KR101546413B1 - Apparatus for cleaning filtration membrane block and Method for cleaning the same - Google Patents

Abstract

The present invention relates to an apparatus for washing a filtration membrane block and a washing method thereof and, more specifically, to an apparatus for washing the filtration membrane block made up of a plurality of submerged flat membranes and a washing method thereof. The present invention comprises: a filtration membrane block where a plurality of submerged flat membranes are arranged; a spray part which is located on an upper part of the filtration membrane block and sprays high pressure water between the submerged flat membranes; and a cylinder part which is connected to an upper part of the spray part and transports the spray part vertically.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a filtration membrane block cleaning apparatus,

The present invention relates to a filtration membrane block cleaning apparatus and a cleaning method thereof, and more particularly, to a filtration membrane block cleaning apparatus and a cleaning method thereof for cleaning a filtration membrane block composed of a plurality of submerged flat membranes.

Worldwide, interest in water is increasing. The UN study reports that in 2025 a third of the world's population will suffer from water shortages.

For this reason, research and development of water purification technology is actively being carried out for efficient use of water resources of the earth. Particularly, a separation method for seawater desalination using a microfiltration membrane or an ultrafiltration membrane has been popular for purifying industrial water or tap water from river water, ground water, and sewage water or using reverse osmosis membrane for seawater desalination.

However, if the membrane filtration is continued with the raw water, there is a problem that foreign substances such as proteins derived from microorganisms increase in the membrane surface and membrane pores depending on the amount of filtrate, shortening the service life of the filtration membrane or preventing the treated water from being properly filtered.

In order to overcome this, the conventional patent document described in the prior art documents is a method of cleaning a separation membrane module in which raw water containing particles having a higher hardness than a separation membrane is mixed and stirred with an inorganic flocculant and then filtered with a separation membrane, It is possible to effectively reduce the scratch on the surface of the membrane due to the high hardness particles and to suppress the cake filtration resistance derived from the cohesive flocs including the hardness particles on the surface of the membrane when the filtration process is continuously provided, (A) after completion of the filtration, the water on the membrane primary side in the separation membrane module is discharged to the outside of the system, and then (b) the primary side of the membrane in the separation membrane module is diluted with water containing chelating agent (C) water containing the chelating agent on the membrane primary side in the membrane module is discharged to the outside of the system, and finally (d) Discloses a cleaning method of a separation membrane module that discharges backwash water in a separation membrane module while performing reverse pressure cleaning in which pressure washing water is fed from the membrane secondary side of the separation membrane module to the membrane primary side.

However, in the prior art, there has not been disclosed a cleaning technique of a membrane module that performs a washing process suitable for different stages of contamination degree.

Patent Document 1: Korean Patent Laid-Open Publication No. 2014-0033154

SUMMARY OF THE INVENTION The present invention has been conceived to solve the problems of the prior art as described above, and it is an object of the present invention to provide a filtration membrane module capable of efficiently removing foreign substances fixed to a filtration membrane And a cleaning method thereof.

To this end, the filtration membrane block cleaning apparatus according to the present invention comprises: a filtration membrane block having a plurality of submerged flat membranes arranged; A jetting portion provided on the filtration membrane block for jetting high pressure water between the submerged flat membranes; A cylinder portion connected to an upper portion of the injection portion and moving the injection portion up and down; .

And a conveyor unit for conveying the filtration membrane block while supporting the filtration membrane block from below, according to an embodiment of the present invention.

Also, according to an embodiment of the present invention, the filtration membrane block has 10 to 20 dip plates.

According to an embodiment of the present invention, the injection unit includes a spray module having an upper portion connected to a lower portion of the cylinder portion; A plurality of spray nozzles arranged at a lower portion of the spray module; A water pressure valve connected to one side of the injection module and communicating with the injection nozzle to supply high pressure water to the injection nozzle; .

According to an embodiment of the present invention, 9 to 19 injection nozzles are provided, and the high-pressure washing water supplied from the water pressure valve is sprayed downward between the submerged flat membranes.

According to an embodiment of the present invention, the cylinder portion may include a main body formed in a frame structure; A cylinder fixedly connected to the upper center of the body and connected to the lower portion of the injection portion; A pneumatic valve provided at one side of the main body, the pneumatic valve controlling the pneumatic pressure inside the cylinder; A regulator provided between the cylinder and the air passage of the pneumatic valve for removing moisture from the air introduced by the pneumatic valve; And a guide provided at least one outside the cylinder, the guide guiding the upward and downward movement of the cylinder; .

To this end, the filtration membrane block cleaning apparatus according to the present invention comprises: a filtration membrane block having a plurality of submerged flat membranes arranged; An insertion portion provided on the filtration membrane block for inserting a flat blade having at least one hole between the submerged flat membranes; A cylinder connected to an upper portion of the insertion portion and vertically moving the injection portion; .

And a conveyor unit for conveying the filtration membrane block while supporting the filtration membrane block from below, according to an embodiment of the present invention.

Also, according to an embodiment of the present invention, the filtration membrane block has 10 to 20 dip plates.

According to an embodiment of the present invention, the inserting unit includes: an insertion module having an upper portion connected to a lower portion of the cylinder portion; A plurality of planar blades arranged at a lower portion of the injection module; And a planar blade guide for guiding upward and downward movement of the planar blade, wherein the planar blade is inserted into a part between the submerged flat films or inserted into the whole.

According to an embodiment of the present invention, 9 to 19 of the planar blades are provided, and the thickness of the planar blades is equal to or less than a distance between the planar blades.

To this end, the filtration membrane block cleaning apparatus according to the present invention comprises: a filtration membrane block having a plurality of submerged flat membranes arranged; An injection spraying part provided on the filtration membrane block for injecting a high pressure water into a plurality of nozzles provided on both sides of the flat blade and inserting a flat blade between the submerged flat membranes; And a cylinder portion connected to an upper portion of the insertion injection portion and moving the injection portion up and down; .

And a conveyor unit for conveying the filtration membrane block while supporting the filtration membrane block from below, according to an embodiment of the present invention.

Also, according to an embodiment of the present invention, the filtration membrane block has 10 to 20 dip plates.

According to an embodiment of the present invention, the insertion portion may include an insertion injection module having an upper portion connected to a lower portion of the cylinder portion; A plurality of flat spray inserts arranged at a lower portion of the insert injection module; And a flat insertion-type injection blade guide for guiding the up-and-down movement of the flat-type insertion injection blades; And the flat insertion-type injection blades are partly inserted or entirely inserted between the submerged flat membranes.

According to an embodiment of the present invention, the insert injection blades include: an inner plate having a plurality of recessed and recessed grooves formed in a longitudinal direction on an upper surface and a lower surface, respectively; A case having the inner plate inserted therein and having a plurality of nozzles formed on a side thereof; .

To this end, the filtration membrane block cleaning method according to the present invention is a filtration membrane block cleaning method for cleaning according to the first to fourth step contamination degree of a filtration membrane block having a plurality of submerged flat membranes arranged therein, The method comprising: spraying high pressure water between the plurality of submerged flat membranes to remove foreign matter; If the filtration membrane block is contaminated by any one of the second to third steps, a flat-film-like blade is inserted between the submerged flat membranes, and high-pressure water is sprayed from a plurality of nozzles provided on both sides of the flat- Removing; And a step of inserting a flat-film-like blade having at least one hole between the plurality of submerged flat membranes, if it is determined that the filtration membrane block corresponds to the fourth stage contamination, Removing; .

According to an embodiment of the present invention, the first stage contamination is a state where the surface of the submerged flat membrane is yellowish brown and organic contaminants are only advanced, and no foreign matter is solidified between the submerged membrane and the submerged flat membrane.

Meanwhile, according to an embodiment of the present invention, the second-stage contamination is a state in which a certain amount of foreign matter solidified between the contaminants and the separator in a state where the surface of the submerged flat membrane is yellowish brown and the organic matter is attached to the surface thereof is generated.

According to an embodiment of the present invention, the third-stage contamination is a state in which the surface of the submerged flat film has a dark color, and many foreign substances solidified between the contaminants and the separator are generated in a state where the organic and inorganic substances are contaminated.

In addition, according to an embodiment of the present invention, the fourth stage contamination is a state in which the surface of the submerged flat membrane has a dark brown color, the inorganic contamination is progressed in a state where the organic matter and the inorganic material are contaminated with a part of black, A considerable amount of foreign matter is solidified in the state.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings.

Prior to that, terms and words used in the present specification and claims should not be construed in a conventional and dictionary sense, and the inventor may properly define the concept of the term in order to best explain its invention It should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention.

According to various embodiments of the present invention, the filtration membrane block washing apparatus has an effect that the foreign matter can be easily discharged downward by spraying the high-pressure washing water with the foreign matter fixed between the submerged flat membranes.

In addition, according to various embodiments of the present invention, the filtration membrane block cleaning apparatus can easily remove the foreign substances fixed in the gaps formed by the plurality of flat plate-type impregnated flat membranes, and more particularly, There is also an effect that can be removed.

According to various embodiments of the present invention, the filtration membrane block cleaning device pushes the foreign substances fixed in the gaps formed by the submerged flat membrane with a plurality of plate-like insertion spray blades downward, while spraying the side high- It can be removed by car.

Therefore, according to various embodiments of the present invention, the filtration membrane block cleaning apparatus can effectively clean the filtration membrane to suit various degrees of contamination ultimately.

1 is a front view showing a filtration membrane block cleaning apparatus according to a first embodiment of the present invention;
2 is a side view of the filtration membrane block cleaning apparatus shown in FIG.
3 is a perspective view of the filter membrane block shown in Figs. 1 and 2. Fig.
Fig. 4 is a side view showing one side of the jetting portion shown in Fig. 1; Fig.
5 is a front view of the jetting portion shown in Fig.
FIG. 6 is a front view showing a filtration membrane block cleaning apparatus according to a second embodiment of the present invention. FIG.
7 (a) to 7 (c) are side views of various filtration membrane block cleaning apparatuses according to a second embodiment of the present invention.
8 (a) to 8 (c) are side views showing one side of various plate-shaped blades provided in an inserting portion of each filtration membrane block washing apparatus shown in Figs. 7 (a) to 7 (c)
9 is a front view showing a filtration membrane block cleaning apparatus according to a third embodiment of the present invention.
10 (a) to 10 (c) are side views of various filtration membrane block cleaning apparatuses according to a third embodiment of the present invention.
Fig. 11 is an exemplary view showing an insertion jetting edge of an insertion jetting portion provided in each filtration membrane block cleaning device shown in Figs. 10 (a) to 10 (c); Fig.
10 is a side view of the filtration membrane block cleaning apparatus shown in Fig.
11 is a cross-sectional view showing the inside of the insertion injection blade of the injection portion shown in Fig.
12 is a flowchart showing a filtration membrane cleaning method according to a fourth embodiment of the present invention.
13 is a view illustrating a process of washing a filtration membrane block corresponding to a fourth contamination with a filtration membrane block washing apparatus according to a second embodiment of the present invention and then performing a second washing with the filtration membrane block washing apparatus according to the first embodiment of the present invention Fig.
FIG. 14 is an exemplary view showing a process of washing filter membrane blocks corresponding to second to third contaminations with the filtration membrane block cleaning apparatus according to the third embodiment of the present invention. FIG.

BRIEF DESCRIPTION OF THE DRAWINGS The objectives, specific advantages and novel features of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. It should be noted that, in the present specification, the reference numerals are added to the constituent elements of the drawings, and the same constituent elements are assigned the same number as much as possible even if they are displayed on different drawings.

In addition, the singular forms used below include plural forms unless the phrases expressly have the opposite meaning. Throughout the specification, when an element is referred to as "including" an element, it means that it can include other elements as well, without departing from the other elements unless specifically stated otherwise.

The same reference numerals are used for the same members as in Figs. 1 to 14. Fig.

In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

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

FIG. 1 is a front view showing a filtration membrane block cleaning apparatus according to a first embodiment of the present invention, FIG. 2 is a side view of the filtration membrane block cleaning apparatus shown in FIG. 1, and FIG. 3 is a cross- FIG. 4 is a side view showing one side of the injection part shown in FIG. 1, and FIG. 5 is a front view of the injection part shown in FIG.

The filtration membrane block cleaning apparatus 100 according to the present invention includes a filtration membrane block 110, a jetting section 120, a cylinder section 130, and a conveyor section 140.

The filtration membrane block cleaning apparatus 100 constructed as described above according to the first embodiment of the present invention will be described below.

First, the filtration membrane block 110 is started.

Referring to FIG. 3, the filtration membrane block 110 is preferably a pretreatment filtration membrane block using a microfiltration membrane that filters colloidal, supernatant, algae, bacteria, etc. of polluted water.

The filtration membrane block 110 constructed as described above is mounted on each of the flat plate fixing plate 112 and the flat plate fixing plate 112 which are engaged with both ends of a plurality of the submerged flat membranes 111 and the plurality of submerged flat membranes 111, The raw water is flowed into the flow passage 113a formed in the one flow path plate 113 and the raw water is filtered by the dip type spreading sheet 111 so that the flow path of the other flow path plate 113, The process water can be discharged to the flow passage 113a formed in the discharge port 113a.

On the other hand, in the submerged flat membrane 110, sludge-like foreign matter adheres between the submerged flat membranes 111 due to the above-described filtration action, and the strength and fixability of the foreign matter are increased over time.

The contaminated filtration membrane block 110 is conveyed by the conveyor section 140 below the jetting section 120 of the filtration membrane block cleaning apparatus 100.

That is, the conveyor section 140 conveys the filtration membrane block 110 below the jetting section 120. Then, the cylinder part 130 moves the jet part 120 up and down in a fluid manner to fit the size of the jet part 120 and the position of the nozzle.

To this end, the cylinder portion 130 includes a main body 131, a cylinder 132, a pneumatic valve 133, a regulator 134, and a guide 135.

First, the main body 131 is formed in a structure in which various frames are connected by bolts and nuts, and forms the outer shape of the filtration membrane block cleaning apparatus 100. A cylinder 132 is fixed to the upper center of the body 131. The internal pressure of the cylinder 132 is adjusted by a pneumatic valve 133 and the injection part 120 connected to the lower part of the cylinder 132 is moved up and down by the pressure. It is preferable that at least one guide 135 for guiding upward and downward movement of the cylinder 132 is fixed to the main body 131 about the cylinder 132. The cylinder 130 may further include a regulator 134 to remove moisture contained in the air flowing through the pneumatic valve 133.

By the above-described operation, the cylinder part 130 can move the jetting part 120 up and down.

Here, the sprayer 120 includes a spray module 121, a spray nozzle 122, and a water pressure valve 123.

First, the injection module 121 distributes the high-pressure washing water flowing through the water pressure valve 123 to the plurality of injection nozzles 121. The upper part of the injection module 121 is connected to the lower part of the cylinder part 130 and receives the upward and downward movement force from the cylinder part 130. Here, a pipe 124 is further provided at one side of the hydraulic valve 123 to receive high-pressure washing water from a hose (not shown) connected to the other side. It is preferable that the other side of the hose is further provided with a pressure generating means such as a pump (not shown) for applying pressure to the washing water.

1, it is assumed that a pipe 124 is further provided on one side of the water pressure valve 123, but this is merely an example, and in order to simplify the apparatus, the water pressure valve 123, (Not shown).

When the high-pressure washing water is supplied to the plurality of spray nozzles 122, the spray nozzle 122 injects the high-pressure washing water downward. Preferably, the washing water injected by the spray nozzle 122 is injected by being collimated by a gap formed by each of the submerged flat membranes 111 provided in the filtration membrane block 110. Further, in order to prevent the detachment of the washing water jetted from the jetting nozzle 122, the narrower the distance between the jetting nozzle 122 and the dipping-type flat film 111 is, the more preferable.

In the present invention, 10 to 20 dipping-type flat membranes 111 are provided in the filtration membrane block 110, so that the number of gaps formed by each of the dipping-type flat membranes 111 can be from 9 to 19. Therefore, the number of the ejection nozzles 122 of the first embodiment of the present invention may be nine to 19, but is not limited thereto.

As described above, the filtration membrane block cleaning apparatus 100 according to the first embodiment of the present invention can easily discharge the foreign matter downward by spraying the high-pressure washing water with the foreign matter fixed between the submerged flat membranes 111. Next, the filtration membrane block cleaning apparatus 200 according to the second embodiment of the present invention will be described below.

FIG. 6 is a front view showing a filtration membrane block cleaning apparatus according to a second embodiment of the present invention, and FIGS. 7 (a) to 7 (c) 8 (a) to 8 (c) are side views of various filtration membrane block cleaning apparatuses shown in FIGS. 7 (a) to 7 (c) FIG. 6 is a side view showing one side of various plate-shaped blades provided in the filtration membrane block cleaning apparatus according to the second embodiment of the present invention.

6 to 8, a description overlapping with those of FIGS. 1 to 5 will be omitted.

The filtration membrane block cleaning apparatus 200 according to the second embodiment of the present invention shown in FIG. 6 differs from the filtration membrane block cleaning apparatus 200 shown in FIG. 1 in that the structure in which the insertion unit 220 is provided is different from that of the jetting unit 120, There is a difference from the filtration membrane block cleaning apparatus 100 according to the first embodiment of the present invention.

6, the filtration membrane block cleaning apparatus 200 according to the second embodiment of the present invention includes a plurality of flat plate blades 222 instead of the plurality of injection nozzles 122 at the lower portion of the insertion unit 220, Respectively. Therefore, it is preferable that the water pressure valve 123 provided in FIG. 1 is omitted from the filtration membrane block cleaning apparatus 200 according to the second embodiment.

In the filtration membrane block cleaning apparatus 200 according to the second embodiment of the present invention, a plurality of flat plate blades 222 are inserted between the dipping-type flat membranes 111, .

On the other hand, when the flat plate-like blades 222 are inserted between the dipping-type flat films 111, frictional force is generated due to the contact surfaces. Therefore, as shown in FIG. 8, the through hole 222a is provided on the side surface of the flat plate-like blade 222 to induce the foreign matter to flow, and the frictional force can be reduced. Further, a flat-blade-type blade guide 223 for guiding the vertical movement of the flat blade 222 may be further provided. In the second embodiment of the present invention, it is assumed that the flat blade 222 is inserted into a part of the gap of the dipping-type flat film 111, but as shown in Figs. 7B, 7C, 8B, (c), it is possible to adopt a configuration in which it is entirely inserted into the gap formed by the submerged flat membrane 111.

7 (b) and 8 (b), the inserting portion 220A is provided with a pair of right and left plate-like blades, which are located on the upper and lower sides of the submerged flat membrane 111, And can be easily inserted between the first and second plates 111 and 111.

7 (c) and 8 (c), the inserting portion 220B is configured such that even when there are a plurality of fastening regions of the submerged flat membrane 111, (222).

As described above, the filtration membrane block cleaning apparatus 200 according to the second embodiment of the present invention can easily remove the foreign substances fixed in the gap formed by the dipping-type flat membrane 111 by the plurality of flat plate blades 222, It is possible to effectively remove foreign matter having a high degree of strength and high strength. The following is a description of a filtration membrane block cleaning apparatus 300 according to a third embodiment of the present invention in which the first and second embodiments of the present invention are mixed.

FIG. 9 is a front view showing a filtration membrane block cleaning apparatus according to a third embodiment of the present invention. FIGS. 10 (a) to 10 (c) Fig. 11 is a sectional view showing the interior of the insertion injection blade of the insertion injection unit shown in Fig. 9 provided in each filtration membrane block cleaning apparatus shown in Figs. 10 (a) to 10 (c) to be.

First, in the description of Figs. 9 and 11, a description overlapping with the description of Figs. 1 to 8 will be omitted.

9, the filter block cleaning apparatus 300 according to the third embodiment of the present invention is configured such that the structure of the insertion spray unit 320 is the same as that of the filtration membrane block cleaning apparatus 100 according to the first embodiment shown in FIG. And the insertion portion 220 of the filtration membrane block cleaning apparatus 200 according to the second embodiment shown in FIG. 6 are mixed.

9, a filtration membrane block cleaning apparatus 300 according to a third embodiment of the present invention includes a tubular insertion bladder 320 having a plurality of nozzles for spraying high-pressure water on a side surface thereof, (322).

Accordingly, in the filtration membrane block cleaning apparatus 300 according to the third embodiment of the present invention, the insertion blade 322 of the insertion spraying unit 320 is inserted into the gap formed by the dipping-type flat membrane 111, The foreign matter adhering to the gap can be cleaned by the high-pressure water jetted from the side nozzle. Further, an insertion injection blade guide 324 for guiding the upward and downward movement of the insertion injection blade 322 may be further provided.

Referring to FIG. 11 (a), the insertion blade 322 has an inner plate 322a having a plurality of concave-convex grooves a formed in the longitudinal direction on an upper surface and a lower surface. The inner plate 322a thus configured is accommodated in a case 322b having a plurality of nozzles b formed on both sides thereof. Therefore, the injection blade 322 according to the third embodiment of the present invention can jet the high-pressure washing water to the side of the submerged flat membrane 111 through a plurality of nozzles b.

Referring to Figs. 11 (b) and 11 (c), on the other hand, in the same manner as in Figs. 8 (b) and 8 (c) described above, the insertion injection portions 320A and 320B The insert injection bladder structure is shown. Accordingly, the filtration membrane block cleaning apparatus 300 according to the third embodiment of the present invention can wash the various formed filtration membrane blocks in whole or in part.

As described above, in the filtration membrane block cleaning apparatus 300 according to the third embodiment of the present invention, the foreign substances fixed in the gap formed by the dipping-type flat membrane 111 are pushed downward by the plurality of flat plate-like insertion blades 322, The foreign matter can be removed by secondary spraying of the side high-pressure washing water. Next, the filtering membrane block cleaning method (S100) according to the fourth embodiment of the present invention will be described below.

FIG. 12 is a flowchart showing a filtration membrane cleaning method according to a fourth embodiment of the present invention.

Prior to describing FIG. 12, the first to fourth contamination steps of the filtration membrane block 110 will be described.

In the first step, the surface of the submerged flat membrane 111 is a pale yellowish brown color, and only the organic contamination is advanced, and there is no generation of foreign matter solidified between the impurities and the separator.

In order to remove the first stage contamination, it is necessary to remove the foreign contaminants by spraying the high-pressure fresh water without disassembling the filtration membrane block 110 in a state where there is not enough sludge or sludge adhered to the gap between the submerged flat membrane 111, The washing tank is washed with fresh water, for example, for 1 hour. Thereafter, for example, immersion cleaning is generally carried out in a 0.5% NaOCl (12%) cleaning liquid for 8 hours or more without aeration.

In the second step, the surface of the submerged flat membrane 111 is yellowish brown, and a certain amount of foreign matter solidified between the submerged membrane and the submerged flat membrane 111 is formed in a state where the organic matter is attached to the surface.

In order to remove the second stage contamination, the filtration membrane block 110 is disassembled in the state where a dirt or solidified foreign matter is generated in the gap between the submerged flat membrane 111, the high-pressure fresh water is sprayed to remove the contaminants and solidified foreign matter Reassemble. Thereafter, for example, immersion cleaning is generally carried out in a 0.5% NaOCl (12%) cleaning liquid for 8 hours or more without aeration.

In the third step, the surface of the submerged flat membrane 111 has a dark color, and a large amount of foreign matter is solidified between the contaminants and the separator in a state where organic and inorganic contaminants are advanced.

In order to remove the third stage contamination, the filtration membrane module 110 is disassembled in a state where a dirt or solidified foreign matter is generated in the gap between the submerged flat membrane 111 and the high-pressure fresh water is sprayed to remove the contaminants and solidified foreign substances, Assemble.

After completion of the above-mentioned process, immersion cleaning is performed for 8 hours or more without aeration in, for example, NaOCl (12%) 0.5% cleaning solution, followed by physical decomposition washing And after the organic washing process, 0.1mol of citric acid is aerated in the cleaning liquid and is generally immersed for 4 hours or more.

Finally, in the fourth step, the surface of the submerged flat membrane 111 has a dark brown color, and the organic and inorganic contamination is progressed with a part of black. Particularly, the inorganic contamination proceeds so much that the foreign matter solidified between the impurities and the submerged flat membrane 111 It is a condition that has occurred a lot.

In order to remove the contamination of the fourth step, it is necessary to disassemble and clean the immersion type flat film 111 in a state where a contaminant or a solidified foreign matter is generated in the gap of the immersion type flat film 111, but the solidified foreign matter between the immersion type flat films 111 It is impossible to remove only the high-pressure clean water jet. Therefore, it is necessary to remove the foreign substance by using a plate having a predetermined thickness, for example, 5 mm, which is polished with a dongle finish, and the immersion type flat film 111 may be loosened during operation.

After the physical decomposition washing process, for example, the NaOCl (12%) 0.5% cleaning solution was immersed and cleaned for 8 hours or more without aeration, and after the physical decomposition cleaning and the organic cleaning process, a 0.1mol citric acid cleaning solution was aerated Immersed for more than an hour.

As described above, the filtration membrane block 110 performs the different cleaning methods according to the respective contamination steps by dividing the degree of contamination by the first to fourth steps.

In order to remove the contamination of the first to fourth steps of the filtration membrane block 110 in which the plurality of submerged flat membranes 111 are arranged as described above, the filtration membrane block 110 according to the method of FIG. 12 according to the fourth embodiment of the present invention 110).

First, when it is determined that the filtration membrane block 110 corresponds to the first stage contamination, high pressure water is sprayed between a plurality of the submerged flat membranes 111 to remove foreign matter (S110).

In step S110, it is preferable to use the filtration membrane block cleaning apparatus 100 according to the first embodiment of the present invention.

Next, when it is determined that the filtration membrane block 110 is contaminated by any one of the second to third steps, the plate-like blade 322 is inserted between the submerged flat membrane 111 and the plate- The high-pressure water is sprayed to a plurality of nozzles provided on both sides of the nozzle (S120, S130).

In steps S120 and S130, it is preferable to use the filtration membrane block cleaning apparatus 300 according to the third embodiment of the present invention.

On the other hand, when it is determined that the filtration membrane block 110 corresponds to the fourth stage contamination, the plate-like blades are inserted between the plurality of the dip plates 111, and the foreign substances fixed by the insertion pressure of the blades are removed S140).

In step S140, it is preferable to use the filtration membrane block cleaning apparatus 200 according to the second embodiment of the present invention. Therefore, according to the fourth embodiment of the present invention, contamination of the first to fourth steps of the filtration membrane module 110 can be easily removed.

Next, an example in which the filtration membrane block washing apparatuses according to the first to third embodiments of the present invention are used in combination will be described.

13 is a view illustrating a process of washing a filtration membrane block corresponding to a fourth contamination with a filtration membrane block washing apparatus according to a second embodiment of the present invention and then performing a second washing with the filtration membrane block washing apparatus according to the first embodiment of the present invention FIG. 14 is an exemplary view showing a process of washing filter membrane blocks corresponding to the second to third contaminations by the filtration membrane block cleaning apparatus according to the third embodiment of the present invention.

13, the filtration membrane block 110 corresponding to the fourth contamination is first washed with the filtration membrane block cleaning apparatus 200 according to the second embodiment, and then the filtration membrane block cleaning apparatus 100 according to the first embodiment ). ≪ / RTI >

Meanwhile, the second part washing of the filtration membrane block 110 may be omitted by moving the jet part 120 upward by the cylinder part 130 of the filtration membrane block cleaning apparatus 100 according to the first embodiment.

13, the jetting unit 220 of the filtration membrane block cleaning apparatus 200 according to the second embodiment is moved upward to the cylinder unit 130 so that the filtration membrane block cleaning apparatus 100 according to the first embodiment, The filtration membrane block 110 corresponding to the first contamination can be cleaned.

Referring to FIG. 14, the filtration membrane block cleaning apparatus 300 according to the third embodiment of the present invention may be activated to clean the filtration membrane block 110 corresponding to the third contamination.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limiting the scope of the invention as defined by the appended claims. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention.

100, 200, 300: filtration membrane block cleaning device 110: filtration membrane block
111: dip plate 112: flat plate
113: flow path plate 113a:
120: jetting part 130: cylinder part
140: conveyor section 121: injection module
122: injection nozzle 123: water pressure valve
124: pipe 131: body
132: cylinder 133: pneumatic valve
134: regulator 135: guide
220, 220A, 220B: inserting portion 222: flat blade
222a: Through hole 223: Flat blade guide
320, 320A, 320B: Insertion / injection part 322: Plate type insertion injection blade
322a: inner plate 322b: case
324: Insertion Blade Guide

Claims (21)

A filtration membrane block having a plurality of submerged flat membranes arranged therein;
A jetting portion provided on the filtration membrane block for jetting high pressure water between the submerged flat membranes; And
A cylinder portion connected to an upper portion of the injection portion and vertically moving the injection portion; Lt; / RTI >
The cylinder
A body formed in a frame structure;
A cylinder fixedly connected to the upper center of the body and connected to the lower portion of the injection portion;
A pneumatic valve provided at one side of the main body, the pneumatic valve controlling the pneumatic pressure inside the cylinder;
A regulator provided between the cylinder and the air passage of the pneumatic valve for removing moisture from the air introduced by the pneumatic valve; And
A guide provided at least one outside of the cylinder and guiding the up-and-down movement of the cylinder; Containing
Filtration membrane block cleaning device.
The method according to claim 1,
Further comprising a conveyor section for conveying the filtration membrane block while supporting the filtration membrane block from below
Filtration membrane block cleaning device.
The method according to claim 1,
The filtration membrane block
And 10 to 20 immersion type flat films are provided
Filtration membrane block cleaning device.
The method according to claim 1,
The injector
An injection module having an upper portion connected to a lower portion of the cylinder portion;
A plurality of spray nozzles arranged at a lower portion of the spray module; And
A water pressure valve connected to one side of the injection module and communicating with the injection nozzle to supply high pressure water to the injection nozzle; ≪ RTI ID = 0.0 >
Filtration membrane block cleaning device.
The method of claim 4,
9 to 19 injection nozzles are provided,
And the high-pressure washing water supplied from the hydraulic pressure valve is sprayed downward between the submerged flat membranes.
Filtration membrane block cleaning device.
delete A filtration membrane block having a plurality of submerged flat membranes arranged therein;
An insertion portion provided on the filtration membrane block for inserting a flat blade having at least one hole between the submerged flat membranes; And
A cylinder portion connected to an upper portion of the insertion portion and moving the insertion portion up and down; Lt; / RTI >
The insert
An insertion module having an upper portion connected to a lower portion of the cylinder portion;
A plurality of planar blades arranged at a lower portion of the insertion module; And
And a flat plate-shaped blade guide for guiding upward and downward movement of the flat blade,
The planar blade is a structure in which a part is inserted between the submerged flat films
Filtration membrane block cleaning device.
The method of claim 7,
Further comprising a conveyor section for conveying the filtration membrane block while supporting the filtration membrane block from below
Filtration membrane block cleaning device.
The method of claim 7,
The filtration membrane block
And 10 to 20 immersion type flat films are provided
Filtration membrane block cleaning device.
delete The method of claim 7,
Wherein the number of the planar blades is 9 to 19,
The thickness of the flat blade
Is equal to or less than the interval between the submerged flat membranes
Filtration membrane block cleaning device.
A filtration membrane block having a plurality of submerged flat membranes arranged therein;
An injection spraying part provided on the filtration membrane block for injecting a high pressure water into a plurality of nozzles provided on both sides of the flat blade and inserting a flat blade between the submerged flat membranes; And
A cylinder portion connected to an upper portion of the insertion injection portion and vertically moving the injection portion; Lt; / RTI >
The insertion injection unit
An injection spray module in which an upper portion is connected to a lower portion of the cylinder portion;
A plurality of plate-like insert blades arranged at a lower portion of the insert injection module; And
A flat insertion-type spray blade guide for guiding vertical movement of the flat insertion-type injection blade; Lt; / RTI >
The flat insertion-type injection blades are inserted between the submerged flat membranes,
Filtration membrane block cleaning device.
The method of claim 12,
Further comprising a conveyor section for conveying the filtration membrane block while supporting the filtration membrane block from below
Filtration membrane block cleaning device.
The method of claim 12,
The filtration membrane block
And 10 to 20 immersion type flat films are provided
Filtration membrane block cleaning device.
delete The method of claim 12,
The insertion spraying blade
An inner plate having a plurality of concavo-convex grooves formed in the longitudinal direction on the upper surface and the lower surface, respectively; And
A case into which the inner plate is inserted and a plurality of nozzles formed on a side thereof; ≪ RTI ID = 0.0 >
Filtration membrane block cleaning device.
1. A filtration membrane block cleaning method for cleaning according to the degree of contamination of first to fourth stages of a filtration membrane block having a plurality of submerged flat membranes,
A) If the filtration membrane block corresponds to the first stage contamination,
Spraying high-pressure water between the plurality of submerged flat membranes to remove foreign matter;
B) If the filtration membrane block is contaminated by any of the second stage contamination to the third stage contamination,
Removing the foreign matter by inserting a flat blade between the submerged flat films and spraying high pressure water with a plurality of nozzles provided on both sides of the flat blade; And
C) judging that the filtration membrane block corresponds to the fourth stage contamination,
Inserting a flat blade having at least one hole between the plurality of submerged flat membranes and removing the foreign substances fixed by the insertion pressure of the flat blade; Containing
Filter membrane block cleaning method.
18. The method of claim 17,
The first stage contamination of step A)
Characterized in that the surface of the submerged flat membrane is a yellowish brown color, and only the organic contamination is advanced, and a state where a foreign matter solidified between the submerged membrane and the submerged membrane is generated
Filter membrane block cleaning method.
18. The method of claim 17,
The second stage contamination of step B)
Characterized in that the surface of the submerged flat film has a yellowish brown color and a state where a foreign matter solidified between the contaminants and the separation membrane is generated in a state where the organic matter is attached to the surface
Filter membrane block cleaning method.
18. The method of claim 17,
The third stage contamination of step B)
Characterized in that the surface of the submerged flat film has a dull color and a solidified foreign matter is generated between the contaminants and the separating film in a state where contamination of the organic material and the inorganic material proceeds
Filter membrane block cleaning method.
18. The method of claim 17,
The fourth stage contamination of step C)
Characterized in that the surface of the submerged flat membrane has a dark red color and the inorganic contamination proceeds with the organic and inorganic contamination proceeding with a part of black color and a solidified foreign matter is generated between the impurities and the submerged flat membrane
Filter membrane block cleaning method.

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