CN107261853A - A kind of cleaning method of reverse osmosis membrane - Google Patents
A kind of cleaning method of reverse osmosis membrane Download PDFInfo
- Publication number
- CN107261853A CN107261853A CN201710715723.3A CN201710715723A CN107261853A CN 107261853 A CN107261853 A CN 107261853A CN 201710715723 A CN201710715723 A CN 201710715723A CN 107261853 A CN107261853 A CN 107261853A
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- Prior art keywords
- cleaning
- reverse osmosis
- osmosis membrane
- alkaline
- agent
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- 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
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- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Detergent Compositions (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a kind of cleaning method of reverse osmosis membrane, including following steps：Reverse osmosis membrane is put into soak and soaked；The reverse osmosis membrane after immersion is carried out into normal closed-cycle with cleaning agent to clean；Reverse osmosis membrane after cleaning is rinsed with demineralized water；Alkaline cleaning fluid is configured by solvent of demineralized water；The reverse osmosis membrane after flushing is carried out into normal closed-cycle with the alkaline cleaning fluid of configuration to clean；Reverse osmosis membrane after cleaning is cleaned with demineralized water, that is, completes the cleaning of reverse osmosis membrane；The present invention is cleaned using the cleaning agent of addition hydrochloric acid and the alkaline cleaner of particular arrangement, can effectively organics removal, colloid and remaining bacteria, reduce damage of the chemical agent to membrane component, avoid pollution of the bacterium to membrane component, the service efficiency of membrane component is improved, the service life of membrane component is added.
Description
Technical field
The invention belongs to Membrane cleaning field, and in particular to a kind of cleaning method of reverse osmosis membrane.
Background technology
Counter-infiltration is as a kind of brand-new water technology, and membrane separation technique has penetrated into each industrial circle, in reality
In the application process of border, reverse osmosis membrane manufacturing enterprise has extensive generality, but lack of targeted, the cleaning method of membrane component
It is that simple sour, alkali is cleaned repeatedly.
Low temperature, low turbidity, the problem of the processing always water treatment field of high organic matter water, counter-infiltration is carried out to this kind of water
Membrane component after the processing cleaning way due to conventional cleaning agent formula and improperly, can cause the service efficiency of film to drop significantly
Low, service life is shortened, and can more cause system actual treatment inefficiency, and operating cost is high, results in the need for often changing film, increases
Energy resource consumption and property loss.
The content of the invention
It is an object of the invention to provide it is a kind of improve by low temperature, low turbidity, high organic matter water pollution reverse osmosis membrane
Cleaning method.
The technical scheme is that a kind of cleaning method of reverse osmosis membrane, including following steps：（1）By reverse osmosis membrane
It is put into soak and is soaked；（2）The reverse osmosis membrane after immersion is carried out into normal closed-cycle with cleaning agent to clean 1 hour,
And discharge cleaning agent and go out liquid；（3）Reverse osmosis membrane after cleaning is rinsed with demineralized water, until the pH value of water flushed out 5 to
Between 10；（4）Alkaline cleaning fluid is configured by solvent of demineralized water, the cleaning fluid mass concentration component is：Detergent alkylate sulphur
Sour sodium 0.1%, sodium hydroxide 0.1%, tetrasodium salt of EDTA 1%, sodium tripolyphosphate 0.1%；The pH of the alkaline cleaning fluid is
11.5；（5）By the reverse osmosis membrane step after flushing（4）The alkaline cleaning fluid of configuration carries out normal closed-cycle and cleaned 1 hour,
And discharge alkaline cleaning fluid and go out liquid；（6）Reverse osmosis membrane after cleaning is cleaned with demineralized water, until the pH value of the water flushed out exists
Between 5 to 10；（7）Reverse osmosis membrane diaphragm after cleaning is dried into winding, that is, completes the cleaning to reverse osmosis membrane.
It is preferred that, the step（1）Soak is acid detergent, and the acid detergent includes：Acid, reducing agent, kill
Microbial inoculum, Yan Heshui, the soak time are 12-24 hours.
It is preferred that, the step（2）Closed circulation cleaning when every 15 minutes monitoring cleaning agent, when pH value is unqualified
It is 3 that the hydrochloric acid solution for being 30wt% with concentration, which is adjusted to pH value, when cleaning agent is muddy, integrally to replace cleaning agent.
It is preferred that, the step（5）Closed circulation cleaning when every 15 minutes monitoring primary alkali cleaning agents, pH value do not conform to
It is 11.5 that the sodium hydroxide solution for being 99wt% with concentration during lattice, which is adjusted to pH value, when alkaline cleaner is muddy, integrally to be replaced
Alkaline cleaner.
It is preferred that, the alkaline cleaner includes：Alkali, surfactant, complexing agent, salt, alcohol, ketone and water.
It is preferred that, the surfactant is neopelex, and its mass concentration is 0.1-0.2%.
Beneficial effects of the present invention：Water quality to particularity such as low temperature, low turbidity, high organic matter, high microorganisms is carried out instead
Permeate processing film, soaked using non oxidizing bactericide, bactericidal effect can be improved, using add hydrochloric acid cleaning agent with
The alkaline cleaner of particular arrangement is cleaned, can effectively organics removal, colloid and remaining bacteria, reduce chemical agent pair
The damage of membrane component, it is to avoid pollution of the bacterium to membrane component, improves the service efficiency of membrane component, adds making for membrane component
Use the life-span.
Embodiment
For ease of skilled artisan understands that the present invention program, in conjunction with embodiment to technical solution of the present invention
It is further described in detail.
The present invention is a kind of cleaning method of reverse osmosis membrane, including following steps：（1）Reverse osmosis membrane is put into immersion
Soaked in liquid；（2）The reverse osmosis membrane after immersion is carried out into normal closed-cycle with cleaning agent to clean 1 hour, and discharged clear
Lotion goes out liquid；（3）Reverse osmosis membrane after cleaning is rinsed with demineralized water, until the pH value of the water flushed out is between 5 to 10；
（4）Alkaline cleaning fluid is configured by solvent of demineralized water, the cleaning fluid mass concentration component is：Neopelex
0.1%th, sodium hydroxide 0.1%, tetrasodium salt of EDTA 1%, sodium tripolyphosphate 0.1%；The pH of the alkaline cleaning fluid is 11.5；
（5）By the reverse osmosis membrane step after flushing（4）The alkaline cleaning fluid of configuration carries out normal closed-cycle cleaning 1 hour, side by side
Go out alkaline cleaning fluid and go out liquid；（6）Reverse osmosis membrane after cleaning is cleaned with demineralized water, until the pH value of water flushed out 5 to
Between 10；（7）Reverse osmosis membrane diaphragm after cleaning is dried into winding, that is, completes the cleaning to reverse osmosis membrane.
The step（1）Soak is acid detergent, and the acid detergent includes：Acid, reducing agent, bactericide, salt
And water, the soak time is 12-24 hours.The step（2）Closed circulation cleaning when every 15 minutes monitoring once clean
Agent, it is 3 that the hydrochloric acid solution for being 30wt% with concentration when pH value is unqualified, which is adjusted to pH value, when cleaning agent is muddy, integrally to be replaced
Cleaning agent.The step（5）Closed circulation cleaning when every 15 minutes monitoring primary alkali cleaning agent, with dense when pH value is unqualified
It is 11.5 that the sodium hydroxide solution that degree is 99wt%, which is adjusted to pH value, when alkaline cleaner is muddy, integrally to replace alkaline cleaning
Agent.The alkaline cleaner includes：Alkali, surfactant, complexing agent, salt, alcohol, ketone and water.The surfactant is 12
Sodium alkyl benzene sulfonate, its mass concentration is 0.1-0.2%.
Invention is exemplarily described above in conjunction with embodiment by the present invention program, it is clear that the present invention is specific
Realization is not subject to the restrictions described above, as long as employing the various insubstantial of inventive concept and technical scheme of the present invention progress
Property improve, or it is not improved the design of invention and technical scheme are directly applied into other occasions, the protection in the present invention
Within the scope of.
Claims (6)
1. a kind of cleaning method of reverse osmosis membrane, it is characterised in that including following steps：（1）Reverse osmosis membrane is put into leaching
Soaked in bubble liquid；（2）The reverse osmosis membrane after immersion is carried out into normal closed-cycle with cleaning agent to clean 1 hour, and discharged
Cleaning agent goes out liquid；（3）Reverse osmosis membrane after cleaning is rinsed with demineralized water, until the pH value of the water flushed out is between 5 to 10；
（4）Alkaline cleaning fluid is configured by solvent of demineralized water, the cleaning fluid mass concentration component is：Neopelex
0.1%th, sodium hydroxide 0.1%, tetrasodium salt of EDTA 1%, sodium tripolyphosphate 0.1%；The pH of the alkaline cleaning fluid is 11.5；
（5）By the reverse osmosis membrane step after flushing（4）The alkaline cleaning fluid of configuration carries out normal closed-cycle cleaning 1 hour, side by side
Go out alkaline cleaning fluid and go out liquid；（6）Reverse osmosis membrane after cleaning is cleaned with demineralized water, until the pH value of water flushed out 5 to
Between 10；（7）Reverse osmosis membrane diaphragm after cleaning is dried into winding, that is, completes the cleaning to reverse osmosis membrane.
2. a kind of cleaning method of reverse osmosis membrane according to claim 1, it is characterised in that the step（1）Soak
For acid detergent, the acid detergent includes：Acid, reducing agent, bactericide, Yan Heshui, the soak time are that 12-24 is small
When.
3. a kind of cleaning method of reverse osmosis membrane according to claim 1, it is characterised in that the step（2）Closing
The cleaning agent of monitoring in every 15 minutes during wash cycles, the hydrochloric acid solution for being 30wt% with concentration when pH value is unqualified is adjusted to pH
It is worth for 3, when cleaning agent is muddy, integrally replaces cleaning agent.
4. a kind of cleaning method of reverse osmosis membrane according to claim 1, it is characterised in that the step（5）Closing
Every 15 minutes monitoring primary alkali cleaning agents, the sodium hydroxide solution for being 99wt% with concentration when pH value is unqualified during wash cycles
It is 11.5 to adjust to pH value, when alkaline cleaner is muddy, integrally to replace alkaline cleaner.
5. a kind of cleaning method of reverse osmosis membrane according to claim 1, it is characterised in that the alkaline cleaner bag
Include：Alkali, surfactant, complexing agent, salt, alcohol, ketone and water.
6. the cleaning method of a kind of reverse osmosis membrane according to claim 1, it is characterised in that the surfactant is ten
Dialkyl benzene sulfonic acids sodium, its mass concentration is 0.1-0.2%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710715723.3A CN107261853A (en) | 2017-08-20 | 2017-08-20 | A kind of cleaning method of reverse osmosis membrane |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710715723.3A CN107261853A (en) | 2017-08-20 | 2017-08-20 | A kind of cleaning method of reverse osmosis membrane |
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| Publication Number | Publication Date |
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| CN107261853A true CN107261853A (en) | 2017-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710715723.3A Pending CN107261853A (en) | 2017-08-20 | 2017-08-20 | A kind of cleaning method of reverse osmosis membrane |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108465380A (en) * | 2018-05-31 | 2018-08-31 | 四川奥恒环保科技有限公司 | The cleaning method of reverse osmosis membrane |
| CN108686519A (en) * | 2018-08-16 | 2018-10-23 | 南京化学工业园热电有限公司 | A kind of back-washing method of ultrafiltration apparatus |
| CN108771973A (en) * | 2018-05-16 | 2018-11-09 | 南京帝膜净水材料开发有限公司 | A kind of cleaning method of wound membrane element |
| CN109046031A (en) * | 2018-09-04 | 2018-12-21 | 许昌学院 | The cleaning method and cleaning system of reverse osmosis membrane assembly |
| CN110139703A (en) * | 2017-03-07 | 2019-08-16 | 栗田工业株式会社 | The cleaning method for the treatment of chemicals and its modulator approach and polyamide-based reverse osmosis membrane |
| CN112915802A (en) * | 2021-02-05 | 2021-06-08 | 国家能源集团国源电力有限公司 | Alkali washing agent and alkali washing method for reverse osmosis device in coal-fired boiler water supply system |
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| CN104741006A (en) * | 2015-04-17 | 2015-07-01 | 赵广武 | Reverse osmosis membrane detergent |
| CN105517959A (en) * | 2013-08-28 | 2016-04-20 | 奥加诺株式会社 | Method for producing stabilized hypobromous acid composition, stabilized hypobromous acid composition, and slime inhibition method for separation membrane |
| CN106178965A (en) * | 2016-08-25 | 2016-12-07 | 常州联江环保科技有限公司 | A kind of Membrane cleaning protective agent |
| CN106512744A (en) * | 2016-09-24 | 2017-03-22 | 合肥信达膜科技有限公司 | Method for cleaning reverse osmosis membrane element |
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2017
- 2017-08-20 CN CN201710715723.3A patent/CN107261853A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105517959A (en) * | 2013-08-28 | 2016-04-20 | 奥加诺株式会社 | Method for producing stabilized hypobromous acid composition, stabilized hypobromous acid composition, and slime inhibition method for separation membrane |
| CN104741006A (en) * | 2015-04-17 | 2015-07-01 | 赵广武 | Reverse osmosis membrane detergent |
| CN106178965A (en) * | 2016-08-25 | 2016-12-07 | 常州联江环保科技有限公司 | A kind of Membrane cleaning protective agent |
| CN106512744A (en) * | 2016-09-24 | 2017-03-22 | 合肥信达膜科技有限公司 | Method for cleaning reverse osmosis membrane element |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110139703A (en) * | 2017-03-07 | 2019-08-16 | 栗田工业株式会社 | The cleaning method for the treatment of chemicals and its modulator approach and polyamide-based reverse osmosis membrane |
| CN110139703B (en) * | 2017-03-07 | 2020-08-07 | 栗田工业株式会社 | Water treatment chemical, method for preparing same, and method for cleaning polyamide reverse osmosis membrane |
| CN108771973A (en) * | 2018-05-16 | 2018-11-09 | 南京帝膜净水材料开发有限公司 | A kind of cleaning method of wound membrane element |
| CN108465380A (en) * | 2018-05-31 | 2018-08-31 | 四川奥恒环保科技有限公司 | The cleaning method of reverse osmosis membrane |
| CN108686519A (en) * | 2018-08-16 | 2018-10-23 | 南京化学工业园热电有限公司 | A kind of back-washing method of ultrafiltration apparatus |
| CN108686519B (en) * | 2018-08-16 | 2020-11-27 | 南京化学工业园热电有限公司 | Backwashing method of ultrafiltration device |
| CN109046031A (en) * | 2018-09-04 | 2018-12-21 | 许昌学院 | The cleaning method and cleaning system of reverse osmosis membrane assembly |
| CN109046031B (en) * | 2018-09-04 | 2021-07-23 | 许昌学院 | Cleaning method and cleaning system of reverse osmosis membrane module |
| CN112915802A (en) * | 2021-02-05 | 2021-06-08 | 国家能源集团国源电力有限公司 | Alkali washing agent and alkali washing method for reverse osmosis device in coal-fired boiler water supply system |
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