KR102250273B1 - Wastewater treatment system having modularized micro bubble diffusers - Google Patents

Abstract

The present invention is a method in which a plurality of nozzle plates, air intakes and mixing chambers are formed in the wastewater chamber by having one wastewater chamber and an air intake pipe long, and the air mixed with wastewater is further refined and ejected through a mixing tube. By modularizing individual microbubble diffusers, manufacturing and construction costs can be significantly reduced, and automation of the system, which was difficult due to economic issues in existing devices, can be facilitated, and wastewater and/or air supplied to its own module or other modules are used. Thus, it provides a wastewater purification treatment facility having a modular microbubble diffuser capable of efficiently removing foreign substances through reverse washing of a nozzle.

Description

Wastewater treatment system having modularized micro bubble diffusers

The present invention relates to a modular wastewater purification microbubble diffuser, and more particularly, a mixing chamber separated from the wastewater chamber by pressure of pressurized wastewater introduced into a pipe equipped with a plurality of wastewater purification microbubble diffusers in a tubular wastewater supply pipe. In the case of ejection, it is possible to improve the purification efficiency of contaminated wastewater by increasing the contact area between suction wastewater and air around the plurality of nozzle tips located at the entrance of the mixing chamber, while drastically reducing manufacturing cost, on-site construction cost, and construction period. It relates to a wastewater purification treatment facility having an economical modular microbubble diffuser capable of.

Due to the rapid development of modern industry, industrial waste, food waste, household sewage, and agricultural and livestock waste, which are poured out every day, cause secondary environmental pollution caused by contaminated wastewater, that is, acidification and odor of the soil. It is also emerging as a serious problem as an enemy.

If high-concentration wastewater is not purified and discharged as it is, eutrophication occurs due to various organic substances, microorganisms, and toxic compounds, which not only destroys the aquatic ecosystem, but also directly or indirectly causes serious damage to humans.

In the activated sludge method according to the prior art, since a separate air compressor is used to inject air into the diffuser, a lot of power is required, and the contact area between the air bubbles and the wastewater is small and the height of the wastewater storage tank is very low. There is a problem that the residence time for sufficiently dissolving oxygen is insufficient and the installation area is large.

In addition, the conventional microbubble diffuser has disadvantages in that it is difficult to use the device and the manufacturing cost is very high if the device is clogged due to the characteristics of the target fluid contaminated by various types of materials. As such, before clogging of the device occurs, it is necessary to frequently perform cleaning to remove accumulated debris or foreign matter inside the device, but there is a hassle of having to disassemble and reassemble the device one by one. In particular, in the case of livestock wastewater, the clogging phenomenon is very severe between the passage and the passage by the hair of animals, and the concentration of sludge is very high, and the clogging phenomenon is a problem.

In particular, when the air diffuser method is applied to livestock wastewater, which is a high-concentration organic material, the performance gradually decreases and cleaning is required every 6 months to once a year, so a separate preliminary nitrification tank is required, so the economical efficiency is very low.

In order to solve the above problem, in Patent Document 1 (Korean Patent No. 10-1108279) registered by the present inventor, microbubbles are generated by stirring and colliding the pressurized wastewater and air flowing into the device. The passage is expanded and the flow of water is changed using a cleaning device installed in the passage to prevent clogging of the passage due to wastewater debris or foreign substances.

Patent Document 1 describes that each microbubble diffuser device is equipped with various parts such as a wastewater chamber body, wastewater, and air shutoff valve in each device, so manufacturing cost is high and the wastewater, air supply pipe, and mixing pipe must be individually joined during field construction. Therefore, the construction cost and construction period are long, so economic product development is required to reduce the cost.

In addition, Patent Document 1 is provided with a cleaning device for cleaning the wastewater passage, but when foreign matter or debris is deposited on the inner wall of the passage due to long-term use, the wastewater flow direction is changed to clean it.

However, in the method of cleaning the passage by simply changing the flow of water by reverse driving the pump, there is a problem in that air is sucked into the suction side of the pump during reverse flow and the pump stops operating. This is due to the fact that the nozzle outlet and the air inlet for mixing air are located at the outlet of the wastewater jet nozzle of the microbubble diffuser, so that air is often sucked in before water. On the contrary, since the air flow is the same during normal operation and in the cleaning mode, it is not possible to apply a non-return valve. As a solution to this, an automatic electric valve is attached to each microbubble diffuser, but this is economical and technical difficulties. . This method of cleaning the wastewater passage of the nozzle by changing the pump operation direction to the reverse direction and changing the flow direction of the water (wastewater) to the opposite direction prevents passage clogging and can be easily cleaned because the wastewater passage cannot be completely penetrated. There is a need for improved cleaning methods.

On the other hand, the cleaning device of Patent Document 2 (Korean Patent No. 10-1767442) by the present applicant removes debris or foreign matter accumulated in the passage through which wastewater flows, thereby preventing the passage from being blocked, so that it can be moved up and down. It includes a lifting body, a needle rod protruding from the lower end of the lifting body, and a diaphragm for raising and lowering the lifting body, so that the end of the sharply formed needle rod enters the wastewater passage of the nozzle tip and is fixed to the passage. A method that allows foreign substances to be removed, that is, a mechanical method of piercing a blocked passage using a skewer such as a needle rod, is applied.

However, Patent Document 2 removes foreign substances by the force of a needle rod provided in an elevator that moves by vertical air pressure, and reverses the flow of wastewater to remove foreign substances, so the method of using these rods with sharp ends is Since wastewater is corrosive and contains a large amount of various foreign substances such as various fats, the parts (moving parts) that move in the water in such an environment frequently break down and the work environment for repairs in the event of a breakdown is poor, so it is difficult to repair such as accidents. There are management drawbacks.

In addition, when the wastewater is ejected by general foreign matter, the nozzle clogging can be easily eliminated by the needle rod method by the elevator, which is the prior art of Patent Document 2, but there is a large amount of wastewater generated from livestock (for example, pigs, cattle, etc.) with high organic matter concentration. Animal manure wastewater is not well filtered through the filter due to the characteristics of long and long livestock hair, and it is the main cause of nozzle clogging. Unlike ordinary foreign matters such as sludge, such thin and long livestock hair can be clogged in an inverted U shape across two adjacent nozzle holes, so it is difficult to clean with a needle rod method. there is a problem.

[Patent Document 1] Korean Patent Registration No. 10-1108279 [Patent Document 2] Korean Patent Registration No. 10-1767442

An object of the present invention is a method in which a plurality of nozzle plates, air intakes and mixing chambers are formed in the wastewater chamber by having one wastewater chamber and an air intake pipe long, and the air mixed with wastewater is further refined and ejected through a mixing tube, By modularizing the existing individual microbubble diffusers, manufacturing and construction costs can be significantly reduced, and the existing equipment provides a wastewater purification treatment facility equipped with a modular microbubble diffuser that can facilitate automation of the system, which was difficult due to economic issues. Have.

In addition, the present invention is to provide a wastewater purification treatment facility equipped with a modular microbubble diffuser capable of efficiently removing foreign substances through reverse washing of a nozzle using wastewater and/or air supplied to its own module or other modules. .

Another object of the present invention is to provide a wastewater purification treatment facility having a modular microbubble diffuser capable of detecting blockage by foreign substances in a modular diffuser using a pressure difference between modules.

The modular microbubble diffuser system for wastewater purification according to an embodiment of the present invention includes: a wastewater main pipe through which wastewater is supplied; An air main pipe through which compressed air is supplied; A plurality of wastewater distribution pipes branched from the wastewater main pipe while maintaining a predetermined distance; A waste water supply pipe connected to each of the waste water distribution pipes; A plurality of air branch pipes branched and connected while maintaining a predetermined distance from the air main pipe; An air supply pipe connected to each of the air branch pipes and disposed side by side adjacent to the waste water supply pipe; And a diffuser module comprising a plurality of microbubble diffusers connected to the wastewater supply pipe at intervals to eject wastewater supplied through the wastewater supply pipe; Each of the microbubble diffusers is submerged under the surface of the wastewater so as to discharge the wastewater mixed with the air to the nozzle plate provided with the wastewater ejection nozzle and the air inlet, the wastewater-air mixing chamber in which the sprayed wastewater and air are mixed, and the wastewater tank. It is configured to include a mixing tube to be installed; An air connection pipe branching from the air supply pipe and passing through the waste water supply pipe to supply air to the wastewater-air mixing chamber by connecting to the nozzle plate; A foreign matter discharge pipe branched from each of the waste water distribution pipes; And a wastewater shutoff valve, an air shutoff valve, and a foreign matter discharge valve that are operated to selectively open and close each of the wastewater distribution pipe, the air branch pipe, and the foreign substance discharge pipe; When the wastewater ejection nozzle of the nozzle plate is clogged with foreign matter, the wastewater shutoff valve is closed, the foreign matter discharge valve is opened, and the air shutoff valve is opened or opened and shut off repeatedly at regular intervals to be supplied from the air main pipe. The foreign material is discharged through the foreign material discharge valve by flowing back from the nozzle plate, thereby removing the foreign material using the air pressure of the own module.

According to another embodiment of the present invention, a wastewater main pipe to which wastewater is supplied; An air main pipe through which compressed air is supplied; A plurality of wastewater distribution pipes branched from the wastewater main pipe while maintaining a predetermined distance; A waste water supply pipe connected to each of the waste water distribution pipes; A plurality of air branch pipes branched and connected while maintaining a predetermined distance from the air main pipe; An air supply pipe connected to each of the air branch pipes and disposed side by side adjacent to the waste water supply pipe; And diffuser modules composed of a plurality of microbubble diffusers connected in parallel at intervals to the wastewater supply pipe to eject wastewater supplied through the wastewater supply pipe; Each of the microbubble diffusers is submerged under the surface of the wastewater so as to discharge the wastewater mixed with the air to the nozzle plate provided with the wastewater ejection nozzle and the air inlet, the wastewater-air mixing chamber in which the sprayed wastewater and air are mixed, and the wastewater tank. It is configured to include a mixing tube to be installed; An air connection pipe branching from the air supply pipe and passing through the waste water supply pipe and connecting to the nozzle plate to supply air to be injected into the wastewater-air mixing chamber; A foreign matter discharge pipe branched from each of the waste water distribution pipes; An external air inlet pipe branched back from each of the air branch pipes; A connection hose detachably connecting the foreign matter discharge pipe of the diffuser module of one side connected in parallel with the branch pipe of the diffuser module of the other side; A waste water shut-off valve, an air shut-off valve, a foreign matter discharge valve, and an external air shut-off valve that are operated to selectively open and close each of the waste water branch pipe, the air branch pipe, the foreign matter discharge pipe and the branch pipe; When the nozzle plate of one of the diffuser modules is blocked by foreign substances, its wastewater shutoff valve is closed and the foreign matter discharge valve is opened, while the wastewater shutoff valve of the diffuser module, which is normal on the other side, is kept open to shut off external air. After opening the valve and closing the air shutoff valve, the air shutoff valve on the side blocked by foreign substances is opened or opened and shut off repeatedly at regular intervals to flow back air supplied from the air main pipe on the blocked side from the nozzle plate. It is characterized in that the foreign material is removed by using the air suction input of the other module by discharging the foreign material to the mixing tube through the air connection tube of the other normal diffuser module through the connection hose.

According to another embodiment of the present invention, a wastewater main pipe to which wastewater is supplied; An air main pipe through which compressed air is supplied; A plurality of wastewater distribution pipes branched from the wastewater main pipe while maintaining a predetermined distance; A waste water supply pipe connected to each of the waste water distribution pipes; A plurality of air branch pipes branched and connected while maintaining a predetermined distance from the air main pipe; An air supply pipe connected to each of the air branch pipes and disposed side by side adjacent to the waste water supply pipe; And diffuser modules composed of a plurality of microbubble diffusers connected in parallel at intervals to the wastewater supply pipe to eject wastewater supplied through the wastewater supply pipe; Each of the microbubble diffusers is submerged under the surface of the wastewater so as to discharge the wastewater mixed with the air to the nozzle plate provided with the wastewater ejection nozzle and the air inlet, the wastewater-air mixing chamber in which the sprayed wastewater and air are mixed, and the wastewater tank. It is configured to include a mixing tube to be installed; An air connection pipe branching from the air supply pipe and passing through the waste water supply pipe to supply air to the wastewater-air mixing chamber by connecting to the nozzle plate; A foreign matter discharge pipe branched from each of the waste water distribution pipes; An external air inlet pipe branched back from each of the air branch pipes; A connection hose detachably connecting the external air inlet pipe of one diffuser module connected in parallel with the foreign matter discharge pipe of the other diffuser module; A waste water shut-off valve, an air shut-off valve, a foreign matter discharge valve, and an external air shut-off valve that are operated to selectively open and close each of the waste water distribution pipe, the air branch pipe, the foreign matter discharge pipe and the external air inlet pipe; When the nozzle plate of one of the diffuser modules is blocked by foreign substances, its wastewater shutoff valve and air shutoff valve are closed, the foreign matter discharge valve and the external air shutoff valve are opened, while the wastewater shutoff valve of the diffuser module, which is normal on the other side, is closed. The air shut-off valve closes the external air shut-off valve while maintaining the open state, and its foreign matter release valve repeats opening or opening and shutting off at regular intervals, and the wastewater supplied from the wastewater main pipe on the normal side is transmitted through the connection hose. It is characterized in that the foreign matter is removed by using the wastewater pressure of the other module by discharging the foreign matter through the open foreign matter discharging pipe on the clogged side by dropping the foreign matter by flowing back from the nozzle plate through the air connection pipe on the clogged side. do.

According to a preferred embodiment of the present invention, between the air supply pipes of the plurality of diffuser modules installed adjacent to each other in parallel is connected to a nozzle clogging detection monitoring display device capable of detecting a pressure difference on both sides.

In addition, it is preferable that the monitoring display device for detecting a nozzle clogging includes a U-shaped tube body and a ball that moves in position according to the occurrence of a pressure difference between both sides within the U-shaped tube body.

In addition, the U-shaped tube is preferably formed of a transparent or semi-transparent material that can visually recognize the ball inside.

In addition, it is preferable that a position change detection means capable of detecting when the ball is moved in an elevated position is provided on both sides of the U-shaped tube body.

In addition, the ball is formed of a plastic material or a plastic material containing a magnetic material, and the position change detection means is a magnetic sensing switch that can detect when the ball of the magnetic material is injured and approached, or a light when the plastic is raised. It is preferable to be formed of an optical sensor capable of detecting it by irradiation.

In addition, it is preferable that the magnetic sensing switch or the optical sensor is mounted in a structure that can move up and down, respectively.

In addition, when the magnetic detection switch or optical sensor detects the rise of the ball, it is preferable that the detection signal is transmitted to the control unit, and the control unit selectively opens and closes each valve to automatically perform the cleaning operation of foreign substances. Do.

The modular microbubble diffuser according to the present invention has a plurality of nozzle tips arranged in a circular shape in order to eject wastewater in a single pipe so that the ejected wastewater is collected in the mixing chamber, and also provides an inclined wastewater passage. Since it has a suction structure in which air is introduced through a gap formed around each of the nozzle tips by bringing a plurality of inlets close to the plurality of nozzle tips, the amount of air intake is increased and as the contact area between the wastewater and the air increases, the wastewater and air The mixing efficiency of can be improved.

Existing microbubble diffuser cleaning devices require a lot of installation cost because the cleaning device is installed inside the wastewater chamber of each microbubble diffuser. Due to the characteristic of high viscosity and corrosive wastewater, moving parts in particular frequently fail and fail. When it occurs, there is a disadvantage in that it is difficult to maintain and maintain the device located in the wastewater.

In the present invention, each microbubble diffuser is provided in one tube to significantly reduce the manufacturing cost, and the cleaning device installed inside the microbubble diffuser as an existing moving part is manually and externally installed by a valve without moving function. By using a cleaning device with a simple structure that can automatically clean, manufacturing and operation costs can be reduced.

In addition, the apparatus for cleaning (removing) foreign matter caused by clogging of the nozzle of the present invention can be simplified by modularizing a plurality of cleaning devices installed in each of the existing bodies, and in terms of installation cost, wastewater that must be installed for each existing microbubble diffuser is introduced. It is possible to significantly reduce the cost of various parts according to the installation and installation of valves, air inflow and intake valves, and is particularly suitable for automation, and has advantages in durability and ease of use.

1 is a view showing a wastewater purification treatment facility according to the present invention in which four sets of microbubble diffusers for wastewater purification according to the present invention are modularized into one system.
2 is a side view of a microbubble diffuser module for purifying wastewater in a horizontal direction.
3 is a side cross-sectional view of a microbubble diffuser for purifying wastewater in a vertical direction.
4 is a schematic cross-sectional view showing only the main portions of the modularized microbubble diffuser according to the present invention.
5(a) and (b) are perspective and front cross-sectional views, respectively, showing the structure of a nozzle plate.
6(a) is a view showing a state in which the modularized microbubble diffusers according to the present invention are installed in parallel.
6(b) is a view showing a state in which a conventional micro bubble diffuser is installed in parallel for comparison with FIG. 5(a).
7 is a cross-sectional view showing a part of the modularized microbubble diffuser according to the present invention.
8 is a view showing a state in which diffuser modules are connected using the monitoring display device for detecting a nozzle clogging according to the present invention.
9 is a control block diagram of the present invention.
Figure 10 (a) (b) (c) is a diagram showing a manual or automatic foreign matter cleaning process using the self-module pneumatic pressure according to the present invention, (a) is a normal operation state diagram. (b) is a diagram showing a state in which the nozzle plate is clogged with foreign substances during operation, and (c) is a diagram showing an operation state of a valve, etc. in a cleaning mode by air pressure.
Figure 11 (a) (b) is a view showing a foreign material cleaning process using the air suction force of the other module according to the present invention, (a) is a view showing a state in which the foreign material is clogged in the nozzle plate of one diffuser module during operation, (b) is a diagram showing a cleaning process using the air suction power of the other module.
Figure 12 (a) (B) is a view showing a foreign material cleaning process using the wastewater pressure of another module according to the present invention, (a) is a view showing a state in which the foreign material is clogged in the nozzle plate of one diffuser module during operation, (b) is a diagram showing the process of removing foreign substances by using the air suction power of the other module.
13 is a view showing a direction of ejection of wastewater from a nozzle plate during a normal operation and a reverse ejection of wastewater and/or air in a cleaning mode.

Hereinafter, with reference to the accompanying drawings, a wastewater purification treatment facility equipped with a modular microbubble diffuser according to an embodiment of the present invention will be described in detail.

The embodiments of the present invention are provided to more completely describe the present invention to those of ordinary skill in the art, and the following examples may be modified in various other forms, and the scope of the present invention is as follows. It is not limited to the examples. Rather, these embodiments are provided to make the present disclosure more faithful and complete, and to fully convey the spirit of the present invention to those skilled in the art.

In addition, in the following drawings, the thickness or size of each layer is exaggerated for convenience and clarity of description, and the same reference numerals refer to the same elements in the drawings. As used herein, the term “and/or” includes any and all combinations of one or more of the corresponding listed items.

The terms used in this specification are used to describe specific embodiments, and are not intended to limit the present invention. As used herein, the singular form may include the plural form unless the context clearly indicates another case. In addition, when used herein, "comprise" and/or "comprising" refers to the presence of the mentioned shapes, numbers, steps, actions, members, elements, and/or groups thereof. And does not exclude the presence or addition of one or more other shapes, numbers, actions, members, elements and/or groups.

In addition, if it is necessary to classify it according to the difference of the installed location as the configuration of the same function, it is determined by adding English subscripts such as a, b, c... to the same number code.

As shown in FIGS. 1 to 7, the microbubble diffuser 10 (hereinafter simply referred to as'diffuser') constituting the unit of the wastewater treatment facility according to the embodiment of the present invention has an internal space having a predetermined length. A nozzle plate 16 having a wastewater supply pipe 12, which is a passage through which wastewater is supplied and transported along, and a plurality of wastewater jet nozzles 14 communicating with the wastewater supply pipe 12 at the lower portion of the body of the wastewater supply pipe 12 , A wastewater air mixing chamber 18 connected to the nozzle plate 16 and a mixing pipe 20 connected to the wastewater air mixing chamber 18 and connected to the wastewater air mixing chamber 18 with an open end thereof, and the wastewater supply pipe It has a structure that is connected through an air connector 24 to the air supply pipe 22 arranged parallel to the top of (12).

The diffuser 10 is a plurality of (microbubble) diffuser modules 26 (or modularized (micro Bubble) diffuser) (therefore, it is possible to construct and replace a module unit forming one set), and such a diffuser module 26 has its wastewater supply pipe 12 interposed with the wastewater pipe 28 to prevent wastewater. It is connected in communication with the main pipe 30, and the air supply pipe 22 is connected to the air main pipe 34 through an air branch pipe 32. And the diffuser module 26 is repeatedly connected to the plurality of (26a, 26b, 26c...26n: representative symbol 26) to the wastewater main pipe 30 and the air main pipe 34 in parallel to treat the entire wastewater purification We are forming facilities.

5 (a) and (b) are perspective and front cross-sectional views showing nozzle plates that inhale and refine air with vacuum pressure generated by ejecting wastewater through a plurality of nozzles, respectively, in a vertical direction to the air supply pipe 22 The open end (lower end) of the branch-connected air connector 24 is connected to a central hole (air inlet 38) formed by vertically penetrating the central portion of the nozzle plate 16 forming a wastewater ejection nozzle, and the The wastewater jet nozzle 14 is fitted by being fitted into a plurality of mounting holes radially arranged to surround the outer periphery of the central hole 38, and six mounting holes 40 in the illustrated embodiment.

The wastewater jetting nozzle 14 forming a nozzle hole is formed in a cylindrical body that is narrowly narrow, and its central axis is inclined toward the center toward the bottom, so that the mounting holes 40 are of the wastewater jetting nozzle 14 It is formed to correspond to the airtight mounting, and accordingly, the wastewater jet nozzle 14 is formed in a form in which the diameter of the hole gradually decreases toward the lower end and is collected at the center portion.

As shown in Fig. 1, the waste water distribution pipe 28 is provided with a waste water shut-off valve 42 for blocking the supply of waste water, and a foreign material discharge pipe 44 for discharging foreign substances from the waste water distribution pipe 28 is branched. It is connected, and a foreign material discharge valve 46 for opening and closing the foreign material discharge pipe 44 is provided.

An air shut-off valve 48 for blocking air supply is provided in the air branch pipe 32 connected to supply air supplied from the air main pipe 34 to the supply supply pipe 22, and External air shut-off valves 52 are provided in the external air inlet pipe 50 branched from the engine 32 again.

FIG. 2 shows a wastewater purification treatment apparatus having a horizontal ejection type diffuser module, in which the diffuser 10 of the embodiment of FIG. 1 is disposed vertically to eject wastewater vertically downward, whereas the embodiment of FIG. 2 is disposed horizontally. It is provided with the diffuser (10-1), except that the wastewater is ejected horizontally, except that it is substantially the same as the configuration of the embodiment of Figure 1, so a repeated description will be omitted.

6(a) is a diagram showing a wastewater purification treatment facility in which a modular diffuser is continuously arranged, and FIG. 7 is a cross-sectional structure diagram showing a part of the wastewater purification treatment system. As shown, the modularized diffuser 26 (diffuser module) is adjacent along the wastewater main pipe 30 and the air main pipe 34 and is continuously arranged in parallel at predetermined intervals (2 Although shown in the location, a plurality are installed along the line), this modular diffuser (26:26a, 26b...) is a waste water distribution pipe (28a, 28b...) and air branch pipes (32a, 32b.. .) is formed to be immersed in the wastewater 56 in the wastewater tank 54, or instead of being installed above the wastewater tank 54, the mixing tube so that the opened lower end of the mixing tube 20 is located under the wastewater surface. (20) may be extended and installed.

8 shows a monitoring display device for detecting a nozzle clogging, between the air supply pipes 22a, 22b, 22c... which are spaced apart from each other of the modular diffusers (diffuser modules, 26a, 26b, 26c...) They are connected to each other in communication with the monitoring display device 58.

In order to check whether the nozzle is clogged in the conventional microbubble diffuser, the only method is to shut off the blower air shutoff valve of the microbubble diffuser in operation, connect a flow meter to the inlet of the external air shutoff valve, and open the external air shutoff valve to measure the suction power. Was. However, in order to measure the amount of inhalation at tens to hundreds of locations by this method, there are many difficulties.

In order to solve this problem, if the monitoring display device 58 for detecting a nozzle clogging is connected to the module and the module air supply pipe in succession as shown in FIG. 8, the suction power is low, that is, in the module where the nozzle is clogged (when the nozzle is clogged, wastewater is ejected). As this becomes difficult, the force to draw air out of the air supply pipe by the siphon principle decreases, and the pressure inside the air supply pipe increases accordingly.) The module with less nozzle clogging or no nozzle clogging (when there is no clogging, the wastewater ejection is reduced. It is possible to easily monitor the degree of clogging of the nozzle by using the principle that the circular ball moves according to the pressure difference on both sides toward (the pressure inside the air supply pipe is lowered because the air is strongly sucked and injected in conjunction with this).

To this end, the monitoring display device 58 uses the coupling holes 62 shown in the detailed view of Fig. 7 to connect both ends of the U-shaped tube body 60 in the form of a hollow pipe, and adjacent air supply pipes 22a, 22b, 22c...) are connected so as to communicate with each other, and a ball 64 having a diameter approximately corresponding to the inner diameter of the U-shaped tube 60 is accommodated in the U-shaped tube body 60, and this ball 64 Depending on the pressure difference acting on the air supply pipes (22a, 22b), (22b, 22c) on both sides... have.

The U-shaped tube body 60 is preferably formed of a circular transparent tube that can see the inside from the outside (or a translucent tube that can see inside), that is, a glass tube body or a transparent synthetic resin tube body, and balls ( 64) is formed of a plastic resin or a magnetic object, especially a light plastic magnet containing a magnetic material, and the left and right position change detection that can detect the position change state of the ball 64 on both sides of the U-shaped tube 60 at a predetermined height. Means (66) (66), for example, a magnetic detection switch that can detect when a magnetic ball (64) is injured and approached, or by irradiating light when the plastic ball (64) rises to detect it. Optical sensors that can be used are installed.

In addition, the magnetic sensing switch or the optical sensor is mounted through a structure in which the U-shaped tube body 60 can move up and down, for example, a ring-shaped elastic gripping member that can be moved up and down along the tube body, and if necessary, the sensor It is desirable to be able to adjust the height of the.

As such, the monitoring display device 58 for detecting a nozzle clogging is a structure in which a spherical ball 64 is provided in a U-shaped tube body 60, for example, a circular transparent tube, and the nozzle plate of the modular diffuser 26a on one side When the wastewater ejection nozzle 14 of (16) is blocked by foreign substances in the wastewater, for example, pig hair, the air intake pressure decreases, resulting in a pressure difference between the modular diffuser 26b in a normal state connected adjacent to it. Accordingly, the spherical ball 64 is a structure that moves in a low pressure direction.

Accordingly, when the ball 64 is sensed by the left or right position change detection means 66, the detection signal is transmitted to the control unit 68 so that the control unit 68 provides various valves 42,46,48,52. ..) are selectively opened and closed (refer to the control block shown in FIG. 8).

In the wastewater treatment facility (monitoring display device is omitted) of Fig. 6(a), the foreign matter discharge pipe 44a provided in the modular diffuser (diffuser module, 26a) on the left and the modular diffuser 26b on the right are provided. The external air inlet pipe 50b and the external air inlet pipe 50a provided in the modular diffuser 26a on the left and the foreign matter discharge pipe 44b provided in the modular diffuser 26b on the right are each easily detachable. The connection hoses 70 and 72 (indicated in a line shape) are configured to be selectively connected at all times or whenever necessary for cleaning.

Hereinafter, the cleaning function and operation of the wastewater treatment facility of the present invention will be described.

When the wastewater treatment facility starts to operate, wastewater is supplied from a wastewater tank (not shown) in which wastewater such as livestock manure is stored through the wastewater main pipe 30.

At the same time, a compressed air pump (not shown) is operated to supply compressed air through the main air pipe 34.

The wastewater supplied through the wastewater main pipe 30 is supplied to the wastewater supply pipes 12:12a, 12b, 12c... through the wastewater branch pipes (28:28a, 28b, 28c...) branched on the way. At the same time, the air supplied through the main air pipe 34 is supplied to the branch-connected air branch pipes 32:32a, 32b, 32c...), and the wastewater supply pipes 12:12a, 12b, 12c. ..) the wastewater supplied to each nozzle plate 16 reaches each nozzle plate 16 through a plurality of wastewater ejection nozzles 14 of the nozzle plate 16 in a vertical direction or a horizontal direction (when the nozzle direction is arranged horizontally). The wastewater injected through the wastewater ejection nozzle 14 which is sprayed and gradually narrows is diffused in the wastewater-air mixing chamber 18.

At the same time, the air supplied to the air branch pipes (32:32a, 32b, 32c...) is supplied to the nozzle plate (16) through the air connection pipes (24a, 24b...) by the suction pressure and the self-supply pressure when the wastewater is ejected. ) Is supplied to the central hole 38 and ejected into the wastewater air mixing chamber 18, the wastewater and air are stirred together, and then injected into the wastewater tank 54 through the mixing pipe 20.

Through this process, wastewater and air are stirred and collided to generate microbubbles in the wastewater tank 54 to treat wastewater.

However, the wastewater of livestock contains a large amount of foreign substances such as pig hair, so if the wastewater ejection nozzles 14 of the nozzle plate 16 are blocked by these foreign substances 74, it interferes with the spraying of the wastewater. 16) cleaning work will be performed.

At this time, as shown in FIG. 8, if the ball 64 is raised along the right tube of the U-shaped tube body 60 in the nozzle clogging detection monitoring display device 58, in this state, the diffuser module on the left side with reference to FIG. 8 It is determined that the nozzle plate 16 of (26a) is clogged.

At this time, the operator manually or automatically adjusts the opening and closing of various valves to perform cleaning of the clogged nozzle plate.Three different cleaning operations are possible according to the valve opening and closing operation, and as shown in FIG. The foreign matter 74 can be removed by using the pneumatic pressure of.

(Example 1) Remove foreign substances by using air pressure in its own module

When it is recognized that nozzle clogging has occurred by the nozzle clogging detection monitoring display device of FIG. 8, the operator manually or automatically performs the cleaning work flow of the corresponding module.

Fig. 10(a) is a diagram showing a normal operation state, and the diffuser module 26a on one side is also shown as "Module A".

In the normal operation state, "Module A", which refers to the diffuser module 26a, is in an open state as shown in (a), and the valves 52a and 46a are in a closed state, and wastewater and air are each dotted line. Flow movement is taking place along the arrow of, and the air and wastewater injected into the air-wastewater mixing chamber are stirred and mixed in the mixing pipe 20a and then sprayed and discharged to the lower part of the wastewater tank.

10(b) shows a case where a plurality of nozzles 14 located on the nozzle plate 16a of the diffuser module 26a are blocked by a foreign substance 74. At this time, the valves in the case of cleaning using the air pressure of the own module The opening and closing operation is as follows (see Fig. 10(c)).

1) Close the wastewater shut-off valve (42a)

2) Open the foreign material discharge valve (46a)

3) Open the air shutoff valve (48a) or repeat close/open at regular intervals

In such a valve opening and closing state, the supply of wastewater is cut off (valve 42a is shut off), and only air is injected to the mixing pipe 20a through the valve 48a in the open state. As it is immersed under the water surface of the water tank 54, the air injected into the mixing pipe 20a through the external air inlet pipe and the air connection pipe 24a is blocked by the waste water surface, and the nozzle is U-turned as shown in (c). The nozzle holes of the plate 16a flow backward and are discharged to the outside from the foreign material discharge pipe 44a through the opened valve 46a, and this process, that is, the foreign material 74 blocking the nozzle hole through the reverse movement of air It is removed from the plate 16a and discharged to the outside through the foreign matter discharge pipe 44a that is opened with air and falls into the wastewater tank 54.

When the foreign matter 74 is removed as described above, the pressure difference between both ends of the monitoring display device 58 for detecting clogging of the nozzle is resolved and the ball descends to reach the inflection point at the lower end of the U-shaped tube body, which is a neutral position. The operator confirms that the removal of the foreign matter 74 has been completed, and returns the valves to the state shown in FIG. 10(a), and this operation detects the position of the ball 64 as a sensor 66 and the control unit 68 ) Can automatically open and close the valves.

In this way, air is ejected from the outlet of the wastewater jet nozzle in the reverse direction to the inlet by the air pressure having a certain pressure, and foreign matter is discharged through the foreign matter removal valve located in the wastewater distribution pipe.At this time, the air shutoff valve 48a is turned on at a constant cycle. In the case of /off (that is, repeating the valve closing and opening), an impact pulse is applied to the nozzle plate to further increase the cleaning efficiency of dropping foreign substances.

Next, a process of removing foreign substances using the air suction power of other adjacent modules will be described with reference to FIG. 11.

(Example 2) Removal of foreign substances using the air suction power of other adjacent modules

In the diffuser module "A" 26a in which the nozzle clogging has occurred (see foreign matter 74 in Fig. 11(a)), the outlet of the foreign matter discharge pipe 44a in which the foreign matter removal valve 46a is installed, the module "A" and A hose 76 that allows the outlet of the external air shut-off valve 52b located in the external air inlet pipe 50b of the other module "B" 26b in normal operation without clogging of the foreign matter 74 adjacent to it (Fig. 11(b), the connection status is indicated by a dotted line), and cleaning is performed as follows.

1) Close the wastewater shut-off valve (42a) of module "A"

2) Close air shutoff valve (48b) of module "B"

3) Open external air shutoff valve (52b) of module "B"

4) Foreign matter discharge valve (46a) of module "A" repeats close/open for a certain period of time at a certain period and then open

5) Repetition of closing/opening the air shutoff valve (48a) of module "A" at regular intervals while the foreign matter discharge valve (46a) of module "A" is open

In the above valve opening and closing state, the supply of wastewater to the module A (26a) is cut off (valve 42a is shut off), and only air is injected into the mixing pipe 20a through the valve 48a in the temporarily open state. The lower end of the pipe (20a) is immersed in the wastewater tank (54) (the lower body of all mixing pipes is locked to the deep bottom in the wastewater tank), the mixing pipe through the external air inlet pipe and the air connection pipe (24a). The air injected to (20a) is blocked by the wastewater surface, and is opened by making a U-turn between the top and bottom of the nozzle plate 16a as shown in the left side of Fig. 11(b) to counterflow the nozzle holes of the nozzle plate 16a. It is conveyed to the foreign matter discharge pipe 44a side through the valve 46a (this is to be conveyed by the suction force acting on the module "B" side to be described later), and there is a difference from the previous embodiment from this part.

Under this condition of module "A" (26a), the valve (42b) is still open in module B (26b) adjacent thereto, so that wastewater is ejected into the mixing pipe (20b) through the nozzle plate (16b), At this time, the valve 52b is opened and the valve 48b is closed.

Accordingly, the suction negative pressure is generated in the air connector 24b according to the Venturi effect due to the discharge of wastewater from the module B (26b), and the suction negative pressure is the waste water of the module A (26a) through the connected hose (70). Acting on the engine 28a side, air supplied to the module A 26a is sucked into the module B 26b and injected into the mixing tube 20b. That is, the air blown from the module A (26a) to the mixing pipe moves in the reverse direction by the suction force acting on the module B (26b) side, and the foreign matter 74 that was blocking the nozzle hole of the nozzle plate (16a) becomes the nozzle plate ( With air removed from 16a), it is introduced into the adjacent module B (26b) through the open foreign matter discharge pipe (44a), the connection hose (76) and the external air inlet pipe (50b), and is mixed through the air connection pipe (24b). It is injected and discharged through the pipe (20b) to fall into the wastewater tank (54).

Here, when the valve 48a and/or the valve 46a are repeatedly turned on/off at a certain period as described above, air is applied in the on period, and the water (wastewater) in the lower part of the mixing chamber flows backward in the off period, and an impact pulse is applied. It is possible to increase the cleaning efficiency of removing foreign substances caught in the nozzle hole of the nozzle plate.

Next, a process of removing and cleaning foreign substances clogged by the nozzle plate using the wastewater pressure of another diffuser module will be described with reference to FIGS. 12(a)(b).

In this embodiment, the use of the wastewater pressure of other adjacent modules is for convenience, and the cleaning may be performed using water or air pressure having a predetermined pressure other than the wastewater pressure of the adjacent module.

(Example 3) Removal of foreign substances using the pressure of wastewater from other adjacent modules

The outlet pipe (external air inlet pipe) 50a of the external air shut-off valve 46a located in the wastewater branch pipe of the diffuser module "A" 26a where the nozzle clogging occurred (see foreign matter 74 in Fig. 12(a)) Wow, in the state of being connected to each other with a detachable hose 72 (connection state is indicated by a dotted line in Fig. 12(b)) between the foreign matter discharge pipe 44b of the module “A” and the adjacent module “B” 26b Carry out cleaning work.

Fig. 12(a) shows a case in which a foreign material 74 clogs the nozzle hole of the nozzle plate 16a during normal wastewater treatment operation (operation in a state where the valves 42a and 48a of the module A are open and the valves 46a and 52a are closed). In this case, the foreign matter removal and cleaning operation using the wastewater pressure of another module adjacent to it is performed as follows.

1) Close the wastewater shut-off valve (42a) of module "A"

2) Close the air shutoff valve (48a) of module "A"

3) Open external air shutoff valve (52a) of module "A"

4) Open the foreign substance removal valve (46a) of module "A"

5) Opening the foreign substance removal valve (46b) of the module "B" or repeating open/closed at regular intervals

In the above valve opening/closing state (refer to FIG. 12(b)), the supply of wastewater to the module A 26a is shut off by the valve 42a, and the air supply is cut off by the valve 48a, so that not all of the air wastewater is supplied to the module A.

On the other hand, valves 46a and 52a of module A 26a are open, and valves 42b and 48b of adjacent module B 26b are opened, and while wastewater and air are normally supplied, valve 52b is in a closed state, and valve 46b is Opening or, preferably, opening and closing is repeated at regular intervals.

When this happens, the mixing pipes 20a and 20b are immersed under the wastewater surface and are under pressure, while the wastewater supplied to the module B 26b passes through the open valve 46b to the connecting hose 78 (see dotted line). It flows through and flows into the module A (26a) through the opened valve (52a).

Originally, in the air branch pipe 32a, the air supply pipe or valve 48a is closed, so that the air supply is blocked, and the wastewater introduced from the module B 26b side flows instead.

This wastewater passes through the center hole of the nozzle plate 16a through the air connection pipe 24a and is ejected into the air-wastewater mixing chamber, and then U-turns to pass through the nozzle holes upward (the mixing pipe is in the wastewater. In the closed state, the valve 46a is opened and exposed to atmospheric pressure, causing the flow of wastewater to the valve 46a side due to the pressure difference between the air-wastewater mixing chamber). At this time, the foreign matter 74 blocking these nozzle holes from the upper side is dropped by the wastewater pressure of U-turn, and is ejected and dropped into the atmosphere through the valve 46a opened together with the wastewater, so that the removed foreign matter 74 is removed from the wastewater tank ( 54).

Here, as described above, when the valve 46b of the module B 26b is repeatedly turned on/off at a predetermined period, water (wastewater) flowing back through the nozzle plate applies an impact pulse to the foreign material 74 to increase cleaning efficiency.

13 is a direction of flow of wastewater and air through the nozzle plate during normal operation according to the present invention, and wastewater and air during washing to remove foreign matters (74, inverted U-shape shown across two nozzle holes is, for example, pig hair) It shows the flow direction, and is a view showing the removal of foreign matter 74 as air and wastewater are transported in the longitudinal direction.

6 (a) and (b) are diagrams showing differences in structure and component configurations between the modular wastewater treatment facility of the present invention and the conventional facility, respectively.

6(a) shows that the diffuser module is installed in a state that is submerged in the wastewater treatment tank 54, but instead of installing the diffuser module so that it is exposed above the wastewater treatment tank 54, the mixing tube is extended so that the lower end of the mixing tube is It can be installed in a submerged form in the wastewater treatment tank 54, and as such, the upper or lower installation is installed at an appropriate location in consideration of the structural conditions of the installation site.

The economical efficiency of the modular microbubble diffuser (one set of four) of the present invention is compared with the conventional microbubble diffuser (refer to the configurations of Fig. 6 (a) and (b)). In addition to the simple parts cost, the additional processing cost in addition to the material cost of the individual body, and the cost of joining, welding, and piping each part are added, and it has an economical efficiency of 50-70% or more.

Comparison of the amount of materials required for upper installation Waste water shut-off valve Foreign matter discharge valve Air shut-off valve External air shutoff valve Coupler Waste water chamber body Existing facility 8(40A) 0 8(25A) 8(25A) 8(40A) 8 The present invention 2(65A) 2(40A) 2(40A) 2(40A) 2(65A) 2

Comparison of the amount of material required for lower installation construction Waste water shut-off valve Foreign matter
Discharge valve Air shut-off valve External air
Shut-off valve Coupler Wastewater
Supply pipe air
Supply pipe Waste water chamber body Existing facility 8(40A) 0 8(25A) 8(25A) 8(40A) 8(40A) 8(25A) 8 The present invention 2(65A) 2(40A) 2(40A) 2(40A) 2(65A) 2(65A) 2(40A) 2

Although specific embodiments of the present invention have been shown and described above, the technical idea of the present invention is not limited to the accompanying drawings and the above description, and various modifications are possible within the scope not departing from the spirit of the present invention. As will be apparent to those of ordinary skill in the field, this type of modification will be considered to be within the scope of the claims of the present invention within the scope not contrary to the spirit of the present invention.

10,10-1: microbubble diffuser 12: wastewater supply pipe
14: waste water jet nozzle 16: nozzle plate
18: wastewater-air mixing chamber 20: mixing pipe
22: air supply pipe 24: air connector
26: diffuser module (modular diffuser) 28: waste water pipe
30: wastewater main pipe 32: air discharge pipe
34: main air pipe 38: central hole (air inlet)
40: mounting hole of the nozzle 42: wastewater shut-off valve
44: foreign matter discharge pipe 46: foreign matter discharge valve
48: air shutoff valve 50: external air inlet pipe (branch pipe)
52: external air shutoff valve 54: wastewater tank
56: wastewater
58: nozzle clogging detection monitoring display device 60: U-shaped tube
62: coupling 64: ball
66: position change detection means (left, right) 68: control unit
70,72: connection hose 74: foreign matter

Claims (10)

A wastewater main pipe through which wastewater is supplied;
An air main pipe through which compressed air is supplied;
A plurality of wastewater distribution pipes branched from the wastewater main pipe while maintaining a predetermined distance;
A waste water supply pipe connected to each of the waste water distribution pipes;
A plurality of air branch pipes branched and connected while maintaining a predetermined distance from the air main pipe;
An air supply pipe connected to each of the air branch pipes and disposed side by side adjacent to the waste water supply pipe;
And a diffuser module comprising a plurality of microbubble diffusers connected to the wastewater supply pipe at intervals to eject wastewater supplied through the wastewater supply pipe.
Each of the microbubble diffusers is submerged under the surface of the wastewater so as to discharge the wastewater mixed with the air to the nozzle plate provided with the wastewater ejection nozzle and the air inlet, the wastewater-air mixing chamber and wastewater tank in which the sprayed wastewater and air are mixed. It is configured to include a mixing tube to be installed;
An air connection pipe branching from the air supply pipe and passing through the waste water supply pipe to supply air to the wastewater-air mixing chamber by connecting to the nozzle plate;
A foreign matter discharge pipe branched from each of the waste water distribution pipes;
A wastewater shutoff valve, an air shutoff valve, and a foreign matter discharge valve that are operated to selectively open and close each of the wastewater distribution pipe, the external air inlet pipe, and the foreign substance discharge pipe;
When the wastewater ejection nozzle of the nozzle plate is clogged with foreign matter, the wastewater shutoff valve is closed, the foreign matter discharge valve is opened, and the air shutoff valve is opened or opened and shut off repeatedly at regular intervals to be supplied from the air main pipe. By flowing back from the nozzle plate and discharging the foreign material through the foreign material discharge valve, thereby removing the foreign material using the air pressure of the own module,
The air supply pipes of the plurality of diffuser modules installed in parallel are connected to a nozzle clogging detection monitoring display device capable of detecting a pressure difference on both sides,
The monitoring display device for detecting clogging of the nozzle comprises a U-shaped tube and a ball that moves in position according to the occurrence of a pressure difference on both sides within the U-shaped tube. ." A wastewater main pipe through which wastewater is supplied;
An air main pipe through which compressed air is supplied;
A plurality of wastewater distribution pipes branched from the wastewater main pipe while maintaining a predetermined distance;
A waste water supply pipe connected to each of the waste water distribution pipes;
A plurality of air branch pipes branched and connected while maintaining a predetermined distance from the air main pipe;
An air supply pipe connected to each of the air branch pipes and disposed side by side adjacent to the waste water supply pipe;
And a diffuser module comprising a plurality of microbubble diffusers connected in parallel at intervals to the wastewater supply pipe to eject wastewater supplied through the wastewater supply pipe.
Each of the microbubble diffusers is submerged under the surface of the wastewater so as to discharge the wastewater mixed with the air to the nozzle plate provided with the wastewater ejection nozzle and the air inlet, the wastewater-air mixing chamber and wastewater tank in which the sprayed wastewater and air are mixed. It is configured to include a mixing tube to be installed;
An air connection pipe branching from the air supply pipe and passing through the waste water supply pipe to supply air to the wastewater-air mixing chamber by connecting to the nozzle plate;
A foreign matter discharge pipe branched from each of the waste water distribution pipes;
A branch pipe branched back from each of the air branch pipes;
A connection hose detachably connecting the foreign matter discharge pipe of the diffuser module on the other side and the external air inlet pipe of the diffuser module on the other side to be connected in parallel;
A waste water shut-off valve, an air shut-off valve, a foreign matter discharge valve, and an external air shut-off valve that are operated to selectively open and close each of the waste water branch pipe, the air branch pipe, the foreign matter discharge pipe and the branch pipe;
When the nozzle plate of one of the diffuser modules is blocked by foreign substances, its wastewater shutoff valve is closed and the foreign matter discharge valve is opened, while the wastewater shutoff valve of the diffuser module, which is normal on the other side, is kept open to shut off external air. After opening the valve and closing the air shutoff valve, the air shutoff valve on the side blocked by foreign substances is opened or opened and shut off repeatedly at regular intervals to flow back air supplied from the air main pipe on the blocked side from the nozzle plate. A modular microbubble diffuser, characterized in that the foreign matter is removed using the air suction input of the other module by discharging it to the mixing tube through the air connector of the other normal diffuser module through the connection hose. Wastewater purification treatment facility equipped with a. A wastewater main pipe through which wastewater is supplied;
An air main pipe through which compressed air is supplied;
A plurality of wastewater distribution pipes branched from the wastewater main pipe while maintaining a predetermined distance;
A waste water supply pipe connected to each of the waste water distribution pipes;
A plurality of air branch pipes branched and connected while maintaining a predetermined distance from the air main pipe;
An air supply pipe connected to each of the air branch pipes and disposed side by side adjacent to the waste water supply pipe;
And a diffuser module comprising a plurality of microbubble diffusers connected in parallel at intervals to the wastewater supply pipe to eject wastewater supplied through the wastewater supply pipe.
Each of the microbubble diffusers is submerged under the surface of the wastewater so as to discharge the wastewater mixed with the air to the nozzle plate provided with the wastewater ejection nozzle and the air inlet, the wastewater-air mixing chamber and wastewater tank in which the sprayed wastewater and air are mixed. It is configured to include a mixing tube to be installed;
An air connection pipe branching from the air supply pipe and passing through the waste water supply pipe to supply air to the wastewater-air mixing chamber by connecting to the nozzle plate;
A foreign matter discharge pipe branched from each of the waste water distribution pipes;
An external air inlet pipe branched back from each of the air branch pipes;
A connection hose detachably connecting the external air inlet pipe of one diffuser module connected in parallel with the foreign matter discharge pipe of the other diffuser module;
A waste water shut-off valve, an air shut-off valve, a foreign matter discharge valve, and an external air shut-off valve that are operated to selectively open and close each of the waste water distribution pipe, the air branch pipe, the foreign matter discharge pipe and the external air inlet pipe;
When the nozzle plate of one diffuser module is clogged with foreign matter, its wastewater shutoff valve and air shutoff valve are closed, the foreign matter discharge valve and the external air shutoff valve are opened, while the other side of the normal diffuser module wastewater shutoff valve and The air shut-off valve closes the external air shut-off valve while maintaining the open state, and its foreign matter release valve repeats opening or opening and shutting off at regular intervals, and the wastewater supplied from the wastewater main pipe on the normal side is transmitted through the connection hose. It is characterized in that the foreign matter is removed by using the wastewater pressure of the other module by discharging the foreign matter through the open foreign matter discharging pipe on the clogged side by dropping the foreign matter by flowing back from the nozzle plate through the air connection pipe on the clogged side. Wastewater purification treatment facility equipped with a modular microbubble diffuser. delete delete The method of claim 1,
The U-shaped tube body is a wastewater purification treatment facility with a modular microbubble diffuser, characterized in that formed of a transparent or semi-transparent material that can visually recognize the inner ball. The method of claim 6,
A wastewater purification treatment facility having a modular microbubble diffuser, characterized in that a position change detection means capable of detecting when the ball is moved in an elevated position is provided on both sides of the U-shaped tube body. The method of claim 7,
The ball is formed of a plastic material or a plastic material containing a magnetic material, and the position change detection means is a magnetic detection switch capable of detecting when the ball of the magnetic material is injured and approached, or irradiates light when the plastic is raised. A wastewater purification treatment facility having a modular microbubble diffuser, characterized in that it is formed of an optical sensor capable of detecting this. The method of claim 8,
A wastewater purification treatment facility having a modular microbubble diffuser, characterized in that the magnetic sensing switch or the optical sensor is mounted in a structure that can move up and down, respectively. The method of claim 9,
When the magnetic detection switch or optical sensor detects the rise of the ball, the detection signal is transmitted to the control unit, and the control unit selectively opens and closes each valve to automatically perform a cleaning operation of foreign substances. Wastewater purification treatment facility equipped with a modular microbubble diffuser.

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