CN1642625A - Spiral membrane element, reverse osmosis membrane module, and reverse osmosis membrane device - Google Patents
Spiral membrane element, reverse osmosis membrane module, and reverse osmosis membrane device Download PDFInfo
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- CN1642625A CN1642625A CN03806827.3A CN03806827A CN1642625A CN 1642625 A CN1642625 A CN 1642625A CN 03806827 A CN03806827 A CN 03806827A CN 1642625 A CN1642625 A CN 1642625A
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- reverse osmosis
- osmosis membrane
- wire rod
- water
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- 239000012528 membrane Substances 0.000 title claims abstract description 117
- 238000001223 reverse osmosis Methods 0.000 title claims description 105
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 230
- 239000000463 material Substances 0.000 claims abstract description 50
- 230000002093 peripheral effect Effects 0.000 claims abstract description 7
- 239000012466 permeate Substances 0.000 claims description 40
- 239000010409 thin film Substances 0.000 claims description 37
- 241000272517 Anseriformes Species 0.000 claims description 23
- 230000004888 barrier function Effects 0.000 claims description 16
- 238000009792 diffusion process Methods 0.000 claims description 16
- 125000006850 spacer group Chemical group 0.000 abstract 2
- 238000000034 method Methods 0.000 description 17
- 239000010408 film Substances 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 14
- 238000002203 pretreatment Methods 0.000 description 8
- 238000012545 processing Methods 0.000 description 7
- 238000010612 desalination reaction Methods 0.000 description 6
- 238000011156 evaluation Methods 0.000 description 5
- 230000000630 rising effect Effects 0.000 description 5
- 230000009183 running Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000007774 longterm Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000001728 nano-filtration Methods 0.000 description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 3
- 239000002270 dispersing agent Substances 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000013535 sea water Substances 0.000 description 3
- 229910021642 ultra pure water Inorganic materials 0.000 description 3
- 239000012498 ultrapure water Substances 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000012800 visualization Methods 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000004087 circulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000011033 desalting Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- BGOFCVIGEYGEOF-UJPOAAIJSA-N helicin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OC1=CC=CC=C1C=O BGOFCVIGEYGEOF-UJPOAAIJSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
Images
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
- B01D63/10—Spiral-wound membrane modules
- B01D63/12—Spiral-wound membrane modules comprising multiple spiral-wound assemblies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/025—Reverse osmosis; Hyperfiltration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/08—Apparatus therefor
-
- 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
- B01D63/10—Spiral-wound membrane modules
-
- 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
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by 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
- B01D2313/143—Specific spacers on the feed side
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/02—Non-contaminated water, e.g. for industrial water supply
- C02F2103/04—Non-contaminated water, e.g. for industrial water supply for obtaining ultra-pure water
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Nanotechnology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
A spiral membrane element, comprising a bag-like separating membrane wound, together with a raw water spacer, on the outer peripheral surface of a permeated water collecting tube, the raw water spacer further comprising first wire materials and second wire materials extending from the inflow side to the outflow side of raw water in a gently meandering curved shape, wherein the first wire materials extend along one membrane face of the separating membrane and form one raw water passages between the adjacent first wire materials, and the second wire materials extend along the other membrane face of the separating membrane and form the other raw water passages between the adjacent second wire materials, and the first and second wire materials are partly overlapped with each other and joined to each other at the overlapped positions.
Description
Technical field
Even the present invention relates to the high former water of turbidity such as a kind of water for industrial use, do not carry out pre-treatment, also can carry out screw type thin-film component, reverse osmosis membrane assembly and the reverse osmosis membrane apparatus that water flowing is handled long-term and stably.
Background technology
In the prior art, method as water in the desalination that obtains seawater, ultra-pure water, the various manufacture process, as the screw type thin-film component that sees through film, the method for isolating ions composition and low molecular composition is known from former water with reverse osmosis membrane (RO film) and nano-filtration membrane (NF film) in employing.Shown in the example of Fig. 9, the general screw type thin-film component that uses in the prior art, constitute by following manner, promptly, by on two faces that reverse osmosis membrane 91 overlapped permeate water separator 92 and three limits are bonded together, thereby shape pouch film 93 is installed in permeate water collector pipe 94 peristome of this bag shape film 93, with netted former water separator 95, shape is wound on the outer peripheral face of permeate water collector pipe 94 in the shape of a spiral.Thereby former water 96 flows along former water separator 95 from the end face side 9a of a side of screw type thin-film component 90 supply, is discharged from as condensed water 98 from the end face 9b of the opposite side of screw type thin-film component 90.Former water 96 is in former water separator 95 process of flowing, sees through reverse osmosis membrane 91 and becomes permeate water 97, and this permeate water 97 flow into the inside of permeate water collector pipe 94 along permeate water separator 92, discharges from the end of permeate water collector pipe 94.Like this, utilize the former water separator 95 between the bag shape film 93 that is configured in coiling, form former water route.
Utilizing this screw type thin-film component to obtain usually, to carry out pre-treatment under the situation of water in the desalination of seawater or ultra-pure water, the various manufacture process in order to remove turbid material in the former water.The reason of carrying out this pre-treatment is, in order when guaranteeing former current road, to strengthen the contact area of former water and reverse osmosis membrane as much as possible, the thickness of the former water separator of screw type thin-film component is usually below 1mm, thinner, turbid material is likely to accumulate on the former water separator that is arranged in former current road, stops up former current road.Therefore, remove the turbid material in the former water in advance, accumulate the rising of the water flowing pressure reduction that causes and see through the water yield, see through the reduction of water quality because of turbid material avoiding, can turn round long-term and stably.Be used for this pretreating device of removing turbid material, for example, comprise that coagulation sedimentation handles, various devices such as filtration treatment and film processing, these devices exist and make when cost and operating cost being set rising, and also need the big problem such as area that is provided with.Therefore, if can develop to have to utilize former water separator thin in the prior art example to guarantee former current road, and keep with prior art in equal salt rejection rate the time, do not accumulate the screw type thin-film component of the structure of turbid material, then without pre-treatment, just can supply water for industrial use and water channel water, can simplify system, reduce that area being set, reduce cost, high in industrial value.
On the other hand, the obturation on the former current road that causes for the turbid material that prevents by the screw type thin-film component has proposed to improve the scheme of structure of former water separator of mesh of the grid of prior art.Open in the clear 64-47404 communique the spy, disclose a kind of screw type thin-film component of making the former water separator of the shape that swans as corrugated sheet, with waveform that adopted.The former water separator of this waveform shape that swans, difficult forming, simultaneously, when being wound into helical form, the possibility that stream is destroyed is very big, is unpractical.
Open in the flat 9-299770 communique the spy, disclose a kind of following structure: first wire rod and second wire rod form lattice-shaped mutually across, dispose former water separator with first wire rod or second wire rod mode parallel with the length direction of permeate water collector pipe.Former water separator according to this structure, owing to go up along the direction parallel linearly mobile for former water base with the length direction of permeate water collector pipe, so the pressure loss is low, and the linear velocity of former water increases, turbid material in the former water is difficult to accumulate, but in contrast, owing to be present in the stream that shelters from former water with the wire rod of the rectangular direction of length direction of collector pipe, so, turbid material can be accumulated on this wire rod, still can cause the obturation on former current road.
Open in the flat 10-156152 communique the spy, as shown in Figure 8, a kind of former water separator is disclosed, constitute to the wire rod that outflow side Y zig zag extends by inflow side X from former water, wire rod is by first wire rod 81 of the face extension of the diffusion barrier 80 of the side in relative diffusion barrier, second wire rod 82 that extends with face along the diffusion barrier of opposite side constitutes, at the first adjacent wire rod each other, and the middle each other former current road of extending continuously that forms respectively of the second adjacent wire rod along the face of diffusion barrier from the Yuan Shui inflow side to the outflow side, described first wire rod and second wire rod, their a part of 81b, 82a overlaps, simultaneously, be joined together at the position of this coincidence.Former water separator according to this structure, although compare with the former water separator of mesh of the prior art, the obturation that can suppress the former current road that turbid material causes, but, near the delay of the former water the corner part C of first wire rod 81 in Fig. 8, even be subjected to for example influence of the current of the high flow rate at the protuberance B place of second wire rod 82, can not eliminate.Therefore, when long-time the use, still can cause accumulating of turbid material.
Like this, in the prior art in the former water separator of Ti Chuing, the structure of the mesh that is made of first wire rod and second wire rod in former current road, all exists the part that becomes corner part or inflection point, this will cause the delay of former water, when long-time the use, can cause accumulating of turbid material, can not avoid the rising of water flowing pressure differential, can not omit the former water pre-treatment of carrying out in the prior art, present present situation that Here it is.From both guaranteeing former current road, the viewpoint that forms the stream that does not have the inflection point is set out again, preferably only adopt from former water and flow into the structure that side direction outflow side wire rod linearly or linearity extension basically forms, but, owing to be not with wire rod structure connected to one another, so, be very difficult in industrial making.
Thereby, a kind ofly do not carry out pre-treatment and supply high former water, the turbid material of turbidity such as water for industrial use and also be difficult to accumulate, can carry out long-term and stably screw type thin-film component, reverse osmosis membrane assembly and the reverse osmosis membrane apparatus that water flowing is handled even the purpose of this invention is to provide.
Disclosure of an invention
In light of this situation, the result that the inventor etc. further investigate, discovery is on the outer peripheral face that diffusion barrier and former water separator with the bag shape are wound up into the permeate water collector pipe together and in the screw type thin-film component that constitutes, the part that turbid material in the former water is accumulated, mainly be the intersection point part and the bending part of the wire rod intersection of former water separator, thereby, if wire rod is intersected, do not form the inflection point, the mobile words that become straight line with former water, can suppress turbid material accumulating on former water separator etc. significantly, thereby finish the present invention.
Promptly, the present invention (1), a kind of screw type thin-film component is provided, be diffusion barrier and former water separator with the bag shape be wound up into the permeate water collector pipe together outer peripheral face on and constitute, this former water separator is made of first wire rod and second wire rod that extend by the shape that swans with mild curve to the outflow side from the inflow side of former water, when the face of this first wire rod relative side in this diffusion barrier extends, between the first adjacent wire rod, form the former current road of a side, when the face of this second wire rod relative opposite side in this diffusion barrier extends, between second wire rod of adjacency, form the former current road of opposite side, this first wire rod and this second wire rod part are overlapping, are bonded together at this overlapping position.By adopting this structure, former water gently swans to the outflow side from the inflow side along face each other at the wire rod of the shape that swans with mild curve, perhaps linearly basically flowing.Therefore, suppressed the accumulating of turbid material in the former current road significantly.
In addition, the present invention (2) provides a kind of screw type thin-film component, it is characterized in that the aforementioned shape that swans with mild curve is the shape with systematicness of no inflection point, the ratio (H/L) of amplitude H and wavelength L is 0.02～2, and per 1 meter of the single line material is 1～100 wavelength.By adopting this structure, can selection make with the appropriate appropriate value that purposes and service condition match, can obtain the effect of aforementioned invention reliably.In addition, the present invention (3) provides a kind of reverse osmosis membrane assembly, it is characterized in that, has said spiral type thin-film component.By adopting this structure, except that realizing the effect identical, can also be easy to move in the water processing establishment, and can keep its original state to be installed to unchangeably on the processing line with aforementioned invention.The present invention (4) provides a kind of reverse osmosis membrane apparatus, it is characterized in that, has aforementioned reverse osmosis membrane assembly.Utilize reverse osmosis membrane apparatus of the present invention, obtain the desalination of seawater, and ultra-pure water, various manufacture process under the situation of water, can not carry out pre-treatment and supply the high former water of turbidity such as water for industrial use and water channel water, can simplify system, reduce area is set, reduce cost, industrial value is high.
The simple declaration of accompanying drawing
Fig. 1 is the view of former water separator in the example of this form of implementation of expression, Fig. 2 A is the observed view of A-A line along Fig. 1, Fig. 2 B is the observed view of B-B line along Fig. 1, Fig. 3 is the perspective view of the part of presentation graphs 1 enlargedly, Fig. 4 A is the view that expression constitutes first wire rod of former water separator, Fig. 4 B is the view that expression constitutes second wire rod of former water separator, Fig. 5 is the view of former water separator in the example of another form of implementation of expression, Fig. 6 is the view of an example that is illustrated in the structure of the reverse osmosis membrane assembly in the example of this form of implementation, Fig. 7 is the view of an example that is illustrated in the reverse osmosis membrane apparatus of the invention process form, Fig. 8 is the view of the former water separator of zigzag of explanation prior art, and Fig. 9 is the schematic drawing of the reverse osmosis membrane assembly of prior art.
The best mode that carries out an invention
In the present invention, former water separator is made of a plurality of first wire rods and a plurality of second wire rod that extend by the shape that swans with mild curve to the outflow side from the inflow side of former water.Cross sectional shape as first wire rod and second wire rod does not have specific restriction, can list for example circle, triangle, quadrangle etc.In addition, first wire rod and second wire rod use the wire rod of same size, identical cross-sectional shape.
As the shape that swans with mild curve, can list does not for example have the inflection point, removes the shape that swans that all is made of curve part outside the flex point.So-called inflection point is meant by straight line and straight line corner part that constitute, that have angle.In addition, this corner part also comprises having the part that angle is eliminated or the circle of corner part is arranged slightly.Thereby, in the shape that swans with mild curve, do not comprise so-called shape in a zigzag shown in Figure 8.In addition, as curve part, always can list the semicircle that constitutes with identical radius of curvature, as the arc of the part of circle and the radius of curvature continually varying shape sin (sine) curve etc.In the semicircle that always constitutes with identical radius of curvature, perhaps under the situation of the arc of a Yuan part, the radius of curvature of this curve is 10mm～10000mm, is preferably 20mm～5000mm, when radius of curvature deficiency 10mm, the current of former water are easy to generate delay, when long-time the use, can cause accumulating of turbid material, when surpassing 10000mm, formability is poor, is difficult to make.In addition, the shape that swans with mild curve, for example, it can be the regular shape of form of taking to have the repetition of the wavelength of given size and amplitude, also can be wavelength or amplitude along the length direction of collector pipe or vertical with it direction change lentamente irregularly shaped, but, because the shape of systematicness is easy to making, so be preferred.
Below, the preferred form of the shape that swans with mild curve with reference to Fig. 1～Fig. 4 explanation.Fig. 1 is the view of former water separator in the example of this form of expression, Fig. 2 A is the observed view of A-A line along Fig. 1, Fig. 2 B is the observed view of B-B line along Fig. 1, Fig. 3 is the perspective view of the part of presentation graphs 1 enlargedly, Fig. 4 A is the view that expression constitutes first wire rod of former water separator, and Fig. 4 B is the view that expression constitutes second wire rod of former water separator.Among the figure, the shape of former water separator 1, be the systematicness with no inflection point, the shape that gently swans that the curve part radius of curvature changes continuously, wavelength L is 10～1000mm, is preferably 20～500mm, and amplitude H is 2～200mm, be preferably 10～100mm, and amplitude H is 0.02～2 with the ratio (H/L) of wavelength L, preferably more than 0.05, in the scope of less than 0.5.In this case, every 1m of single line material is 1～100 wavelength.If ratio (H/L), amplitude H and the wavelength L of amplitude H and wavelength are in above-mentioned number range, then former water gently swans in former current road, perhaps linearly basically mobile to the outflow side from the inflow side, when preventing that turbid material is accumulated in the former current road, the making of former water separator becomes possibility.
Former water separator 1 in the example of this form, constitute to a plurality of first wire rods 11 and a plurality of second wire rod 12 that outflow side Y extends with aforementioned shapes by inflow side X from former water, as shown in Figure 2, the face of the relative side of first wire rod 11 in the diffusion barrier 20 extends, between first wire rod 11,11 of adjacency, by the shape that swans with mild curve, form the former current road 23 of a side to outflow side Y from inflow side X, former water is the flow path on the face that is formed on film 21 in the former current road 23 of this side.The face 22 of second wire rod 12 relative opposite side in the diffusion barrier 20 extends, between second wire rod 12,12 of adjacency, by the shape that swans with mild curve, from inflow side X to outflow side Y, form the former current road 24 of opposite side, former water is the flow path on the face that is formed on film 22 in the former current road 24 of this opposite side also.Thereby flowing in the former current road that the former current road 24 by the former current road 23 of a described side and opposite side forms hinders inflection point and the corner part that flows owing to do not exist on path direction, so actual current are straight line or approach straight line.In Fig. 3 and Fig. 4, the flowing of the former current road of Reference numeral 231 expression one side, the flowing of the former current road of Reference numeral 241 expression opposite sides.
In addition, as Fig. 1 and shown in Figure 3, protuberance 12a, the 12a... of the opposite side on the mild curve of protuberance 11a, the 11a... of the side on the mild curve of first wire rod 11 and second wire rod 12 are overlapping, are bonded with each other at this overlapping position.In addition, protuberance 12b, the 12b... of the side on the mild curve of protuberance 11b, the 11b... of the opposite side of the mild curve of first wire rod 11 and second wire rod 12 are overlapping, are bonded with each other at this overlapping position.Thereby, as shown in Figure 4, the distance between first wire rod 11,11 of adjacency, and the distance between second wire rod 12,12 of adjacency, that is, flow path width V in form shown in Figure 1, equals 2 times of amplitude H.Therefore, if determined amplitude width H, flow path width V just has been determined.
Below, the preferred another kind of form of the shape that swans with mild curve with reference to Fig. 5 explanation.Fig. 5 is the view of former water separator of the example of the another kind of form of expression.In Fig. 5, the difference of the former water separator of main explanation and Fig. 1.That is, in Fig. 5, be with Fig. 1 difference, the distance between first wire rod 51,51 of adjacency, and the distance between second wire rod 52,52 of adjacency, that is, flow path width V equals amplitude H.On first wire rod 51, second wire rod 52, protuberance 51a, 52a at the downside of mild curve among Fig. 5 are set, the 51b of upside, 52b.Thereby the protuberance 51a on the mild curve of first wire rod 51, the mid portion of 51b are with the mid portion juxtaposition of protuberance 52a, 52b on the mild curve of second wire rod 52.In addition, the upside protuberance 52b of the protuberance 51a of the downside of first wire rod 51 and second wire rod 52 overlaps.And then the downside protuberance 52b of the upside protuberance 51b of first wire rod and second wire rod 52 overlaps.Thereby these superposed part are bonded with each other, and constitute the former water separator 1a of an integral body thus.In the screw type thin-film component that utilizes this former water separator 1a, although flow path width V compares with situation shown in Figure 1, half the width that is equivalent to it, but similarly, between first wire rod 51,51 of adjacency, form the former current road of a side from inflow side X to outflow side Y by the shape that swans with mild curve, between second wire rod 52,52 of adjacency, form the former current road of opposite side to outflow side Y from inflow side X by the shape of wriggling with mild curve.Thereby flowing in the former current road that the former current road by the former current road of a described side and opposite side forms compared with the former water separator of Fig. 1, though have more the tendency that swans, can not produce accumulating of turbid material.
The thickness of former water separator equals the diameter sum of the diameter and second wire rod of first wire rod, and is perhaps thin slightly, in the scope of 0.4～3.0mm.When thickness deficiency 0.4mm, can cause the rising of water flowing pressure differential, be easy to generate accumulating of turbid material simultaneously.On the other hand, when thickness surpassed 3.0mm, when making helical form, the area of the film of each element can be too little, and was impracticable.In addition, the flow path width V as former water separator has no particular limits, but under the situation of the form that adopts Fig. 1, its size is 2 times of amplitude H, under the situation of the form that adopts Fig. 5, and measure-alike with amplitude H.Material as former water separator has no particular limits, but polypropylene and polyethylene consider it is preferred from forming property and cost aspect.In addition, the manufacture method of former water separator does not have specific restriction, can adopt known method, but utilizes the moulded products of mould, considers it is preferred from cost aspect and precision aspect.
Screw type thin-film component of the present invention, be diffusion barrier and aforementioned former water separator with the bag shape be wound up into the permeate water collector pipe together outer peripheral face on and constitute.This coiling can be the diffusion barrier of a bag shape of coiling, also can be the diffusion barrier of a plurality of bags of shapes of coiling.Screw type thin-film component of the present invention can be used for the secondary filter device, the membrane separation device of ultrafiltration apparatus and reverse osmosis membrane separation device etc.As reverse osmosis membrane, can list with respect to the sodium chloride in the saline solution and have the common reverse osmosis membrane of the high clearance rate more than 90% and nano-filtration membrane and loose (Le one ズ) reverse osmosis membrane of low salt rejection rate.Although nano-filtration membrane and loose reverse osmosis membrane have the desalination performance, and be lower than the desalting performance of common reverse osmosis membrane, they have the separating property of hardness components such as Ca, Mg especially.In addition, nano-filtration membrane and loose reverse osmosis membrane are known as the NF film sometimes.
Reverse osmosis membrane assembly of the present invention as long as be equipped with said spiral type thin-film component, has no particular limits, and for example, can list the reverse osmosis membrane assembly with structure shown in Figure 6.As shown in Figure 6, with the reverse osmosis membrane 61 of bag shape and former water separator together in the shape of a spiral shape be wound up on the outer peripheral face of permeate water collector pipe 60, with external packing body 62 its tops of lining.Outstanding forward in order to prevent to be wound into spiral helicine reverse osmosis membrane 61, the telescopic securing member 64 with a plurality of radial ribs is installed on its two ends.Form a screw type thin-film component 65 with these permeate water collector pipes 60, reverse osmosis membrane 61, external packing body 62, telescopic securing member 64, with the connector (not shown) each permeate water collector pipe 60 is communicated with, in shell 66, fills a plurality of screw type thin-film components 65.In addition, between the interior week of the periphery of screw type thin-film component 65 and shell 66, form gap 67, with inaccessible this gap 67 of salt watertight seal (Block ラ イ シ one Le).In addition, on an end of shell 66, set up and make former water flow into the former water inflow pipe (not shown) that enclosure is used, on the other end, set up the processing water pipe (not shown) and the non-water pipe (not shown) that sees through that are communicated with permeate water collector pipe 60, constitute reverse osmosis membrane assembly 69 by shell 66, its internal part and pipe arrangement (nozzle) etc.
When the reverse osmosis membrane assembly 69 that utilizes this structure is handled former water, utilize pump that the end of former water from shell 66 is pressed into, shown in the arrow line among Fig. 6, former water is by between each radial rib 63 of telescopic securing member 64, enter in the initial screw type thin-film component 65, the former water of a part passes the former current road that is marked off by the former water separator between the film of screw type thin-film component 65, arrive next screw type thin-film component 65, the former water of other parts sees through reverse osmosis membrane 61 and becomes permeate water, and described permeate water is converged in the permeate water collector pipe 60.Like this, therefore former water pass each screw type thin-film component 65, do not see through the former water of reverse osmosis membrane, condensed water as turbid material that contains high concentration and ionic impurity, be removed from the other end of shell 66, to, be extracted outside the shell 66 via permeate water collector pipe 60 as permeate water through the permeate water of reverse osmosis membrane.In addition, reverse osmosis membrane assembly of the present invention is equipped with a plurality of screw type thin-film components as shown in Figure 6, in addition, a screw type thin-film component for example can be installed also.
As reverse osmosis membrane apparatus of the present invention,, comprise that at least former water supplies such as for example one or more aforementioned reverse osmosis membrane assembly, pump, former water flow into pipe arrangement, condensed water flows out pipe arrangement and permeate water flows out pipe arrangement though have no particular limits.Former water as directly being supplied to reverse osmosis membrane apparatus of the present invention can list water for industrial use, water channel water and recycle-water.Turbidity as former water has no particular limits, even turbidity is the former water of high turbidity about 2 degree, also can not produce the rising of the water flowing pressure differential that the obturation of turbid material causes etc.In addition, contain in former water under the situation of thick particle such as sand grains, former water also comprises the processing water crossed by the thick filter process of mesh in advance, added the former water that prevents scaling and give birth to the dispersant of usefulness such as dirt.By adding dispersant, can further suppress turbid material accumulating on former water separator and face.As dispersant, for example, can list " hypersperse MSI300 ", " " hypersperse MDC200 " (being the ARGOSCIENTIFIC corporate system) of selling on the market.According to reverse osmosis membrane apparatus of the present invention, the turbid material that can omit in the prior art to remove in the former water is the cyclator that purpose is used, the setting of pretreating devices such as filter and film processing.Therefore, in the simplification system, reduce area is set, reduce cost aspect, can obtain epoch-making effect.
An example of the reverse osmosis membrane apparatus of the invention process form is described below with reference to Fig. 7.In Fig. 7, reverse osmosis membrane apparatus 70, dispose successively: former water supply 71, prime reverse osmosis membrane assembly 70A and back level reverse osmosis membrane assembly 70B, former water supply 71 is connected by former water supply pipe arrangement 72 with prime reverse osmosis membrane assembly 70A, prime reverse osmosis membrane assembly 70A flows out pipe arrangement 73 with back level reverse osmosis membrane assembly 70B by the elementary permeate water that the permeate water of prime reverse osmosis membrane assembly 70A is supplied as the processed water of the device of back level and is connected, on back level reverse osmosis membrane assembly 70B, what be equipped with that the permeate water of discharging permeate water flows out that 74 grades of pipe arrangements make that condensed water returns former water supply pipe arrangement 72 returns pipe arrangement 75.In addition, on prime reverse osmosis membrane assembly 70A, be equipped with condensed water to flow out pipe arrangement 76.Prime reverse osmosis membrane assembly 70A of the present inventionly can not cause the reverse osmosis membrane apparatus that turbid material is accumulated, and a back level reverse osmosis membrane assembly 70B is the reverse osmosis membrane apparatus of prior art.
Secondly, utilize the reverse osmosis membrane apparatus 70 of the example of this form of implementation that the method for handling former water is described.At first, by former water supply 71 former water is supplied to prime reverse osmosis membrane assembly 70A.Former water is handled by prime reverse osmosis membrane assembly 70A, flows out pipe arrangement 76 from condensed water and obtains elementary condensed water, simultaneously, flows out pipe arrangement 73 from elementary permeate water and obtains elementary permeate water.Secondly, level reverse osmosis membrane assembly 70B handles this elementary permeate water with the back, flows out pipe arrangement 74 from permeate water and obtains secondary permeate water, and simultaneously, secondary condensed water turns back to former water supply pipe arrangement 72 from returning pipe arrangement 75.This secondary condensed water is to use the back level reverse osmosis membrane assembly 70B concentrated water of the permeate water of desalination in prime reverse osmosis membrane assembly 70A, and its electrical conductivity is lower than former water.Therefore, whole secondary condensed water circulations can be made, the water rate of recovery can be improved.In addition, since reverse osmosis membrane apparatus 70 replace using in the device of prior art types to remove the pretreating device of turbid material as purpose, use the reverse osmosis membrane assembly of accumulating that can suppress turbid material among the present invention significantly in prime, so, reverse osmosis membrane on two-stage, used in fact.Because the pretreating device in the device of prior art type does not have the desalination function certainly, so reverse osmosis membrane apparatus 70 is compared with the reverse osmosis membrane apparatus of prior art type, the water quality of permeate water is also extremely excellent.
(embodiment)
Embodiment 1
Making turbidity is that 2 degree, electrical conductivity are the reverse osmosis membrane assembly A of the water for industrial use of 20mS/m by following specification, under following operating condition, carries out 2000 hours endurance running.To the performance evaluation of reverse osmosis membrane assembly A, the water flowing pressure differential (MPa) when being determined at start of run and 2000 hours, see through the water yield (1/ minute) and see through electrical conductivity of water (mS/m) and carry out.After 2000 hours, reverse osmosis membrane assembly is disintegrated, observe the adhesion condition of the turbid material in the former current road.Measured value the results are shown in table 1, the visualization on former current road the results are shown in table 2.In table 1, water flowing pressure differential and the scaled value when seeing through electrical conductivity of water and being 25 ℃.
(reverse osmosis membrane assembly A)
Make structure as shown in Figures 1 and 2, amplitude H/ wavelength L is 0.66, wavelength L is that 15mm, amplitude H are that 10mm, former current degree of having a lot of social connections V are that 20mm, thickness are the former water separator A of 1.0mm.Secondly, utilize this former water separator A, make screw type thin-film component A, and then, the reverse osmosis membrane assembly A of structure as shown in Figure 6 made.But this reverse osmosis membrane assembly A is an assembly that holds a screw type thin-film component.
(operating condition)
At operating pressure is that 0.75Mpa, condensed water flow are 2.7m
3/ hour, water temperature is under 25 ℃ the situation, carry out per 8 hours once, the flushing in 60 seconds (carries out such operation: all open the valve that is attached on the condensed water effuser, will be when handling the former water of 3 times flow of former water supply flow, be supplied to hastily in the reverse osmosis membrane assembly, the discharge water of flushing is flowed out from the condensed water effuser).
Embodiment 2
Replace reverse osmosis membrane assembly A, below utilizing shown in the reverse osmosis membrane assembly B of specification, in addition, with the same operating condition of embodiment 1 under carry out 2000 hours endurance running.The evaluation result of the performance of reverse osmosis membrane assembly B is shown in table 1 and table 2.
(reverse osmosis membrane assembly B)
Replace former water separator A, utilization have structure shown in Figure 5, amplitude H/ wavelength L is 0.66, wavelength L is 10mm, the thickness former water separator B for 1.0mm for 15mm, amplitude H for 10mm, former current degree of having a lot of social connections V, in addition, make of the method identical with aforementioned reverse osmosis membrane assembly A.
Embodiment 3
Making turbidity is that 2 degree, electrical conductivity are the reverse osmosis membrane apparatus of the water for industrial use of 20mS/m by following specification and stream as shown in Figure 7, under following operating condition, carries out 2000 hours endurance runnings.The performance evaluation of reverse osmosis membrane apparatus the results are shown in table 1 and table 2.In addition, the result of table 1 is the result of back level reverse osmosis membrane apparatus.
(reverse osmosis membrane apparatus)
As the prime reverse osmosis membrane assembly, utilize the reverse osmosis membrane assembly B that uses among the embodiment 2, as back level reverse osmosis membrane assembly, use an assembly that 8 inches element ES-10 (day Dong Diangongshe system) is installed.The former water separator that is used for this ES-10 is the cancellous parts of grid.
(operating condition)
Prime reverse osmosis membrane assembly and back level reverse osmosis membrane assembly are that 0.7MPa, condensed water flow are 2.7m at operating pressure together
3/ hour, water temperature is under 25 ℃ the situation, only to the prime reverse osmosis membrane assembly carry out per 8 hours once, the flushing in 60 seconds (operation same) with embodiment 1.
Embodiment 4
Replace reverse osmosis membrane assembly A, utilize the reverse osmosis membrane assembly C of specification as follows, in addition, with the same operating condition of embodiment 1 under carry out 2000 hours endurance running.The performance evaluation of reverse osmosis membrane assembly C the results are shown in table 1 and table 2.
(reverse osmosis membrane assembly C)
Replace former water separator A, utilization have structure shown in Figure 1, amplitude H/ wavelength L is 0.2, wavelength L is 40mm, the thickness former water separator C for 1.0mm for 100mm, amplitude H for 20mm, former current degree of having a lot of social connections, in addition, the same method of utilization and aforementioned reverse osmosis membrane A is made.
Comparative example 1
Handle the known pretreating device that constitutes in the prime configuration by film, replace screw type thin-film component A, utilize 8 inches element ES-10 (day Dong Diangongshe system), in addition, with carrying out with embodiment 1 identical method.That is, be that 2 degree, electrical conductivity are the water for industrial use of 20mS/m with turbidity, handle with pretreating device, this processing water is further handled with the commercially available reverse osmosis membrane assembly of prior art.It the results are shown in table 1 and table 2.
Comparative example 2
Replace screw type thin-film component A, utilize 8 inches element ES-10 (day Dong Diangongshe system), in addition, with carrying out with embodiment 1 identical method.That is, be that 2 degree, electrical conductivity are the water for industrial use of 20mS/m with turbidity, handle without pretreating device, directly handle with the commercially available reverse osmosis membrane assembly of prior art.It the results are shown in table 1 and table 2.In addition, in this comparative example 2, in the time of 800 hours, the water flowing pressure differential extremely rises, and can not obtain permeate water, so shut down constantly at this.
Comparative example 3
Replace reverse osmosis membrane assembly A, utilize the reverse osmosis membrane assembly D of following specification, in addition under the operating condition identical, carry out 2000 hours endurance running with embodiment 1.It the results are shown in table 1 and table 2.In addition, this reverse osmosis membrane assembly D is an assembly that holds a screw type film assembly.
(reverse osmosis membrane assembly D)
Replace former water separator A, utilization has structure shown in Figure 1 that the spy opens flat 10-156152 communique, is aforementioned structure shown in Figure 8, thickness is that the angle e of 1.0mm, inflection point part is 60 degree, distance between the inflection point is the former water separator E of 5mm, in addition, the same method of usefulness and aforementioned reverse osmosis membrane assembly A is made.
Table 1
Water flowing pressure differential [MPa] sees through the water yield [l/ minute] permeate water electrical conductivity [mS/m]
Start of run 2000hr start of run 2000hr start of run 2000hr
Embodiment 1 0.015 0.021 18 15 0.40 0.55
Embodiment 2 0.015 0.022 18 15 0.40 0.55
Embodiment 3 0.020 0.020 20 20 0.03 0.03
Embodiment 4 0.013 0.018 18 15 0.40 0.55
Comparative example 1 0.020 0.022 20 20 0.30 0.30
Comparative example 2 0.020-20-0.30-
Comparative example 3 0.020 0.075 19 8 0.35 1.90
Table 2
The visualization result on the former current road behind the 2000hr
Embodiment 1 has only turbid material seldom to adhere to
Embodiment 2 has only turbid material seldom to adhere to
Embodiment 3 (prime RO) does not almost have turbid material to adhere to
Embodiment 3 (back level RO) does not have turbid material to adhere to fully
Embodiment 4 has only turbid material seldom to adhere to (lacking than embodiment 1,2)
Comparative example 1 does not almost have turbid material to adhere to
Comparative example 2 adheres to turbid material with almost being entirely shut in former current road degree
Comparative example 3 is mainly accumulated turbid material in the inflection point part
In embodiment 1～4, after 2000 hours, the water flowing pressure differential rises hardly, sees through the water yield and does not also descend, and the water quality of permeate water is good.In the performance evaluation of comparative example 1 after 2000 hours, demonstrate the result inferior, but it need be provided with pretreating device, need the other place being set and cost is set unlike embodiment.Thereby, the comparison other of embodiment 1～4 is comparative example 2 and 3, but comparative example 2 is in the time of about 800 hours, the permeate water quantitative change becomes zero, adhering to of turbid material is very serious, and comparative example 3 can see that 2000 hours stage the water flowing pressure differential rises significantly, see through the water yield and reduce significantly, can estimate about 3000～4000 hours, can not use.
Utilizability on the industry
According to screw type thin-film component of the present invention, former water is in the shape that swans with mild curve Wire rod gently swans to the outflow side from the inflow side along face each other, perhaps almost is straight Wire flows. Therefore, can suppress significantly the accumulating of turbid material in the former current road. According to this Bright reverse osmosis membrane assembly and reverse osmosis membrane apparatus can omit in the prior art to remove in the former water Muddy thing is the setting of the pretreating device that uses of purpose. Therefore, in simplification system, minimizing face is set The aspect such as amass, reduce cost, can obtain significant effect. And then, even supply without pre-treatment Answer the high former water of turbidity such as water for industrial use, also be difficult to accumulate turbid material, can advance long-term and stably Water treatment works.
Claims (4)
1, a kind of screw type thin-film component, be diffusion barrier and former water separator with the bag shape be wound up into the permeate water collector pipe together outer peripheral face on and constitute, it is characterized in that, this former water separator is made of first wire rod and second wire rod that extend by the shape that swans with mild curve to the outflow side from the inflow side of former water, when the face of this first wire rod relative side in this diffusion barrier extends, between the first adjacent wire rod, form the former current road of a side, when the face of this second wire rod relative opposite side in this diffusion barrier extends, between second wire rod of adjacency, form the former current road of opposite side, this first wire rod and this second wire rod part are overlapping, are bonded together at this overlapping position.
2, screw type thin-film component as claimed in claim 1, it is characterized in that the aforementioned shape that swans with mild curve is the shape with systematicness of no inflection point, the ratio (H/L) of amplitude H and wavelength L is 0.02～2, and per 1 meter of the single line material is 1～100 wavelength.
3, a kind of reverse osmosis membrane assembly is characterized in that, has screw type thin-film component as claimed in claim 1 or 2.
4, a kind of reverse osmosis membrane apparatus is characterized in that, has the described reverse osmosis membrane assembly of claim 3.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP209460/2002 | 2002-07-18 | ||
| JP2002209460A JP2004050005A (en) | 2002-07-18 | 2002-07-18 | Spiral membrane element, reverse osmosis membrane module, and reverse osmosis membrane apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1642625A true CN1642625A (en) | 2005-07-20 |
| CN1320948C CN1320948C (en) | 2007-06-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB038068273A Expired - Fee Related CN1320948C (en) | 2002-07-18 | 2003-06-11 | Spiral membrane element, reverse osmosis membrane module, and reverse osmosis membrane device |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JP2004050005A (en) |
| KR (1) | KR20050025154A (en) |
| CN (1) | CN1320948C (en) |
| AU (1) | AU2003242262A1 (en) |
| MY (1) | MY137069A (en) |
| TW (1) | TWI239262B (en) |
| WO (1) | WO2004009222A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100515549C (en) * | 2005-10-31 | 2009-07-22 | 日东电工株式会社 | Spiral separation membrane element |
| CN103316590A (en) * | 2013-07-16 | 2013-09-25 | 北京倍杰特国际环境技术有限公司 | Raw water separator for spiral membrane module, membrane module containing separator and reverse osmosis membrane device |
| CN108883367A (en) * | 2016-09-28 | 2018-11-23 | 株式会社Lg化学 | Reverse osmosis filter module |
| RU2703622C1 (en) * | 2016-11-18 | 2019-10-21 | Нитто Денко Корпорейшн | Untreated water flow path separator and roll-type membrane element equipped with it |
| CN111225733A (en) * | 2017-11-03 | 2020-06-02 | 株式会社Lg化学 | Water treatment filter module and device and method for producing a helical strand of a water treatment filter module |
| CN112135680A (en) * | 2018-05-18 | 2020-12-25 | 日东电工株式会社 | Flow path spacer and spiral membrane element |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4688140B2 (en) * | 2004-03-26 | 2011-05-25 | 日東電工株式会社 | Spiral type separation membrane element |
| KR101107530B1 (en) | 2004-03-26 | 2012-01-31 | 닛토덴코 가부시키가이샤 | Spiral type separation membrane element |
| JP4488431B2 (en) * | 2005-12-22 | 2010-06-23 | 日東電工株式会社 | Spiral type separation membrane element |
| KR100990348B1 (en) | 2006-03-09 | 2010-10-29 | 닛토덴코 가부시키가이샤 | Spiral membrane element and process for producing the same |
| JP5204994B2 (en) | 2007-06-11 | 2013-06-05 | 日東電工株式会社 | Spiral type membrane element and manufacturing method thereof |
| JP5828328B2 (en) * | 2013-02-20 | 2015-12-02 | 栗田工業株式会社 | Operation method of reverse osmosis membrane device and reverse osmosis membrane device |
| FR3037797B1 (en) | 2015-06-24 | 2018-08-17 | Kylane Laboratoires Sa | PROCESS FOR THE PREPARATION OF AN INJECTABLE RETICULATED HYDROGEL HYDROGEL OBTAINED; USE OF HYDROGEL OBTAINED |
| NL2016462B1 (en) * | 2016-03-21 | 2017-10-04 | Stichting Wetsus European Centre Of Excellence For Sustainable Water Tech | Membrane filtration device and method for minimizing or reducing fouling in such device. |
| KR20200064718A (en) | 2018-11-29 | 2020-06-08 | 도레이첨단소재 주식회사 | Membrane Module for Water-treatment |
| KR102436315B1 (en) * | 2019-10-02 | 2022-08-25 | 주식회사 엘지화학 | Feed spacer and separation membrane element |
| KR102306146B1 (en) * | 2019-11-28 | 2021-09-30 | 한국지질자원연구원 | Blown membrane and that manufacturing method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6227701U (en) * | 1985-08-01 | 1987-02-19 | ||
| JP3690012B2 (en) * | 1996-12-03 | 2005-08-31 | 栗田工業株式会社 | Spiral membrane element |
| US6656362B1 (en) * | 1998-06-18 | 2003-12-02 | Toray Industries, Inc. | Spiral reverse osmosis membrane element, reverse osmosis membrane module using it, device and method for reverse osmosis separation incorporating the module |
| ES2249867T3 (en) * | 1999-06-08 | 2006-04-01 | Nitto Denko Corporation | MEMBRANE MODULE FOR THE SEPARATION OF LIQUIDS AND METHOD TO MANUFACTURE THE SAME. |
| JP2000042378A (en) * | 1999-08-20 | 2000-02-15 | Toray Ind Inc | Fluid separation element |
-
2002
- 2002-07-18 JP JP2002209460A patent/JP2004050005A/en active Pending
-
2003
- 2003-06-11 KR KR1020047016126A patent/KR20050025154A/en not_active Application Discontinuation
- 2003-06-11 CN CNB038068273A patent/CN1320948C/en not_active Expired - Fee Related
- 2003-06-11 AU AU2003242262A patent/AU2003242262A1/en not_active Abandoned
- 2003-06-11 WO PCT/JP2003/007393 patent/WO2004009222A1/en active Application Filing
- 2003-06-18 TW TW092116516A patent/TWI239262B/en not_active IP Right Cessation
- 2003-07-08 MY MYPI20032556A patent/MY137069A/en unknown
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100515549C (en) * | 2005-10-31 | 2009-07-22 | 日东电工株式会社 | Spiral separation membrane element |
| CN103316590A (en) * | 2013-07-16 | 2013-09-25 | 北京倍杰特国际环境技术有限公司 | Raw water separator for spiral membrane module, membrane module containing separator and reverse osmosis membrane device |
| CN108883367A (en) * | 2016-09-28 | 2018-11-23 | 株式会社Lg化学 | Reverse osmosis filter module |
| RU2703622C1 (en) * | 2016-11-18 | 2019-10-21 | Нитто Денко Корпорейшн | Untreated water flow path separator and roll-type membrane element equipped with it |
| CN111225733A (en) * | 2017-11-03 | 2020-06-02 | 株式会社Lg化学 | Water treatment filter module and device and method for producing a helical strand of a water treatment filter module |
| CN111225733B (en) * | 2017-11-03 | 2022-04-05 | 株式会社Lg化学 | Water treatment filter module and device and method for producing a helical strand of a water treatment filter module |
| US11760658B2 (en) | 2017-11-03 | 2023-09-19 | Lg Chem, Ltd. | Water-treatment filter module, and apparatus and method for manufacturing helical strand of water-treatment filter module |
| CN112135680A (en) * | 2018-05-18 | 2020-12-25 | 日东电工株式会社 | Flow path spacer and spiral membrane element |
| CN112135680B (en) * | 2018-05-18 | 2022-10-28 | 日东电工株式会社 | Flow path spacer and spiral membrane element |
Also Published As
| Publication number | Publication date |
|---|---|
| TW200401664A (en) | 2004-02-01 |
| WO2004009222A1 (en) | 2004-01-29 |
| CN1320948C (en) | 2007-06-13 |
| JP2004050005A (en) | 2004-02-19 |
| MY137069A (en) | 2008-12-31 |
| TWI239262B (en) | 2005-09-11 |
| AU2003242262A1 (en) | 2004-02-09 |
| KR20050025154A (en) | 2005-03-11 |
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