KR20170038511A - Water treatment apparatus - Google Patents

Abstract

The purpose of the present invention is to provide a water treatment apparatus which has smooth air circulation, a rapid bubble discharge speed and excellent cleaning efficiency since big bubbles can be uniformly, continuously discharged. The water treatment apparatus comprises: at least one hollow fiber membrane module; a water collecting pipe coupled to the at least one hollow fiber membrane module; an air supply part injecting and discharging air for cleaning the hollow fiber membrane module; and a frame fixing the hollow fiber membrane module, water collecting pipe and air supply part.

Description

[0001] WATER TREATMENT APPARATUS [0002]

The present invention relates to a water treatment apparatus.

In the case of immersion water treatment systems, contaminants on the surface must be shaken by continually introducing air (aeration) in order to prevent the contaminants from the microbial reactor tank or the raw water tank from sticking to the membrane surface and deteriorating filtration performance. In this case, an air supply unit including an aeration pipe is provided below the water treatment apparatus, and air is injected to perform membrane cleaning. Generally, the diffuser pipe has a circular pipe shape, and a plurality of diffuser holes are arranged at regular intervals to distribute the air evenly throughout the membrane.

In order to increase the cleaning efficiency, there has been attempted to apply an aerator apparatus (refer to FIG. 7) which holds a certain amount of air discharged from the diffuser pipe and discharges large bubbles at a time. However, in the aerator apparatus, air vortices were generated at the respective corners existing on the flow paths (first cavity, first chamber, and second chamber) through which air flows. The air vortex interferes with the air flow, so that the air can not be discharged from the aerator at a time, so that the initial velocity of the air discharged from the aerator is lowered, and large bubbles can not be continuously discharged.

Further, in a water treatment apparatus including a plurality of membranes, uniform bubble formation is indispensable in order to prevent a membrane that is not cleaned. As the water treatment apparatus becomes larger, it becomes more difficult to form uniform bubbles, which leads to deterioration of performance and life span of the bubbles.

Therefore, there is a need for a water treatment apparatus capable of uniformly discharging bubbles throughout the membrane, while being able to discharge large bubbles continuously and with a large energy.

Prior art relating to this is disclosed in U.S. Patent No. 8,038,882.

SUMMARY OF THE INVENTION An object of the present invention is to provide a water treatment apparatus which is smooth in air flow, has a quick discharge bubble velocity, can uniformly and continuously discharge large bubbles, and is excellent in cleaning efficiency.

The above and other objects of the present invention can be achieved by the present invention described below.

A water treatment apparatus according to an embodiment of the present invention includes at least one hollow fiber membrane module; A water collection pipe connected to the at least one hollow fiber membrane module; An air supply unit for transporting or discharging air for cleaning the hollow fiber membrane module; An aerator device for collecting and discharging air discharged from the air supply part; And a frame for fixing the hollow fiber membrane module, the water collecting pipe, and the air supply unit, wherein the air supply unit includes: an air supply pipe located above the hollow fiber membrane module and through which air flows; An aeration pipe positioned below the hollow fiber membrane module and discharging air through a plurality of air holes; And an air distribution pipe connecting the air supply pipe and the aeration pipe, wherein the aerator device comprises: a housing defining an inner cavity, the housing including at least one side wall and an upper surface portion connected to the at least one side wall; A first partition formed in the inner cavity and extending from a first lower end to a first end to form a first cavity and a second cavity; And a second partition wall formed in the inner cavity between the first partition and the first sidewall and extending from a second top to a second bottom to form a first chamber and a second chamber in the second cavity, Wherein the housing has an outlet opening communicating with the second chamber, wherein an upper end of the first partition wall is spaced apart from the upper surface portion to form a first opening, Wherein the at least one sidewall includes a first sidewall and a second sidewall opposite to the first sidewall, the first lower end of the first sidewall being connected to the first sidewall with a lower surface, And the upper surface portion are connected by a first connection surface, the second partition and the upper surface portion are connected by a second connection surface, and the first chamber and the second chamber are connected to each other at a lower portion of the second lower portion of the second bank, .

At least one of the first connection surface and the second connection surface may be a flat surface, a curved surface, or a polygonal surface.

The water treatment apparatus may be divided into at least two zones, and each of the at least two zones may be provided with a hollow fiber membrane module, an air distribution pipe, a diffusion pipe, and an aerator device.

The water treatment apparatus can be divided into six or more zones.

The plurality of water treatment apparatuses are divided into two or more zones, and each of the two or more zones may be provided with a hollow fiber membrane module, an air distribution pipe, a diffuser pipe and an aerator apparatus.

The plurality of hollow fiber membrane modules may be separated into six or more zones.

The aerator apparatus may include a curved surface in which the first connecting surface is a curved surface and a minimum curvature radius r _{1 of} the curved surface satisfies the following formula ( ₁ ).

[Formula 1]

In Equation (1), a is the distance between the second sidewall and the first bank.

The aerator apparatus may include a curved surface in which the second connecting surface is a curved surface and a minimum curvature radius r _{2 of} the curved surface satisfies the following formula ( ₂ ).

[Formula 2]

In Formula 2, b is the distance between the first bank and the second bank.

The at least one of the first connecting surface and the second connecting surface may be a polygonal surface.

The aerator apparatus, wherein the first connecting surface of the second side wall and the upper face portion extension is to point distance is connected, each x ₁ and x ₂ of the second side wall and the upper surface portion from the plane meet, the distance x ₁ and x ₂ Can satisfy the following equations (3) and (4), respectively.

[Formula 3]

[Formula 4]

In Equations 3 and 4, a is the distance between the second sidewall and the first bank.

The aerator unit, and the second connecting surface is a top surface portion and the distance from a point to the extension of the second partition wall meet each x ₃ and x ₄ in the upper surface portion and a plane connecting the second bank, the distance x ₃ and x ₄ can satisfy the following formulas 5 and 6, respectively.

[Formula 5]

[Formula 6]

In Equations 5 and 6, b is the distance between the first bank and the second bank.

Wherein the first partition and the bottom portion are connected by a third connection surface, the bottom portion and the first side wall are connected by a fourth connection surface, and the third connection surface and the fourth connection At least one of the faces may be planar, curved or polygonal.

Wherein the third connecting surface is a curved surface including a curved surface having a minimum radius of curvature (r ₃ ) satisfying the following formula (7), and the fourth connecting surface has a minimum curvature radius (r ₄ ) And a curved surface including a curved surface that satisfies the following equation.

[Equation 7]

[Equation 8]

In Equations 7 and 8, c is the distance between the first bank and the first sidewall.

The aerator apparatus, wherein the third and the connecting surface the first bank and lower parts of the extension is when the is from a point distance x ₅ and x ₆ each of the first partition wall and the connecting parts of planes meet, the distance x ₅ and x ₆ Satisfy the following formulas 9 and 10, respectively,

The fourth connecting surfaces when portions and a is the distance from a point to the extension of the first side wall meeting each x _7, and x ₈ is when plane connecting the part and the first side wall, the distance x _7, and x ₈ are, respectively formula 11 and 12 can be satisfied.

[Equation 9]

[Equation 10]

 [Equation 11]

 [Equation 12]

In Equations 9 to 12, c is the distance between the first bank and the first bank.

The aerator device may further include an inlet opening through which the housing communicates with the first cavity, and the diffuser pipe may be positioned through the inlet opening.

The aerator apparatus may have two or more separate internal cavities.

An object of the present invention is to provide a water treatment apparatus capable of smoothly flowing air, having a high discharge bubble velocity, uniformly and continuously discharging large bubbles, and having excellent cleaning efficiency.

1 is a perspective view of a water treatment apparatus according to one embodiment of the present invention.
2 is a perspective view of a hollow fiber membrane module of a water treatment apparatus according to one embodiment of the present invention.
FIG. 3 is a schematic view of a water collecting pipe connected to a frame of a water treatment apparatus according to an embodiment of the present invention.
FIG. 4 is a schematic view illustrating an air supply unit connected to a frame of a water treatment apparatus according to an embodiment of the present invention.
FIG. 5 is a schematic view illustrating a configuration in which an aerator is installed in an air supply unit connected to a frame of a water treatment apparatus according to an embodiment of the present invention.
FIG. 6 is a schematic view showing a configuration in which an aerator apparatus is installed in an aeration pipe according to one embodiment of the present invention.
7 is a perspective view and a cross-sectional view of a conventional aerator apparatus.
8 is a cross-sectional view of an aerator apparatus according to one embodiment of the present invention.
9 is a sectional view of an aerator apparatus according to another embodiment of the present invention.
10 is a cross-sectional view of an aerator apparatus according to another embodiment of the present invention.
11 is a perspective view of an aerator apparatus according to one embodiment of the present invention.
12 is a perspective view of an aerator apparatus according to another embodiment of the present invention.
13 is a perspective view of an aerator apparatus according to another embodiment of the present invention.
14 is a perspective view of an aerator apparatus according to another embodiment of the present invention.
15 is a perspective view of an aerator apparatus according to another embodiment of the present invention.

Embodiments of the present application will now be described in more detail with reference to the accompanying drawings. However, the techniques disclosed in the present application are not limited to the embodiments described herein but may be embodied in other forms.

It should be understood, however, that the embodiments disclosed herein are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, the width, thickness, and the like of the components are enlarged in order to clearly illustrate the components of each device. Also, while only a portion of the components is shown for convenience of explanation, those skilled in the art will readily recognize the remaining portions of the components.

When an element is described at the point of view of the general description of the drawings and an element is referred to as being located above or below another element, it is to be understood that the element may be located immediately above or below another element, Quot; can be intervened. Those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. In the drawings, the same reference numerals denote substantially the same elements.

It should be understood, however, that the singular forms "a", "an", and "the" include plural referents unless the context clearly dictates otherwise, and the terms "comprise" Acts, components, parts, or combinations thereof, but does not preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof It should be understood that it does not.

Hereinafter, a water treatment apparatus according to an embodiment of the present invention will be described with reference to FIG. 1 is a perspective view of a water treatment apparatus according to one embodiment of the present invention.

Referring to FIG. 1, a water treatment apparatus according to an embodiment of the present invention includes at least one hollow fiber membrane module 110; A water collection pipe connected to the at least one hollow fiber membrane module (110); An air supply unit for injecting and discharging air for cleaning the hollow fiber membrane module; An aerator device (not shown) for collecting and discharging the air discharged from the air supply part; And a frame 140 for fixing the hollow fiber membrane module, the water collection pipe, and the air supply unit. The aerator apparatus located below the hollow fiber membrane module in FIG. 1 is not shown.

Wherein the air supply unit includes an air supply pipe, a plurality of air distribution pipes, and a diffusion pipe, and the air supply pipe is located at an upper portion of the hollow fiber membrane module and distributes the introduced air to a plurality of air distribution pipes, And the air diffuser pipe is located at a lower portion of the hollow fiber membrane module and discharges the air introduced through the air distribution pipe through the plurality of air diffuser holes.

The water treatment apparatus of the present invention includes a plurality of hollow fiber membrane modules 110 at a high density, so that water treatment efficiency is high, and management of installation, repair, and the like is easy. Particularly, the water treatment apparatus of the present invention is divided into two or more zones, and the hollow fiber membrane module, the air distribution pipe, the diffusion pipe, and the aerator are provided for each of the two or more zones.

In addition, since the water treatment apparatus can install or repair a hollow fiber membrane module for each divided area, it is easy to manage the water treatment apparatus, and the water treatment apparatus collectively arranges a plurality of hollow fiber membrane modules, high.

Particularly, in the aerator apparatus of the present invention, by applying a specific structure, a space in which air vortexes are generated in the corners of the aerator apparatus is not formed, air flow is smooth, the discharge bubble velocity is fast, So that the cleaning efficiency is excellent. The bubble velocity means a velocity immediately after the bubble is discharged from the aerator apparatus.

In an embodiment, the number of zones can be appropriately selected depending on the size and purpose of the water treatment apparatus. For example, the water treatment apparatus may be separated into six or more zones.

Hereinafter, a hollow fiber membrane module of a water treatment apparatus according to an embodiment of the present invention will be described with reference to FIG. 2 is a perspective view of a hollow fiber membrane module of a water treatment apparatus according to one embodiment of the present invention.

The hollow fiber membrane module 110 may be used as long as it includes a plurality of hollow fiber membranes capable of filtering raw water and a header capable of collecting filtered water. 2, the hollow fiber membrane module 110 includes a plurality of hollow fiber membranes 111, an upper header 112 and a lower header 113 disposed above and below the plurality of hollow fiber membranes 111, And support members 119a and 119b positioned between the upper header 112 and the lower header 113 and supporting the hollow fiber membrane module 110. [ The upper header 112 may be connected to the upper collecting pipe 120 and the lower header 113 may be connected to the lower collecting pipes 123a and 123b. The lower collecting pipes 123a and 123b may be connected to the upper collecting pipe 120 through connection collecting pipes 112a and 112b. The upper and lower ends of the support members 119a and 119b may be connected to the frame 140. [ An upper end portion and a lower end portion of the support members 119a and 119b may be formed as coupling members for coupling the collection pipe and the frame 140 or may be connected to the collection pipe 120 and the frame 140 Can be combined.

The plurality of hollow fiber membranes 111 may be arranged in a predetermined direction at predetermined intervals, thereby forming a bundle shape. The material of the hollow fiber membrane 111 is not limited insofar as it has a property of filtering the water to be treated. As an example, the hollow fiber membrane 111 may be formed of a material selected from the group consisting of polyolefin, polysulfone, polyethersulfone, polyimide, polyetherimide, cellulose, cellulose acetate, polyvinyl alcohol, polyamide, polyethylene, polyfluorinated ethylene, polyvinylidene fluoride Acrylonitrile, polypropylene, polymethyl methacrylate, polytetrafluoroethylene, or polyether ketone. Specifically, it may include at least one of polyvinylidene fluoride (PVDF), polypropylene (PP), and polytetrafluoroethylene (PTFE).

The upper header 112 and the lower header 113 can collect the filtered water treated by the hollow fiber membrane 111. The upper header 112 and the lower header 113 may have a flow passage therein. For example, at least one of the support members 119a and 119b may be formed as a water pipe, The upper header 112 and the lower header 113 can communicate with each other. The material of the upper header 112 and the lower header 113 is not limited as long as the material has a predetermined mechanical strength and durability. For example, the upper header 112 and the lower header 113 may be formed of polyvinyl chloride, polyolefin, polycarbonate, polysulfone, acrylic resin, acrylonitrile butadiene styrene (ABS) .

The support member 119 may function to fix the hollow fiber membrane module 110 to the cassette when the hollow fiber membrane module 110 is mounted on the cassette described later. Although the support member 119 is shown in the figure as a bar and is fitted with the upper header 112 and lower header 113 respectively, the support member 119 is not necessarily limited to this, Various other variations are possible as long as they perform a fixed function. The coupling between the support member 119 and the upper header 112 and the lower header 113 can be variously modified.

Hereinafter, with reference to FIG. 3, a water collecting pipe and a frame of a water treatment apparatus according to an embodiment of the present invention will be described. FIG. 3 is a schematic view of a water collecting pipe connected to a frame of a water treatment apparatus according to an embodiment of the present invention.

The shape of the water collecting pipe is not limited as long as it is connected to the header of the hollow fiber membrane module and collects the treated water. For example, referring to FIG. 3, the water collecting pipe is connected to the upper collecting pipe 120, the lower collecting pipes 123a, 123b, 123c, 123d, 123e, 123f, 123) and the connecting collecting pipes 122a, 122b, 122c, 122d, 122e, 122f, 122 hereinafter). The water collecting pipe may include a connecting water collecting pipe 122 and a lower collecting pipe 123 for each zone of the zoned water treatment device.

The water collecting pipe may be connected to a plurality of hollow fiber membrane modules 110 to collect filtered water. Specifically, the upper collecting pipe 120 may be coupled to the upper header 112 of the hollow fiber membrane module, and the lower collecting units 123a and 123b may be coupled to the lower header 113 of the hollow fiber membrane module, And collects the processed water from the lower header. The connection collecting pipe 122 connects the upper collecting unit 120 and the lower collecting units 123a and 123b. In addition, the water collecting pipe may be coupled to the frame 140.

The frame 140 can be used without limitation on the shape, size, material, and the like as long as the hollow fiber membrane module, the water collecting pipe, and the air supply unit are fixed. For example, the frame 140 may be coupled to the hollow fiber membrane module, the collecting pipe, and the air supply unit through a fastening part, but is not limited thereto.

The frame 140 may be made in a form for separating the area of the water treatment apparatus. For example, although FIG. 3 illustrates the frame 140 separating the water treatment apparatus into six zones, it is not limited thereto.

Hereinafter, the air supply unit of the water treatment apparatus according to the embodiment of the present invention will be described with reference to FIGS. FIG. 4 is a schematic view illustrating a state in which an air supply unit is connected to a frame of a water treatment apparatus according to one embodiment of the present invention, and FIG. 5 is a schematic view of an air supply unit connected to a frame of a water treatment apparatus according to one embodiment of the present invention FIG. 6 is a view schematically showing a configuration in which an aerator apparatus is installed in an aeration pipe according to one embodiment of the present invention. 5 and 6 illustrate an aerator apparatus in which the outlet openings are formed in a row, the outlet openings may be formed in a zigzag or perpendicular to the longitudinal direction of the diffuser pipe for uniform cleaning.

The air supply unit includes an air supply pipe 131, a plurality of air distribution pipes 133a, 133b, 133c, 134a, 134b and 134c and a diffuser pipe 135, The air distribution pipes 133a, 133b, 133c, 134a, 134b and 134c are connected to the air distribution pipes 133a, 133b, 133c, 134a, 134b and 134c, 133b, 133c, 134a, 134b, 133b, 133c, 134a, 134b, 134c, 134b, 134c, 134d, and 134d are connected to the air diffusion pipe 134c through the plurality of air diffusing holes.

The air supply unit of the water treatment apparatus of the present invention applies a structure in which air is preliminarily distributed from an air supply pipe located at an upper portion of the hollow fiber membrane module and is sent to a diffusion pipe located at a lower portion of the hollow fiber membrane module through a plurality of air distribution pipes. Since the air previously distributed in the upper part of the hollow fiber membrane passes through the air distribution pipe, the air distribution pipe can reduce the diameter. When the diameter of the air distribution pipe is reduced, a clearance space can be formed in the lower portion of the water treatment apparatus, and the space for accommodating the following aerator apparatus can be secured. The greater the space in which the aerator apparatus is located, the greater the cleaning efficiency. Specifically, when the aerator apparatus is installed below the water treatment apparatus, the velocity of the bubbles reaching the hollow fiber membrane due to buoyancy of the bubbles becomes larger, and thus the cleaning efficiency is further increased by the bubbles having increased energy .

Further, in the embodiment of the present invention, the aerator device 150 has a specific shape, and is advantageous in that the airflow is smooth, the discharge bubble velocity is fast, and the large bubbles can be uniformly and continuously discharged. Specific forms of the aerator apparatus 150 will be described in detail below.

Specifically, the air to be used for cleaning the hollow fiber membrane module is injected into the air supply pipe 131 located at the upper portion of the water treatment apparatus, and the air supply pipe 131 is connected to the air distribution pipes 133a and 133b , 133c, 134a, 134b, and 134c. The air distribution pipe is connected to the air supply pipe 131 and includes vertically formed air distribution pipes 133a, 133b and 133c, horizontally formed below the hollow fiber membrane module and distributing air to the air distribution pipe 135 And may include distribution pipes 134a, 134b, and 134c.

The air introduced into the air diffuser pipe 135 through the air distribution pipes 134a, 134b, and 134c is exhausted to the air diffuser hole. The aerator 150 having a specific structure for collecting and discharging the air introduced from the diffuser hole is used without directly using the air bubbles discharged into the air diffuser hole to further increase the cleaning efficiency.

6, the aerator apparatus 150 may be located above the diffuser pipe 135, or the diffuser pipe 135 may be located through the aerator apparatus 150. [

Hereinafter, an aerator apparatus according to one embodiment of the present invention will be described with reference to Figs. 8 to 12. Fig.

8-12, an aerator device of a water treatment apparatus according to an embodiment of the present invention forms an inner cavity and includes at least one side wall 22A, 22B, 24 and at least one side wall 22A, 22B , 24); A first partition wall 40 formed in the inner cavity and extending from the first lower end 44 to the first upper end 42 to form a first cavity 32 and a second cavity 34; And an inner cavity formed between the first partition wall (40) and the first sidewall (22A) and extending from the second upper end (52) to the second lower end (54) And a second partition wall (50) forming a chamber (36) and a second chamber (38), the housing including an outlet opening (62) communicating with the second chamber (38) The upper end of the first partition wall 40 is spaced apart from the upper surface portion 25 to form a first opening portion 30 and the first cavity portion 32 and the second cavity portion 34 form the first opening portion 30 , And the at least one sidewall (22A, 22B, 24) includes a first sidewall (22A) and a second sidewall (22B) The lower end 44 is connected to the first side wall 22A by a lower surface portion 55. The second side wall 22B and the upper surface portion 25 are connected by a first connecting surface, 50 and the upper surface portion 25 are connected by a second connecting surface, The first chamber 36 and the second chamber 38 communicate with each other under the second lower end 54 of the second partition 50.

In an embodiment, at least one of the first connecting surface and the second connecting surface may be a flat surface, a curved surface, or a polygonal surface.

The housing may refer to a skeleton forming the structure of the aerator apparatus, and the bottom portion may refer to a skeleton connecting the first lower end of the first partition and the first sidewall, wherein 24 is parallel to the drawing sheet Means a sidewall which, together with the first sidewall 22A and the second sidewall 22B, forms an inner cavity and may mean one or both sidewalls parallel and facing each other.

When the first connection surface and the second connection surface do not include a plane, a curved surface, or a polygonal surface, they are generated at respective corners existing on the flow paths (first cavity, first chamber, second chamber) Due to the vortex of the air, the resistance to the airflow increases. As a result, the air can not be discharged at a time from the aerator apparatus, so that the initial velocity of the air discharged from the aerator apparatus is lowered and the large bubbles can not be continuously discharged.

The air conditioner of the present invention does not have a space in which air vortexes are generated in the corners of the flow path, so that the air flow is smooth, the discharge bubble velocity is fast, the large bubbles can be continuously discharged, There are advantages.

In one embodiment, at least one of the first connecting surface and the second connecting surface may comprise a curved surface.

8 and 11, FIG. 8 is a sectional view of an aerator apparatus in which at least one of a first connecting surface and a second connecting surface is a curved surface, and FIG. 11 is a cross- At least one of which is a curved surface.

In one example, the first connecting surface is a curved surface, and the minimum curvature radius r _{1 of} the curved surface may include a curved surface satisfying the following formula ( ₁ ).

[Formula 1]

In Equation (1), a is the distance between the second sidewall and the first bank.

, 더욱 구체적으로

일 수 있다. 상기의 범위에서, 에어레이터 장치는 공기 흐름이 원활하여 세정효율이 우수한 장점이 있다.Specifically, the minimum radius of curvature (r ₁ )

, More specifically

Lt; / RTI > In the above range, the aerator apparatus is advantageous in that the airflow is smooth and the cleaning efficiency is excellent.

The second connecting surface is a curved surface, and the minimum curvature radius r _{2 of} the curved surface satisfies the following formula ( ₂ ).

[Formula 2]

In Formula 2, b is the distance between the first bank and the second bank.

, 더욱 구체적으로

일 수 있다. 상기의 범위에서, 에어레이터 장치는 공기 흐름이 원활하여 세정효율이 우수한 장점이 있다.Specifically, the minimum radius of curvature (r ₁ )

, More specifically

Lt; / RTI > In the above range, the aerator apparatus is advantageous in that the airflow is smooth and the cleaning efficiency is excellent.

In another embodiment, at least one of the first connecting surface and the second connecting surface may be a polygonal surface. Referring to FIG. 9, FIG. 9 briefly illustrates a cross-sectional view of an aerator apparatus wherein at least one of the first connecting surface and the second connecting surface is a polygonal surface.

In yet another embodiment, at least one of the first connecting surface and the second connecting surface may be planar.

10 and 12, FIG. 10 is a simplified view of a cross-sectional view of an aerator apparatus in which at least one of a first connecting surface and a second connecting surface is a plane, FIG. 12 is a cross- At least one of which is a plan view of the aerator device.

For example, the first connection surface may be a plane connecting the second sidewall and the upper surface portion, the distances being respectively x ₁ and x ₂ from the point at which the extension line of the second sidewall and the upper surface portion meet, and the distances x ₁ and x ₂ The following equations 3 and 4 can be satisfied, respectively.

[Formula 3]

[Formula 4]

In Equations 3 and 4, a is the distance between the second sidewall and the first bank.

, 더욱 구체적으로

일 수 있다. 상기의 범위에서, 에어레이터 장치는 공기 흐름이 원활하여 세정효율이 우수한 장점이 있다.Specifically, one of the short sides of the triangle (x ₁ )

, More specifically

Lt; / RTI > In the above range, the aerator apparatus is advantageous in that the airflow is smooth and the cleaning efficiency is excellent.

, 더욱 구체적으로

일 수 있다. 상기의 범위에서, 에어레이터 장치는 공기 흐름이 원활하여 세정효율이 우수한 장점이 있다.Specifically, the other (x ₂ ) of the short sides of the triangle is

, More specifically

Lt; / RTI > In the above range, the aerator apparatus is advantageous in that the airflow is smooth and the cleaning efficiency is excellent.

As another example, the second connecting surface may be a plane connecting the upper surface portion and the second partition wall having distances x ₃ and x ₄ from the point where the extension line of the upper surface portion and the second partition wall meet, and the distances x ₃ and x ₄ can satisfy the following formulas 5 and 6, respectively.

[Formula 5]

[Formula 6]

In Equations 5 and 6, b is the distance between the first bank and the second bank.

, 더욱 구체적으로

일 수 있다. 상기의 범위에서, 에어레이터 장치는 공기 흐름이 원활하여 세정효율이 우수한 장점이 있다.Specifically, one of the short sides of the triangle (x ₃ )

, More specifically

Lt; / RTI > In the above range, the aerator apparatus is advantageous in that the airflow is smooth and the cleaning efficiency is excellent.

, 더욱 구체적으로

일 수 있다. 상기의 범위에서, 에어레이터 장치는 공기 흐름이 원활하여 세정효율이 우수한 장점이 있다.Specifically, the other (x ₄ ) of the short sides of the triangle

, More specifically

Lt; / RTI > In the above range, the aerator apparatus is advantageous in that the airflow is smooth and the cleaning efficiency is excellent.

In yet another embodiment, the aerator device may be configured such that the first partition and the bottom portion are connected by a third connecting surface, the bottom portion and the first side wall may be connected by a fourth connecting surface, At least one of the connecting surface and the fourth connecting surface may be a flat surface, a curved surface or a polygonal surface.

For example, the third connection surface may be a curved surface including a curved surface having a minimum radius of curvature r ₃ satisfying the following formula (7), and the fourth curved surface has a minimum curvature radius (r ₄ ) It may be a curved surface including a satisfying curved surface.

[Equation 7]

[Equation 8]

In Equations 7 and 8, c is the distance between the first bank and the first sidewall.

In the above range, the aerator apparatus is advantageous in that the airflow is smooth and the cleaning efficiency is excellent.

As another example, the third connecting surface may be a plane connecting the first partition and the bottom portion having distances of x ₅ and x ₆ from the point where the extended line of the first partition and the bottom portion meet, and the distances x ₅ and x ₆ The following formulas 9 and 10 may be satisfied, respectively,

The fourth when the connecting surface portion and the and the distance from a point to the extension of the first side wall meeting may each x _7, and x ₈ is when plane connecting the part and the first side wall, the distance x _7, and x ₈ are each The following equations 11 and 12 can be satisfied.

[Equation 9]

[Equation 10]

[Equation 11]

[Equation 12]

In Equations 9 to 12, c is the distance between the first bank and the first bank.

In the above range, the aerator apparatus is advantageous in that the airflow is smooth and the cleaning efficiency is excellent.

The aerator apparatus may further include an inlet opening through which the housing communicates with the first cavity.

The aerator apparatus holds a predetermined amount of air supplied to the inner cavity and discharges the air at a time, thereby improving the cleaning efficiency. Specifically, as the air supply to the inner cavity continues, the amount of air supplied increases, and the air is introduced into the first chamber (32) of the first cavity portion (32) and the second chamber portion 36 so that the liquid level in the first cavity 32 and the first chamber 36 is lowered. When the level of the liquid in the first chamber 36 is lower than the second lower end 54 of the second partition 50, the air is introduced into the second lower end 54 of the second partition 50, To the second chamber (38) through the first chamber (36). The air ascends through the second chamber 38 and is discharged through the outlet opening 62 into the air bubble. Most of the air in the first chamber 36 and the first cavity 32 is discharged through the outlet opening 62 in a short time. The aerator apparatus of the present invention is a structure in which a space in which air vortexes are generated is not formed in a corner of an air passage is applied, so that the air flow is smooth, the discharge bubble velocity is fast, There is an advantage of efficiency.

The aerator device may further include an inlet opening through which the housing communicates with the first cavity, and the diffuser pipe may be positioned through the inlet opening.

In a case where the aerator apparatus is applied to a water treatment apparatus including a plurality of hollow fiber membrane modules, a plurality of the above-described inner cavities may be used, respectively. Alternatively, as shown in Figs. 13, 14 and 15, An aerator device having an internal cavity may be applied. 13, 14 and 15, the outlet opening may be formed in a zigzag shape for uniform cleaning, or the outlet opening may be formed perpendicular to the longitudinal direction of the aeration pipe.

The aerator having one internal cavity has a merit that the manufacturing process is simple and can be separately replaced, and an aerator apparatus having an internal cavity separated into two or more is advantageous in that it is easy to install.

Hereinafter, the configuration and operation of the present invention will be described in more detail with reference to preferred embodiments of the present invention. However, the following examples are provided to aid understanding of the present invention, and the scope of the present invention is not limited to the following examples. The contents not described here are sufficiently technically inferior to those skilled in the art, and a description thereof will be omitted.

Example

Example  One

A first connecting surface and a second connecting surface are planar, and the third connecting surface is a curved surface. The first connecting surface and the second connecting surface have a curvature radius A photoreceptor device was manufactured. Specifically, the aerator apparatus is such that the distance (a) between the first sidewall and the first sidewall is 29 mm, the distance (b) between the first sidewall and the second sidewall is 10 mm, the distance between the first sidewall and the second sidewall of the distance (c) is 19 mm, is ₁ x 29 mm (1 times that of a), x ₂ is 22 mm (3/4 times that of a), x ₃ is 8 mm (3/4 times that of b), x ₄ is 7 mm (2/3 times b), r 3 is 13 mm (2/3 times c), and r 4 is 0 mm (0 times c).

Example  2

The first connecting surface, the second connecting surface, the third connecting surface, and the fourth connecting surface have a curved surface, the first connecting surface, the second connecting surface, the third connecting surface, and the fourth connecting surface, An aerator device was manufactured. Specifically, the aerator apparatus is configured such that the distance a between the first sidewall and the first sidewall is 72 mm, the distance b between the first sidewall and the second sidewall is 10 mm, the distance between the first sidewall and the second sidewall of the distance (c) is 19 mm, r ₁ is 48 mm (2/3 times that of a), r ₂ is 10 mm (1 times the b), r ₃ is 13 mm (2/3 times in c), r ₄ was prepared to have an internal cavity of 6 mm (1/3 of c).

Comparative Example  One

(A) between the first sidewall and the first sidewall is 28 mm, and the distance between the first sidewall and the second sidewall is 28 mm, and the distance between the first sidewall and the second sidewall is 50 mm. An aerator apparatus having an inner cavity having a distance b between the first and second sidewalls of 10 mm and a distance c between the first and second sidewalls of 19 mm was manufactured.

Assessment Methods

Each of the aerator apparatuses was manufactured, then immersed in a transparent acrylic water tank filled with water at a height of 50 cm or more, and then supplied with air at a rate of 7.5 L / min into the cavity of the aerator apparatus, The discharge cycle (sec), the time required to discharge the large bubbles (sec), the total volume (cm ³ ) of the large bubbles discharged at the time of one discharge and the discharge rate (m / sec) And the average value thereof is shown in Table 1 below. The effective volume (cm ³ ) inside each aerator was calculated by using the internal dimensions, and the discharged bubbles were collected in a 500 ml beaker and the total volume thereof was measured. Here, a single discharge refers to the discharge of large bubbles in one cycle of the aerator apparatus and excludes the discharge of fine bubbles after large bubbles discharge.

division Effective volume of the aerator apparatus
(Cm 3) Discharge cycle
(sec) Time required to discharge large bubbles (sec) Single Exhaust Large Air Total Volume
(Cm 3) Emission rate of large bubbles
(m / sec) Example 1 464 4.35 0.61 400 2.73 Example 2 465 4.29 0.54 410 3.16 Comparative Example 1 463 4.40 0.77 370 1.98

As shown in Table 1 above, the aerator apparatus to which the specific structure of the present invention is applied prevents air vortices, prevents large air bubbles from being broken when air is discharged, and prevents air bubbles from being generated. The speed of the bubbles is accelerated, so that the cleaning effect is excellent due to the large energy of the discharge bubbles.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the embodiments described above are in all respects illustrative and not restrictive.

Claims (14)

At least one hollow fiber membrane module;
A water collection pipe connected to the at least one hollow fiber membrane module;
An air supply unit for transporting or discharging air for cleaning the hollow fiber membrane module;
An aerator device for collecting and discharging air discharged from the air supply part; And
And a frame for fixing the hollow fiber membrane module, the water collecting pipe, and the air supply unit,
The air-
An air supply pipe located above the hollow fiber membrane module and through which air flows;
An aeration pipe positioned below the hollow fiber membrane module and discharging air through a plurality of air holes; And
An air distribution pipe connecting the air supply pipe and the acid gas pipe;
/ RTI >
The aerator apparatus includes:
A housing defining an inner cavity and including at least one side wall and an upper surface portion connected to the at least one side wall;
A first partition formed in the inner cavity and extending from a first lower end to a first end to form a first cavity and a second cavity; And
And a second partition wall formed in the inner cavity between the first partition and the first sidewall and extending from a second top to a second bottom to form a first chamber and a second chamber in the second cavity,
The housing including an outlet opening communicating with the second chamber,
Wherein an upper end of the first partition wall is spaced apart from the upper surface portion to form a first opening, the first cavity and the second cavity communicate with each other through the first opening,
Wherein the at least one sidewall includes a first sidewall and a second sidewall opposing the first sidewall, the first lower end of the first sidewall being connected to the first sidewall with a bottom portion,
The second side wall and the upper surface portion being connected by a first connecting surface,
Wherein the second partition and the upper surface portion are connected by a second connection surface, and the first chamber and the second chamber communicate with each other at a second lower end of the second partition.
The water treatment system according to claim 1, wherein at least one of the first connection surface and the second connection surface is a flat surface, a curved surface, or a polygonal surface.
The water treatment system according to claim 1, wherein the water treatment apparatus is divided into two or more zones,
Wherein each of the at least two zones is provided with a hollow fiber membrane module, an air distribution pipe, a diffusion pipe, and an aerator device.
The water treatment apparatus according to claim 1, wherein the water treatment apparatus is divided into six or more zones.
The air conditioner according to claim 1,
Wherein the first connecting surface is a curved surface and the minimum curvature radius r _{1 of} the curved surface satisfies the following formula 1:
[Formula 1]

In Equation (1), a is the distance between the second sidewall and the first bank.
The air conditioner according to claim 1,
Wherein the second connecting surface is a curved surface and the minimum curvature radius r _{2 of} the curved surface satisfies the following formula 2:
[Formula 2]

In Formula 2, b is the distance between the first bank and the second bank.
The air conditioner according to claim 1,
Wherein at least one of the first connection surface and the second connection surface is a polygonal surface.
The air conditioner according to claim 1,
Wherein the first connecting surface is a plane connecting the second sidewall and the upper surface portion having distances x ₁ and x ₂ from the point at which the extension line of the second sidewall and the upper surface portion meet, and the distances x ₁ and x ₂ satisfy the following formulas 3 and Water treatment apparatus satisfying Equation 4:
[Formula 3]

[Formula 4]

In Equations 3 and 4, a is the distance between the second sidewall and the first bank.
The air conditioner according to claim 1,
And the second connecting surface is a plane connecting the top surface portion and the second partition wall having distances x ₃ and x ₄ from the point where the extension line of the top surface portion and the second partition wall meet, and the distances x ₃ and x ₄ are 5 and Equation 6:
[Formula 5]

[Formula 6]

In Equations 5 and 6, b is the distance between the first bank and the second bank.
The air conditioner according to claim 1,
Wherein the first partition and the bottom portion are connected by a third connection surface, the bottom portion and the first side wall are connected by a fourth connection surface,
Wherein at least one of the third connecting surface and the fourth connecting surface is a flat surface, a curved surface, or a polygonal surface.
11. The air conditioner according to claim 10,
Wherein the third connecting surface is a curved surface including a curved surface having a minimum radius of curvature (r ₃ ) satisfying the following formula (7)
Wherein the fourth connecting surface is a curved surface including a curved surface having a minimum curvature radius (r ₄ ) satisfying the following formula (8):
[Equation 7]

[Equation 8]

In Equations 7 and 8, c is the distance between the first bank and the first sidewall.
11. The air conditioner according to claim 10,
And the third connecting surface is a plane connecting the first partition and the bottom portion having distances of x ₅ and x ₆ from the point at which the extension line of the first partition and the bottom portion meet, and the distances x ₅ and x ₆ satisfy the following expressions Equation 10 is satisfied,
The fourth connecting surfaces when portions and a is the distance from a point to the extension of the first side wall meeting each x _7, and x ₈ is when plane connecting the part and the first side wall, the distance x _7, and x ₈ are, respectively formula 11 and 12:
[Equation 9]

[Equation 10]

[Equation 11]

[Equation 12]

In Equations 9 to 12, c is the distance between the first bank and the first bank.
2. The water treatment system according to claim 1, wherein the aerator apparatus further comprises an inlet opening through which the housing communicates with the first cavity, and the diffuser pipe is located through the inlet opening.
The water treatment apparatus according to claim 1, wherein the aerator apparatus has two or more internal cavities.

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