WO2017086266A1 - 膜モジュール及び水処理システム - Google Patents

膜モジュール及び水処理システム Download PDF

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Publication number
WO2017086266A1
WO2017086266A1 PCT/JP2016/083671 JP2016083671W WO2017086266A1 WO 2017086266 A1 WO2017086266 A1 WO 2017086266A1 JP 2016083671 W JP2016083671 W JP 2016083671W WO 2017086266 A1 WO2017086266 A1 WO 2017086266A1
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WO
WIPO (PCT)
Prior art keywords
membrane
tubular filtration
water
casing
filtration membranes
Prior art date
Application number
PCT/JP2016/083671
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English (en)
French (fr)
Japanese (ja)
Inventor
誠人 尾田
寿生 萩本
水谷　洋
Original Assignee
三菱重工環境・化学エンジニアリング株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 三菱重工環境・化学エンジニアリング株式会社 filed Critical 三菱重工環境・化学エンジニアリング株式会社
Priority to KR1020187013003A priority Critical patent/KR102020164B1/ko
Priority to CN201680066489.XA priority patent/CN108348862A/zh
Publication of WO2017086266A1 publication Critical patent/WO2017086266A1/ja

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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
    • B01D63/06—Tubular membrane modules
    • B01D63/069—Tubular membrane modules comprising a bundle of tubular membranes
    • 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
    • B01D61/58—Multistep processes
    • 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
    • B01D63/06—Tubular 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
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2311/00—Details relating to membrane separation process operations and control
    • B01D2311/25—Recirculation, recycling or bypass, e.g. recirculation of concentrate into the feed
    • B01D2311/251—Recirculation of permeate
    • B01D2311/2513—Recirculation of permeate to concentrate side
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/20—Specific housing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2317/00—Membrane module arrangements within a plant or an apparatus
    • B01D2317/02—Elements in series
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2325/00—Details relating to properties of membranes
    • B01D2325/36—Hydrophilic membranes

Definitions

  • the present invention relates to a membrane module and a water treatment system for treating organic wastewater such as human waste.
  • membrane separation such as MF (microfiltration) and UF (ultrafiltration) for solid-liquid separation.
  • MF microfiltration
  • UF ultrafiltration
  • the membrane separation device a plurality of membrane modules including a cylindrical casing and a plurality of tubular filtration membranes (hollow fiber membranes) accommodated in the casing are used, and raw water is circulated inside the tubular filtration membrane.
  • An apparatus using a filtration method is known (for example, see Patent Document 1).
  • the permeated water that has permeated through the tubular filtration membrane is sucked by a suction pump and stored in, for example, a storage tank and used as appropriate.
  • the arrangement method of the tubular filtration membranes accommodated in the casings of the plurality of membrane modules is a parallel system. That is, the water to be treated is introduced into the plurality of tubular filtration membranes via the header of the casing. In the case of such a form, since the amount of the treated water to circulate increases, there is a problem that the driving power increases. In addition, when the water to be treated is not supplied uniformly to each tubular filtration membrane, there is a problem that the membrane surface flow rate becomes non-uniform, and sludge accumulates or stagnates on the tubular filtration membrane. Due to the accumulation and stagnation of sludge, there are problems such as (1) a tubular filtration membrane that is not effectively utilized, (2) a decrease in FLUX (outflow amount), and (3) a blockage of the tubular filtration membrane.
  • An object of the present invention is to provide a membrane module and a water treatment system capable of reducing the driving power of the water treatment system and suppressing sludge accumulation or stagnation on the tubular filtration membrane. To do.
  • the membrane module includes a cylindrical casing having an axial line extending in the vertical direction, a hydrophilic extension extending in the casing extending direction inside the casing, A plurality of tubular filtration membranes having a single-layer structure in which a functional monomer is copolymerized, one end of the tubular filtration membrane and the other end of the tubular filtration membrane are connected in series A plurality of connecting members connected in this manner.
  • the membrane module includes a plurality of through holes provided at one end in the extending direction of the casing and connected to one end (first end) of the plurality of tubular filtration membranes.
  • a partition wall, and a second partition wall provided at the other end (second end) in the extending direction of the casing and having a plurality of through-holes connected to the other ends of the plurality of tubular filtration membranes,
  • the connecting member may connect the plurality of through holes.
  • connection member may be a membrane connection plate provided with a membrane connection groove that connects the plurality of through holes.
  • the assembly process of the membrane module can be simplified. Moreover, disassembly and cleaning can be facilitated by reducing the number of parts.
  • the membrane module includes a cylindrical casing and a single unit in which the hydrophilic monomer is copolymerized in the casing in the extending direction of the casing.
  • a plurality of tubular filtration membranes having a layer structure, and a first partition wall provided at one end (first end) in the extending direction of the casing and having a plurality of through holes to which one ends of the plurality of tubular filtration membranes are connected
  • a second partition wall having a plurality of through holes provided at the other end (second end) in the extending direction of the casing and connected to the other ends of the plurality of tubular filtration membranes, and one ends of the tubular filtration membranes
  • a pair of membrane connection plates provided with membrane connection grooves that connect the other ends of the tubular filtration membranes so that the plurality of tubular filtration membranes are connected in series.
  • the water treatment system contains a biological treatment water tank for treating an organic substance contained in the treatment water, and a treatment water discharged from the biological treatment water tank.
  • a raw water tank, and a membrane separation apparatus that includes the membrane module according to any one of the above aspects (1) to (4) and separates the water to be treated supplied from the raw water tank into permeated water and concentrated water And a return line for returning the concentrated water to the biological treatment water tank, and the concentrated water is not returned to the raw water tank.
  • the membrane separation device may include a plurality of the membrane modules connected in series to each other.
  • the number of pipes connected to the membrane separation device is one, and the flow rate of water to be treated circulating in the water treatment system can be reduced. Thereby, the driving power for circulating treated water can be made small.
  • the present invention it is possible to reduce the flow rate of the water to be treated flowing through the tubular filtration membrane as compared with a method of connecting a plurality of tubular filtration membranes in parallel. Thereby, the driving power for circulating treated water can be made small. In addition, since the membrane surface flow rate becomes uniform, it is possible to suppress the accumulation or stagnation of sludge on the tubular filtration membrane.
  • the water treatment system 10 having the membrane module 1 of the first embodiment of the present invention is a biological treatment water tank that treats organic matter contained in the treated water W1 (first treated water, organic wastewater containing human waste and septic tank sludge). 11, raw water tank 12 in which treated water W2 (second treated water) discharged from biological treated water tank 11 is accommodated, and treated water W3 (third treated water) supplied from raw water tank 12 , Raw water) is separated into permeated water PW and concentrated water W4.
  • the biological treatment water tank 11 is a device that decomposes and removes BOD, nitrogen compounds, and the like in the liquid by the action of nitrifying bacteria and denitrifying bacteria, for example.
  • To-be-treated water tank 11 is supplied with treated water W ⁇ b> 1 through first pipe 15.
  • the biological treatment water tank 11 and the raw water tank 12 are connected by a second pipe 16.
  • the membrane separation device 13 includes a plurality of membrane modules 1.
  • the plurality of membrane modules 1 are arranged in parallel.
  • the plurality of membrane modules 1 are arranged vertically in the housing of the membrane separation device 13. That is, the axis A of the cylindrical casing 2 (see FIG. 2) of the membrane module 1 extends in the vertical direction.
  • the membrane module 1 has a casing 2 and a plurality of tubular filtration membranes 3 arranged inside the casing 2.
  • the membrane separation device 13 is a device that takes out the permeated water PW from the water to be treated W3 by using a method of filtering the water to be treated W3 while circulating it inside the tubular filtration membrane 3.
  • the raw water tank 12 and the membrane separation device 13 are connected via a raw water supply pipe 17.
  • a circulation pump 21 is provided in the raw water supply pipe 17.
  • the treated water W3 discharged from the raw water tank 12 is supplied to the membrane separation device 13 while being pressurized by the circulation pump 21.
  • the permeated water PW separated from the membrane separation device 13 is introduced into the permeated water pipe 18.
  • the permeated water pipe 18 is connected to the storage tank 20. That is, the permeate outlet 9 (see FIG. 2) of the membrane module 1 is connected to the permeate pipe 18.
  • a suction pump 22 is provided in the permeate water pipe 18.
  • the concentrated water W4 separated from the permeated water PW and discharged from the membrane separation device 13 is returned to the biological treatment water tank 11 through the return pipe 19 (return line) except for the excess sludge. That is, the concentrated water discharge port 8 (see FIG. 2) of the membrane module 1 is connected to the return pipe 19. Therefore, the concentrated water W4 is not returned to the raw water tank 12.
  • the treated water W2 discharged from the biological treatment water tank 11 returns to the biological treatment water tank 11 via the raw water tank 12 and the membrane separator 13. That is, the to-be-processed water W circulates through the piping of the water treatment system 10.
  • the plurality of membrane modules 1 are arranged in parallel. Specifically, the raw water supply pipe 17, the permeate water pipe 18, and the return pipe 19 are connected to each membrane module 1.
  • the membrane module 1 includes a cylindrical casing 2 and a plurality of tubular filtration membranes 3.
  • the casing 2 includes a cylindrical casing body 4, a first side wall 5 that closes a lower end of the casing body 4, a second side wall 6 that closes an upper end of the casing body 4, and a processing target formed on the casing body 4. It has a water introduction port 7, a concentrated water discharge port 8 formed in the casing body 4, and a permeate discharge port 9 formed in the casing body 4.
  • the membrane module 1 includes a first partition wall 30 and a second partition wall 31 that divide the inside of the casing 2 into three spaces.
  • a plurality of insertion holes 32 are formed in the first partition wall 30 and the second partition wall 31.
  • the insertion hole 32 is a through-hole penetrating in the plate thickness direction of the first partition wall 30 and the second partition wall 31.
  • the inner diameter of the insertion hole 32 is slightly larger than the outer diameter of the tubular filtration membrane 3.
  • the first partition 30 is provided at one end (first end) in the extending direction of the casing 2, and one ends of the plurality of tubular filtration membranes 3 are connected to the plurality of through holes 32 of the first partition 30.
  • the second partition wall 31 is provided at the other end (second end) in the extending direction of the casing 2, and the other ends of the plurality of tubular filtration membranes 3 are connected to the plurality of through holes 32 of the second partition wall 31.
  • the first partition 30 is a plate-shaped member, and is fixed below the extending direction of the casing 2 (on the first side wall 5 side).
  • a space surrounded by the casing body 4, the first partition wall 30, and the first side wall 5 is a lower header space S1.
  • the second partition wall 31 is a plate-shaped member, and is fixed above the extending direction of the casing 2 (on the second side wall 6 side).
  • a space surrounded by the casing body 4, the second partition wall 31 and the second side wall 6 is an upper header space S2.
  • a space surrounded by the casing body 4, the first partition wall 30, and the second partition wall 31 is a permeated water space S3.
  • the permeated water PW taken out from the plurality of tubular filtration membranes 3 is discharged into the permeated water space S ⁇ b> 3 and then introduced into the permeated water pipe 18 through the permeated water discharge port 9.
  • the treated water introduction port 7 is an opening that allows communication between the outside of the casing 2 and the lower header space S1.
  • the treated water inlet 7 is formed in the casing body 4.
  • the treated water introduction port 7 is provided between the first partition wall 30 and the first side wall 5 in the axis A direction of the casing 2.
  • the concentrated water discharge port 8 is an opening that allows communication between the outside of the casing 2 and the upper header space S2.
  • the concentrated water discharge port 8 is formed in the casing body 4.
  • the concentrated water discharge port 8 is provided between the second partition wall 31 and the second side wall 6 in the axis A direction of the casing 2.
  • the permeated water discharge port 9 is an opening that allows communication between the outside of the casing 2 and the permeated water space S3.
  • the permeated water discharge port 9 is formed in the casing body 4.
  • the permeate discharge port 9 is provided between the first partition wall 30 and the second partition wall 31 in the axis A direction of the casing 2.
  • each tubular filtration membrane 3 is fixed to the inner peripheral surface of the insertion hole 32 after being inserted into the insertion hole 32 of the first partition wall 30.
  • a space between the inner peripheral surface of the insertion hole 32 and the outer peripheral surface of the tubular filtration membrane 3 is sealed with a sealing material (not shown).
  • a sealing material a material that has an initial viscosity and hardens with time, such as an epoxy resin or a urethane resin, is preferable.
  • the other end of each tubular filtration membrane 3 is fixed to the insertion hole 32 of the second partition wall 31 in the same manner as one end of the tubular filtration membrane 3.
  • the plurality of tubular filtration membranes 3 of the present embodiment are connected in series. Specifically, the membrane module 1 of the present embodiment connects one end of the tubular filtration membrane 3 and the other end of the tubular filtration membrane 3 so that a plurality of tubular filtration membranes 3 are connected in series. Yes.
  • the ends of the tubular filtration membrane 3 are connected to each other by a U-shaped membrane connecting pipe 34.
  • the U-shaped membrane connecting pipe 34 is a curved cylindrical connecting member formed of an engineering plastic such as POM, for example.
  • the membrane connecting pipe 34 may be formed of a metal having excellent corrosion resistance such as SUS304.
  • the end of the membrane connecting pipe 34 is connected to the insertion hole 32 of the partition walls 30 and 31. You may connect the edge part of the membrane connection pipe 34 to the tubular filtration membrane 3 directly.
  • the tubular filtration membrane 3 has a cylindrical shape, and is formed of a polymer filtration membrane having a single layer structure in which a hydrophilic monomer is copolymerized on a single main constituent material. That is, the tubular filtration membrane 3 is formed of a single material as a main material. That the main material is formed of one kind of material means that one kind of resin occupies 50% by mass or more in the material (for example, resin) forming the tubular filtration membrane 3. The fact that the main material is formed of one kind of material means that the nature of the one kind of material dominates the nature of the constituent material. Specifically, it means a material in which one kind of resin has 50 mass% to 99 mass%.
  • the main materials constituting the tubular filtration membrane 3 include polyolefin chlorides such as vinyl chloride resin, polysulfone (PS), polyvinylidene fluoride (PVDF), polyethylene (PE), polyacrylonitrile (PAN), and polyether.
  • Polymer materials such as sulfone, polyvinyl alcohol (PVA), and polyimide (PI) can be used.
  • a vinyl chloride resin is particularly preferable.
  • vinyl chloride resins include vinyl chloride homopolymer (vinyl chloride homopolymer), a copolymer of a monomer having an unsaturated bond copolymerizable with vinyl chloride monomer and vinyl chloride monomer, and vinyl chloride monomer in the polymer.
  • vinyl chloride resins include graft copolymers obtained by graft copolymerization, and (co) polymers composed of chlorinated vinyl chloride monomer units.
  • hydrophilic monomers examples include: (1) A cationic group-containing vinyl monomer such as an amino group, an ammonium group, a pyridyl group, an imino group or a betaine structure and / or a salt thereof, (2) Hydrophilic nonionic group-containing vinyl monomers such as hydroxyl groups, amide groups, ester structures, ether structures, (3) Anionic group-containing vinyl monomer such as carboxyl group, sulfonic acid group, phosphoric acid group and / or salt thereof, (4) Other monomers may be mentioned.
  • the tube diameter of the tubular filtration membrane can be appropriately selected depending on the properties of the water to be treated W.
  • the inner diameter of the tubular filtration membrane 3 is 5 mm.
  • the inner diameter of the tubular filtration membrane 3 is 5 mm-10 mm, and when the coarse fiber amount ⁇ is 500 mg / liter or more, the inner diameter of the tubular filtration membrane 3 is Can be 10 mm or more.
  • the water to be treated W1 is treated in the biological treatment water tank 11. Specifically, the organic substance contained in the for-treatment water W1 is decomposed by microorganisms.
  • the water to be treated W2 discharged from the biological treatment water tank 11 is stored in the raw water tank 12.
  • the treated water W3 discharged from the raw water tank 12 is supplied to the membrane separation device 13 via the circulation pump 21, it is sent into the tubular filtration membrane 3 of the membrane module 1.
  • the permeated water space S3 in the casing 2 of the membrane module 1 becomes a negative pressure by the operation of the suction pump 22.
  • the suction pump 22 sucks in a direction substantially orthogonal to the flow of the water to be treated W3 flowing through the tubular filtration membrane 3 through the permeate discharge port 9.
  • the permeated water PW permeated from the tubular filtration membrane 3 is stored in the storage tank 20 through the permeated water discharge port 9 and the permeated water pipe 18.
  • the flow of the to-be-processed water W3 in the membrane module 1 is demonstrated using FIG.
  • the treated water W3 flowing into the lower header space S1 is introduced into the first tubular filtration membrane 3a.
  • the water to be treated W3 is introduced into the second tubular filtration membrane 3b through the membrane connection pipe 34a.
  • the water to be treated W3 is introduced to the fifth tubular filtration membrane 3e via the third tubular filtration membrane 3c and the fourth tubular filtration membrane 3d.
  • the treated water W3 flows into the upper header space S2 from the fifth tubular filtration membrane 3e, and is then discharged from the concentrated water discharge port 8.
  • the same amount of treated water W3 always passes through all the tubular filtration membranes 3.
  • the first tubular filtration membrane 3a, the treated water introduction port 7, and the fifth tubular filtration membrane 3e may be directly connected to the concentrated water discharge port 8 via the connection member 39 and the connection member 40. In this case, it is not necessary to provide the upper header space S2, and the configuration of the casing can be changed, such as eliminating the second side wall 6.
  • the entire amount of the concentrated water W4 discharged from the membrane separation device 13 is returned to the biological treatment water tank 11 through the return pipe 19, and is processed again.
  • the flow volume of the to-be-processed water W3 which flows through the membrane module 1 can be decreased.
  • the driving power for circulating the to-be-processed water W can be made small.
  • a membrane surface flow velocity can be improved. Thereby, it is possible to suppress the accumulation of sludge on the membrane surface of the tubular filtration membrane 3.
  • the membrane surface flow rate becomes uniform, it is possible to suppress the accumulation or sludge of sludge on the tubular filtration membrane 3. Thereby, all the tubular filtration membranes 3 can be used effectively. Moreover, the fall of FLUX (outflow amount) can be suppressed. Further, the tubular filtration membrane 3 can be prevented from being blocked.
  • the membrane surface flow rate of the water to be treated W3 can be lowered.
  • the membrane surface flow velocity can be set to, for example, 0.15 m / s-0.30 m / s.
  • the tubular filtration membrane 3 When the tubular filtration membrane 3 is hydrophobic, it is necessary to increase the membrane surface flow velocity (for example, 2.5 m / s). For this reason, the circulation flow rate increases, and it becomes necessary to return the concentrated water W4 discharged from the membrane separation device 13 to the raw water tank 12 and the biological treatment water tank 11.
  • a distribution tank that distributes the concentrated water W4 to the raw water tank 12 and the biological treatment water tank 11 and a pipe that returns the concentrated water W4 to the raw water tank 12 are required. .
  • the circulation flow rate of the water to be treated W can be reduced. Thereby, the power of the circulation pump 21 can be reduced. Further, a distribution tank that distributes the concentrated water W4 to the raw water tank 12 and the biological treatment water tank 11 and a return pump that returns the concentrated water W4 from the raw water tank 12 to the biological treatment water tank 11 are not required.
  • the diameter of the pipe can be reduced by reducing the flow rate. In addition, by reducing the flow rate, it is possible to reduce equipment such as a flow meter.
  • the water treatment system 10B of 2nd embodiment of this invention is demonstrated based on drawing.
  • differences from the first embodiment described above will be mainly described, and description of similar parts will be omitted.
  • a plurality of membrane modules 1 are connected in series with each other.
  • the membrane separator 13 includes three membrane modules 1
  • the water to be treated W3 discharged from the raw water tank 12 is introduced only into the first membrane module 1a and discharged from the first membrane module 1a.
  • the treated water is introduced only into the second membrane module 1b.
  • the treated water discharged from the second membrane module 1b is introduced only into the third membrane module 1c, and the concentrated water W4 discharged from the third membrane module 1c is introduced into the return pipe 19.
  • the raw water supply pipe 17 and the return pipe 19 connected to the membrane separation device 13 are each provided in one place, and the flow rate of the water to be treated W circulating in the water treatment system 10B can be reduced. Thereby, the driving power for circulating the to-be-processed water W can be made small.
  • the membrane module 1C of the present embodiment includes a pair of membrane connection plates 36 (see FIGS. 4 and 5) instead of the membrane connection tube 34 (see FIG. 2) of the first embodiment. Shows one of the pair of membrane connecting plates 36).
  • the membrane connecting plate 36 has a plate shape and is attached in close contact with the surface of the first partition 30 opposite to the surface facing the second partition 31.
  • the membrane connecting plate 36 is also attached to the surface of the second partition wall 31 opposite to the surface facing the first partition wall 30, but the description thereof is omitted because it has the same structure.
  • the membrane connecting plate 36 is connected to the first partition wall 30 so that the main surface is in close contact with the surface of the first partition wall 30 opposite to the surface facing the second partition wall 31.
  • a surface of the membrane connecting plate 36 that is in close contact with the first partition wall 30 is referred to as a contact surface 36a.
  • a plurality of membrane connection grooves 37 are formed in the close contact surface 36 a of the membrane connection plate 36.
  • the membrane connection plate 36 is formed with a to-be-treated water insertion hole 38 penetrating the contact surface 36a and the surface on the opposite side.
  • the membrane connecting groove 37 is a bottomed groove formed in the close contact surface 36 a of the membrane connecting plate 36.
  • the membrane connection groove 37 has the same function as the membrane connection tube 34 of the first embodiment.
  • the treated water insertion hole 38 is a hole that allows the tubular filtration membrane 3 and the header space to communicate with each other, and may be directly connected to the treated water introduction port 7 via the connection pipe 41.
  • the assembly process of the membrane module can be simplified as compared with the membrane module 1 of the first embodiment using a plurality of membrane connecting pipes 34. Moreover, disassembly and cleaning can be facilitated by reducing the number of parts.
  • the membrane module 1 may be placed horizontally. That is, the membrane module 1 may be arranged such that the axis A of the membrane module 1 extends in the horizontal direction. By placing the membrane module 1 horizontally, the membrane module 1 can be easily replaced even when a plurality of membrane modules 1 are arranged.
  • the present invention it is possible to reduce the flow rate of the water to be treated flowing through the tubular filtration membrane as compared with a method of connecting a plurality of tubular filtration membranes in parallel. Thereby, the driving power for circulating treated water can be made small. In addition, since the membrane surface flow rate becomes uniform, it is possible to suppress the accumulation or stagnation of sludge on the tubular filtration membrane.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Organic Chemistry (AREA)
  • Microbiology (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
PCT/JP2016/083671 2015-11-18 2016-11-14 膜モジュール及び水処理システム WO2017086266A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020187013003A KR102020164B1 (ko) 2015-11-18 2016-11-14 막 모듈 및 수처리 시스템
CN201680066489.XA CN108348862A (zh) 2015-11-18 2016-11-14 膜组件以及水处理系统

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JP2015225958A JP6519874B2 (ja) 2015-11-18 2015-11-18 水処理システム
JP2015-225958 2015-11-18

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KR (1) KR102020164B1 (ko)
CN (1) CN108348862A (ko)
TW (1) TWI648094B (ko)
WO (1) WO2017086266A1 (ko)

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