KR20090093769A - Stacked membrane filtration system and stacking method thereof - Google Patents

Abstract

A stacked membrane filtration system and a stacking method thereof are provided to increase processing capacity by extending the system with a plurality of a separation membrane module unit, and to improve purification performance of wastewater/sewage. A stacked membrane filtration system(100) includes a raw water tank(110), a raw water transfer pipe(120), one or more hollow cylindrical separation membrane module(140), a separation membrane module connection part(150), a treated water transfer pipe(180), and a treated water tank(190). The raw water tank includes a raw water outlet(112) and a raw water inlet(116). The raw water tank stores temporarily the raw water. The separation membrane module includes a filter part(143) to purify the raw water supplied from the raw water transfer pipe. The treated water tank temporarily stores purified water. The stacked membrane filtration system further includes a booster pump(130) and a suction pump(170).

Description

Stacked Membrane Separation System and Membrane Stacking Method Used Thereof {STACKED MEMBRANE FILTRATION SYSTEM AND STACKING METHOD THEREOF}

The present invention is an industrial water treatment membrane separation system for treating a large amount of wastewater / wastewater, and more specifically, a stack-type membrane separation that enables large-sized treatment capacity by combining a membrane module equipped with a filter for circulating wastewater / wastewater and water treatment. A system and separator stacking method used therein.

As the demand for water increases rapidly due to rapid economic development and population growth, various methods for stable water supply have been recently considered.

As one of several measures, large-scale river development and groundwater development are being reviewed and promoted. Recently, river development causes water shortages due to the river's dryness every year, and groundwater contamination and depletion are caused by the development of groundwater. It is becoming increasingly difficult to secure stable water sources.

In particular, in coastal areas, due to unreasonable groundwater development, seawater penetrates into underground aquifers, which further contaminates groundwater itself, making it impossible to use groundwater.

Therefore, in order to prevent water shortage and groundwater contamination, methods of using wastewater such as leachate or sewage are being considered. Leachate or sewage is optimal to be used as an alternative source of water since a certain amount continuously occurs even during a drought or natural disaster.

In order to reuse it, a technology that can completely remove various contaminants contained in sewage or leachate is required.

The amount of domestic sewage, such as sewage, generated from all over the country is about 16,000 thousand tons per day, and is treated through a number of sewage treatment plants and sewage treatment facilities. However, conventionally, by using only simple filtration facilities such as sand filtration or activated carbon filtration facilities to treat the discharged water discharged from sewage treatment plants and sewage treatment facilities, the treated water filtered in the filtration facilities is low grade such as toilet water, sprinkling water, and landscape water. It could only be used as a general purpose water.

Other methods are biological treatment (anaerobic, aerobic, rotating discs, etc.) and chemical treatment (neutralization, flocculation, precipitation, fenton oxidation, etc.) and then discharged to nearby shores or rivers. It is affecting ecosystems such as river pollution and even sea pollution.

Therefore, to solve this problem, sewage or leachate has recently been treated using membrane separation technology. Membrane separation technology has been developed and developed around the reverse osmosis method for desalination of industrial water. Currently used techniques include microfiltration (MF), ultrafiltration (UF) and nanofiltration (NF). ), Reverse osmosis (RO), gas separation (GS) and electrodialysis (ED).

Separation membranes called osmotic or semipermeable membranes used in membrane separation techniques are liquid or solid membranes with very fine pores on the surface and selectively passing certain components. Membranes commonly used are made of polyacrylamide or cellulose acetate, which can filter 99% or more of the salt.

Existing separation and concentration processes induce phase changes and separate materials, resulting in high energy consumption and high temperature to change phases. On the other hand, since the material is selectively separated without changing the phase, the process is simple and the energy efficiency is excellent.

The membrane separation technology for immersion type water treatment, which is a membrane separation technique mainly used, is a method of obtaining treated water by a suction pump by immersing a "separation membrane module unit" in a settling tank in which a predetermined amount of raw water is supported. Immersion-type membrane separation technology has the disadvantage of easily generating contamination on the membrane surface of the membrane module unit due to the suction method and increasing the flow rate as the differential pressure increases, and the structure inside the static sedimentation tank without flow. As a result, fouling of the membrane surface is exacerbated with time. In addition, the operation method is a dead-end filtration method (one-time filtration method), which accelerates the adhesion of contaminants on the membrane surface by increasing the concentration of water generated after the influent treatment. In addition, in order to increase the treatment capacity, it is necessary to install additionally for the expansion of the sedimentation tank, so there is a problem that a time / economic loss factor occurs.

An object of the present invention for solving the above problems is to continuously circulate and purify the waste water / to improve the purification performance, by connecting a plurality of membrane module units to expand the system by stacking membrane separation that can increase the treatment capacity A system and a lamination method used therefor.

Laminated membrane separation system according to the present invention for achieving the above object is a raw water tank for temporarily storing a large amount of raw water; A raw water moving pipe connected to a raw water outlet installed at one side of the raw water tank to form a flow path such that raw water discharged from the raw water tank flows back into the raw water tank through a raw water inlet provided in the raw water tank; A hollow cylindrical membrane module provided with one or two or more on the path of the raw water moving pipe and having a filter part detachably therein to purify raw water supplied through the raw water moving pipe; A hollow cylindrical one side open membrane module connection unit installed between the separator module and the raw water moving tube and flowing raw water supplied through the raw water moving tube; A hollow cylindrical both side open separator module connection portion provided between the separator modules and through which the raw water supplied through the raw water moving tube flows; A treatment water moving tube which is connected to one side or both sides of the open membrane module connection part and flows purified water passing through a filter unit installed in the membrane module; And a treated water tank for temporarily storing purified water flowing through the treated water moving pipe.

A pressurizing pump provided on a path of the raw water moving pipe to apply pressure to smoothly supply raw water discharged from the raw water tank to the membrane module; And a suction pump provided on a path of the treated water moving tube to apply pressure to smoothly move the purified water that has passed through the membrane module to the treated water tank.

In addition, an air bubbling system capable of generating air bubbles connected to one side of the membrane module; It is preferable that the air-bubbling system and the air bubble supply pipe extending to the inside of the membrane module so as to connect one side of the membrane module and supply air bubbles to the filter unit in the membrane module;

On the other hand the membrane module is a module housing forming an appearance; Potting parts provided at both ends of the separation membrane module and provided with a plurality of cylindrical groove filter mounting parts along the circumferential direction for inserting both end portions of the filter part to fix the filter part; And a raw water inlet pipe extending from the center of the potting part to the raw water supplied from the raw water moving pipe so as to flow through the membrane module.

Furthermore, the one side open membrane module connection part is provided on the central shaft of the hollow cylindrical cylindrical one side open membrane module connection part housing forming the exterior of the module connection part, and the raw water supplied from the raw water moving tube flows. A first groove having a rectangular cross section along a circumferential direction is formed on an upper surface or a lower surface of the one side open membrane module connecting portion housing, the inner passage tube having one side opening membrane module connecting portion contacting the potting portion of the membrane module. One or more first openings are formed in the filter, and the purified water passing through the filter unit of the membrane module is moved to the treated water pipe through the first opening.

In addition, the both sides of the open membrane module connecting portion is formed on the central axis of the module connecting portion housing so that the raw water passing through the interior of the hollow cylindrical both side open membrane module connecting portion housing, the separator module forming the appearance of the module connecting portion flows. It consists of two internal passage pipes, the upper and lower sides of the two open membrane module connecting portion housing that is in contact with the potting part of the membrane module is formed with a second groove having a rectangular cross section along the circumferential direction and one between the housing and the second groove Alternatively, at least two second openings may be formed, and the purified water passing through the filter unit of the membrane module may move to the treated water pipe through the second opening.

Meanwhile, an inverted cylindrical flow path deformer is connected to the raw water inlet pipe in the membrane module and has a plurality of holes formed on the bottom and the side thereof so that the raw water supplied through the raw water inlet pipe flows upward and sideways. It is good to be.

Furthermore, it is preferable that a 2-O-ring is provided at the contact portion of the raw water inlet pipe of the separator module and the first inner passage tube of the one side open membrane module connection part or the contact portion of the membrane module housing and the one side open membrane module connection part housing. .

In addition, the contact portion of the raw water inlet pipe of the separator module and the second inner passage pipe of the open membrane module connecting portion of the both sides or the contact portion of the membrane module housing and the housing module opening of the both sides is preferably provided with a 2-O-ring.

Meanwhile, the filter unit of the membrane module may be provided with a hollow fiber membrane or a pleated filter.

According to the stacked membrane separation system and the stacking method according to the embodiment of the present invention described above, the system is improved by circulating wastewater / wastewater in the system to improve purification performance and additionally connect a plurality of standardized membrane module units for filtering. By expanding, the processing capacity can be increased, and it is economical because the filter in the membrane module unit can be replaced and used continuously.

1 is a schematic diagram of a stacked membrane separation system 100 according to an embodiment of the present invention;

2 is a view showing a flow path of the stacked membrane separation system 100 shown in FIG.

3 is a cross-sectional view of the membrane module 140 of the stacked membrane separation system 100 according to an embodiment of the present invention.

4 is a plan view of the potting part 145 of the separator module 140 of FIG.

5A and 5B are cross-sectional views of one side open membrane module connection unit 150 of the stacked membrane separation system 100 according to an embodiment of the present invention.

6A and 6B are cross-sectional views of both open membrane module connectors 160 of the stacked membrane separation system 100 according to an embodiment of the present invention.

7 is a plan view of one side open membrane module connection parts 150 and 160,

FIG. 8 is a view illustrating a state in which an air bubbling system 195 is installed in the separator module 140 illustrated in FIG. 1.

9 to 13 show examples of the membrane stacking method of the present invention.

<Description of the symbols for the main parts of the drawings>

100: stacked membrane separation system 110: raw water tank

112: raw water outlet 116: raw water inlet

120: raw water moving tube 130: pressure pump

140: membrane module 141: membrane module housing

143: filter unit 144: filter mounting unit

145: potting part 146: raw water inlet pipe

147: 2-O-ring 148: fastening member

150: one side open membrane module connection

151: one side open membrane module connection housing

153: first internal passage pipe 155: first opening

156: the first home

160: both sides open membrane module connection

161: Both side open membrane module connection housing

163: second inner passage pipe 165: second opening

166: second groove 170: suction pump

180: treated water moving pipe 190: treated water tank

192: treated water inlet 195: air bubbling system

197: air bubble supply pipe

The above objects, features and other advantages of the present invention will become more apparent by describing the preferred embodiments of the present invention in detail with reference to the accompanying drawings. Hereinafter, with reference to the accompanying drawings will be described in detail the laminated membrane separation system and the stacking method according to an embodiment of the present invention.

1 is a schematic diagram of a stacked membrane separation system 100 according to an embodiment of the present invention, Figure 2 is a view showing a flow path of the stacked membrane separation system 100 shown in FIG.

1 and 2, the stacked membrane separation system 100 according to an embodiment of the present invention is a raw water tank 110, a raw water tank 110 to temporarily store a large amount of raw water to purify sewage or leachate It is connected to the raw water outlet 112 is installed in one side of the open so that the raw water discharged from the raw water tank 110 flows back into the raw water tank 110 through the raw water inlet 116 provided in the raw water tank 110 One or two or more on the path of the raw water moving pipe 120, the raw water moving pipe 120 to form a flow path of raw water, and the filter unit 143 is provided therein to purify the raw water supplied through the raw water moving pipe 120. One side of the hollow cylindrical membrane module 140, the membrane module 140 and one side open membrane module connection portion 150 of the hollow cylindrical through which the raw water supplied through the raw water moving pipe 120 is flowed, Separator Hollow cylindrical both open membrane module connecting portion 160, one open membrane module connecting portion 150 or both open membrane module connecting portion 160 provided between the modules 140 and the raw water supplied through the raw water moving pipe 120 flows Treatment process moving pipe 180, the purified water flowing through the filter unit 143 installed in the membrane module 140, the flow of the purified water flowing through the treated water moving pipe 180 is temporarily disposed A water tank 190 is included.

The raw water tank 110 may adjust the storage capacity according to the required amount of purified water and may be made of a material such as stainless steel that does not corrode.

The raw water discharged from the raw water tank 110 flows along the raw water moving pipe 120 connecting between the raw water discharge port 112 and the raw water inlet 116.

Raw water flowing along the raw water moving pipe 120 is purified inside the membrane module 140 provided on the path of the raw water moving pipe 120, and the purified water is connected to one side or both sides of the open membrane module connection parts 150 and 160. Flows to the treatment water tank 190 along the treatment water moving pipe 180 provided at each of the openings 155 and 165 of the module connection parts 150 and 160 (shown in solid line).

Raw water that has not been purified in the membrane module 140 passes through the inside of the membrane module 140 and flows back into the raw water tank 110.

3 is a cross-sectional view of the membrane module 140 of the stacked membrane separation system 100 according to an embodiment of the present invention, and FIG. 4 is a plan view of the potting part 145 of the membrane module 140 of FIG. 3.

The membrane module 140 provided on the path of the raw water moving pipe 120 to purify the raw water introduced therein is provided at both ends of the module housing 141 and the membrane module 140 forming the exterior of the membrane module 140. The potting part 145 and the raw water inlet tube 146 extending inward from the center of the potting part 145 so that the raw water supplied from the raw water moving tube 120 flows through the membrane module 140.

The potting part 145 is provided with a plurality of cylindrical groove-shaped filter mounting parts 144 in which both ends of the filter part 143 can be inserted to fix the filter part 143 along the circumferential direction.

Raw water flowing through the raw water moving pipe 120 is introduced into the membrane module 140 through the raw water inlet pipe 146 of the membrane module 140. The purified water is introduced into the outside from the outside of the filter unit 143 while flowing between the plurality of filter units 143 mounted on the filter mounting unit 144 of the potting unit 145. In other words, the filter is filtered by an external pressure so that impurities remain on the outer surface of the filter unit 143 and the purified water flows up and down through the inside of the filter unit 143.

The membrane module 140 is generally a hollow cylindrical shape, but may be another shape having a flow path formed in the center thereof.

In addition, the filter unit 143 may be provided with a hollow fiber membrane or a pleated filter. In the case of the present invention, since the raw water is purified by external pressure, it is preferable to use a hollow fiber membrane or a pleated filter separated from each filter.

The separator module 140 may be installed alone in a system and may connect a plurality of separator modules 140 by using both open separator module connectors 160 according to a user's selection.

Figures 5a), b) is a cross-sectional view of one side open membrane module connection portion 150 of the stacked membrane separation system 100 according to an embodiment of the present invention, Figure 6a), b) is an embodiment of the present invention A cross-sectional view of both open membrane module connectors 160 of the stacked membrane separation system 100 according to an example, and FIG. 7 is a plan view of one or both open membrane module connectors 150 and 160.

One side open membrane module connector 150 shown in FIG. 5 is a hollow cylindrical one side open membrane module connector housing 151, which forms the exterior of the module connector 150, so that the raw water supplied from the raw water moving pipe 120 flows. It consists of a first inner passage pipe 153 provided on the central axis of the module connection housing 151.

One side open membrane module connector 150 is installed between the membrane module 140 and the raw water moving pipe 120 and the upper surface of the one side open membrane module connector housing 151 abuts with the porting portion 145 of the membrane module 140. Alternatively, a first groove 156 having a rectangular cross section is formed along the circumferential direction.

One or more first openings 155 are formed between the one side open membrane module connector housing 151 and the first groove 156.

Therefore, the purified water flowing in the vertical direction through the filter part 143 provided in the potting part 145 of the membrane module 140 moves to one side of the membrane module connecting part 150 to form a rectangular first groove 156. ) And flows into the treated water tank 190 through the treated water moving pipe 180 connected to one or more first openings 155.

Both sides of the open membrane module connector 160 shown in FIG. 6 is a hollow cylindrical two-sided open membrane module connector housing 161 forming the appearance of the module 150, so that the raw water passed through the interior of the membrane module 140 flows. It consists of a second inner passage pipe 163 provided on the central axis of the module connection housing 161.

Both open membrane module connecting portions 160 are installed between the membrane modules 140 and the upper and lower surfaces of both open membrane module connecting portion housings 161 contacting the potting part 145 of the membrane module 140 have a cross section along the circumferential direction. A rectangular second groove 166 is formed.

Therefore, the membrane module connection part housing 161 having a predetermined thickness is present between the second grooves 166 provided on both upper and lower surfaces to separate the upper and lower sides.

One or two or more second openings 165 are formed at an upper portion and a lower portion thereof in a circumferential direction between the two open membrane module connection housings 161 and the second groove 166.

Therefore, the purified water flowing in the vertical direction through the filter unit 143 provided in the potting part 145 of the membrane module 140 moves to both open membrane module connection parts 160 to form a rectangular second groove 166. The water is introduced into the treated water tank 190 through the treated water moving pipe 180 connected to one or more second openings 165.

The treated water movement pipe 180 may be installed in the first opening 155 provided on the side of the one side open membrane module connection housing 151 or the second opening (side) provided in the side of both open membrane module connection housing 161. 165, and are combined into a single pipe and connected to the treatment water tank 190.

The treated water tank 190 may adjust the storage capacity according to the required amount of purified water and may be made of a material such as stainless steel that does not corrode.

Referring to FIG. 4 showing a plan view of the potting part 145 of the membrane module 140 and FIG. 7 showing a plan view of the one side open membrane module connection part 150, the raw water inlet pipe 146 of the membrane module 140 is The contact portion of the first inner passage pipe 153 of the side open membrane module connection part 150, the contact portion of the membrane module housing 141 and the one side open membrane module connection part housing 151, and the raw water inflow pipe of the membrane module 140 ( 146 between the contact portion of the second inner passage 163 of the open membrane module connection portion 160 and the membrane module housing 141 and the contact portion of the open membrane module connector housing 161 of the two-sided ring (147). It is provided.

A two-ring 147 is provided between the membrane module 140 and one or both open membrane module connections 150 and 160 to separate the membrane module 140, the first inner passage 153, and the second inner passage. Raw water passing through the pipe 163 does not leak to the outside and is also temporarily stored in the first groove 156 of the one side open membrane module connector 150 or the second groove 166 of the both side open membrane module connector 160. Integers don't leak out

In addition, one or both of the open membrane module connection parts 150 and 160 or the potting part 145 of the membrane module 140 are fastened and fixed by the fastening member 148, respectively.

On the path of the raw water moving pipe 120 may be provided with a pressure pump 130 for applying pressure to smoothly supply the raw water discharged through the raw water outlet 112 of the raw water tank 110 to the membrane module 140.

The pressure pump 130 may adjust the force applied to the raw water flowing in the raw water moving pipe 120, it is possible to adjust the amount of purified water. That is, increasing the pressure of the pressure pump 130 increases the flow rate, the flow rate passing through the membrane module 140 increases, so the treated purified water also increases. On the contrary, if the pressure of the pressure pump 130 is reduced, the flow rate decreases, and the flow rate passing through the membrane module 140 decreases, so that the treated purified water decreases.

On the path of the treated water moving pipe 180, a suction pump 170 for applying pressure to improve the water purification capability of the membrane module 140 and the purified water passing through the membrane module 140 to move smoothly to the treated water tank 190 is provided. It may be provided.

The suction pump 170 may adjust the force applied to the purified water flowing in the treated water moving pipe 180, and provides an additional suction force to the pressure of the pressure pump 130 to filter the filter 143 of the membrane module 140. At the same time to improve the water treatment capacity for the raw water of the ()) to allow the purified water in the treated water moving pipe 180 to move easily to the treated water tank (190).

FIG. 8 is a view illustrating a state in which an air bubbling system 195 is installed in the separator module 140 illustrated in FIG. 1.

Referring to FIG. 8 in detail, an air bubbling system 195, an air bubbling system 195, and one side of the membrane module 140, which are connected to one side of the membrane module 140 and may generate air bubbles, are provided. The air bubble supply pipe 197 is further provided to extend into the separation membrane module 140 so as to connect and supply air bubbles to the filter unit 143 in the separation membrane module 140.

Accordingly, when the air bubbling system 195 is operated, air bubbles generated in the air bubbling system 195 flow through the air bubble supply pipe 197 and extend between the filter parts 143 installed in the membrane module 140. It is discharged through the air bubble supply pipe 197.

At this time, contaminants attached to the exterior of the filter unit 143 are separated from the filter unit 143 by air bubbles, mixed with raw water flowing through the membrane module 140, and discharged back to the raw water moving tube 120.

Therefore, raw water that is not filtered through the filter unit 143 of the membrane module 140 may be purified by circulating again along the raw water moving pipe 120 together with the contaminants.

In order to use the air bubbling system 195 more effectively, the flow path deformation unit 193 may be additionally installed.

The flow path deformable portion 193 is an inverted cylindrical shape connected to the raw water inlet pipe 146 in the membrane module 140, and a plurality of holes are formed at the bottom and side surfaces thereof. Therefore, since the raw water supplied through the raw water inlet pipe 146 in the membrane module 140 flows through the holes formed in the bottom and side surfaces, contaminants separated from the filter unit 143 by air bubbles are easily separated from the membrane module 140. To be discharged to outside.

According to the laminated membrane separation system 100 of the present invention, the purification performance is improved by circulating raw water such as wastewater / wastewater in the system, and the system is expanded by additionally connecting a plurality of standardized membrane modules 140 for filtering raw water. By doing so, it is possible to increase the processing capacity, and it is economical since the filter can be continuously used by replacing the filter in the membrane module 140.

The shape of the membrane module 140, the one side open membrane module connection part 150, and the two side open membrane module connection part 160 used in the stacked membrane separation system 100 of the present invention may be changed in various ways according to the flow of raw water and treated water. It can be configured, the modifications thereof will be described in Figures 9 to 13 described below.

FIG. 9 is a raw water inlet 215a installed to supply raw water into the separator, a raw water outlet 215b through which treated raw water is discharged, and one open membrane module connection part 211 connected to the lowest and uppermost ends of the stacked separators 211. , 213), treated water outlets 216a, 216b, and 216c, which are outlets for treating water, membrane modules 210, filter parts 214, and both open membrane module connection parts 212 installed at the connection parts of the laminated membranes, A modification example of the potting part 217 is illustrated.

In FIG. 9, the potting part 217 is directly attached to one open membrane module connection part 211 and 213 or both open membrane module connection parts 212.

10 shows the raw water inlet 225a, the raw water outlet 225b, the one side open membrane module connection part 221, 223, the treated water outlet 226a, 226b, 226c, the membrane module 220, the filter part 224, both open membrane Modular connection portion 222, the raw water inlet pipe 227 is shown a modified example.

In the separation membrane module shown in FIG. 10, a raw water inlet pipe 227 may be additionally installed, indicating that the flow of treated water and raw water is different from that of FIG. 9. As such, when the raw water inlet pipe 227 is separately installed, the flow of raw water flowing in the module becomes more uniform.

11 shows the raw water inlet 235a, the raw water outlet 235b, one open membrane module connection part 231, 233, the treated water outlet 236a, 236b, 236c, the membrane module 230, the filter part 234, both sides. Open membrane module connection portion 232, the raw water inlet pipe 237 is shown a modified example.

In FIG. 11, since the raw water flows into the upper end portion not only through the center of both open membrane module connecting portions 232 but also through a flow path installed at the side along the circumferential direction, the raw water may exhibit a more uniform flow.

12 shows a raw water inlet 245a, a raw water outlet 245b, one open membrane module connection part 241, 243, a treated water outlet 246a, 246b, 246c, a membrane module 240, a filter part 244, both sides Open membrane module connection part 242, the raw water inlet pipe 247 is shown a modified example.

13 shows the raw water inlet 255a, the raw water outlet 255b, one side of the open membrane module connection part 251, 253, the treated water outlet 256a, 256b, 256c, the membrane module 250, the filter part 254, both sides. Open membrane module connection portion 252, the raw water inlet pipe 257 is shown a modified example consisting of.

While preferred embodiments of the present invention have been described above, the present invention is not limited to the above-described specific embodiments. That is, those skilled in the art to which the present invention pertains can make many changes and modifications to the present invention without departing from the spirit and scope of the appended claims, and all such appropriate changes and modifications are possible. Equivalents should be considered to be within the scope of the present invention.

Claims (12)

A raw water tank for temporarily storing a large amount of raw water; A raw water moving pipe connected to a raw water outlet installed at one side of the raw water tank to form a flow path such that raw water discharged from the raw water tank flows back into the raw water tank through a raw water inlet provided in the raw water tank; A hollow cylindrical membrane module provided with one or two or more on the path of the raw water moving pipe and having a filter part detachably therein to purify raw water supplied through the raw water moving pipe; A hollow cylindrical one side open membrane module connection unit installed between the separator module and the raw water moving tube and flowing raw water supplied through the raw water moving tube; A hollow cylindrical both side open separator module connection portion provided between the separator modules and through which the raw water supplied through the raw water moving tube flows; A treatment water moving tube which is connected to one side or both sides of the open membrane module connection part and flows purified water passing through a filter unit installed in the membrane module; And, And a treated water tank for temporarily storing purified water flowing through the treated water moving pipe. The method of claim 1, A pressurizing pump provided on a path of the raw water moving pipe to apply pressure to smoothly supply raw water discharged from the raw water tank to the separator module; And, And a suction pump provided on a path of the treated water moving tube to apply pressure to smoothly move the purified water passing through the membrane module to the treated water tank. The method of claim 1, An air bubbling system capable of generating air bubbles connected to one side of the membrane module; Stacked membrane separation system further comprises; an air bubble supply pipe extending into the membrane module to connect the air bubbling system and one side of the membrane module and to supply air bubbles to the filter in the membrane module . The method of claim 1, wherein the membrane module A module housing forming an appearance; Potting parts provided at both ends of the separation membrane module and provided with a plurality of cylindrical groove filter mounting parts along the circumferential direction for inserting both end portions of the filter part to fix the filter part; And a raw water inlet tube extending inward from the center of the potting part so that the raw water supplied from the raw water moving tube flows through the membrane module. The method of claim 1, wherein the one side open membrane module connection portion A hollow cylindrical one side open membrane module connecting part housing forming an appearance of the module connecting part, and a first inner passage provided on a central axis of the module connecting part housing so that raw water supplied from the raw water moving pipe flows, One side of the membrane module connection part which contacts the potting part of the membrane module is formed on the upper or lower surface of the housing, a first groove having a rectangular cross section along the circumferential direction and one or more first openings between the housing and the first groove. Is formed so that the purified water passing through the filter unit of the membrane module is moved to the treated water moving pipe through the first opening. The method of claim 1, wherein the two open membrane module connection portion It consists of a hollow cylindrical both side open membrane module connection housing for forming the appearance of the module connection, the second inner passage provided on the central axis of the module connection housing so that the raw water passed through the interior of the membrane module, Upper and lower sides of both open membrane module connection parts housings contacting the potting part of the separator module are formed with a second groove having a rectangular cross section along the circumferential direction, and one or two or more second openings are formed between the housing and the second groove. And the purified water passing through the filter unit of the separation membrane module is moved to the treated water moving tube through the second opening. The method according to any one of claims 1 to 3, It is further provided with an inverted cylindrical flow path deformation portion connected to the raw water inlet pipe in the membrane module and having a plurality of holes at the bottom and the side thereof so that the raw water supplied through the raw water inlet pipe can flow upward and sideways. Laminated membrane separation system, characterized in that. The method of claim 1, 2-O-ring is provided in the contact portion of the raw water inlet pipe of the separator module and the first inner passage pipe of the one side open membrane module connection portion or the contact portion of the membrane module housing and the one side open membrane module connection portion housing Stacked membrane separation system. The method of claim 1, The contact portion of the raw water inlet pipe of the separator module and the second inner passage tube of the open membrane module connecting portion of the both sides or the contact portion of the membrane module housing and the housing module opening of both sides of the membrane module is laminated 2-layered Membrane separation system. The method of claim 1, Laminated membrane separation system, characterized in that the filter unit of the membrane module is provided with a hollow fiber membrane or a pleated filter. Raw water inlet installed so that the raw water can be supplied into the membrane, raw water outlet from which the treated raw water is discharged, one open membrane module connection part connected to the lowest and highest ends of the stacked separator, the treated water outlet being the outlet from which the treated water is discharged, Separator stacking method, characterized in that consisting of the membrane module, the filter unit, both sides of the open separator module connecting portion, which is installed in the connecting portion of the laminated membrane, the potting portion. 12. The method of claim 11, wherein the raw water inlet pipe is installed in the membrane module.