KR100665664B1 - The sewage disposal facility of stable - Google Patents

Abstract

A wastewater disposal apparatus for a cattle shed is provided to purify the wastewater with an aeration type by means of a communication body and minute bubbles. The waste water of the cattle shed is supplied into the inside of a solid-liquid separation cistern(10). The first minute bubble generating apparatus(12) is installed at the lower portion of the separation cistern and connected with a blower(60). A side of a waste water pipe(13) is installed at the lower portion of the separation cistern. The blower is connected to the outside and connected with the first minute bubble generating apparatus via the first connection pipe. The air from the blower is supplied to the first minute bubble generating apparatus via the first connection pipe.

Description

Barn Wastewater Purification Facility {THE SEWAGE DISPOSAL FACILITY OF STABLE}

1 is a schematic diagram showing a conventional barn wastewater purification facility.

Figure 2 is a schematic cross-sectional view showing a barn wastewater purification plant of the present invention.

Figure 3 is a schematic cross-sectional view showing that the auxiliary aeration tank is added to the barn wastewater purification facility of the present invention.

Figure 4 is a schematic cross-sectional view showing that the fermentation tank is added to the barn wastewater purification facility of the present invention.

5 is a cross-sectional view showing an example of a communication medium used in the barn wastewater purification facility of the present invention.

Figure 6 is a schematic diagram showing an example of the micro-bubble generating device of the barn wastewater purification facility of the present invention.

Figure 7 is a schematic cross-sectional view showing a solids removal device of the present barn wastewater purification facility.

<Detailed Description of Major Symbols in Drawing>

10: solid-liquid separation tank 11: wastewater supply pipe

12: first micro-foaming device 12a: the first connector

12b: first control valve 12c: motor

12d: impeller 12e: axis of rotation

12f: injection nozzle 12g: slit bulkhead

13: wastewater discharge pipe 14: solids removal device

14a: electric motor 14b: rotary roller

14c: belt 14d: wings

15 solids outlet 20 sedimentation tank

21: center tube 22: return tube

22a: air supply pipe 22b: supply pipe control valve

23: sedimentation tank outlet 23a: filter

30: aeration tank 31: communication

31a: hole 32: second microscopic bubble generator

32a: 2nd connection pipe 32b: 2nd control valve

33: frame 34: aeration tank outlet

40: ozone injection tank 41: third microbubble generating device

41a: third connector 41b: third control valve

42: ozone generator 43: ozone input tank outlet

50: UV lamp 51: UV lamp

52: purified water outlet 60: blower

70: auxiliary aeration tank 71: auxiliary micro-bubble generating device

71a: auxiliary connector 71b: auxiliary control valve

72: auxiliary aeration tank outlet 80: fermentation tank

90: suspended solids 100: wastewater

110: separator 120: aeration device

The present invention relates to a barn wastewater purification plant.

The wastewater from the barn is usually discharged with a mixture of livestock feces and urine.

However, since most of the wastewater in the barn is solid, wastewater having a high concentration of solid matter such as feces cannot be purified by microorganisms, which is a general wastewater purification method because microorganisms cannot live in the wastewater.

For example, wastewater from pig farms in livestock wastewater is mixed and discharged with feces and urine, with a BOD of 15,000 to 20,000 ppm.

At this time, the wastewater contains a large amount of solid material, so there is almost no oxygen in the wastewater, so it is difficult to purify because ordinary microorganisms cannot live, and even if it is purified, it takes a long time for the solid to be purified.

Therefore, it is preferable to separate the solid material and then to purify the separated wastewater by the catalytic oxidation method by general microorganisms.

However, in the livestock wastewater, especially the wastewater discharged from the pig farm, it is difficult to separate the solid material from the urine because it contains a lot of fine particles of solid matter.

At present, the centrifugal separation method, the filter press method, the pressure flotation method and the like are used as the solid-liquid separation method, but the centrifugal separation method has a drawback in that solid materials below a certain level are not separated at all.

The filter press method has the disadvantage that the apparatus is complicated, the apparatus is expensive, requires a lot of work for operation, and solid particles of a certain size or less are not separated.

Pressurized flotation method also has a problem that the device price is expensive, not easy to operate, it takes a lot of operating costs, noise pollution due to the noise of the blower when contact oxidation after high-liquid separation.

Purifying wastewater by using a microorganism with a technique related to the present invention, a manure purification tank (Korean Patent Publication No. 10-0226213) using a communication medium in which microorganisms can be invented by the applicant of the present invention.

The above facility was to activate the aerobic microorganisms using a communication medium, but there was a problem that the complex structure, such as back-tubing, returning, blowing.

In order to solve some of these problems, 'aerobic treatment method and treatment tank of sewage' (Korean Registered Patent Publication No. 10-0409056), which is intended to purify wastewater using an underwater stirring type aeration device 120 and a separator 110, He was also drafted.

However, the above facilities have a problem in that the purification efficiency is lowered so that the aeration process is performed in one treatment tank.

In addition, the above facilities have a problem that the process of separating the suspended solids in the waste water is not prepared separately or the method of separation is inefficient.

The barn wastewater purification facility of the present invention is intended to solve the above problems, by supplying microbubbles having a diameter of 1 to 50 ㎛ to the suspended solids in the wastewater is to separate the suspended solids in the wastewater and to purify the wastewater. .

In addition, there is also an object to increase the purification efficiency by using aerated air and the medium having a space therein while aeration of the waste water separated from the suspended solids.

In addition, by supplying the microbubble containing ozone to the aeration tank, there is also an object to decompose livestock waste such as bilirubin and environmental hormones.

In addition, there is also an object to provide a waste water purification facility with high purification efficiency by decomposing the remaining ozone using an ultraviolet lamp.

In addition, the blower also has a purpose to reduce noise caused by the blower by using a small capacity air pump.

The present invention relates to a barn wastewater purification plant.

The barn wastewater purification facility of the present invention is to separate the suspended solids contained in the wastewater by using a microbubble generator to purify the wastewater.

In addition, the wastewater from which the suspended solids are separated is purified by using a communication medium and microbubbles.

In addition, it is possible to decompose bilirubin, environmental hormones and the like in the waste water by using microbubbles containing ozone.

In addition, an ultraviolet lamp is used to decompose the remaining ozone.

To this end, the barn wastewater purification facility of the present invention includes: a solid-liquid separation tank in which the wastewater of the barn is supplied to the inside, and a first microparticle bubble generator connected to the blower is installed at a lower portion thereof, and one side of the wastewater discharge pipe is installed at the lower portion thereof; The center tube is installed inside the center, and the other side of the wastewater discharge pipe is connected to the center tube so that the wastewater of the solid-liquid separation tank is introduced into the inside through the center tube. A sedimentation tank connected to the solid-liquid separation tank and connected to an air supply pipe connected to a blower on one side of the return pipe so that the solid precipitated at the lower portion is returned to the solid-liquid separation tank; An aeration tank connected to the sedimentation tank so that the sewage after the sedimentation process is introduced into the interior, and a plurality of communication bodies are filled therein, and a second micro-strength generating device connected to the blower is installed at the bottom; An ozone input tank into which the waste water of the aeration tank flows into the inside, and a third microscopic bubble generator connected to the ozone generator is installed at the lower portion to supply the microbubbles including ozone to the inside; Waste water aerated in the ozone input tank is introduced into the inside, an ultraviolet lamp is installed inside, and an ultraviolet tank formed with a purified water outlet through which the purified water is discharged on one side.

Hereinafter, the technical idea of the present invention will be described in detail with reference to the accompanying drawings.

However, the accompanying drawings are only one example for more specifically describing the technical idea of the present invention, and thus the technical idea of the present invention is not limited to the accompanying drawings.

The solid-liquid separation tank 10, which is a component of the present invention, is provided with a first microscopic bubble generator 12 connected with a blower 60 at the bottom of the wastewater 100 to the inside of the barn, and at the bottom of the wastewater discharge pipe. One side of (13) is provided.

As shown in FIG. 2, the blower 60 is connected to the outside, and the blower 60 and the first microbubble generation device 12 are connected through the first connecting pipe 12a.

That is, the air is supplied from the blower 60 to the first micro-strength generator 12 through the first connecting pipe 12a.

In order to supply the wastewater 100 of the barn to the inside, a separate collection pipe or a collection tank for collecting the wastewater 100 generated from the barn is separately prepared, and then a wastewater supply pipe 11 consisting of one pipe is connected to the solid-liquid separation tank 10. Alternatively, each wastewater pipe may be connected to the solid-liquid separation tank 10.

The first microbubble generation device 12 serves to transport the suspended solids 90 contained in the wastewater 100 to the surface by supplying microbubbles from the bottom of the solid-liquid separation tank 10 to the top.

The first microscopic bubble generator 12 is a motor 12c, an impeller 12d, a rotating shaft 12e, as shown in FIG. 6, as in the Korean Patent Publication No. 10-0465755 filed by the applicant of the present invention ), The injection nozzle 12f, the slit partition wall 12g in which the slit is formed, and the like.

At this time, the number of the impeller 12d is not necessarily limited to two, but may be various, such as one, three or more.

In addition, although not shown, it may be formed as in the Korean Patent Publication No. 10-0465756 'bubble dissolving device' filed by the applicant of the present invention.

In general, the waste water (100) coming from the barn, such as pig farms are mixed with urine and feces of livestock, at this time the suspended solids (90) contains about 18,000 ~ 20,000 mg / ℓ.

In this case, when the microbubbles having a diameter of 1 to 50 μm are introduced through the first microbubble generation device 12 described above, the floating solids 90 are attached to the microbubbles to be suspended.

The suspended solids 90 may be removed by hand, or after preparing the fermentation tank 80 connected to the solid-liquid separation tank 10 as shown in FIG. 4, the suspended solids 90 are introduced into the fermentation tank 80. You can also

The method of injecting the suspended solids 90 into the fermentation tank 80 may be made by hand, or the fermentation tank 80 may be formed in the form of a building adjacent to the solid-liquid separation tank 10, but the solid-liquid separation tank 10 and the fermentation tank The upper surface of the wall between the (80) may be formed in an open form so that the suspended solids 90 of the solid-liquid separation tank 10 naturally flow into the fermentation tank 80.

In addition, the solids removal device 14 may be installed on the upper portion of the solid-liquid separation tank 10 so that the suspended solids 90 may flow into the fermentation tank 80 using the solids removal device 14.

The solids removing device 14 includes a belt 14c connecting the traditional motor and the rotary roller 14b, a traditional motor 14a and the rotary roller 14b, and a blade 14d for removing the solids on the belt 14c. The structure can be used.

In addition, it is possible to form a solid discharge port 15 in the upper portion of the solid-liquid separation tank 10, and to be discharged through the solid discharge port 15, the solid material rolled up to the wings (14d).

The settling tank 20, which is a component of the present invention, is installed adjacent to the solid-liquid separation tank 10 and is formed to receive the wastewater 100 from the solid-liquid separation tank 10 through the wastewater discharge pipe 13.

At this time, the sedimentation tank 20 has a lower wall surface inclined form, as shown in Figure 2, the center is provided with a hollow inner tube 21 in the center, the wastewater discharge pipe 13 is in the center tube 21 It is connected.

As a method for precipitating the solids in the center of the settling tank 20 may be installed inside the settling tank 20 in the inclined form.

That is, the wastewater 100 of the solid-liquid separation tank 10 flows into the sedimentation tank 20 through the center tube 21, and is formed so that the wastewater 100 is artificially collected from the center side.

One side of the wastewater discharge pipe 13 is installed in the lower part of the solid-liquid separation tank 10, and the other side is connected to the central tube 21 of the settling tank 20. The solids and the liquid are separated from the solid-liquid separation tank 10 Since there is little wastewater 100 in the lower part, the wastewater 100 with little solids is to be transferred to the settling tank 20.

In the center tube 21 of the settling tank 20, the conveying pipe 22 which carries the solid substance which precipitates at the bottom of the settling tank 20 to the solid-liquid separation tank 10 is provided.

The conveying pipe 22 is installed in the center tube 21 to the bottom of the settling tank 20, and the upper part of the conveying pipe 22 is connected to the upper portion of the solid-liquid separation tank 10.

In addition, an air supply pipe 22a is connected to the bottom of the conveying pipe 22, and the air supply pipe 22a is connected to the blower 60.

That is, the air supplied from the blower 60 is moved to the upper portion of the conveying pipe 22 while being supplied to the lower portion of the conveying pipe 22 through the air supply pipe 22a, and the precipitate is together with the solid-liquid separation tank 10. Will be returned.

This principle is the principle of the air pump, when the air is blown from the bottom of the tube containing the liquid, the air enters the tube and the air rises up, while the mixture of air and liquid in the tube is not mixed with air. The lower pressure is lower than the liquid at the bottom, so the liquid containing no air pushes up the liquid in the air where the lower pressure is mixed.

The settling tank 20 formed as described above is intended to completely precipitate and remove any solids remaining in the wastewater 100 in which the solids and the liquid are separated from the solid-liquid separation tank 10.

A central tube 21 is installed at the center of the settling tank 20 to allow the wastewater 100 introduced from the solid-liquid separation tank 10 to enter the central tube 21 so that the wastewater 100 is in the central tube 21. In the flow down from the lower portion of the central tube (21) is to slowly rise up to settle the solid will be well.

Therefore, the lower part of the center tube 21 is not in close contact with the bottom of the sedimentation tank 20, but is somewhat spaced apart.

The sedimentation tank 20 has a sedimentation tank outlet 23 for discharging the sewage process 100 after the sedimentation process is discharged to the next process.

The settling tank discharge port 23 may be provided with a filter 23a to prevent the floating solid 90 from flowing into the next step.

The aeration tank 30, which is a component of the present invention, is connected to the settling tank outlet 23 of the settling tank 20 described above, so that the wastewater 100, which has been settled in the settling tank 20, is introduced into the inside.

The inside of the aeration tank 30 is filled with a plurality of communication bodies 31, the second micro-foaming device 32 is connected to the blower 60 is installed at the bottom.

The second microscopic bubble generator 32 uses the same structure and shape as the first microscopic bubble generator 12.

The method of installing the communication body 31 inside the aeration tank 30 can be carried out in various ways.

As shown in the drawing, after forming the frame 33 in the form of a wire mesh, stainless steel mesh, or PVC mesh, the communication body 31 may be filled in the frame 33, and the upper and lower portions of the rectangular box form are made of porous material. After preparing the frame 33, the communication body 31 may be filled in the frame 33.

At this time, the frame 33 is spaced about 50 cm from the bottom of the aeration tank 30, the frame 33 is preferably installed spaced about 30 cm below the water surface.

The communication body 31 is a small cylinder having a hollow cylinder shape, and may use a waste bottle, a waste container, and the like, and a plastic yogurt bottle is most preferable.

At this time, when the activity of the microorganism is to be increased, it is preferable to make the supply of the micro bubbles larger by drilling a hole 31a in the bottom of the Yakult bottle.

In this structure, bubbles having a diameter of 1 to 50 μm are generated in the second microbubble generating device 32 installed under the aeration tank 30, and the bubbles rise through the communication body 31 and inhabit the communication body 31. Oxygen is supplied to the microorganisms.

The aeration tank 30 formed in this manner is configured to purify contaminants in the wastewater 100 by microorganisms by contact oxidation aeration of the wastewater 100 from which solid matter is separated from the settling tank 20.

At this time, oxygen is supplied by the microbubbles generated in the second microbubble generation device 32 installed at the bottom of the aeration tank 30, and the microorganisms use the tetraoxide to purify the wastewater 100. will be.

The communication body 31 is preferably placed randomly inside the frame 33. When the communication body 31 having the hole 31a formed at the bottom is standing upright, a lot of micro bubbles pass through the inside and thus a lot of oxygen is supplied. As the aerobic microorganisms are actively inhabited, these microorganisms oxidize contaminants to purify the wastewater 100.

In addition, the air 31 is not supplied to the air in the form of the lying side 31, anaerobic microorganisms inhabit the inside of the communication 31, to purify the contaminants in the waste water 100 by a linear fermentation do.

Standing at an angle of 45 ° to the carrier 31 is an aerobic and anaerobic intermediate microorganisms are used to purify the wastewater (100).

In this way, the yogurt bottle with a hole 31a formed in the lower portion is used as the communication body 31, and since the communication body 31 is randomly installed, aerobic, anaerobic, aerobic and anaerobic intermediate microorganisms, that is, a wide range of Microorganisms are inhabited, and the purification ability is greatly improved.

These various types of microorganisms may be naturally generated or introduced into the communication body 31 and then inhabited through a method of installing the communication body 31.

In addition, an aeration tank discharge port 34 through which the aerated wastewater 100 is discharged is formed at one side of the aeration tank 30.

The ozone input tank 40, which is a component of the present invention, is configured such that the first aeration wastewater 100 is introduced into the aeration tank 30, and the third microscopic bubble generator 41 is formed as in the aeration tank 30. It is installed.

As the third microbubble generating device 41, one having the same structure as the first microbubble generating device 12 described above may be used.

At this time, the third microscopic bubble generator 41 is connected to the ozone generator 42 so that the microbubbles including ozone are generated in the third microparticle bubble generator 41 to be supplied into the ozone injection tank 40. do.

The ozone injection tank 40 oxidizes and decomposes environmental hormones such as bilirubin (yellow red) and PCB in the wastewater 100 introduced from the aeration tank 30.

Inside the ozone injection tank 40, an ozone injection tank discharge port 43 through which bilirubin and environmental hormones are oxidatively decomposed is discharged.

The ozone generating device 42 may be a device described in Korean Patent Publication No. 10-0509813, 'Apparatus for dissolving ozone in water with high efficiency and a method using the same', filed by the applicant of the present invention.

In addition, such an ozone generator 42 is well-known, and description of the detailed internal configuration will be omitted.

Examples of the microbubbles supplied to the inside of the ozone injection tank 40 through the ozone generator 42 and the third microbubble generator 41 may be those of 5 to 15% by volume of ozone and 85 to 95% by volume of oxygen. have.

The reason for supplying the ozone-containing microbubble inside the ozone injection tank 40 is to decompose various environmental hormones and substances such as 'bilirubin' in the manure of livestock, in addition to the simple wastewater 100 purification effect.

In this case, a plurality of auxiliary aeration tanks 70 having the same structure as the aeration tank 30 may be formed between the aeration tank 30 and the ozone injection tank 40.

This is because when the scale is large, the inflow and discharge rate of the wastewater 100 supplied to the aeration tank 30 is increased because in this case, the aeration is not sufficient and the wastewater is difficult to be purified.

Therefore, the auxiliary aeration tank 70 may be formed of one chamber or a plurality of chambers according to the discharge amount and the discharge speed of the wastewater 100.

Inside the auxiliary aeration tank 70, the communication body 31 and the auxiliary micro-strength generating device 71 is installed in the same manner as the aeration tank 30.

In addition, the auxiliary micro-strength generator 71 is also connected to the blower 60, the auxiliary aeration tank discharge port 72 is formed on one side of the auxiliary aeration tank 70 to discharge the aerated waste water (100).

In addition, the blower 60 and the auxiliary micro-foaming device 71 is connected through the auxiliary connecting pipe (71a), it is preferable that the auxiliary control valve (71b) is installed on one side of the auxiliary connecting pipe (71a).

Ultraviolet bath 50, which is a component of the present invention, is introduced into the wastewater 100 in which bilirubin and environmental hormones are oxidized and decomposed in the ozone injection tank 40, and an ultraviolet lamp 51 is installed therein so that bilirubin and Environmental hormones are used to decompose ozone remaining in the wastewater 100 while sterilizing the oxidized wastewater 100.

In addition, a purified water discharge port 52 through which the purified water is discharged is formed on one side.

At this time, the wavelength of the ultraviolet lamp 51 is provided with two quartz ultraviolet lamps 51 for emitting ultraviolet rays having a wavelength of 253 to 255 nm and preferably a wavelength of 253.7 nm so as to decompose ozone and residual pollutants. It is preferable.

In addition, when the wavelength suitable for ozone decomposition and the wavelength of pollutant decomposition are different, a plurality of ultraviolet lamps 51 having different wavelengths may be provided.

On one side of the ultraviolet light tank 50, a purified water discharge port 52 through which the purified wastewater 100 is discharged is formed.

The formation of the barn wastewater purification facility as described above may be formed in various forms such as a concrete structure or a structure in the form of an adjacent tank.

In addition, the first microbubble generating device 12 and the blower 60 are the first connecting pipe 12a, and the second microbubble generating device 32 and the blower 60 are the second connecting pipe 32a and the third. The microbubble generating device 41 and the blower 60 are connected through the third connecting pipe 41a, and the first connecting pipe 12a, the second connecting pipe 32a, and the third connecting pipe 41a are respectively. The first control valve 12b, the second control valve 32b, and the third control valve 41b may be installed to adjust the amount of air supplied.

In addition, the air supply pipe 22a connected to the blower 60 may be provided with a supply pipe control valve 22b to adjust the amount of air supplied.

As such, it is preferable to connect the first microscopic bubble generator 12, the second microscopic bubble generator 32, the third microscopic bubble generator 41, and the air supply pipe 22a to one blower 60. It is not limited, and may be connected to a separate blower 60, respectively.

Referring to the operation of the present invention configured as described above are as follows.

Looking at the process of the waste water purification in the barn wastewater purification facility of the present invention, first, the manure and various wastewater 100 of the livestock generated in the barn is introduced into the solid-liquid separation tank (10).

When the wastewater 100 flows into the solid-liquid separation tank 10, the first microbubble generation device 12 inside the solid-liquid separation tank 10 is operated to supply microbubbles from the lower portion of the solid-liquid separation tank 10 to the upper portion. .

In this process, the suspended solids 90 in the wastewater 100 are combined with the microbubbles to be collected at the top. The collected suspended solids 90 are filtered through the solids removal device 14 or by hand, and then transferred to the fermentation tank 80. .

Alternatively, as described above, the upper end of the wall between the solid-liquid separation tank 10 and the fermentation tank is formed low so that the suspended solids are naturally discharged into the fermentation tank 80 on the wall.

Waste water 100 in the solid-liquid separation tank 10 is moved to the settling tank 20 through the wastewater discharge pipe 13, and the solids precipitated through the return pipe 22 when the remaining solid precipitates in the settling tank 20 The waste water 100, which is transferred to the solid-liquid separation tank 10 and the precipitation process is completed, is introduced into the aeration tank 30.

The aeration tank 30 has a primary aeration process by the micro-bubbles generated in the communication body 31 and the second micro-bubble generating device 32 installed therein, at this time purifying by contact oxidation.

The waste water 100 aerated in the aeration tank 30 is introduced into the ozone input tank 40. The ozone input tank 40 is provided with a third microparticle bubble generator 41 and an ozone generator 42. Ozone-containing oxygen causes oxidative decomposition of bilirubin and environmental hormones.

In the ozone injection tank 40, the wastewater 100 after oxidative decomposition of bilirubin and environmental hormones is introduced into the ultraviolet tank 50.

An ultraviolet lamp 51 is provided in the ultraviolet lamp 50, and the ultraviolet lamp 51 is configured to decompose ozone contained in the wastewater 100 introduced from the ozone injection tank 40.

Further, the remaining pollutants are sterilized according to the wavelength of the ultraviolet lamp 51.

Purified water after the sterilization and ozone decomposition process in the ultraviolet light tank 50 is discharged to the outside through the purified water discharge port (52).

According to the present invention, the suspended solids can be easily separated from the wastewater by supplying microbubbles having a diameter of 1 to 50 µm to the suspended solids in the wastewater.

In addition, a small blower may be used instead of the large blower used in the catalytic oxidizing method to provide a purification facility with little noise.

In addition, a method for purifying ozone by dissolving ozone in wastewater at a high concentration by using a microbubble generating device capable of dissolving ozone at high concentration in water is provided.

In particular, the injected ozone can effectively decompose and remove environmental hormones such as bilirubin and PCB.

In addition, the apparatus is simple, and the fine bubbles having a diameter of 1 to 50 µm are dissolved in the waste water, thereby increasing the amount of dissolved oxygen, thereby increasing the purification efficiency.

In addition, the wastewater from which the suspended solids are separated is purified by aeration, but the purification efficiency is improved by using a medium having a space therein and a microbubble.

In addition, waste water purification facilities having high purification efficiency are provided by decomposing residual ozone using an ultraviolet lamp.

Claims (4)

In barn waste water purification facility, A solid-liquid separation tank in which the waste water is supplied to the inside, and the first microbubble generating device connected to the blower is installed at a lower portion thereof, and one side of the wastewater discharge pipe is installed at the lower portion thereof; The center tube is installed in the inner center, and the other side of the wastewater discharge pipe is connected to the center pipe so that the wastewater of the solid-liquid separation tank is introduced into the inside through the center pipe, and the return pipe is installed inside the center pipe, but one side of the transport pipe A settling tank connected to the solid-liquid separation tank and connected to an air supply pipe connected to a blower on one side of the return pipe so that the solid precipitated at the lower portion is returned to the solid-liquid separation tank; An aeration tank connected to the settling tank to allow the wastewater to be finished to be introduced into the inside, and having a plurality of communication bodies filled therein, and having a second microbubble generating device connected to the blower at a lower portion thereof; An ozone input tank into which the waste water of the aeration tank flows into the inside, and a third microscopic bubble generator connected to the ozone generator is installed at a lower portion thereof to supply micro bubbles including ozone to the inside; The ultraviolet water tank is introduced into the waste water aerated in the ozone input tank, the ultraviolet lamp is installed therein, and the purified water discharge port for discharging the purified water on one side; Barn wastewater purification facility. The method of claim 1, Fermentation tank is connected to the solid-liquid separation tank, characterized in that the suspended solids are introduced into the fermentation tank, Barn wastewater purification facility. The method of claim 1, Between the aeration tank and the ozone input tank is installed a plurality of auxiliary aeration tank of the same structure as the aeration tank, characterized in that the aeration process proceeds in several steps, Barn wastewater purification facility. The method of claim 1, Characterized in that the solids removal device is installed on the solid-liquid separation tank, Barn wastewater purification facility.

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