CN103551045B - A kind of Dye determination method of oxidization condition of reverse osmosis membrane - Google Patents
A kind of Dye determination method of oxidization condition of reverse osmosis membrane Download PDFInfo
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- CN103551045B CN103551045B CN201310556628.5A CN201310556628A CN103551045B CN 103551045 B CN103551045 B CN 103551045B CN 201310556628 A CN201310556628 A CN 201310556628A CN 103551045 B CN103551045 B CN 103551045B
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- reverse osmosis
- osmosis membrane
- dyestuff
- dye solution
- oxidization condition
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- 239000012528 membrane Substances 0.000 title claims abstract description 66
- 238000001223 reverse osmosis Methods 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 21
- 239000000975 dye Substances 0.000 claims abstract description 44
- 238000010612 desalination reaction Methods 0.000 claims abstract description 12
- 239000002904 solvent Substances 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 7
- KJFMBFZCATUALV-UHFFFAOYSA-N phenolphthalein Chemical compound C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)C2=CC=CC=C2C(=O)O1 KJFMBFZCATUALV-UHFFFAOYSA-N 0.000 claims description 4
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 claims description 3
- 229940043267 rhodamine b Drugs 0.000 claims description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims description 2
- SXYCCJAPZKHOLS-UHFFFAOYSA-N chembl2008674 Chemical compound [O-][N+](=O)C1=CC=C2C(N=NC3=C4C=CC=CC4=CC=C3O)=C(O)C=C(S(O)(=O)=O)C2=C1 SXYCCJAPZKHOLS-UHFFFAOYSA-N 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 239000011651 chromium Substances 0.000 claims description 2
- STZCRXQWRGQSJD-GEEYTBSJSA-M methyl orange Chemical compound [Na+].C1=CC(N(C)C)=CC=C1\N=N\C1=CC=C(S([O-])(=O)=O)C=C1 STZCRXQWRGQSJD-GEEYTBSJSA-M 0.000 claims description 2
- 229940012189 methyl orange Drugs 0.000 claims description 2
- 229960005382 phenolphthalein Drugs 0.000 claims 1
- 238000005516 engineering process Methods 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000013535 sea water Substances 0.000 description 3
- 239000010842 industrial wastewater Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 235000019441 ethanol Nutrition 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 238000010525 oxidative degradation reaction Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
Abstract
The invention provides a kind of Dye determination method of oxidization condition of reverse osmosis membrane.The method is the method adopting the oxidization condition of dyestuff to reverse osmosis membrane to judge, the method comprises the following steps: dyestuff and solvent are mixed to get dye solution, appropriate dye solution is dropped in the surface of reverse osmosis membrane to be detected; If there is coloured region, illustrate that the desalination layer of reverse osmosis membrane is damaged; If dyestuff is not adsorbed in the surface of reverse osmosis membrane, illustrate that the desalination layer of reverse osmosis membrane is intact.Adopt method of the present invention whether can there is damage to reverse osmosis membrane rapidly and accurately to judge, be convenient to carry out preliminary assessment and judgement to the oxidization condition of reverse osmosis membrane, there is the advantages such as cost is low, simple to operate, result is accurate.
Description
Technical field
The present invention relates to a kind of Dye determination method of oxidization condition of reverse osmosis membrane, belong to water-treatment technology field.
Background technology
Thermal power plant be industrial enterprise use water rich and influential family, every day all will consume a large amount of water resources, produces a large amount of industrial wastewaters simultaneously, therefore, adopts reasonable, advanced water technology, realize Sewage treatment utilize, significant to environmental protection.Reverse osmosis membrane separation technology because having without phase transformation, there is not chemical change, modularization, the many merits such as flow process is simple, easy to operate, floor space is little, reduced investment, power consumption are low, obtain applying more and more widely in the thermal power plant of China from 20th century the mid-80s, be mainly used in the recycling and Coastal Power Plant seawater desalination system etc. of power plant boiler makeup Water System, circulating sewage (industrial wastewater) at present.
Because the particularity of membrane material and the development of reverse osmosis technology limit, because the reasons such as design, operation, misoperation easily cause reverse osmosis membrane system oxidative degradation and serious dirt to block up, this has become two large subject matters of membranous system.These problems can cause the decline of film processing system performance (salt rejection rate and aquifer yield), the rising of membrane module inlet outlet pressure differential, the reduction of production efficiency, and irregular stoppage in transit can be caused, the series of problems such as Frequent Accidents, membrane module are often changed, the increase of operation expense.
The reverse osmosis membrane processing project of the multiple power plant of recent year be in operation occurred film oxidation and dirt block up etc. serious problems.When Datang Wang Tan power plant seawater desalination system ran more than 3 years, seawater reverse osmosis membrane, milipore filter there occurs serious oxidation and dirt is blocked up, and the service life of film shortens, and frequent membrane module of changing has increased the weight of economy of power plant burden.For ensureing power plant safety, stable, economic operation, the research that the film oxidation produce power plant's reverse osmosis water treatment system and dirt such as to block up at the problem is extremely urgent.
Summary of the invention
For solving the problems of the technologies described above, the object of the present invention is to provide a kind of Dye determination method of oxidization condition of reverse osmosis membrane, it is the method adopting the oxidization condition of dyestuff to reverse osmosis membrane to judge, has simple to operate, result feature accurately.
For achieving the above object, the invention provides a kind of Dye determination method of oxidization condition of reverse osmosis membrane, it is the method adopting the oxidization condition of dyestuff to reverse osmosis membrane to judge, the method comprises the following steps:
Dyestuff and solvent are mixed to get dye solution, appropriate dye solution are dropped in the surface of reverse osmosis membrane to be detected;
If there is coloured region, illustrate that the desalination layer of reverse osmosis membrane is oxidized;
If dyestuff is not adsorbed in the surface of reverse osmosis membrane, illustrate that the desalination layer of reverse osmosis membrane is not oxidized.
In the methods described above, preferably, the solvent adopted is demineralized water and absolute ethyl alcohol.The use of solvent mainly prepares dye solution, and drop in reverse osmosis membrane surface to enable dyestuff and have the mobility of appropriateness, the consumption for demineralized water and absolute ethyl alcohol can control as required, and the composition of solvent does not have substantial effect for judgement.
In the methods described above, preferably, the concentration of the dye solution adopted is 1wt%-10wt%; Be more preferably 3wt%-6wt%; Be more preferably 5wt%.
In the methods described above, preferably, the amount dropping in the dye solution on reverse osmosis membrane surface to be detected is that 1-3 drips.
In the above-mentioned methods, coloured region appears in the reverse side of reverse osmosis membrane, adopts during different dyestuffs and there will be different colors, there will be redness when adopting rhodamine B, adopts phenolphthalein to there will be redness, adopts methyl orange there will be orange red to orange-yellow; Acid chromium blue k and eriochrome black T is adopted to there will be bluish violet, navy blue.
When judging, dye solution only needs a part of region dropping in reverse osmosis membrane.If reverse osmosis membrane is oxidized, dyestuff can penetrate film, and reverse side there will be corresponding color.If reverse osmosis membrane is not oxidized, dyestuff will stay the top layer of titration, can not permeate, and also would not occur coloured region.
Adopt method of the present invention whether can there is damage to reverse osmosis membrane rapidly and accurately to judge, be convenient to carry out preliminary assessment and judgement to the oxidization condition of reverse osmosis membrane, there is the advantages such as cost is low, simple to operate, result is accurate.
Accompanying drawing explanation
Fig. 1 a and Fig. 1 b is respectively the photo in new reverse osmosis membrane and seriously polluted and oxidized reverse osmosis membrane front in embodiment 1;
Fig. 2 a and Fig. 2 b is respectively the photo of new reverse osmosis membrane and seriously polluted and oxidized reverse osmosis membrane reverse side in embodiment 1.
Detailed description of the invention
In order to there be understanding clearly to technical characteristic of the present invention, object and beneficial effect, existing following detailed description is carried out to technical scheme of the present invention, but can not be interpreted as to of the present invention can the restriction of practical range.
Embodiment 1
Present embodiments provide a kind of Dye determination method of oxidization condition of reverse osmosis membrane, it comprises the following steps:
A small amount of dye solution is dropped in new reverse osmosis membrane and seriously polluted and oxidized reverse osmosis membrane (being the SW30HRLE-400i type reverse osmosis membrane that Dow Chemical company produces) surface, this dye solution is by rhodamine B and solvent composition, wherein, solvent is demineralized water and ethanol, and concentration is 5wt%;
If the desalination layer on film surface exists damage, the supporting layer of membrane material will come out, and a part of dyestuff is by the supporting layer of rapid osmotic to membrane material, and this part be damaged will take on a red color;
If the desalination layer on film surface is intact, this dyestuff will not be adsorbed in film on the surface.
Carry out oxidation according to above-mentioned steps to new reverse osmosis membrane and seriously polluted and oxidized reverse osmosis membrane to judge, result is respectively shown in Fig. 1 a, Fig. 1 b, Fig. 2 a, Fig. 2 b, wherein, Fig. 1 a and Fig. 1 b is respectively the photo in new reverse osmosis membrane and seriously polluted and oxidized reverse osmosis membrane front in embodiment 1; Fig. 2 a and Fig. 2 b is respectively the photo of new reverse osmosis membrane and seriously polluted and oxidized reverse osmosis membrane reverse side in embodiment 1.
As can be seen from Fig. 1 a, Fig. 1 b, dyestuff penetrates seriously polluted and oxidized reverse osmosis membrane completely, and area coverage is larger, and substantially circularly to disperse out, present redness, illustrate that this reverse osmosis membrane is really oxidized, surperficial desalination layer is seriously damaged;
As can be seen from Fig. 2 a, Fig. 2 b, dyestuff is not completely through new reverse osmosis membrane, and this also illustrates this reverse osmosis membrane surface desalination layer does not have oxidized, do not destroyed, this and this reverse osmosis membrane are new diaphragm, the not oxidized fact is consistent.
Clearly can find out that the actual conditions of result and the diaphragm adopting the method for the present embodiment to utilize the oxidization condition of dyestuff to reverse osmosis membrane to detect fit like a glove from result of the test, and test simple, workable.The method is applicable to the judgement whether be oxidized diaphragm separating layer.
Claims (3)
1. a Dye determination method for the oxidization condition of reverse osmosis membrane, it is the method adopting the oxidization condition of dyestuff to reverse osmosis membrane to judge, the method comprises the following steps:
Dyestuff and solvent are mixed to get dye solution, appropriate dye solution are dropped in the surface of reverse osmosis membrane to be detected;
If there is coloured region, illustrate that the desalination layer of reverse osmosis membrane is oxidized;
If dyestuff is not adsorbed in the surface of reverse osmosis membrane, illustrate that the desalination layer of reverse osmosis membrane is not oxidized;
Described solvent is demineralized water and ethanol;
Described dyestuff comprises the combination of one or more in rhodamine B, phenolphthalein, methyl orange, acid chromium blue k and eriochrome black T;
The concentration of described dye solution is 1wt% to 10wt%;
The amount dropping in the dye solution on reverse osmosis membrane surface to be detected is that 1-3 drips.
2. the Dye determination method of the oxidization condition of reverse osmosis membrane according to claim 1, wherein, the concentration of described dye solution is 3wt% to 6wt%.
3. the Dye determination method of the oxidization condition of reverse osmosis membrane according to claim 2, wherein, the concentration of described dye solution is 5wt%.
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| CN201310556628.5A CN103551045B (en) | 2013-11-11 | 2013-11-11 | A kind of Dye determination method of oxidization condition of reverse osmosis membrane |
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| CN201310556628.5A CN103551045B (en) | 2013-11-11 | 2013-11-11 | A kind of Dye determination method of oxidization condition of reverse osmosis membrane |
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| CN103551045A CN103551045A (en) | 2014-02-05 |
| CN103551045B true CN103551045B (en) | 2016-03-16 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104399374B (en) * | 2014-11-25 | 2016-08-17 | 贵阳时代沃顿科技有限公司 | A kind of method detecting complex reverse osmosis membrane desalination layer integrity and detection device thereof |
| CN108489895A (en) * | 2018-03-20 | 2018-09-04 | 时代沃顿科技有限公司 | A kind of detection method and detecting instrument for the anti-wiping property value of reverse osmosis membrane |
| CN109884076A (en) * | 2019-04-03 | 2019-06-14 | 吉安加仑膜环保科技股份有限公司 | A method of analysis reverse osmosis membrane salt rejection rate performance |
| CN112337314B (en) * | 2020-10-23 | 2022-04-29 | 湖南沁森高科新材料有限公司 | Method for identifying oxidized polyamide membrane |
| WO2022203078A1 (en) * | 2021-03-26 | 2022-09-29 | 東レ株式会社 | Method for inspecting damage in reverse osmosis membrane |
| EP4316631A1 (en) * | 2021-03-26 | 2024-02-07 | Toray Industries, Inc. | Method for inspecting damage in reverse osmosis membrane |
Citations (5)
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|---|---|---|---|---|
| GB1389766A (en) * | 1972-03-06 | 1975-04-09 | Baxter Laboratories Inc | Method and apparatus for testing membrane strips for holes |
| JPH06254358A (en) * | 1993-03-03 | 1994-09-13 | Toyobo Co Ltd | Detection of defect of reverse osmosis membrane |
| CN1685060A (en) * | 2002-07-23 | 2005-10-19 | 纳尔科公司 | Method of monitoring biofouling in membrane separation systems |
| KR20110066376A (en) * | 2009-12-11 | 2011-06-17 | 코오롱건설주식회사 | The method for searching defects of hollow fibers-membranes |
| WO2013110458A1 (en) * | 2012-01-27 | 2013-08-01 | Sartorius Stedim Biotech Gmbh | Method for demonstrating flaws in an ultrafiltration membrane |
-
2013
- 2013-11-11 CN CN201310556628.5A patent/CN103551045B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1389766A (en) * | 1972-03-06 | 1975-04-09 | Baxter Laboratories Inc | Method and apparatus for testing membrane strips for holes |
| JPH06254358A (en) * | 1993-03-03 | 1994-09-13 | Toyobo Co Ltd | Detection of defect of reverse osmosis membrane |
| CN1685060A (en) * | 2002-07-23 | 2005-10-19 | 纳尔科公司 | Method of monitoring biofouling in membrane separation systems |
| KR20110066376A (en) * | 2009-12-11 | 2011-06-17 | 코오롱건설주식회사 | The method for searching defects of hollow fibers-membranes |
| WO2013110458A1 (en) * | 2012-01-27 | 2013-08-01 | Sartorius Stedim Biotech Gmbh | Method for demonstrating flaws in an ultrafiltration membrane |
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| CN103551045A (en) | 2014-02-05 |
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