KR20220004547A - High-concentration wastewater sludge without clogging oxygen supply - Google Patents

Abstract

An object of the present invention is to provide a clogging-free air tank for high-concentration wastewater sludge, capable of efficiently treating high-concentration wastewater sludge in a chemical-free, filtration-free manner because oxidation is highly activated. The clogging-free air tank comprises: an inner oxygen tank (210) connected to an air supply pipe (201) concentrically to form an upward flow path (212) and provided with a plurality of first vortex plates (216) therein wherein a lower part is closed by a bottom plate (214); an outer oxygen tank (220) spaced apart to accommodate the inner oxygen tank (210) to form a downward flow path (222), and provided so that the upper part is closed by an upper plate (224); and a check valve (230) installed between the inner oxygen tank (210) and the outer oxygen cylinder (220) to open and close the downward flow path (222) to apply a closing operating force by an elastic body (232). When using the clogging-free air tank for high-concentrated wastewater sludge, the air diverts by 180° along the upward and downward flow paths due to the combination of the inner and outer oxygen tanks and the primary and secondary vortices are generated. Accordingly, oxidation is highly activated, and high-concentration wastewater sludge is efficiently treated with no chemicals and no filtration. In particular, the air supply pipe is protected by not being exposed by the check valve, so the clogging and contamination by high-concentration wastewater sludge can be prevented.

Description

{High-concentration wastewater sludge without clogging oxygen supply}

The present invention relates to a clog-free diffuser of high-concentration wastewater sludge, and more particularly, a non-clogging diffuser of high-concentration wastewater sludge that can efficiently treat high-concentration wastewater sludge in a chemical-free and filtration-free manner because oxidation is highly activated. is about

In general, livestock wastewater is a mixture of livestock manure and livestock wastewater discharging facilities mixed with livestock manure. Compared to human excreta of 12,500 ppm, the BOD concentration of human excreta was 28,500 ppm, pigs 68,000 ppm, and chickens 65,000 ppm. Since the pollution load according to the amount of wastewater generated is very large, if it is discharged into public waters without proper treatment, it not only deteriorates the water quality of rivers and rivers and eutrophication of lakes, etc. was causing

That is, when a large amount of livestock wastewater is discharged as it is, anaerobic bacteria increase as oxygen is depleted in the water, and organic matter is oxidized incompletely by anaerobic fermentation. The same polluted water is purified again by the self-cleaning action. At this time, the factors that make the self-cleaning action occur include the substrate concentration, PH, temperature, and dissolved oxygen. In particular, the bacteria required for water purification are aerobic bacteria, and sufficient oxygen must exist in the water to increase the aerobic bacteria.

Therefore, a purification facility is provided for biologically purifying water by increasing the reproduction of aerobic bacteria, where factors such as substrate concentration, PH, and temperature that affect purification efficiency are inherent properties of sewage and wastewater itself. Therefore, it can be said that the concentration of dissolved oxygen is the only factor for improving the purification efficiency by artificial manipulation in the purification facility.

Accordingly, in Patent Registration No. 10-0537076 disclosed in the prior art, a vortex box installed above a supply pipe installed to supply oxygen (including air) or fluid (sewage, sewage, etc.) into microorganisms or fluids in the tank, and the vortex box In the fluid mixing and diffuser device comprising a plurality of connecting members stacked on the upper side and a plurality of fluid crushing protrusions formed inside the connecting member, formed on both sides of the lower side of the vortex box to distribute the fluid according to the flow of fluid or air A technology composed of a fluid inlet for suction and a threaded part formed outside the connection part of the reducing venturi pipe to correspond to the spiral coupling part as well as to form a spiral coupling part in the supply pipe connected to the vortex box is presented in advance have.

In addition, in Utility Model Registration No. 20-0306917, which is another prior art, it is installed on the upper side of the air supply pipe installed to supply oxygen to the microorganisms in the aeration tank, and a pedestal coupled to the upper side of the vortex box, and is laminated on the upper side of the vortex box In the diffuser comprising a plurality of connecting members installed and a plurality of protrusions formed inside the connecting member, an air separation wall formed at the intersection of the swirl flow forming plate inside the vortex box to evenly distribute the flow of air; , a technology consisting of an air flow guide plate formed between the end of the protrusion protruding from the connecting member and the inner periphery of the connecting member to additionally guide the movement of air has been previously registered.

However, the prior art is to stably supply oxygen to the microorganisms in the microbial aeration tank during wastewater and sewage treatment, but the oxygen supply efficiency is low, and when sediment accumulates due to long-time continuous or intermittent operation, the inside of the vortex box is easily clogged and sufficient The purification efficiency decreased sharply due to the failure to oxidize, and especially when applied for high-concentration wastewater treatment, the vortex function was lost due to the high-concentration wastewater flowing back into the vortex chamber, resulting in a significant decrease in aeration efficiency.

KR 10-0537076 B1 (2005.12.09.) KR 20-0306917 Y1 (2003.02.27.)

Accordingly, the present invention was conceived to solve the above problems, and the primary and secondary vortices are generated as the air is switched 180° along the upper and lower flow paths by the combination of the diffuser inner tube and the diffuser outer tube, so the oxidation action is highly effective. It can be activated to efficiently treat high-concentration wastewater sludge in a chemical-free, filtration-free method. In particular, the air supply pipe is protected in an unexposed state by a check valve to prevent clogging and contamination by high-concentration wastewater sludge. Its purpose is to provide unobstructed colic.

In order to achieve this object, a feature of the present invention is that it is connected to the air supply pipe 201 and concentrically to form an upward flow path 212, and a plurality of first vortices are closed inside by the bottom plate 214 while the lower part is closed. a diffuser inner tube 210 provided with a plate 216; a diffuser outer tube 220 that is spaced apart to accommodate the diffuser inner tube 210 to form a downward flow path 222, and is provided so that the upper portion is closed by the upper plate 224; and a check valve 230 installed between the diffuser inner tube 210 and the diffuser outer tube 220 to open and close the downward flow path 222, and to apply a closing operating force by the elastic body 232; characterized.

At this time, it is characterized in that a plurality of second vortex plates 226 are provided inside the downward flow path 222 .

In addition, while the air blown out through the supply pipe 201 moves upward along the upward flow path 212, a primary vortex is generated by the first vortex plate 216, and is dispersed in all directions from the upper part of the diffuser inner tube 210. It is provided so that a second vortex is generated by the second vortex plate 226 while the direction is changed 180° and moves downward on the downward flow path 222, and the check valve 230 is the downward flow path 222 as the internal pneumatic pressure rises. It is characterized in that it is provided so as to repeat the circulation action in which the amount of dissolved oxygen is increased while being opened and the internal air is exhausted and wastewater is introduced from the outside and mixed with the air by the vortex.

In addition, the injection hole 201a of the air supply pipe 201 is formed higher than the lower end of the diffuser inner tube 210, the lower passage 214a is opened in the bottom plate 214, and the wastewater is passed through the lower passage 214a. It is characterized in that it is provided so that it is introduced into the diffuser inner cylinder 210 and discharged in a state in which a vortex is generated together with the air.

In addition, the internal cross-sectional area of the downward flow path 222 is formed smaller than the internal cross-sectional area of the upward flow path 212, and the flow velocity moving downward through the downward flow path 222 due to the difference in the internal cross-sectional area of the upper and lower flow paths 212 and 222 is reduced. It is characterized in that it is provided so as to increase the speed compared to the flow rate that moves upward through the upward flow path 212 .

In addition, it is characterized in that the lower end of the diffuser outer tube 220 is disposed higher than the lower end of the diffuser inner tube 210 .

In addition, the air supply pipe 201 is connected to an air generator 202 including a compressor and a blower, and the air supplied from the air generator 202 is intermittently adjusted in output by the control unit 203 for normal mode and washing. is configured to perform the mode, and the normal mode outputs the air generator 202 so that the wastewater rides the downward flow path 222 and partially backflows when the check valve 230 is opened by pneumatic in response to the water pressure of the wastewater. This is controlled, and the washing mode increases the output of the air generator 202 compared to the normal mode to discharge the accumulated sludge containing the wastewater that has flowed back into the diffuser inner cylinder 210 through the downward flow path 222 to the outside. characterized.

According to the above configuration and action, in the present invention, the primary and secondary vortices are generated while the air is switched 180° along the upper and lower flow passages by the combination of the inner tube and the outer tube. The high-concentration wastewater sludge can be efficiently treated by the filtration method, and in particular, the air supply pipe is protected in an unexposed state by the check valve, thereby preventing clogging and contamination by the high-concentration wastewater sludge.

1 is a block diagram showing the overall configuration of an aeration tank in which a diffuser without clogging of high-concentration wastewater sludge is installed according to an embodiment of the present invention;
2 is a block diagram showing the internal structure of a diffuser without clogging of high-concentration wastewater sludge according to an embodiment of the present invention;
3 is a block diagram showing the operating state of the diffuser without clogging of high-concentration wastewater sludge according to an embodiment of the present invention.
4 is a configuration diagram showing a state in which a lower flow path is formed on the bottom plate of the diffuser without clogging of high-concentration wastewater sludge according to an embodiment of the present invention.
5 is a configuration diagram showing the operating state of the diffuser without clogging of the high-concentration wastewater sludge of FIG. 4;
6 is a cross-sectional view showing the cross-sectional area of the upper and lower flow passages of the diffuser without clogging of the high-concentration wastewater sludge according to an embodiment of the present invention.
7 is a configuration diagram illustrating a state in which a normal mode and a washing mode are performed by the control unit in an unblocked diffuser of high-concentration wastewater sludge according to an embodiment of the present invention;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. And in the description of the present invention, if it is determined that the subject matter of the present invention may be unnecessarily obscured as it is obvious to those skilled in the art with respect to related known functions, the detailed description thereof will be omitted.

1 is a block diagram showing the overall configuration of an aeration tank in which a diffuser without clogging of high-concentration wastewater sludge is installed according to an embodiment of the present invention.

The present invention relates to a diffuser cylinder 200 without clogging of high-concentration wastewater sludge installed in the aeration tank 100, which is a combination of the diffuser inner tube and the diffuser outer tube, in which the air travels through the upper and lower flow paths and is converted 180° in the direction 1, Since the secondary vortex is generated, the oxidation action is highly activated, and high concentration wastewater sludge can be efficiently treated in a chemical-free and non-filtration method. In order to prevent contamination, the diffuser inner cylinder 210, the diffuser outer cylinder 220, and the check valve 230 are the main components.

At this time, the diffuser inner cylinder 210 is concentrically connected with the air supply pipe 201 to form an upward flow path 212 , and a plurality of first vortex plates 216 therein while the lower portion is closed by the bottom plate 214 . ) is provided. The diffuser inner cylinder 210 is formed in a cylindrical shape, and is supported in the longitudinal direction with the lower end connected to the supply pipe 201 .

In addition, the first vortex plate 216 is an inclined plate having different inclinations, and is spaced apart from each other in a zigzag form inside the diffuser inner tube 210, and the air discharged from the supply pipe 201 is moved along the upward flow path. It is provided so that a vortex is generated by the first vortex plate 216 . At this time, although the first vortex plate 216 shows a state in which the inclined plates are alternately arranged in FIG. 2 , the structure is not limited thereto and can be changed into a predetermined shape capable of generating a vortex including a spiral plate.

In addition, the diffuser outer cylinder 220 according to the present invention is provided so as to be spaced apart from each other to accommodate the diffuser inner tube 210 to form a downward flow path 222 , and to close the upper part by the upper plate 224 . The diffuser outer tube 220 is formed in a cylindrical shape having an inner diameter that is expanded compared to the outer diameter of the diffuser inner tube 210 , and the lower portion is opened to accommodate the diffuser inner tube 210 .

At this time, the upper plate 224 of the diffuser outer tube 220 has a cross-sectional shape of 'a' due to the difference in the size of the diffuser inner tube 210 and the inner diameter of the diffuser outer tube 220 and the outer diameter of the diffuser inner tube 210 as the diffuser inner tube 210 is spaced apart from the upper end. A female-shaped downward flow path 222 is formed.

In addition, the downward flow path 222 is formed to communicate with the upper end of the upward flow path 212 , and after the air passing through the upward flow path 212 rides the bottom surface of the upper plate 224 and disperses in all directions, the downward flow path 222 ) is moved downward and is provided so as to be aerated to the outside of the diffuser outer cylinder (220).

As such, by the combination of the diffuser inner tube 210 and the diffuser outer tube 220, the air travels through the upper and lower flow paths 212 and 222, and the vortex is generated as the direction is changed 180°, so the oxidation is highly activated and chemical-free; There is an advantage in that high-concentration wastewater sludge can be efficiently treated by a non-filtration method.

Meanwhile, the diffuser outer tube 220 is mounted on the air supply pipe 201 or the diffuser inner tube 210 by a connecting rod, and is supported to be maintained at a predetermined distance from the diffuser inner tube 210 .

On the other hand, the upper plate 224 protrudes downward in an inverted conical shape, and the air that has passed through the upward flow path 212 is quickly dispersed in all directions by the inverted conical structure of the upper plate 224 and moves to the edge of the diffuser outer tube 220 . The eddy current generation efficiency is improved.

In addition, the check valve 230 according to the present invention is installed between the diffuser inner tube 210 and the diffuser outer tube 220 to open and close the downward flow path 222, and is provided so that the closing operating force is applied by the elastic body 232. do. The check valve 230 is formed as a ring-shaped plate, is supported by a rod rod, moves in the vertical direction, and opens and closes the downward flow path 222 .

That is, the check valve 230 is installed to open and close the space between the outer circumferential surface of the diffuser inner tube 210 and the inner peripheral surface of the diffuser outer tube 220, and the direction of opening and closing the downward flow path 222 by the elastic body 232, that is, upward. It is provided to pressurize.

Accordingly, the down flow path 222 is opened by the operation of the check valve 230 only while air is supplied through the air supply pipe 201, and the down flow path 222 is opened by the check valve 230 at the moment when the air supply is stopped. is configured such that the closed operation prevents the high-concentration wastewater sludge from flowing back into the air supply pipe 201 through the downward flow path 222, and the air supply pipe 201 is connected to the diffuser inner tube 210 and the diffuser outer tube 220. It has the advantage of preventing clogging and contamination by high-concentration wastewater sludge as it is protected as unexposed by

At this time, a plurality of second vortex plates 226 are provided inside the downward flow path 222 . The second vortex plate 226 is an inclined plate, and is radially spaced apart from at least one of the outer circumferential surface of the diffuser inner tube 210 and the inner peripheral surface of the diffuser outer tube 220, and the air moving downward through the downward flow path 222 is induce a vortex. In this case, the second vortex plate 226 may be configured such that a vortex is generated in a direction opposite to the vortex direction by the first vortex plate 216 .

As such, the air ejected through the supply pipe 201 moves upward along the upward flow path 212 , and a primary vortex is generated by the first vortex plate 216 . And it is provided so that a secondary vortex is generated by the second vortex plate 226 while being dispersed in all directions from the upper part of the diffuser inner tube 210 and being rotated 180 degrees while moving downward along the downward flow passage 222 .

3 is a configuration diagram showing the operation state of the diffuser without clogging of the high-concentration wastewater sludge according to an embodiment of the present invention. It is provided to repeat the circulation action in which wastewater is introduced from the outside while being exhausted, mixed with air by a vortex, and discharged with an increased amount of dissolved oxygen.

4 is a configuration diagram showing a state in which a lower flow path is formed on the bottom plate of the diffuser cylinder without clogging of the high-concentration wastewater sludge according to an embodiment of the present invention. ) is formed high, and the lower flow path 214a is opened to the bottom plate 214 .

That is, the inner space of the diffuser inner cylinder 210 is opened to the outside by the lower flow path 214a, and at this time, the lower flow path 214a is disposed lower than the injection port 201a of the supply pipe 201, and is passed through the supply pipe 201. It is provided so that the pressure of the lower space of the diffuser inner cylinder 210 is lowered when air is sprayed.

In this way, when air is injected through the supply pipe 201, wastewater is forcibly introduced into the diffuser inner tube 210 through the lower flow path 214a as shown in FIG. As the mixing efficiency of wastewater and wastewater is improved, the amount of dissolved oxygen is increased and oxidation is highly activated.

6 is a cross-sectional view showing the cross-sectional area of the upper and lower flow passages of the diffuser without clogging of the high-concentration wastewater sludge according to an embodiment of the present invention. .

Accordingly, due to the difference in the inner cross-sectional area of the upper and lower flow paths 212 and 222, the flow rate moving downward along the downward flow path 222 is provided to increase compared to the flow rate moving upward through the upward flow path 212, so that air and wastewater The mixing efficiency of air and wastewater is further improved because a moving shock that increases the flow rate is not applied while it is moving while generating a vortex.

In addition, the lower end of the diffuser outer tube 220 is disposed higher than the lower end of the diffuser inner tube 210 . This is that the air supplied to the diffuser inner tube 210 moves upward through the upward flow path 212 by buoyancy, and then is turned 180° and moves downward along the downward flow path 222, reaching the lower end of the diffuser outer tube 220 first. Thus, as the air is exhausted to the outside, the reverse flow of air through the lower flow path 214a is prevented.

7 is a configuration diagram illustrating a state in which the air supply cylinder without clogging of the high concentration wastewater sludge according to an embodiment of the present invention performs a normal mode and a washing mode by the control unit, wherein the air supply pipe 201 includes a compressor and a blower It is connected to the air generator 202, and the air supplied from the air generator 202 is configured to perform a normal mode and a washing mode while the output is intermittently controlled by the control unit 203.

Here, in the normal mode, as shown in FIG. 7 (a), when the check valve 230 is opened by pneumatic in response to the water pressure of the wastewater, the wastewater rides the downward flow path 222 and partially reverses the air generator 202. The output is controlled. Accordingly, the check valve 230 is opened and air is exhausted, and at the same time wastewater is introduced from the outside, and the wastewater is mixed by air and vortex, and the circulation action is repeated in which the amount of dissolved oxygen is increased and discharged.

In addition, the washing mode increases the output of the air generator 202 compared to the normal mode as shown in FIG. 7(b), and discharges the accumulated sludge including the wastewater that has flowed back into the diffuser inner tube 210 through the downward flow path 222 to the outside. The inner space of the diffuser inner cylinder 210 and the diffuser outer cylinder 220 are periodically automatically cleaned to enable continuous operation for a long time without stopping, and clogging and contamination by high-concentration wastewater sludge are prevented.

As described above, in the detailed description of the present invention, the most preferred embodiment of the present invention has been described, but various modifications are possible within the scope not departing from the technical scope of the present invention. Therefore, the protection scope of the present invention is not limited to the above embodiments, but the protection scope should be recognized from the techniques of the claims to be described later and equivalent technical means from these techniques.

100: aeration tank
200: air cylinder 201: air supply pipe 201a: nozzle
202: air generator 203: control unit
210: inner tube 212: upward flow path 214: bottom plate
214a: lower flow path 216: first vortex plate
220: outer cylinder 222: downward flow 224: upper plate
226: second vortex plate
230: check valve 232: elastic body

Claims (3)

The air supply pipe 201 and the air supply pipe 201 are concentrically connected to form an upward flow path 212 , and the lower part is closed by the bottom plate 214 and the diffuser inner tube 210 having a plurality of first vortex plates 216 therein. ;
a diffuser outer tube 220 that is spaced apart to accommodate the diffuser inner tube 210 to form a downward flow path 222, and is provided so that the upper portion is closed by the upper plate 224;
a check valve 230 installed between the diffuser inner tube 210 and the diffuser outer tube 220 to open and close the downward flow path 222, and to apply a closing operating force by the elastic body 232;
is included,
The internal cross-sectional area of the downward flow path 222 is formed smaller than the internal cross-sectional area of the upward flow path 212, and the flow velocity moving downward through the downward flow path 222 due to the difference in internal cross-sectional area of the upper and lower flow paths 212 and 222 is the upward flow path. A clog-free diffuser of high-concentration wastewater sludge, characterized in that it is provided to increase the speed compared to the flow rate moving upward by riding (212).
The method according to claim 1,
A plurality of second vortex plates 226 are provided inside the downward flow path 222 , and the air blown out through the supply pipe 201 travels upward along the upward flow path 212 to the first vortex plate 216 . The primary vortex is generated by the vortex, and the second vortex is generated by the second vortex plate 226 while being dispersed in all directions from the upper part of the diffuser inner tube 210 and being turned 180° and moving downward along the downward flow path 222. is provided, and the check valve 230 is opened due to an increase in the internal pneumatic pressure of the downward flow path 222, and at the same time the internal air is exhausted, wastewater flows in from the outside and is mixed with the air by a vortex and discharged with an increased amount of dissolved oxygen A clog-free diffuser of high-concentration wastewater sludge, characterized in that it is provided to repeat the circulation action.
The method according to claim 1,
The air supply pipe 201 is connected to an air generator 202 including a compressor and a blower, and the air supplied from the air generator 202 is intermittently adjusted in output by the control unit 203 to perform a normal mode and a washing mode. In the normal mode, when the check valve 230 is opened by pneumatic in response to the water pressure by the wastewater, the output of the air generator 202 is controlled so that the wastewater rides the downward flow path 222 and partially flows backward. In the washing mode, the air generator 202 output is increased compared to the normal mode to discharge the accumulated sludge containing the wastewater backflowed into the diffuser inner tube 210 through the downward flow path 222 to the outside. Unobstructed aerators of high-concentration wastewater sludge.

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