KR102299939B1 - Submersed membrane filtering apparstus for wastewater treatment - Google Patents

Abstract

The present invention relates to an immersed membrane filtration device for wastewater treatment. The immersed membrane filtration device for wastewater treatment of the present invention includes a single module, a separation membrane module, a partition wall, a spray chamber, a spray guide tube, a foreign material removing plate, and a mesh filter. The present invention can effectively remove foreign materials and increase durability.

Description

SUBMERSED MEMBRANE FILTERING APPARSTUS FOR WASTEWATER TREATMENT}

The present invention relates to an immersion-type membrane filtration device for wastewater treatment that can increase the durability of a membrane module installed in the membrane filtration device.

With the development of industry and population growth, interest in efficient water use and treatment technology is increasing. Recently, in order to secure the stability of water quality in water purification and wastewater treatment processes, the application of separation membrane technology is gradually increasing. There are hollow fiber separation membranes and flat membranes as separation membranes applied to water treatment processes. In the case of hollow fiber separation membranes, the volume per unit area is large, and the manufacturing and cost of modules are relatively easy, so many studies on hollow fiber membranes are being conducted.

Common water treatment membrane materials include Psf (polysulfone), PE (polyethylene), PP (polypropylene), CA (celluloseacetate), PVDF (polyvinylidene fluoride), PTFE (polytetrafluoroethylene), and the like. In the water treatment process where the separator is used, physical and chemical treatment is being carried out to control the contamination of the separator, and this has a problem of shortening the life of the separator. It is widely used as a separator.

However, in the case of a separation membrane module using a hollow fiber membrane, as foreign substances are attached to the outer surface of the hollow fiber membrane during the water treatment process and the filtration ability is deteriorated, there is a problem that it must be periodically controlled.

The conventional hollow fiber membrane has no gap between the hollow fiber membranes or is in close contact with each other as the thin hollow fiber membranes are installed disorderly, so the effect of spraying air or water on the separation membrane module to remove the attached foreign substances is insufficient.

In addition, there is a problem in that the durability of the separation membrane filtration device decreases due to problems such as a decrease in the processing capacity of the separation membrane module or the breakage of the installed hollow fiber membrane during the filtration process, thereby increasing the maintenance cost.

Laid-Open Patent Publication No. 10-2014-0066606, 'Method for manufacturing polyvinyldenum fluoride (PVDF) hollow fiber membrane'

Therefore, it is an object of the present invention to provide an immersion-type separation membrane filtration device for wastewater treatment that effectively removes foreign substances adhering to the outer surface of the hollow fiber membrane installed in the separation membrane module, thereby making maintenance of the separation membrane module easy and preventing deterioration of water treatment capacity. is in doing

The present invention according to the above object is an immersion membrane filtration device for wastewater treatment, the upper and lower fixing parts 12 and 14 for fixing the upper and lower parts of a plurality of hollow fiber membranes 16, and the upper fixing part A hollow fiber membrane 16 is arranged in a line between the 12 and the lower fixing part 14 and is composed of a fixedly installed single module 10, and a plurality of single modules 10 are connected to each other in a state where the neighboring single modules ( 10) The separation membrane module 20 is formed in which a separation space is formed between the cleaning spaces 32 so that foreign substances adhering to the hollow fiber membrane 16 can be efficiently removed during washing, and the separation membrane module 20 is configured. The treated water nozzle 78 is connected and installed by the fastening fixing part 80 at the upper part of the , and the treated water discharged to the treated water nozzle 78 installed in the separation membrane module 20 is discharged through the filtration pipe 70 through the treated water outlet. 72, and the air supplied from the air inlet 74 in the lower portion of the separation membrane module 20 is sprayed from the air nozzle 42 through the air pipe 40 and installed in the separation membrane module 20 A plurality of air nozzles 42 are configured so that foreign substances adhering to the hollow fiber membrane 16 are detached, but the inner bottom of the air pipe 40 is formed to protrude upward to form an air layer on the upper part of the air pipe 40. A partition wall 44 is formed so that air can be uniformly sprayed by allowing the same pressure to act, and the air nozzle 42 is connected to the lower portion of the separation membrane module 20 and is installed to be sprayed by the air nozzle 42 . In order to increase the foreign material removal efficiency of the hollow fiber membrane 16 by the ) is configured, and on the outer surface of the separation membrane filtration device 100, it primarily filters wastewater and protects the hollow fiber membrane 16 installed in the separation membrane module 20, while a mesh for easy cleaning of the separation membrane filtration device 100 It is characterized in that the filter 110 is configured.

The present invention can effectively remove foreign substances attached to the hollow fiber membrane installed in the separation membrane module for wastewater treatment, thereby extending the life of the separation membrane module, and the effect that the water treatment capacity does not decrease during water purification by the separation membrane module there will be

In addition, since it is possible to prevent the hollow fiber membrane installed in the separation membrane module from breaking, there is an effect that can increase the durability.

1 is a view showing the configuration of a single module constituting an immersion-type separation membrane filtration device for wastewater treatment according to an embodiment of the present invention;
2 to 3 are views showing the configuration of an immersion-type separation membrane filtration device for wastewater treatment according to an embodiment of the present invention;
4 is a view showing the cross-sectional configuration of the separator module of the present invention;
5 to 6 are views showing the configuration of a sewage treatment apparatus using the separation membrane module of the present invention;
7 is a view showing the form of the foreign matter removal plate of the present invention,
8 is a view showing a form in which foreign substances attached to the hollow fiber membrane are removed by the foreign material removal plate of the present invention;
9 to 11 are views showing a form in which a mesh filter is installed in the separation membrane filtration device of the present invention;
12 is a view showing the form of the air pipe of the present invention,
13 is a view showing a form in which an air injection induction unit is installed in the lower part of the separation membrane module of the present invention;
14 is a view for explaining the operation configuration of the injection chamber of the present invention;
15 is a view showing the jet flow of air and water by the air injection induction unit of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Prior to the description, the configuration of the membrane filtration device in which the membrane module of the present invention is installed is described in Patent Registration No. 10-1627554, 'Membrane Filtration Device for MBR', so the description will be simplified or omitted.

1 is a diagram showing the configuration of a single module constituting a separation membrane module for wastewater treatment according to an embodiment of the present invention, and FIGS. 2 to 3 are views showing the configuration of a separation membrane module in which a plurality of single modules are combined.

The separation membrane module 20 for wastewater treatment of the present invention includes upper and lower fixing parts 12 and 14 for fixing the upper and lower portions of a plurality of hollow fiber membranes 16, and the upper fixing part 12 and the lower height. The hollow fiber membrane 16 is arranged in a line between the governments 14 and is composed of a fixedly installed single module 10, and a plurality of single modules 10 are connected and installed to configure the separation membrane module 20, but the adjacent single A spaced space is formed between the modules 10 to form a cleaning space 32 that allows foreign substances attached to the hollow fiber membrane 16 to be efficiently removed when the separation membrane module 20 is washed.

In the present invention, as shown in FIG. 1, an upper fixing part 12 and a lower fixing part 14 for fixing the upper and lower parts of the hollow fiber membrane 16 are installed, and at this time, the hollow fiber membrane 16 is installed in a line. do.

In the conventional separation membrane module 20, the installed hollow fiber membranes 16 are disorderly installed and are in close contact between neighboring hollow fiber membranes 16 without a spaced interval, so that foreign substances are attached to the hollow fiber membrane 16 as well as the hollow fiber membranes ( 16) There is a problem in that foreign substances are caught in the liver, so that the cleaning of the hollow fiber membrane 16 is not performed smoothly.

In the present invention, a hollow fiber membrane 16 constitutes a single module 10 installed in a line, and a separation membrane module 20 in which a plurality of single modules 10 are connected and installed constitutes a spaced space between adjacent single modules 10. By being formed, the washing water and air can easily flow between the single module 10 for cleaning of the hollow fiber membrane 16 by washing water or air, so that foreign substances adhering to the hollow fiber membrane 16 are easily removed.

Looking at the installation configuration of the single module 10, a plurality of hollow fiber membranes 16 are disposed at a predetermined interval, and an adhesive aid such as a primer is sprayed on the upper and lower ends, and hollow with an adhesive such as PU, PP, etc. The end of the desert 16 is fused and solidified.

The single module 10 is manufactured by cutting the end of the solidified hollow fiber membrane 16 so that the through hole 18 of the hollow fiber membrane 16 is exposed to the outside.

As an embodiment of the present invention, the hollow fiber membrane 16 installed in the separation membrane module 20 may be formed of a PTFE (Polytetrafluoroethylene) material.

4, a spaced space is formed between the single modules 10 in the hollow fiber membrane 16 in which a plurality of single modules 10 are installed, so that washing water for washing the hollow fiber membrane 16 is easily introduced. A washing space portion 32 is formed to enable it.

Looking at the configuration of the separation membrane module 20, a plurality of single modules 10 in which the hollow fiber membrane 16 is installed by the upper and lower fixing parts 12 and 14 are connected and installed, and the upper part of the separation membrane module 20 is processed. An upper cover 26 having a discharge passage 27 for discharging water is installed, and a lower cover 28 is installed in the lower portion.

The water collecting space 30 is formed in the upper part of the separation membrane module 20 by the upper cover 26 , and the filtered water collected by the plurality of hollow fiber membranes 16 is discharged through the discharge passage 27 .

The treated water discharged to the discharge passage (27) is collected by the treated water pipe (78) installed on the upper part of the separation membrane module (20), then moved through the filtering pipe (72) and finally discharged to the treated water outlet (70) do.

At this time, the separation membrane module 20 and the treated water pipe 78 are connected and installed by a fastening part 80, and may be fixedly installed by a sliding fitting method or a screw fastening method.

The inside of the separation membrane module 20 to which a plurality of single modules 10 are connected is between the neighboring single modules 10 as the upper and lower fixing parts 12 and 14 are connected and installed, more precisely, the hollow fiber membrane 16 ), as the washing space 32 is formed between the hollow fiber membranes 16, air washing by air jetting can be effectively performed.

When the separation membrane module 20 is installed, as shown in FIG. 5 , a plurality of separation membrane modules 20 are installed, and air is sprayed by the air nozzle 42 from the lower part to prevent attachment to the hollow fiber membrane 16 . Prevents or removes attached foreign substances.

When the hollow fiber membrane 16 is installed in a disorderly manner, as the adjacent hollow fiber membranes 16 are installed in close contact without a gap, the air or washing water sprayed between the installed hollow fiber membranes 16 cannot penetrate even after air washing, so foreign substances are washed This is not done well, so that the efficiency and durability of the separation membrane module 20 is reduced.

In the case of water treatment by the immersion type membrane module 20, the water treatment capacity may be increased by installing a plurality of hollow fiber membranes 16 to increase the surface area, but due to the characteristics of the separation membrane module 20 used for a long time, it is washed periodically for durability It is also important to increase

In the case of the separation membrane module 20, as it costs a lot to clean or replace in a short cycle due to low durability, the surface cleaning of the hollow fiber membrane 16 is made efficiently so that the water treatment capacity is not deteriorated, and maintenance for cleaning and replacement It is important not to shorten the period.

In the present invention, the cleaning space 32 is formed between the single modules 10 in which the hollow fiber membrane 16 is installed so that the surface of the hollow fiber membrane 16 installed in the separation membrane module 20 can be easily cleaned. As the used air and the washing water easily flow between the hollow fiber membranes 16 , the effect of desorption of foreign substances adhering to the hollow fiber membranes 16 is excellent.

In addition, in the lower fixing part 14, the air injected from the lower part of the separation membrane module 20 is introduced between the hollow fiber membranes 16 and supplied to the washing space part 32 to increase the cleaning efficiency of the hollow fiber membrane 16. An air passage 15 may be formed.

The lower part of the lower fixing part 14 has an open structure so that the injected air can be introduced into the washing space 32 between the hollow fiber membranes 16 through the air passage 15, and accordingly, the air nozzle 42 Since the air injected by the is directly introduced between the hollow fiber membranes 16, the hollow fiber membrane cleaning of the separation membrane module 20 in which a plurality of single modules 10 are installed can be smoothly performed.

In the present invention, a foreign material removal plate 50 is installed at the upper and lower ends of the separation membrane module 20 in order to remove foreign substances from the hollow fiber membrane 16 .

Referring to FIG. 6 , a foreign material removal plate 50 for directly removing foreign substances attached to the hollow fiber membrane 16 is disposed on the upper and lower portions of the separation membrane module 20 installed on the upper cover 26 and the lower cover 28 . installed operatively.

In the sewage treatment process, foreign substances are attached to the outer surface of the hollow fiber membrane 16, and to remove it, washing air or washing water is sprayed together to prevent foreign substances from adhering to the hollow fiber membrane 16 or to remove the attached foreign substances. .

Foreign substances can be removed while the hollow fiber membrane 16 installed vertically is shaken by the sprayed air or washing water. do.

The upper and lower ends of the hollow fiber membrane 16 from which foreign substances are not removed cause a problem in that the hollow fiber membrane 16 is cut as the foreign substances are solidified, which shortens the replacement time of the separation membrane module 20 .

In order to solve this problem, in the present invention, the foreign material removal plate 50 is installed operably up and down on the upper and lower ends of the separation membrane module 20 to remove foreign substances attached to the upper and lower ends of the hollow fiber membrane 16 .

As shown in FIG. 7 , the foreign material removal plate 50 is installed in the form of a plate having a plurality of fitting holes 52 , and the hollow fiber membrane 16 is inserted into the fitting holes 52 , and is vertically disposed as shown in FIG. 8 . It is possible to efficiently remove foreign substances attached to the upper and lower ends of the hollow fiber membrane 16 installed in the separation membrane module 20 while operating as

As an embodiment, the foreign material removal plate 50 installed on the upper and lower ends of the separation membrane module 20 may be installed operably up and down by a transfer screw, etc. While doing so, it is possible to remove foreign substances attached to the hollow fiber membrane 16 .

The foreign material removal plate 50 is preferably formed of a stainless material for corrosion prevention.

9 to 11 is another embodiment of the present invention, the mesh filter 110 may be detachably installed in a form surrounding the outer surface of the separation membrane filtration device 100.

On the outer surface of the separation membrane filtration device 100 of the present invention, the wastewater is primarily filtered by the separation membrane filtration device 100 and the hollow fiber membrane 16 installed in the separation membrane module 20 is formed by various foreign substances contained in the wastewater. A mesh filter 110 to prevent breakage is installed.

As an embodiment, the mesh size of the mesh filter 110 installed in the separation membrane filtration device 100 may be 0.1 to 1 mm.

The mesh filter 110 installed in the separation membrane filtration device 100 may be installed to surround the entire separation membrane filtration device 100 as shown in FIGS. 9 to 10, and in the separation membrane filtration device 100 as shown in FIG. The installed separation membrane module 20 may be individually separated, and the mesh filter 110 may be detachably installed.

When the wastewater is treated by the separation membrane filtration device 100, sludge, animal hair, fine thread, iron thread, etc. contained in the wastewater are attached to the surface of the hollow fiber membrane 16 during the treatment process, and are attached to the hollow fiber membrane 16. When air is sprayed to remove foreign substances, the hollow fiber membrane 16 is shaken left and right.

At this time, the middle portion of the separation membrane module 20 in which the separation membrane hollow fiber membrane 16 is installed can be detached from the attached foreign substances while shaking left and right, but the upper and lower ends of the hollow fiber membrane 16 are in the air from which the hollow fiber membrane 16 is sprayed from the bottom. It is not shaken and is fixed to the separation membrane module 20 .

In this case, the hollow fiber membrane 16 shakes left and right during the detachment process of the hollow fiber membrane 16 in a state in which the sludge, animal hair, thread, etc., fixed to the upper and lower parts of the hollow fiber membrane 16 are attached to the separation membrane module 20 The upper and lower ends of the hollow fiber membrane 16 fixed to the . The upper and lower ends of the hollow fiber membrane 16 are cut as fatigue is accumulated.

That is, by first filtering relatively bulky sludge, animal hair, yarn, etc. by the mesh filter 110 during wastewater treatment, these foreign substances are prevented from being directly attached to the hollow fiber membrane 16 . ) to increase the durability.

When the separation membrane filtration device 100 is washed, after the separation membrane filtration device 100 is removed to the outside, the washing water is sprayed at high pressure to wash it. As the washing is performed, a strong impact is applied to the hollow fiber membrane 16, so that the coating of the hollow fiber membrane 16 is peeled off or, in severe cases, the hollow fiber membrane 16 may be broken, thereby reducing durability.

Moreover, when the separation membrane module 20 is washed, the hollow fiber membrane 16 must be washed one by one, which takes a long time for cleaning and increases the number of working personnel.

In the present invention, since it is possible to wash the foreign substances attached to the mesh filter 110 after lifting the membrane filtration device 100 when washing the separation membrane filtration device 100 , it is easy to clean, and the separation membrane module 20 While protecting the hollow fiber membrane 16 during washing, the time required for washing is also reduced, thereby reducing working manpower and shortening the washing time.

In addition, as the bulky sludge, animal hair, yarn, etc. are primarily filtered by the mesh filter 110 , the cleaning cycle of the hollow fiber membrane 16 may be extended.

In the absence of the mesh filter 110, the hollow fiber membrane 16 must be washed every 6 months, but in the case of primary filtering by the mesh filter 110, there is no deterioration in water treatment ability even after washing every 1 year and 6 months. , so that the service period of the separation membrane module 20 can be extended by about two times or more, thereby reducing the maintenance cost of the separation membrane filtration device 100 .

As the mesh filter 110 installed in the separation membrane filtering device 100 is detachably installed, when the durability of the mesh filter 110 is deteriorated due to long-term use, the installed mesh filter 110 may be replaced and installed.

12 is a view showing the configuration of an immersion-type membrane filtration device 100 in which a plurality of separation membrane modules 20 of the present invention are installed, and a treated water pipe 78 is connected and installed on the upper part of the separation membrane module 20 of the present invention, and , a filtration pipe 72 for discharging the treated water of the separation membrane module 20 installed in plurality is installed.

The filtered water treated in the plurality of separation membrane modules 20 through the filtration pipe 72 is discharged to the treated water outlet 70 .

A holder 90 for supporting the plurality of separation membrane modules 20 is installed in the lower portion of the separation membrane module 20, and the air supplied to the air inlets 74 and 76 in the lower portion of the holder 90 is supplied through an air pipe ( 40) through the air nozzle 42 is installed to be injected into the lower portion of the separation membrane module (20).

In the present invention, the air supplied through the air pipe 40 is installed in a structure in which the air supplied through the air nozzle 42 is sprayed to the lower part of the separator module 20, and at this time, the air pipe 40 is formed to protrude inside the air pipe. A partition wall 44 is installed so that an air layer is formed on the upper portion of the 40 .

When the blower stops working, water flows back into the air pipe through the air nozzle 42, and when the blower is restarted, the air in the air pipe 40 is unevenly distributed due to the resistance of the water flowing back into the blower. and, accordingly, the amount of air injected into the air nozzle 42 located at the end of the air pipe 40 is reduced.

That is, the pressure of the air injected by the plurality of air nozzles 42 is not constant, so where the pressure is low, the air nozzle 42 is clogged, and in order to improve this, the pressure of the blower must be increased. will do

In addition, when the amount of air and the pressure of the air nozzle 42 to be sprayed fall, the desorption action of foreign substances attached to the hollow fiber membrane 16 of the separation membrane module 20 is also decreased, so that the replacement cycle of the separation membrane module 20 must be advanced. This will lead to an increase in maintenance costs.

In the present invention, it is possible to confine the air layer in the upper part of the air pipe 40 by the partition wall 44 installed in the air pipe 40 .

As the air layer is always filled with air, the amount and pressure of air distributed through the installed air nozzles 42 are always kept constant, and even with a small pressure of the air blower, the same amount of air is applied to all of the air nozzles 42. Air pressure works.

As the same pressure is applied to the plurality of air nozzles 42, the clogging of the nozzles due to the pressure reduction of the air nozzles 42 installed at the ends is also reduced, and the efficiency of the blower is also increased.

Referring to FIG. 13 , a spray chamber 60 is installed at a lower portion of the separation membrane module 20 of the present invention to increase the efficiency of removing foreign substances from the hollow fiber membrane 16 by the air sprayed by the air nozzle 42 .

When the configuration of the injection chamber 60 is described with reference to FIG. 14 , the injection chamber 60 is in a state in which water is filled, and the connection pipe 62 for discharging it is injected by the air nozzle 42 in the interior. is installed

As shown in FIG. 14 (a), until the air pressure in the injection chamber 60 reaches a constant level, the pressure of the water filled in the connection pipe 62 is higher than the pressure in the injection chamber 60, and the air is sprayed. won't be supported

As shown in (b) of FIG. 14 , when the air injection by the air nozzle 42 is continuously performed, the pressure of the air filled in the injection chamber 60 is increased and compressed until the state in which the air is filled in the connection pipe 62 . When the pressure in the injection chamber 60 is higher than the external pressure, the water existing in the connection pipe 2 is pushed out, and the compressed air is temporarily released at the timing when the pressure in the injection chamber 60 exceeds the external pressure. It is sprayed out at once.

That is, when the air pressure in the injection chamber 60 is lower than the outside, the air cannot be injected due to the pressure pressed from the outside. is sprayed

When removing foreign substances from the hollow fiber membrane 16 by air jetting, the efficiency of removing foreign substances attached to the hollow fiber membrane 16 is increased when a large amount of air is sprayed at once compared to continuous jetting with a constant injection amount. Even in the present invention, the efficiency of removing foreign substances is maximized by allowing a large amount of air to be sprayed at once at a certain period.

After the air injection is made, the pressure in the injection chamber 60 is lower than the external pressure again, so that water is introduced into the injection chamber, so that the air injection is not performed.

15, the air injected from the injection chamber 60 is dispersed in the upper portion of the injection chamber 60 so that the air is evenly distributed in the lower portion of the separation membrane module 20, and the surrounding water together with the injected air An air injection induction unit 64 may be installed to have the effect of being injected together while being introduced.

The air injection induction unit 64 is installed at the lower end of the separation membrane module 20 to disperse the air injected from the injection chamber 60 so that the air is evenly distributed in the lower portion of the separation membrane module 20, and the injected air and As the surrounding water flows in, it has the effect of being sprayed together.

When this is explained with reference to FIG. 15 , an injection guide pipe 66 through which the injected air is guided is formed inside the air injection guide unit 64 , and the injection guide pipe 66 is formed narrower from the lower part to the middle part. Again, it has a shape that spreads wider toward the lower part of the separation membrane module 20 .

The air injected from the injection chamber 60 is induced to flow through the injection guide pipe 66 formed in the air injection guide unit 64 , and the air injected from the inlet side of the injection guide pipe 66 is directed to the injection guide pipe 66 . As it flows, the surrounding water is sucked together and introduced into the injection guide pipe (66).

Water flowing in with the injection air is mixed with each other in the injection guide pipe 66 and is sprayed, and the flow rate is fast while passing through a venturi pope having a narrow bottleneck section shape after flowing into the injection guide pipe 66 . will lose

Air and water having an accelerated flow rate pass through the bottleneck section, and then air and water can be dispersed and sprayed over the entire lower part of the separation membrane module 20 by the injection guide pipe 66 formed with a wider width. As it is dispersed and discharged in a mixed state, air is sprayed in the form of a diffuser.

That is, as water and air are simultaneously introduced from the lower portion of the separation membrane module 20 and are sprayed, the cleaning effect of the separation membrane module 20 is increased, and even a small amount of air can have a sufficient cleaning effect, and the sprayed air There is also an effect of increasing the agitation capacity in the aerobic tank in which the filtration device is immersed by water and water.

Although specific embodiments have been described in the above description of the present invention, various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be defined by the described embodiments, but should be defined by the claims and equivalents of the claims.

(10)-- Single module (12)-- Upper fixed part
(14)-- Lower fixing part (15)-- Air passage
(16)-- Hollow Fiber Membrane (18)-- Through Hole
(20)-- Membrane module (26)-- Top cover
(27)-- Discharge passage (28)-- Lower cover
(30)-- Water collecting space (32)-- Washing space
(40)-- Air pipe (42)-- Air nozzle
(44)-- bulkhead
(50)-- Foreign matter removal plate (52)-- Fitting hole
(60)-- Injection chamber (62)-- Air injection pipe
(64)-- Air injection guide part (66)-- Injection guide pipe
(70)-- Treated water outlet (72)-- Filtration pipe
(74)(76)-- Air inlet (78)-- Treated water pipe
(80)-- Fastening part (90)-- Cradle
(100)-- Membrane Filtration Device (110)-- Mesh Filter

Claims (4)

In the submerged membrane filtration device for wastewater treatment,
Between the upper and lower fixing parts 12 and 14 for fixing the upper and lower portions of the plurality of hollow fiber membranes 16 formed of PTFE (Polytetrafluoroethylene) material, and the upper fixing part 12 and the lower fixing part 14 The hollow fiber membrane 16 is arranged in a line and consists of a single module 10 fixedly installed,
In a state in which a plurality of single modules 10 are connected and installed, a separation space is formed between neighboring single modules 10 so that foreign substances adhering to the hollow fiber membrane 16 can be efficiently removed during washing. The separation membrane module 20 in which is formed is configured,
The treated water nozzle 78 is connected to the upper part of the separation membrane module 20 installed in multiple numbers by the fastening part 80, and the treated water discharged to the treated water nozzle 78 installed in the separation membrane module 20 is filtered through a pipe ( 70) is configured to be discharged to the treated water outlet 72, and at the lower portion of the separation membrane module 20, air supplied from the air inlet 74 is sprayed from the air nozzle 42 through the air pipe 40, and the separation membrane It is configured such that foreign substances attached to the hollow fiber membrane 16 installed in the module 20 are detached, but the inner bottom of the air pipe 40 is formed to protrude upward to form an air layer on the upper part of the air pipe 40. The partition wall 44 is formed so that the air can be evenly sprayed by allowing the same pressure to act on the air nozzle 42 of
The lower part of the separation membrane module 20 is connected to the air nozzle 42 and is sprayed by the air nozzle 42 to increase the efficiency of removing foreign substances from the hollow fiber membrane 16 by the air sprayed by the air nozzle 42. The injection chamber 60 is configured so that a large amount of internal air can be injected at once through the difference between the internal pressure and the external pressure by air,
The injection chamber 60 is in a state of being filled with water, and the connection pipe 62 for discharging it is injected by the air nozzle 42 inside, and the air supplied through the air pipe 40 is supplied to the air nozzle 42 ) through the injection chamber 60, mixing with water and spraying, so as to increase the efficiency of removing foreign substances attached to the hollow fiber membrane 16 of the separation membrane module 20. The air injection induction unit 64 is configured, Inside the air injection induction unit 64, the water around the air injected through the air nozzle 42 is sucked in and mixed so that it is formed narrower from the inlet to the middle, and then spreads wider toward the lower part of the separation membrane module 20. The injection guide pipe 66 is formed so that it can be injected,
In the upper and lower portions of the separation membrane module 20, a foreign material removal plate 50 for directly removing foreign substances attached to the hollow fiber membrane 16 is installed operably up and down,
On the outer surface of the separation membrane filtration device 100, a mesh filter 110 for facilitating washing of the separation membrane filtration device 100 while protecting the hollow fiber membrane 16 installed in the separation membrane module 20 along with primary filtering of wastewater is provided. An immersion-type separation membrane filtration device for wastewater treatment, characterized in that it is configured.
delete According to claim 1,
The mesh filter 110 is an immersion type membrane filtration device for wastewater treatment, characterized in that it is configured to be installed separately for each membrane module 20 installed in the membrane filtration device 100 .
According to claim 1,
The mesh filter 110 is an immersion membrane filtering device for wastewater treatment, characterized in that it is detachably installed.

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