KR101206667B1 - Flotation system in river - Google Patents

Abstract

PURPOSE: A floatation system in water supply is provided to improve the stability of a microbubble generating operation by including a plurality of blades which rotates by flowing water through a conduit. CONSTITUTION: A floatation system includes a reactor(10), a discharging type ozone generator(302), a microbubble generator(100), a floatation bath(20), and a conduit(18). The reactor receives and drains water to be treated. The microbubble generator receives converted ozone and generates microbubbles containing the ozone. The floatation bath generates a reaction between the water to be treated and the microbubbles containing the ozone and floats pollutants on the surface of water to be removed. The conduit is the path of the water to be treated. The microbubble generator is installed in the conduit.

Description

Flotation Separation System in Water Supply System {FLOTATION SYSTEM IN RIVER}

The present invention relates to a flotation separation system at a water supply.

As a technique for removing algae from a water supply source, a flotation separation water treatment system may be used.

A conventional flotation separation water treatment system will be described with reference to FIG. 1.

Referring to FIG. 1, conventionally, in order to treat contaminants in contaminated water, an air compressor 51, a pressure stirring tank 52, a circulating water pump 53 together with an agglomeration reaction tank 10 and a floating separation tank 20. ), Dissolved air flotation equipment is used to generate fine bubbles by floating the contaminants in the contaminated water by essentially using the micro bubble generating equipment composed of a plurality of mechanical devices such as the pressurized water injection device 54. However, such a technique is made up of a large number of related machinery, so that the size of the facility is large and the generation of the microbubble generator is not efficient.

According to one or more exemplary embodiments of the present inventive concept, a flotation separation system in a water source is provided stably and economically by generating micro bubbles stably in large quantities.

According to one embodiment of the invention, in the floating separation system in the water source,

A reactor for receiving and discharging treated water;

A discharge ozone generator for converting oxygen in the air into ozone;

A micro bubble generator that receives ozone converted by the discharge ozone generator and generates ozone-containing micro bubbles containing ozone;

The contaminant is received by receiving the treated water discharged by the reaction tank, receiving the ozone-containing microbubble generated by the microbubble generator, and reacting the treated water received from the reactor with the ozone-containing microbubble. Floating separation tank to remove the floating on the surface;

It includes; a pipeline for receiving a portion of the treated water discharged by the flotation separation tank, and provides a path through which the inflow of the treated water flows to the flotation separation tank;

The micro bubble generator is located in the conduit,

The micro bubble generator,

(a) a gas injection tube having a tubular shape receiving ozone converted by the discharge ozone generator;

(b) a plurality of blades coupled to surround the outside of the gas injection tube and rotatable independently of the gas injection tube, each of the plurality of blades extending horizontally in a radial direction in the gas injection tube; Said plurality of blades comprising a portion and a vertical downward portion that is bent downward at the end of the extension and directed vertically downward;

(c) a cylindrical chamber composed of an upper surface, a side surface, and a lower surface coupled to an end of the gas injection tube, positioned below the plurality of blades, and having a through hole formed in the center of the upper surface of the chamber and passing through the chamber; The chamber, wherein an end of the gas injection tube is coupled to a sphere via a bearing, the side of the chamber including a plurality of openings, the porous sintering filter attached to each of the openings; And

(d) a motor located below the chamber, wherein the motor can rotate the chamber by connecting a drive shaft of the motor to a center of a lower surface of the chamber;

The interior of the gas injection tube is empty so that the ozone can move to the chamber,

Air introduced into the chamber through the gas injection pipe is discharged into the water through the filter by the rotation of the chamber,

The horizontally extending portion is spaced apart in parallel with the upper surface of the chamber,

The vertically downward portion is spaced apart in parallel to the side of the chamber,

Each of the plurality of blades is coupled to the blades for rotating the plurality of blades in one direction,

The motor is controlled such that the rotational direction of the chamber is opposite to the rotational direction of the blade,

The wing of the microbubble generator is provided by the treated water flowing in the conduit, so that the microbubble generator is installed in the conduit so that the plurality of blades are rotated, there is provided a floating separation system in the water supply. .

According to one or more exemplary embodiments of the present inventive concept, by generating microbubbles stably in large quantities, it is possible to stably and economically improve the flotation separation system in a water source.

1 is a view for explaining a conventional floating separation system,
2 is a floating separation system in a water supply source according to an embodiment of the present invention,
3 is a schematic perspective view of a micro bubble generator (MBG) according to an embodiment of the present invention,
4 is a cross-sectional view of a connecting portion according to an embodiment of the present invention;
5 is a cross-sectional view of the chamber 130 according to an embodiment of the present invention,
6 is a schematic side view of a micro bubble generator (MBG) according to an embodiment of the present invention;
FIG. 7 is an enlarged view of a portion A in FIG. 6.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features, and advantages of the present invention will become more readily apparent from the following description of preferred embodiments with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. Rather, the embodiments disclosed herein are provided so that the disclosure can be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

In this specification, when an element is referred to as being on another element, it means that it can be formed directly on the other element, or a third element may be placed therebetween.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. As used in the specification, 'comprises' and / or 'comprising' does not exclude the presence or addition of one or more other components in addition to the components mentioned.

In this specification, the expression 'connected' with one component to another component means not only a direct connection between the components, but also includes an indirect connection through another third component.

Hereinafter, the present invention will be described in detail with reference to the drawings. In describing the following specific embodiments, various specific details are set forth in order to explain and understand the invention in more detail. However, those skilled in the art can understand that the present invention can be used without these various specific details. In some instances, it should be noted that portions of the invention that are well known in the description of the invention and are not significantly related to the invention do not describe confusion in describing the invention.

2 is a view for explaining a fine dissolved floating separation system in the water supply according to an embodiment of the present invention.

In the floating separation system of a water source according to an embodiment of the present invention, ozone contains a reaction tank 10 for receiving and stirring the water to be treated from a water supply source or a stream, and the water to be discharged from the reaction tank 10. The floating separation tank 20 for contacting and reacting with the microbubbles ('ozone-containing microbubble') to float and remove contaminants on the surface of the water, and an air inlet pipe 301 into which air in the air flows are mounted. The ozone generated from the ozone generator 302 and the discharge type ozone generator 302 which generate ozone (O3) by the electrical reaction of the discharge tube with oxygen (O2) in the air while passing through the supplied air, and receives the ozone A microbubble generator 100 (hereinafter referred to as 'MBG') that produces a containing microbubble.

The reactor 10 may be administered a suitable compound according to the degree of contamination of the water to be treated.

Pipe line 18 receives a portion of the treated water discharged by being treated by the flotation separation tank 20, and provides a path to move to the flotation separation tank 20 through the injection device (400).

MBG 100 is installed in the conduit 18 (refer FIG. 3).

The power supply unit (not shown) may supply power to the MBG 100 through the power supply line 450, and may control the rotation direction of the motor (described later) included in the MBG 100.

On the other hand, the contents disclosed in Korean Patent Laid-Open Publication No. 2002-0090780 are combined as part of the present specification without departing from the content of the present specification.

3 is a schematic perspective view of a micro bubble generator (MBG) 100 for generating ozone containing micro bubbles according to one embodiment.

Referring to FIG. 3, the MBG 100 may be installed in the conduit 18, and may include a gas injection tube 400, a blade unit 120, a chamber 130, and a driver 140.

The gas injection tube 400 is a circular tube for injecting gas (for example, ozone) to the chamber 130 side by a pump (not shown). In the illustrated embodiment, the gas injection pipe 400 is in the shape of a hollow circular pipe and is installed to penetrate the chamber 130 and the connection portion 121. A bearing 111 is interposed between the gas injection pipe 400 and the connection part 121, so that the rotation of the connection part 12 does not affect the gas injection pipe 400.

In this embodiment, the central axis of the gas injection pipe 400 and the protrusion 131 of the chamber are aligned with each other.

The gas injection pipe 400 has a shape of a pipe through which gas flows, and the gas flowing in the gas injection pipe 400 is pressurized to move in the direction of the chamber 130.

The blade unit 120 is coupled to surround the outside of the gas injection pipe 400 and is a member that rotates independently of the gas injection pipe 400. The blade part 120 may include a connection part 121 and a plurality of blades 122. The connection part 121 is a cylindrical member surrounding the outside of the gas injection pipe 400, and a plurality of blades 122 are connected to the connection part 122, which is a cylindrical member, at a predetermined interval along the side of the connection part 122 in a radial direction. Attached.

Each blade 122 extends in the radial direction at the connecting portion 121 and the blade 129 is suspended, so that the blade 122 rotates when the blade 129 is rotated by the flow rate.

One end of the blade 122 is attached to the connecting portion 121 and extends substantially horizontally in a radially outward direction therefrom, and is bent downward so that the other end thereof faces vertically downward.

Specifically, the blade 122 is a horizontal extension portion extending horizontally in the radial direction from the connecting portion 121 surrounding the gas injection pipe 400, and bent downward at the end of the extension portion is directed vertically downward It includes a vertical downward portion, wherein the horizontal extension portion is positioned in parallel with a predetermined distance spaced apart from the upper surface of the chamber 130 to be described later, the vertical downward portion is positioned parallel to the side surface of the chamber 130.

The chamber 130 is a member rotatably coupled to the lower end of the gas injection tube 400, and may include a protrusion 131, a body 132, and a filter 133.

The main body 132 of the chamber is hollow, and is a cylindrical member composed of an upper surface, a side surface, and a lower surface. The diameter of the chamber 130 is slightly smaller than the diameter of the blade portion 120. That is, when the chamber 130 is coupled to the rotational axis P1, a portion of the blade 122 facing downward is spaced apart from the side surface of the chamber 130 by a predetermined distance.

At the center of the upper surface of the chamber 130, the protrusion 131 is formed to protrude from the upper surface. The protrusion 131 has a vertical through hole formed therein, and the gas injection pipe 400 penetrates the protrusion 131. A bearing is interposed between the gas injection pipe 400 and the protrusion 131, so that the chamber 130 rotates around the gas injection pipe 400.

A plurality of openings are formed in the side surface of the chamber 130 at predetermined intervals, and a filter 133 is attached to each opening. In a preferred embodiment, the filter 133 may be a porous sintered filter, and thus may be microbubbles when gas passes through one side of the filter 133 and may be discharged from the other side of the filter 133. The filter 133 may be made of a material (eg, stainless steel or resin) including a micro path through which gas can pass.

The driving unit 140 is disposed below the chamber 130. The driving unit 140 includes a motor 142 and a drive shaft 141. One end of the drive shaft 141 is connected to the rotation shaft of the motor 142 and the other end is coupled to the center of the lower surface of the chamber 130. Thus, the chamber 130 is rotated by the motor 142.

4 is a cross-sectional view of a connection unit according to an embodiment of the present invention.

As shown in FIG. 4, a bearing 111 is interposed between the gas injection pipe 400 and the connection part 121 such that the rotation of the connection part 12 does not affect the gas injection pipe 400.

5 is a cross-sectional view of the chamber 130 according to one embodiment. Referring to FIG. 5, the protrusion 131 of the chamber 130 is coupled to the lower end of the gas injection pipe 400 through a bearing 134. Since the chamber 130 is rotatably coupled to the gas injection tube 400, the chamber 130 may rotate by receiving a driving force from the driving shaft 141 about the gas injection tube 400.

Meanwhile, gas is discharged from the lower end of the gas injection tube 400 to fill the inside of the body 132 of the chamber 130. When the pressure of the gas rises above a certain level, the gas is discharged to the outside (water in the river) through the filter 133. At this time, the gas passing through the filter 133 is discharged into the water in the form of micro bubbles. Furthermore, since the chamber 130 is rotated in the direction opposite to the rotation direction of the blade, micro bubbles can be easily generated.

6 is a schematic side view of a state in which the above-described MBG 100 is disposed in the conduit 18 according to one embodiment.

Referring to FIG. 6, it can be seen that the gas injection pipe 400 penetrates the connection part 121 and is connected to the chamber 130. The blade portion 120 is coupled to the connection portion 121, and a chamber 130 is rotatably coupled to the gas injection pipe 400 below. The chamber 130 is driven by the motor 142 and may rotate independently of the rotational direction of the blade 122 (preferably in the opposite direction). In FIG. 6, for convenience of description, the blade 139 in FIG. 3 is omitted. As shown in FIG. 6, each blade 122 is positioned close to the filter 133 so that the bubbles exiting through the filter 133 may be generated by the blade 122 into further finer bubbles. will be.

7 is an enlarged view of a portion A in FIG. 6.

In the preferred embodiment, while the chamber 130 is rotated by the driving unit 140, the gas in the chamber 130 is rotated under pressure according to the continuous gas supply from the gas injection pipe 400, and thus the filter 133. ) Is discharged into the water in the form of micro bubbles (MB). At this time, since the chamber 130 is being rotated, the microbubble may be broken down by the flow of river water around the moment when it is discharged through the filter 133 and may be broken down to a smaller size.

Since the side of the main body 132 of the chamber 130 and the vertically downward portion of the blade 122 are located adjacent to each other, the microbubble hits the blade 122 immediately after being discharged into water, Can be cut back. In this case, the larger the relative rotational speed of the chamber 130 and the blade 122, the finer the microbubble will be cut. That is, according to one embodiment, the relative rotation speed can be increased by rotating the chamber 130 in the opposite direction to the rotation direction of the blade 122.

The wing 129 is rotated by the flow of water flowing in the conduit 18, thereby rotating the blade 122. Referring to FIG. 3, the shape of the blade 129 is configured in a ladle shape (with recesses) such that the blade 122 is rotated in a specific direction (counterclockwise (ccw)). In this case, although not shown, the power supply (not shown) through the power supply line 450 supplies power to the motor 142 so that the chamber 130 rotates clockwise (cw). That is, in FIG. 1, a power source (not shown) that provides power to the microbubble generator 100 through the power supply line 450 may have a rotation direction of the chamber 130 opposite to a rotation direction of the blade 122. The motor 142 is controlled.

While the present invention has been described with reference to the particular embodiments and drawings, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. This is possible. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the equivalents of the claims, as well as the claims.

100: microbubble generator
120: blade portion
130: chamber 140: drive unit

Claims (1)

In the floating separation system at the water source,
A reactor for receiving and discharging treated water;
A discharge ozone generator for converting oxygen in the air into ozone;
A micro bubble generator that receives ozone converted by the discharge ozone generator and generates ozone-containing micro bubbles containing ozone;
The contaminant is received by receiving the treated water discharged by the reaction tank, receiving the ozone-containing microbubble generated by the microbubble generator, and reacting the treated water received from the reactor with the ozone-containing microbubble. Floating separation tank to remove the floating on the surface;
It includes; a pipeline for receiving a portion of the treated water discharged by the flotation separation tank, and provides a path for the inflow of the treated water to move to the flotation separation tank;
The micro bubble generator is located in the conduit,
The micro bubble generator,
(a) a gas injection tube having a tubular shape receiving ozone converted by the discharge ozone generator;
(b) a plurality of blades coupled to surround the outside of the gas injection tube and rotatable independently of the gas injection tube, each of the plurality of blades extending horizontally in a radial direction in the gas injection tube; Said plurality of blades comprising a portion and a vertical downward portion that is bent downward at the end of the extension and directed vertically downward;
(c) a cylindrical chamber composed of an upper surface, a side surface, and a lower surface coupled to an end of the gas injection tube, positioned below the plurality of blades, and having a through hole formed in the center of the upper surface of the chamber and passing through the chamber; The chamber, wherein an end of the gas injection tube is coupled to a sphere via a bearing, the side of the chamber including a plurality of openings, the porous sintering filter attached to each of the openings; And
(d) a motor located below the chamber, wherein the motor can rotate the chamber by connecting a drive shaft of the motor to a center of a lower surface of the chamber;
The interior of the gas injection tube is empty so that the ozone can move to the chamber,
Ozone introduced into the chamber through the gas injection pipe is discharged into the water through the filter by the rotation of the chamber,
The horizontally extending portion is spaced apart in parallel with the upper surface of the chamber,
The vertically downward portion is spaced apart in parallel to the side of the chamber,
Each of the plurality of blades is coupled to the blades for rotating the plurality of blades in one direction,
The motor is controlled such that the rotational direction of the chamber is opposite to the rotational direction of the blade,
The microbubble generator is floating in the water supply system, characterized in that the microbubble generator is installed in the conduit so that the blade of the microbubble generator is forced by the treated water flowing in the conduit, so that the plurality of blades are rotated.

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