CN103118769A - Immersion type membrane filtration unit and immersion type membrane filtration apparatus - Google Patents
Immersion type membrane filtration unit and immersion type membrane filtration apparatus Download PDFInfo
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- CN103118769A CN103118769A CN2011800280030A CN201180028003A CN103118769A CN 103118769 A CN103118769 A CN 103118769A CN 2011800280030 A CN2011800280030 A CN 2011800280030A CN 201180028003 A CN201180028003 A CN 201180028003A CN 103118769 A CN103118769 A CN 103118769A
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- 238000007654 immersion Methods 0.000 title claims abstract description 12
- 238000005374 membrane filtration Methods 0.000 title abstract description 4
- 239000012528 membrane Substances 0.000 claims abstract description 154
- 238000005273 aeration Methods 0.000 claims abstract description 27
- 239000000835 fiber Substances 0.000 claims description 49
- 238000004140 cleaning Methods 0.000 abstract description 19
- 238000001914 filtration Methods 0.000 abstract description 10
- 239000012510 hollow fiber Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 3
- 238000005201 scrubbing Methods 0.000 abstract 1
- 238000005406 washing Methods 0.000 description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 239000010865 sewage Substances 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 239000010813 municipal solid waste Substances 0.000 description 5
- 238000011282 treatment Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
- 239000003651 drinking water Substances 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 1
- 240000004808 Saccharomyces cerevisiae Species 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000012489 doughnuts Nutrition 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- -1 usually Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
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Classifications
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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
- B01D63/02—Hollow fibre modules
- B01D63/026—Wafer type modules or flat-surface type modules
-
- 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
- B01D65/08—Prevention of membrane fouling or of concentration polarisation
-
- 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
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2313/00—Details relating to membrane modules or apparatus
- B01D2313/54—Modularity of membrane module elements
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/18—Use of gases
- B01D2321/185—Aeration
-
- 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
-
- 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)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Disclosed is an immersion type membrane filtration unit comprising a filtration membrane module in which a bundle of multiple hollow fiber membranes is fixed in a planar manner between upper fixing members and lower fixing members, wherein the filtration membrane module (10) of the immersion type membrane unit is placed as explained below to reduce power for aeration without hampering the effect of cleaning by air scrubbing. In the filtration membrane module (10), the upper fixing members (21) and the lower fixing members (22) fixing the hollow fiber membranes (11) are separated by a distance (D) of 1150 mm, the maximum length (L) of the hollow fiber membranes (11) is 1185 mm, the thickness (d) of a plurality of the lower fixing members (22) fixing the hollow fiber membranes (11) is 30 mm, and the bundle of hollow fiber membranes (11) is fixed, having a width (a) of approximately 20 mm, in the center in the thickness direction of the lower fixing members (22). Both lateral portions where the hollow fiber membranes (11) do not exist in the thickness direction of the lower fixing members (22) have a width (b) of 5 mm, and furthermore the lower fixing members (22) that are adjacent to each other are separated by a distance (c) of 3 mm to 7 mm.
Description
Technical field
The present invention relates to immersion-type membrane filter unit and immersion type membrane filter, more specifically, relate to and utilize bubble to keep the cleaning efficiency of washing and seek miniaturization and the immersion-type membrane filter unit of energy-saving and the immersion type membrane filter that uses this unit.
Background technology
In recent years, in water treatment field such as the manufacturing of drinking water, clean water treatment, draining processing, use more and more the filter that effectively adopts the immersion-type membrane filter unit of hollow-fibre membrane to consist of to the removal of the filtration of floating material in water or impurity.In field of food industry, with for the separation removal of the yeast that ferments or the simmer down to purpose of liquid, used the device that adopts hollow-fibre membrane again.Due to these devices that use to adopt hollow-fibre membrane, can carry out Water reclamation, filtration, the work such as concentrated with less energy, therefore for recently with the energy-conservation consideration that prevents global warming, get more and more people's extensive concerning.
Such immersion-type membrane filter unit as shown in Figure 1, has boundling many hollow-fibre membranes 11 with the plane filter membrane module 10 that is fixed between upside fixed component 21 and downside fixed component 22, re-uses a plurality of these filter membrane modules 10 and consists of filter element 1.
Fig. 3 (a) means the schematic diagram of the filter element 1 that possesses filter membrane module 10, around the inboard of shell 14 accommodate several filter membrane modules 10 shown in Fig. 3 (b).Each filter membrane module 10 is with certain being spaced.Around shell 14 bottoms, be provided for to the aeration tube 16 of the bubble that provides aeration to use between filter membrane module 10.Be used to the bubble from aeration tube 16, around the interior generation of shell 14 from below the current that flow out upward, simultaneously hollow-fibre membrane 11 is carried out the cleaning of air washing.Such filter element 1 is single or multiple be impregnated in the tank that stockpiles the sewage such as sludge water side by side.The water that contains in sewage forms with this processing water that purified by the tube wall of many hollow-fibre membranes 11 of filter membrane module 10.Processing water after purification is put together for purposes such as recyclings.
In such filter element 1, owing to continuing operation, pile up gradually solid matter on the surface of hollow-fibre membrane 11.In order to remove such deposit, carry out as mentioned above the cleaning of air washing.Account for larger ratio in the overall consumed power of the aeration power Zai Stains type film filter when carrying out the cleaning of this air washing, thereby can think, if improve the cleaning efficiency of air washing, can seek to reduce aeration power, the consumed power of immersion type membrane filter reduced to have very large contribution.
In order to improve the cleaning efficiency of air washing, work out in the fixing adhesive portion up and down of hollow-fibre membrane through hole (patent documentation 1) is set, reduce the technology of the packing density (patent documentation 2) of hollow fiber membrane bundle when film cleans, but actual conditions are the aeration power can not fully reduce to clean the time.
In the situation that use the filter element 1 of the filter membrane module 10 of a plurality of plane arrangement hollow-fibre membranes shown in Figure 1, the aeration power in order to reduce to clean is considered to set the interval of 10 of adjacent filter membrane modules less.The interval that the filter membrane module is 10 hour, the area (horizontal profile is long-pending) that arranges of filter element 1 diminishes, the density that the per unit of hollow-fibre membrane 11 arranges area becomes large, therefore namely use identical aeration air quantity, also can improve aeration efficient, the aeration power when result can reduce the cleaning of air washing.
But, when setting the interval of 10 of filter membrane modules minimum, can not be in 10 risings of filter membrane module from the bubble that aeration tube 16 is supplied with, and around shell 14 and filter membrane module 10 between rise, even bubble by around the outside of shell 14, the cleaning performance of air washing reduces greatly.Again, the field trash that exists in sewage be wrapped in up and down fixed component 21 and 22 or hollow-fibre membrane 11 on, hinder the cleaning of washing, sometimes can cause the trouble such as not wash clean.In order to remove such field trash, usually, sewage in advance by 1mm between left and right every bar screen, then offer filter.But, even bar screen removal of inclusions fully is set, therefore, due to the interval of 10 of filter membrane modules, can cause field trash be wrapped in fixed component 21 and 22 or hollow-fibre membrane 11 on, hinder the cleaning of washing.Consider such situation, the interval of 10 of filter membrane modules is set as the large value that surpasses needs of 12mm left and right, so actual conditions are that the cleaning of air washing needs a large amount of air, can not increase the effect that reduces of aeration power.
The prior art document:
Patent documentation 1: No. 2007/040035, international open WO;
Patent documentation 2: Japanese kokai publication hei 9-262443.
Summary of the invention
The problem that invention will solve:
Thereby, the object of the invention is to, the bundle that will contain many hollow-fibre membranes with the plane a plurality of filter membrane modules that are fixed between upside fixed component and downside fixed component in, under the prerequisite of the cleaning performance that does not hinder air washing, set the interval between filter membrane module 10 less, to seek the filter membrane unit small-sized, reduce aeration power in membrane filtration and energy-conservation.
The means of dealing with problems:
Immersion-type membrane filter unit of the present invention, be have the bundle that will contain many hollow-fibre membranes with planely be fixed in a plurality of filter membrane modules between upside fixed component and downside fixed component, surround these a plurality of filter membrane modules around shell and the immersion-type membrane filter unit of supplying with the aeration tube of bubble from this a plurality of filter membrane modules belows, wherein, the interval between adjacent filter membrane module is in the scope of 3~7mm.
Here, hollow-fibre membrane overrelaxation, hollow-fibre membrane shakes greatlyr, therefore can think that the cleaning performance of overrelaxation air washing is better.But, if hollow-fibre membrane is excessively lax, as shown in arrow 24 by the current of Bubble formation as shown in Figure 2, escape to the side of filter membrane module 10, in the zone shown in the symbol 25 of Fig. 2, current die down.Consequently, the cleaning performance of air washing reduces, and the dirts such as mud can not be cleaned, and are remaining with attachment state.It is large that this dirt further becomes, and finally can counteract to filtration.
Thereby, the lax appropriateness that is preferably of hollow-fibre membrane.Again, the distance that is preferably between upside fixed component and downside fixed component is larger, and relaxing of hollow-fibre membrane is less.Particularly, when the length that the distance between described upside fixed component and described downside fixed component is designated as between D, described upside fixed component and described downside fixed component fixing hollow-fibre membrane is designated as L, in the situation that 500mm≤D≤1000mm is preferably D/L 〉=0.96; In the situation that 1000mm<D≤1500mm is preferably D/L 〉=0.97; In the situation that 1500mm<D≤2000mm is preferably D/L 〉=0.98; In the situation that 2000mm<D≤3000mm is preferably D/L 〉=0.99.
Again, in described in the above, between adjacent filter membrane module, be designated as b in the situation that the distance between adjacent filter membrane module is designated as each end face on thickness direction of c, described upside fixed component and described downside fixed component to the distance of the fixed position of hollow-fibre membrane, be preferably 2b+c=13~17mm.The value representation hollow-fibre membrane of this 2b+c does not produce the distance between the hollow-fibre membrane of the adjacent immersion-type membrane filter unit in lax situation.
In addition, immersion type membrane filter of the present invention wherein, possesses a plurality of above-mentioned any immersion-type membrane filter units.
The effect of invention:
In immersion-type membrane filter unit of the present invention, closest-approach distance between the fixed position of the hollow-fibre membrane of adjacent filter membrane module is set in 3~7mm scope, therefore the bubble of supplying with from aeration tube between a plurality of filter membrane modules from below rise upward, do not hinder the cleaning performance of air washing.And, field trash can not occur be wrapped in situation on hollow-fibre membrane.In addition, owing to can make sectional area less than existing immersion-type membrane filter unit, the reducing of the aeration power in the time of therefore can seeking the cleaning of air washing.
Description of drawings
Fig. 1 is the schematic isometric that the filter membrane module of using in the present invention and existing immersion-type membrane filter unit is shown;
Fig. 2 is illustrated in the filter membrane module of hollow-fibre membrane with plane arrangement, the stereogram of the situation of the current direction side escape of washing cleaning hollow-fibre membrane;
Fig. 3 (a) is the schematic isometric that the filter element 1 that possesses filter membrane module 10 is shown, be (b) illustrate (a) the removal outside around the schematic isometric of inside of shell 14;
Fig. 4 is the immersion-type membrane filter unit of one example according to the present invention, and the P-P alignment in Fig. 3 looks cutaway view;
Fig. 5 is the cutaway view that is illustrated in the fixed position of hollow-fibre membrane on the downside fixed component of immersion-type membrane filter unit of Fig. 4;
Fig. 6 illustrates to use Fig. 4 and the actual figure that carries out the result of the test of sewage disposal of immersion-type membrane filter unit shown in Figure 5.
The specific embodiment
With reference to the accompanying drawings example of the present invention is described, but the invention is not restricted to following record.The immersion-type membrane filter unit 1 of one example according to the present invention has the general structure identical with above-mentioned Fig. 3, possess a plurality of Fig. 1 stereogram signal property the filter membrane module 10 that illustrates.In filter membrane module 10, as mentioned above, the bundle that contains many hollow-fibre membranes is fixed between upside fixed component 21 and downside fixed component 22, and upside fixed component 21 and downside fixed component 22 are fixed by two pillars 26 with keeping certain distance.Hollow-fibre membrane 11 is that sewage is filtered when inside is led in the outside of hollow-fibre membrane 11 with the hollow filament of filter membrane as tube wall.
Fig. 4 is that the P-P alignment of immersion-type membrane filter unit 1 shown in Figure 3 is looked cutaway view.Draw 3 filter membrane modules 10 in Fig. 4, but actual immersion-type membrane filter unit 1 have about 50 filter membrane modules 10.In this example, as filter membrane module 10, the film unit SADF1590R that uses Mitsubishi Rayon Co., Ltd. (the レ イ ヨ Application エ Application ジ ニ ア リ Application グ of Mitsubishi (strain)) to make.This filter membrane module 10, as shown in Figure 1 and Figure 4, distance B=1150mm between upside fixed component 21 and downside fixed component 22, between upside fixed component 21 and downside fixed component 22, approximately 2.8mm, length L=1185mm(are the longest to launch external diameter) hollow-fibre membrane 11.Thereby, the ratio D/L=0.97 of distance B and length L.
As mentioned above, in this example, there is the relation of the distance B between the length L of hollow-fibre membrane>up and down fixed component, therefore hollow-fibre membrane 11 is fixed as to produce between upside fixed component 21 and downside fixed component 22 and relaxes, by means of this, can utilize aeration to carry out just right washing and clean.Like this, hollow-fibre membrane 11 just can not be subjected to proceed to filter with stopping up.
Fig. 5 represents the configuration of downside fixed component 22 of the bottom of immersion-type membrane filter unit 1.In the immersion-type membrane filter unit 1 of this example, 3 downside fixed components 22, thickness d=30mm separately, upside fixed component 21 also has identical thickness.Again, in downside fixed component 22, hollow-fibre membrane 11 bundle with width a=approximately 20mm be fixed in its thickness direction central authorities, there is not hollow-fibre membrane 11 in the part at the width b=5mm of the thickness direction both sides of downside fixed component 22.In addition, set distance c=5mm between adjacent downside fixed component 22.In such configuration, suppose hollow-fibre membrane do not produce the doughnut of the adjacent immersion-type membrane filter unit in lax situation intermembranous be 15mm apart from 2b+c.
Use has the immersion-type membrane filter unit 1 of Fig. 5 of such configuration, and the actual sewage water filtration that carries out is tested, and the results are shown in Fig. 6.Transverse axis is the number of days from on-test, at first, existing immersion-type membrane filter unit to the distance c=12mm of 10 of adjacent modules carries out the test (left side of Fig. 6) of 31 days, then the immersion-type membrane filter unit of the present invention of the distance c=5mm of 10 of adjacent modules is carried out the test (right side of Fig. 6) of 31 days.In this test, be set as the approximately certain value of 0.6m/d with filtering a fluid stream, adjust simultaneously the aeration air quantity, make the superficial linear velocity in a column in filter element identical, the ratio of the aeration air quantity of the immersion-type membrane filter unit of the present invention under measuring take the aeration air quantity of existing immersion-type membrane filter unit as 1 situation.Filter differential pressure and be the measured value of index of the dirt (obstruction) of the hollow-fibre membrane 11 that causes as filtration, the dirt of hollow-fibre membrane 11 is more, filters differential pressure larger.
According to these result of the tests, as shown in Figure 6, with respect to the aeration air quantity of existing immersion type membrane filter, the ratio of the aeration air quantity of immersion-type membrane filter unit of the present invention is about 0.84, and the aeration power of device of the present invention is reduced as can be known.Again, about filtering the behavior of differential pressure, do not cause the reduction of the cleaning performance of air washing because of the reduction of aeration air quantity, obtain the result identical with existing device.In addition, at this duration of test, do not observe field trash in any in immersion type membrane filter existing and of the present invention yet and be wrapped in upside fixed component 21, downside fixed component 22 and the first-class situation of hollow-fibre membrane 11.
In this example, the immersion-type membrane filter unit 1 that uses 3 filter membrane modules 10 is illustrated, but in actual device, it is self-evident using more filter membrane module 10.Again, the size of filter membrane module 10, in other words, the number of hollow-fibre membrane 11 and length also can change according to application target.
Industrial applicability:
Immersion-type membrane filter unit of the present invention can be applied to the water treatments such as drinking water manufacturing, clean water treatment, draining processing, particularly utilizes MBR(Membrane Bio Reactor; The field of the water treatment film separated activated sludge method) and field of food industry.
Symbol description:
1 immersion-type membrane filter unit;
10 filter membrane modules;
11 hollow-fibre membranes;
14 around shell;
16 aeration tubes;
21 upside fixed components;
22 downside fixed components;
26 pillars.
Claims (7)
1. immersion-type membrane filter unit, be have the bundle that will contain many hollow-fibre membranes with planely be fixed in a plurality of filter membrane modules between upside fixed component and downside fixed component, surround these a plurality of filter membrane modules around shell and the immersion-type membrane filter unit of supplying with the aeration tube of bubble from this a plurality of filter membrane modules belows, it is characterized in that
Interval between adjacent filter membrane module is in the scope of 3~7mm.
2. immersion-type membrane filter unit according to claim 1, is characterized in that,
In the situation that being designated as the length of hollow-fibre membrane fixing between D, described upside fixed component and described downside fixed component, the distance between described upside fixed component and described downside fixed component is designated as L, 500mm≤D≤1000mm, D/L 〉=0.96.
3. immersion-type membrane filter unit according to claim 1, is characterized in that,
In the situation that being designated as the length of hollow-fibre membrane fixing between D, described upside fixed component and described downside fixed component, the distance between described upside fixed component and described downside fixed component is designated as L, 1000mm<D≤1500mm, D/L 〉=0.97.
4. immersion-type membrane filter unit according to claim 1, is characterized in that,
In the situation that being designated as the length of hollow-fibre membrane fixing between D, described upside fixed component and described downside fixed component, the distance between described upside fixed component and described downside fixed component is designated as L, 1500mm<D≤2000mm, D/L 〉=0.98.
5. immersion-type membrane filter unit according to claim 1, is characterized in that,
In the situation that being designated as the length of hollow-fibre membrane fixing between D, described upside fixed component and described downside fixed component, the distance between described upside fixed component and described downside fixed component is designated as L, 2000mm<D≤3000mm, D/L 〉=0.99.
6. the described immersion-type membrane filter unit of any one according to claim 1~5, is characterized in that,
Between adjacent filter membrane module, distance between adjacent filter membrane module is designated as c, described upside fixed component and described downside fixed component respectively are designated as in the situation of b since the distance of the end face on thickness direction to the fixed position of hollow-fibre membrane, 2b+c=13~17mm.
7. an immersion type membrane filter, is characterized in that, possesses the described immersion-type membrane filter unit of any one according to claim 1 a plurality of~6.
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JP2010158440 | 2010-07-13 | ||
JP2010-158440 | 2010-07-13 | ||
PCT/JP2011/003819 WO2012008115A1 (en) | 2010-07-13 | 2011-07-04 | Immersion type membrane filtration unit and immersion type membrane filtration apparatus |
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CN103118769A true CN103118769A (en) | 2013-05-22 |
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CN2011800280030A Pending CN103118769A (en) | 2010-07-13 | 2011-07-04 | Immersion type membrane filtration unit and immersion type membrane filtration apparatus |
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CN (1) | CN103118769A (en) |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN108349757A (en) * | 2015-11-10 | 2018-07-31 | 三菱化学株式会社 | Membrane filter unit and method for treating water |
CN112957827A (en) * | 2021-01-27 | 2021-06-15 | 浙江东大环境工程有限公司 | Polytetrafluoroethylene hollow fiber membrane air filter |
Families Citing this family (5)
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CN105536544B (en) * | 2012-04-02 | 2018-04-06 | 三菱化学株式会社 | Hollow fiber film assembly |
JP2015157231A (en) * | 2012-06-15 | 2015-09-03 | 旭化成ケミカルズ株式会社 | Cassette type membrane unit |
JP2018099633A (en) * | 2015-04-24 | 2018-06-28 | 住友電気工業株式会社 | Filtration device |
JPWO2016181803A1 (en) * | 2015-05-11 | 2018-02-22 | 住友電気工業株式会社 | Filtration device |
JP6627872B2 (en) * | 2015-06-08 | 2020-01-08 | 住友電気工業株式会社 | Filtration device |
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2011
- 2011-07-04 JP JP2012524417A patent/JPWO2012008115A1/en active Pending
- 2011-07-04 CN CN2011800280030A patent/CN103118769A/en active Pending
- 2011-07-04 WO PCT/JP2011/003819 patent/WO2012008115A1/en active Application Filing
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CN108349757A (en) * | 2015-11-10 | 2018-07-31 | 三菱化学株式会社 | Membrane filter unit and method for treating water |
CN112957827A (en) * | 2021-01-27 | 2021-06-15 | 浙江东大环境工程有限公司 | Polytetrafluoroethylene hollow fiber membrane air filter |
CN112957827B (en) * | 2021-01-27 | 2023-04-18 | 浙江东大环境工程有限公司 | Polytetrafluoroethylene hollow fiber membrane air filter |
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WO2012008115A1 (en) | 2012-01-19 |
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