WO2013172241A1 - Dispositif et procédé de traitement d'eau - Google Patents

Dispositif et procédé de traitement d'eau Download PDF

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Publication number
WO2013172241A1
WO2013172241A1 PCT/JP2013/063000 JP2013063000W WO2013172241A1 WO 2013172241 A1 WO2013172241 A1 WO 2013172241A1 JP 2013063000 W JP2013063000 W JP 2013063000W WO 2013172241 A1 WO2013172241 A1 WO 2013172241A1
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WO
WIPO (PCT)
Prior art keywords
ozone
membrane module
water
membrane
air
Prior art date
Application number
PCT/JP2013/063000
Other languages
English (en)
Japanese (ja)
Inventor
錫輝 張
帥 ▲リー▼
亮 張
鈴木　辰彦
Original Assignee
前澤工業株式会社
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.)
Filing date
Publication date
Application filed by 前澤工業株式会社 filed Critical 前澤工業株式会社
Priority to CN201390000497.6U priority Critical patent/CN204265490U/zh
Publication of WO2013172241A1 publication Critical patent/WO2013172241A1/fr

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    • 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
    • B01D61/14—Ultrafiltration; Microfiltration
    • B01D61/18—Apparatus therefor
    • 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
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/30—Polyalkenyl halides
    • B01D71/32—Polyalkenyl halides containing fluorine atoms
    • B01D71/36—Polytetrafluoroethene
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
    • 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
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2315/00—Details relating to the membrane module operation
    • B01D2315/06—Submerged-type; Immersion type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
    • B01D2321/18—Use of gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
    • B01D2321/18—Use of gases
    • B01D2321/185—Aeration
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/23—O3

Definitions

  • the present invention relates to a water treatment apparatus and method, and more particularly, to a water treatment apparatus that performs water purification treatment and wastewater reuse treatment using an immersion membrane, and to this water treatment method.
  • ozone activated carbon treatment technology is a known advanced water purification treatment technology that integrates ozone oxidation, activated carbon adsorption, biodegradation, and the like.
  • the action of ozone enhances the biodegradability of organic matter, enhances the biodegradability of the activated carbon filter tank, and promotes the decomposition of the organic substance adsorbed by the activated carbon itself in the activated carbon filter tank due to the enhanced biological action.
  • the adsorption capacity of the activated carbon is restored, and the replacement period of the activated carbon is significantly extended.
  • Ozone activated carbon treatment technology enhances the ability to remove organic matter, and is superior to all conventional standard treatment technologies in terms of removing contaminants such as turbidity, ammoniacal nitrogen and odorous substances.
  • ozone activated carbon has a problem of biological leakage, and the biological safety of the discharged water cannot be guaranteed.
  • applying ozone activated carbon treatment technology to existing standard process water purification plants requires high costs for improvement work and requires a large site, which is limited by funds and land.
  • Membrane technology in water treatment is the 21st century drinking water treatment technology.
  • Membrane technologies represented by MF membranes and UF membranes are advantageous in water quality, site area, biosafety, and can be easily automated, and play an important role in the drinking water treatment field.
  • membrane contamination (or membrane clogging) in membrane filtration is a major challenge that hinders the application of membrane technology.
  • Previous studies have shown that agglomeration, oxidation, etc. are effective in delaying membrane contamination and stabilizing membrane flux, and recently include membrane filtration and agglomeration, adsorption, oxidation, biological effects, etc. Hybridization with other treatment processes has been extensively studied. Much of membrane application technology in large-scale water treatment facilities employs organic membranes.
  • the material for the membrane for example, cellulose acetate, polyvinylidene fluoride, polypropylene, polyethersulfone, and the like are known.
  • Many combinations of aggregation and organic films have been proposed, but combinations of organic films and oxidation treatments are rare. This is due to the fact that these currently employed organic films have low oxidation resistance and are difficult to use in an oxidizing atmosphere. For this reason, it has been proposed to combine oxidation and ceramic membranes, but because of the disadvantages of high cost of ceramic membranes, small membrane area per unit volume, high energy consumption, etc. Most remain at the laboratory level.
  • JP 2006-305443 A Japanese Patent Laid-Open No. 9-192459
  • the suspended components may not be sufficiently removed from the submerged membrane only by air aeration or ozone aeration alone.
  • the present invention provides a water treatment apparatus and method that can reliably remove suspended components adhering to the immersion membrane, and can stably obtain highly purified water and reused water from waste water.
  • the purpose is to do.
  • the water treatment apparatus of the present invention is a submerged membrane type water treatment apparatus that obtains treated water by separating the suspended components with a membrane module immersed in the water to be treated containing suspended components.
  • a membrane module immersed in the water to be treated containing suspended components.
  • an air diffuser for diffusing air toward the membrane module and an ozone diffuser for diffusing ozone-containing gas toward the membrane module are provided,
  • the membrane module is characterized in that both the support and the membrane are made of polytetrafluoroethylene.
  • the water treatment method of the present invention is a submerged membrane type water treatment method in which a suspended component contained in water to be treated is separated by a membrane module immersed in the water to be treated to obtain treated water.
  • Air and ozone-containing gas were simultaneously diffused into the membrane module from below, and the suspended components adhering to the membrane module were oxidized by chemical oxidation reaction with ozone in the diffused ozone-containing gas and diffused.
  • Suspended components adhering to the membrane module due to air bubbles are removed by physical vibration, and in particular, the ozone-containing gas contains 20 g or more of ozone per 1 m 3 of ozone-containing gas in a standard state. It is characterized by that.
  • various suspended substances can be reliably removed from the immersion membrane. Therefore, it is possible to stably obtain highly purified water and reused water from waste water.
  • the water treatment apparatus shown in this embodiment is an immersion membrane type water treatment apparatus in which the membrane module 12 is immersed in a liquid to be treated introduced into a treatment tank 11 from a treatment water introduction path (not shown). .
  • a treatment water introduction path (not shown)
  • the treated water lead-out path 13 communicating with the inside of the membrane module 12
  • the suspended matter in the liquid to be treated is captured by the membrane module 12. Separated treated water can be obtained.
  • an air diffuser 14 that diffuses air toward the membrane module 12 and an ozone diffuser 15 that diffuses ozone-containing gas toward the membrane module 12 are provided. Yes.
  • the air diffusing means 14 is connected to an air supply facility 16 that pressurizes and supplies air.
  • the ozone diffuser 15 is connected to an ozone generator 17 that generates ozone by silent discharge, for example.
  • the ozone-containing gas diffused from the ozone diffuser 15 is an ozone-containing gas containing 20 g or more of ozone per m 3 in a standard state (0 ° C., 100 kPa), that is, an ozone concentration of 20 g / Nm 3 or more, preferably 25 g. It is preferable to use an ozone-containing gas of / Nm 3 or more, and by diffusing an ozone-containing gas having a high ozone concentration, the suspended substances attached to the membrane module 12 can be effectively oxidized.
  • the amount of ozone added to the amount of treated water varies depending on the quality of the water to be treated, but is generally in the range of 0.1 to 2.0 mg / L.
  • the membrane module 12 is an immersion type hollow fiber filtration membrane, and water to be treated enters the inside of the membrane yarn from the outer periphery of the cylindrical membrane yarn through the membrane body (skin layer) and the support body (support layer). Then, the treated water flows out from the end of the membrane yarn. The suspended matter is separated from the treated water by being blocked by the membrane body on the outer periphery of the membrane yarn.
  • a material having ozone resistance for example, polytetrafluoroethylene (PTFE).
  • the membrane module 12 removes the ozone-containing gas from the ozone diffuser 15.
  • the suspended components adhering to the membrane module 12 can be chemically oxidized by the strong oxidizing power of ozone contained in the ozone-containing gas, and the air is diffused from the air aeration means 14.
  • the suspended components adhering to the membrane module 12 are physically removed from the membrane module 12 by vibration caused by air bubbles diffused from the air diffusing means 14. Can do.
  • organic matter and microorganisms in the water to be treated can be decomposed and removed, sterilized, and sterilized by the oxidizing action of ozone.
  • the ozone concentration is lower than when only ozone-containing gas is diffused, but the ozone in the ozone-containing gas can reliably oxidize contaminants on the film surface. In addition, oxidized contaminants can be stripped from the membrane surface by aerated air.
  • the suspended components adhering to the membrane module 12 are surely removed to increase the differential pressure.
  • treated water obtained by separating suspended components from the treated water for example, highly treated purified water and reused water from waste water can be stably obtained at a high flow rate.
  • the membrane module 12 formed of polytetrafluoroethylene it is possible to suppress a deterioration of the membrane due to ozone and continue a stable operation over a long period of time.
  • the air diffuser 14 and the ozone diffuser 15 are not limited to the operation in which air is diffused at the same time, and there may be an operation period in which air is diffused from only one of them. Furthermore, the amount of air diffused from each air diffuser can be set as appropriate according to the state of the membrane module 12.
  • ancillary equipment attached to the submerged membrane type water treatment apparatus such as sludge removal means and backwashing means, use the auxiliary equipment provided in the conventionally known submerged membrane type water treatment apparatus as it is. Therefore, detailed description thereof will be omitted.
  • Change of the differential pressure when the ozone-containing gas having an ozone concentration of 20 g / Nm 3 is diffused from the ozone and the ozone-containing gas having an ozone concentration of 10 g / Nm 3 from the ozone aeration means 15 while operating the air aeration means 14 The change in differential pressure when air was diffused was measured.
  • SYMBOLS 11 Treatment tank, 12 ... Membrane module, 13 ... Treatment water extraction route, 14 ... Air diffuser, 15 ... Ozone diffuser, 16 ... Air supply equipment, 17 ... Ozone generator

Landscapes

  • 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)
  • Treatment Of Water By Oxidation Or Reduction (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

L'invention concerne un dispositif de traitement d'eau de type à membrane immergée, qui est un dispositif de traitement d'eau apte à éliminer de façon fiable des composants en suspension adhérant à la membrane immergée et à obtenir de façon stable de l'eau propre ou de l'eau recyclée à partir d'eaux usées, hautement traitée, et qui obtient de l'eau traitée par séparation de composants en suspension à l'aide d'un module de membrane (12) immergé dans l'eau contenant des composants en suspension à traiter, qui comprend un moyen de diffusion d'air (14) qui diffuse de l'air vers le module de membrane et un moyen de diffusion d'ozone (15) qui diffuse un gaz contenant de l'ozone vers le module de membrane en-dessous du module de membrane, et qui diffuse simultanément de l'air et le gaz contenant de l'ozone vers le module de membrane pour oxyder les composants en suspension adhérant au module de membrane par une réaction d'oxydation chimique à l'aide de l'ozone dans le gaz contenant de l'ozone diffusé et pour éliminer les composants en suspension adhérant au module de membrane par une vibration physique à l'aide de bulles d'air de l'air diffusé.
PCT/JP2013/063000 2012-05-16 2013-05-09 Dispositif et procédé de traitement d'eau WO2013172241A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201390000497.6U CN204265490U (zh) 2012-05-16 2013-05-09 水处理装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012112189A JP2015061716A (ja) 2012-05-16 2012-05-16 水処理装置及び方法
JP2012-112189 2012-05-16

Publications (1)

Publication Number Publication Date
WO2013172241A1 true WO2013172241A1 (fr) 2013-11-21

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Family Applications (1)

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PCT/JP2013/063000 WO2013172241A1 (fr) 2012-05-16 2013-05-09 Dispositif et procédé de traitement d'eau

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JP (1) JP2015061716A (fr)
CN (1) CN204265490U (fr)
WO (1) WO2013172241A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9333464B1 (en) 2014-10-22 2016-05-10 Koch Membrane Systems, Inc. Membrane module system with bundle enclosures and pulsed aeration and method of operation
USD779631S1 (en) 2015-08-10 2017-02-21 Koch Membrane Systems, Inc. Gasification device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6695515B1 (ja) * 2019-06-17 2020-05-20 三菱電機株式会社 ろ過膜洗浄装置、ろ過膜洗浄方法、および水処理システム

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001191097A (ja) * 1999-10-25 2001-07-17 Sumitomo Precision Prod Co Ltd 排水処理方法
JP2010253354A (ja) * 2009-04-22 2010-11-11 Sumitomo Electric Ind Ltd 膜分離活性汚泥処理装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001191097A (ja) * 1999-10-25 2001-07-17 Sumitomo Precision Prod Co Ltd 排水処理方法
JP2010253354A (ja) * 2009-04-22 2010-11-11 Sumitomo Electric Ind Ltd 膜分離活性汚泥処理装置

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9333464B1 (en) 2014-10-22 2016-05-10 Koch Membrane Systems, Inc. Membrane module system with bundle enclosures and pulsed aeration and method of operation
US9956530B2 (en) 2014-10-22 2018-05-01 Koch Membrane Systems, Inc. Membrane module system with bundle enclosures and pulsed aeration and method of operation
US10702831B2 (en) 2014-10-22 2020-07-07 Koch Separation Solutions, Inc. Membrane module system with bundle enclosures and pulsed aeration and method of operation
USD779631S1 (en) 2015-08-10 2017-02-21 Koch Membrane Systems, Inc. Gasification device
USD779632S1 (en) 2015-08-10 2017-02-21 Koch Membrane Systems, Inc. Bundle body

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CN204265490U (zh) 2015-04-15
JP2015061716A (ja) 2015-04-02

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