KR101598007B1 - Apparatus for separating solid and liquid using micro-bubble - Google Patents

Abstract

The present invention relates to an apparatus for separating a solid from a liquid using micro-bubbles capable of separating a waste material from solid and liquid waste water stored in a storage tank. The apparatus comprises: a hollow tubular body whose upper end is exposed above an upper surface of the waste water, and where the waste water flows in through the bottom; a micro-bubble generator installed inside the body to be submerged in the waste water flowing in and generating micro-bubbles; and a discharge pipe connected to the upper end of the body exposed above an upper surface of the waste water, through which a waste material passes with bubbles made from the micro-bubble generator, and having a minimized pass cross section in a direction of advancing the waste material. According to the present invention, the apparatus for separating a solid from a liquid using micro-bubbles is designed to discharge micro-bubbles in contact with a waste material by a self levitation force, thereby omitting a process of separating the micro-bubbles from waste water, and generating more fine and dense micro-bubbles.

Description

[0001] The present invention relates to a micro-bubble solid-

More particularly, the present invention relates to a micro bubble solid-liquid separator for separating and purifying wastes from wastewater discharged from a public sewage treatment plant, an ecological river, a water purification plant, an industrial facility, a sewage recycling apparatus, And a micro bubble solid-liquid separator.

In recent years, as the industry has become more sophisticated and larger, a large amount of pollutants are discharged in the form of wastewater in the industry, and water quality and soil pollution are becoming serious.

Especially, in the case of livestock wastewater generated in the livestock industry, if the water supply source of the constant water flows into the reservoir which is used in an untreated state, it may cause eutrophication of the reservoir and cause various diseases.

Accordingly, the importance of wastewater treatment for removing harmful substances and pollutants in wastewater discharged from industrial facilities has been emphasized, and various wastewater treatment methods have been proposed.

Generally, wastewater treatment methods are classified into solid liquid separation method, physico-chemical treatment method, and biochemical treatment method, and the appropriate wastewater treatment method is applied according to the kinds and characteristics of the pollutants contained in the wastewater.

However, in the case of industrial wastewater or livestock wastewater containing degradable pollutants, it is difficult to purify only by a single-stage wastewater treatment process.

Accordingly, recently, a method of combining a biochemical treatment process and a physicochemical treatment process has been proposed.

In the above method, the wastewater is primarily subjected to a filtration treatment using a natural ecosystem such as soil and plant, followed by a physico-chemical treatment step, and then a biodegradable material or fine contaminant that has not been removed during the filtration treatment is subjected to a physico- .

At this time, a representative one of physico-chemical treatment methods is Dissolved Air Flotation (DAF).

The dissolved air flotation method refers to a technique of collecting and removing the microbubbles when the microbubbles generated by the coagulant and the coagulation assistant are injected into the wastewater and the microbubbles generated in the microbubbles come into contact with the contaminants in the wastewater.

Such a dissolved air flotation method can be carried out with a small processing facility area and a simple facility, and has a merit that a relatively high purification treatment efficiency can be obtained.

In particular, the dissolved air flotation method (DOF, Dissolved Ozone Flotation) using ozone is a technique for generating and spraying microbubbles by injecting ozone into ozone, It is a wastewater treatment method that can obtain the sterilization effect and the floating matter removal effect by air floating at the same time.

As a related art, Korean Patent Registration No. 10-0799938 is disclosed. Herein, the ozone generator is injected into the flocculation reaction tank containing the contaminated water to generate dissolved ozone bubbles by injecting air and ozone in the air, and the dissolved ozone bubbles and flocks in the contaminated water are stirred to float, And a water treatment apparatus for separating and removing a dissolved ozone bubble and a floc.

However, in the conventional water treatment apparatus, a separate flotation tank is provided in order to remove dissolved ozone bubbles floating in contact with the fl ow, and further separation process is required. This not only requires additional equipment but also wastewater treatment time.

Also, in such a water treatment apparatus, if the generated particles of the dissolved ozone bubbles are not fine, a sufficient contact area with the flocs can not be ensured and the removal efficiency of the flocs can be lowered.

In addition, the water treatment apparatus does not provide an environment for such a chemical reaction in causing a reaction of oxidizing and decomposing the flocs using the dissolved ozone bubbles.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a micro bubble solid-liquid separator which can be installed at a small scale, simplify a wastewater treatment process, and improve purification efficiency.

According to an aspect of the present invention, there is provided a micro bubble solid-liquid separator for separating waste materials from high-volume wastewater stored in a storage tank and having an upper end exposed on an upper surface of the wastewater, A hollow tubular body; A micro bubble generator installed inside the body so as to be submerged in the wastewater; And a discharge pipe connected to an upper end of the body exposed on the upper surface of the wastewater and having a passage cross section reduced along the traveling direction of the wastes, the wastes passing through the bubbles generated by the micro bubble generator.

Wherein the bubble generator includes an air flow path for injecting air supplied from the outside, and a bubble generator for supplying bubbles to the bubble generating gas, And an injector for generating and injecting microbubbles, and a collision device disposed on a path of the microbubbles injected from the injector, wherein the microbubbles collide with each other to change the traveling direction of the microbubbles A bomb dividing portion formed to extend from the first impact portion in a skirt shape in the direction of the injector and passing the bubbles proceeding from the first impact portion to divide the bubble, The bubbles are separated from the bubble division part and are provided so as to face the bubble division part, And second impact portion, and the air supply line 250 for supplying air to said air flow, may include a gas supply line for supplying gas to said gas flow.

The bubble generating gas is preferably ozone.

The bubble dividing portion may include a mesh extending from the first impact portion and having a plurality of through holes for dividing the bubble passing through the first impact portion by the through hole and dividing the mesh by one end connected to the mesh, And a plurality of support frames that are seated on the injector and fix the mesh to be spaced apart from the injector.

Also, the second impact portion may be a parabola shape.

Further, it is preferable that the discharge pipe is made of a transparent material so that the waste discharged together with the bubble can be visually confirmed.

In addition, at least one discharge hole may be formed along the circumferential direction of the upper end of the body exposed above the upper surface of the wastewater, directly below the discharge pipe, so that a part of the wastewater returns to the storage tank.

According to the micro-bubble solid-liquid separator according to the present invention, since the micro bubble in a state of being in contact with a waste material is designed to be discharged by the self-lifting force, the step of separating the microbubble from the waste water can be omitted.

Also, as the inflow of wastewater, the treatment of water and the discharge of the pollutants are made in the vertical direction, the space occupied by the space can be minimized.

Further, the micro bubble generator used in the present invention is designed so that the bubble injected from the injector passes through the bubble division part, so that it is possible to generate microbubbles with finer and higher density. Accordingly, the efficiency of contact between the microbubbles and the wastes in the wastewater can be increased, and a more effective wastewater purification operation can be performed.

In addition, since the generated micro bubble is caused to collide with the first impact portion and the second impact portion, it is possible not only to diffuse the generated micro bubble evenly distributed over the entire wastewater contained in the body, but also to cause explosion of the bubble due to the impact, It can be chemically decomposed.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a state diagram showing a state in which a micro bubble solid-liquid separator according to the present invention is installed in a storage tank,
2 is a perspective view of a micro bubble solid-liquid separator according to the present invention,
3 is a cross-sectional view of the micro-bubble solid-liquid separator shown in Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately The present invention should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention, and not all of the technical ideas of the present invention are described. Therefore, at the time of the present application, It should be understood that variations can be made.

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

2 is a perspective view of a microbubble solid-liquid separation apparatus 10 according to the present invention, and FIG. 2 is a perspective view of a micro bubble solid-liquid separator 10 according to the present invention. 3 is a cross-sectional view of the micro-bubble solid-liquid separator 10 shown in Fig. 2

 1 to 3, a micro bubble solid-liquid separator (hereinafter, referred to as a "solid-liquid separator") 10 according to an embodiment of the present invention is installed in a reservoir R containing wastewater in a liquid state, A micro bubble generator 200 and a discharge pipe 300 are provided for separating the waste water from the wastewater by generating and spraying microbubbles in the wastewater. Respectively. Here, the wastewater can be exemplified as wastewater discharged from a public sewage treatment plant, an ecological river, a water purification plant, an industrial facility, a sewage recycling apparatus, a reservoir, and the like, but is not limited thereto.

The body 100 has a hollow tube shape. At this time, as shown in FIG. 1, the body 100 is exposed on the upper surface of the wastewater, and the wastewater flows through the lower end. At this time, it is preferable that the upper end of the body 100 is opened so that it can be visually recognized that the waste materials together with the bubbles are discharged to the discharge pipe 300 to be described later. In addition, at least one discharge hole 110 may be formed in the body 100 along the circumferential direction immediately below the branching position of the discharge pipe 300. At this time, it is preferable that a part of the wastewater flowing into the body 100 through the discharge hole 110 is discharged into the reservoir R and is returned.

The micro bubble generator 200 is installed inside the body 100 and is installed so as to be submerged in the wastewater introduced as described above. The micro bubble generator 200 may include an injector 210, a first impact portion 220, a bubble dividing portion 230, a second impact portion 240, an air supply line 250, and a gas supply line 260 ).

인 초미세 크기의 마이크로 버블(Mico-bubble)인 것이 바람직하다. 또한 상기 에어로는 질소, 산소 및 탄소가스 등으로 구성된 대기기체가 예시될 수 있으나, 이에 한정하는 것은 아니다. 또한 상기 기체는 산화력이 높은 오존(Ozone)인 것이 바람직하나, 이 외에도 산화력을 갖는 다른 기체가 예시될 수 있다. 이때 상기 인젝터(210)는 외부에서 공급된 에어(Air)의 분사를 위한 에어유동로(211)와, 그 출구단에서 외부에서 공급된 버블 발생용 기체가 상기 에어유동로(211)의 에어와 합류하도록 상기 에어유동로(211)부터 분기된 기체유동로(212)가 각각 형성된다. 여기서 상기 에어유동로(211)는 상기 에어가 인입되는 입구단에서 상기 에어가 토출되는 출구단으로 갈수록 직경이 감소되는 것이, 상기 에어의 유속을 높이는 것에 유리하다. At this time, the injector 210 injects air and gas into the wastewater, thereby creating a bubble in which the air and gas are contained. Here, the bubbles generated in the injector 210 have a diameter of 10 to 100

It is preferable that the micro-bubble is a micro-sized micro-bubble. Also, the aerosol may be atmospheric gas composed of nitrogen, oxygen, carbon gas or the like, but is not limited thereto. Further, the gas is preferably ozone having high oxidizing power, but other gases having oxidizing power may be exemplified. At this time, the injector 210 includes an air flow path 211 for injecting air supplied from the outside, and a bubble generating gas supplied from the outside at the outlet end of the bubble generating gas to the air of the air flow path 211 A gas flow path 212 branched from the air flow path 211 is formed so as to be joined. Here, it is advantageous to increase the flow rate of the air by decreasing the diameter of the air flow path 211 toward the outlet end at which the air is discharged from the inlet end at which the air is introduced.

The first impact portion 220 is disposed on the path of the bubbles injected from the injector 210 and collides with the bubbles to change the traveling direction of the bubbles. At this time, the first impact portion 220 converts the traveling direction of the bubble toward the second impact portion 230 to be described later.

The bubble division part 230 is formed to extend in a skirt shape from the first impact part 220 toward the injector 210. At this time, the bubble division unit 230 divides the bubble by passing a bubble going from the first impingement unit 220. The bubble division part 230 extends from the first impingement part 220 and has a plurality of through holes for passing the bubbles from the first impingement part 220 through the through holes to divide the bubbles And a plurality of support frames 232 which are connected to the mesh 231 and the other end is seated on the injector 210 to fix the mesh 231 to be spaced apart from the injector 210 .

The second impact portion 240 is spaced from the bubble dividing portion 230 and is disposed to face the bubble dividing portion 230. At this time, the bubbles traveling from the bubble divider 230 collide with the second impact portion 240 and re-convert the traveling direction. At this time, the second impact portion 240 preferably has a parabolic shape. The second impact portion 240 may collide with bubbles traveling from the bubble division portion 230. Therefore, the radius of the second impact portion 240 may be smaller than the radius of the bubble division portion 230, Of the mesh 231 of FIG. A part of the bubbles to be moved may float in contact with the waste material contained in the wastewater, and the other part may collide with the first impact part 220 and the second impact part 230 and may explode. , It is preferable that the bubble to be exploded as described above applies an impact force generated by the explosion to the waste material to decompose the waste material. More specifically, it is preferable to decompose by cleaving a molecular ring of a scavenger which constitutes an organic compound structure. Further, the bubbles can be removed by introducing the ozone contained in the explosion into the wastewater and oxidizing the wastes.

The air supply line 250 may supply an external atmosphere gas to the air flow path 211. The gas supply line 260 preferably supplies the bubble generating gas to the gas flow path 212. The air supply line 250 and the gas supply line 260 may be connected to the injector 210 through a lower end of the body 100.

The discharge pipe 300 is connected to the upper end of the body 100 exposed on the upper surface of the wastewater. At this time, the waste pipe 300 passes through the waste material together with the bubble formed in the microbubble generator 200. Here, it is preferable that the waste material is discharged while being in contact with the bubble. Further, it is preferable that the bubbles reach the position of the discharge pipe 300 by self-lifting force and are discharged. The discharge pipe (300) has a reduced cross section along the traveling direction of the waste. This is intended to increase the inflow speed of the bubbles and the waste to the discharge pipe 300 by narrowing the inflow passage of the bubbles and the pollutants. 3, the discharge pipe 300 includes a funnel 310 connected to the upper end of the body 100 and a hose 320 fitted to the upper end of the funnel 310 desirable. At this time, the funnel 310 and the hose 320 are made of a transparent material, and it is preferable that the user can visually check the waste discharged together with the bubbles. Also, the discharge pipe (300) may include a waste collection unit connected to the hose (320) to collect and discharge the discharged bubbles and waste materials.

According to the solid-liquid separator 10 of the present invention as described above, since the micro bubble in a state of being in contact with the waste material is designed to be discharged by the self floating force, the step of separating the microbubble from the waste water can be omitted have.

Also, as the inflow of wastewater, the treatment of water and the discharge of the pollutants are made in the vertical direction, the space occupied by the space can be minimized.

In addition, the micro bubble generator 200 used in the present invention is designed so that the bubble injected from the injector 210 passes through the bubble dividing section 230, so that microbubbles having a finer and higher density can be generated. Accordingly, the efficiency of contact between the microbubbles and the wastes in the wastewater can be increased, and a more effective wastewater purification operation can be performed.

In addition, the generated micro bubbles can be made to collide with the first impact portion 200 and the second impact portion 230 so that the micro bubbles can be diffused so as to be evenly distributed throughout the wastewater contained in the body, And can chemically decompose the waste materials.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

R: Storage tank 10: Micro bubble
100: Injector 110: Discharge hole
200: micro bubble generator 210: injector
220: first impact portion 230: bubble division portion
231: mesh 232: support frame
240: second impact portion 250: air supply line
260: gas supply line 300: discharge pipe
310: funnel 320: hose

Claims (7)

And separating the waste from the wastewater stored in the storage tank in a high liquid level,
A hollow tubular body detachably installed in the storage tank and having an upper end exposed on an upper surface of the wastewater and having the lower end thereof to receive the wastewater;
And an air flow path for blowing air supplied from the outside and a bubble generating gas supplied from the outside at an outlet end of the bubble generating gas are supplied to the inside of the body, An injector in which a gas flow path branched from the air flow is formed so as to join with the air in the air flow path and which generates and emits micro bubbles; A first impact portion extending in a skirt shape from the first impact portion in the direction of the injector and having a plurality of through holes to advance from the first impact portion toward the first impact portion, The mesh having one end connected to the mesh and the other end connected to the mesh, And a plurality of support frames which are seated on the ejector and fix the mesh to the injector so as to be spaced apart from each other, and a plurality of support frames spaced apart from the bubble divisional part and provided so as to face the bubble divisional part, And a gas supply line for supplying gas to the gas flow path; and a gas supply line for supplying air to the gas flow path; And
And a micro bubble generator connected to the upper end of the body exposed on the upper surface of the wastewater and passing through the microbubble generator together with the bubbles generated therein and having a passage cross- Liquid separator. delete The method according to claim 1,
Characterized in that the bubble generating gas is ozone. delete The method according to claim 1,
And the second impact portion has a parabola shape. The method according to any one of claims 1, 3, and 5,
Wherein the discharge pipe is made of a transparent material so that the waste material discharged together with the bubble can be visually confirmed. The method according to any one of claims 1, 3, and 5,
Wherein at least one discharge hole is formed in the lower portion of the upper end of the body exposed above the upper surface of the wastewater along a circumferential direction of the discharge pipe so that a part of the wastewater returns to the storage tank.

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