KR20050116566A - High flux membrane unit for the wastewater treatment - Google Patents

Abstract

The present invention relates to a high efficiency separation membrane unit for wastewater treatment, and more particularly, to a high efficiency immersion type separation membrane unit using a SADF series membrane of PVDF material installed in a bioreaction tank applied as a substitute for a precipitation tank in a membrane integrated biological wastewater advanced treatment method. It is about.

The high-efficiency membrane unit for wastewater treatment according to the present invention is installed as a substitute for a sedimentation tank in a bioreactor, and a membrane support frame for supporting a plurality of membrane elements spaced apart from each other, and a treatment for discharging the treated water filtered through the membrane element. A separator unit comprising a water discharge member, a plurality of diffusers for cleaning the separator elements, and an air inlet member for injecting air into the diffusers, wherein the separator elements are arranged such that the separators are arranged vertically. It is arranged, the upper and lower ends of the separation membrane is installed in communication with each other, both sides of the upper and the lower collecting portion is installed in the vertically communicating support tube, both sides of the upper collecting portion to be discharged filtered water A predetermined discharge hole is formed so that it can be formed; The treated water discharge member is composed of a water collecting pipe installed on both sides of the upper part of the separation membrane support frame, a discharge pipe vertically installed above the water collecting pipe, and a plurality of inflow holes formed on the side surface of the water collecting pipe; The discharge hole of the separation membrane element and the plurality of inlet holes formed on the side surface of the collecting pipe are configured to communicate with each other through a predetermined transparent connection hose.

Description

High flux membrane unit for the wastewater treatment

The present invention relates to a high efficiency separation membrane unit for wastewater treatment, and more particularly, to a high efficiency immersion type separation membrane unit using a SADF series membrane of PVDF material installed in a bioreaction tank applied as a substitute for a precipitation tank in a membrane integrated biological wastewater advanced treatment method. It is about.

In general, membrane bio-reactor (MBR) is a process that combines the membrane technology with the biological reactor for the treatment of wastewater and completely separates biological organic matter and floating microorganisms and treated water by the membrane. As a substitute, microfiltration (MF) membranes and ultrafiltration membranes (UF) are mainly used. The MBF process is divided into Side-Stream MBR and Submerged Type MBR processes. As of 2000, the immersion type MBR method is applied among the 500 MBR methods operating worldwide. 55% of the treatment facilities and 45% of the treatment facilities to which the cyclic MBR method is applied have been increasing in terms of functional and economical immersion type MBR method.

Submerged MBR is mainly applied with plate frame (PF) and hollow fiber membrane (HF: Hollow Fiber), and the commercially available separation membranes include Zenon's PSf and PVDF ZeeWeed series hollow fiber membranes, Mitsubishi Rayon's PE and PVDF HFL, SUR, SADF series hollow fiber membrane, KMS PP, PE fiber hollow fiber membrane Flat membrane etc. of the material are applied.

1 shows a schematic diagram of a conventional bioreactor of a submerged membrane separation treatment method. The submerged MBR method directly immerses a hydrophilic coating treated membrane unit 100 in a bioreactor 3 in a suction pump 5. As an out-in type method of filtering raw water from outside of the membrane into the membrane by using the suction pressure generated, a plurality of membrane elements 140, a membrane support frame 130, and a lower part that support and fix them Separation membrane unit 100 consisting of an acid diffuser device 180 is immersed in the bioreactor 3.

Therefore, wastewater inflow water (1) from which debris such as hair, which directly affects membrane contamination, is introduced into the bioreactor (3) through a pre-treatment immersion facility and a screening facility, and a highly concentrated floating microorganism with a concentration of 5,000 to 15,000 mg / L. The effluent 2 from which contaminants have been removed is solid-liquid separated by the membrane unit 100 installed in the bioreactor 3 and discharged to the suction pump 5. At this time, the membrane unit 100 is fixed to the membrane guide rail (6) installed in the bioreactor 3 is installed at a constant interval height of about 200 ~ 500mm from the bottom of the bioreactor, the suction pump 5 is the membrane unit 100 And to the treatment water pipe (4).

And the oxygen necessary for breathing of the floating microorganism is supplied by the blower (7), the blower (7) to the membrane diffuser device 180 and the air pipe (8) in the lower part of the membrane frame in order to prevent the blockage of the membrane. Connected to the upstream air. At this time, in order to prevent contamination of the membrane, the air velocity of 10 m / sec or more should be maintained to allow the swirl flow 9 to be formed in the bioreactor. If the differential pressure of the membrane rises above a certain level, chemical in-situ cleaning (In- CIP tank 11 is required for line cleaning). And the chemical cleaning pipe 12 is connected to the treatment water pipe (4), when cleaning the chemical pipe valve 13 is configured to open and the suction pipe valve 14 is closed.

On the other hand, the membrane unit 100 is applied to the conventional immersion type MBR method as shown in Figure 2 to 4, the diffuser is installed integrally in the membrane frame 130 and the lower portion of the membrane frame 130 integrally The membrane 170 is divided into a frame 170, the membrane support frame 150 for supporting a plurality of membrane elements 140 spaced apart, and for discharging the treated water filtered through the membrane element 140. It is composed of the treated water discharge member 160. The diffuser frame 170 includes an diffuser support frame 190 for fixing the diffuser device 180 including a plurality of pipe diffuser 181 spaced apart from the floor by a predetermined distance, and air in the pipe diffuser 181. It is configured to include an air inlet member 195 for injecting. At this time, a plurality of diffuser nozzles are formed on the upper surface of the pipe diffuser 181. Meanwhile, reference numeral 151 denotes a side plate installed in the separator frame 130 and the diffuser frame 190.

As shown in FIG. 3, the conventional separation membrane element 140 installs a plurality of hollow fiber membranes in a horizontal direction, and vertically collects the water collecting portion 143 so as to communicate with both left and right ends of the separation membrane 142. The upper end of the water collecting part 143 is fixed to communicate with the bottom surface of the water collecting pipe 162 through which the treated water is discharged, and the lower end of the water collecting part 143 is spaced apart from the horizontal fixing stand 152 by a predetermined interval. At this time, a plurality of fixing holes 153 for fixing the upper end and the lower end of the collecting part 143 are formed at a predetermined interval on the bottom surface of the collecting pipe 162 and the upper surface of the horizontal fixing stand 152. As described above, the conventional membrane element 140 separates each separator element 140 because the collecting pipe 162 is integrally coupled and the collecting pipe 162 is fixed to the membrane support frame 150. It is impossible to remove the structure.

In addition, the separation membrane element 140 of the conventional hollow fiber membrane or flat membrane has a very low treatment efficiency with a flux of flux of 0.1 to 0.4 m 3 / m 2 · day, so that when the hollow fiber membrane is applied, Although the size of the membrane unit is more compact than that of the flat membrane, as shown in FIG. 12, when the conventional membrane unit is applied to a sewage treatment facility having a capacity of 500 m 3 / day, the theoretical residence time of the bioreactor is 3 to 5 hours. Many more than 10 hours of bioreactors are needed, which requires a large area. In addition, a larger number of membrane units should be installed in a treatment facility that treats the same amount of influent, and as the capacity of the treatment facility is increased, a larger number of membrane units must be installed.

In addition, as shown in Figure 4, the conventional membrane diffuser 180 is applied to a number of pipe diffuser 181, which is perforated by the diffuser nozzle 185 of the 3 to 12mm standard uniformly 5,000 to 15,000mg / L When operating a normal wastewater treatment facility in a bioreactor maintained with a high concentration of suspended microorganisms, there is a problem in that the fouling of the membrane itself and the membrane element proceeds rapidly because the normal swirl flow is not formed due to frequent obstruction of the pipe diffuser and the air nozzle. In particular, since the air diffuser nozzle 185 is installed on the upper surface of the pipe diffuser 181, floating microorganisms maintained at a high concentration are introduced through the air diffuser nozzle 185. Therefore, when the conventional membrane unit 100 is applied to a large-capacity wastewater treatment facility with an inflow water treatment capacity of 5,000 m 2 / day or more, an excessive land area is required, and the complexity of the membrane facility and installation of the membrane diffuser device according to the installation of many membrane units are required. Due to the shortening of the cleaning cycle of the membrane due to the blockage, it was practically impossible to apply the conventional membrane unit to a large-capacity wastewater treatment facility.

In addition, conventionally, the diffuser device applied to the immersion type MBR process uniformly applies a pipe diffuser in which a diffuser nozzle of a predetermined size is formed. Considering that it is ˜12%, the immersion type MBR process has a problem that the air consumption increases by 2 to 5 times compared to the standard activated sludge method, and the air blowing facility is increased. The problem is that nitrogen removal efficiency due to denitrification is lowered due to high dissolved oxygen due to excessive aeration due to the amount of air required by floating microorganisms. However, in the conventional membrane unit, the membrane frame and the diffuser frame are integrally fixed. Depending on the site conditions, it was impossible to reduce the dissolved oxygen by flexibly exchanging the organs.

The present invention is derived to solve the problems of the prior art, the main object of the present invention is a long durability and high chemical resistance in place of the conventional low efficiency membrane PE, PP, PSf, PES, polyolefin-based hollow fiber membrane and flat membrane It is to provide a highly efficient membrane unit for wastewater treatment, which can treat up to 100 ~ 1,000㎥ / SET · day of discharged water per membrane unit by applying SADF-based high efficiency membrane of PVDF material.

In addition, the present invention by applying a high-efficiency membrane element in which a plurality of membranes are arranged vertically to minimize the bioreactor capacity, not only to reduce the site requirements, but also easy to install the membrane element to simplify the maintenance of the membrane facility It is to provide a high-efficiency membrane unit for wastewater treatment to prevent the blockage of the diffuser and to prevent problems caused by excessive aeration by making it easy to apply, and to apply various types of diffuser in accordance with the characteristics of the influent.

In order to achieve the above object of the present invention, the high-efficiency separation membrane unit for wastewater treatment according to the present invention is installed in place of a sedimentation tank in a bioreactor, the separation membrane support frame for supporting a plurality of separation membrane elements and the separation membrane element In the separation membrane unit comprising a treatment water discharge member for discharging the treated water filtered through the through, a plurality of diffusers for cleaning the separation membrane element, and an air inlet member for injecting air into the diffuser;

A plurality of separation membranes are arranged vertically spaced apart at predetermined intervals, the collecting section is installed in the upper and lower ends of the separation membrane, respectively, the support tube is installed in vertical communication with both sides of the upper and the lower collecting portion, A separation membrane element having predetermined discharge holes formed at both sides of the water portion to discharge the filtered water;

A treated water discharge member including a water collecting pipe installed at both sides of the upper part of the separation membrane support frame, a discharge pipe installed vertically above the water collecting pipe, and a plurality of inflow holes formed at the side of the water collecting pipe;

It characterized in that it comprises a transparent connection hose which is installed so that the discharge hole of the membrane element and a plurality of inlet holes formed on the side of the water collecting tube communicate with each other.

The transparent connection hose is a flexible tube, and a predetermined nozzle portion is formed at an end thereof, and is connected to the discharge hole of the separator element and the inlet hole of the collection pipe by a one-touch joint method.

In addition, the membrane frame of the upper portion is installed with a plurality of separators, and the diffuser frame of the lower portion is installed to a plurality of diffuser is detachably installed is configured to selectively adopt a different type of diffuser according to the characteristics of the influent. It is done.

A plurality of spacers are installed at upper and lower fixing bars of the separation membrane support frame at predetermined intervals to fix the separation membrane elements at predetermined intervals, and the separation membrane element is induced on the side of the separation membrane support frame to induce air for cleaning the separation membrane. It characterized in that a plurality of side plates for protection.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the high efficiency separator unit for wastewater treatment according to the present invention.

First, Figure 5 is a perspective view showing a high efficiency separator unit according to the present invention. As shown, the highly efficient membrane unit 10 according to the present invention is largely composed of the upper membrane frame 30 and the lower diffuser frame 70, the separator frame 30 is a plurality of membrane elements (40) ) Is composed of a separation membrane support frame (50) to be spaced apart at predetermined intervals and a treatment water discharge member (60) for discharging the treated water filtered through the separation membrane element (40). The diffuser frame 70 includes an diffuser support frame 90 for supporting a predetermined diffuser device 80 at a predetermined distance from the ground and an air inflow member 95 for injecting air into the diffuser device 80. It consists of).

In the highly efficient membrane unit 10 according to the present invention, the membrane element 40 is a plurality of hollow fiber membranes for filtering raw water from outside the membrane into the membrane, as shown in FIGS. 6 and 7. Upper and lower collecting parts 43 are installed in communication with the separator 42 and the upper and lower ends of the separator 42 vertically installed vertically to collect the treated water filtered from the separator 42. (44) and vertically installed on both sides of the upper and lower collecting parts 43 and 44 to discharge the treated water collected in the lower collecting part 44 to the upper collecting part 43 and to separate the membrane element 40. It consists of a support pipe 46 for supporting the discharge hole 47 formed to discharge the treated water filtered on both sides of the upper collecting portion 43. In this case, the separation membrane 42 has a lifespan of 10 to 20 years, which is more than 2 times higher than that of the conventional separation membrane, and the permeation flux is 0.5 to 1.0 (0.8) m 3 / m 2 · day, which is 2 to 3 times higher than that of the conventional separation membrane. As a separator of PVDF material, its effective pore size is 0.4 mu m. As described above, since the hollow fiber membrane is vertically installed vertically, the membrane element 40 according to the present invention can minimize the contamination of the membrane element because a swirl flow can be formed in the bioreactor with a smaller amount of air.

And the membrane support frame 50 for fixing the membrane element 40 spaced at a predetermined interval is, as shown in Figure 8, the upper and lower horizontal guide 52, the left and right of the horizontal guide 52 A rectangular frame body composed of vertical supports 53 installed on both sides, and a plurality of spaces for fixing the separation membrane elements 40 at predetermined intervals on the bottom surface of the upper horizontal holder 52 and the upper surface of the lower horizontal holder 52. Spacers 55 are provided at predetermined intervals. For example, the interval between the separation membrane elements 40 is only the same amount of air as the conventional cleaning air amount (hollow fiber membrane: 70 to 150 m 3 / m 2 · hr per membrane bottom area, flat membrane: 5 to 20 L / sheet · min). In order to minimize the contamination of the membrane element by forming swirl flow in the bioreactor, it is preferable to maintain the interval of 30 to 60 mm (average: 45 mm). As described above, the membrane support frame 50 according to the present invention can be installed in the slide element separator 40 and is separated from the water collecting pipe 62 of the treated water discharge member to be described later.

Subsequently, the treated water discharge member 60 according to the present invention, as shown in FIGS. 6 and 7, two collecting pipes 62 disposed to be disposed on the upper portion of the upper horizontal holder 52 of the membrane support frame 50. ), A discharge pipe 63 installed vertically so as to communicate with an upper surface of the collection pipe 62, and a plurality of inflow holes 61 spaced apart at predetermined intervals on the side surface of the collection pipe 62. In addition, it is preferable that a predetermined treatment water pipe is installed in each of the discharge pipes 63 of the water collecting pipe 62, but the present invention is not limited thereto, and the plurality of discharge pipes 63 are connected by one treated water header. It is also possible.

In addition, the inflow hole 61 formed on the side surface of the water collecting pipe 62 and the discharge hole 47 formed on both sides of the separation membrane element 40 communicate with each other through the transparent connection hose 57. The transparent connection hose 57 is a flexible tube made of a synthetic resin material, and predetermined nozzle portions 56 are formed at both ends. And the collecting pipe 62 is made of a square or circular pipe or other molded product, the inlet hole 61 formed on the side of the collecting pipe 62, the nozzle portion 56 of the transparent connection hose 57 One-touch joint (One-touch joint) 67 is installed or integrally formed at the time of forming the water collecting pipe 62 so that the one-touch joint can be coupled. As described above, detailed configurations of the nozzle unit 56 and the one-touch joint 67 that are combined in a one-touch manner may be applied in various ways in the art, and thus will be omitted. As described above, the present invention is easy to install because the membrane element 40 and the collecting pipe 62 are connected by the one-touch method using the transparent connection hose 57, and the membrane element 40 can be separated if necessary. Easy to maintain

On the other hand, the side of the membrane support frame 50 is provided with a predetermined side plate (not shown) to induce the separation membrane cleaning air supplied from the lower and to protect the membrane element 40. The side plate is preferably manufactured in a prefabricated manner by fastening means such as bolts and nuts, but is not limited thereto, and may be formed in other ways such as slide or removable.

In addition, a predetermined guide 58 is installed on the front and rear surfaces of the membrane support frame 50 to lift the membrane unit 10, and a predetermined eyebolt I − is disposed on the upper or side surface of the membrane support frame 50. Bolt (59) is preferably installed, but is not limited to this, it is also possible to attach another type of thing. In this case, the guide 58 may be made of an angle or made of a circular tube.

Subsequently, as shown in FIG. 9, the diffuser frame 70 supporting the predetermined diffuser 80 is attached to and detached from the lower portion of the separator frame 30 through the predetermined fastening member. It is possible to install, the diffuser frame 70 is an intermediate horizontal fixture 92 and a plurality of vertical fixtures 93 for supporting the predetermined diffuser device 80 to be spaced apart from the ground by a predetermined distance (93) It consists of a square frame shaped diffuser support frame 90 and an air inlet member 95 for generating compressed air or coarse bubbles by injecting compressed air into the diffuser device 80.

Meanwhile, as shown in FIGS. 10 and 11, the predetermined diffuser 80 according to the present invention has a plurality of bar diffuser devices 82 arranged in parallel with a plurality of bar type diffuser 86. The pipe diffuser 84 in which the pipe type diffuser 81 is arranged in an annular manner between the U-shaped diffuser header 83 can be applied. At this time, the rod-shaped diffuser device 82 has a plurality of rod-shaped diffusers 86 in one linear diffuser header 96 according to the size of the separator unit 10 and the characteristics of the inflowing raw water, as shown in FIGS. 9 and 10. ) Can be installed in parallel, or a plurality of rod-shaped diffusers 86 can be installed in parallel in the two linear diffuser headers 96, respectively. And the air inlet pipe 97 is vertically installed on one side of the straight diffuser header 96. Subsequently, the pipe diffuser 84 is connected to a plurality of pipe diffuser 81 between the U-shaped diffuser header 83 to form a loop, as shown in FIG. 11, but is compressed through an external blower. An air inlet pipe 97 is installed on one side of the U-shaped diffuser header 83 so that air directly flows in the longitudinal direction of one pipe diffuser 81 ′. On the other hand, the diffuser device 80 is detachably installed on the intermediate horizontal stand 92 through a predetermined fastening means. As described above, the present invention can install and detach both the diffuser frame 30 and the diffuser device 80 so that the appropriate diffuser device 80 can be selected and used according to the condition of the inflow water or the site situation.

Subsequently, the pipe diffuser 81 applied to the diffuser 80 according to the present invention has a high concentration of floating microorganisms in the bioreactor to prevent the diffuser from being blocked, as shown in FIGS. 9 and 11. A plurality of diffuser nozzles 85 are formed on the bottom of the pipe diffuser 81. At this time, the acid nozzle (85) is produced by determining the quantity and nozzle spacing so that the air rise rate can be maintained at 10m / sec or more in consideration of the water pressure according to the effective depth of the bioreactor. In particular, the diffuser nozzle 85 makes the diameter of the outer side larger than the diffuser inside to make the sludge inflow difficult, and the external sludge can be easily detached. Meanwhile, the rod-shaped diffuser 86 uses a general standard product having a plurality of fine nozzles formed on an outer circumferential surface thereof.

As described above, the highly efficient membrane unit 10 according to the present invention comprises a membrane of PVDF material having a 2 to 3 times improvement in permeation flux in the vertical direction to form a highly efficient membrane element 40. 40 is spaced apart at predetermined intervals to not only induce smooth swirl flow in the bioreactor, but also to prevent problems caused by excessive aeration, detachable from the diffuser frame 70 and the diffuser device 80 It is installed so that the rod type diffuser (82) or pipe diffuser (84) can be appropriately selected and adopted according to the characteristics of raw water, so that the influent water treatment capacity can be applied to large-capacity wastewater treatment facilities with 5,000 m² / day or more. .

As described above, the present invention provides a plurality of acid nozzles at the bottom of the pipe acid pipe to prevent occlusion of the acid nozzles even in a bioreactor in which a high concentration of floating microorganisms of 5,000 to 15,000 mg / L is maintained. By using), the membrane element 40 and the collecting pipe 62 can be connected in a one-touch manner, and the collecting pipe 62 is installed to separate and install the membrane support frame 50 so as to facilitate installation and maintenance. .

Accordingly, as shown in FIG. 12, when the conventional membrane unit 100 is applied to a sewage treatment facility of 500 m 3 / day, the required area of the site was 72 m 2 (8 mW × 9 mL) on the basis of the batch plane. According to the high efficiency membrane unit 10 for wastewater treatment, the required site area is 23 m 2 (4.8 mW x 4.8 mL), which reduces the required area of about 68% to 32%.

High efficiency membrane unit for wastewater treatment according to the present invention adopts SADF series high efficiency membrane which is long lasting and high chemical resistance PVDF material in place of conventional low efficiency membrane, PE, PP, PSf, PES, Polyolefin series hollow fiber membrane and flat membrane As permeate flow rate is 0.5 ~ 1.0㎥ / ㎡ · day, it is improved by 2 ~ 3 times compared with the conventional separation membrane.Therefore, the membrane unit is installed because fewer membrane units are installed based on the same capacity of inflow water than the conventional immersion type MBR method. Simplification has made it possible to solve maintenance difficulties and to apply it to large-scale wastewater treatment facilities.

In addition, in order to prevent contamination of the membrane, which was a problem when applying the high efficiency membrane unit, the separation element is installed in the vertical direction up and down, and the interval of 30 to 60 mm (typical value: 45 mm) in consideration of economical efficiency and adequacy of the size of the membrane unit. By disposing the membrane element, it is possible to form a smooth swirl flow in the bioreactor with the same amount of air as the conventional cleaning air amount, thereby solving the problem of rapid fouling of the membrane.

In addition, the present invention can selectively apply the rod-shaped diffuser and the annular diffuser formed on the bottom surface of the acid nozzle according to the type of influent and the characteristics of the raw water can prevent the blockage of the membrane diffuser and elastic according to the conditions of the influent It is now possible to apply phosphorus operation and equipment and solve the problems caused by excessive aeration.

In addition, the high efficiency membrane unit according to the present invention can be installed in the slide element of the membrane element and each membrane element can be connected to the water collecting pipe through the transparent connection hose, the membrane support frame and the treated water discharge member is composed of a separate member Therefore, it is easy to install and maintain.

1 is a block diagram showing a bioreactor of a general immersion membrane separation advanced treatment method,

Figure 2 is a perspective view of the immersion membrane unit according to the prior art,

3 is a schematic cross-sectional view showing a separator element and a treated water discharge member and an air diffuser according to the prior art;

4 is a perspective view showing the diffuser frame according to the prior art,

5 is a perspective view showing a high efficiency separator unit according to the present invention;

6 is a schematic cross-sectional view showing a high efficiency membrane element, a treated water discharge member and an air diffuser according to the present invention;

7 is a partially enlarged view showing a treated water discharge member according to the present invention;

8 is a schematic side view showing a membrane support frame according to the present invention;

9 is a perspective view showing the structure of the diffuser frame according to the present invention;

10 is a plan view showing an example of an diffuser according to the present invention;

11 is a plan view showing another embodiment of the diffuser according to the present invention;

12 is a schematic plan view comparing a separator unit according to the prior art and a highly efficient separator unit according to the present invention.

*** Explanation of symbols for main parts of drawing ***

10: high efficiency membrane unit 30: membrane frame

40 separation membrane element 41 separation membrane (hollow fiber membrane)

50: membrane support frame 55: spacer

57: transparent connection hose 60: treated water discharge member

62: collecting pipe 70: diffuser frame

80: diffuser 81: pipe diffuser

82: rod type diffuser 84: pipe diffuser

86: rod type diffuser 90: diffuser support frame

95: air inlet member

Claims (7)

Installed in the bioreactor as a substitute for the sedimentation tank, a membrane support frame for supporting a plurality of membrane elements spaced apart, a treated water discharge member for discharging the treated water filtered through the membrane element, and for cleaning the membrane element A separator unit comprising a plurality of diffusers and an air inlet member for injecting air into the diffusers, A plurality of separation membranes are arranged vertically spaced apart at predetermined intervals, the collecting section is installed in the upper and lower ends of the separation membrane, respectively, the support tube is installed in vertical communication with both sides of the upper and the lower collecting portion, A separation membrane element having predetermined discharge holes formed at both sides of the water portion to discharge the filtered water; A treated water discharge member including a water collecting pipe installed at both sides of the upper part of the separation membrane support frame, a discharge pipe installed vertically above the water collecting pipe, and a plurality of inflow holes formed at the side of the water collecting pipe; And a transparent connection hose installed to allow the discharge hole of the separator element and the plurality of inlet holes formed on the side surface of the collecting pipe to communicate with each other. The method of claim 1, The transparent connection hose has a predetermined nozzle portion at both ends of the flexible tube is connected to the one-touch method through a one-touch joint formed in the inlet of the water collection pipe, high efficiency membrane unit for wastewater treatment. The method of claim 1, The membrane element is a hollow fiber membrane made of PVDF material having excellent durability and chemical resistance, and has a permeation rate of 0.5 to 1.0 m 3 / m 2 · day, and an effective pore size of 0.4 μm. Unit. The method of claim 1, A plurality of spacers are installed at predetermined intervals to fix the separation membrane elements at predetermined intervals on the upper and lower fixing rods of the separation membrane support frame, and induces separation cleaning air on the side of the separation membrane support frame and protects the separation membrane elements. High efficiency membrane unit for wastewater treatment, characterized in that a plurality of side plates for installation. The method according to claim 1 or 4, The separation between the membrane elements installed in the membrane support frame is uniformly fixed to 30 ~ 60mm and the diffuser device at the bottom to supply the cleaning air of 70 ~ 150㎥ / ㎡ · hr per lower cross-sectional area of the membrane Wastewater high efficiency membrane unit. The method of claim 1,  The separator frame of the upper part and the diffuser frame of the lower part of which the diffuser device is installed are detachably installed so as to selectively adopt another type of diffuser device according to the characteristics of the influent. Wastewater high efficiency membrane unit. The method of claim 6, The diffuser device is a high efficiency separator unit for wastewater treatment, characterized in that the rod diffuser device arranged in parallel a plurality of rod-shaped acid pipes or pipe diffuser device arranged in a loop form pipe pipes of 32A or more standard.