WO2011016514A1 - Reverse osmosis membrane module and water purification system having same mounted therein - Google Patents

Reverse osmosis membrane module and water purification system having same mounted therein Download PDF

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Publication number
WO2011016514A1
WO2011016514A1 PCT/JP2010/063278 JP2010063278W WO2011016514A1 WO 2011016514 A1 WO2011016514 A1 WO 2011016514A1 JP 2010063278 W JP2010063278 W JP 2010063278W WO 2011016514 A1 WO2011016514 A1 WO 2011016514A1
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WO
WIPO (PCT)
Prior art keywords
reverse osmosis
water
osmosis membrane
side spacer
membrane module
Prior art date
Application number
PCT/JP2010/063278
Other languages
French (fr)
Japanese (ja)
Inventor
壽一 西川
Original Assignee
パナソニック電工株式会社
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Publication date
Application filed by パナソニック電工株式会社 filed Critical パナソニック電工株式会社
Priority to CN2010800350433A priority Critical patent/CN102470326A/en
Publication of WO2011016514A1 publication Critical patent/WO2011016514A1/en

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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C02F1/003—Processes for the treatment of water whereby the filtration technique is of importance using household-type filters for producing potable water, e.g. pitchers, bottles, faucet mounted devices
    • 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
    • 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
    • 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
    • B01D61/10—Accessories; Auxiliary operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
    • B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
    • B01D65/022—Membrane sterilisation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/14—Specific spacers
    • 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
    • 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
    • B01D2321/16—Use of chemical agents
    • B01D2321/168—Use of other chemical agents
    • 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
    • B01D2321/34—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling by radiation
    • B01D2321/343—By UV radiation
    • 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
    • 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
    • C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment

Definitions

  • the present invention relates to a reverse osmosis membrane module and a water purification system incorporating the same.
  • the produced purified water is temporarily stored in a purified water tank, and is taken out from the purified water tank for use.
  • the water purification system is provided with a chemical solution tank for cleaning and disinfecting the reverse osmosis membrane module and the purified water tank, and the microorganisms are disinfected by cleaning and disinfecting the reverse osmosis membrane module with a chemical solution. Is prevented from being blocked by microorganisms.
  • an object of the present invention is to obtain a reverse osmosis membrane module that can easily prevent the reverse osmosis membrane from being blocked by microorganisms and to obtain a water purification system that can be always used.
  • a reverse osmosis membrane formed in a bag shape, a permeated water side spacer disposed inside the reverse osmosis membrane, and a water supply side spacer disposed outside the reverse osmosis membrane
  • a reverse osmosis membrane module for separating the feed water introduced into the water supply side spacer into the permeate water and the concentrated water, wherein the water supply side spacer is blended with an antibacterial and antifungal agent.
  • a reverse osmosis membrane formed in a bag shape, a permeated water side spacer disposed inside the reverse osmosis membrane, and a water feed side spacer disposed outside the reverse osmosis membrane,
  • a reverse osmosis membrane module for separating feed water introduced into a spacer into permeate and concentrated water, wherein the water supply side spacer is formed of a light transmitting member, and the UV light is irradiated to the water supply side spacer Is provided.
  • FIG. 1 is a partially exploded perspective view of a reverse osmosis membrane module according to a first embodiment of the present invention.
  • FIG. 2 is a perspective view showing an assembling procedure of the main part of the reverse osmosis membrane module shown in FIG. 1 in order from (a) to (c).
  • FIG. 3 is a whole block diagram which shows an example of the water purification system in which a reverse osmosis membrane module is integrated.
  • FIG. 4 is a partially exploded perspective view of a reverse osmosis membrane module according to a second embodiment of the present invention.
  • the reverse osmosis membrane module 1 according to this embodiment is incorporated in a water purification system P that produces purified water from raw water, as shown in FIG. 3.
  • the water purification system P used in the present embodiment is mainly used as a device for purifying potable water, and the first pre-filter 2A, the first activated carbon filter 2B and the second pre-filter 2A are used.
  • a pretreatment device 2 comprising a filter 2C, a pump 3 disposed between the first prefilter 2A and the first activated carbon filter 2B, the reverse osmosis membrane module 1, the water purification tank 4, and a second And an activated carbon filter 5.
  • the tap water (raw water) introduced to the water purification system P through the piping Pa is removed by the first prefilter 2A (about 5 um) and then pressurized by the pump 3 to remove the first waste water. It is sent to the activated carbon filter 2B. At this time, residual chlorine is removed, and fine particles are removed by the next second prefilter 2C (about 1 um) to perform pretreatment of the raw water.
  • the feed water whose pretreatment has been completed is supplied from the primary side flow passage 6a of the on-off valve 6 to the water supply port 1a of the reverse osmosis membrane module 1, and the permeated water (clean water) filtered by the reverse osmosis membrane module 1 It is fed from the outlet 1 b to the pipe Pb via the secondary side flow passage 6 b of the on-off valve 6.
  • the piping Pb is branched into a path leading to the water purification tank 4 and a path leading to the second activated carbon filter 5 and the faucet 7, and the purified water treated by the reverse osmosis membrane module 1 is supplied to the water purification tank 4
  • the water is supplied from the faucet 7 through the second activated carbon filter 5.
  • the concentrated water which has not been filtered by the reverse osmosis membrane module 1 is discharged from the concentrated water discharge port 1 c through the pipe Pc.
  • the pressure switch 8 is provided in the pipe Pb
  • the check valve 9 is provided in the secondary side flow passage 6b of the on-off valve 6, and the throttling valve 10 is provided in the pipe Pc.
  • the pressure switch 8 detects and the pump 3 stops.
  • the secondary flow passage 6b of the on-off valve 6 is maintained at high pressure by the check valve 9, but the water pressure of the primary flow passage 6a is discharged to the piping Pc for discharging concentrated water.
  • the water pressure gradually decreases because When the pressure difference between the secondary flow passage 6b of the on-off valve 6 and the primary flow passage 6a reaches a predetermined value, the valve provided inside the on-off valve 6 is pushed by the pressure of the secondary flow passage 6b. And the primary side flow path 6a is shut off.
  • the faucet 7 when the faucet 7 is opened, the water stored in the purified water tank 4 is supplied, whereby the water pressure in the secondary side flow passage 6b of the on-off valve 6 and the piping Pb drops, and the pressure is constant.
  • the pressure switch 8 detects this and the pump 3 operates.
  • the on-off valve 6 opens the one flow passage 6a, and the feed water passing through the pretreatment device 2 is supplied to the water supply port 1a of the reverse osmosis membrane module 1.
  • the purified water discharged from the permeated water discharge port 1b is supplied from the faucet 7 through the secondary flow passage 6b and the pipe Pb.
  • the reverse osmosis membrane module 1 is configured as shown in FIG. That is, the reverse osmosis membrane module 1 is configured to filter water by the reverse osmosis membrane 11, and as this reverse osmosis membrane 11, NF known as RO membrane (Reverse Osmosis Membrane) or nano filter generally known A membrane (Nanofiltration Membrane) etc. can be used.
  • the reverse osmosis membrane 11 may be any membrane as long as it has a property of permeating water and impermeable to impurities other than water such as ions and salts, and is not limited to the RO membrane and the NF membrane.
  • the reverse osmosis membrane module 1 is used in a state in which the reverse osmosis membrane 11 is wound.
  • the reverse osmosis membrane 11 is formed in a bag shape in which only the center side to be wound is opened, and the reticulated permeate water side spacer 12 is inside the reverse osmosis membrane 11 in a bag shape.
  • a mesh-like water supply side spacer 13 is arranged outside the reverse osmosis membrane 11 in the bag-like shape.
  • the reverse osmosis membrane 11 is adhesively fixed to the water collection pipe 14 such that the open end of the reverse osmosis membrane 11 communicates with the inside of the water collection pipe 14 disposed at the center.
  • the reverse osmosis membrane 11, the permeated water side spacer 12 and the water supply side spacer 13 are alternately stacked.
  • the entire outermost periphery of the reverse osmosis membrane 11 in which the permeated water side spacer 12 and the water supply side spacer 13 are disposed is wound around the water collecting pipe 14, and the waterproof membrane 15 covers the entire outer periphery.
  • FIGS. 2 (a) to 2 (c) show the process of winding the reverse osmosis membrane 11, the permeated water side spacer 12 and the water supply side spacer 13 around the water collecting pipe.
  • a slit 14a for inserting the open side of the reverse osmosis membrane 11 formed in a bag shape is formed in the axial direction of the water collection tube 14 on the outer periphery of the water collection tube 14.
  • the open side edge part of the reverse osmosis membrane 11 and the permeated water side spacer 12 which were pressed is inserted in the slit 14a, and it adhere
  • the water supply side spacer 13 is attached to the outside of the bag-like reverse osmosis membrane 11, and these are wound around the water collection pipe 14. Thereafter, the outermost periphery is covered in a watertight manner with the waterproof film 15 (see FIG. 1) described above.
  • the reverse osmosis membrane 11, the permeated water side spacer 12, and the water supply side spacer 13 are shown in FIG. 2, a plurality of sets may be provided and wound as shown in FIG.
  • the first lid 16 is formed with a closed portion 16a at the central portion that closes the one end of the water collection pipe 14, and the supply ports 1a are radially formed around the closed portion 16a.
  • the supply ports 1a are radially formed around the closed portion 16a.
  • the second lid 17 is formed with a permeated water discharge port 1b communicating with the other end of the water collection pipe 14 at the central portion, and a concentrated water discharge port 1c is formed radially around the permeated water discharge port 1b. ing. As described above, by radially forming the concentrated water discharge port 1 c, the entire circumference of the other end side of the water supply side spacer 13 is communicated with the concentrated water discharge port 1 c.
  • the function of the reverse osmosis membrane module 1 thus configured is as follows.
  • the feed water pretreated by the pretreatment device 2 is introduced from the feed port 1a, the feed water is supplied to the entire periphery on one end side of the feed water side spacer 13 with a constant pressure, and then the water feed side spacer 13 And move in the direction of the concentrated water outlet 1c. While the feed water moves along the feed water side spacer 13, the water excluding the impurities in the feed water permeates the reverse osmosis membrane 11. Then, the permeated water (clean water) that has permeated the reverse osmosis membrane 11 is collected in the water collecting pipe 14 along the permeated water side spacer 12 in the bag-shaped reverse osmosis membrane 11 and moves inside the water collecting pipe 14 It is discharged from the permeated water discharge port 1b.
  • the concentrated water containing the impurities which did not permeate the reverse osmosis membrane 11 is discharged from the concentrated water discharge port 1 c along the water supply side spacer 13.
  • the permeated water side spacer 12 and the water supply side spacer 13 are provided in order to form a clearance gap between the wound reverse osmosis membranes 11, and to ensure a flow path.
  • an antibacterial and antifungal agent is blended in the water supply side spacer 13 into which the supply water is introduced from the supply port 1a.
  • the water supply side spacer 13 is made of a material such as polyester or polypropylene into which an antibacterial metal such as silver or copper or an antifungal agent (TBZ) is kneaded (a material containing an antibacterial / antifungal agent) Are formed in a net shape.
  • the water permeable spacer 12 is formed in a net shape of a material such as polyester which does not contain an antibacterial and antifungal agent.
  • the faucet 7 is closed and the water flow in the path of the water purification system P stagnates, and the water supply side spacer 13 is kneaded
  • the incorporated antibacterial and antifungal agent is eluted in the water remaining in the arrangement of the water supply side spacer 13.
  • the antibacterial / antifungal agent is compounded in the reticulated water supply side spacer 13 disposed outside the bag-like reverse osmosis membrane 11 ing. Therefore, when the water stagnates in the reverse osmosis membrane module 1, that is, when the faucet 7 is closed, the antibacterial and antifungal agent compounded in the water supply side spacer 13 remains in the water remaining in the arrangement of the water supply side spacer 13. Elute. And while it is suppressed that microorganisms proliferate by the water supply side spacer 13 by the eluted antibacterial and antifungal agent, the microbe which propagated by the water supply side spacer 13 can be bacterized. Therefore, it can be easily suppressed that the reverse osmosis membrane 11 is blocked by the microorganism.
  • the antifungal agent does not permeate the reverse osmosis membrane 11, it is possible to prevent the antifungal agent from being mixed in the purified water. As a result, even immediately after water supply, since it can be used immediately without draining water, waste of water can be prevented.
  • the permeated water side spacer 12 is disposed inside the reverse osmosis membrane 11, and the water supply side spacer 13 is disposed outside the reverse osmosis membrane 11, and the reverse osmosis membrane 11 is formed into a bag shape. While being fixed so as to communicate the inside of the water collection pipe 14 with the open side end of the water collection pipe 14, it is wound around the water collection pipe 14, and the outermost periphery is covered watertight with a waterproof membrane 15.
  • the reverse osmosis membrane module is attached by attaching the first lid 16 having the supply port 1a formed thereon and the second lid 17 having the permeated water outlet 1b and the concentrated water outlet 1c formed at the other end. Form one. Therefore, the reverse osmosis membrane module 1 can be made cylindrical, and can be easily incorporated into the water purification system P.
  • the reverse osmosis membrane module 1 according to the present embodiment is incorporated into the water purification system P, there is no need to wash the reverse osmosis membrane module 1 using a chemical solution or the like, and a water purification system P that can be always used can be obtained. it can.
  • the antibacterial agent is not conventionally used for the spacer by the side of water supply, the main reason is that the aromatic polyamide of a synthetic membrane is generally used as a material of a reverse osmosis membrane.
  • This aromatic polyamide is weak to a high concentration of chlorine compounds and oxidizing agents, which may cause material deterioration.
  • a reverse osmosis membrane is generally used for industrial use in many cases, it can also be mentioned as a factor that it is cheaper to periodically wash it than the cost of blending an antibacterial agent into a spacer.
  • the antibacterial and antifungal agent it is preferable to use a silver-based antibacterial agent and an antifungal agent (TBZ) which are non-oxidative and act at a relatively low concentration, and by containing them in the water supply side spacer 13, It is possible to suppress the performance decrease due to the blockage of the reverse osmosis membrane 11 due to bacterial reproduction while making maintenance of the drug cleaning unnecessary.
  • the water purification system can be used not only as a household water purification system P but also as an industrial water purification system.
  • the reverse osmosis membrane module 1A is basically formed into a bag shape and wound, similarly to the reverse osmosis membrane module 1 of the first embodiment. 11; a mesh-like permeated water side spacer 12 disposed inside the bag-shaped reverse osmosis membrane 11; a mesh-like water supply spacer 13 disposed outside the bag-shaped reverse osmosis membrane 11; have.
  • the present embodiment is mainly different from the first embodiment in that the water supply side spacer 13 is formed of a translucent member, and the water supply side spacer 13 is provided with a UV lamp 20 for irradiating ultraviolet light. It is in. Furthermore, in the present embodiment, an optical fiber is used as the light transmitting member.
  • the UV lamp 20 is disposed such that ultraviolet light is irradiated to the water supply side spacer 13 formed of an optical fiber.
  • one or more UV lamps 20 are provided so as to be in contact with the wound water-supply-side spacers 13, and the UV lamps 20 are wound together with the water-supply-side spacers 13 to supply water formed by optical fibers with ultraviolet light. It arranges so that side spacer 13 may be irradiated.
  • the terminals 20a and 20b of the UV lamp 20 are projected from the water supply port 1a of the first lid 16, and the terminals 20a and 20b and the respective UV lamps 20 are electrically connected. There is.
  • the UV lamps 20 are arranged to be in contact with the wound water-supply-side spacers 13, and the water-supply-side spacers 13 are formed of an optical fiber which is a translucent member. Can be widely distributed through the optical fiber of the wound water supply side spacer 13.
  • the mesh-like water supply side spacer 13 disposed outside the bag-like reverse osmosis membrane 11 is formed of a light transmitting member, and UV is irradiated to the water supply side spacer 13 A lamp 20 is provided.
  • the ultraviolet light emitted from the UV lamp 20 spreads over the wide area of the water supply side spacer 13 through the optical fiber (light transmitting member) of the water supply side spacer 13.
  • the microbes propagated by the water supply side spacer 13 can be bacterized by ultraviolet light, and the reproduction of microbes in the water supply side spacer 13 formed outside the bag-like reverse osmosis membrane 11 can be suppressed. Therefore, it can be easily suppressed that the reverse osmosis membrane 11 is blocked by the microorganism.
  • permeability of the ultraviolet-ray irradiated from the UV lamp 20 can be raised by using an optical fiber as a translucent member. Therefore, ultraviolet rays can be spread over a wider range of the water supply side spacer 13, and the bacteriostatic efficiency of the water supply side spacer 13 can be further enhanced.
  • a reverse osmosis membrane module capable of preventing the reverse osmosis membrane from being blocked by microorganisms, and to obtain a water purification system that can be always used.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Organic Chemistry (AREA)
  • Nanotechnology (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Physical Water Treatments (AREA)
  • Water Treatment By Sorption (AREA)

Abstract

A reverse osmosis membrane module (1) provided with: a reverse osmosis membrane (11) formed in a bag shape; a permeated-water-side spacer (12) disposed on the inside of the reverse osmosis membrane (11); and a supplied-water-side spacer (13) disposed on the outside of the reverse osmosis membrane (11). An antibacterial and antifungal agent is blended in the supplied-water-side spacer (13) of the reverse osmosis membrane module (1), and as a result, when a faucet (7) is closed, the antibacterial and antifungal agent blended in the supplied-water-side spacer (13) is eluted into water which remains in the place in which the supplied-water-side spacer (13) is disposed.

Description

逆浸透膜モジュールおよびこれを組み込んだ浄水システムReverse osmosis membrane module and water purification system incorporating the same
　本発明は、逆浸透膜モジュールおよびこれを組み込んだ浄水システムに関する。 The present invention relates to a reverse osmosis membrane module and a water purification system incorporating the same.
　従来、浄水システムとして、原水タンクから送られる原水中の残留塩素を活性炭フィルタで除去した後、軟水化手段によって軟水化し、軟水化した原水を逆浸透膜モジュールで濾過して精製水を作り出したものが知られている（たとえば、特許文献１参照）。 Conventionally, as a water purification system, residual chlorine in raw water sent from a raw water tank is removed with an activated carbon filter, then softened by a water softening means, and the softened raw water is filtered by a reverse osmosis membrane module to create purified water Are known (see, for example, Patent Document 1).
　この特許文献１の浄水システムでは、作り出された精製水を精製水タンクに一旦貯留して、精製水タンクから取り出して使用するようになっている。 In the water purification system of Patent Document 1, the produced purified water is temporarily stored in a purified water tank, and is taken out from the purified water tank for use.
　さらに、特許文献１では、浄水システムに、逆浸透膜モジュールおよび精製水タンクを洗浄・消毒する薬液タンクを設け、薬液により逆浸透膜モジュールを洗浄・消毒することで微生物を殺菌し、逆浸透膜が微生物によって閉塞されてしまうのを抑制している。 Furthermore, in Patent Document 1, the water purification system is provided with a chemical solution tank for cleaning and disinfecting the reverse osmosis membrane module and the purified water tank, and the microorganisms are disinfected by cleaning and disinfecting the reverse osmosis membrane module with a chemical solution. Is prevented from being blocked by microorganisms.
特開２００４－８９５８号公報JP 2004-8958 A
　しかしながら、かかる従来の浄水システムにあっては、薬液を使用した後に配管内を洗浄する必要があり、洗浄作業に多くの手間が掛かってしまう。また、薬液の使用時および使用後の洗浄時には浄水システムを休止する必要があるため、常時使用することができないという問題があった。 However, in such a conventional water purification system, it is necessary to clean the inside of the pipe after using the chemical solution, and it takes a lot of labor for the cleaning operation. Moreover, since it is necessary to stop a water purification system at the time of the washing | cleaning at the time of use and after use of a chemical | medical solution, there existed a problem that it could not always use.
　そこで、本発明は、逆浸透膜が微生物によって閉塞されるのを容易に抑制することのできる逆浸透膜モジュールを得るとともに常時使用することのできる浄水システムを得ることを目的とする。 Then, an object of the present invention is to obtain a reverse osmosis membrane module that can easily prevent the reverse osmosis membrane from being blocked by microorganisms and to obtain a water purification system that can be always used.
　本発明にあっては、袋状に形成された逆浸透膜と、当該逆浸透膜の内側に配置される透過水側スペーサと、前記逆浸透膜の外側に配置される給水側スペーサと、を有し、給水側スペーサに導入された供給水を透過水と濃縮水とに分離する逆浸透膜モジュールであって、前記給水側スペーサに、抗菌・抗カビ剤を配合したことを特徴とする。 In the present invention, a reverse osmosis membrane formed in a bag shape, a permeated water side spacer disposed inside the reverse osmosis membrane, and a water supply side spacer disposed outside the reverse osmosis membrane And a reverse osmosis membrane module for separating the feed water introduced into the water supply side spacer into the permeate water and the concentrated water, wherein the water supply side spacer is blended with an antibacterial and antifungal agent.
　また、袋状に形成された逆浸透膜と、当該逆浸透膜の内側に配置される透過水側スペーサと、前記逆浸透膜の外側に配置される給水側スペーサと、を有し、給水側スペーサに導入された供給水を透過水と濃縮水とに分離する逆浸透膜モジュールであって、前記給水側スペーサを透光性部材で形成するとともに、当該給水側スペーサに紫外線を照射するＵＶランプを設けたことを特徴とする。 Moreover, it has a reverse osmosis membrane formed in a bag shape, a permeated water side spacer disposed inside the reverse osmosis membrane, and a water feed side spacer disposed outside the reverse osmosis membrane, A reverse osmosis membrane module for separating feed water introduced into a spacer into permeate and concentrated water, wherein the water supply side spacer is formed of a light transmitting member, and the UV light is irradiated to the water supply side spacer Is provided.
　本発明によれば、逆浸透膜が微生物により閉塞されてしまうのを容易に抑制することができる。 ADVANTAGE OF THE INVENTION According to this invention, it can suppress easily that a reverse osmosis membrane is obstruct | occluded by microorganisms.
図１は、本発明の第１実施形態にかかる逆浸透膜モジュールの一部を破断して展開した斜視図である。FIG. 1 is a partially exploded perspective view of a reverse osmosis membrane module according to a first embodiment of the present invention. 図２は、図１に示す逆浸透膜モジュールの要部の組み立て手順を（ａ）～（ｃ）に順を追って示す斜視図である。FIG. 2 is a perspective view showing an assembling procedure of the main part of the reverse osmosis membrane module shown in FIG. 1 in order from (a) to (c). 図３は、逆浸透膜モジュールが組み込まれる浄水システムの一例を示す全体構成図である。FIG. 3: is a whole block diagram which shows an example of the water purification system in which a reverse osmosis membrane module is integrated. 図４は、本発明の第２実施形態にかかる逆浸透膜モジュールの一部を破断して展開した斜視図である。FIG. 4 is a partially exploded perspective view of a reverse osmosis membrane module according to a second embodiment of the present invention.
　以下、本発明の実施形態について図面を参照しながら詳細に説明する。なお、以下の複数の実施形態には、同様の構成要素が含まれている。よって、以下では、それら同様の構成要素には共通の符号を付与するとともに、重複する説明を省略する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, the same component is contained in several following embodiments. Therefore, in the following, those similar components are given the same reference numerals, and redundant explanations are omitted.
　（第１実施形態）
　本実施形態にかかる逆浸透膜モジュール１は、図３に示すように、原水から浄水を作り出す浄水システムＰに組み込まれている。 First Embodiment
The reverse osmosis membrane module 1 according to this embodiment is incorporated in a water purification system P that produces purified water from raw water, as shown in FIG. 3.
　具体的には、本実施形態で用いる浄水システムＰは、主として家庭用の飲料水を浄化する装置として用いられるものであり、第１のプレフィルタ２Ａ、第１の活性炭フィルタ２Ｂおよび第２のプレフィルタ２Ｃからなる前処理装置２と、第１のプレフィルタ２Ａと第１の活性炭フィルタ２Ｂとの間に配置されるポンプ３と、前記逆浸透膜モジュール１と、浄水タンク４と、第２の活性炭フィルタ５と、を備えている。 Specifically, the water purification system P used in the present embodiment is mainly used as a device for purifying potable water, and the first pre-filter 2A, the first activated carbon filter 2B and the second pre-filter 2A are used. A pretreatment device 2 comprising a filter 2C, a pump 3 disposed between the first prefilter 2A and the first activated carbon filter 2B, the reverse osmosis membrane module 1, the water purification tank 4, and a second And an activated carbon filter 5.
　そして、配管Ｐａを介して浄水システムＰに導入される水道水（原水）は、第１のプレフィルタ２Ａ（約５ｕｍ）で粗ゴミが除去された後、ポンプ３で加圧されて第１の活性炭フィルタ２Ｂに送られる。ここで残留塩素が除去されるとともに、次の第２のプレフィルタ２Ｃ（約１ｕｍ）で微粒子が除去されて原水の前処理が行われる。 Then, the tap water (raw water) introduced to the water purification system P through the piping Pa is removed by the first prefilter 2A (about 5 um) and then pressurized by the pump 3 to remove the first waste water. It is sent to the activated carbon filter 2B. At this time, residual chlorine is removed, and fine particles are removed by the next second prefilter 2C (about 1 um) to perform pretreatment of the raw water.
　前処理が完了した供給水は、開閉弁６の一次側流路６ａから逆浸透膜モジュール１の給水口１ａに供給され、逆浸透膜モジュール１で濾過された透過水（浄水）は透過水吐出口１ｂから開閉弁６の二次側流路６ｂを介して配管Ｐｂに送給される。配管Ｐｂは、浄水タンク４に通ずる経路と、第２の活性炭フィルタ５および蛇口７に通ずる経路と、に分岐しており、逆浸透膜モジュール１で処理された浄水は、浄水タンク４に給水されるとともに第２の活性炭フィルタ５を通過して蛇口７から給水されるようになっている。一方、逆浸透膜モジュール１で濾過されなかった濃縮水は、濃縮水吐出口１ｃから配管Ｐｃを介して排出される。 The feed water whose pretreatment has been completed is supplied from the primary side flow passage 6a of the on-off valve 6 to the water supply port 1a of the reverse osmosis membrane module 1, and the permeated water (clean water) filtered by the reverse osmosis membrane module 1 It is fed from the outlet 1 b to the pipe Pb via the secondary side flow passage 6 b of the on-off valve 6. The piping Pb is branched into a path leading to the water purification tank 4 and a path leading to the second activated carbon filter 5 and the faucet 7, and the purified water treated by the reverse osmosis membrane module 1 is supplied to the water purification tank 4 The water is supplied from the faucet 7 through the second activated carbon filter 5. On the other hand, the concentrated water which has not been filtered by the reverse osmosis membrane module 1 is discharged from the concentrated water discharge port 1 c through the pipe Pc.
　また、配管Ｐｂには圧力スイッチ８が設けられると共に、開閉弁６の二次側流路６ｂに逆止弁９が設けられており、配管Ｐｃには絞り弁１０が設けられている。 Further, the pressure switch 8 is provided in the pipe Pb, the check valve 9 is provided in the secondary side flow passage 6b of the on-off valve 6, and the throttling valve 10 is provided in the pipe Pc.
　そして、かかる構成とすることで浄水システムＰは以下のように動作する。 And the water purification system P operate | moves as follows by setting it as this structure.
　まず、蛇口７を閉めると、配管Ｐｂ内の浄水が浄水タンク４に給水されると同時に経路内の水圧が上昇し、一定の水圧に達すると圧力スイッチ８が検知してポンプ３が停止する。このようにポンプ３が停止すると、開閉弁６の二次側流路６ｂは逆止弁９により高圧が保持されるが、一次側流路６ａの水圧は濃縮水を排出する配管Ｐｃへと排出されるため水圧が徐々に低下する。そして、開閉弁６の二次側流路６ｂと一次側流路６ａとの圧力差が所定値に達すると、開閉弁６の内部に設けられた弁が二次側流路６ｂの圧力で押されて一次側流路６ａを遮断する。 First, when the faucet 7 is closed, the clean water in the piping Pb is supplied to the clean water tank 4 and the water pressure in the path rises at the same time, and when the constant water pressure is reached, the pressure switch 8 detects and the pump 3 stops. As described above, when the pump 3 is stopped, the secondary flow passage 6b of the on-off valve 6 is maintained at high pressure by the check valve 9, but the water pressure of the primary flow passage 6a is discharged to the piping Pc for discharging concentrated water. The water pressure gradually decreases because When the pressure difference between the secondary flow passage 6b of the on-off valve 6 and the primary flow passage 6a reaches a predetermined value, the valve provided inside the on-off valve 6 is pushed by the pressure of the secondary flow passage 6b. And the primary side flow path 6a is shut off.
　次に、蛇口７を開けると、浄水タンク４内に溜められた水が供給されることにより、開閉弁６の二次側流路６ｂおよび配管Ｐｂ内の水圧が下降し、その圧力が一定の水圧よりも下がると圧力スイッチ８がこれを検知してポンプ３が作動する。また、二次側流路６ｂの圧力が低下することにより、開閉弁６が一側流路６ａを開き、前処理装置２を経由した供給水が逆浸透膜モジュール１の給水口１ａに供給され、透過水吐出口１ｂから吐出される浄水が二次側流路６ｂおよび配管Ｐｂを介して蛇口７から給水される。このように、蛇口７を開・閉することでポンプ３が作動・停止するように浄水システムＰを構成することで、浄水システムＰが常に浄水供給可能な態勢となるようにしている。 Next, when the faucet 7 is opened, the water stored in the purified water tank 4 is supplied, whereby the water pressure in the secondary side flow passage 6b of the on-off valve 6 and the piping Pb drops, and the pressure is constant. When the pressure drops below the water pressure, the pressure switch 8 detects this and the pump 3 operates. In addition, when the pressure of the secondary flow passage 6b decreases, the on-off valve 6 opens the one flow passage 6a, and the feed water passing through the pretreatment device 2 is supplied to the water supply port 1a of the reverse osmosis membrane module 1. The purified water discharged from the permeated water discharge port 1b is supplied from the faucet 7 through the secondary flow passage 6b and the pipe Pb. Thus, by configuring the water purification system P so that the pump 3 operates and stops by opening and closing the faucet 7, the water purification system P is always in a state where it can supply clean water.
　ここで、逆浸透膜モジュール１は、図１に示すように構成されている。すなわち、逆浸透膜モジュール１は、逆浸透膜１１によって水を濾過するようになっており、この逆浸透膜１１としては、一般に知られるＲＯ膜（Reverse Osmosis Menbrane）やナノフィルターと称されるＮＦ膜（Nanofiltration Membrane）などを用いることができる。なお、逆浸透膜１１は、水を透過しイオンや塩類などの水以外の不純物を透過しない性質を有する膜であればよく、ＲＯ膜、ＮＦ膜に限られるものではない。 Here, the reverse osmosis membrane module 1 is configured as shown in FIG. That is, the reverse osmosis membrane module 1 is configured to filter water by the reverse osmosis membrane 11, and as this reverse osmosis membrane 11, NF known as RO membrane (Reverse Osmosis Membrane) or nano filter generally known A membrane (Nanofiltration Membrane) etc. can be used. The reverse osmosis membrane 11 may be any membrane as long as it has a property of permeating water and impermeable to impurities other than water such as ions and salts, and is not limited to the RO membrane and the NF membrane.
　本実施形態では、逆浸透膜モジュール１は、逆浸透膜１１を巻回した状態で用いられるようになっている。具体的には、逆浸透膜１１は、巻回される中心側のみが開放される袋状に形成されており、袋状となった逆浸透膜１１の内側に網状の透過水側スペーサ１２が配置されるとともに、袋状となった逆浸透膜１１の外側に網状の給水側スペーサ１３が配置されている。そして、逆浸透膜１１は、当該逆浸透膜１１の開放側端部が中心に配置した集水管１４の内部と連通するように、当該集水管１４に接着固定されている。このとき、図１に示すように、逆浸透膜１１、透過水側スペーサ１２および給水側スペーサ１３は、それらが交互に積層されるようになっている。 In the present embodiment, the reverse osmosis membrane module 1 is used in a state in which the reverse osmosis membrane 11 is wound. Specifically, the reverse osmosis membrane 11 is formed in a bag shape in which only the center side to be wound is opened, and the reticulated permeate water side spacer 12 is inside the reverse osmosis membrane 11 in a bag shape. A mesh-like water supply side spacer 13 is arranged outside the reverse osmosis membrane 11 in the bag-like shape. The reverse osmosis membrane 11 is adhesively fixed to the water collection pipe 14 such that the open end of the reverse osmosis membrane 11 communicates with the inside of the water collection pipe 14 disposed at the center. At this time, as shown in FIG. 1, the reverse osmosis membrane 11, the permeated water side spacer 12 and the water supply side spacer 13 are alternately stacked.
　そして、透過水側スペーサ１２および給水側スペーサ１３を配置した逆浸透膜１１を集水管１４に巻き付けた全体の最外周を防水性の膜１５によって水密に被覆している。 Then, the entire outermost periphery of the reverse osmosis membrane 11 in which the permeated water side spacer 12 and the water supply side spacer 13 are disposed is wound around the water collecting pipe 14, and the waterproof membrane 15 covers the entire outer periphery.
　ここで、図２に基づいて、逆浸透膜モジュール１の製造方法の概略を説明する。図２（ａ）～（ｃ）は、逆浸透膜１１、透過水側スペーサ１２および給水側スペーサ１３を集水管１４の周りに巻き付ける工程を示している。 Here, based on FIG. 2, the outline of the manufacturing method of the reverse osmosis membrane module 1 is demonstrated. FIGS. 2 (a) to 2 (c) show the process of winding the reverse osmosis membrane 11, the permeated water side spacer 12 and the water supply side spacer 13 around the water collecting pipe.
　まず、図２（ａ）に示すように、帯状に形成した２枚の逆浸透膜１１の間に透過水側スペーサ１２を挟んだ状態で、２枚の逆浸透膜１１の集水管１４側を除いた３辺の周縁部どうしを接着剤Ａで袋状に貼り合わせる。そして、図２（ｂ）に示すように、２枚の逆浸透膜１１および透過水側スペーサ１２をプレスする。 First, as shown in FIG. 2A, with the permeate water side spacer 12 sandwiched between two reverse osmosis membranes 11 formed in a strip, the water collecting pipe 14 side of the two reverse osmosis membranes 11 is The peripheral portions of the removed three sides are pasted together with adhesive A in the form of a bag. And as shown in FIG.2 (b), the reverse osmosis membrane 11 of 2 sheets, and the permeated water side spacer 12 are pressed.
　一方、図２（ａ）に示すように、集水管１４の外周には、袋状に形成した逆浸透膜１１の開放側を挿入するスリット１４ａを集水管１４の軸方向に形成しておく。そして、図２（ｂ）に示すように、プレスした逆浸透膜１１および透過水側スペーサ１２の開放側端部をスリット１４ａに嵌め込んで接着する。 On the other hand, as shown in FIG. 2A, a slit 14a for inserting the open side of the reverse osmosis membrane 11 formed in a bag shape is formed in the axial direction of the water collection tube 14 on the outer periphery of the water collection tube 14. And as shown in FIG.2 (b), the open side edge part of the reverse osmosis membrane 11 and the permeated water side spacer 12 which were pressed is inserted in the slit 14a, and it adhere | attaches.
　そして、図２（ｃ）に示すように、袋状となった逆浸透膜１１の外側に給水側スペーサ１３を添えて、これらを集水管１４の周りに巻き付ける。その後、上述した防水性の膜１５（図１参照）で最外周を水密に被覆する。なお、図２では、１組の逆浸透膜１１、透過水側スペーサ１２および給水側スペーサ１３を示したが、図１に示すように、それらを複数組設けて巻き付けるようにしてもよい。 Then, as shown in FIG. 2C, the water supply side spacer 13 is attached to the outside of the bag-like reverse osmosis membrane 11, and these are wound around the water collection pipe 14. Thereafter, the outermost periphery is covered in a watertight manner with the waterproof film 15 (see FIG. 1) described above. Although one set of the reverse osmosis membrane 11, the permeated water side spacer 12, and the water supply side spacer 13 are shown in FIG. 2, a plurality of sets may be provided and wound as shown in FIG.
　このように、逆浸透膜１１、透過水側スペーサ１２および給水側スペーサ１３を巻回して防水性の膜１５で被覆することで、逆浸透膜モジュール１は、図１に示すように、全体として集水管１４を中心とする円柱状に形成される。 Thus, by winding the reverse osmosis membrane 11, the permeated water side spacer 12 and the water supply side spacer 13 and covering them with the waterproof membrane 15, as shown in FIG. It is formed in a cylindrical shape centering on the water collection pipe 14.
　そして、集水管１４の一端（図１中手前側）には、供給口１ａを形成した第１の蓋体１６が取り付けられるとともに、他端（図１中奥側）には、透過水吐出口１ｂおよび濃縮水吐出口１ｃを形成した第２の蓋体１７が取り付けられる。 And while the 1st lid 16 which formed the supply port 1a is attached to one end (the near side in FIG. 1) of the water collection pipe 14, a permeated water discharge port is attached to the other end (the back side in FIG. 1). The 2nd lid 17 which formed 1b and concentrated water discharge mouth 1c is attached.
　第１の蓋体１６は、中心部に集水管１４の一端を閉塞する閉塞部１６ａが形成されるとともに、供給口１ａが閉塞部１６ａを中心として放射状に形成されている。このように、供給口１ａを放射状に形成することで、給水側スペーサ１３の一端側の全周が供給口１ａに連通されるようにしている。 The first lid 16 is formed with a closed portion 16a at the central portion that closes the one end of the water collection pipe 14, and the supply ports 1a are radially formed around the closed portion 16a. Thus, by radially forming the supply ports 1a, the entire circumference of one end side of the water supply side spacer 13 is communicated with the supply ports 1a.
　第２の蓋体１７は、中心部に集水管１４の他端に連通する透過水吐出口１ｂが形成されるとともに、その透過水吐出口１ｂを中心として濃縮水吐出口１ｃが放射状に形成されている。このように、濃縮水吐出口１ｃを放射状に形成することで、給水側スペーサ１３の他端側の全周が濃縮水吐出口１ｃに連通されるようにしている。 The second lid 17 is formed with a permeated water discharge port 1b communicating with the other end of the water collection pipe 14 at the central portion, and a concentrated water discharge port 1c is formed radially around the permeated water discharge port 1b. ing. As described above, by radially forming the concentrated water discharge port 1 c, the entire circumference of the other end side of the water supply side spacer 13 is communicated with the concentrated water discharge port 1 c.
　かかる構成とした逆浸透膜モジュール１の機能は、以下のとおりである。 The function of the reverse osmosis membrane module 1 thus configured is as follows.
　まず、前処理装置２で前処理された供給水が供給口１ａから導入されると、当該供給水は一定の圧力をもって給水側スペーサ１３の一端側全周に供給された後、給水側スペーサ１３を伝って濃縮水吐出口１ｃ方向へと移動する。この給水側スペーサ１３を伝って供給水が移動する間に、供給水中の不純物を除く水が逆浸透膜１１を透過する。すると、逆浸透膜１１を透過した透過水（浄水）は袋状となった逆浸透膜１１内の透過水側スペーサ１２を伝って集水管１４内に集められ、集水管１４の内側を移動して透過水吐出口１ｂから吐出される。一方、逆浸透膜１１を透過しなかった不純物を含む濃縮水は、給水側スペーサ１３を伝って濃縮水吐出口１ｃから排出される。なお、透過水側スペーサ１２および給水側スペーサ１３は、巻回された逆浸透膜１１間に隙間を形成して流路を確保するために設けるものである。 First, when the feed water pretreated by the pretreatment device 2 is introduced from the feed port 1a, the feed water is supplied to the entire periphery on one end side of the feed water side spacer 13 with a constant pressure, and then the water feed side spacer 13 And move in the direction of the concentrated water outlet 1c. While the feed water moves along the feed water side spacer 13, the water excluding the impurities in the feed water permeates the reverse osmosis membrane 11. Then, the permeated water (clean water) that has permeated the reverse osmosis membrane 11 is collected in the water collecting pipe 14 along the permeated water side spacer 12 in the bag-shaped reverse osmosis membrane 11 and moves inside the water collecting pipe 14 It is discharged from the permeated water discharge port 1b. On the other hand, the concentrated water containing the impurities which did not permeate the reverse osmosis membrane 11 is discharged from the concentrated water discharge port 1 c along the water supply side spacer 13. In addition, the permeated water side spacer 12 and the water supply side spacer 13 are provided in order to form a clearance gap between the wound reverse osmosis membranes 11, and to ensure a flow path.
　ここで、本実施形態では、供給口１ａから供給水が導入される給水側スペーサ１３に、抗菌・抗カビ剤を配合している。具体的には、給水側スペーサ１３は、銀や銅などの抗菌性金属、または、抗カビ剤（ＴＢＺ）を練り込んだポリエステル、ポリプロピレンなどの材料（抗菌・抗カビ剤が配合された材料）を用いて、網状に形成されている。一方、透水側スペーサ１２は、抗菌・抗カビ剤を含有しないポリエステルなどの材料で網状に形成されている。 Here, in the present embodiment, an antibacterial and antifungal agent is blended in the water supply side spacer 13 into which the supply water is introduced from the supply port 1a. Specifically, the water supply side spacer 13 is made of a material such as polyester or polypropylene into which an antibacterial metal such as silver or copper or an antifungal agent (TBZ) is kneaded (a material containing an antibacterial / antifungal agent) Are formed in a net shape. On the other hand, the water permeable spacer 12 is formed in a net shape of a material such as polyester which does not contain an antibacterial and antifungal agent.
　このように、給水側スペーサ１３に、抗菌・抗カビ剤を配合することで、蛇口７を閉めて浄水システムＰの経路内の水の流れが停滞した状態のときに、給水側スペーサ１３に練り込んだ抗菌・抗カビ剤が、給水側スペーサ１３の配置内に残存した水に溶出することになる。 Thus, by mixing the antibacterial and antifungal agent into the water supply side spacer 13, the faucet 7 is closed and the water flow in the path of the water purification system P stagnates, and the water supply side spacer 13 is kneaded The incorporated antibacterial and antifungal agent is eluted in the water remaining in the arrangement of the water supply side spacer 13.
　以上、説明したように、本実施形態の逆浸透膜モジュール１によれば、袋状となった逆浸透膜１１の外側に配置される網状の給水側スペーサ１３に抗菌・抗カビ剤を配合している。そのため、逆浸透膜モジュール１内で水が停滞した状態、つまり、蛇口７を閉じた状態では、給水側スペーサ１３に配合した抗菌・抗カビ剤が給水側スペーサ１３の配置内に残存した水に溶出される。そして、溶出した抗菌・抗カビ剤によって給水側スペーサ１３で微生物が繁殖するのが抑制されるとともに、給水側スペーサ１３で繁殖した微生物を静菌できるようになる。そのため、逆浸透膜１１が微生物により閉塞されてしまうのを容易に抑制することができるようになる。 As described above, according to the reverse osmosis membrane module 1 of the present embodiment, the antibacterial / antifungal agent is compounded in the reticulated water supply side spacer 13 disposed outside the bag-like reverse osmosis membrane 11 ing. Therefore, when the water stagnates in the reverse osmosis membrane module 1, that is, when the faucet 7 is closed, the antibacterial and antifungal agent compounded in the water supply side spacer 13 remains in the water remaining in the arrangement of the water supply side spacer 13. Elute. And while it is suppressed that microorganisms proliferate by the water supply side spacer 13 by the eluted antibacterial and antifungal agent, the microbe which propagated by the water supply side spacer 13 can be bacterized. Therefore, it can be easily suppressed that the reverse osmosis membrane 11 is blocked by the microorganism.
　また、抗菌・抗カビ剤は逆浸透膜１１を透過しないため、抗菌・抗カビ剤が浄水に混入されるのを避けることができる。その結果、給水直後であっても捨て水をすること無く直ちに使用できるため、水が無駄になるのを防止することができる。 In addition, since the antifungal agent does not permeate the reverse osmosis membrane 11, it is possible to prevent the antifungal agent from being mixed in the purified water. As a result, even immediately after water supply, since it can be used immediately without draining water, waste of water can be prevented.
　また、本実施形態によれば、逆浸透膜１１の内側に透過水側スペーサ１２を配置するとともに当該逆浸透膜１１の外側に給水側スペーサ１３を配置し、袋状となった逆浸透膜１１の開放側端部を集水管１４の内部と連通するように固定した状態で当該集水管１４の周りに巻き付けるとともに、最外周を防水性の膜１５によって水密に被覆し、集水管１４の一端側に、供給口１ａを形成した第１の蓋体１６を取り付けるとともに、他端に、透過水吐出口１ｂおよび濃縮水吐出口１ｃを形成した第２の蓋体１７を取り付けることで逆浸透膜モジュール１を形成している。そのため、逆浸透膜モジュール１を円柱状にすることができ、浄水システムＰに容易に組み込むことができるようになる。 Further, according to the present embodiment, the permeated water side spacer 12 is disposed inside the reverse osmosis membrane 11, and the water supply side spacer 13 is disposed outside the reverse osmosis membrane 11, and the reverse osmosis membrane 11 is formed into a bag shape. While being fixed so as to communicate the inside of the water collection pipe 14 with the open side end of the water collection pipe 14, it is wound around the water collection pipe 14, and the outermost periphery is covered watertight with a waterproof membrane 15. The reverse osmosis membrane module is attached by attaching the first lid 16 having the supply port 1a formed thereon and the second lid 17 having the permeated water outlet 1b and the concentrated water outlet 1c formed at the other end. Form one. Therefore, the reverse osmosis membrane module 1 can be made cylindrical, and can be easily incorporated into the water purification system P.
　また、本実施形態にかかる逆浸透膜モジュール１を浄水システムＰに組み込めば、薬液等を用いて逆浸透膜モジュール１を洗浄する必要がなくなり、常時使用することのできる浄水システムＰを得ることができる。 Moreover, if the reverse osmosis membrane module 1 according to the present embodiment is incorporated into the water purification system P, there is no need to wash the reverse osmosis membrane module 1 using a chemical solution or the like, and a water purification system P that can be always used can be obtained. it can.
　ところで、従来では給水側のスペーサに抗菌剤が使用されていないが、その主な理由としては、逆浸透膜の材料として一般には合成膜の芳香族ポリアミドが用いられていることがあげられる。この芳香族ポリアミドは高濃度の塩素化合物や酸化剤に弱く材料劣化する虞があるためである。また、逆浸透膜は一般的に産業用で使用されることが多いため、スペーサに抗菌剤を配合するコストよりも定期的に洗浄する方が安いということも一因としてあげることができる。 By the way, although the antibacterial agent is not conventionally used for the spacer by the side of water supply, the main reason is that the aromatic polyamide of a synthetic membrane is generally used as a material of a reverse osmosis membrane. This aromatic polyamide is weak to a high concentration of chlorine compounds and oxidizing agents, which may cause material deterioration. Moreover, since a reverse osmosis membrane is generally used for industrial use in many cases, it can also be mentioned as a factor that it is cheaper to periodically wash it than the cost of blending an antibacterial agent into a spacer.
　なお、抗菌・抗カビ剤としては、非酸化系で比較的低濃度で作用する銀系抗菌剤および抗カビ剤（ＴＢＺ）を用いることが好ましく、それらを給水側スペーサ１３に含有させることにより、薬剤洗浄のメンテナンスを不要としつつ細菌繁殖による逆浸透膜１１の閉塞による性能低下を抑制することができる。また、浄水システムは、家庭用の浄水システムＰとしてだけでなく、工業用の浄水システムとしても用いることができる。 As the antibacterial and antifungal agent, it is preferable to use a silver-based antibacterial agent and an antifungal agent (TBZ) which are non-oxidative and act at a relatively low concentration, and by containing them in the water supply side spacer 13, It is possible to suppress the performance decrease due to the blockage of the reverse osmosis membrane 11 due to bacterial reproduction while making maintenance of the drug cleaning unnecessary. Further, the water purification system can be used not only as a household water purification system P but also as an industrial water purification system.
　（第２実施形態）
　本実施形態にかかる逆浸透膜モジュール１Ａは、図４に示すように、基本的に上記第１実施形態の逆浸透膜モジュール１と同様に、袋状に形成されて巻回される逆浸透膜１１と、袋状となった逆浸透膜１１の内側に配置される網状の透過水側スペーサ１２と、袋状となった逆浸透膜１１の外側に配置される網状の給水側スペーサ１３と、を有している。そして、給水側スペーサ１３から供給される供給水が逆浸透膜１１を透過することで生成される透過水は、透過水側スペーサ１２を伝って透過水吐出口１ｂへと導かれる一方、逆浸透膜１１を透過しない供給水は、濃縮水となって濃縮水吐出口１ｃへと導かれる。 Second Embodiment
As shown in FIG. 4, the reverse osmosis membrane module 1A according to the present embodiment is basically formed into a bag shape and wound, similarly to the reverse osmosis membrane module 1 of the first embodiment. 11; a mesh-like permeated water side spacer 12 disposed inside the bag-shaped reverse osmosis membrane 11; a mesh-like water supply spacer 13 disposed outside the bag-shaped reverse osmosis membrane 11; have. Then, the permeated water generated by the feed water supplied from the water supply side spacer 13 passing through the reverse osmosis membrane 11 is guided to the permeated water discharge port 1 b along the permeated water side spacer 12 while the reverse osmosis The feed water which does not permeate the membrane 11 becomes concentrated water and is led to the concentrated water discharge port 1c.
　ここで、本実施形態が上記第１実施形態と主に異なる点は、給水側スペーサ１３を透光性部材で形成するとともに、その給水側スペーサ１３に紫外線を照射するＵＶランプ２０を設けたことにある。さらに、本実施形態では、透光性部材として光ファイバーを用いている。 Here, the present embodiment is mainly different from the first embodiment in that the water supply side spacer 13 is formed of a translucent member, and the water supply side spacer 13 is provided with a UV lamp 20 for irradiating ultraviolet light. It is in. Furthermore, in the present embodiment, an optical fiber is used as the light transmitting member.
　本実施形態では、ＵＶランプ２０は、紫外線が光ファイバーで形成された給水側スペーサ１３に照射されるように配置されている。たとえば、巻回されたそれぞれの給水側スペーサ１３に接するようにＵＶランプ２０を１つまたは複数設け、当該ＵＶランプ２０を給水側スペーサ１３と一緒に巻き込むことで、紫外線が光ファイバーで形成された給水側スペーサ１３に照射されるように配置する。このとき、ＵＶランプ２０の端子２０ａ、２０ｂが第１の蓋体１６の給水口１ａから突出されるようになっており、それら端子２０ａ、２０ｂと各ＵＶランプ２０とが電気的に接続されている。 In the present embodiment, the UV lamp 20 is disposed such that ultraviolet light is irradiated to the water supply side spacer 13 formed of an optical fiber. For example, one or more UV lamps 20 are provided so as to be in contact with the wound water-supply-side spacers 13, and the UV lamps 20 are wound together with the water-supply-side spacers 13 to supply water formed by optical fibers with ultraviolet light. It arranges so that side spacer 13 may be irradiated. At this time, the terminals 20a and 20b of the UV lamp 20 are projected from the water supply port 1a of the first lid 16, and the terminals 20a and 20b and the respective UV lamps 20 are electrically connected. There is.
　このように、ＵＶランプ２０を、巻回されたそれぞれの給水側スペーサ１３に接するように配置するとともに、給水側スペーサ１３を透光性部材である光ファイバーで形成することで、ＵＶランプ２０の紫外線を、巻回された給水側スペーサ１３の光ファイバーを通って広範囲に行き渡らせることができるようになる。 As described above, the UV lamps 20 are arranged to be in contact with the wound water-supply-side spacers 13, and the water-supply-side spacers 13 are formed of an optical fiber which is a translucent member. Can be widely distributed through the optical fiber of the wound water supply side spacer 13.
　以上の本実施形態によっても、上記第１実施形態と同様の作用、効果を奏することができる。 According to the above-described embodiment, the same operation and effect as those of the first embodiment can be achieved.
　また、本実施形態によれば、袋状となった逆浸透膜１１の外側に配置される網状の給水側スペーサ１３を透光性部材で形成するとともに、給水側スペーサ１３に紫外線を照射するＵＶランプ２０を設けている。そのため、ＵＶランプ２０から照射された紫外線が給水側スペーサ１３の光ファイバー（透光性部材）を通って給水側スペーサ１３の広範囲に行き渡ることになる。その結果、給水側スペーサ１３で繁殖した微生物を紫外線によって静菌でき、袋状となった逆浸透膜１１の外側に形成される給水側スペーサ１３における微生物の繁殖を抑制することができる。そのため、逆浸透膜１１が微生物により閉塞されてしまうのを容易に抑制することができるようになる。 Further, according to the present embodiment, the mesh-like water supply side spacer 13 disposed outside the bag-like reverse osmosis membrane 11 is formed of a light transmitting member, and UV is irradiated to the water supply side spacer 13 A lamp 20 is provided. For this reason, the ultraviolet light emitted from the UV lamp 20 spreads over the wide area of the water supply side spacer 13 through the optical fiber (light transmitting member) of the water supply side spacer 13. As a result, the microbes propagated by the water supply side spacer 13 can be bacterized by ultraviolet light, and the reproduction of microbes in the water supply side spacer 13 formed outside the bag-like reverse osmosis membrane 11 can be suppressed. Therefore, it can be easily suppressed that the reverse osmosis membrane 11 is blocked by the microorganism.
　また、本実施形態によれば、透光性部材として光ファイバーを用いることで、ＵＶランプ２０から照射された紫外線の透過率を高めることができる。そのため、紫外線を給水側スペーサ１３のより広範囲に行き渡らせることができ、給水側スペーサ１３の静菌効率をより一層高めることができる。 Moreover, according to this embodiment, the transmittance | permeability of the ultraviolet-ray irradiated from the UV lamp 20 can be raised by using an optical fiber as a translucent member. Therefore, ultraviolet rays can be spread over a wider range of the water supply side spacer 13, and the bacteriostatic efficiency of the water supply side spacer 13 can be further enhanced.
　以上、本発明の好適な実施形態について説明したが、本発明は上記実施形態には限定されず、種々の変形が可能である。たとえば、上記第１および第２実施形態にかかる逆浸透膜モジュールを、その他の浄水システムに組み込むことも可能である。 As mentioned above, although preferred embodiment of this invention was described, this invention is not limited to the said embodiment, A various deformation | transformation is possible. For example, it is also possible to incorporate the reverse osmosis membrane module according to the first and second embodiments into another water purification system.
　本発明によれば、逆浸透膜が微生物によって閉塞されるのを抑制することのできる逆浸透膜モジュールを得るとともに常時使用することのできる浄水システムを得ることができる。 According to the present invention, it is possible to obtain a reverse osmosis membrane module capable of preventing the reverse osmosis membrane from being blocked by microorganisms, and to obtain a water purification system that can be always used.

Claims (6)

  1. 　袋状に形成された逆浸透膜と、当該逆浸透膜の内側に配置される透過水側スペーサと、前記逆浸透膜の外側に配置される給水側スペーサと、を有し、給水側スペーサに導入された供給水を透過水と濃縮水とに分離する逆浸透膜モジュールであって、
    　前記給水側スペーサに、抗菌・抗カビ剤を配合したことを特徴とする逆浸透膜モジュール。     A reverse osmosis membrane formed in a bag shape, a permeated water side spacer disposed inside the reverse osmosis membrane, and a water supply side spacer disposed outside the reverse osmosis membrane A reverse osmosis membrane module for separating introduced feed water into permeate and concentrated water, comprising:
    A reverse osmosis membrane module characterized in that an antibacterial and antifungal agent is blended in the water supply side spacer.
  2. 　前記給水側スペーサは、抗菌・抗カビ剤が配合された材料を用いて網状に形成されることを特徴とする請求項１に記載の逆浸透膜モジュール。 The reverse osmosis membrane module according to claim 1, wherein the water supply side spacer is formed in a net shape using a material in which an antibacterial and antifungal agent is blended.
  3. 　袋状に形成された逆浸透膜と、当該逆浸透膜の内側に配置される透過水側スペーサと、前記逆浸透膜の外側に配置される給水側スペーサと、を有し、給水側スペーサに導入された供給水を透過水と濃縮水とに分離する逆浸透膜モジュールであって、
    　前記給水側スペーサを透光性部材で形成するとともに、当該給水側スペーサに紫外線を照射するＵＶランプを設けたことを特徴とする逆浸透膜モジュール。     A reverse osmosis membrane formed in a bag shape, a permeated water side spacer disposed inside the reverse osmosis membrane, and a water supply side spacer disposed outside the reverse osmosis membrane A reverse osmosis membrane module for separating introduced feed water into permeate and concentrated water, comprising:
    A reverse osmosis membrane module characterized in that the water supply side spacer is formed of a translucent member and a UV lamp for irradiating the water supply side spacer with ultraviolet light is provided.
  4. 　前記透光性部材として光ファイバーを用いたことを特徴とする請求項３に記載の逆浸透膜モジュール。 The optical fiber was used as said translucent member, The reverse osmosis membrane module of Claim 3 characterized by the above-mentioned.
  5. 　前記逆浸透膜モジュールは、前記逆浸透膜の内側に前記透過水側スペーサを配置するとともに当該逆浸透膜の外側に前記給水側スペーサを配置し、袋状となった逆浸透膜の開放側端部を集水管の内部と連通するように固定した状態で当該集水管の周りに巻き付けるとともに、最外周を防水性の膜によって水密に被覆し、前記集水管の一端側に、供給口を形成した第１の蓋体を取り付けるとともに、他端に、透過水吐出口および濃縮水吐出口を形成した第２の蓋体を取り付けることで形成されることを特徴とする請求項１～４のうちいずれか１項に記載の逆浸透膜モジュール。 In the reverse osmosis membrane module, the permeated water side spacer is disposed inside the reverse osmosis membrane and the water supply side spacer is disposed outside the reverse osmosis membrane, and the open side end of the bag-shaped reverse osmosis membrane is formed. While being fixed so as to communicate with the inside of the water collection pipe, the part is wound around the water collection pipe, the outermost periphery is covered with a waterproof film in a watertight manner, and a supply port is formed on one end side of the water collection pipe The method according to any one of claims 1 to 4, characterized in that the first cover is attached and the other end is attached with a second cover having a permeated water outlet and a concentrated water outlet formed. The reverse osmosis membrane module according to claim 1 or 2.
  6. 　請求項１～４のうちいずれか１項に記載の逆浸透膜モジュールを組み込んだことを特徴とする浄水システム。 A water purification system incorporating the reverse osmosis membrane module according to any one of claims 1 to 4.
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