KR20180084384A - Apparatus and Method for Cleaning Membrane - Google Patents

Apparatus and Method for Cleaning Membrane Download PDF

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Publication number
KR20180084384A
KR20180084384A KR1020170007923A KR20170007923A KR20180084384A KR 20180084384 A KR20180084384 A KR 20180084384A KR 1020170007923 A KR1020170007923 A KR 1020170007923A KR 20170007923 A KR20170007923 A KR 20170007923A KR 20180084384 A KR20180084384 A KR 20180084384A
Authority
KR
South Korea
Prior art keywords
membrane
water
evaporation
formula
contaminants
Prior art date
Application number
KR1020170007923A
Other languages
Korean (ko)
Other versions
KR102392274B1 (en
Inventor
이상호
최용준
최지혁
Original Assignee
국민대학교산학협력단
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 국민대학교산학협력단 filed Critical 국민대학교산학협력단
Priority to KR1020170007923A priority Critical patent/KR102392274B1/en
Publication of KR20180084384A publication Critical patent/KR20180084384A/en
Application granted granted Critical
Publication of KR102392274B1 publication Critical patent/KR102392274B1/en

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Classifications

    • 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
    • B01D61/36—Pervaporation; Membrane distillation; Liquid permeation
    • B01D61/368—Accessories; Auxiliary operations
    • 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
    • B01D61/36—Pervaporation; Membrane distillation; Liquid permeation
    • B01D61/364—Membrane distillation
    • 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
    • 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
    • B01D65/10—Testing of membranes or membrane apparatus; Detecting or repairing leaks
    • B01D65/109—Testing of membrane fouling or clogging, e.g. amount or affinity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F3/04099—
    • 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
    • C02F1/447—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by membrane distillation
    • 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
    • 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
    • B01D2321/282—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling by spray flush or jet flush
    • 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
    • B01D2321/40—Automatic control of cleaning processes
    • 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
    • C02F2209/10—Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/16—Regeneration of sorbents, filters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124—Water desalination
    • Y02A20/131—Reverse-osmosis

Abstract

The present invention relates to an apparatus and a method for cleaning a membrane wherein, more specifically, a membrane evaporation scheme is performed by receiving raw water and bubbles which have total dissolved solids (TDS) of 58,000 mg/L or greater at the same time, and a spraying period of the bubbles is determined by performing calculation in accordance with a contamination index (FI) of a membrane of a mathematic formula 1 below, and desalination of seawater by the membrane evaporation scheme is performed, and, at the same time, the evaporation membrane is cleaned. Accordingly, contaminants are prevented from being attached to a surface of the membrane and attachment of the contaminants to the surface of the membrane is delayed. Consequently, effects such as extension of a service life of a separation membrane, an increase of quality of processed water, maintenance of a stable amount of water production and water quality, and reduction of an amount of use of chemicals can be expected. [mathematic formula 1] FI(%)=[(Q0-Qt)/Q0]×100 (In the formula, FI is a membrane contamination index, and Q0 is a production amount during the first one hour after initiation of filtration, and Qt is a production amount during one hour at present.)
KR1020170007923A 2017-01-17 2017-01-17 Apparatus and Method for Cleaning Membrane KR102392274B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020170007923A KR102392274B1 (en) 2017-01-17 2017-01-17 Apparatus and Method for Cleaning Membrane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020170007923A KR102392274B1 (en) 2017-01-17 2017-01-17 Apparatus and Method for Cleaning Membrane

Publications (2)

Publication Number Publication Date
KR20180084384A true KR20180084384A (en) 2018-07-25
KR102392274B1 KR102392274B1 (en) 2022-05-02

Family

ID=63058852

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020170007923A KR102392274B1 (en) 2017-01-17 2017-01-17 Apparatus and Method for Cleaning Membrane

Country Status (1)

Country Link
KR (1) KR102392274B1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010104902A (en) * 2008-10-30 2010-05-13 Daicen Membrane Systems Ltd Operation method of water purification system, and water purification system
KR20100057262A (en) * 2008-11-21 2010-05-31 한국건설기술연구원 Membrane fouling pollution index measurement apparatus
JP2016190220A (en) * 2015-03-31 2016-11-10 旭化成株式会社 Membrane distillation system and operation method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010104902A (en) * 2008-10-30 2010-05-13 Daicen Membrane Systems Ltd Operation method of water purification system, and water purification system
KR20100057262A (en) * 2008-11-21 2010-05-31 한국건설기술연구원 Membrane fouling pollution index measurement apparatus
JP2016190220A (en) * 2015-03-31 2016-11-10 旭化成株式会社 Membrane distillation system and operation method thereof

Also Published As

Publication number Publication date
KR102392274B1 (en) 2022-05-02

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