WO2016076397A1 - スパイラル型膜エレメント用透過側流路材、及びその製造方法 - Google Patents
スパイラル型膜エレメント用透過側流路材、及びその製造方法 Download PDFInfo
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- WO2016076397A1 WO2016076397A1 PCT/JP2015/081869 JP2015081869W WO2016076397A1 WO 2016076397 A1 WO2016076397 A1 WO 2016076397A1 JP 2015081869 W JP2015081869 W JP 2015081869W WO 2016076397 A1 WO2016076397 A1 WO 2016076397A1
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- flow path
- side channel
- permeation
- resin sheet
- channel material
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Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
Definitions
- the present invention relates to a permeation-side channel material used for a spiral membrane element (hereinafter sometimes abbreviated as “membrane element”) for separating and concentrating a specific substance or the like from various liquids, a method for producing the same, and
- membrane element used for separating and concentrating a specific substance or the like from various liquids, a method for producing the same, and
- the present invention relates to a membrane element using the permeation side channel material.
- a spiral membrane element including the center tube 5 and a sealing portion 21 that prevents mixing of the supply side passage and the permeation side passage is used (see Patent Document 1).
- the membrane element 1 When the membrane element 1 is used, the supply liquid 7 is supplied from one end face side of the membrane element 1, and the supplied supply liquid 7 is along the supply-side flow path member 6 in the axial direction A 1 of the central tube 5. And is discharged as a concentrate 9 from the other end face side of the membrane element 1.
- the permeated liquid 8 that has permeated the composite semipermeable membrane 2 in the process in which the supply liquid 7 flows along the supply-side flow path material 6 opens the opening 5a along the permeation-side flow path material 3 as shown by the broken line arrows in the figure. From the inside of the central tube 5 and discharged from the end of the central tube 5.
- a knitted fabric obtained by tricot knitting a thermoplastic synthetic fiber such as polyester is used to impregnate with epoxy, or a high melting point polyester is used as a core material.
- a tricot knitted fabric knitted with filaments using a low melting point polyester as a sheath material is heat-treated to fuse the low melting point resin to make it rigid (Patent Documents 1 and 2).
- an object of the present invention is to improve productivity and to provide a cheap and high-quality permeation-side channel material for spiral membrane elements, a manufacturing method thereof, and a membrane element using the permeation-side channel material. Is to provide.
- the manufacturing method of the permeation side channel material for spiral membrane element of the present invention is a ridge forming step of forming a plurality of ridges in a direction along the longitudinal direction while conveying a long resin sheet. And an opening forming step of forming a plurality of openings in a plurality of rows in a direction along the longitudinal direction while conveying a long resin sheet.
- the manufacturing method of the permeation-side channel material of the present invention since a long resin sheet is used as a raw material, a spinning process and a knitting process are not required compared to the case of using a knitted fabric, thereby reducing costs and productivity. Can be improved. Moreover, since the ridge forming step and the opening forming step are included, the same function as that obtained by making the tricot knitted fabric impregnated with epoxy can be stably imparted. In the ridge forming step, a plurality of rows of ridge portions are formed in the direction along the longitudinal direction, and therefore can be continuously performed with a simple device.
- the opening forming step a plurality of rows of openings are formed in the direction along the longitudinal direction, so that it can be continuously performed with a simple apparatus. Furthermore, since the surface roughness of the flow path of the permeate-side flow path material is smaller than before, the pressure loss can be suppressed low. As a result, productivity can be improved, and a low-cost and high-quality method for manufacturing a permeation-side channel material for spiral membrane elements can be provided.
- the protruding line forming step forms protruding lines on both sides of the resin sheet.
- the protruding line forming step forms protruding lines on both sides of the resin sheet.
- the protrusions formed on both sides of the resin sheet have different heights on both sides. According to this configuration, the permeated water mainly flows through the groove formed by the higher convex portion of the obtained permeate-side channel material, and the overall pressure loss can be reduced.
- the method further includes a step of making the cross section of the ridge portion closer to a rectangle after the ridge formation step.
- a step of making the cross section of the ridge portion closer to a rectangle it is possible to obtain an effect that the pressure resistance is enhanced and the film surface is hardly damaged.
- the permeation side channel material for spiral membrane element of the present invention is a resin sheet having a plurality of ridges formed in parallel and a plurality of openings formed between the ridges. It is characterized by becoming.
- the permeation-side flow path material for spiral membrane element of the present invention is composed of a resin sheet having a plurality of ridges formed in parallel and a plurality of openings formed between the ridges. Therefore, it is possible to manufacture with a simple manufacturing process using an inexpensive raw material, and to obtain a permeation-side flow path material with stable quality. As a result, productivity can be improved, and an inexpensive and high-quality permeation-side channel material for spiral membrane elements can be provided.
- the ridges are formed on both sides of the resin sheet. Moreover, it is preferable that the convex stripe part formed in the both sides of the said resin sheet differs in height in both sides. Furthermore, it is preferable that a cross section of the ridge is rectangular.
- the spiral membrane element of the present invention includes a laminated body including a composite semipermeable membrane, a supply-side channel material and a transmission-side channel material, a perforated central tube around which the laminate is wound, a supply-side flow
- the permeation side flow path material is the permeation side flow path material according to any one of the above.
- FIG. 3 is a partially cutaway perspective view showing an example of a spiral membrane element of the present invention.
- the permeation side channel material of the present invention is used for a spiral membrane element.
- the overall configuration of the spiral membrane element will be described in detail later, but any conventionally known configuration can be adopted for the configuration other than the permeate-side channel material.
- the permeation-side flow path material of the present invention has a plurality of ridges 31 formed in parallel in a plurality of rows, and a plurality of openings 32 each formed between the ridges 31. It consists of a resin sheet. That is, the opening 32 is formed in the thin portion 33 of the resin sheet.
- the ridges 31 are formed on both sides of the resin sheet, and the formed upper ridges 31a and lower ridges 31b are different in height on both sides. .
- the material of the resin sheet is not particularly limited as long as it is thermoplastic, but polyester resins such as polyethylene terephthalate resin and polybutylene terephthalate resin, polyolefin resins such as polypropylene resin and polyethylene resin, and polyamide resins such as nylon resin are suitable. Can be used.
- the ridge portion 31 and the thin portion 33 are integrally formed of the same material.
- the total thickness of the permeate-side channel material 3 is determined by the total height of the ridges 31 and the thickness of the thin-walled portion 33, but wound around the membrane element while ensuring sufficient strength and permeate-side channels. From the viewpoint of securing the film area at the time, it is preferably 0.1 to 1 mm, more preferably 0.2 to 0.4 mm.
- the thickness of the thin portion 33 is preferably 0.01 to 0.1 mm, more preferably 0.02 to 0.05 mm, from the viewpoint of obtaining sufficient strength while ensuring the permeation side flow path.
- the ratio of the height when the ridge portions 31 are formed on both sides of the resin sheet is such that the height of the higher ridge portion 31a is lower from the viewpoint of reducing the overall pressure loss of the permeate side flow path.
- the height of the ridge portion 31b is preferably 1.5 to 10 times, more preferably 2 to 5 times.
- a groove is formed between the ridges 31, but the width of the groove (width at the upper surface) is sufficient to secure a permeate-side flow path while suppressing deterioration in performance due to film deformation. 0.08 to 0.6 mm is preferable, and 0.1 to 0.45 mm is more preferable.
- the width on the upper surface of the protrusion 31 is preferably 0.1 to 0.6 mm, and more preferably 0.15 to 0.4 mm.
- a cross-sectional shape of the ridge portion 31 a trapezoid or the like is preferable in addition to a rectangle such as a square or a rectangle, and a case where the cross-sectional shape is a rectangle is particularly preferable.
- the cross-sectional shape such as a rectangle includes those whose corners are chamfered.
- the shape of the opening 32 formed in the thin-walled portion 33 can be an ellipse, a long hole, or a rectangular hole in addition to a circle, but is preferably a circle or a substantially circle from the viewpoint of workability and strength.
- the diameter of the opening 32 formed in the thin portion 33 or the length in the width direction is substantially the same as the groove width, but the length in the direction along the groove can be adjusted according to the shape of the opening 32. is there.
- the length in the width direction can be 1.1 to 5 times.
- the opening ratio of the opening 32 in the thin portion 33 is preferably 25 to 75% from the viewpoint of strength and easy distribution of the adhesive resin during assembly.
- the formation positions of the openings 32 formed between the ridges 31 are preferably regular from the viewpoint of workability, and more preferably formed at an equal pitch. Moreover, the formation position of the opening 32 in each row may be the same or different.
- the solid shape of the opening 32 may be the same cross-sectional shape, but may be enlarged or reduced in one direction.
- the permeation side channel material for spiral membrane element of the present invention can be suitably manufactured by the manufacturing method of the present invention described below.
- the manufacturing method of the present invention includes a ridge forming step of forming a plurality of ridges 31 in a direction along the longitudinal direction while conveying a long resin sheet 30. And an opening forming step of forming a plurality of rows of openings 32 one by one in the direction along the longitudinal direction while conveying a long resin sheet.
- a ridge forming step of forming a plurality of ridges 31 in a direction along the longitudinal direction while conveying a long resin sheet 30.
- an opening forming step of forming a plurality of rows of openings 32 one by one in the direction along the longitudinal direction while conveying a long resin sheet.
- ridge forming step As shown in FIG. 2A, a plurality of rows of ridge portions 31 are formed.
- a method of pressing to form a predetermined shape can be employed.
- a ridge forming step is performed by embossing using an embossing roll 35 provided with a plurality of grooves in the circumferential direction and a smooth heating roll 36, and continuously passing between the two. Can be implemented.
- the heating and pressing conditions at that time are appropriately set according to the material and processing speed of the resin sheet 30.
- embossing roll it is also possible to carry out by sequentially performing compression molding using a press device provided with a plurality of grooves parallel to a flat mold.
- the shape of the ridge portion 31 to be formed is preferably a shape in which the lower side widens like a trapezoid or a triangle from the viewpoint of workability. Moreover, it is preferable from the viewpoint of workability to form the height higher than the final height of the ridges 31.
- the ridges 31 are formed on one surface of the resin sheet 30 and the ridges 31 are also formed on the other surface in a later step. It is also possible to perform. In that case, what is necessary is just to perform embossing, heating a roll using the embossing roll which opposes. However, as in the present embodiment, by performing the process in two steps, the effect of facilitating the processing can be obtained when deburring is necessary after the drilling.
- a plurality of rows of openings 32 are formed one by one.
- a method using a laser irradiation device 37 is used as shown in FIG. It is done. It is also possible to perform punching by a press or the like, and drilling by combining an embossing roll with a sharp pattern and an elastic roll.
- the thin protrusion 33 is further thinned by calendaring or the like, thereby forming the lower protrusion 31b.
- an embossing roll 35 provided with a plurality of grooves in the circumferential direction and a heating roll 38 provided with a plurality of grooves for receiving the upper ridges 31a are used, and the gap between them is continuous.
- the lower ridge portion 31b can be formed by embossing.
- the protruding strips 31a and 31b on both sides are slightly flattened and the thickness is adjusted to a predetermined thickness.
- two embossing rolls 35 provided with a plurality of grooves in the circumferential direction are used, and the protrusions on both sides are embossed by continuously passing between the two while heating them.
- the portions 31a and 31b can be slightly flattened.
- the manufactured product is wound on a roll.
- the permeation-side channel material having a predetermined shape may be continuously manufactured by cutting a long product without winding it on a roll.
- the spiral membrane element of the present invention includes a laminated body including the composite semipermeable membrane 2, the supply-side flow path material 6 and the permeation-side flow path material 3, and a hole around which the laminated body is wound.
- the center tube 5 and a sealing portion 21 that prevents mixing of the supply-side flow path and the permeation-side flow path are provided, and the permeation-side flow path material 3 of the present invention is used.
- the sealing part 21 for preventing mixing of the supply side flow path and the permeation side flow path is obtained by, for example, superimposing the composite semipermeable membrane 2 on both surfaces of the permeation side flow path material 3 and bonding the three sides.
- the sealing part 21 is formed on the sealing part 21 on the outer peripheral side edge, the upstream side edge, and the downstream side edge.
- the envelope film 4 is attached to the central tube 5 at its opening, and is wound spirally around the outer peripheral surface of the central tube 5 together with the net-like (net-like) supply-side flow path member 6 so that the wound body R becomes It is formed.
- An upstream end member 10 such as a seal carrier is provided on the upstream side of the wound body R, and a downstream end member 20 such as a telescope prevention member is provided on the downstream side as necessary.
- the supply liquid 7 is supplied from one end face side of the membrane element 1.
- the supplied supply liquid 7 flows along the supply-side flow path material 6 in a direction parallel to the axial direction A1 of the central tube 5 and is discharged as a concentrated liquid 9 from the other end face side of the membrane element 1.
- the permeated liquid 8 that has permeated through the composite semipermeable membrane 2 in the process of the supply liquid 7 flowing along the supply-side flow path material 6 is opened along the permeation-side flow path material 3 as shown by the broken line arrows in the figure. It flows into the center tube 5 from 5a and is discharged from the end of the center tube 5.
- the supply-side flow path member 6 generally has a role of ensuring a gap for uniformly supplying fluid to the membrane surface.
- a supply-side flow path member 6 for example, a net, a knitted fabric, a concavo-convex processed sheet or the like can be used, and a material having a maximum thickness of about 0.1 to 3 mm can be used as necessary.
- the pressure loss is low, and further, a material that causes an appropriate turbulent flow effect is preferable.
- the flow path material is installed on both surfaces of the separation membrane, different flow path materials are generally used as the supply side flow path material 6 on the supply liquid side and the permeate side flow path material 3 on the permeate side. It is.
- the supply-side channel material 6 uses a coarse and thick net-like channel material, while the permeate-side channel material 3 uses a fine woven or knitted channel material.
- the supply side channel material 6 is provided on the inner surface side of the bi-folded composite semipermeable membrane.
- a network structure in which linear objects are generally arranged in a lattice shape can be preferably used.
- the material to be constructed is not particularly limited, but polyethylene or polypropylene is used. These resins may contain bactericides and antibacterial agents.
- the thickness of the supply side channel material 6 is generally 0.2 to 2.0 mm, preferably 0.5 to 1.0 mm. If the thickness is too thick, the amount of permeation decreases with the amount of the film that can be accommodated in the element. Conversely, if the thickness is too thin, contaminants adhere and are likely to be clogged, so that permeation performance is likely to deteriorate.
- the center tube 12 only needs to have an opening 12a around the tube, and any conventional tube can be used.
- any conventional tube can be used.
- the permeated water that has passed through the composite semipermeable membrane 2 enters the central tube 12 through the hole in the wall surface to form a permeated water flow path.
- the length of the central tube 12 is generally longer than the length in the axial direction of the element, but the central tube 12 having a connection structure such as being divided into a plurality of elements may be used.
- tube 12 A thermosetting resin or a thermoplastic resin is used.
- the spiral membrane element of the present invention may be trimmed at both ends of the wound body R after resin sealing in order to adjust the length in the axial direction A1. Further, a perforated end member for preventing deformation (such as a telescope), a sealing material, a reinforcing material, an exterior material, and the like can be provided as necessary.
- the composite semipermeable membrane preferably has a separation functional layer on the surface of the porous support, and the porous support is preferably a nonwoven fabric formed with a polymer porous layer.
- Such composite semipermeable membranes are called RO (reverse osmosis) membranes, NF (nanofiltration) membranes, and FO (forward osmosis) membranes depending on their filtration performance and treatment method, and they are used for ultrapure water production and seawater desalination. It can be used for desalination of brine, reuse of waste water, etc.
- the separation function layer examples include polyamide, cellulose, polyether, and silicon separation function layers, and those having a polyamide separation function layer are preferable.
- the polyamide-based separation functional layer is generally a homogeneous membrane having no visible pores and has a desired ion separation ability.
- the separation functional layer is not particularly limited as long as it is a polyamide-based thin film that is difficult to peel off from the polymer porous layer.
- a polyfunctional amine component and a polyfunctional acid halide component are formed on the porous support membrane.
- a polyamide-based separation functional layer obtained by interfacial polymerization is well known.
- Such a polyamide-based separation functional layer is known to have a pleated microstructure, and the thickness of this layer is not particularly limited, but is about 0.05 to 2 ⁇ m, preferably 0.1 to 1 ⁇ m. It is known that if this layer is too thin, film surface defects are likely to occur, and if it is too thick, the transmission performance deteriorates.
- the method for forming the polyamide-based separation functional layer on the surface of the polymer porous layer is not particularly limited, and any known method can be used. Examples of the method include an interfacial polymerization method, a phase separation method, and a thin film coating method. In the present invention, the interfacial polymerization method is particularly preferably used. In the interfacial polymerization method, for example, the polymer porous layer is coated with a polyfunctional amine component-containing amine aqueous solution, and then an organic solution containing a polyfunctional acid halide component is brought into contact with the amine aqueous solution-coated surface to cause interfacial polymerization. This is a method for forming a skin layer.
- the nonwoven fabric layer is not particularly limited as long as it imparts an appropriate mechanical strength while maintaining the separation performance and permeation performance of the composite semipermeable membrane, and a commercially available nonwoven fabric can be used.
- a material made of polyolefin, polyester, cellulose or the like is used, and a material in which a plurality of materials are mixed can also be used.
- polyester in terms of moldability and cost.
- a long fiber nonwoven fabric or a short fiber nonwoven fabric can be used as appropriate, but a long fiber nonwoven fabric can be preferably used from the viewpoint of fine fuzz that causes pinhole defects and uniformity of the film surface.
- the air permeability of the nonwoven fabric layer at this time is not limited to this, but it can be about 0.5 to 10 cm 3 / cm 2 ⁇ s, and 1 to 5 cm 3 / s. Those having a size of about cm 2 ⁇ s are preferably used.
- the polymer porous layer is not particularly limited as long as it can form the polyamide-based separation functional layer, but is usually a microporous layer having a pore diameter of about 0.01 to 0.4 ⁇ m.
- the material for forming the microporous layer may include various materials such as polysulfone, polyarylethersulfone exemplified by polyethersulfone, polyimide, and polyvinylidene fluoride.
- the polymer porous layer can be produced by a method generally called a wet method or a dry wet method.
- a solution preparation step in which polysulfone, a solvent and various additives are dissolved
- a coating step in which the nonwoven fabric is coated with the solution
- a drying step in which the solvent in the solution is evaporated to cause microphase separation, a water bath, etc.
- the polymer porous layer on the nonwoven fabric can be formed through an immobilization step of immobilization by dipping in a coagulation bath.
- the thickness of the polymer porous layer can be set by adjusting the solution concentration and the coating amount after calculating the ratio of impregnation into the nonwoven fabric layer.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Water Supply & Treatment (AREA)
- Nanotechnology (AREA)
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- Hydrology & Water Resources (AREA)
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- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
本発明の透過側流路材は、スパイラル型膜エレメントに用いられるものである。スパイラル型膜エレメントの全体構成については、後に詳述するが、透過側流路材以外の構成については、従来公知のものが何れも採用できる。
本発明の製造方法は、図2~図3に示すように、長尺の樹脂シート30を搬送しつつ、その長手方向に沿う方向に複数列の凸条部31を形成する凸条形成工程と、長尺の樹脂シートを搬送しつつ、その長手方向に沿う方向に複数列の開口32を複数づつ形成する開口形成工程と、を含むものである。本実施形態では、凸条形成工程の後に開口形成工程を行なう例を示すが、両者の順番は逆であってもよい。
本発明のスパイラル型膜エレメントは、図5に示すように、複合半透膜2、供給側流路材6及び透過側流路材3を含む積層体と、その積層体を巻回した有孔の中心管5と、供給側流路と透過側流路との混合を防止する封止部21とを備えており、本発明の透過側流路材3を用いることが特徴である。本実施形態では、複合半透膜2、供給側流路材6及び透過側流路材3を含む複数の分離膜ユニットが、中心管5の回りに巻きつけられている巻回体Rの例を示す。
(1)前述の実施形態では、断面形状が矩形の凸条部31を設ける例を示したが、図4(A)に示すように、断面形状が台形の凸条31部を設けることも可能である。その場合、より簡易な工程で本発明の透過側流路材を製造することが可能である。また、同じ強度でありながら、分離膜との接触面積を低減することができる。
3 透過側流路材
5 中心管
6 供給側流路材
21 封止部
31 凸条部
31a 凸条部(上側)
31b 凸条部(下側)
32 開口
Claims (9)
- 長尺の樹脂シートを搬送しつつ、その長手方向に沿う方向に複数列の凸条部を形成する凸条形成工程と、
長尺の樹脂シートを搬送しつつ、その長手方向に沿う方向に複数列の開口を複数づつ形成する開口形成工程と、
を含むスパイラル型膜エレメント用透過側流路材の製造方法。 - 前記凸条形成工程が、前記樹脂シートの両側に凸条部を形成するものである請求項1記載の製造方法。
- 前記樹脂シートの両側に形成された凸条部が、両側において高さが異なっている請求項2記載の製造方法。
- 前記凸条形成工程の後に、前記凸条部の断面をより矩形に近づける矩形化工程を更に有する請求項1~3いずれかに記載の製造方法。
- 複数列で平行に形成された凸条部と、
その凸条部の間に各々複数形成された開口と、
を有する樹脂シートからなるスパイラル型膜エレメント用透過側流路材。 - 前記凸条部が、前記樹脂シートの両側に形成されたものである請求項5記載の透過側流路材。
- 前記樹脂シートの両側に形成された凸条部が、両側において高さが異なっている請求項6記載の透過側流路材。
- 前記凸条部の断面が矩形である請求項5~7いずれかに記載の透過側流路材。
- 複合半透膜、供給側流路材及び透過側流路材を含む積層体と、その積層体を巻回した有孔の中心管と、供給側流路と透過側流路との混合を防止する封止部とを備えるスパイラル型膜エレメントにおいて、
前記透過側流路材は、請求項5~8のいずれかに記載の透過側流路材であることを特徴とするスパイラル型膜エレメント。
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KR1020177006169A KR102437204B1 (ko) | 2014-11-13 | 2015-11-12 | 스파이럴형 막 엘리먼트용 투과측 유로재, 및 그 제조 방법 |
CN201580056408.3A CN107073399B (zh) | 2014-11-13 | 2015-11-12 | 螺旋型膜元件用透过侧流路部件及其制造方法 |
US15/519,603 US10874993B2 (en) | 2014-11-13 | 2015-11-12 | Permeation side flow path material for spiral membrane element and method for manufacturing same |
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Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2305214A2 (fr) * | 1974-10-09 | 1976-10-22 | Rhone Poulenc Ind | Appareil a membrane semi-permeable |
JPS5279598A (en) * | 1975-10-08 | 1977-07-04 | Baxter Travenol Lab | Embossed membrane support |
JPS61111501U (ja) * | 1984-12-26 | 1986-07-15 | ||
JPS63151304A (ja) * | 1986-12-15 | 1988-06-23 | Kurita Water Ind Ltd | スパイラル型モジユ−ル |
JPH10230145A (ja) * | 1997-02-21 | 1998-09-02 | Nitto Denko Corp | スパイラル型膜エレメント |
JP2000051671A (ja) * | 1998-08-06 | 2000-02-22 | Nitto Denko Corp | スパイラル型分離膜エレメント |
JP2000237554A (ja) * | 1999-02-18 | 2000-09-05 | Nitto Denko Corp | スパイラル型膜エレメント |
JP2006247453A (ja) * | 2005-03-08 | 2006-09-21 | Toray Ind Inc | 液体分離素子、およびそれを用いた逆浸透装置、逆浸透膜処理方法 |
JP2014064973A (ja) * | 2012-09-25 | 2014-04-17 | Toray Ind Inc | 分離膜および分離膜エレメント |
JP2014193460A (ja) * | 2013-02-28 | 2014-10-09 | Toray Ind Inc | 分離膜および分離膜エレメント |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4476022A (en) * | 1983-03-11 | 1984-10-09 | Doll David W | Spirally wrapped reverse osmosis membrane cell |
JPS59195934U (ja) * | 1983-06-10 | 1984-12-26 | 昭和電線電纜株式会社 | 閉鎖母線 |
JPS6019001A (ja) * | 1983-07-14 | 1985-01-31 | Toray Ind Inc | 液体分離装置用流路材及びその製造方法 |
JPS6038003A (ja) * | 1983-08-10 | 1985-02-27 | Toray Ind Inc | 液体分離装置 |
JPS61111501A (ja) | 1984-11-05 | 1986-05-29 | 松下電器産業株式会社 | 電圧非直線抵抗器 |
JPH0771623B2 (ja) * | 1985-09-09 | 1995-08-02 | 株式会社日立製作所 | スパイラル型膜エレメント |
JPH0366008A (ja) | 1989-08-04 | 1991-03-20 | Sharp Corp | 磁気ヘッド |
JPH09141060A (ja) * | 1995-11-21 | 1997-06-03 | Toray Ind Inc | 液体分離素子、装置、及び処理方法 |
JPH10193299A (ja) * | 1996-12-27 | 1998-07-28 | Ricoh Co Ltd | 微細孔形成用型製造方法及び微細孔形成装置 |
DE69927674D1 (de) * | 1999-06-08 | 2006-02-23 | Nitto Denko Corp | Membranmodul zur Trennung von Flüssigkeiten und Verfahren zu seiner Herstellung |
US20080290031A1 (en) * | 2004-10-15 | 2008-11-27 | Pall Corporation | Spacer for Filter Modules |
SE530221C2 (sv) * | 2005-02-28 | 2008-04-01 | Alfa Laval Corp Ab | Spirallindad membranmodul med distanselement för permeat |
US20060219635A1 (en) * | 2005-03-30 | 2006-10-05 | Special Membrane Technologies, Inc. | High-density filtration module |
CN102068908B (zh) | 2006-03-31 | 2013-03-27 | 东丽株式会社 | 液体分离元件、分离膜组件及其应用 |
CN102821837B (zh) * | 2010-03-24 | 2015-07-15 | 陶氏环球技术有限责任公司 | 螺旋卷过滤组件 |
TW201235079A (en) * | 2010-12-28 | 2012-09-01 | Toray Industries | Separation membrane element |
JP2014044912A (ja) * | 2012-08-28 | 2014-03-13 | Sumitomo Chemical Co Ltd | 樹脂シートの製造方法 |
JP5828328B2 (ja) * | 2013-02-20 | 2015-12-02 | 栗田工業株式会社 | 逆浸透膜装置の運転方法、及び逆浸透膜装置 |
JP5791767B2 (ja) * | 2014-07-08 | 2015-10-07 | 株式会社日立製作所 | 逆浸透処理装置 |
-
2014
- 2014-11-13 JP JP2014230586A patent/JP6637232B2/ja not_active Expired - Fee Related
-
2015
- 2015-11-12 CN CN201580056408.3A patent/CN107073399B/zh active Active
- 2015-11-12 US US15/519,603 patent/US10874993B2/en active Active
- 2015-11-12 WO PCT/JP2015/081869 patent/WO2016076397A1/ja active Application Filing
- 2015-11-12 KR KR1020177006169A patent/KR102437204B1/ko active IP Right Grant
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2305214A2 (fr) * | 1974-10-09 | 1976-10-22 | Rhone Poulenc Ind | Appareil a membrane semi-permeable |
JPS5279598A (en) * | 1975-10-08 | 1977-07-04 | Baxter Travenol Lab | Embossed membrane support |
JPS61111501U (ja) * | 1984-12-26 | 1986-07-15 | ||
JPS63151304A (ja) * | 1986-12-15 | 1988-06-23 | Kurita Water Ind Ltd | スパイラル型モジユ−ル |
JPH10230145A (ja) * | 1997-02-21 | 1998-09-02 | Nitto Denko Corp | スパイラル型膜エレメント |
JP2000051671A (ja) * | 1998-08-06 | 2000-02-22 | Nitto Denko Corp | スパイラル型分離膜エレメント |
JP2000237554A (ja) * | 1999-02-18 | 2000-09-05 | Nitto Denko Corp | スパイラル型膜エレメント |
JP2006247453A (ja) * | 2005-03-08 | 2006-09-21 | Toray Ind Inc | 液体分離素子、およびそれを用いた逆浸透装置、逆浸透膜処理方法 |
JP2014064973A (ja) * | 2012-09-25 | 2014-04-17 | Toray Ind Inc | 分離膜および分離膜エレメント |
JP2014193460A (ja) * | 2013-02-28 | 2014-10-09 | Toray Ind Inc | 分離膜および分離膜エレメント |
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KR20170084010A (ko) | 2017-07-19 |
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US10874993B2 (en) | 2020-12-29 |
US20170239626A1 (en) | 2017-08-24 |
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