KR100762885B1 - High speed aerator of slim type having multiple mixing stages - Google Patents

Abstract

A slim type high-speed aerator is provided to achieve high-speed fermentation, by sequentially mixing a solution to be treated an external air within one cylinder body in an injector type so as to mix and discharge the solution to be treated and the air at high speed. A slim type aerator comprises an air mixing unit(10) and a circulating unit. The air mixing unit is vertically installed such that an upper end of the air mixing unit rises above a surface of water. The air mixing unit mixes a solution to be treated and external air, which are supplied from the uppermost circularly and sequentially, in an injector type of a multi-stage structure. The air mixing unit discharges the mixture to a lower portion of a treatment tank(5). The circulating unit compulsorily circulates the solution to be treated within the treatment tank toward an upper side of the air mixing unit.

Description

High Speed Aerator of Slim Type Having Multiple Mixing Stages

Figure 1 shows the overall configuration of the slim type high speed aeration device according to a first embodiment of the present invention, the air mixing unit portion is a schematic front view partially cut to know the internal structure,

2 is a side view of the aerator shown in FIG. 1;

3 is a plan view of a part of the aerator shown in FIG. 1;

4 is an exemplary view of a winch device used to move the aeration device according to the present invention.

* Explanation of Signs of Major Parts of Drawings *

One ; High speed aerator 3; Submersible pump

4 ; High pressure hose 4a; Connection

5; Treatment tank 7; Treated liquid

9; Mixed liquid 10; Air mixing device

11; First vertical cylindrical portion 11a; An introduction tube

11b; Cleaning lid 13; 1st accelerator

15; Second vertical cylindrical portion 15a; 1st air injection unit

15b; Second accelerator 15c; Discharge

17; Third vertical cylindrical portion 17a; 2nd air injection

17b; Outlet 20; Air inlet pipe

21; Air inlet 23; Air introduction pipe body

30; Winch device

The present invention relates to a slim high speed aeration device, and in particular, is provided with a slim air mixing device of a multi-stage mixing structure in which the liquid to be processed and the external air are sequentially mixed in an injector manner, and the air to be treated at high speed The present invention relates to a slim high-speed aeration device having a multi-stage mixing structure in which high-speed stirring and aerobic fermentation can be performed by circulating the mixed solution through the treatment tank.

In general, various sewage, industrial wastewater, and livestock wastewater (hereinafter referred to as “sewage / wastewater”) discharged from various household sewage and manure septic tanks are treated with water at all times due to environmental pollution, so that BOD (biological oxygen demand) is kept as low as possible. It is regulated by the law, and for this, factories or large apartment complexes that discharge various wastewater are required to install wastewater treatment facilities.

Industrial wastewater discharged from various kinds of sewage, livestock wastewater and dyeing factories contains a large amount of organic substances and colors that pollute the river or the coast, and if discharged without proper treatment, it will pollute the ecosystem of rivers and nearby areas. Or destroy the environment.

Therefore, these various wastewaters should be purified and discharged, and the function and efficiency of the treatment device depend on how quickly and continuously many aerobic microorganisms that lower the BOD of the wastewater in the contact oxidation tank can be cultured. This is because, by activating the indigenous microorganisms in this way, it is possible to more quickly and efficiently remove suspended matter, contaminants and chromaticity contained in the wastewater / wastewater.

The aeration device was installed in the treatment tank of the wastewater treatment device to supply oxygen necessary for biological treatment of the wastewater / wastewater or to supply oxygen to the water to activate the water.

First, Utility Model No. 172329 proposed an aeration type wastewater treatment apparatus that can increase the amount of dissolved oxygen by increasing the gas-liquid contact area by increasing the surface area of air bubbles and increasing the residual time in water. The utility model technology is fixed to the bottom of the aeration tank is installed in the bottom of the apparatus main body to draw the wastewater mixed with air in the bottom-up structure to raise the guide vane disposed on the upper side by the impeller, so In addition, the impeller operation efficiency is lowered, and the waste water mixed with air does not circulate inside the aeration tank but proceeds in the horizontal direction and rises above the water surface, thereby causing limited gas-liquid contact. In addition, in the prior art, the problem of depositing sediments has not been solved.

Patent application No. 1999-4806 (Method and device for dewatering wastewater, livestock and manure wastewater) is provided with an ultrasonic aeration device connected to an ultrasonic air device in a collection tank to perform oxidative decomposition aeration and pyramid in the collection tank. The raw water is repeatedly circulated by a pyramid oxidizer equipped with a circulating pump for oxidizing contact, and the final treated water is reused through continuous treatment such as chemical treatment, flocculation filtration, sludge concentration, and ozone treatment. Although a technique for discharging is disclosed, it is not suitable for the treatment of sewage / waste water of medium / small scale structure because it uses an expensive facility such as an ultrasonic aeration device and a circulation pump.

In addition, Utility Model Application No. 2002-32731 (Oxygen supply device for wastewater and sewage treatment plant) connects the suction pipe and the discharge pipe to the inlet and the outlet of the circulation pump, and the suction pipe and the discharge pipe are located at the bottom and the upper side of the reservoir. Although a structure is disclosed in which water and air are mixed and discharged by supplying compressed air provided from the compressed air supply means to the outside of the water spray nozzle through the air spray nozzle, expensive equipment such as a circulation pump and compressed air supply means is disclosed. There is a downside to using it.

On the other hand, Patent Publication No. 2003-7354 (Jet aeration oxidizer) in the jet (Z) aeration apparatus installed in the oxidative incubator to animate the manure physicochemically aerated sludge and urine to form a bubble, then After removing the bubbles from the formed bubbler, by discharging the gas to the upper part and draining the liquid to the lower part can rapidly treat livestock manure and wastewater, and reuse the treated manure and wastewater Although this is proposed, since the jet (Z) aerator, the deaerator and the gas discharge device are each composed of an impeller and a driving motor, the manufacturing cost is high, the overall structure is complicated, and the impeller of the jet aerator is locked in water (manure). Since the liquid to be processed flows through the through-holes formed in the middle and the lower part of the case and mixed with air, the load on the impeller driving motor is increased. Poor province operating costs are high.

In addition, the oxidizer may not perform high-speed circulation of the liquid to be mixed with air due to the large load to the entire oxidizing tank, and as a result, full manure may not be achieved and sediment may be deposited. There is a problem that bubbles remain, and since unfermented sludge particles are discharged to the outside through a gas fan forming a gas exhaust device, there is a problem of causing environmental pollution (for example, gas odor, etc.), and oxidative injury. Since the jet aeration device is fixedly installed in the upper part of the tank, there is a problem that the operation rate is lowered because automatic level control is not made due to the level of the liquid to be treated.

In addition, since the conventional wastewater treatment apparatuses are all fixedly installed, it is impossible for a user to select and process a local region of a wastewater treatment tank as needed.

On the other hand, in order to purify fresh water such as reservoirs, lakes and dams, compressed air generating tanks and storage tanks are installed in deep water of the depth of water, and a plurality of pumps are installed in the flow pipe connected between the structure and storage tanks on the water surface. Utility Model Registration Application No. 2000-28362, which provides a pumping tank and discharges compressed air through the width pipe of the flow path pipe to increase the dissolved oxygen in the water and to circulate the water by raising the water in the bottom layer with the pumping tank. No. 2000-35637, 2002-19979, and patent application 2001-8056.

In addition, Utility Model Registration No. 1998-26300 (Upward Vertical Aeration Type Oxygen Supply Device), in the underwater oxygen supply device consisting of a pump and an aerator, pumped water is sucked by a pump installed at the bottom of the treatment tank. The water is circulated from the upper part of the treatment tank to the lower part, and the discharge nozzle is installed upward, and the air and the positive water are discharged to the upper part, so that water can be agitated regardless of the depth, and the length of the water pipe is adjusted to minimize the influence of the water pressure. Is disclosed.

The above-described oxygen purifiers for water purification are suitable for the purpose of treating fresh water contained in a deep water and not suitable for high speed fermentation such as manure.

At least one circulation pump for forcibly circulating the to-be-processed liquid in the treatment tank by the applicant in view of the above problems; When the to-be-processed liquid circulated by the circulation pump is supplied at high pressure through the inlet, the inflow passage of air is formed while concentrically surrounding the to-be-processed liquid guide and the to-be-processed liquid guide which are discharged from the lower outlet. A mixing device having a plurality of air introduction guides, for mixing and discharging the liquid to be treated and forcedly sucked air by a strong negative pressure formed under the plurality of air introduction guides; A high-speed aeration device composed of floating means for maintaining the upper part of the main body housing of the mixing device on the surface of the liquid to be treated has been proposed through Patent No. 512089 of August 26, 2005.

However, the aeration device is provided with a bulky floating means such as a bure to float the mixing device on the outside of the mixing device, it is not easy to move because of the large volume of the whole device, the mixing device body to be treated When immersed in, it was difficult to give slant angle due to the floating means, so it was difficult to treat the sludge and the like deposited on the corner of the rectangular treatment tank tank.

In addition, in the conventional aeration device, since the air mixing structure surrounds the liquid guide to be treated concentrically by a plurality of air introduction guides to form an air inflow passage, the structure is complicated, so durability is low, and the volume is manufactured. The process is complicated and the manufacturing cost increases, and if the depth of the treatment tank is deep, correspondingly, the diameter of the main body, that is, the volume, increases proportionally to increase the length of the mixing device or to enhance the air mixing performance. have.

Therefore, the present invention has been made in view of the problems of the prior art, the object of which is vertically disposed slim high-speed aeration having an air mixing device of a multi-stage mixing structure in which the liquid to be processed and the external air are sequentially mixed in an injector method. To provide a device.

Another object of the present invention is because the process of mixing the air to the liquid to be treated is made sequentially from the top inside the substantially one cylindrical body arranged vertically, the force ejected to the bottom through the outlet in the water is greatly increased, The present invention provides a slim high-speed aeration device having a multi-stage mixing structure in which the liquid to be treated and air can be mixed at high speed and discharged, and as a result, the liquid can be rapidly circulated through the entire treatment tank.

Another object of the present invention is to generate the negative pressure and the air mixing structure of the air mixing device is extremely simple and simple, can be easily extended to the multi-stage structure as necessary to enhance the fermentation performance, easy to move and low manufacturing cost It is to provide a slim high speed aeration device with excellent durability by eliminating failure factors.

Another object of the present invention is to provide a slim high-speed aeration device capable of arbitrarily setting the direction of the liquid to be discharged through the outlet because the inclination angle can be given when the air mixing apparatus is immersed in the liquid to be treated. .

Another object of the present invention is to extend the length to correspond to the depth of the treatment tank tank without increasing the diameter (volume) of the air mixing device according to the depth of the treatment tank tank, so that the untreated sludge at the tank bottom The present invention provides a slim, high-speed, high-efficiency aeration device that can be prevented from remaining.

Still another object of the present invention is to separate the water pump for circulation from the air mixing device, and then by using a high pressure hose to connect the water pump to one side of the treatment tank tank and the air mixing device by placing the treatment tank on the other side Agitating and fermentation of the entire tank can be made efficiently, and to provide a slim high-speed aeration device that can be made simple in structure and easy to maintain according to the separation of the water pump.

Another object of the present invention is to install the air mixing device in a suspension method using a winch device according to the conditions of the installation site, or to directly connect the air mixing device and the water pump, or to connect the air mixing device as in the prior art It is to provide a slim high speed aeration device that can be used by floating on the water.

In order to achieve the above object, the present invention is installed vertically so that the upper end is floated on the surface of the treatment tank by supplying the liquid to be treated and circulated sequentially supplied from the upper end in the injector method of the multi-stage structure to supply to the lower end Provides a slim high-speed aeration device characterized in that it comprises an air mixing device for discharging the mixed liquid to the lower portion of the tank, and a circulation device for forcibly circulating the processing liquid in the treatment tank tank to the upper side of the air mixing device. .

In this case, the air mixing device is formed integrally extending at the lower end of the first vertical cylindrical portion and the first vertical cylindrical portion to which the liquid to be treated is supplied at a high pressure, the outlet of the lower side in response to the supply of the liquid to be treated. A first acceleration device for accelerating discharge of the liquid to be processed from the high speed; and an upper end sealingly coupled to an upper outer periphery of the first accelerator, and having a first air inlet above the lower end of the first accelerator; A second vertical cylindrical portion in which air is introduced by the strong negative pressure generated by the high-speed flow of the liquid to be discharged through the first acceleration device, whereby the liquid to be treated is mixed with the intermediate portion of the first vertical cylindrical portion; By enclosing the middle portion of the second vertical cylindrical portion in a sealed state to include the first air inlet therein and including an air introduction pipe extending so that the upper end thereof is exposed to air. It is preferable to.

In addition, the second vertical cylindrical portion further includes a second acceleration device for discharging the mixed liquid mixed with air to the lower side at a high speed, the air mixing device is the upper end sealing coupling to the upper outer periphery of the second accelerator And a second air inlet above the lower end of the second accelerator and air is introduced by the strong negative pressure generated by the high speed flow of the liquid to be discharged through the second accelerator. And a third vertical cylindrical portion in which the mixing is performed, wherein the air introducing pipe surrounds the first and second air inlets by enclosing the middle portion of the first vertical cylindrical portion from the middle portion of the third vertical cylindrical portion in a sealed state. It is preferred that the upper end is formed to extend so as to be exposed in the air.

The air mixing device is integrally formed at the lower end of the first vertical cylinder portion to which the liquid to be treated is supplied at a high pressure and at the lower end of the first vertical cylinder portion, and is treated from the outlet of the lower portion in response to the supply of the liquid to be treated. A first acceleration device for accelerating the discharge of the liquid at a high speed, and a plurality of air inlets respectively coupled to an upper outer periphery of the accelerator disposed at an upper end thereof and disposed above the lower end of the accelerator at each stage; Air is introduced by the strong negative pressure generated by the high-speed flow of the liquid to be discharged through the accelerator, so that the liquid to be treated and the air are mixed. A plurality of vertical cylinders including an accelerator of the first, and the middle portion of the first vertical cylindrical portion from the middle portion of the first vertical cylindrical portion to the sealing state Going by to wrap contained inside a plurality of air inlet and may include an extension formed in the air inlet tube to the upper end portion is exposed to the air.

Preferably, the first accelerator is composed of a reduction-enlargement nozzle, and the second accelerator has a structure in which the diameter gradually decreases.

In addition, the plurality of accelerators may have a structure in which the diameter gradually decreases.

According to another feature of the invention, the present invention is installed so that the upper end is floating on the water surface by mixing the external air introduced by generating a strong negative pressure on the lower side of each stage by accelerating the discharged to-be-processed liquid to the lower end And at least one injector, an air mixing device for discharging the mixed liquid to the lower portion of the treatment tank, and a circulation device for forcibly circulating the liquid to be treated in the treatment tank to the upper side of the air mixing apparatus. It provides a high speed aeration device characterized in that.

In this case, the circulation device may be separated from or integrally formed with the air mixing device.

In addition, the aeration device may further include a floating means for maintaining the upper surface of the air mixing apparatus is floating on the surface of the liquid to be treated.

As described above, in the present invention, since the process of generating negative pressure and mixing of air is sequentially performed in one cylindrical body arranged vertically, the force ejected to the bottom through the outlet in water is more than twice as high as in the prior art. It is greatly increased, and the liquid to be processed and air can be mixed at high speed and discharged. As a result, the high speed fermentation can be achieved by rapidly circulating the mixed liquid to the entire treatment tank.

In addition, in the present invention, the negative pressure generation and the air mixing structure of the air mixing device are designed to be extremely simple and simple, easy to move, low in manufacturing cost, and excellent in durability by eliminating failure factors, and separated from the air mixing device. By connecting the water pump for circulation by using a high pressure hose, the water pump is disposed on one side of the treatment tank, and the air mixing device is placed on the other side, so that the entire treatment tank can be efficiently stirred and fermented. Simple and easy to maintain.

Furthermore, in the present invention, the air mixing structure of the air mixing device can be extended in multiple stages as necessary to enhance the fermentation performance, and the inclination angle can be given when the air mixing device is soaked in the liquid to be treated. The direction of the liquid to be discharged can be arbitrarily set by the user, and the length of the air mixing device can be extended to be installed according to the depth of the tank, thereby preventing untreated sludge from remaining on the tank bottom.

(Example)

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

FIG. 1 is a schematic front view partially showing the internal structure of the slim type high speed aeration device according to the first preferred embodiment of the present invention, and the air mixing unit part is shown in FIG. 3 is a plan view of a portion of the aerator shown in FIG.

Referring to the drawings, the high-speed aeration device 1 according to the present invention is a treatment liquid (7) collected in the treatment tank (5), for example, various sewage (sewage) from the various sewage and manure purification tank Industrial wastewater, livestock wastewater is applied to the treatment tank tank (5) of the wastewater treatment device to supply the oxygen necessary for biological treatment using aerobic microorganisms or to supply the oxygen to the water to activate the water, or the livestock manure It is then used to ferment the liquid sludge and recycle it to the liquid ratio.

The high-speed aeration device 1 according to the first embodiment of the present invention includes an injector-type air mixing device 10 for largely mixing the liquid to be processed 7 with air at high speed and high efficiency, and It consists of an submersible pump 3 for forcibly circulating the processing liquid 7 through the high pressure hose 4 to the upper side of the mixing apparatus 10.

In the high-speed aeration device 1 according to the present invention, the submersible pump 3 is installed to be immersed in the processing liquid 7 of the treatment tank tank 5, and the air mixing device 10 is the winch device shown in FIG. 4. Using the 30, the upper end is installed and used to rise above the water surface.

However, the submersible pump 3 may be installed at any one of the floating device of the aeration device 1, not shown on the ground or shown, instead of being installed inside the treatment tank. In this case, when the circulation pump is installed on the ground instead of the water pump, one hose is installed inside the circulation pump and the treatment tank (5), and the other hose is connected between the circulation pump and the mixing device (10). Use it.

In the air mixing device 10 of the first embodiment, an inlet pipe 11a having a lid 11b for cleaning the inside is provided at the upper end of the first vertical cylindrical portion 11 and the processing liquid 7 is introduced at the upper side. It is formed to extend in the horizontal direction so as to be connected by the high-pressure hose (4) and the connecting fixture (4a), the processing liquid 7 introduced below the first vertical cylindrical portion 11 is the first vertical cylindrical portion ( The first acceleration device 13 is integrally formed so as to accelerate the descending speed of the liquid to be treated 7 when freely falling vertically in the interior of 11).

The first acceleration device 13 has an inner diameter of the middle portion (neck portion) smaller than the upper and lower portions, and the inner diameter gradually decreases from the upper portion toward the middle portion, and the inner diameter gradually increases from the middle portion to the lower portion. Laval nozzle shape is achieved. In the case of applying the processing liquid 7 at a high pressure to the upper portion of the first acceleration device 13 having a reduction-expansion nozzle, for example, a Laval nozzle structure, the middle portion of the reduction-expansion nozzle ( After the hydraulic pressure is increased in the neck), the pressure is lowered toward the lower opening and the flow rate of the fluid (the liquid to be treated) increases at a high speed.

In addition, in the mixing device 10, it is necessary to apply the processing liquid 7 at a high pressure to the upper portion of the first acceleration device 13 having a reduction-expansion nozzle structure so that a strong negative pressure may be generated at the lower portion. Therefore, the submersible pump 3 is preferably set to have a sufficient capacity to apply the liquid to be processed 7 to the upper portion of the first acceleration device 13 at a high pressure.

A second vertical cylindrical portion 15 is disposed below the first accelerator 13, and the second vertical cylindrical portion 15 has an upper end of the same diameter sealed at an outer side of the first accelerator 13. The first air injection portion 15a is coupled to the outside of the first acceleration device 13, and the external air is introduced above the level of the lower end of the first acceleration device 13. The second acceleration device 15b for increasing the descending speed of the t) is disposed, and the lower part is provided with a discharge part 15c having a diameter slightly smaller than the upper end part.

In addition, a third vertical cylindrical portion 17 is disposed below the second vertical cylindrical portion 15, and the third vertical cylindrical portion 17 has the same diameter and has an upper end with the second acceleration device 15b. The second air inlet 17a, which is sealed to the outside of the outside and introduces external air, is disposed above the lower end level of the outlet 15c of the second vertical cylinder 15, and the outlet 17b of the lower side is disposed. ) Is discharged from the mixture 7 and the mixture 9 of air.

The first to third vertical cylindrical portions 11, 15, and 17 form a first path Fs through which the liquid to be processed 7 passes.

On the other hand, the air introduction pipe, that is, the arc engine 20 is coupled to one side of the first to third vertical cylindrical portion (11, 15, 17) to form a second path (Fa) through which air is introduced, The air introduction pipe 20 has an intermediate portion of the third vertical cylindrical portion 17 from the middle portion of the first vertical cylindrical portion 11 to include the first and second air injection portions 15a and 17a therein. Is enclosed in a sealing state and, in the case of a large size according to the processing capacity of the apparatus, is made of a cylinder so as to enclose the whole, and in other cases, it is made of a rectangular tube. It includes an air introduction portion 21 extending vertically to be exposed to the air.

The operation of the slim fast aeration device according to the first embodiment of the present invention configured as described above will be described in detail below.

In the high speed aeration device 1 according to the present invention, the submersible pump 3 is installed on one side of the treatment tank 5 so as to be immersed in the processing liquid 7, and the air mixing device 10 is the winch device 30. Using the upper end, in particular the air introduction portion 21 is installed and used to rise above the water surface.

First, when the submersible pump 3 is operated, the to-be-processed liquid 7 of the treatment tank tank 5, for example, various sewage and industrial wastewater, livestock wastewater, or liquid sludge is discharged through the high pressure hose 4. It is supplied to the air mixing device 10.

The to-be-processed liquid 7 is freely dropped by gravity vertically from the inside through the inlet pipe 11a of the first vertical cylindrical portion 11 along the first path Fs and moves the first acceleration device 13. As it passes, the descending flow rate of the processing liquid 7 accelerates rapidly.

That is, since the first accelerator 13 has a reduced-expanded nozzle, for example, a Laval nozzle structure, the first liquid accelerator 13 has a high pressure at the upper portion of the first accelerator 13. In this case, the oil pressure increases in the middle part (neck part) of the reduction-expansion nozzle, and then the pressure decreases toward the lower opening and the flow rate of the fluid (treatment liquid) increases at a high speed.

As described above, when the liquid to be processed 7 is accelerated at high speed while passing through the first accelerator 13 and discharged to the second vertical cylindrical portion 15, a strong negative pressure is generated at the lower side of the first accelerator 13. . As a result, the first air injection portion 15a, which is above the lower end level of the first accelerator 13, is also in communication with the lower end of the first accelerator 13, and the upper end of the second vertical cylindrical portion 15 Sealing is coupled to the outside of the first accelerator 13, the air introduced from the outside through the air inlet 21 by the strong negative pressure under the first accelerator 13 is sucked in the processing liquid 7 of the high-speed flow ) Is discharged to the bottom while mixing. That is, in the present invention, the treatment liquid 7 and the air are mixed and discharged by an injector method.

In this case, both the flow of the liquid to be processed along the first path Fs and the flow of the air flowing along the second path Fa are made at high speed. This is done at high speed.

After that, the liquid 7 to be primarily mixed with air in the second vertical cylindrical portion 15 is mixed with air through the inlet portion 15a, so that the pressure is slightly lowered and the flow rate is temporarily lowered. However, the secondary acceleration is made while passing through the second acceleration device 15b of the second vertical cylindrical portion 15 disposed below. That is, in the second acceleration device 15b, since the diameter is gradually reduced, the descending flow rate of the liquid to be processed 7 is increased again.

As a result, the liquid to be processed 7 passes through the second acceleration device 15b of the second vertical cylinder portion 15 at high speed and is discharged from the lower side of the second acceleration device 15b, that is, the third vertical cylinder portion 17. ), A strong negative pressure is generated. Accordingly, the second air injection portion 17a, which is above the lower end level of the second accelerator 15b, is also in communication with the lower end of the second accelerator 15b, and the upper end of the third vertical cylindrical portion 17 is formed. Sealed outside the two accelerators 15b, the outside air introduced from the air inlet 21 by the strong negative pressure below the second accelerator 15b is injected along the second path Fa. It is sucked through the portion 17a and discharged downward while being mixed with the processing liquid 7 of the high speed flow.

In this case, in the present invention, a large amount of air is sucked twice at a high speed through the first and second air injection units 15a and 17a at the lower side of the first and second accelerators 13 and 15b, respectively, to be treated. A large amount of air is forced into (7), and the injected air is the driving force for rapid fermentation. In addition, by the hydraulic pressure of the mixed liquid 9 discharged from the outlet 17b of the third vertical cylindrical portion 17, the mixed liquid 9 is shot to the bottom of the treatment tank 5, and the sludge stuck to the bottom in the process. They are also broken down. As a result, the sludge decomposed in the fermentation process is also fermented together.

That is, in the present invention, since the process of generating negative pressure and mixing of air is sequentially performed in one cylinder substantially consisting of the first to third vertical cylindrical portions 11, 15, and 17 arranged vertically. The force ejected from the water to the floor through the lowermost outlet is increased by more than twice as much as before, and the liquid to be treated and the air can be mixed at high speed and discharged. As a result, the liquid is circulated to the entire treatment tank at high speed. Thus, high speed fermentation can be achieved.

Therefore, the flow of the liquid to be processed along the first path Fs and the air flowing along the second path Fa is made at a high speed. As a result, the mixing and the discharge of the liquid 7 and the air to be processed are also achieved. This is done at high speed.

In addition, when the submersible pump 3 and the air mixing device 10 are disposed far apart, the mixed liquid 9 discharged from the air mixing device 10 is strongly discharged to the lower portion of the treatment tank tank 5, At the same time as the stirring is made to induce a flow circulating through the entire treatment tank (5) can be a high speed stirring and fermentation.

Furthermore, in the present invention, the winch device 30 is used instead of using a burette to lift the air mixing device 10 so that the inclination angle is reduced when the air mixing device 10 is immersed in the processing liquid 7. The user can arbitrarily set the direction of the mixed liquid 9 discharged through the discharge port, and it is possible to extend the length of the air mixing device 10 according to the depth of the tank, so that untreated sludge remains on the tank bottom. Can be prevented.

In addition, in the present invention, the negative pressure generation and the air mixing structure of the air mixing device are extremely simple and simple, making it easy to move and inexpensive to manufacture, and as a result, failure factors are greatly reduced, so durability is excellent, and maintenance is also possible. It can be made easily, and the air mixing structure of the air mixing device 10 can be formed in two or more stages of multi-stage as necessary to enhance the fermentation performance.

According to the present invention, in addition to installing the air mixing device in the suspension method using the winch device as in the above embodiment, the air mixing device and the submersible pump may be directly used without using a high pressure hose according to the installation site conditions. As in the prior art, it is possible to use the method by floating the buoy to the air mixing device to float on the water.

Moreover, since high-speed air injection and agitation are performed as described above, the fermentation time is relatively low, and thus the operating cost of the aeration device for fermentation is low.

As described above, in the present invention, since the processing liquid and the external air are mixed in the injector method in one cylindrical body arranged vertically, the force ejected to the bottom through the outlet in water is twice as high as before. It is greatly increased as described above, and can be discharged by mixing the liquid to be treated with air at high speed, and as a result, the high speed fermentation can be achieved by rapidly circulating the mixed liquid throughout the treatment tank.

In addition, in the present invention, the negative pressure generation and the air mixing structure of the air mixing device are designed to be extremely simple and simple, easy to move, low in manufacturing cost, and excellent in durability by eliminating failure factors, and separating from the air mixing device main body. By connecting the submerged pump for circulation using a high pressure hose, the submersible pump is disposed on one side of the treatment tank and the air mixing unit main body is disposed on the other side, so that the entire treatment tank can be efficiently stirred and fermented. Therefore, the structure can be simple and easy to maintain.

Furthermore, in the present invention, the air mixing part of the air mixing device can be formed in multiple stages as necessary to enhance the fermentation performance, and can also give the inclination angle when the main body is immersed in water to change the direction of the water discharged through the outlet. It can be set by the user arbitrarily and can be installed to extend the length of the main body in accordance with the depth of the tank to prevent the remaining untreated sludge on the tank bottom.

In the above, the present invention has been illustrated and described with reference to specific preferred embodiments, but the present invention is not limited to the above-described embodiments and is not limited to the spirit of the present invention. Various changes and modifications can be made by those who have

Claims (10)

Air mixing for discharging the mixed liquid to the lower part of the treatment tank by mixing the liquid to be processed and the external air sequentially circulated and supplied from the uppermost part to the lower part by vertically installed so that the upper part floats on the water surface. Device, And a circulation device for forcibly circulating the liquid to be treated in the treatment tank to the upper side of the air mixing device. According to claim 1, wherein the air mixing device A first vertical cylindrical portion to which the liquid to be treated is supplied at a high pressure side; A first acceleration device which is integrally formed at the lower end of the first vertical cylindrical portion and accelerated to discharge the processing liquid at a high speed from the lower discharge port in response to the supply of the processing liquid; The upper end portion is coupled to the upper outer circumference of the first accelerator and has a first air inlet above the lower end of the first accelerator and is generated according to the high speed flow of the liquid to be discharged through the first accelerator. A second vertical cylinder portion through which air is introduced by a strong negative pressure to mix the liquid to be processed with the air; A first air inlet is formed therein by enclosing the middle portion of the first vertical cylinder portion from the middle portion of the second vertical cylinder portion in a sealed state, and an air introduction pipe formed to extend so that the upper end portion is exposed to air. Slim high speed aeration device. According to claim 2, wherein the second vertical cylindrical portion further comprises a second acceleration device for discharging the mixed liquid mixed with the air at the lower side at a high speed, The air mixing device has an upper end sealingly coupled to an upper outer circumference of the second accelerator and has a second air inlet above the lower end of the second accelerator, and is discharged through the second accelerator. Further comprising a third vertical cylindrical portion in which air is introduced by the strong negative pressure generated according to the flow to mix the liquid to be treated with the air, The air inlet pipe includes a first and a second air inlet therein by enclosing the middle portion of the first vertical cylinder portion from the middle portion of the third vertical cylinder portion in a sealing state, and the upper end portion is formed to extend in the air. Slim high speed aeration device characterized by. According to claim 1, wherein the air mixing device A first vertical cylindrical portion to which the liquid to be treated is supplied at a high pressure side; A first acceleration device which is integrally formed at the lower end of the first vertical cylindrical portion and accelerated to discharge the processing liquid at a high speed from the lower discharge port in response to the supply of the processing liquid; Each of the upper ends are sealedly coupled to the upper outer periphery of the accelerator disposed above, and have a plurality of air inlets disposed above the lower end of the accelerator of each stage and are generated according to the high speed flow of the liquid to be discharged through the accelerator. A plurality of vertical cylinders including a plurality of accelerators for introducing the air by the strong negative pressure, and a plurality of accelerators for discharging the mixed liquid and air at high speed to the lower side, By enclosing the middle portion of the first vertical cylindrical portion from the lowermost vertical cylindrical portion in the sealing state by including a plurality of air inlet and an air inlet pipe formed to extend so that the upper end is exposed to the air, characterized in that Slim high speed aeration device. 5. The slim high speed aeration device as claimed in claim 2 or 4, wherein the first acceleration device is constituted by a reduction-enlargement nozzle. The slim high speed aeration device according to claim 3, wherein the second acceleration device has a structure in which the diameter gradually decreases. The slim high speed aeration device according to claim 4, wherein the plurality of accelerators have a structure in which the diameter gradually decreases. At least one injector is installed so that the upper end is floated on the surface of the water to accelerate and discharge the treated liquid circulated and discharged to the lower side, thereby generating a strong negative pressure at the lower side of each stage, and mixing the introduced air. An air mixing device for discharging to the lower part of the tank, And a circulation device for forcibly circulating the liquid to be treated in the treatment tank to the upper side of the air mixing device. 9. The slim high speed aeration device according to claim 8, wherein the circulation device is formed separately or integrally with the air mixing device. The slim high-speed aeration device according to claim 8, further comprising floating means for maintaining an upper surface of the air mixing device floating on the surface of the liquid to be treated.

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