CN104010716B - Membrane separation method and membrane separation apparatus - Google Patents
Membrane separation method and membrane separation apparatus Download PDFInfo
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- CN104010716B CN104010716B CN201280062646.1A CN201280062646A CN104010716B CN 104010716 B CN104010716 B CN 104010716B CN 201280062646 A CN201280062646 A CN 201280062646A CN 104010716 B CN104010716 B CN 104010716B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/08—Flat membrane modules
- B01D63/082—Flat membrane modules comprising a stack of flat membranes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/08—Flat membrane modules
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
- C02F3/1273—Submerged membrane bioreactors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2315/00—Details relating to the membrane module operation
- B01D2315/06—Submerged-type; Immersion type
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/20—Prevention of biofouling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Activated Sludge Processes (AREA)
Abstract
The present invention provides a membrance separation method and a membrane separation apparatus. Membranes (20, 20) are arranged in rows and bubble guides (30) are disposed between the adjacent flat membranes, and the flat membranes (20) and the bubble guides (30) facing the membranes (20) form a plurality of hollow, closed off sectional structures (50) that extend in the up-down direction and line up in the direction orthogonal to the row arrangement direction. Bubbles created by diffused air are caused to flow into flow channels (60) formed within the closed off sectional structures (50) comprising the flat membranes (20) and the bubble guides (30). In the conventional art, bubbles are caused to flow in wide flow channels between flat membranes facing each other in the parallel direction, and because the bubbles do not come into contact with the entire surface of the membranes, the entire surface cannot be cleaned uniformly with strong force. In comparison to the conventional art, the present invention cleans the entire surface of the membranes efficiently and uniformly with strong force by causing bubbles to flow in the narrow flow channels (60).
Description
Technical field
The present invention relates to a kind of carry out raw water by flat film and process the membrane separating method and membrance separation of the solid-liquid separation of water
Device.
Background technology
In recent years, membrane separation process gets most of the attention in water process.The membrane separation process is referred to used in conventional water process
The method of membrane technology.In membrane separation process, become limpid due to processing water, and do not need sedimentation tank, therefore can obtain
Device integrally becomes the benefit such as compact.
However, but there is a problem of filtering discharge reduction as run time can produce film blocking in membrane separation process.
Therefore, generally carry out being cleaned according to the face of biphase gas and liquid flow.
As the cleaning method of the film according to biphase gas and liquid flow, for example, disclose and filtration be separated into for sludge water will be contained
In the cleaning of the filter membrane of the ultrafilter of water and thickened sludge, sludge is contained to this to ultrafilter sustainable supply while containing sludge water
(for example, referenced patent document is 1) for the cleaning method of the ultrafilter membrane of water intermittent ground supply purge gas.
Conventional art document
Patent documentation
Patent documentation 1：Japanese Unexamined Patent Publication 1-155906 publication
The content of the invention
Invention technical task to be solved
However, in the method for patent documentation 1, existing and cannot give full play to the cleaning force produced by gas, and cannot obtain
Obtain the situation with the cleaning performance of the Dynamic response of input.Accordingly, there exist,
The situation for causing filter capacity to decline.
Especially, in the flat film of spread configuration in the way of relative to each other, and these flat films are put in the groove for accommodating raw water
And raw water and process water are carried out in the impregnated membrane separation of solid-liquid separation, dirt is easily attached to flat film, therefore above-mentioned
Cleaning method in patent documentation 1 is simultaneously imperfect.
In this regard, it is an object of the invention to provide one kind is when membrance separation is carried out using flat film, it is possible to increase to face
Cleaning force, can reduce film blocking, and can obtain the membrane separating method and membrane separation device of the filter capacity of long-time stable.
For solving the means of technical task
Based on the membrane separating method of the present invention, spread configuration in the horizontal direction is impregnated in the groove for accommodate raw water multiple
Flat film and the flat film unit that constitutes, the scattered gas for carrying out gas clean flat film surface and to raw water and process water and carry out
Flat film unit wherein, is set to following constructed dip in groove by solid-liquid separation, i.e., on spread configuration direction adjacent flat film that
Possesses bubbles part between this, the bubbles part possesses with the relative uneven face of flat film and relative with this flat
Film connects, and bubbles part peace film that is relative by these and connecting constitutes the hollow of vertically extending setting
Closed cross sectional structure, and there are on the direction orthogonal with spread configuration direction multiple closed cross sectional structures, using flat film
Solid-liquid separation is carried out to raw water and process water, inside closed cross sectional structure as stream, the bubble produced by dissipating gas will be made
Flow through.
Also, based on the membrane separation device of the present invention, arrangement in the horizontal direction is impregnated in the groove for accommodate raw water and is set
The flat film unit put multiple flat films and constitute, the scattered gas for carrying out gas clean flat film surface and to raw water and process
Water carries out solid-liquid separation, wherein, possesses bubbles part between the adjacent flat film on spread configuration direction of flat film unit,
The bubbles part possesses with the relative uneven face of flat film and the flat film relative with this connects, and passes through these phases
To and the bubbles part peace film that connects constitutes the hollow closed cross sectional structure of vertically extending setting, and with
On the orthogonal direction in spread configuration direction have multiple closed cross sectional structures, become inside closed cross sectional structure by dissipate gas and
The stream flow through by the bubble of generation.
According to this membrane separating method and membrane separation device, arrange between adjacent flat film on spread configuration direction
There is bubbles part, bubbles part by flat film and corresponding thereto is formed in vertically extending and and spread configuration
Be arranged with multiple hollow closed cross sectional structures on the orthogonal direction in direction, by dissipate gas and the bubble that produces will by flat film and
Bubbles part constitute closed cross sectional structure inside flow through as stream, therefore with bubble flow through parallel relative flat film that
Wider stream between this causes the bubble not contact with whole face and can not clean showing for entire surface with uniformly strength
There is technology to compare, flow through the bubble of narrower stream, whole face can effectively be cleaned with uniform strength, its knot
Really, it is possible to increase the cleaning force to face, film blocking can be reduced, and the filter capacity of long-time stable can be obtained.Also,
Bubbles part can be made up of a part for flat film.
Here, the ratio of the gas of stream can be set to 0.4～0.8.Using this structure, due in closed cross sectional structure
Stream in generate deformation state lengthwise and bullet shape bubble, the bubble in the way of pushing with is constituted closed cross-section tie
Rise while the substantially entire surface of the flat film and bubbles part of structure is contacted, with the rising of the bubble, raw water to bubble
Contrary lower section is moved in the small gap with flow velocity faster between bubble and face, thus produces stronger shearing
Power, therefore, it is possible to further improve the cleaning force to face, can further reduce film blocking, and can be further long
Time stable filter capacity.
Invention effect
According to the present invention provide it is a kind of can improve the cleaning force to face, film blocking can be reduced, and can be grown
The membrane separating method and membrane separation device of time stable filter capacity.
Description of the drawings
Fig. 1 be represent apply the present invention the 1st embodiment involved by membrane separating method membrane separation device it is general
Want structure chart.
Fig. 2 is the II-II direction views of Fig. 1.
Fig. 3 is the figure of the relation between the gas ratio and bubble shape of the stream of the closed cross sectional structure for representing hollow.
Fig. 4 is to represent putting down for the membrane separation device for applying the membrane separating method involved by another embodiment of the present invention
The figure of film unit, and be figure corresponding with Fig. 2.
Fig. 5 be represent apply the present invention the 2nd embodiment involved by membrane separating method membrane separation device it is general
Want structure chart.
Fig. 6 is the VI-VI direction views of Fig. 5.
Fig. 7 is the figure of the relation between the gas ratio and bubble shape of the stream of the closed cross sectional structure for representing hollow.
Fig. 8 is to represent putting down for the membrane separation device for applying the membrane separating method involved by another embodiment of the present invention
The figure of film unit, and be figure corresponding with Fig. 6.
Fig. 9 is the figure for representing flat film and flat film unit involved by variation.
Specific embodiment
Hereinafter, the preferred implementation of membrane separating method and membrane separation device based on the present invention is entered with reference to Fig. 1～Fig. 9
Row explanation.In addition, same-sign is marked to identical important document in the drawings, and omit repeat specification.
Fig. 1 is the summary knot for representing the membrane separation device for applying the membrane separating method involved by embodiments of the present invention
Composition, Fig. 2 are the II-II direction views of Fig. 1.
As shown in figure 1, the membrane separation device 100 of the 1st embodiment is known as so-called impregnated membrane separation process (one
Type) device, specifically, flat film unit 10 of the dipping with flat film 20 in the groove 1 for accommodating raw water, by from being disposed in
Diffuser 2 below the flat film unit 10 imposes aeration, while carrying out the cleaning on 20 surface of flat film and the solid-liquid using flat film 20
Separate.It is fed with as compressed air is via mass flow controller 3 thus in diffuser 2 air of scheduled volume.
In the membrane separation device 100 of present embodiment, for example with external-compression type, so-called external-compression type refers to process water from flat
Outside flow direction inner side (direction vertical with paper of Fig. 1) of film 20 type of flow discharged to outside groove 1, here, using logical
The mode that the suction pump 4 being arranged on the pipeline L1 being connected with the top of flat film unit 10 is set to negative pressure and is attracted is crossed, but also may be used
Being so that malleation is pushed and by way of pipeline L1 is discharged.Adopt using tubular film etc. alternatively, it is also possible to replace external-compression type
Inner pressed.
Also, membrane separation device 100 here is for evaluating the device of the cleaning performance of flat film 20, therefore will flow through pipeline L1
Process water it is counter deliver to groove 1 so that the influent density and the water yield in groove 1 becomes constant, but in actual water treatment facilities, raw water
Imported in groove 1 by the pipeline L2 being represented by dotted lines, the separating treatment water from groove 1 is supplied by the pipeline L3 being represented by dotted lines
It is given in the process in rear stage.
As shown in Fig. 2 flat film unit 10 is by flat film 20 and bubbles part 30, and (Fig. 1's is vertical with paper in the horizontal direction
Direction) on alternately spread configuration it is multiple, so as to possess bubbles part 30 between 20 peaceful film 20 of flat film, and will
These keep forming using framework 5, and the upside of framework 5 and downside open.Both sides (left and right sides of Fig. 1) of the framework 5 and front
Rear side (the direction side vertical with paper of Fig. 1) can be closed, it is also possible to open, in a word, as long as spread configuration can be kept
Multiple flat films 20.Also, the top of flat film unit is provided with the collector pipe of the inlet for connecting flat film 20, the collector pipe
It is connected with above-mentioned pipeline L1.
Here, the flat film of present embodiment is to be configured to plane film, can be used in common membrane separation process
Film, can include by the polyolefin resins such as polrvinyl chloride, polyvinylidene fluoride vinyl resin, polyflon, polypropylene,
Perforated membrane of the formation such as polyethylene, polystyrene, polyacrylonitrile, cellulose acetate, polysulfones, polyether sulfone, ceramics etc..
As shown in Fig. 2 bubbles part 30 is configured to waveform shape (substantially sine wave shape), such as by polrvinyl chloride, gather
Ethylene, polypropylene, other generally metal classes such as wide variety of resin or ferrum, rustless steel etc. are formed.
Also, in flat film unit 10, handed over by the bubbles part 30 by above-mentioned plane flat film 20 with waveform shape
For spread configuration (spread configuration on the direction vertical with paper of Fig. 1, the above-below direction of Fig. 2), thus, vertically side is formed
To extended hollow closed cross sectional structure 50, and in the direction (right and left of Fig. 1 orthogonal with spread configuration direction
To the left and right directions of Fig. 2) on be formed with multiple closed cross sectional structures 50, be formed with stream in the closed cross sectional structure 50
60。
In other words, possesses bubble between the adjacent flat film 20 on spread configuration direction of flat film unit 10 and flat film 20
Guide 30, the bubbles part possess with 20 uneven face of relative flat film (relative to relative flat film 20 to hand over
The face that the mode of fork extends) and the flat film 20 relative with this connect, and bubbles part that is relative by these and connecting
30 have multiple above-mentioned hollow closed cross sectional structures 50 and stream 60 with flat film 20, composition.
In addition, in Fig. 2 and Fig. 4 described later, although show the part in flat film unit, but in fact, flat film
And two sides (two sides of left and right directions in figure) of bubbles part further extend, the arrangement of flat film and bubbles part sets
Put also to be alternately arranged on direction (above-below direction in figure) and be provided with multiple flat films and bubbles part.
According to the membrane separation device 100 of said structure, in groove 1, the flat film of the flat film unit 10 by being immersed in groove 1
The envelope that 20 raw waters and process water will be made up of flat film 20 and bubbles part 30 by solid-liquid separation, the bubble produced by dissipating gas
Flowed as stream 60 upward inside closing cross section structure 50.Therefore, between flowing through parallel relative flat film with bubble
Wider stream cause the bubble do not contact with whole face and can not with uniformly strength clean entire surface prior art
Compare, the bubble for flowing through narrower stream 60 can effectively clean whole face with uniform strength.As a result, can improve
Cleaning force to face, can reduce film blocking, and can obtain the filter capacity of long-time stable.
Here, by controlling mass flow controller 3, the gas ratio of the moisture and air of stream 60 is flow through in change, and sees
Confirm cleaning performance while examining bubble shape.Gas ratio is respectively 0.1,0.2,0.4,0.6,0.8,0.9, stream 60
Internal diameter is set to about 10mm.In Fig. 3, (a)～(f) is the figure of the relation between the gas ratio and bubble shape for representing stream 60.
Cleaning performance is especially pronounced in the scope of gas ratio 0.4～0.8.Estimate this is because, (c) in such as Fig. 3～
Shown in (e), the bubble A of the lengthwise and bullet shape that have deformation state, the gas are generated in the stream 60 in closed cross sectional structure 50
A is same with what the substantially entire surface of the flat film 20 and bubbles part 30 that are constituted closed cross sectional structure 50 was contacted in the way of pushing for bubble
Shi Shangsheng, with the rising of bubble A, raw water to the lower section contrary with bubble A with flow velocity faster between bubble A and face
Small gap in move, thus produce stronger shearing force.
Therefore, if the gas ratio of stream 60 is set to 0.4～0.8 as mentioned above, further can improve to face
Cleaning force, can further reduce film blocking, and the filter capacity of further long-time stable can be obtained.
Fig. 4 is to represent putting down for the membrane separation device for applying the membrane separating method involved by another embodiment of the present invention
The figure of film unit, and be figure corresponding with Fig. 2.
Flat film unit 11 in Fig. 4 shown in (a) is by the bubbles part of above-mentioned plane flat film 20 and triangle shape
31 in figure spread configuration alternatively up and down, be consequently formed hollow closed cross sectional structure and using inside the closed cross sectional structure as
Stream 61.
Flat film unit 12 in Fig. 4 shown in (b) is by the bubbles part of above-mentioned plane flat film 20 and saw tooth wave shape
32 in figure spread configuration alternatively up and down, be consequently formed hollow closed cross sectional structure and using inside the closed cross sectional structure as
Stream 62.
Flat film unit 13 in Fig. 4 shown in (c) arranges relative between above-mentioned plane flat film 20 and flat film 20
In the bubbles part 33 that flat film 20 extends along vertical direction and these flat films 20 and flat film 20 are connected to each other, it is consequently formed
Hollow closed cross sectional structure and using inside the closed cross sectional structure as stream 63.
Using this flat film unit 11～13, due to possessing bubble between adjacent flat film on spread configuration direction
Guide, the bubbles part possesses with the relative uneven face of flat film and the flat film relative with this connects, and leads to
The hollow closed cross sectional structure that these bubbles part peace films that are relative and connecting constitute vertically extending setting is crossed,
And there are on the direction orthogonal with spread configuration direction multiple closed cross sectional structures, become inside closed cross sectional structure logical
The stream flowed by the bubble crossed scattered gas and produce, therefore can also use and embodiment identical membrane separating method before
And reach identical effect, effect.Also, the gas ratio of stream be also set to embodiment identical 0.4 before～
0.8, thus reach identical effect, effect.
Hereinafter, the membrane separation device 200 of the 2nd embodiment is illustrated.Here is omitted to the film with the 1st embodiment
The explanation of 100 repeating part of segregation apparatuss.Flat film unit 110 will be arranged in horizontal direction (direction vertical with paper of Fig. 5)
The multiple flat film 120 for arranging keeps forming by framework 105, and the upside of framework 105 and downside open.The both sides of the framework 105
(left and right sides of Fig. 5) and in front and back side (the direction side vertical with paper of Fig. 5) can be closed, it is also possible to open, in a word, as long as
The multiple flat film 120 of spread configuration can be kept.Also, it is provided with the top of flat film unit 110 and connects flat film 120
The collector pipe of inlet, the collector pipe are connected with above-mentioned pipeline L11.
Here, the flat film of present embodiment is to be configured to plane or laminar film, can be in common membrance separation
Film used in method, can include by the polyolefin resins such as polrvinyl chloride, polyvinylidene fluoride vinyl resin, politef tree
The perforated membrane of the formation such as fat, polypropylene, polyethylene, polystyrene, polyacrylonitrile, cellulose acetate, polysulfones, polyether sulfone, ceramics
Deng.
Especially, as shown in fig. 6, the flat film of present embodiment is configured to the film 120 of waveform shape (substantially sine wave shape).And
And, in flat film unit 110, by by the film 120 of waveform shape with by its inverted film 120 be alternately arranged setting (Fig. 5 with
Spread configuration on the vertical direction of paper, the above-below direction of Fig. 6), thus, form the hollow envelope of vertically extending setting
Closing cross section structure 150, and the closed cross sectional structure 150 the direction orthogonal with spread configuration direction (left and right directions of Fig. 5,
The left and right directions of Fig. 6) on be formed with multiple, be formed with stream 160 in the closed cross sectional structure 150.
In other words, in flat film unit 110, adjacent flat film 120,120 on spread configuration direction possess with it is relative
120 uneven face of flat film (relative to the face that relative flat film 120 extends in crossing manner) is simultaneously relative with this flat
Film 120 connects, and thus, consists of with multiple above-mentioned hollow closed cross sectional structures these films 120,120 relative to each other
150 and the structure of stream 160.
In addition, in Fig. 6 and Fig. 8 described later, although show the part in flat film unit, but in fact, flat film
Two sides (two sides of left and right directions in figure) further extend, on the spread configuration direction (above-below direction in figure) of flat film also
It is alternately arranged and is provided with multiple flat films.
According to the membrane separation device 200 of said structure, in groove 101, by forming the flat film unit being immersed in groove 101
The film of 110 closed cross sectional structure 150, carries out solid-liquid separation to raw water and process water, and the bubble produced by dissipating gas will be sealed
Flowed as stream 160 upward inside closing cross section structure 150.Therefore, between flowing through parallel relative flat film with bubble
Wider stream is caused the bubble not contacted with whole face and can not be cleaned the prior art phase of entire surface with uniformly strength
Than the bubble for flowing through narrower stream 160 can effectively clean whole face with uniform strength.As a result, can improve
Cleaning force to face, can reduce film blocking, and can obtain the filter capacity of long-time stable.
Here, by controlling mass flow controller 103, the gas ratio of the moisture and air of stream 160 is flow through in change, and
Confirm cleaning performance while observation bubble shape.Gas ratio is respectively 0.1,0.2,0.4,0.6,0.8,0.9, stream
160 internal diameter is set to about 10mm.In Fig. 7, (a)～(f) is relation between the gas ratio and bubble shape for representing stream 160
Figure.
Cleaning performance is especially pronounced in the scope that gas ratio is 0.4～0.8.Estimate this is because, in such as Fig. 7 (c)
Shown in～(e), in the stream 160 of the inner side for being formed in film annular in shape in closed cross sectional structure 150, generation has deformation state
The film bubble B of lengthwise and bullet shape, bubble B annular in shape in the way of pushing and in closed cross sectional structure 150 is substantially
Rise while entire surface is contacted, with the rising of bubble B, raw water is existed to the lower section contrary with bubble B with flow velocity faster
Move in small gap between bubble B and face, thus produce stronger shearing force.
Therefore, if the gas ratio of stream 160 is set to 0.4～0.8 as mentioned above, further can improve to face
Cleaning force, can further reduce film blocking, and the filter capacity of further long-time stable can be obtained.
Fig. 8 is to represent putting down for the membrane separation device for applying the membrane separating method involved by another embodiment of the present invention
The figure of film unit, and be figure corresponding with Fig. 6.
Film 120 of the flat film unit 111 in Fig. 8 shown in (a) by plane flat film 121 with above-mentioned waveform shape is alternately arranged
Arrange (spread configuration on the direction vertical with paper of above-below direction, Fig. 5 in figure), be consequently formed hollow closed cross-section knot
Structure and using inside the closed cross sectional structure as stream 161.
Flat film unit 112 in Fig. 8 shown in (b) spread configuration on above-below direction in figure by the film 122 of square wave shape,
Be consequently formed hollow closed cross sectional structure and using inside the closed cross sectional structure as stream 162.
Flat film unit 113 in Fig. 8 shown in (c) is being schemed by the film 122 of above-mentioned square wave shape and by its inverted film 122
On middle above-below direction replace spread configuration, be consequently formed hollow closed cross sectional structure and using inside the closed cross sectional structure as
Stream 163.
Flat film unit 114 in Fig. 8 shown in (d) is by the rectangular top of the flat film unit 112 in Fig. 8 shown in (b) to long side
The film 123 of Directional Extension spread configuration on above-below direction in figure, is consequently formed hollow closed cross sectional structure and closes this
As stream 164 inside cross section structure.
Flat film unit 115 in Fig. 8 shown in (e) by Ω shapes in the continuous film of long side direction 124 above-below direction in figure
Upper spread configuration, be consequently formed hollow closed cross sectional structure and using inside the closed cross sectional structure as stream 165.
Flat film unit 116 in Fig. 8 shown in (f) is formed by being formed as the film 125 of the structure similar with honeycomb texture
Hollow closed cross sectional structure and using inside the closed cross sectional structure as stream 166.
Film 126 of the flat film unit 117 in Fig. 8 shown in (g) by above-mentioned plane flat film 121 with triangle shape is being schemed
On middle above-below direction replace spread configuration, be consequently formed hollow closed cross sectional structure and using inside the closed cross sectional structure as
Stream 167.
In addition, Fig. 9 is the figure for representing flat film and flat film unit involved by variation, above-mentioned flat film and flat film can be replaced
Unit and adopt flat film and flat film unit shown in Fig. 9.
Flat film 221 in Fig. 9 shown in (a) is the flat film of the meander in top view.Flat film in Fig. 9 shown in (b)
231 is the flat film for bending at a predetermined angle.Also, the flat film 241 in Fig. 9 shown in (c) is to bend to spiral helicine flat film.Such as
This, can adopt variously-shaped flat film.
Also, the flat film unit 311 in Fig. 9 shown in (d) is arranged with film 321 in groove 301 with being not parallel to each other.In Fig. 9 (e)
Shown flat film unit 411 is attached with circular pleat 421 and angular pleat 431 on flat film 401.So, it is possible using variously-shaped
Flat film unit.In addition, pleat described above can be attached to whole face, it is also possible to be attached to a part for face.
Using 111～117,311,411 or flat film 221,231,241 of this flat film unit, due on spread configuration direction
Adjacent flat film possesses with the relative uneven face of flat film and the flat film opposed with this connects, relative from there through these
Film and constitute the hollow closed cross sectional structure of vertically extending setting, and in the direction orthogonal with spread configuration direction
It is upper that there are multiple closed cross sectional structures, become the stream flowed by the bubble produced by dissipating gas inside closed cross sectional structure
Road, therefore can also use with embodiment identical membrane separating method before and reach identical effect, effect.Also,
The gas ratio of stream is also set to and embodiment identical 0.4～0.8 before, thus reaches identical effect, effect.
More than, specific description is carried out based on embodiment to the present invention, but the present invention has been not limited only to above-mentioned embodiment party
Formula, for example, in the 1st embodiment, describe and flat film unit 10～13 be immersed in groove 1, and same by aeration (scattered gas)
Application in the membrance separation of the so-called impregnated (one-piece type) of the cleaning on Shi Jinhang films surface and solid-liquid separation, but can also answer
For the membrance separation of so-called impregnated (groove divergence type), that is, reactive tank and membrance separation groove is provided separately, by containing in the last stage
After the treated raw water for processing water is imported in reactive tank in the membrance separation groove in stage, special film is carried out simultaneously by dissipating gas
The cleaning on surface and solid-liquid separation.
Also, the membrane separating method involved by a kind of embodiment, impregnates in the horizontal direction in the groove for accommodate raw water
The multiple flat films of upper spread configuration and the flat film unit that constitutes, the scattered gas for carrying out gas clean flat film surface and to original
Water and process water carry out solid-liquid separation, wherein, flat film unit are set to following constructed dip in groove, i.e., in spread configuration direction
Upper adjacent flat film possesses with the relative uneven face of flat film and the flat film relative with this connects, from there through these that
This relative film constitutes the hollow closed cross sectional structure of vertically extending setting, and orthogonal with spread configuration direction
Direction on there are multiple closed cross sectional structures, and using forming the film of closed cross sectional structure to raw water and process water and carry out
Solid-liquid separation, as stream, will flow through the bubble produced by dissipating gas inside closed cross sectional structure.
Also, the membrane separation device involved by a kind of embodiment, impregnates in the horizontal direction in the groove for accommodate raw water
The multiple flat films of upper spread configuration and the flat film unit that constitutes, the scattered gas for carrying out gas clean flat film surface and to original
Water and process water carry out solid-liquid separation, wherein, in flat film unit, on spread configuration direction adjacent flat film possess with it is relative
The uneven face of flat film and the flat film relative with this connect, constitute along the vertical direction from there through these films relative to each other
Extended hollow closed cross sectional structure, and cut with multiple closings on the direction orthogonal with spread configuration direction
Face structure, becomes the stream that the bubble produced by dissipating gas flows through inside closed cross sectional structure.
According to this membrane separating method and membrane separation device, by film relative to each other formed it is vertically extending and
Multiple hollow closed cross sectional structures are arranged with the direction orthogonal with spread configuration direction, using forming the closed cross-section
The film of structure carries out solid-liquid separation to raw water with water is processed, and the bubble produced by dissipating gas will be made inside the closed cross sectional structure
Flow through for stream, thus the wider stream between flowing through parallel relative flat film with bubble cause the bubble not with it is whole
Individual face is contacted and can not be compared with the prior art of uniformly strength cleaning entire surface, flow through the bubble of narrower stream, can
Whole face is effectively cleaned with uniform strength, as a result, the cleaning force to face can be improved, can reduce film
Blocking, and the filter capacity of long-time stable can be obtained.
Here, the ratio of the gas of stream can be set to 0.4～0.8.During using this structure, in closed cross sectional structure it is in
In the stream that the inner side of the film of ring-type is formed, generation has a bubble of the lengthwise and bullet shape of deformation state, and the bubble is pushing
Mode rise while contact with the substantially entire surface of film annular in shape in closed cross sectional structure, with the rising of the bubble,
Raw water is moved in the small gap to the lower section contrary with bubble with flow velocity faster between bubble and face, is thus produced
Stronger shearing force, therefore, it is possible to further improve the cleaning force to face, can further reduce film blocking, and can obtain
To the filter capacity of further long-time stable.
Industrial applicability
The present invention can be used in the membrane separating method and film point for carrying out solid-liquid separation by flat film to raw water and process water
From device.
Symbol description
1st, 101- grooves, 2- diffusers, 3,103- mass flow controllers, 10～13,110～117,311, the flat film lists of 411-
Unit, 20,120～126,221,231, the flat films of 241-, 30～33- bubbles parts, 50,150- closed cross sectional structures, 60～63,
160～167- streams, 100,200- membrane separation devices, A, B- bubble.
Claims (4)
1. a kind of membrane separating method, impregnates the multiple flat films of spread configuration in the horizontal direction in the groove for accommodate raw water and constitutes
Flat film unit, carry out gas scattered gas clean the flat film surface and to the raw water and process water carry out it is solid
Liquid is separated, and the membrane separating method is characterised by,
The flat film unit is set to into following constructed dip in the groove, i.e., adjacent flat film is each other on spread configuration direction
Between possess bubbles part, the bubbles part possesses flat film with the relative uneven face of flat film and relative with this
Connect, and bubbles part peace film that is relative by these and connecting constitutes the hollow envelope of vertically extending setting
Closing cross section structure, and there are on the direction orthogonal with the spread configuration direction multiple closed cross sectional structures,
Solid-liquid separation is carried out to the raw water and the process water using the flat film, using inside the closed cross sectional structure as
Stream, flows through the bubble produced by the scattered gas.
2. membrane separating method according to claim 1, it is characterised in that
The bubbles part is made up of a part for the flat film.
3. membrane separating method according to claim 1 and 2, it is characterised in that
The ratio for flowing through the moisture and the gas of the stream is set to into 0.4～0.8.
4. a kind of membrane separation device, impregnates the multiple flat films of spread configuration in the horizontal direction in the groove for accommodate raw water and constitutes
Flat film unit, carry out gas scattered gas clean the flat film surface and to the raw water and process water carry out it is solid
Liquid is separated, and the membrane separation device is characterised by,
Possesses bubbles part between the adjacent flat film on spread configuration direction of the flat film unit, the bubbles part
Possess with the relative uneven face of flat film and the flat film relative with this connects, and gas that is relative by these and connecting
Bubble guide peace film constitutes the hollow closed cross sectional structure of vertically extending setting, and with the spread configuration
There are on the orthogonal direction in direction multiple closed cross sectional structures,
Become the stream flow through by the bubble produced by the scattered gas inside the closed cross sectional structure.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012000593 | 2012-01-05 | ||
| JP2012-000594 | 2012-01-05 | ||
| JP2012-000593 | 2012-01-05 | ||
| JP2012000594 | 2012-01-05 | ||
| PCT/JP2012/082678 WO2013103083A1 (en) | 2012-01-05 | 2012-12-17 | Membrane separation method and membrane separation apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104010716A CN104010716A (en) | 2014-08-27 |
| CN104010716B true CN104010716B (en) | 2017-03-22 |
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ID=48745146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280062646.1A Expired - Fee Related CN104010716B (en) | 2012-01-05 | 2012-12-17 | Membrane separation method and membrane separation apparatus |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPWO2013103083A1 (en) |
| CN (1) | CN104010716B (en) |
| WO (1) | WO2013103083A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107073401A (en) | 2014-10-22 | 2017-08-18 | 科氏滤膜***公司 | Use the membrane module system and operating method of perineurium sealing cover and intermission aeration |
| USD779631S1 (en) | 2015-08-10 | 2017-02-21 | Koch Membrane Systems, Inc. | Gasification device |
| CN111229042B (en) * | 2020-01-17 | 2021-11-09 | 哈尔滨工业大学 | Antifouling anti-blocking micro-scale ultrafiltration membrane device |
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| WO1995006514A1 (en) * | 1993-09-02 | 1995-03-09 | The Dow Chemical Company | Separation membrane module |
| CN101116797A (en) * | 2006-08-03 | 2008-02-06 | 东丽纤维研究所（中国）有限公司 | Chemical scrubbing method of the flat-plate film |
| CN102101738A (en) * | 2009-12-21 | 2011-06-22 | 东丽纤维研究所（中国）有限公司 | Wastewater treatment process of flat membrane bioreactor and reverse osmosis comprehensive membrane integrated system |
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| JPH0660432U (en) * | 1993-01-26 | 1994-08-23 | 株式会社クボタ | Membrane separation unit |
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| JPH0780488A (en) * | 1993-09-17 | 1995-03-28 | Kubota Corp | Water-treating tank |
| JP3539753B2 (en) * | 1994-04-04 | 2004-07-07 | 株式会社クボタ | Membrane separation unit |
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| JPH0985242A (en) * | 1995-09-27 | 1997-03-31 | Hitachi Plant Eng & Constr Co Ltd | Immersion type film separation device |
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- 2012-12-17 WO PCT/JP2012/082678 patent/WO2013103083A1/en active Application Filing
- 2012-12-17 JP JP2013552402A patent/JPWO2013103083A1/en active Pending
- 2012-12-17 CN CN201280062646.1A patent/CN104010716B/en not_active Expired - Fee Related
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| WO1995006514A1 (en) * | 1993-09-02 | 1995-03-09 | The Dow Chemical Company | Separation membrane module |
| CN101116797A (en) * | 2006-08-03 | 2008-02-06 | 东丽纤维研究所（中国）有限公司 | Chemical scrubbing method of the flat-plate film |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2013103083A1 (en) | 2013-07-11 |
| CN104010716A (en) | 2014-08-27 |
| JPWO2013103083A1 (en) | 2015-05-11 |
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