CN105682779B - Flat bellows for handling waste water - Google Patents
Flat bellows for handling waste water Download PDFInfo
- Publication number
- CN105682779B CN105682779B CN201480059122.6A CN201480059122A CN105682779B CN 105682779 B CN105682779 B CN 105682779B CN 201480059122 A CN201480059122 A CN 201480059122A CN 105682779 B CN105682779 B CN 105682779B
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- China
- Prior art keywords
- support plate
- film
- film support
- flat bellows
- channel material
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- 239000002351 wastewater Substances 0.000 title claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 70
- 239000011347 resin Substances 0.000 claims abstract description 35
- 229920005989 resin Polymers 0.000 claims abstract description 35
- 239000004744 fabric Substances 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 87
- 238000001764 infiltration Methods 0.000 claims description 40
- 230000008595 infiltration Effects 0.000 claims description 38
- 230000002093 peripheral effect Effects 0.000 claims description 38
- 239000012528 membrane Substances 0.000 abstract description 15
- 238000000926 separation method Methods 0.000 abstract description 5
- 238000004065 wastewater treatment Methods 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 23
- 238000000034 method Methods 0.000 description 15
- 238000010276 construction Methods 0.000 description 14
- 230000009467 reduction Effects 0.000 description 11
- 238000001914 filtration Methods 0.000 description 7
- 239000010802 sludge Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 238000005259 measurement Methods 0.000 description 5
- 230000035699 permeability Effects 0.000 description 5
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 4
- 230000004907 flux Effects 0.000 description 4
- 239000013505 freshwater Substances 0.000 description 4
- 238000005374 membrane filtration Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000012466 permeate Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- -1 polytetrafluoroethylene Polymers 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000001223 reverse osmosis Methods 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 241000588724 Escherichia coli Species 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 238000002604 ultrasonography Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 239000004425 Makrolon Substances 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004695 Polyether sulfone Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000005708 Sodium hypochlorite Substances 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000012489 doughnuts Nutrition 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012510 hollow fiber Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920006393 polyether sulfone Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000028327 secretion Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- B01D63/0822—Plate-and-frame devices
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2313/00—Details relating to membrane modules or apparatus
- B01D2313/14—Specific spacers
- B01D2313/146—Specific spacers on the permeate side
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/006—Cartridges
Landscapes
- 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)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
To provide a flat film box, which can choose to reduce the pressure loss and decrease in the surface membrane of the suction pressure distribution channel material and buffer material, and it can increase the use of low pressure waste water per unit area of the membrane surface processing flow. For a flat film box, wastewater treatment is provided which is made of a resin and relative to the front and back on a drop and makes the edge above the central membrane support plate in the front and back, the membrane along the edge attached to this front and back, to cover the central support plate membrane. In the flat film box: between the central government and the separation membrane support plate, support plate from the film side, the order arrangement channel material and buffer material; channel material is in the horizontal and vertical are 0.5 to 3.2mm, the opening in the horizontal and vertical are 0.4 to 1.0mm diameter the thickness of 0.6 to 2.0mm and 20 to 60% porosity and buffer material with 10 to 110g/m2 fabric unit weight and thickness from 0.1 to 0.5mm.
Description
The technical field of invention
The present invention relates to a kind of flat bellows, it is used for membrane filtration in the device that waste water is handled by membrane filtration and separated.
Background technology
In recent years, the improved background based on world population increase, industrialization, urbanization and the standard of living, for daily
Improved with the requirement of water and the product quality and quantity of industrial water.
In order to keep water resource, except routinely to being utilized from the natural water obtained naturally in addition to, also have wherein sharp
The method of fresh water is prepared from seawater with method of evaporating or counter-infiltration (RO) method, salt solution of the counter-infiltration phenomenon from saliferous is wherein utilized
Prepare method of fresh water etc..However, it has been reported that, freshwater resources present in nature are limited, and also with it
Possibility tend to become narrower due to the influence of extreme climate in recent years.In addition, for using method of evaporating or
Reverse osmosis is prepared for fresh water, and the energy for heating or pressurizeing is necessary, therefore only limited region can profit
Use such means.
As another method to this, a kind of course of action is to recycle sewage.In conventional sewage disposal, make
Degradation treatment is carried out to the organic component in sewage with activated sludge, is then settled, filtered, and the water that will be treated
Discharge, although being also difficult to remove bacterial flora such as Escherichia coli (Escherichia coli) completely.At MBR (membrane bioreactor)
In, the water crossed using separation membrane filtration with active sludge treatment.Therefore, in MBR, above-mentioned harmful bacterium can be removed completely
Group, and also many advantages, such as equipment compactedness and operation be easily controlled so that, in recent years MBR have become by
The technology of a large amount of public attentions.The water for supporting the family with landscape is can be used not only as using the MBR water separated, also can be as non-
Drinking water, and running water can also be provided when being combined with reverse osmosis.In the hyperfiltration using seawater, salt is dealt with
The high pressure of concentration is necessary.When being used as raw water by the MBR treated water prepared, it now is possible to safely and
Water is prepared with low energy.
So, as solving it is believed that the method for the water shortage occurred in future, MBR methods have been obtained for the public's
Note.In order to further improve the method and it is established as to inexpensive high efficiency systems, it is necessary to keep the separating property of film,
While ensuring water permeability.
In addition, when film with the state that is immersed in activated sludge by long-term in use, the hole of film is produced by activated sludge
Raw secretion or its dead volume are blocked in itself, and/or the obstruction such as the impurity contained in sludge, so that water permeability is reduced,
Or to improve pumping pressure to handle obstruction.This is the greatest problem in the use of film, referred to as fouling.For this problem,
Carry out washing the operation of film using chemicals such as sodium hypochlorite and hydrochloric acid, the problem of to solve fouling, so that film is returned to
Fresh state.Therefore, film and box need with the patience for resisting those chemicals and can bear the intensity of back flush.
However, in the washing operation using those chemicals, there is many problems in terms of economy and environment, such as in operation
The stopping of period filtration, the cost of chemicals, trouble, the processing of chemicals waste liquid of work etc..Therefore, maximum class
Topic is to solve how to prevent fouling, and make it that available period is longer so that use the washing operation of chemicals with it is low into
This is minimum.
In order to obtain the amount of more infiltration water through film with smaller power, it is necessary to reduce in film and for passing through
The pressure loss in the passage of the infiltration water of film.In addition, in order to allow suction pressure to efficiently act against on the whole area of film,
Also require imperfect flow of the reduction in for the passage through the infiltration water of film.
At present, the filtering film component on immersion-type, it has been suggested that as disclosed in patent document 1 comprising multiple hollow
The filtering film component of fiber bellows, and such as the filtering film component for including multiple flat bellows disclosed in patent document 2.In
In hollow fiber bellows, the membrane area of unit volume can be made big, and the amount of pending waste water can be made big.However, its
There is a problem in terms of durability, reason is that sludge, pollutant etc. are attached on box, and tends to be deposited in doughnut
Beam among gap in.On the contrary, in flat bellows, it can be ensured that membrane area it is relatively low.However, in sludge and pollutant to film
Attachment and the small this respect of sedimentation on surface have advantage.
On flat membranous type bellows, as proposed in patent document 3, there is such type：Plurality of unlimited slit
It is parallel to lower lateral areas with the upper lateral areas of film support plate on the surface for being arranged in film support plate, meet the collection being communicated at one end with narrow
The mode in pool is arranged.As proposed in patent document 4, also in the presence of such type：Wherein in the film branch with network structure
Hold the passage formd on the inside of plate for the infiltration water through film.
Moreover, in patent document 5, it is proposed that a kind of such flat bellows, wherein being existed based on the infiltration water worked as through film
Exporter flows upward through the pressure loss during gap between seperation film and film support plate (arranging channel material thereon),
The specification of selector channel material.However, in the flat bellows so selected, not accounting for the pressure loss when attracting.As a result
It is to be uprised for suction pump and for the driving load that film washs hair-dryer, so that the cost increase for handling waste water.
Prior art literature
Patent document
Patent document 1：Japanese patent application discloses (JP-A) number 136470/95
Patent document 2：Japanese patent application discloses (JP-A) number 33369/99
Patent document 3：Japanese patent application discloses (JP-A) number 281264/96
Patent document 4：Japanese patent application discloses (JP-A) number 2012-45515
Patent document 5：Japanese patent application discloses (JP-A) number 2001-321766
The content of the invention
Invent problem to be solved
The present invention is to consider the current situation of above-mentioned prior art and carry out, and it is an object of the invention to
A kind of channel material and a kind of padded coaming (vibration-absorptive material) are selected, they, which can reach the reduction pressure loss simultaneously and reduce, divides
From the suction pressure distribution on film surface, and provide a kind of flat bellows, the flat bellows under low dynamics, per membrane area it is useless
Water process flow is big.
The means solved the problems, such as
The present inventor is to suitable for reaching that the channel material and padded coaming of above-mentioned purpose have carried out warmheartedness
Research.As a result, they have found, when using the channel material with specific opening, linear diameter, thickness and porosity and
During padded coaming with specific basis weights and thickness, under the per unit pressure loss, through the stream of the infiltration water of film
Amount increase, as a result, completing the present invention.
Therefore, the present invention includes following composition (1) to (4).
(1) a kind of to be used to handling the flat bellows of waste water, the flat bellows includes the film support plate that resin is made and two points
From film, each in described two seperation films is attached to each in both front and backs of the film support plate
On, wherein, the film support plate is both provided with drop on both its front and backs, to cause the week of the film support plate
Edge region is high compared with the middle section of the film support plate, and each in wherein described seperation film is along described
The peripheral edge margin of film support plate adheres to cover the middle section of the film support plate, it is characterised in that：Described
Between each in the middle section of film support plate and the seperation film, from the film support plate side, passage is sequentially arranged
Material and padded coaming, the resin web as the channel material be respectively provided with machine and transverse direction 0.5 to 3.2mm opening,
In machine and transverse direction with the linear diameter, 0.6 to 2.0mm thickness and 20 to 60% porosity for being 0.4 to 1.0mm,
And the padded coaming has 10 to 110g/m2Basis weights and 0.1 to 0.5mm thickness.
(2) being used for according to (1) handles the flat bellows of waste water, wherein infiltration water is pressed from the outside of the seperation film
The padded coaming, the channel material and be arranged in the film support plate end be used for it is described infiltration water outlet it is suitable
Sequence flows.
(3) being used for according to (1) or (2) handles the flat bellows of waste water, wherein the channel material is plain weave type
Resin web, and the padded coaming is adhesive-bonded fabric.
(4) being used for according to any one of (1) to (3) handles the flat bellows of waste water, wherein the film support plate
The peripheral edge margin than the middle section high 0.6 to 2mm of the film support plate degree, and in the peripheral edge margin and
It is below 0.5mm to arrange the difference in height between the channel material and the middle section of the padded coaming thereon.
Advantages of the present invention
The flat bellows of the present invention uses the resin web with specific opening, linear diameter, thickness and porosity as passage
Material and the adhesive-bonded fabric with specific basis weights and thickness is also used as padded coaming, so as to obtain
The reduction of suction pressure distribution in the reduction and separation membrane surface of the pressure loss.As a result, the infiltration water of per membrane area
Amount increase, and therefore, it now is possible to handle substantial amounts of waste water and complete to operate with low cost low dynamics.
Brief description
Fig. 1 shows the sketch map for being used to handle the composition of the side of the flat bellows of waste water according to the present invention.
Fig. 2 is the schematic diagram of an example of the film support plate with ditch shape passage for showing general type.
The optimal mode carried out an invention
Now with reference to the flat bellows for being used to handle waste water of the brief description of the drawings present invention.
The flat bellows of the present invention has construction as shown in Figure 1, i.e. regard resin web as the cloth of channel material 2
Put in the middle section 5 of film support plate 3, padded coaming 6 is further arranged in thereon, and further along film support plate 3
Peripheral edge margin 4 seperation film 1 is attached thereto.In the present invention, when attracting, seperation film 1 is in and is pulled to channel material 2
The state of side.Therefore the padded coaming 6 for playing film protective effect must be necessarily arranged between seperation film 1 and channel material 2.Attracting
When, although figure 1 illustrates the composition of the only side of the film support plate 3 of flat bellows, in the present invention, in film support plate 3
Both front and backs are upper to set identical to construct.
Reference picture 1 illustrates the flowing of the infiltration water of the film in the flat bellows through the present invention.So, pending solution is made
Contact, and then carried out from the outside of seperation film 1 to the filtering of inner side with the outer surface of seperation film 1.After the filtering of film
Infiltration water by being arranged in padded coaming 6 between seperation film 1 and film support plate 3, and then pass through in channel material 2
Gap, is flowed up in the side for the outlet 7 for permeating water for being attached to one end of film support plate 3, and going out from infiltration water
Mouth 7 is emitted into the outside of flat bellows.
In the flat bellows of the present invention, it is preferred that make central area of the peripheral edge margin 4 than film support plate 3 of film support plate 3
The degree in domain 5 high 0.6 to 2mm.Channel material 2 and padded coaming 6 are arranged in the concave space for the middle section 5 being consequently formed
In.In which case it is preferable that, make thus the caused drop between middle section 5 and peripheral edge margin 4 be 0.5mm with
Under.Padded coaming 6 is arranged to covering and is attached to the channel material 2 of film support plate 3, and is attached to channel material 2.Will separation
Film 1 is attached to peripheral edge margin 4, to cover the film support plate 3 for arranging channel material 2 and padded coaming thereon.
When the thickness (drop from peripheral edge margin 4) of the concave space of the middle section 5 of film support plate 3 is excessive, it is necessary to
Be to make the thickness per a piece of flat bellows big so that the quantity for the box that each film unit can be arranged is reduced.Alternatively, when not
When making the concave space of middle section 5 big in the case of changing thickness, then what is now had to is to make the middle section of film support plate 3
5 is thin, so that the intensity of flat bellows declines.When the thickness of the concave space of the middle section 5 of film support plate 3 is too small, for passing through
The passage of the infiltration water of film becomes narrow, so that the pressure loss is uprised.In addition, when the drop from peripheral edge margin 4 is excessive, hair
Life is due to the disengaging of the damaged or seperation film 1 caused by the bending of the seperation film 1 in drop region.It is preferred, therefore, that film is supported
The middle section 5 and peripheral edge margin 4 of plate 3 have difference in height as implied above.
There is no special limitation for the material of seperation film 1.It can properly select poly- from such as polyvinyl chloride, chlorination
Vinyl chloride, polyether sulfone, the film of polytetrafluoroethylene (PTFE) and their mixture.The thickness of seperation film 1 is preferably 80 to 150 μm.Work as thickness
When spending big, the resistance for permeating water is uprised, so as to reduce water permeability, and when it is excessively thin, there is film-strength becomes
Not enough possibility.
There is no special limitation to the material of film support plate 3, as long as it is with the shape that can keep whole flat bellows
Rigidity.The film from such as ABS resin, vinyl chloride and makrolon can be properly selected.Preferably, film support plate
Size by length and width be respectively 300mm × 200mm to 1,200mm × 550mm, the width of peripheral edge margin for 10mm extremely
20mm, and the thickness of middle section is 2 to 4mm.Drop between the middle section 5 and peripheral edge margin 4 of film support plate 3 can lead to
Cross and form the mode that the board-like material of the peripheral edge margin of film support plate and phase same material adheres to.
In order to meet the function as the passage for permeating water, it is necessary that channel material 2 has in particular range
Opening, linear diameter, thickness and porosity.In commercially available product, it is preferred that for example, using by Nippon Filcon
The resin web of the DOP-18K of manufacture plain weave type.Preferably, channel material 2 is coupled to by envelope support plate well
Peripheral edge margin is in the concave space of formed middle section.Do not have for the material for the resin web as channel material 2
There is special limitation.The film from resin such as polyester and nylon can be properly selected.
It is necessary that the porosity of channel material 2 is 20 to 60%.Porosity is used in channel material 2
The area and the ratio of the gross area of the channel space split shed part of resin web formation, and calculated by following formula.
Porosity (%)={ (opening)2/ [(opening)+(linear diameter)]2}×100
Using in the vertical by the counted porosity of opening and linear diameter of channel material 2 and in the horizontal by channel material
The average value of the 2 counted porosity of opening and linear diameter as channel material 2 porosity.When using have beyond 20 to
During the channel material 2 of the porosity of 60% scope, the imbalance of the distribution of suction pressure in the channel becomes too much, and this causes
The difference of suction pressure on film.Consequently, it is not possible to make whole film effectively work.When the hole of channel material 2 is spent
When big, seperation film 1 is adhered to the open portion of channel material 2 when attracting, and makes channel narrows.In addition, when porosity is small
When, the pressure loss of the infiltration water of the transmission film in channel material 2 becomes big.
On the opening and linear diameter of channel material 2, the opening of vertical and horizontal is both selected from 0.5 to 3.2mm scope, and
And the linear diameter of vertical and horizontal is both selected from 0.4 to 1.0mm scope, thus porosity falls in the range of 20 to 60%.Close
In the thickness of channel material 2, it is necessary that be 0.6 to 2.0mm.When it is less than 0.6mm, for the logical of the infiltration water through film
Road space narrows, so that pressure loss increase.When the thickness of net is more than 2.0mm, the thickness of whole flat bellows in itself becomes big, and
And each the quantity for the box that film unit can be arranged is reduced.
Padded coaming 6 has following functions：Absorb and apply to the stress of seperation film 1；Prevent seperation film 1 due to suction pressure
And it is attached to channel material 2；And protection seperation film 1.On padded coaming 6, the presence or absence of can illustrate yarn fabric, network structure
Body, sponge, rubber, diaphragm etc..In the present invention it is preferred that using adhesive-bonded fabric, it prevents seperation film to be attached to passage material
Material；It is small to permeable resistance；It also has big intensity even if thickness is small；And it can keep shape.Padded coaming 6 is knitted
Thing Unit Weight is preferably 10 to 110g/m2, and the thickness of padded coaming 6 is preferably 0.1 to 0.5mm.Work as basis weights
When too small, do not reach the function as the padded coaming for protecting seperation film 1, and when attracting, seperation film 1 is attached to logical
Road material 2.When basis weights are excessive, cause the pressure loss of the infiltration water through film.Therefore, any one in them
Plant and be all not preferred.On thickness, when it is excessively thin, the function as padded coaming is not reached.When thickness is blocked up, film branch
Hold the peripheral edge margin 4 of plate 3 and the drop of middle section 5 becomes big, this reduces the adhesive force between seperation film 1 and film support plate 3.
Therefore, any of which is all not preferred.Size on padded coaming 6, it is contemplated that prevent seperation film 1 to be attached to
Channel material 2, its area of plane is identical preferably with the area of plane of channel material 2.On the material for adhesive-bonded fabric, do not have
There is special limitation.For example, polyester, polypropylene etc. can be properly selected.
On attachment from seperation film 1 to film support plate 3, as long as the peripheral edge margin 4 of film support plate 3 can be maintained to seperation film
1 attachment state is just much of that.For example, it can be carried out by known method, such as ultrasound attachment and heat attachment.In ultrasound attachment
In the case of, seperation film 1 is arranged as to cover the film support plate 3 for being attached to channel material 2 and the fender on channel material 2
Material 6.Then, it can be exported while the peripheral edge margin 4 of film support plate 3 is pressed onto in seperation film 1 using by loudspeaker (horn)
Ultrasonic vibration seperation film 1 and film support plate 3 are welded.
Outlet 7 for permeating water is arranged in one end of film support plate 3.Its internal diameter be preferably 3 to 6mm, and it
It is preferably 7 to 28mm in the cross section of the opening of inner side2.When the internal diameter of the outlet 7 for permeating water and cross section both greater than with
During upper scope, the thickness of bellows becomes big, so that the quantity for the box that each film unit can be arranged can be reduced.When they be less than with
During upper scope, the pressure loss increase when attracting, and be difficult to realize enough flows for being used to handle.
The pure water FR of the seperation film 1 of the present invention is preferably 15 to 50mL/cm2In the range of/minute/bar.Pure water flux
(flux) (pure water FR) is the volume for the pure water that can pass through in time per unit, unit area and unit pressure, and represents
The water permeability of seperation film 1.When pure water FR is too small, it is necessary that the quantity of the flat bellows of increase increases pressure by pump, with
Ensure the necessary wastewater treatment capacity when carrying out practical application.Therefore, there is huge problem in terms of economy and energy.The opposing party
Face, in order that pure water FR is big, it is necessary that make the aperture of seperation film 1 big.However, when making aperture big, classification performance is deteriorated, and
And the sufficient function as film may not be reached.
By using the construction of the flat bellows of the present invention so that the distribution of suction pressure diminishes, and can be more uniform
Ground uses the film surface as an entirety.It can also reduce the bias current in passage, reduce the pressure loss, and increase and pass through film
Infiltration water flow.Preferably, when the infiltration water through film is logical between seperation film 1 and film support plate 3 by being arranged in
When being flowed up in the passage for permeating water that road material 2 is formed in the side of the outlet 7 of infiltration water, preferably by " thoroughly
Cross the flow (L/h) of the infiltration water of film "/the value of " pressure loss (kPa) " is more than 1.25., can when the value is more than 1.25
So that the attraction power of flat film is suppressed into low-level, and the good stream for wastewater treatment can be so obtained with low dynamics
Amount/per membrane area.
Embodiment
The effect of the flat bellows of the present invention will be shown by embodiment now, although the present invention should not necessarily be limited to this.
In the present invention, the evaluation of characteristic value is in accordance with the following methods.
(1) pure water flux (FR)
Pure water FR is measured by method described below.Seperation film is cut into the circle of 90mm diameters, be arranged on for
In the support of filter, and apply the hydraulic pressure of 0.5 bar, and followed by the water for the transmission collected from the outlet of support in one minute
Amount, pure water flux FR is calculated according to following formula.Water for filtering is 25 DEG C of RO water (by using the water of reverse osmosis membrane filtration).
It is 30 seconds after applying hydraulic pressure between at the beginning of collection.It is adjusted, to cause the height of water level apart from film surface as 3cm
±1cm。
(pure water FR [mL/cm2/ minute/bar])=(Q [mL/ minutes])/(A [cm2])/(P [bar])
(Q：The amount of the water of infiltration in one minute；A：Effective membrane area (=48cm2)；P：Hydraulic pressure (=0.5 bar))
(2) linear diameter of resin web, opening and porosity
Linear diameter (mm), opening (mm) and porosity (%) are measured by method described below.On linear diameter, pass through
Vernier caliper measurement constitutes the diameter of the wire rod of the resin web for channel material 2.On opening, contain ten by slide measure
The length of the part of root wire rod, then deducts the quantity and linear diameter of contained wire rod in above-mentioned part from the length of measurement
Product, and difference is removed into open amount.Porosity is calculated by following formula.
Porosity={ (opening)2/ [(opening)+(linear diameter)]2}×100
Using in the vertical by the counted porosity of opening and linear diameter of channel material 2 and in the horizontal by channel material
The average value of the 2 counted porosity of opening and linear diameter as channel material 2 porosity.
(3) amount for permeating water of film, suction pressure and the pressure loss are passed through
Pass through amount and suction pressure of the method measurement as follows through the infiltration water of film.It is 0.9m, width to provide height
The plastic containers that degree is 0.4m and depth is 0.2m.Then, flat bellows is fixed on the 0.2m from the bottom of plastic containers vertically
The position of height.Pure water is supplied to the degree of the 0.8m height from the bottom of plastic containers so that flat bellows submergence is wherein.
The outlet for being used to permeate water of flat bellows is connected to the pump (roller pump) of the water for pumping pre- basis weights, and with
50rpm revolution carries out suction strainer.Pressure gauge is connected to the midpoint area between flat bellows and pump.During suction strainer, water is kept
Position is constant, and the water temperature in container is maintained at into 25 DEG C.The infiltration water through film is collected from the exit opening of pump.Pass through electronics
Balance measurement passes through the weight (kg/ minutes) of the infiltration water of film, and is translated into using following formula in 25 DEG C of oozing through film
Permeable amount.
Permeate weight (kg/ minutes) × 60 (min)/0.99704 (kg/L) of amount (L/h)=infiltration water of water
Suction pressure is determined from the value indicated when collecting the infiltration water through film by pressure gauge, and is used as flat bellows
The pressure loss (Pa).
(4) basis weights of adhesive-bonded fabric
Using electronic balance, the weight of the adhesive-bonded fabric of 10cm squares is cut into measurement.Amine is calculated from the weight of gained and pressed
Per m2The value of weight meter, so as to provide the basis weights [g/m of adhesive-bonded fabric2]。
(5) thickness of adhesive-bonded fabric
Using thickness gauge, the thickness of adhesive-bonded fabric is measured in randomly selected five points.Nonwoven is used as using its average value
The thickness of fabric.
(embodiment 1)
The bellows with following construction is prepared, to provide the flat bellows for handling waste water.
By the peripheral edge margin (width that each vinyl chloride resin with different-thickness is made：12.5mm) seamlessly adhere to
Film support plate (the height being made to vinyl chloride resin：315mm；Width：On both front and backs 225mm), to prepare
Film support plate, wherein peripheral edge margin are 6mm and peripheral edge margin 1mm higher than middle section degree.Moreover, in film support plate
The penetrating region of rectangle is formed in a part.By the 8mm of the outlet for permeating water in the way of being communicated to insertion area2Cross-sectional area
Nozzle be attached to thereon, to take out treated water.
By the resin web as shown in table 1, (DOP-18K is manufactured by Nippon Filcon；Highly：290mm；Width：
The middle section to film support plate 200mm) is set as channel material, and film is attached to using water-fast adhesive agent and is supported
Plate, to form the passage for being used for the infiltration water through film.The details of resin web is as shown in Table 1.
Film support plate is attached to resin web, and the adhesive-bonded fabric (05TH- that polyethylene terephthalate is made
60, manufactured by HIROSE PAPER MFG CO., LTD.；Highly：285mm；Width：195mm) set as padded coaming to tree
On the upper surface of fat net.The thickness of adhesive-bonded fabric and the details of basis weights are as shown in Table 1.Moreover, by seperation film
(height：305mm；Width：215mm；Thickness：0.13mm) film support plate is seamlessly attached to from the top area of adhesive-bonded fabric
Peripheral edge margin.Similarly, the back side is also attached with seperation film, to provide flat bellows.
Seperation film as used herein has the composition composition of film of chliorinated polyvinyl chloride, 130 μm of thickness, 0.3 μm flat
Equal aperture and 30mL/cm2The pure water FR of/minute/bar.
The details of the flat bellows of embodiment 1 is as shown in Table 1.
(embodiment 2)
The flat bellows with construction in the same manner as in Example 1 is prepared, difference is to make the peripheral edge margin of flat bellows
Than the high 1.2mm of middle section of flat bellows, and use the resin web (DOP-15K, by Nippon that porosity is 26.3%
Filcon is manufactured).The details of the flat bellows of embodiment 2 is as shown in Table 1.
(embodiment 3)
The flat bellows with construction in the same manner as in Example 1 is prepared, difference is to make the peripheral edge margin of flat bellows
Than the high 2.0mm of middle section of flat bellows, and use the resin web (being manufactured by Clever) that porosity is 52.7%.Embodiment
The details of 3 flat bellows is as shown in Table 1.
(embodiment 4)
The flat bellows with construction in the same manner as in Example 1 is prepared, difference is to make the peripheral edge margin of flat bellows
Than the high 1.0mm of middle section of flat bellows, and using porosity be 22.7% and opening be 0.55mm (longitudinal direction) × 0.55mm
The resin web (DOP-15K is manufactured by Nippon Filcon) of (transverse direction).The details of the flat bellows of embodiment 4 such as the institute in table 1
Show.
(embodiment 5 and 6)
The flat bellows with construction in the same manner as in Example 1 is prepared, difference is to use fabric basis weight respectively
Measure as 15g/m2And thickness is 0.12mm adhesive-bonded fabric (Toyobo ecule 3151A) (embodiment 5) and fabric basis weight
Measure as 100g/m2And thickness is used as fender for 0.39mm adhesive-bonded fabric (Toyobo ecule 3A01A) (embodiment 6)
Material.The details of the flat bellows of embodiment 5 and 6 is as shown in Table 1.
(embodiment 7)
The flat bellows with construction in the same manner as in Example 1 is prepared, difference is to make the peripheral edge margin of flat bellows
Than the high 2.0mm of middle section of flat bellows, and use the resin web (OP-16K, by Nippon that porosity is 26.1%
Filcon is manufactured).The details of the flat bellows of embodiment 7 is as shown in Table 1.
(comparative example 1)
The flat bellows with construction in the same manner as in Example 1 is prepared, difference is to make the peripheral edge margin of flat bellows
Than the high 0.5mm of middle section of flat bellows, and use the resin web (DOP-50, by Nippon that porosity is 18.2%
Filcon is manufactured).The details of the flat bellows of comparative example 1 is as shown in Table 1.
(comparative example 2)
The flat bellows with construction in the same manner as in Example 1 is prepared, difference is to make the peripheral edge margin of flat bellows
Than the high 2.0mm of middle section of flat bellows, and use the resin web (being manufactured by Clever) that porosity is 71.8%.Comparative example
The details of 2 flat bellows is as shown in Table 1.
(comparative example 3)
The flat bellows with construction in the same manner as in Example 1 is prepared, difference is to make the peripheral edge margin of flat bellows
Than the high 1.0mm of middle section of flat bellows, and using porosity be 27.3% and opening be 0.42mm (longitudinal direction) × 0.45mm
The resin web (DOP-25F is manufactured by Nippon Filcon) of (transverse direction).The details of the flat bellows of comparative example 3 such as the institute in table 1
Show.
(comparative example 4)
The flat bellows with construction in the same manner as in Example 1 is prepared, difference is to make the peripheral edge margin of flat bellows
Than the high 2.0mm of middle section of flat bellows, and using porosity be 64.0% and opening be 4.00mm (longitudinal direction) × 4.00mm
The resin web (being manufactured by Clever) of (transverse direction).The details of the flat bellows of comparative example 4 is as shown in Table 1.
(comparative example 5,6 and 7)
The flat bellows with construction in the same manner as in Example 1 is prepared, difference is to use fabric basis weight respectively
Measure as 5g/m2And thickness be 0.07mm adhesive-bonded fabric (comparative example 5) and basis weights be 120g/m2And thickness is
0.68mm adhesive-bonded fabric (Toyobo VOLANS 7121P) (comparative example 6) is used as padded coaming.Also prepare with phase isomorphism
Make but without using flat bellows (comparative example 7) of the adhesive-bonded fabric as padded coaming.The details of the flat bellows of comparative example 5,6 and 7
As shown in Table 1.
(comparative example 8)
Prepare the flat bellows with construction in the same manner as in Example 1, difference be not using resin web and
Ditch shape passage is formed on the surface of film support material.On the flat bellows with ditch shape passage, example is in Japan Patent Shen
A passage as disclosed in (JP-A) number 281,264/96 (referring to Fig. 2) please be disclose.The details of the flat bellows of comparative example 8 is such as
Shown in table 1.
It will such as be will become apparent from by the result of table 1, the flat film with outstanding permeability obtained in embodiment 1 to 6
Box.On the contrary, in embodiment 7 so that peripheral edge margin and arrange thereon between resin web and the middle section of adhesive-bonded fabric
Difference in height is more than 0.5mm, so that strain is caused on the surface of seperation film, and the amount reduction of the infiltration water through film.In addition,
Because the difference in height between peripheral edge margin and middle section is big, cause to damage on the surface of seperation film.
In comparative example 1 so that the porosity of resin web is low, and as a result, point of suction pressure in the channel
The uneven of cloth becomes big.Moreover, because channel space is narrow, the amount through the infiltration water of film is reduced.In comparative example 2,
So that porosity is high, and as a result, the imbalance of the distribution of suction pressure in the channel is big, and through the infiltration water of film
Amount reduction.In comparative example 3, resin web used has a small opening, and as a result, channel narrows, so that pressure is damaged
Mistake is uprised, and the amount reduction of the infiltration water through film.In comparative example 4, because the opening of resin web is big, seperation film is glued
To resin web, and the amount reduction of the infiltration water through film.In comparative example 5, adhesive-bonded fabric used has small fabric list
Position weight and small thickness, and as a result, seperation film is adhered in resin web, so that the amount through the infiltration water of film is reduced.
In comparative example 6, adhesive-bonded fabric used has big basis weights and big thickness, and as a result, pressure is damaged
Lose the amount reduction for becoming infiltration water big and through film.In comparative example 7, because without using adhesive-bonded fabric, seperation film adheres to resin
Online and channel narrows, so that the amount through the infiltration water of film is reduced.In comparative example 8, it is that wherein channel shape is ditch
Shape and the narrow box of channel space, so that the amount through the infiltration water of film is reduced.
Industrial applicibility
In the flat bellows of the present invention, the reduction of the pressure loss had not only been reached but also the suction pressure distribution on separation membrane surface
Reduction so that the box be applied to low cost and high efficiency handle waste water.
Description of reference numerals
1：Seperation film
2：Channel material
3：Film support plate
4：Peripheral edge margin
5：Middle section
6：Padded coaming
7：Permeate the outlet of water
11：Immersion-type bellows
12：Filter plate
13：Water collecting region
14：Attract nozzle
15：Slit
Claims (5)
1. a kind of flat bellows for being used to handle waste water, the flat bellows includes film support plate and two seperation films that resin is made,
Each in described two seperation films is attached in each in both front and backs of the film support plate, its
In, the film support plate is both provided with drop on both its front and backs, thus makes the peripheral edge margin of the film support plate
Middle section than the film support plate is high, and each in wherein described seperation film is each along the institute of the film support plate
State peripheral edge margin attachment to cover the middle section of the film support plate, it is characterised in that in the film support plate
Entreat between region and each described seperation film, from the film support plate side, be sequentially arranged channel material and padded coaming, use
Make the resin web of the channel material and have be in machine and transverse direction 0.5 to 3.2mm opening, equal in machine and transverse direction
For 0.4 to 1.0mm linear diameter, 0.6 to 2.0mm thickness and 20 to 60% porosity, and the padded coaming has
10 to 110g/m2Basis weights and 0.1 to 0.5mm thickness.
2. the flat bellows according to claim 1 for being used to handle waste water, wherein infiltration water is from the outside of the seperation film,
By the outlet that is used for the infiltration water of the padded coaming, the channel material and the end for being arranged in the film support plate
Sequential flowing.
3. the flat bellows according to claim 1 or 2 for being used to handle waste water, wherein the channel material is the tree of plain weave type
Fat net, and the padded coaming is adhesive-bonded fabric.
4. the flat bellows according to any one of claim 1 to 2 for being used to handle waste water, wherein the institute of the film support plate
Degree of the peripheral edge margin than the middle section high 0.6 to 2mm of the film support plate is stated, and in the peripheral edge margin and its
On to arrange difference in height between the channel material and the middle section of the padded coaming be below 0.5mm.
5. the flat bellows according to claim 3 for being used to handle waste water, wherein the peripheral edge margin of the film support plate
Than the degree of the middle section high 0.6 to 2mm of the film support plate, and arrange in the peripheral edge margin and thereon institute
It is below 0.5mm to state the difference in height between channel material and the middle section of the padded coaming.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-224827 | 2013-10-30 | ||
| JP2013224827A JP5742041B2 (en) | 2013-10-30 | 2013-10-30 | Flat membrane cartridge for wastewater treatment |
| PCT/JP2014/078332 WO2015064495A1 (en) | 2013-10-30 | 2014-10-24 | Flat membrane cartridge for waste water processing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105682779A CN105682779A (en) | 2016-06-15 |
| CN105682779B true CN105682779B (en) | 2017-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480059122.6A Active CN105682779B (en) | 2013-10-30 | 2014-10-24 | Flat bellows for handling waste water |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5742041B2 (en) |
| CN (1) | CN105682779B (en) |
| MY (1) | MY191215A (en) |
| WO (1) | WO2015064495A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112429810A (en) * | 2020-11-04 | 2021-03-02 | 王霞伟 | Large-scale industrial water treatment reverse osmosis equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1676202A (en) * | 2004-03-30 | 2005-10-05 | 日立工程设备建设株式会社 | Flat-membrane element and support plate |
| CN1890016A (en) * | 2003-12-03 | 2007-01-03 | 3M创新有限公司 | Membrane modules and integrated membrane cassettes |
| CN101541406A (en) * | 2007-07-03 | 2009-09-23 | 住友电工超效能高分子股份有限公司 | Flat-membrane element for filtration and flat-membrane filtration module |
| CN202876664U (en) * | 2012-10-12 | 2013-04-17 | 上海乐泽环境工程有限公司 | Plate-type membrane assembly for membrane bioreactor (MBR) process |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09299969A (en) * | 1996-05-20 | 1997-11-25 | Kubota Corp | Plate type membrane separation body for water treatment |
| JPH11244672A (en) * | 1998-03-02 | 1999-09-14 | Daisen Membrane Systems Kk | Flat membrane element and flat membrane module using the same |
| JP2000312815A (en) * | 1999-04-30 | 2000-11-14 | Nitto Denko Corp | Immersible membrane separation device |
| JP2001321766A (en) * | 2000-05-15 | 2001-11-20 | Toray Ind Inc | Method of manufacturing filtration membrane element and permeate |
| CN1236842C (en) * | 2001-02-16 | 2006-01-18 | 东丽株式会社 | Separating film, separating film element, separating film module sewage and waste water treatment device, and separating film manufacturing method |
| US6506300B2 (en) * | 2001-05-15 | 2003-01-14 | Sartorius Ag | Distributor plate for crossflow cassette-type filtration appliances |
| JP2003135939A (en) * | 2001-10-31 | 2003-05-13 | Toray Ind Inc | Separation membrane and manufacturing method therefor |
| JP2003144869A (en) * | 2001-11-13 | 2003-05-20 | Toray Ind Inc | Separation membrane and manufacturing method therefor |
| JP2003181227A (en) * | 2001-12-20 | 2003-07-02 | Asahi Kasei Corp | Filter cartridge |
-
2013
- 2013-10-30 JP JP2013224827A patent/JP5742041B2/en active Active
-
2014
- 2014-10-24 CN CN201480059122.6A patent/CN105682779B/en active Active
- 2014-10-24 MY MYPI2016700703A patent/MY191215A/en unknown
- 2014-10-24 WO PCT/JP2014/078332 patent/WO2015064495A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1890016A (en) * | 2003-12-03 | 2007-01-03 | 3M创新有限公司 | Membrane modules and integrated membrane cassettes |
| CN1676202A (en) * | 2004-03-30 | 2005-10-05 | 日立工程设备建设株式会社 | Flat-membrane element and support plate |
| CN101541406A (en) * | 2007-07-03 | 2009-09-23 | 住友电工超效能高分子股份有限公司 | Flat-membrane element for filtration and flat-membrane filtration module |
| CN202876664U (en) * | 2012-10-12 | 2013-04-17 | 上海乐泽环境工程有限公司 | Plate-type membrane assembly for membrane bioreactor (MBR) process |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2015085253A (en) | 2015-05-07 |
| WO2015064495A1 (en) | 2015-05-07 |
| CN105682779A (en) | 2016-06-15 |
| MY191215A (en) | 2022-06-08 |
| JP5742041B2 (en) | 2015-07-01 |
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