CN106512744A - Method for cleaning reverse osmosis membrane element - Google Patents
Method for cleaning reverse osmosis membrane element Download PDFInfo
- Publication number
- CN106512744A CN106512744A CN201610845297.0A CN201610845297A CN106512744A CN 106512744 A CN106512744 A CN 106512744A CN 201610845297 A CN201610845297 A CN 201610845297A CN 106512744 A CN106512744 A CN 106512744A
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- China
- Prior art keywords
- membrane element
- osmosis membrane
- cleaning
- reverse
- abluent
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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
-
- 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
- B01D65/022—Membrane sterilisation
-
- 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
-
- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Detergent Compositions (AREA)
Abstract
The invention discloses a method for cleaning a reverse osmosis membrane element. The method comprises the following steps: soaking the reverse osmosis membrane element in a non-oxidative bactericide; carrying out conventional closed-cycle cleaning on the soaked reverse osmosis membrane element with a detergent; flushing the cleaned reverse osmosis membrane element with de-mineralized water; preparing an alkaline cleaning solution by taking de-mineralized water as a solvent; carrying out conventional closed-cycle cleaning on the flushed reverse osmosis membrane element with the prepared alkaline cleaning solution; cleaning the cleaned reverse osmosis membrane element with de-mineralized water, thereby completing the cleaning of the reverse osmosis membrane element. According to the method, the hydrochloric acid added detergent and the special prepared alkaline cleaning solution are adopted to carry out cleaning, so that organic matters, colloids and residual bacteria can be effectively removed, the damage to the membrane element caused by chemical agents is reduced, the pollution to the membrane element caused the bacteria is avoided, the efficiency of use of the membrane element is increased, and the service life of the membrane element is prolonged.
Description
Technical field
The invention belongs to Membrane cleaning field, and in particular to a kind of cleaning method of reverse-osmosis membrane element.
Background technology
Used as a kind of brand-new water technology, membrane separation technique has penetrated into each industrial circle, in reality for reverse osmosiss
In the application process of border, reverse osmosis membrane manufacturing enterprise has extensive universality, but lack of targeted, the cleaning method of membrane component
It is that simple sour, alkali is cleaned repeatedly.
Low temperature, low turbidity, a difficult problem for the process always water treatment field of high Organic substance water, carry out reverse osmosiss to this kind of water
Membrane component after process can cause the service efficiency of film to drop significantly due to conventional cleaning agent formula and improperly cleaning way
Low, service life is shortened, and can more cause system actual treatment inefficiency, and operating cost is high, results in the need for Jing and often changes film, increases
Energy resource consumption and property loss.
The content of the invention
It is an object of the invention to provide a kind of improve by low temperature, low turbidity, the reverse osmosis membrane of high Organic substance water pollution
The cleaning method of element.
The technical scheme is that a kind of cleaning method of reverse-osmosis membrane element, including following step：（1）By reverse osmosis
Membrane element is put in non oxidizing bactericide, soaks 12-24 hours；（2）By the reverse-osmosis membrane element abluent after immersion
Carry out normal closed-cycle to clean 1 hour, and discharge abluent going out liquid；（3）By the reverse-osmosis membrane element demineralized water after cleaning
Rinse, until the pH value of water for flushing out is between 5 to 10；（4）Alkaline cleaning fluid, the cleaning are configured by solvent of demineralized water
Liquid mass concentration component is：Dodecylbenzene sodium sulfonate 0.1%, sodium hydroxide 0.1%, tetrasodium salt of EDTA 1%, trimerization
Sodium phosphate 0.1%；The pH of the alkaline cleaning fluid is 11.5；（5）By the reverse-osmosis membrane element step after flushing（4）The alkali of configuration
Property cleanout fluid carry out normal closed-cycle and clean 1 hour, and discharge alkaline cleaning fluid and go out liquid；（6）By the reverse osmosis membrane after cleaning
Element is cleaned with demineralized water, until the pH value of water for flushing out between 5 to 10, that is, completes the cleaning of reverse-osmosis membrane element.
Preferably, the step（2）Abluent be in non oxidizing bactericide add concentration for 30wt% hydrochloric acid it is molten
Liquid is until pH value resulting solution at 3.
Preferably, the step（2）Closed circulation clean when per 15 minutes monitor an abluent, when pH value is unqualified
It is 3 to be adjusted to pH value with the hydrochloric acid solution that concentration is 30wt%, when abluent is muddy, will integrally replace abluent.
Preferably, the step（5）Closed circulation monitored primary alkali abluent per 15 minutes when cleaning, pH value do not conform to
During lattice, concentration is that to adjust to pH value be 11.5 for the sodium hydroxide solution of 99wt%, when alkaline cleaner is muddy, integrally be replaced
Alkaline cleaner.
Beneficial effects of the present invention：The water quality of the particularitys such as low temperature, low turbidity, high Organic substance, high microorganism is carried out instead
Infiltration process film, soaked using non oxidizing bactericide, bactericidal effect can be improved, using add hydrochloric acid abluent and
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 antibacterial to membrane component, improves the service efficiency of membrane component, increased making for membrane component
Use the life-span.
Specific embodiment
For ease of skilled artisan understands that the present invention program, in conjunction with specific 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 element, including following step：（1）By reverse-osmosis membrane element
It is put in non oxidizing bactericide, soaks 12-24 hours；（2）Reverse-osmosis membrane element after immersion is carried out into routine with abluent
Closed circulation is cleaned 1 hour, and is discharged abluent and gone out liquid；（3）It is anti-after by cleaning
Permeable membrane device is rinsed with demineralized water, until the pH value of water for flushing out is between 5 to 10；（4）With demineralized water as solvent
Alkaline cleaning fluid is configured, the cleanout fluid mass concentration component is：Dodecylbenzene sodium sulfonate 0.1%, sodium hydroxide 0.1%, second
Ethylene diamine tetraacetic acid tetrasodium salt 1%, sodium tripolyphosphate 0.1%；The pH of the alkaline cleaning fluid is 11.5；（5）By the reverse osmosiss after flushing
Membrane component step（4）The alkaline cleaning fluid of configuration carries out normal closed-cycle and cleans 1 hour, and discharges alkaline cleaning fluid and go out
Liquid；（6）Reverse-osmosis membrane element after cleaning is cleaned with demineralized water, until the pH value of water for flushing out is between 5 to 10, i.e., it is complete
Into the cleaning of reverse-osmosis membrane element.
Preferably, the step（2）Abluent be in non oxidizing bactericide add concentration for 30wt% hydrochloric acid it is molten
Liquid is until pH value resulting solution at 3.The step（2）Closed circulation clean when per 15 minutes monitor an abluent, pH
When being worth unqualified, concentration is that to adjust to pH value be 3 for the hydrochloric acid solution of 30wt%, when abluent is muddy, will integrally replace cleaning
Agent.The step（5）Closed circulation clean when per 15 minutes monitor primary alkali abluent, when pH value is unqualified, concentration is
It is 11.5 that the sodium hydroxide solution of 99wt% is adjusted to pH value, when alkaline cleaner is muddy, will integrally replace alkaline cleaner.
The present invention program is exemplarily described to invention above in conjunction with specific embodiment, it is clear that the present invention is concrete
Realization is not subject to the restrictions described above, as long as employing the various insubstantial that method of the present invention design and technical scheme are carried out
Property improve, or it is not improved the design of invention and technical scheme are directly applied to into other occasions, in the protection of the present invention
Within the scope of.
Claims (4)
1. a kind of cleaning method of reverse-osmosis membrane element, it is characterised in that including following step：（1）By reverse osmosiss membrane element
Part is put in non oxidizing bactericide, soaks 12-24 hours；（2）Reverse-osmosis membrane element after immersion is carried out often with abluent
Advise closed circulation to clean 1 hour, and discharge abluent and go out liquid；（3）Reverse-osmosis membrane element after cleaning is rinsed with demineralized water, directly
PH value to the water for flushing out is between 5 to 10；（4）Alkaline cleaning fluid, the cleanout fluid quality are configured by solvent of demineralized water
Density component is：Dodecylbenzene sodium sulfonate 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 element step after flushing（4）The alkalescence cleaning of configuration
Liquid carries out normal closed-cycle and cleans 1 hour, and discharges alkaline cleaning fluid and go out liquid；（6）Reverse-osmosis membrane element after cleaning is used
Demineralized water is cleaned, until the pH value of water for flushing out between 5 to 10, that is, completes the cleaning of reverse-osmosis membrane element.
2. a kind of cleaning method of reverse-osmosis membrane element according to claim 1, it is characterised in that the step（2）'s
Abluent is that addition concentration is the hydrochloric acid solution of 30wt% until pH value resulting solution at 3 in non oxidizing bactericide.
3. a kind of cleaning method of reverse-osmosis membrane element according to claim 1, it is characterised in that the step（2）'s
An abluent was monitored when closed circulation is cleaned per 15 minutes, concentration is the hydrochloric acid solution adjustment of 30wt% when pH value is unqualified
It is 3 to pH value, when abluent is muddy, will integrally replaces abluent.
4. a kind of cleaning method of reverse-osmosis membrane element according to claim 1, it is characterised in that the step（5）'s
Primary alkali abluent was monitored when closed circulation is cleaned per 15 minutes, concentration is the sodium hydroxide of 99wt% when pH value is unqualified
It is 11.5 that solution is adjusted to pH value, when alkaline cleaner is muddy, will integrally replace alkaline cleaner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610845297.0A CN106512744A (en) | 2016-09-24 | 2016-09-24 | Method for cleaning reverse osmosis membrane element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610845297.0A CN106512744A (en) | 2016-09-24 | 2016-09-24 | Method for cleaning reverse osmosis membrane element |
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| Publication Number | Publication Date |
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| CN106512744A true CN106512744A (en) | 2017-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610845297.0A Pending CN106512744A (en) | 2016-09-24 | 2016-09-24 | Method for cleaning reverse osmosis membrane element |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107261853A (en) * | 2017-08-20 | 2017-10-20 | 合肥信达膜科技有限公司 | A kind of cleaning method of reverse osmosis membrane |
| CN107261854A (en) * | 2017-08-09 | 2017-10-20 | 广州环投环境服务有限公司 | A kind of cleaning method for the film being used in percolate treating process |
| CN107413201A (en) * | 2017-04-26 | 2017-12-01 | 镇江市惠灵顿膜业有限公司 | A kind of 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 |
| CN108854561A (en) * | 2017-11-15 | 2018-11-23 | 上海屹屹环境科技有限公司 | A kind of reverse osmosis cleaning agent |
| CN109966921A (en) * | 2019-04-26 | 2019-07-05 | 北京亦庄水务有限公司 | A kind of minimizing technology of counter-infiltration system pollutant |
| CN110237715A (en) * | 2019-06-27 | 2019-09-17 | 埃姆媞（无锡）分离技术有限公司 | Seperation film filters the membrane flux restoration methods after PCB waste water |
| CN111760460A (en) * | 2020-07-03 | 2020-10-13 | 广东嘉元科技股份有限公司 | Cleaning combination formula and cleaning process of RO (reverse osmosis) membrane for recycling reclaimed water of electrolytic copper foil |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103949164A (en) * | 2014-05-14 | 2014-07-30 | 师宗煤焦化工有限公司 | Chemical cleaning method for reverse osmosis membrane element |
| CN105214507A (en) * | 2015-11-12 | 2016-01-06 | 师宗煤焦化工有限公司 | The cleaning method of reverse-osmosis membrane element |
-
2016
- 2016-09-24 CN CN201610845297.0A patent/CN106512744A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103949164A (en) * | 2014-05-14 | 2014-07-30 | 师宗煤焦化工有限公司 | Chemical cleaning method for reverse osmosis membrane element |
| CN105214507A (en) * | 2015-11-12 | 2016-01-06 | 师宗煤焦化工有限公司 | The cleaning method of reverse-osmosis membrane element |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107413201A (en) * | 2017-04-26 | 2017-12-01 | 镇江市惠灵顿膜业有限公司 | A kind of cleaning method of reverse osmosis membrane |
| CN107261854A (en) * | 2017-08-09 | 2017-10-20 | 广州环投环境服务有限公司 | A kind of cleaning method for the film being used in percolate treating process |
| CN107261853A (en) * | 2017-08-20 | 2017-10-20 | 合肥信达膜科技有限公司 | A kind of cleaning method of reverse osmosis membrane |
| CN108854561A (en) * | 2017-11-15 | 2018-11-23 | 上海屹屹环境科技有限公司 | A kind of reverse osmosis cleaning agent |
| 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 |
| CN109966921A (en) * | 2019-04-26 | 2019-07-05 | 北京亦庄水务有限公司 | A kind of minimizing technology of counter-infiltration system pollutant |
| CN110237715A (en) * | 2019-06-27 | 2019-09-17 | 埃姆媞（无锡）分离技术有限公司 | Seperation film filters the membrane flux restoration methods after PCB waste water |
| CN110237715B (en) * | 2019-06-27 | 2021-08-17 | 埃姆媞（无锡）分离技术有限公司 | Membrane flux recovery method after PCB wastewater filtration by separation membrane |
| CN111760460A (en) * | 2020-07-03 | 2020-10-13 | 广东嘉元科技股份有限公司 | Cleaning combination formula and cleaning process of RO (reverse osmosis) membrane for recycling reclaimed water of electrolytic copper foil |
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Application publication date: 20170322 |