CN106799168A - A kind of cleaning agent for reverse osmosis membrane - Google Patents
A kind of cleaning agent for reverse osmosis membrane Download PDFInfo
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- CN106799168A CN106799168A CN201611200640.2A CN201611200640A CN106799168A CN 106799168 A CN106799168 A CN 106799168A CN 201611200640 A CN201611200640 A CN 201611200640A CN 106799168 A CN106799168 A CN 106799168A
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- reverse osmosis
- osmosis membrane
- cleaning 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 Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
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Abstract
The invention discloses a kind of cleaning agent for reverse osmosis membrane, including following component in parts by weight：45 65 parts of 38 parts of acid dimethyl sodium, 18 22 parts of tetrapotassium pyrophosphate, 3 10 parts of nonylpenol polyoxyethyene ether, 8 13 parts of dodecyl dimethyl ammonium chloride, 26 parts of n-butanol and water.Reverse osmosis membrane cleaning agent cleaning performance of the invention is good, is not required to make membrane recover to improve the operation conditions of system to ideal effect by coordinating other products, makes the duration of runs of system longer；The cleaning performance of film is improved, extends the life-span of film.
Description
Technical field
The present invention relates to reverse osmosis membrane field, more particularly to a kind of cleaning agent for reverse osmosis membrane.
Background technology
In counter-infiltration system running, pretreatment unit is the material for causing fouling membrane in order to remove as much as possible
And specially design, even so, film pollution in use can not be avoided completely, reverse osmosis membrane surface can be due to original
In water in the presence of the polluter such as mud pool, jelly, organic matter, microorganism and membrane separating process to the concentration of indissoluble material and
The deposition of generation, and then form the pollution to reverse osmosis membrane.After reverse osmosis membrane is contaminated, just occur system aquifer yield reduce,
Decline in terms of the film properties such as the transmitance increase of salt.But due to reverse osmosis equipment in use, influence its of film properties
The change of its principal element (pressure, temperature etc.), the phenomenon of fouling membrane is possible to be covered by other factorses, so needing in equipment
The operation of pollutant in periodically removal membranous system is carried out during operation.
Need to clean reverse osmosis membrane when there are following situations：1) equipment after counter-infiltration system standardization produces water
Amount reduces 10~15%；2) the membranous system operating pressure after standardizing increased 15%；3) the membranous system salt after standardizing is saturating
Cross the more initial normal value of rate and increased 10~15%；4) operation pressure compared with initial job when increased 15%.
Presently commercially available counter-infiltration cleaning agent is generally acidic cleaner and alkaline cleaner is used cooperatively, and cleaning is multiple
Miscellaneous, counter-infiltration cleaning agent of the present invention is not required to make membrane recover to ideal effect by coordinating other products.
The content of the invention
It is an object of the invention to：A kind of reverse osmosis membrane cleaning agent is provided, its stable performance, pollutant dissolving is fast, cleaning
Effect is preferable, improves system operation situation, extends system operation time, has reached former design requirement.
A kind of cleaning agent for reverse osmosis membrane, component is acid dimethyl sodium, tetrapotassium pyrophosphate, nonyl phenol polychlorostyrene second
Alkene ether, n-butanol and water.
Preferably, the composition by weight is 3-8 parts of acid dimethyl sodium, tetrapotassium pyrophosphate 18-22 parts, nonyl phenol
Ethoxylate 3-10 parts, n-butanol 2-6 parts and water 45-65 parts.
Preferably, the component also includes dodecyl dimethyl ammonium chloride, and parts by weight are 8-13 parts.
Preferably, the component 5 parts of acid dimethyl sodium, 20 parts of tetrapotassium pyrophosphate, dodecyl two by weight
55 parts of 10 parts of ammonio methacrylate, 6 parts of nonylpenol polyoxyethyene ether, n-butanol 4 and distilled water.
A kind of preparation method of cleaning agent for reverse osmosis membrane, step is as follows：
S1：During acid dimethyl sodium, tetrapotassium pyrophosphate, dodecyl dimethyl ammonium chloride sequentially added into reactor,
After stirring 30min, 33-37 DEG C is gradually heating to 5 DEG C/min；
S2：Nonylpenol polyoxyethyene ether and n-butanol are added in whipping process, after adding distilled water, with 5 DEG C/min
45-49 DEG C is gradually heating to, 30min is stirred；
S3：2-3h is incubated after stopping stirring, room temperature is cooled to and is obtained final product this product.
Preferably, the mixing speed of the reactor is 300-400r/min.
Action principle of the present invention：
It is an object of the invention to provide a kind of special acidic cleaner of counter-infiltration, using the oxidisability of its own, institute's band
The sequestering power of active group, will be covered in dirty scale and corrosion product of metal surface etc. and peels off, infiltration, dispersion, chelates to washing
In liquid, to reach the purpose of cleaning.
Main component of the invention is acid dimethyl sodium, tetrapotassium pyrophosphate, dodecyl dimethyl ammonium chloride, nonyl
Phenol Ethoxylate etc., tetrapotassium pyrophosphate has excellent complexing power, can be with the Ca in hard water2+、Mg2+Form the network of stabilization
Compound so as to softening of water, improve washability, take out stains.Nonylpenol polyoxyethyene ether is in pH value range and temperature wider
In the range of it is all very stable, resistance to hard water is strong, can be nonionic table of good performance with anions and canons surfactant compatibility
Face activating agent.By the coupling of acid dimethyl sodium, by the use of dodecyl dimethyl ammonium chloride as catalyst by Jiao
The potassium of phosphoric acid four and nonylpenol polyoxyethyene ether condense together.
The cleaning agent is to organic pollutions such as grease soils, organic colloid, the microorganisms on reverse osmosis membrane surface using alkali
Strong penetrating power and dispersibility are effectively removed, and their action principle is that saponification can occur with the fatty acid glycerine in greasy dirt
Effect forms nascent soap, greasy dirt is turned into water miscible material and is removed.
Compared with prior art, the device have the advantages that being：
Presently commercially available counter-infiltration cleaning agent is generally acidic cleaner and alkaline cleaner is used cooperatively, and cleaning is multiple
Miscellaneous, reverse osmosis membrane cleaning agent cleaning performance of the invention is good, is not required to make membrane recover to ideal effect by coordinating other products,
The operation conditions of improvement system, makes the duration of runs of system longer；The cleaning performance of film is improved, extends the life-span of film.
Specific embodiment
The present invention proposes that a kind of counter-infiltration scavenger specially that is used for is made further to explain in conjunction with specific embodiments to the present invention.
Embodiment 1
A kind of cleaning agent for reverse osmosis membrane, component 3 parts of acid dimethyl sodium, tetrapotassium pyrophosphate 18 by weight
Part, 8 parts of dodecyl dimethyl ammonium chloride, 3 parts of nonylpenol polyoxyethyene ether, 2 parts of n-butanol and 45 parts of distilled water.
A kind of preparation method of cleaning agent for reverse osmosis membrane, method and step is as follows：
S1：During acid dimethyl sodium, tetrapotassium pyrophosphate, dodecyl dimethyl ammonium chloride sequentially added into reactor,
After stirring 30min, 33 DEG C are gradually heating to 5 DEG C/min；
S2：Nonylpenol polyoxyethyene ether and n-butanol are added in whipping process, after adding distilled water, with 5 DEG C/min
45 DEG C are gradually heating to, 30min is stirred；
S3：2h is incubated after stopping stirring, room temperature is cooled to and is obtained final product this product A.
The mixing speed of reactor is 300r/min.
Embodiment 2
A kind of cleaning agent for reverse osmosis membrane, component 5 parts of acid dimethyl sodium, tetrapotassium pyrophosphate 20 by weight
Part, 10 parts of dodecyl dimethyl ammonium chloride, 6 parts of nonylpenol polyoxyethyene ether, 4 parts of n-butanol and 55 parts of distilled water.
A kind of preparation method of cleaning agent for reverse osmosis membrane, method and step is as follows：
S1：During acid dimethyl sodium, tetrapotassium pyrophosphate, dodecyl dimethyl ammonium chloride sequentially added into reactor,
After stirring 30min, 35 DEG C are gradually heating to 5 DEG C/min；
S2：Nonylpenol polyoxyethyene ether and n-butanol are added in whipping process, after adding distilled water, with 5 DEG C/min
47 DEG C are gradually heating to, 30min is stirred；
S3：2.5h is incubated after stopping stirring, room temperature is cooled to and is obtained final product this product B.
The mixing speed of reactor is 350r/min.
Embodiment 3
A kind of cleaning agent for reverse osmosis membrane, component 8 parts of acid dimethyl sodium, tetrapotassium pyrophosphate 22 by weight
Part, 13 parts of dodecyl dimethyl ammonium chloride, 10 parts of nonylpenol polyoxyethyene ether, 6 parts of n-butanol and 65 parts of distilled water.
A kind of preparation method of cleaning agent for reverse osmosis membrane, method and step is as follows：
S1：During acid dimethyl sodium, tetrapotassium pyrophosphate, dodecyl dimethyl ammonium chloride sequentially added into reactor,
After stirring 30min, 37 DEG C are gradually heating to 5 DEG C/min；
S2：Nonylpenol polyoxyethyene ether and n-butanol are added in whipping process, after adding distilled water, with 5 DEG C/min
49 DEG C are gradually heating to, 30min is stirred；
S3：3h is incubated after stopping stirring, room temperature is cooled to and is obtained final product this product C.
The mixing speed of reactor is 400r/min.
Embodiment 4
A kind of cleaning agent for reverse osmosis membrane, component 4 parts of acid dimethyl sodium, tetrapotassium pyrophosphate 21 by weight
Part, 12 parts of dodecyl dimethyl ammonium chloride, 5 parts of nonylpenol polyoxyethyene ether, 3 parts of n-butanol and 50 parts of distilled water.
A kind of preparation method of cleaning agent for reverse osmosis membrane, method and step is as follows：
S1：During acid dimethyl sodium, tetrapotassium pyrophosphate, dodecyl dimethyl ammonium chloride sequentially added into reactor,
After stirring 30min, 36 DEG C are gradually heating to 5 DEG C/min；
S2：Nonylpenol polyoxyethyene ether and n-butanol are added in whipping process, after adding distilled water, with 5 DEG C/min
46 DEG C are gradually heating to, 30min is stirred；
S3：2h is incubated after stopping stirring, room temperature is cooled to and is obtained final product this product D.
The mixing speed of reactor is 300r/min.
Embodiment 5
A kind of cleaning agent for reverse osmosis membrane, component 6 parts of acid dimethyl sodium, tetrapotassium pyrophosphate 19 by weight
Part, 9 parts of dodecyl dimethyl ammonium chloride, 7 parts of nonylpenol polyoxyethyene ether, 5 parts of n-butanol and 60 parts of distilled water.
A kind of preparation method of cleaning agent for reverse osmosis membrane, method and step is as follows：
S1：During acid dimethyl sodium, tetrapotassium pyrophosphate, dodecyl dimethyl ammonium chloride sequentially added into reactor,
After stirring 30min, 34 DEG C are gradually heating to 5 DEG C/min；
S2：Nonylpenol polyoxyethyene ether and n-butanol are added in whipping process, after adding distilled water, with 5 DEG C/min
48 DEG C are gradually heating to, 30min is stirred；
S3：3h is incubated after stopping stirring, room temperature is cooled to and is obtained final product this product E.
The mixing speed of reactor is 400r/min.
Properties of product are tested
The counter-infiltration membrane blocked up by dirt in same system is taken, at identical conditions, two systems are tested simultaneously, led to
The step of over cleaning, immersion, cleaning, flushing, cleans to it, adds commercially available counter-infiltration Special cleaning in cleaning process respectively
Agent and this product.
Test result indicate that：In process of the test, by the cleaning to counter-infiltration membrane, recover membrane, be put into reverse osmosis
Effect of this product than commercially available counter-infiltration scavenger specially can be seen that by the situation of salt rejection rate, pressure difference, producing water ratio in permeable system
It is more apparent, counter-infiltration system normal operation.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technology according to the present invention scheme and its
Inventive concept is subject to equivalent or change, should all be included within the scope of the present invention.
Claims (6)
1. a kind of cleaning agent for reverse osmosis membrane, it is characterised in that component is acid dimethyl sodium, tetrapotassium pyrophosphate, nonyl
Base phenol Ethoxylate, n-butanol and distilled water.
2. a kind of cleaning agent for reverse osmosis membrane according to claim 1, it is characterised in that the composition by weight
For 3-8 parts, tetrapotassium pyrophosphate 18-22 parts, nonylpenol polyoxyethyene ether 3-10 parts, n-butanol 2-6 parts of acid dimethyl sodium and
Distilled water 45-65 parts.
3. a kind of cleaning agent for reverse osmosis membrane according to claim 1, it is characterised in that the component also includes ten
Dialkyl dimethyl ammonium chloride, parts by weight are 8-13 parts.
4. a kind of cleaning agent for reverse osmosis membrane according to claims 1 to 3, it is characterised in that the component is by weight
5 parts of amount part meter acid dimethyl sodium, 20 parts of tetrapotassium pyrophosphate, 10 parts of dodecyl dimethyl ammonium chloride, nonyl phenol polychlorostyrene second
55 parts of 6 parts of alkene ether, n-butanol 4 and distilled water.
5. a kind of preparation method of the cleaning agent for reverse osmosis membrane according to any one of claims 1 to 3, its feature exists
In method and step is as follows：
S1：During acid dimethyl sodium, tetrapotassium pyrophosphate, dodecyl dimethyl ammonium chloride sequentially added into reactor, stirring
After 30min, 33-37 DEG C is gradually heating to 5 DEG C/min；
S2：Nonylpenol polyoxyethyene ether and n-butanol are added in whipping process, after adding distilled water, with 5 DEG C/min gradually
45-49 DEG C is warming up to, 30min is stirred；
S3：2-3h is incubated after stopping stirring, room temperature is cooled to and is obtained final product this product.
6. the preparation method of a kind of cleaning agent for reverse osmosis membrane according to claim 5, it is characterised in that described anti-
The mixing speed for answering kettle is 300-400r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611200640.2A CN106799168A (en) | 2016-12-22 | 2016-12-22 | A kind of cleaning agent for reverse osmosis membrane |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611200640.2A CN106799168A (en) | 2016-12-22 | 2016-12-22 | A kind of cleaning agent for reverse osmosis membrane |
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| Publication Number | Publication Date |
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| CN106799168A true CN106799168A (en) | 2017-06-06 |
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| CN201611200640.2A Pending CN106799168A (en) | 2016-12-22 | 2016-12-22 | A kind of cleaning agent for reverse osmosis membrane |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101254411A (en) * | 2007-12-12 | 2008-09-03 | 沈阳晟豪化工有限公司 | Alkaline hyperfiltration membrane cleaning agent |
| CN103521080A (en) * | 2013-10-10 | 2014-01-22 | 云南城投碧水源水务科技有限责任公司 | Alkaline cleaning agent for depth cleaning of separating membrane and application thereof |
| CN104624058A (en) * | 2013-11-09 | 2015-05-20 | 西安润达化工科技有限公司 | Reverse osmosis dedicated alkaline detergent |
| CN105709605A (en) * | 2015-08-13 | 2016-06-29 | 常州联江环保科技有限公司 | Alkaline cleaning agent and bactericide applicable to ultra-filtration membranes or reverse osmosis membranes |
-
2016
- 2016-12-22 CN CN201611200640.2A patent/CN106799168A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101254411A (en) * | 2007-12-12 | 2008-09-03 | 沈阳晟豪化工有限公司 | Alkaline hyperfiltration membrane cleaning agent |
| CN103521080A (en) * | 2013-10-10 | 2014-01-22 | 云南城投碧水源水务科技有限责任公司 | Alkaline cleaning agent for depth cleaning of separating membrane and application thereof |
| CN104624058A (en) * | 2013-11-09 | 2015-05-20 | 西安润达化工科技有限公司 | Reverse osmosis dedicated alkaline detergent |
| CN105709605A (en) * | 2015-08-13 | 2016-06-29 | 常州联江环保科技有限公司 | Alkaline cleaning agent and bactericide applicable to ultra-filtration membranes or reverse osmosis membranes |
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| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 830013 Urumqi high tech Zone (new city) North Industrial Park, blue sky road, No. 216, No. Applicant after: De blue water technology, Limited by Share Ltd Address before: 830013 Urumqi high tech Zone (new city) North Industrial Park, blue sky road, No. 216, No. Applicant before: Xinjiang Delan Co., Ltd. |
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Application publication date: 20170606 |
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| RJ01 | Rejection of invention patent application after publication |