the inside of the pipe. Oxygen from (1) can be mixed with the treated water, and below the throttle, a stirring means is provided for dropping the treated water and the introduced oxygen into the introduction tank such as the aeration tank.

[0014]

The present invention will be described in detail below with reference to the illustrated embodiments. 1 and 2 show an embodiment of the present invention, in which 1 is a pump at a pumping station, 2 is a processing station downstream thereof, and a main pipe path is provided between the pumping station 1 and the processing station 2. It is connected by the main pipe 3 which is. Further, in the main pipe 3, a manhole 4 which is a relay portion and two valves 5 are arranged separately.

6 is a bypass pipe (bypass path),
Two valves 5 are also arranged in the pipe 6 so as to be separated from each other, and the bypass pipe 6 can be switched by the valves 5 ... To use the main pipe 3 when it is not used. That is, when the search television device capable of traveling in the sewer pipe travels in the main pipe 3 to perform the search, the upper valve 5 is closed to enable the search between both valves 5, and the valve 5 on the bypass side is in the meantime. Since it is open, there is no need to stop the flow of sewage.

FIG. 2 is an enlarged view of a portion A of FIG. 1, in which an elbow 8 communicating with the main pipe 3 is provided with an air supply pipe (oxygen supply means) 9 so as to substantially follow the flow of sewage.
The tip opening is in the shape of a slant and faces the side where the sewage flows. The supply pipe 9 is sealed at the insertion portion by the seal 10, but may be inserted and fixed. Further, a permanent magnet (or electromagnet) 11 consisting of a pair of N and S is arranged on the outer circumference in the length direction of the pipe 9 so as to atomize the air, and in this case, it is arranged in a plurality of stages. .

As shown in FIG. 2, the main pipe 3 of the elbow 8
A corrugated plate 12 is attached to the inner surface of the front side of the corrugated plate 12 to further reduce the size of the air to improve the mixing effect. Instead of the corrugated plate 12, a plurality of stages of protrusions extending in the inner diameter direction may be arranged. It should be noted that the corrugated plates 12 or the protrusions do not all have the same height and directionality, but the height and the extending direction can be changed. Further, the pipe 9 may be arranged in a plurality of stages. In this case, the tip can be made to face the portion on the inner diameter side of the elbow 8 where vacuum is likely to occur.

FIG. 3 shows a general vacuum type sewer system, which comprises a vacuum valve unit 16, a vacuum valve unit 16 having a water level controller 15, and a vacuum station 17. The vacuum station 17 has two types, an ejector type and a vacuum pump type. A sewage pipe 20 from a meeting room (made of concrete or vinyl chloride) 19 connected to a sewage pipe 18 flowing from a home or the like is connected to the unit 16 so as to communicate therewith.
21 is a vacuum sewer pipe.

In these, first, in the hall 19, the two air supply pipes 2 are inserted through the through holes 23 of the lid 22.
4 is inserted, one of which is provided with its tip facing the inflowing portion of the wastewater from the wastewater pipe 18, and the other of which is provided facing the portion where it flows into the wastewater pipe 20 from the chamber 19. Further, in the vacuum valve unit 16, an air supply pipe 26 is provided so as to face the location where the dirty water flows and the pipe 25 in front of the vacuum valve.

FIG. 4 shows an air supply pipe 29 provided in a relay section 28 such as a public box, a unit box or a manhole. The pipe 29 has a through hole 31 of the lid 30.
One is provided so as to communicate with the outside through the sewage pipe 32 so as to face the sewage flowing in from the sewage pipe 32, and the other one faces the inside of the sewage pipe 33 on the outlet side. In these supply pipes 29, holes may be formed on the side surface near the tip of the supply pipes 29 so that dirty water can flow into the supply pipes 29 to improve the air outflow.
This point can be similarly configured in the embodiments of FIGS. 1 to 3 and subsequent embodiments.

FIG. 5 is applied to something like the relay unit 28. The rainwater is used to prevent the offensive odor from spreading from the inside of the relay unit 28 while the rainwater is used for the relay unit 28.
An embodiment in which the material is poured into the inside is shown. It is usual that a bad smell is accumulated in the relay portion 28 and diffuses to the outside from the through hole 31 of the lid 35. This offensive odor should be prevented from being released. In this embodiment, the water collecting part 3 is provided below the lid 35.
6 is provided to collect rainwater and guide them to the S trap 37 so that a part of them is collected, whereby the stinking rainwater does not emit a bad odor from below,
Moreover, the rainwater surely flows in.

In addition to the embodiment shown in FIG. 5, FIG. 6 shows a structure in which a bad odor is deodorized through a purifying agent 39 such as activated carbon and is discharged from the through hole 31. In addition, the water collection part 40 is formed with a through hole 41 in a stepped shape. In addition, S trap 3
The entrance of 7 may be eccentrically provided in the relay part 28 like a virtual line.

FIG. 7 shows that a new relay section 44 with the S trap 37 can be attached in the middle of the dirty water pipe 43.

FIG. 8 shows an air replenishing pipe 47 provided in the relay portion 46 which is a manhole. The relay portion 46 is connected with sewage pipes 48 and 49 on the inlet side and the outlet side. The pipe 47 is the sewage pipe 4 on the inlet side.
It faces the point where the sewage flows from 8 and especially the supply pipe 4
The air passage 7 is connected to an air passage hole 51 formed vertically in the upper end portion of the peripheral wall 50. The through hole 51 is opened in advance or after the fact. The air supply pipe 4
A guide plate 52 in the form of a curved plate, which is attached to the lower end of 7 or fixed to the dirty water pipe 48, may increase the flow rate of the dirty water to effectively draw out air. This guide plate 52 can be applied to all other embodiments. In addition, a stirring blade 53 is provided at the bottom of the relay portion 46 so as to idle with the flow of dirty water and efficiently mix the air from the air supply pipe 47.

FIG. 9 shows a hole 56 in a lid 56 such as a three valve.
7 is opened and is connected to an air supply pipe 58 passing through the valve body 55. Valve body 55
The pipe 58 may be inserted so as to pass through only.

In FIGS. 10 and 11, the air supply pipe 6 is attached to the gate 59 which is constructed in a sewage treatment plant or a general sluice.
The gate 59 has guides 61 on both sides.
In this case, the air supply pipes 61 are arranged on both sides of the back side of the guide 61 so as to face the spread sewage. The air supply pipe 60 may be exposed to a portion where the dirty water flows through the inside of the gate 59 itself.

FIG. 12 shows a ball-shaped telescopic flexible tube used for connection for water supply and sewerage, etc. The tube has receiving balls 63 at both ends, and movable balls 64 are closely fitted to these. Connection tube 6 between movable balls 64
5 is connected, but the air supply pipe 66 is faced to this pipe as well. The point facing is the receiving ball 6
3 or via the movable ball 64 or the connecting pipe 65. Although the illustrated one is a double type having balls on both ends, only one may be a single type having a ball structure.

FIG. 13 shows an example of a bellows with sleeves. The bellows defines the bellows portion 70 with front and rear tightening flanges 71 and tightening bolts 72. The air supply pipe 74 is made to face through this connecting pipe 73, or through the convex portion or the concave portion of the bellows portion 70. It faces the air supply pipe 74. It is also applicable to other types of bellows. For example, like a virtual line,
There is one in which the bellows portion is formed by a bulge of one step.

FIG. 14 relates to an arch culvert having a manhole connection hole 76 formed therein. An air hole 78 is opened obliquely upward in the middle of a bottom wall 77 of the manhole connecting hole 76, and an air supply pipe 79 passing through the outside of the arch culvert is provided in the hole 78. Connected. A pipe may be connected to the side wall.

In FIG. 15, the spacer 83 is fastened together between the flanges 82 of the water pipe or the sewer pipe 81, and the air supply pipe 84 is passed through the spacer 83. The pipe 84 faces the bottom space of the pipe so that it can always deal with dirty water. The spacer 83 is attached via the packing 85, but the spacer 83 itself may be made of rubber and the packing 85 may be omitted.

FIG. 16 shows an example in which the pipes 87 are connected to each other by a mechanical joint ring. The connecting ring has an intermediate connecting pipe 8
8 and a rubber ring 89 and a push ring 90, which are tightened and fixed with a tightening bolt 91 so as not to leak.
For example, the air supply pipe 92 may be exposed from between the pipes 87 through the body of the connection pipe 88. The same applies to other types of joint rings. In addition, the air supply pipe 92 has a slanted end so that air can be drawn out from any of the ends, and the guide plate 9
3 also has a V-shaped side face to collect sewage. It is not limited to this.

FIG. 17 shows a water and sewer pipe 9 provided with water leakage prevention fittings.
An example is shown in which 5 pieces are connected. 96 is a projecting ring portion protruding from one of the water pipes 95, 97 is a rubber ring, and 98 is a rubber ring.
Is a push ring, 99 is a retaining ring, and 100 is a tightening bolt. The air supply pipe 101 is exposed to this type of metal fitting. This pipe 101 may pass through the peripheral portion of the water and sewer pipe 95, a rubber ring 97, or a protruding ring portion 96, as indicated by an imaginary line. The diffuser 102 may be attached, the guide plate 103 may be attached, or the slit 104 may be attached. Further, the kerf 105 may be provided on the flow direction side. These are done to make the extraction of air more effective. Such a connector is not limited to the one shown in the figure.

FIG. 18 shows a proper position of the tee 107, for example,
An air supply pipe 108 is arranged at the branch point.
The tee 108 may have one tube protruding obliquely as shown by an imaginary line. It is also applicable to a diffuser (concentric type or eccentric type). Furthermore, bag joints and 45 °
An air supply pipe will also be installed on the elbow. Further, as shown in the drawing, it is also applied to the reduced diameter socket 109 and the connection socket 110.

FIG. 19 shows an expandable pipe 112 made of resin or the like and formed in a bellows shape, and an air supply pipe 113 arranged therein. The pipe 113 is made to face through the groove at the bottom, but there are several types of how to face the pipe, such as an imaginary line. That is, the one shown at the left end simply faces the pipe 113, while the one shown in the middle allows the air supply pipe 113 to be attached to the inner circumference of the groove so as to blow out air from a plurality of holes. The one on the right end has the guide plate 114.

FIG. 20 shows a sewer (or tap water) pipe 115.
The ejector 117 can be fixed to the inside by a stopper 116, and an air reservoir 118 and an air hole 119 are formed in the ejector 117. It is designed to be input from multiple locations. Tube 1
Ejector 117 can be placed anywhere if 15 holes are made.
Can be fixed.

FIG. 21 shows a guide 122 provided along the bottom surface of the pipe 115. Since the guide 122 has an inner surface that is an upward curved surface and a downward curved surface, the traveling roller 123 of the TV for searching can be easily used. It is capable of moving forward and backward, and an air hole 124 and an air supply pipe 125 are provided through the guide 122. It should be noted that a tubular guide along the entire inner surface of the pipe 115 may be used. in this case,
A thread is formed on the outer circumference of the air supply pipe 125,
The guide 122 may be attached and detached by screwing the pipe 125.

22 and 23, a half ejector 128 in the shape of the upper half of the ejector, which is longer than the upper half surface of the pipe 127, is detachably attached to the pipe 127 by a stopper 129.
An air reservoir 130 and a plurality of air holes 131 are provided. In the embodiment, the solid shape is used, but a warped plate shape without an inside may be used.

In FIG. 24, the first and second pipes 1 are attached to the pipe 133.
34 and 135 are provided so as to stand on the ground, and a cover 13 is provided on the upper end of the first pipe 134 via a valve 136.
When the sensor 138 provided in the cover 137 detects the odor, the valve 139 in the second pipe 135 is opened, and the malodor is discharged from the discharge portion 141 through the activated carbon 140. The discharge part 141 is
It has a vane 142 for distribution and a cover 143.

FIG. 25 shows an example in which air is forced into the pipe 145. That is, the air supply pipe 146 facing the pipe 145 rises to the ground, and an air blade 149 driven by the windmill 147 and the gear 148 is provided at the upper end of the air supply pipe 146. By rotating the blade 149, air is supplied. It is forced into the tube 145.

FIG. 26 shows another embodiment of the hall,
The meeting place is provided with a stair-like pad plate 152 at the place where the sewage from the sewage pipe 151 on the entrance side flows down. This allows the air to mix efficiently. Further, an air supply pipe 154 is provided on the outlet side pipe 153, and along with this, a spiral strip 155 made of a strip-shaped plate is arranged around it to effectively mix air. FIG. 27 is similar, in which a pipe 157 is arranged at the outlet of the pipe 151 and a plurality of protrusions 158 are provided therein.
This is a good mixture with air. Also, pipe 1
On the 53 side, the bottom of the hall is made a lower recess 159, and a spiral 155 is arranged on it.

FIG. 28 shows an embodiment in which the air is forcibly blown into the pipe (sewage pipe) 161 in multiple stages. 162 is a blower, 163 is an air pressure tank, 16
Reference numeral 4 is a check valve, and 165 is an opening / closing valve. In the longitudinal direction of the pipe 161, the air supply pipe 1 is provided so as to face the bottom thereof.
There are 66 ... In this example, it is possible to forcibly blow in air at a pressure higher than the pressure inside the pipe.

In the embodiment shown in FIGS. 29 to 33, for example, treated water which is sewage from the final settling basin is disposed in the aeration tank 200 installed in the sewage treatment equipment (or the water treatment equipment may be used). Oxygen is replenished to the treated water in the inflow pipe 201 with an elbow for introducing the arrow X) of 29. This device is used, for example, when supplementing oxygen to sewage (treated water mixed with sedimentation sludge) that is first pumped from within the sedimentation basin and then introduced back into the sedimentation basin, and to other pipeline systems. Is also used.

The inflow pipe 201 is an inlet pipe 203 fixed so as to horizontally pass over the tank wall, and the same pipe 203.
An elbow 205 connected to the via via a flange 204,
The lead pipe 207 is vertically connected to the lower end of the elbow 205 via a flange 206. Introduction pipe 20
An oxygen replenishing board 209 with a diaphragm 208 is interposed between the No. 3 and the elbow 205.

The diaphragm 208 has a taper surface of about 45 degrees, and the rear side thereof is a concave shape having a large diameter, and the oxygen introduction path 210 is opened in the concave shape in a four-way radial (FIG. 30) arrangement. ing. These oxygen introduction paths 21
0 is based on the fact that the treated water mainly flows in the lower half of the pipe, and may be arranged only around the lower part of the pipe to correspond to it. The oxygen supply path 210 has oxygen supply pipes 211 ...
Is connected. Reference numeral 212 represents an air pressure gauge. In addition,
The arrow Y indicates the inflow situation of air introduced by suction.

The elbow 205 is a bent pipe having a slightly longer lower portion, and a pipe 214 is vertically provided at the bent portion of the elbow 205, and a flange 215 is attached to the upper end of the pipe 214. . Same flange 215
An oxygen supplement outer pipe 217 is vertically supported through the other flange 216 in a penetrating manner.

A flange 218 is attached to the upper end of the oxygen replenishment outer pipe 217, and the flange 2
A flange 220 is attached to 18 via a stopper 219. At the center of the flange 220, the oxygen supply inner pipe 22 passes through the center of the outer pipe 217.
1 is inserted. Arrow Y through the inner pipe 221
As described above, oxygen (air) is introduced and discharged from the lower end. 222 is a valve.

On the outer circumference of the upper part of the inner pipe 221, the adjusting tool 2 is provided.
A tapered introduction amount adjusting member 225 that is vertically movable by 24 is attached. By moving the member 225 up and down, the amount of air flowing in from the opening of the flange 218 can be varied. On the other hand, the inner pipe 221
A plurality of control plates 227 ... Are projectingly provided on the outer periphery of the oxygen control outer pipe 227. It is controllable so as to flow out from the lower end outlet of 217.

The treated water in the elbow 205 flows down while being mixed with the air previously replenished in the oxygen replenishment outer pipe 217, and becomes an outflow by the flow control plate 229 protruding on the outer periphery of the lower end of the outer pipe 217. Is controlled so that the outer pipe 2 is formed in the recessed area 230 below it.
Air from 17 is drawn out in a suction state and mixed with the treated water in the second stage. In addition, a means for controlling the flow of the treated water inward may be arranged on the inner circumference of the inflow pipe 201 so as to be positioned below the flow control plate 229.

A sleeve 23 is provided at the lower end of the inner pipe 221.
2, an auxiliary pipe 233 is detachably connected, and an agitating blade 234 is rotatably attached to the outer periphery of the auxiliary pipe 233.
Is set. As shown in FIG. 31, the blades 234 are arranged in a radial arrangement, but the plate surfaces are slanted with respect to the flow of the treated water, and the blades 234 face each other in a downward spread shape as shown in FIG. It is effective in freezing the flow of treated water and improving the air mixing effect. The blade 234 may be a fixed blade.

Further, on the inner circumference of the lower end of the inflow pipe 201, there are arranged upper and lower mixing promoting blades 236 ... and Lower mixing promoting blades 237. The plane arrangement of the upper blades 236 is shown in FIG. 32, and the upper blades 236 project from the inner circumference in an oblique direction with an inclination of 15 degrees with respect to the vertical line. Further, the lower blade 237 is arranged so as to control the flow of the treated water in the opposite direction to the upper blade 236 as shown in FIG.

29 to 33, a straight pipe may be interposed between the introduction pipe 203 and the inflow pipe 201. In this case, the microbial species can be introduced through a straight pipe. Also, the diaphragm 208
Can be placed several steps before and after. Further, although it is composed of the inner and outer pipes 221, 217, it is also possible to make a single pipe. In addition, a part of the downwardly constricted taper member is disposed on the outer periphery of the lower end outlet of the inflow pipe 201 so that the air in the outer peripheral region is guided by the fall of the treated water, for example, along the line of the arrow Y. You may provide so that it may hit the flow of. Furthermore, although the lower part of the inflow pipe 201 is vertical,
It can also be slightly inclined. In addition, a control plate that promotes mixing may be arranged at a portion of the elbow 205 where the treated water comes into collision.

[0052]

Since the present invention is the oxygen replenishing device as described above, the purification can be effectively performed without increasing the cost.

[Brief description of drawings]

FIG. 1 is a schematic diagram of an oxygen supply device with a bypass showing an embodiment of the present invention.

FIG. 2 is an enlarged view of a portion A in FIG.

FIG. 3 is a schematic diagram showing an embodiment applied to a relay unit.

FIG. 4 is a schematic view showing another embodiment of the relay section.

FIG. 5 is a schematic view showing another embodiment of the relay section.

FIG. 6 is a schematic view showing another embodiment of the relay section.

FIG. 7 is a schematic diagram showing another embodiment of the relay section.

FIG. 8 is a cross-sectional view showing an embodiment when applied to a relay section.

FIG. 9 is a sectional view showing an embodiment when applied to a valve.

FIG. 10 is a cross-sectional view showing an embodiment when applied to a gate.

FIG. 11 is a side sectional view of FIG. 10;

FIG. 12 is a half cross-sectional view showing an embodiment of a stretchable flexible tube.

FIG. 13 is a half sectional view showing an example of a bellows.

FIG. 14 is a side view showing an example of an arch culvert.

FIG. 15 is a cross-sectional view showing an embodiment in which an air supply pipe is inserted between the pipes.

FIG. 16 is a cross-sectional view showing an embodiment in which pipes connected by connecting rings are provided with air supply pipes.

FIG. 17 is a cross-sectional view showing an example of a water leakage prevention fitting.

FIG. 18 is a schematic view showing an example in which various kinds of connecting tools are combined.

FIG. 19 is a schematic view showing an embodiment applied to a flexible tube.

FIG. 20 is a sectional view showing an embodiment equipped with an ejector.

FIG. 21 is a sectional view showing another embodiment of the ejector.

FIG. 22 is a cross-sectional view showing an example of a half ejector.

FIG. 23 is a side sectional view of the same embodiment.

FIG. 24 is a schematic diagram of an odor removing device.

FIG. 25 is a schematic view showing an example of a forced blowing type.

FIG. 26 is a schematic view showing another embodiment of a relay section of a meeting place or the like.

FIG. 27 is a schematic view showing another embodiment of a relay section such as a meeting place.

FIG. 28 is a schematic view showing another embodiment of the forced air blowing type.

FIG. 29 is a vertical cross-sectional view showing another embodiment.

30 is a cross-sectional view taken along the line AA of FIG.

31 is a cross-sectional view taken along the line BB of FIG.

32 is a cross-sectional view taken along the line CC of FIG.

FIG. 33 is a sectional view taken along line DD of FIG. 29.

[Explanation of symbols]

9, 24, 26, 29, 47, 58, 60, 66, 7
4, 79, 84, 92, 101, 108, 120, 12
5,146,154,166 ... Air supply pipe.

Claims (9)

[Claims] 1. A device for replenishing at least oxygen to an upper and lower sewer system, wherein a bypass route is provided separately from a main pipe route, and an oxygen replenishing means is placed in communication with at least one of these two routes. Oxygen supply device that can switch to use the bypass route when the pipe route is not used. 2. An oxygen replenishing device for replenishing at least oxygen to a water and sewer system, wherein the oxygen replenishing means is arranged in communication with a pipe path of the water and sewer passages and a relay portion such as a box or a manhole. 3. The relay unit according to claim 2, wherein the relay unit includes a lid having a through hole through which rainwater flows in, and a rainwater collecting unit for collecting rainwater is provided at a lower portion of the relay unit. An oxygen replenishing device provided with an S trap in communication with the water collecting section. 4. The water collecting section according to claim 3, wherein a hole through which rainwater flows down and only air from below passes is formed, and below the water collecting section, a downward hole is formed. Oxygen replenishing device equipped with deodorizing means such as activated carbon that allows air to pass through. 5. A device for supplying at least oxygen to the upper and lower sewer systems, wherein a sewage guide is provided at a level at which sewage flows to make the sewage as an upward flow and then flow down, and the sewage flow area of the guide is provided. Oxygen replenishing device where the replenishment port is located. 6. An apparatus for replenishing at least oxygen to an upper and lower waterway system, wherein a guide having an ascending surface and a descending surface is attached to a bottom portion in a pipe path, and oxygen replenishing means is provided through the guide. Supply device. 7. An apparatus for replenishing at least oxygen to an upper and lower drainage system, wherein an oxygen replenishment pipe communicating with the pipe path is provided so as to be pulled out to the ground, and an oxygen blowing means rotating by wind force is provided at an upper end of the pipe. Oxygen supply device. 8. An oxygen replenishing device for replenishing at least oxygen to the upper and lower sewer systems, wherein the relay portion of the pipe path is provided with means for dropping inflowing sewage in a stepwise manner. 9. An apparatus for replenishing at least oxygen through an inflow pipe with an elbow for introducing treated water into an aeration tank of an upper and lower drainage system, wherein a throttle is provided at a front stage of an elbow portion and a rear side thereof is provided. In order to introduce oxygen, the oxygen supply pipe is inserted almost vertically through the elbow portion, and a throttle is arranged on the outer periphery of the oxygen supply pipe to allow the oxygen from the inside of the pipe to be mixed with the treated water, and An oxygen replenishing device is provided below the throttle with stirring means for mixing the treated water and the introduced oxygen into the introducing tank such as the aeration tank.