CN102068909A - Inorganic protective agent for ultrafiltration membrane component and application method thereof - Google Patents
Inorganic protective agent for ultrafiltration membrane component and application method thereof Download PDFInfo
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- CN102068909A CN102068909A CN 201010606691 CN201010606691A CN102068909A CN 102068909 A CN102068909 A CN 102068909A CN 201010606691 CN201010606691 CN 201010606691 CN 201010606691 A CN201010606691 A CN 201010606691A CN 102068909 A CN102068909 A CN 102068909A
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- protective agent
- membrane component
- inorganic protective
- ultrafiltration membrane
- membrane assembly
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Abstract
The invention discloses an inorganic protective agent for an ultrafiltration membrane component and an application method thereof. The inorganic protective agent is prepared from aqueous solution of calcium chloride at the mass concentration of 10 to 38 percent. The application method for the inorganic protective agent comprises the following steps of: arranging the ultrafiltration membrane component into the inorganic protective agent, impregnating the ultrafiltration membrane component for 8 to 24 hours, air-drying the impregnated ultrafiltration membrane component for 20 to 30 hours at room temperature, and sealing and storing the ultrafiltration membrane component. The inorganic protective agent is prepared from the readily-available aqueous solution of calcium chloride with low cost to protect the ultrafiltration membrane component so as to fulfill the aims of maintaining the flux of the membrane component and avoiding the growth of bacteria, and can be rapidly and completely flushed when the membrane component is used.
Description
Technical field:
The present invention relates to a kind of protective agent and application process of hyperfiltration membrane assembly, more particularly, relate to a kind of inorganic protective agent and application process thereof of hyperfiltration membrane assembly.Be mainly used in water purified treatment field.
Background technology:
Hollow-fibre membrane is mainly used in water treatment field, and membrane module is being produced, and brings into use to water inlet, generally has the time more than week to one year to be in transportation and stored condition.Hollow-fibre membrane generally is a macromolecular material, and its micropore is between the 0.01-0.1 micron.If the material absolutely dried condition, then macromolecular material micropore sealing makes the permanent water permeable ability that loses of film.And under general leather hard or full wet condition, grow microorganism again easily.Generally, be tending towards in the industry hollow fiber film assembly is made dry state, like this can weight reduction, conveniently transportation.
All the time, make the dry state film in the industry and all be to use organic protective agent, as glycerine, surfactant.Though organic protective agent can play the effect of the flux of well preserving moisture, membrane module unavoidably exists organic residual after use.Because the strong compatibility between organic matter and the film can't be rinsed it well after the preparation in a short time, causes producing the water oxygen demand and exceeds standard.
The inorganic protective agent that uses in the industry has sodium pyrosulfite, but sodium pyrosulfite can generate hydrogen sulfide and sulfur dioxide after decomposing, and produces stink and toxicity.
Summary of the invention
The present invention is for after solving existing hyperfiltration membrane assembly use organic protective agent; exist organic residual; cause producing the water oxygen demand exceed standard and use inorganic protective agent to have sodium pyrosulfite to decompose after can generate hydrogen sulfide and sulfur dioxide; and the technical problem of generation stink and toxicity provides a kind of safety and environmental protection and protects inorganic protective agent of effective hyperfiltration membrane assembly and application process thereof.
This inorganic protective agent is that the calcium chloride water of 10%-38% makes by mass concentration.Adopt calcium chloride water that membrane module is carried out protection.
This inorganic protectant application process, realize by following step:
Soaking step is inserted hyperfiltration membrane assembly in the inorganic protective agent of calcium chloride water that mass concentration is 10%-38% and was soaked 8-24 hour;
Dry the hyperfiltration membrane assembly after step will be soaked, at room temperature dried 20-30 hour.
Characteristics of the present invention and beneficial effect: the present invention carries out protection as inorganic protective agent to hyperfiltration membrane assembly by adopting calcium chloride water cheap and easy to get, can reach the purpose that keeps the membrane module flux and avoid breed bacteria.Be a kind of safety and environmental protection, the effective inorganic protective agent of protection.The application simple operations is convenient, and is practical.
The specific embodiment:
The inorganic protective agent of a kind of hyperfiltration membrane assembly is that the calcium chloride water of 10%-38% makes by mass concentration.
A kind of inorganic protectant application process of hyperfiltration membrane assembly, realize by following step:
Soaking step: hyperfiltration membrane assembly inserted in the inorganic protective agent of calcium chloride water that mass concentration is 10%-38% soaked 8-24 hour;
Dry step: the hyperfiltration membrane assembly after will soaking, at room temperature dried 20-30 hour.
Preserve step: the hyperfiltration membrane assembly after drying is carried out vacuum cross to mould and pack.
In order to make purpose of the present invention, technical scheme and advantage clearer, now describe the present invention in conjunction with specific embodiments:
In the following example, adopt mass concentration be the calcium chloride water of 10%-38% as inorganic protective agent, and hyperfiltration membrane assembly inserted in the inorganic protective agent soaked 8-24 hour; Hyperfiltration membrane assembly after will soaking subsequently at room temperature dried 20-30 hour; And the hyperfiltration membrane assembly after drying is carried out vacuum cross to mould and pack.
Embodiment 1
In tank, add ultrafiltration water, add calcium chloride according to mass concentration ratio 33% again, stir; After the cooling, put into hollow fiber ultrafiltration membrane, soaked 8 hours, take out and dried plastic sealing pack 24 hours.
Embodiment 2
In tank, add ultrafiltration water, add calcium chloride according to mass concentration ratio 10% again, stir; After the cooling, put into hollow fiber ultrafiltration membrane, soaked 24 hours, take out and dried plastic sealing pack 30 hours.
Embodiment 3
In tank, add ultrafiltration water, add calcium chloride according to mass concentration ratio 38% again, stir; After the cooling, put into hollow fiber ultrafiltration membrane, soaked 20 hours, take out and dried plastic sealing pack 20 hours.
Experimental result:
After 6 months, under 25 ℃ of water temperature conditions, adopt the water flux of ultrafiltration water test hollow fiber hyperfiltration membrane assembly, and detect the bacterial number of membrane module water outlet, result such as following table.
By observing, hollow fiber film assembly is stored does not as can be known have the proterties variation in two years.This is because in dry process, calcium chloride can become the crystalline hydrate molecule in conjunction with water, retains in the micropore of film, plays the effect that micropore does not subside of supporting of filling.Simultaneously, the calcium chloride of higher concentration is strong microbial inhibitor, after the surface of film (comprising the membrane pores inner surface) has retained calcium chloride, can not grow microorganism for a long time, and have the effect of preserving moisture.When opening the membrane module that uses storage, because calcium chloride is ionic compound, negative ions has very strong water-soluble, only needs a water just can rinse well, do not have the residual of calcium chloride or other impurity, make the hollow fiber film assembly of storing with the present invention can be used in the drinking water treatment field.In the present invention, calcium chloride concentration is if cross the low double effects that then do not have, and Ruo Taigao then can increase washing water quantity and increase cost.Therefore, concentration range 10%-38% provided by the invention is an optimum concentration range.
The present invention is described according to specific embodiment, but it will be understood by those skilled in the art that when not breaking away from the scope of application of the present invention, can carry out various variations and be equal to replacement.In addition, for adapting to the requirement of the technology of the present invention specific occasion or material, can carry out many modifications and not break away from its protection domain the present invention.Therefore, the present invention is not limited to specific embodiment disclosed herein and uses, and relates to the embodiment that all drop into the claim protection domain.
Claims (3)
1. the inorganic protective agent of a hyperfiltration membrane assembly is that the calcium chloride water of 10%-38% makes by mass concentration.
2. inorganic protectant application process of a hyperfiltration membrane assembly, realize by following step:
Soaking step is inserted hyperfiltration membrane assembly in the inorganic protective agent of calcium chloride water that mass concentration is 10%-38% and was soaked 8-24 hour;
Dry the hyperfiltration membrane assembly after step will be soaked, at room temperature dried 20-30 hour.
3. inorganic protectant application process of a kind of hyperfiltration membrane assembly according to claim 2, it is characterized in that: this method also comprises the preservation step, the hyperfiltration membrane assembly after drying is carried out vacuum cross to mould and pack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010606691 CN102068909A (en) | 2010-12-27 | 2010-12-27 | Inorganic protective agent for ultrafiltration membrane component and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010606691 CN102068909A (en) | 2010-12-27 | 2010-12-27 | Inorganic protective agent for ultrafiltration membrane component and application method thereof |
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| Publication Number | Publication Date |
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| CN102068909A true CN102068909A (en) | 2011-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010606691 Pending CN102068909A (en) | 2010-12-27 | 2010-12-27 | Inorganic protective agent for ultrafiltration membrane component and application method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102698605A (en) * | 2012-06-06 | 2012-10-03 | 山东招金膜天有限责任公司 | Dry-state preservation method for ultra-filtration membrane component |
| CN103463982A (en) * | 2013-10-12 | 2013-12-25 | 深圳市诚德来实业有限公司 | Preservation method of ultrafiltration membrane |
| CN103877859A (en) * | 2014-04-01 | 2014-06-25 | 武汉艾科滤膜技术有限公司 | Membrane component preservation method |
| CN109351194A (en) * | 2018-11-02 | 2019-02-19 | 苏州立升净水科技有限公司 | The method of the membrane flux of ultrafiltration membrane preservative agent and raising ultrafiltration membrane |
| CN112774452A (en) * | 2020-12-18 | 2021-05-11 | 武汉艾科滤膜技术有限公司 | Preservation method of ultrafiltration membrane component |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1054479A (en) * | 1991-03-10 | 1991-09-11 | 盖国成 | A kind of freezing proof technique of wet type gas holder |
| CN1354135A (en) * | 2000-11-16 | 2002-06-19 | 唐山三友志达钙业有限公司 | Non-scaling production method of calcium chloride by directly using waste liquor of ammonia-soda process and plate-type evaporator |
| WO2004089520A1 (en) * | 2003-04-10 | 2004-10-21 | X-Flow B.V. | A process for drying a wet porous membrane structure and the porous membrane structure obtained from said process |
-
2010
- 2010-12-27 CN CN 201010606691 patent/CN102068909A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1054479A (en) * | 1991-03-10 | 1991-09-11 | 盖国成 | A kind of freezing proof technique of wet type gas holder |
| CN1354135A (en) * | 2000-11-16 | 2002-06-19 | 唐山三友志达钙业有限公司 | Non-scaling production method of calcium chloride by directly using waste liquor of ammonia-soda process and plate-type evaporator |
| WO2004089520A1 (en) * | 2003-04-10 | 2004-10-21 | X-Flow B.V. | A process for drying a wet porous membrane structure and the porous membrane structure obtained from said process |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102698605A (en) * | 2012-06-06 | 2012-10-03 | 山东招金膜天有限责任公司 | Dry-state preservation method for ultra-filtration membrane component |
| CN103463982A (en) * | 2013-10-12 | 2013-12-25 | 深圳市诚德来实业有限公司 | Preservation method of ultrafiltration membrane |
| CN103877859A (en) * | 2014-04-01 | 2014-06-25 | 武汉艾科滤膜技术有限公司 | Membrane component preservation method |
| CN109351194A (en) * | 2018-11-02 | 2019-02-19 | 苏州立升净水科技有限公司 | The method of the membrane flux of ultrafiltration membrane preservative agent and raising ultrafiltration membrane |
| CN109351194B (en) * | 2018-11-02 | 2021-08-06 | 苏州立升净水科技有限公司 | Ultrafiltration membrane preservative and method for improving membrane flux of ultrafiltration membrane |
| CN112774452A (en) * | 2020-12-18 | 2021-05-11 | 武汉艾科滤膜技术有限公司 | Preservation method of ultrafiltration membrane component |
| CN112774452B (en) * | 2020-12-18 | 2022-04-22 | 武汉艾科滤膜技术有限公司 | Preservation method of ultrafiltration membrane component |
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Application publication date: 20110525 |