JPS5753204A - Method for washing membrane module - Google Patents
Method for washing membrane moduleInfo
- Publication number
- JPS5753204A JPS5753204A JP12890080A JP12890080A JPS5753204A JP S5753204 A JPS5753204 A JP S5753204A JP 12890080 A JP12890080 A JP 12890080A JP 12890080 A JP12890080 A JP 12890080A JP S5753204 A JPS5753204 A JP S5753204A
- Authority
- JP
- Japan
- Prior art keywords
- acid
- aqueous solution
- membrane module
- concn
- solution containing
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
Classifications
-
- 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
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/16—Use of chemical agents
- B01D2321/162—Use of acids
-
- 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
- B01D2321/164—Use of bases
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
PURPOSE:To remove scale effectively by a method wherein a membrane module polluted with scale is washed by an aqueous solution containing an acid and a surfactant and, thereafter, further washed by an aqueous solution containing NH4F. CONSTITUTION:A semi-permeable membrane module having a membrane surface deposited with scale, especially, a silicate of which separation capacity and a water permeating amount are lowered is washed by an aqueous solution containing an acid and a surfactant at first. As the aforementioned acid, a mineral acid such as hydrochloric acid or the like is used in a concn. of 1% of less and an organic acid such as citric acid is used together and a total acid concn. of said aqueous solution is 2-3%. Further, as the surfactant, a usual anionic or a nonionic surfactant is appropriately used in a concn. of 0.1-0.5%. Subsequently, after the aforementioned first stage washing, said membrane module is subjected to the second stage washing by using an aqueous solution containing NH4F in a concn. of about 1-5% to release and separate scale from a membrane surface and, thereby, the washing of the membrane module is completed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12890080A JPS5753204A (en) | 1980-09-16 | 1980-09-16 | Method for washing membrane module |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12890080A JPS5753204A (en) | 1980-09-16 | 1980-09-16 | Method for washing membrane module |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5753204A true JPS5753204A (en) | 1982-03-30 |
JPH0142726B2 JPH0142726B2 (en) | 1989-09-14 |
Family
ID=14996126
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12890080A Granted JPS5753204A (en) | 1980-09-16 | 1980-09-16 | Method for washing membrane module |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5753204A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108187501A (en) * | 2018-01-04 | 2018-06-22 | 京能十堰热电有限公司 | A kind of cleaning method of reverse osmosis membrane system organic pollution |
CN109019773A (en) * | 2018-07-10 | 2018-12-18 | 上海洗霸科技股份有限公司 | Cleaning process for reverse osmosis membrane knot silicon dirt |
CN109499382A (en) * | 2018-12-28 | 2019-03-22 | 四川万潮科技有限公司 | A kind of reverse osmosis membrane cleaning combination and preparation method thereof |
WO2021246025A1 (en) * | 2020-06-02 | 2021-12-09 | 栗田工業株式会社 | Method for cleaning separation membrane |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4939736A (en) * | 1972-08-29 | 1974-04-13 | ||
JPS5044989A (en) * | 1973-08-24 | 1975-04-22 | ||
JPS50146569A (en) * | 1974-05-16 | 1975-11-25 | ||
JPS5328579A (en) * | 1976-08-30 | 1978-03-16 | Koei Chemical Co | Removing agents of scale |
JPS5458686A (en) * | 1977-10-18 | 1979-05-11 | Sumitomo Electric Ind Ltd | Washing method for semipermeable membrane |
-
1980
- 1980-09-16 JP JP12890080A patent/JPS5753204A/en active Granted
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4939736A (en) * | 1972-08-29 | 1974-04-13 | ||
JPS5044989A (en) * | 1973-08-24 | 1975-04-22 | ||
JPS50146569A (en) * | 1974-05-16 | 1975-11-25 | ||
JPS5328579A (en) * | 1976-08-30 | 1978-03-16 | Koei Chemical Co | Removing agents of scale |
JPS5458686A (en) * | 1977-10-18 | 1979-05-11 | Sumitomo Electric Ind Ltd | Washing method for semipermeable membrane |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108187501A (en) * | 2018-01-04 | 2018-06-22 | 京能十堰热电有限公司 | A kind of cleaning method of reverse osmosis membrane system organic pollution |
CN109019773A (en) * | 2018-07-10 | 2018-12-18 | 上海洗霸科技股份有限公司 | Cleaning process for reverse osmosis membrane knot silicon dirt |
CN109499382A (en) * | 2018-12-28 | 2019-03-22 | 四川万潮科技有限公司 | A kind of reverse osmosis membrane cleaning combination and preparation method thereof |
WO2021246025A1 (en) * | 2020-06-02 | 2021-12-09 | 栗田工業株式会社 | Method for cleaning separation membrane |
JP2021186779A (en) * | 2020-06-02 | 2021-12-13 | 栗田工業株式会社 | Method of washing separation membrane |
CN115916384A (en) * | 2020-06-02 | 2023-04-04 | 栗田工业株式会社 | Method for cleaning separation membrane |
CN115916384B (en) * | 2020-06-02 | 2024-03-19 | 栗田工业株式会社 | Method for cleaning separation membrane |
Also Published As
Publication number | Publication date |
---|---|
JPH0142726B2 (en) | 1989-09-14 |
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