KR102230193B1 - Flat ceramic separation membrane module - Google Patents

Abstract

The present invention relates to a flat ceramic separation membrane module and, more particularly, to a flat ceramic separation membrane module capable of maximizing the operation efficiency of the flat ceramic separation membrane module and efficiently performing operation and management of the flat ceramic separation membrane module by utilizing backwashing. To this end, the flat ceramic separation membrane module includes a front plate having a hole formed in the center; a decompression plate coupled to the front plate and having a decompression chamber; a plurality of flat ceramic separation membranes capable of separating solids in treated water; a fixing unit coupled to the plurality of flat ceramic separation membranes to fix the plurality of flat ceramic separation membranes to the decompression plate; a rear plate supporting the plurality of flat ceramic separation membranes; a support bar positioned between the decompression plate and the rear plate to fix the decompression plate and the rear plate to maintain a constant distance, and preventing the flat ceramic separation membrane from being damaged by pressure; and a side plate screw-coupled to sides of the decompression plate and the rear plate.

Description

Flat Ceramic Separation Membrane Module {FLAT CERAMIC SEPARATION MEMBRANE MODULE}

The present invention relates to a plate-type ceramic separator module, and more particularly, to maximize the operation efficiency of the plate-type ceramic separator, and utilizes backwash to efficiently perform the operation and management of the plate-type ceramic separator. It relates to a membrane module.

The need for high-efficiency, high-performance environmental water treatment technology is increasing due to deterioration of water quality due to urbanization and industrialization, increase of hardly decomposable wastewater, reinforcement of environmental regulations and improvement of living standards, and accordingly, water treatment processes using separators such as MBR are in the spotlight.

Most of the environmental water treatment uses an immersion type membrane filtration process. The separation membrane module applied to the immersion-type process is a type that is immersed in a bioreactor.In particular, in the case of a flat ceramic separation membrane applied to wastewater treatment, a module structure in which a pipe is connected only to the upper part is generally arranged vertically in a long shape. . This type of ceramic separator module is representative of Japan's Meidensha's products, and most Chinese companies imitate this type and apply it to MBR.

In Meidensha's ceramic separator module, each ceramic separator has a pipe connection mounted on the top and is connected in parallel to the parent pipe connected by an out-of-system pump. The resulting pressure gradient is non-uniform, resulting in a large loss head, and thus the water permeability may decrease.

In addition, it is argued that fouling on the surface of the separation membrane is suppressed by continuous aeration between the ceramic separation membranes at the bottom of the module, and it is possible to circulate water and sludge in the system and supply oxygen. In addition to the insignificant cleaning effect, there is an evaluation that it is difficult to manage the dissolved oxygen concentration in the return to an anoxic tank or an anaerobic tank due to excessive supply of oxygen.

In addition, in such a ceramic separator module, since the ceramic separator is mounted vertically and is connected to the parent pipe from the top, it is difficult to expect a uniform pressure distribution between the upper and lower portions of the ceramic separator, as mentioned above, as well as inside the ceramic separator. In the backwashing process where air is blown at the furnace back pressure or injecting chemicals, uniform cleaning is not performed. Therefore, it attempts to suppress primary fouling by continuously aeration from the bottom of the ceramic separator module, but in reality, the ceramic separator module is transferred to an external cleaning tank, cleaned with chemicals, and then transferred to the system, installed, and operated again. Has the hassle and difficulty of.

ItN's CFM system has the advantage of minimizing pressure gradients and reducing the size and weight of a single module by packaging ceramic separators arranged horizontally from the side unlike the previously described Meidensha. However, these modules are stacked and connected to the frame, and finally, they are immersed and installed in the same manner as Meidensha, and there is a disadvantage that over-aeration must be performed at the bottom of the module to suppress fouling.

Meidensha and ItN are submerged and have a structure that is easy to apply to existing wastewater treatment plants, but there is a limit in which the high water permeability of ceramic separators cannot be applied, so technology development to replace them is required.

Korean Patent Publication No. 10-1384239

The present invention is to solve the above problems, and an object of the present invention is to maximize the operation efficiency of the flat ceramic separator, and to efficiently perform the operation and management of the flat ceramic separator by utilizing backwash. It is to provide a ceramic separator module.

The above and other objects and advantages of the present invention will become apparent from the following description of preferred embodiments.

The above object is a ceramic separation membrane module that can be applied to a water treatment apparatus, comprising: a front plate having a hole formed in a center thereof; A pressure reducing plate fastened to the front plate and having a pressure reducing chamber; A plurality of flat ceramic separators manufactured by applying a tape casting method; A fixing unit that is coupled to the plurality of planar ceramic separators and fixes the plurality of planar ceramic separators to the pressure-sensitive plate; A rear plate supporting a plurality of flat ceramic separators; A support bar positioned between the pressure reducing plate and the rear plate to fix the pressure reducing plate and the rear plate to maintain a certain distance, and preventing damage to the flat ceramic separator by pressure; And a side plate screwed on the side of the pressure reducing plate and the rear plate.

Preferably, the flat ceramic separator module is coupled to a hole formed in the front plate, and a socket connected to the outlet pipe or backwash pipe so that filtered water flows out from the inside of the flat ceramic separator module or backwash air flows into the flat ceramic separator module. May include;

Preferably, the flat ceramic separator module may include a handle coupled to a predetermined position of the front plate.

According to the present invention, the operation efficiency of the flat ceramic separator can be maximized, and the operation and management of the flat ceramic separator can be efficiently performed by utilizing backwashing.

In addition, the present invention can prevent pressure loss as much as possible and increase the water permeability, and thus can be applied to a side stream type filtration device.

In addition, the present invention may be installed in a single or plural number in the water treatment device, and if a problem occurs while operating the water treatment device by installing a plurality of units, only the corresponding module needs to be replaced, so that maintenance is convenient.

However, the effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those skilled in the art from the following description.

1 is an exploded view of a flat ceramic separator module according to an embodiment of the present invention.
2 is a diagram schematically illustrating a front plate according to an example.
3 is a diagram schematically illustrating a pressure reducing plate according to an example.
4 is a diagram schematically illustrating a ceramic support before lamination according to an example.
5 is a diagram schematically illustrating after lamination of a ceramic support according to an example.
6 is a view showing a flat ceramic separator according to an example.
7 is a schematic view showing a fixing unit according to an example.
8 is a diagram illustrating a coupling relationship between a flat ceramic separator and a fixing unit according to an example.
9 is a schematic view showing a rear plate according to an example.
10 is a view showing a water treatment apparatus to which a flat ceramic separator module according to an embodiment of the present invention is applied.

Hereinafter, the present invention will be described in detail with reference to embodiments of the present invention and drawings. These examples are only illustratively presented to explain the present invention in more detail, and it will be apparent to those of ordinary skill in the art that the scope of the present invention is not limited by these examples. .

In addition, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs, and in case of conflict, the present specification including definitions The description of will take precedence.

In order to clearly describe the invention proposed in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification. And, when a certain part "includes" a certain component, this means that other components may be further included rather than excluding other components unless specifically stated to the contrary. In addition, the "unit" described in the specification means one unit or block that performs a specific function.

In each step, the identification code (first, second, etc.) is used for convenience of explanation, and the identification code does not describe the order of each step, and each step does not clearly describe a specific sequence in the context. It may be implemented differently from the order specified above. That is, each of the steps may be performed in the same order as the specified order, may be performed substantially simultaneously, or may be performed in the reverse order.

1 is an exploded view of a flat ceramic separator module 100 according to an embodiment of the present invention. Referring to FIG. 1, a flat ceramic separation membrane module 100 according to an embodiment of the present invention may be applied to a water treatment apparatus, and includes a front plate 110 having a hole 111 formed at a center thereof; A decompression plate 120 coupled to the front plate 110 and having a decompression chamber 121; A plurality of flat ceramic separation membranes 130 capable of separating solids in the treated water; A fixing part 140 which is coupled to the plurality of flat ceramic separators 130 and fixes the plurality of flat ceramic separators 130 to the pressure-sensitive plate 120; A rear plate 150 supporting a plurality of flat ceramic separators 130; It is located between the pressure reducing plate 120 and the rear plate 150 to fix the pressure reducing plate 120 and the rear plate 150 to maintain a certain distance, and prevents damage to the flat ceramic separator 130 by pressure. A support bar 160 for doing so; And a side plate 170 screwed from the side of the pressure reducing plate 120 and the rear plate 150. The present invention is a ceramic module that is easy to apply to a side stream type water treatment device, and maximizes the operation efficiency of the flat ceramic separator 130 and efficiently manages the operation and management of the flat ceramic separator 130 by using backwashing. It has an effect that can be performed.

The front plate 110 (refer to FIG. 2) has a hole 111 formed in the center thereof and functions as a support plate for a flat plate type separator module. The front plate 110 may be formed larger than the pressure reducing plate 120 or the rear plate 150, and through this, may be coupled to a side stream type water treatment apparatus as shown in FIG. 12. Various methods may be applied to the coupling method, but the water treatment device and the O-ring may be combined through an O-ring groove formed along the edge of the front plate 110. The hole 111 formed in the center of the front plate 110 may be coupled to the socket 180, and the socket 180 may leak filtered water from the inside of the flat ceramic separator module 100 or the flat ceramic separator module 100 ) It can be connected to an outlet pipe or a backwash pipe so that backwash air flows into the interior. In addition, a handle 190 may be formed at a predetermined position of the front plate 110 in order to install and move the flat ceramic separator module 100.

The pressure reducing plate 120 (see FIG. 3) is fastened to the front plate 110, has a pressure reducing chamber 121, and may be fastened to the front plate 110 in various ways, for example, to be screwed and fastened. However, it is not limited thereto. Specifically, the decompression plate 120 may be formed by forming a decompression chamber 121 on one surface that is screwed with the front plate 110, and the central portion of the plate forms a step with the side portion. A plurality of slits 122 may be formed on the other surface to which the fixing part 140 is coupled to be firmly fixed to the fixing part 140. An O-ring is positioned between the front plate 110 and the side portion of the pressure reducing plate 120 to prevent leakage of filtered water or backwashed air. The decompression chamber 121 formed on the decompression plate 120 functions to distribute the pressure of the filtered water discharged through the socket 180 or the backwash air flowing into the module, thereby maximizing filtration and backwashing efficiency. . In addition, such a backwashing method can perform a backwashing process using a minimum amount of air than an acid-aeration method for preventing fouling of a conventional separator, so that internal dissolved oxygen management can be efficiently performed.

The flat ceramic separation membrane 130 may separate the solid and the liquid when the treated water mixed with the solid is introduced, and a plurality of flat ceramic separation membranes 130 may be provided in parallel. The flat ceramic separator 130 may be manufactured by various methods, for example, a ceramic separator manufactured by an extrusion method, a ceramic separator manufactured by applying a tape casting method, or the like may be used. For example, the ceramic separator to which the tape casting method is applied may include a ceramic support, and a ceramic coating film formed on the upper, lower, and side surfaces of the ceramic support (see FIGS. 4 to 6). Specifically, the ceramic support may include a sheet molding body in which at least two or more ceramic sheets are stacked and a channel sheet having a flow path, and may be formed by stacking and pressing the sheet molding bodies on upper and lower surfaces of the channel sheet, respectively.

The fixing part 140 (refer to FIG. 7) is coupled to the plurality of planar ceramic separation membranes 130, respectively, to fix the plurality of planar ceramic separation membranes 130 to the pressure-sensitive plate 120. Specifically, the flat ceramic separator 130 is fixed to the fixing part 140 using epoxy or urethane so that the flow path formed in the flat ceramic separator 130 can be effectively utilized, and then connected to the pressure reducing plate 120 (Fig. 8). A silicone or urethane pad may be installed between the pressure reducing plate 120 and the fixing part 140 to prevent leakage of treated water or backwash air. The fixing unit 140 may be formed in a structure that is open as much as possible excluding a portion coupled to the pressure-sensitive plate 120 and the flat ceramic separator 130 to perform a function of distributing filtration pressure or backwash air.

The rear plate 150 (see FIG. 9) is located on the opposite side of the front plate 110 and supports a plurality of flat ceramic separators 130. The rear plate 150 maintains the spacing between the plurality of flat ceramic separators 130, fixes the entire module, and protects the module from external shocks that may occur during transportation or operation. To this end, a groove may be formed in the rear plate 150 so that the flat ceramic separator 130 may be coupled.

The support bar 160 is positioned between the pressure reducing plate 120 and the rear plate 150 to fix the pressure reducing plate 120 and the rear plate 150 to maintain a certain distance, and the flat ceramic separator 130 by pressure. ) To prevent damage. In addition, when the separation membrane module is mounted on the water treatment device, damage to the module due to gravity can be prevented. The support bar 160 may be made of a hard material such as stainless steel to effectively support the module.

The side plate 170 is screwed from the side of the pressure-sensitive plate 120 and the rear plate 150, protects the inside of the module from impact, and the components located between the front plate 110 and the rear plate 150 are external. It functions to support so that it is not separated by Like the support bar 160, the side plate 170 may be made of a hard material such as stainless steel in order to effectively support the module.

10 is a view showing a water treatment apparatus 200 to which the flat ceramic separation membrane module 100 according to an embodiment of the present invention is applied, and the flat ceramic separation membrane module 100 is efficiently used in a side stream type water treatment apparatus. In addition, a plurality of flat ceramic separation membrane modules 100 may be installed to maximize the filtration efficiency of the water treatment apparatus 200, and each independently performs a function, thereby facilitating maintenance.

In the present specification, only a few examples of various embodiments performed by the present inventors will be described, but the technical idea of the present invention is not limited or limited thereto, and may be modified and variously implemented by those skilled in the art.

100: flat ceramic separator module
110: front plate
111: Hall
120: pressure reducing plate
121: decompression chamber
122: slit
130: flat ceramic separator
140: fixed part
150: back plate
160: support bar
170: side plate
180: socket
190: handle
200: water treatment device

Claims (3)

In the ceramic separation membrane module applicable to a side stream type water treatment device,
A front plate having a hole formed in the center thereof;
A pressure reducing plate fastened to the front plate and having a pressure reducing chamber;
A plurality of flat ceramic separators capable of separating solids in the treated water;
A fixing part having a plurality of slits formed in the longitudinal direction, each coupled to a plurality of flat ceramic separators, to fix the plurality of flat ceramic separators to the pressure reducing plate;
A rear plate supporting a plurality of flat ceramic separators;
A support bar positioned between the pressure reducing plate and the rear plate to fix the pressure reducing plate and the rear plate to maintain a certain distance, and preventing damage to the flat ceramic separator by pressure; And
Including; a side plate screwed from the side of the pressure reducing plate and the rear plate;
The pressure reducing plate,
The central portion of one side that is screwed with the front plate forms a step with the side portion, thereby forming a decompression chamber capable of distributing filtration pressure or backwash pressure,
A plurality of slits are formed on the other side and arranged to correspond to the slits formed in the fixing unit, so that the treated water or backwash air can easily move.
A flat ceramic separator module, characterized in that the backwash air is injected into the hole formed in the front plate to discharge the backwash air from the inside of the ceramic separator to the outside to clean the ceramic separator. delete The method of claim 1,
Characterized in that it comprises a; a socket coupled to the hole formed in the front plate and connected to the outlet pipe or the backwash pipe so that filtered water flows out from the inside of the flat ceramic separator module or backwash air flows into the flat ceramic separator module. Flat ceramic separator module.

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