CN114713031A - Reverse osmosis membrane layer assembly and reverse osmosis membrane element resistant to high COD and impurity pollution - Google Patents
Reverse osmosis membrane layer assembly and reverse osmosis membrane element resistant to high COD and impurity pollution Download PDFInfo
- Publication number
- CN114713031A CN114713031A CN202210410638.7A CN202210410638A CN114713031A CN 114713031 A CN114713031 A CN 114713031A CN 202210410638 A CN202210410638 A CN 202210410638A CN 114713031 A CN114713031 A CN 114713031A
- Authority
- CN
- China
- Prior art keywords
- reverse osmosis
- osmosis membrane
- membrane
- layer
- membrane layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000012528 membrane Substances 0.000 title claims abstract description 157
- 238000001223 reverse osmosis Methods 0.000 title claims abstract description 72
- 239000012535 impurity Substances 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 57
- 239000011248 coating agent Substances 0.000 claims abstract description 29
- 238000000576 coating method Methods 0.000 claims abstract description 29
- 238000011109 contamination Methods 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 abstract description 13
- 239000003344 environmental pollutant Substances 0.000 abstract description 12
- 231100000719 pollutant Toxicity 0.000 abstract description 12
- 239000000126 substance Substances 0.000 abstract description 12
- 238000010612 desalination reaction Methods 0.000 abstract description 4
- 230000004907 flux Effects 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 48
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 description 8
- NRTLIYOWLVMQBO-UHFFFAOYSA-N 5-chloro-1,3-dimethyl-N-(1,1,3-trimethyl-1,3-dihydro-2-benzofuran-4-yl)pyrazole-4-carboxamide Chemical compound C=12C(C)OC(C)(C)C2=CC=CC=1NC(=O)C=1C(C)=NN(C)C=1Cl NRTLIYOWLVMQBO-UHFFFAOYSA-N 0.000 description 4
- 230000002209 hydrophobic effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 102000004169 proteins and genes Human genes 0.000 description 3
- 108090000623 proteins and genes Proteins 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- -1 organic matters Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/025—Reverse osmosis; Hyperfiltration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/08—Apparatus therefor
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/36—Hydrophilic membranes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- 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 discloses a reverse osmosis membrane component and a reverse osmosis membrane element resistant to high COD and impurity pollution, which comprise a filter membrane layer, wherein the filter membrane layer is provided with at least one concave-convex surface, the concave-convex surface of the filter membrane layer is coated with a leveling coating, the end surface of one side, away from the concave-convex surface, of the leveling coating is a smooth surface, and the leveling coating is a hydrophilic coating. The technical problems that the adaptability of a common anti-pollution membrane to poor water quality is low, pollutants are easy to adhere to diamond-shaped flow channels in the membrane, the membrane flux and the desalination rate of the common anti-pollution membrane are fast to attenuate, the membrane pressure difference rises fast, chemical cleaning is frequent, operation is complex, the service life of the membrane is shortened, and the cost is increased in the prior art are solved.
Description
Technical Field
The invention relates to the technical field of reverse osmosis water purification treatment, in particular to a reverse osmosis membrane layer assembly and a reverse osmosis membrane element for resisting high COD (chemical oxygen demand) and impurity pollution.
Background
The reverse osmosis membrane element is a common element in water treatment technology, and generally comprises a central flow guide pipe and reverse osmosis membrane groups wound outside the central flow guide pipe and alternately stacked as shown in fig. 1. When the reverse osmosis membrane element is used, raw water enters the reverse osmosis membrane element from the outside, under the action of the water delivery pressure, a part of raw water is acted by the reverse osmosis membrane group to form water with lower concentration, enters the central flow guide pipe and then flows out from the end part of the central flow guide pipe, the part of water is called produced water or pure water, and the other part of water flows out from one end of the reverse osmosis membrane group outside the central flow guide pipe and is called waste water or concentrated water.
The reverse osmosis membrane element in the prior art mainly comprises a common brackish water membrane, a common anti-pollution membrane, a low-pressure membrane, a high-desalination-rate membrane and the like. The traditional common anti-pollution membrane has the defects that the adaptability to poor water quality is low, when the membrane is used under the poor water quality, the attenuation of membrane flux and desalination rate is fast, the rapid rise of membrane pressure difference causes frequent chemical cleaning, the cleaning period is 7-15 days, the worst cleaning even needs 2-3 days, the frequent chemical cleaning causes the membrane desalination rate to be fast reduced until a membrane element is replaced, the service life of the membrane under the poor water quality is only 1-2 years, the expensive replacement cost of the membrane element greatly improves the production and operation cost, and the economy is poor.
Meanwhile, the flow channels used in the reverse osmosis membrane group are all rhombic flow channels, raw water can form a karman vortex street flow direction which enables pollutants to be more easily attached when passing through the rhombic flow channels, the existing method for improving the anti-pollution performance is generally realized by widening the rhombic flow channels, but the improvement effect on the chemical cleaning problem caused by the rise of the flow channel pollution blocking pressure difference in the reverse osmosis membrane group is still limited, and the service life of the membrane cannot be greatly prolonged.
Disclosure of Invention
Therefore, the invention provides a reverse osmosis membrane layer assembly and a reverse osmosis membrane element with high COD (chemical oxygen demand) and impurity pollution resistance, and aims to solve the technical problems that the common anti-pollution membrane in the prior art has low adaptability to poor water quality, and pollutants are easy to adhere to diamond-shaped flow channels in the membrane, so that the membrane flux and the desalination rate of the common anti-pollution membrane are quickly attenuated, the membrane pressure difference quickly rises, chemical cleaning is frequent, the operation is complicated, the service life of the membrane is shortened, and the cost is increased.
In order to achieve the above purpose, the invention provides the following technical scheme:
the utility model provides a reverse osmosis membrane layer subassembly, includes the filter membrane layer, the filter membrane layer has at least one concave-convex face, the concave-convex face coating of filter membrane layer has the coating of making level, the coating of making level is deviating from the one side of concave-convex face is smooth face, just the coating of making level is hydrophilic coating.
On the basis of the above technical solution, the present invention is further explained as follows:
as a further aspect of the present invention, the hydrophilic coating has a hydroxyl group and/or a carboxyl group.
As a further scheme of the invention, the filter membrane further comprises a diversion net layer positioned adjacent to the filter membrane layer.
The diversion net layer is provided with an open type flow passage.
As a further aspect of the present invention, the anti-pollution flow channel width of the open flow channel is not less than 34 mil.
As a further scheme of the invention, a plurality of salient points are arranged on the side end surface of the diversion net layer, and the diversion net layer forms a plurality of open flow channels along the water inlet and outlet direction of the diversion net layer through the contact support between the salient points and the membrane surface of the filter membrane layer.
The utility model provides an anti high COD and impurity contamination's reverse osmosis membrane component, includes central honeycomb duct and reverse osmosis membrane group, reverse osmosis membrane group includes foretell reverse osmosis membrane layer subassembly.
The reverse osmosis membrane layer assembly is arranged on the outer side of the central flow guide pipe, and the central flow guide pipe is communicated with the reverse osmosis membrane layer assembly.
As a further aspect of the present invention, the central flow guiding pipe has a pipe extending direction, and two ends of the central flow guiding pipe along the pipe extending direction form a pure water outlet respectively.
The reverse osmosis membrane group is wound on the outer side of the central flow guide pipe, and the two end parts of the reverse osmosis membrane group corresponding to the central flow guide pipe respectively form a raw water inlet end and a concentrated water outlet end in a one-to-one correspondence mode.
As a further scheme of the invention, the pipe wall of the central flow guide pipe is provided with a plurality of limber holes, and the central flow guide pipe and the reverse osmosis membrane layer component are communicated through the plurality of limber holes.
As a further scheme of the invention, the reverse osmosis membrane module also comprises an outer shell layer and a penetrating fluid collecting layer which is positioned on the inner side of the outer shell layer and is alternately laminated with the reverse osmosis membrane module.
The invention has the following beneficial effects:
the device can improve the internal components of the reverse osmosis membrane group on the basis of the anti-pollution membrane, firstly, an open wide flow channel technology is utilized, a rhombic flow channel which is easy to attach pollutants and is formed in the karman vortex street flow direction is changed into an open wide flow channel, and the pollutants are easy to flow away along with the concentrated water to reduce the pollution to the membrane; the two-way membrane surface coating technology is adopted, so that on one hand, the original hill-type uneven membrane surface is smoother, pollutants which are easy to embed into depressions on the membrane surface are improved, and on the other hand, the membrane performance of the smooth membrane surface is easier to recover after chemical cleaning; and thirdly, through a coating hydrophilic material technology, the original membrane surface has better hydrophilicity, and hydrophobic pollutants such as protein and the like are easier to flow away along with concentrated water. The pollution resistance of the reverse osmosis membrane is effectively improved by changing the components in the reverse osmosis membrane group, the cleaning period and the service life of the membrane are greatly prolonged, and the production and operation cost caused by frequent replacement of membrane elements is obviously reduced.
Drawings
In order to clearly illustrate the embodiments or technical solutions of the present invention, the drawings used in the embodiments or technical descriptions will be briefly introduced, and the structures, proportions, sizes, etc. shown in the description are only used for matching with the disclosure content of the specification, so that those skilled in the art can understand and read the modifications of any structures, changes of the proportion relation or adjustments of the sizes, without affecting the efficacy and the achievable purpose of the present invention, and still fall within the scope of the technical contents disclosed in the present invention.
Fig. 1 is a schematic view of the overall structure of a reverse osmosis membrane element in the prior art.
Fig. 2 is a schematic view of the overall structure of a reverse osmosis membrane module and a reverse osmosis membrane element with high COD and impurity contamination resistance according to an embodiment of the present invention.
Fig. 3 is a schematic view of a reverse osmosis membrane module and a structure for coating a hydrophilic coating layer in a reverse osmosis membrane element for resisting high COD and impurity contamination according to an embodiment of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
a central flow guide pipe 1 and a water through hole 11;
reverse osmosis membrane group 2: a filter membrane layer 21, a penetrating fluid collecting layer 22, a diversion net layer 23, an outer shell layer 24, a concave-convex surface 25 and a hydrophilic coating 26.
A raw water inlet end a, a pure water outlet end b and a concentrated water outlet end c.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the present specification, the terms "upper", "lower", "left", "right", "middle", and the like are used for clarity of description, and are not intended to limit the scope of the present invention, and changes or modifications in the relative relationship thereof may be made without substantial technical changes.
As shown in fig. 2 to 3, an embodiment of the present invention provides a reverse osmosis membrane element with high COD and impurity contamination resistance, which includes a central flow guide tube 1 and reverse osmosis membrane groups 2 wound outside the central flow guide tube 1 in an alternating manner, so as to improve internal components of the reverse osmosis membrane groups 2 on the basis of an anti-contamination membrane, wherein an open wide flow channel technology is used to change a rhombic flow channel, which originally forms a karman vortex street flow direction and is prone to adhering contaminants, into an open wide flow channel, so that the contaminants are more likely to flow away with concentrated water to reduce the contamination of the membrane; the two-way membrane surface coating technology is adopted, so that on one hand, the original hill-type uneven membrane surface is smoother, pollutants which are easy to embed into depressions on the membrane surface are improved, and on the other hand, the membrane performance of the smooth membrane surface is easier to recover after chemical cleaning; and thirdly, through a coating hydrophilic material technology, the original membrane surface has better hydrophilicity, and hydrophobic pollutants such as protein and the like are easier to flow away along with concentrated water. Through changing the inside subassembly of reverse osmosis membrane group 2 in order effectively to realize improving its antipollution to realize cleaning cycle, membrane life's promotion by a wide margin with this, reduced the production running cost of frequently changing the membrane element. The specific settings are as follows:
as shown in fig. 2, the central flow-guiding pipe 1 has a pipe extending direction, and two ends of the central flow-guiding pipe 1 along the pipe extending direction form a pure water outlet b respectively; the reverse osmosis membrane group 2 is wound on the outer side of the central flow guide pipe 1, and the reverse osmosis membrane group 2 corresponds to two end parts of the central flow guide pipe 1 to form a raw water inlet end a and a concentrated water outlet end c in a one-to-one correspondence mode respectively so as to achieve a given water treatment function.
The pipe wall of the central flow guide pipe 1 is uniformly provided with a plurality of limber holes 11, so that after raw water enters the reverse osmosis membrane group 2 from the raw water inlet end a, under the action of external water delivery pressure, part of the raw water forms water with lower concentration after the action of the reverse osmosis membrane group 2, the water can enter the central flow guide pipe 1 from the limber holes 11 and can flow out from two pure water outlet ends b of the central flow guide pipe 1, and water or pure water is effectively formed.
The reverse osmosis membrane group 2 comprises an outer shell layer 24, and a plurality of filter membrane layers 21, a penetrating fluid collection layer 22 and a flow guide net layer 23 which are alternately and overlappingly arranged on the inner side of the outer shell layer 24, so that raw water input from a raw water inlet end a can be effectively transmitted to the filter membrane layers 21 and the penetrating fluid collection layer 22 through the flow guide net layer 23, and impurities such as inorganic salt, heavy metal ions and colloid in the raw water are intercepted, dissolved and filtered by utilizing the filter membrane layers 21 and the penetrating fluid collection layer 22, so that waste water or concentrated water is effectively filtered.
After the conventional filter membrane layer 21 is highly amplified, it is found that the membrane surface has a concave-convex surface 25 (refer to fig. 3), and microorganisms, colloids, organic matters, precipitates of calcium and magnesium ions and the like are deposited on the concave position of the membrane surface, so that membrane pollution is caused. With the lapse of time, these particulate matters will be attached to the uneven pits or cracks on the membrane surface and gradually increase, thereby causing the fouling of the reverse osmosis membrane and the water yield to be obviously reduced.
As a preferable scheme of this embodiment, the concave-convex surface 25 of the filter membrane layer 21 is coated with a leveling coating, and the surface of the leveling coating facing away from the filter membrane layer 21 is a smooth surface, so that the original hill-type concave-convex surface 25 becomes smoother by means of a membrane surface coating technology, the defect that pollutants are easily embedded into the concave part of the membrane surface is effectively overcome, and meanwhile, the membrane performance of the smooth surface after chemical cleaning is easier to recover.
More preferably, the concave-convex surface 25 of the filter membrane layer 21 is coated with the hydrophilic coating 26 by a professional coating technology, the hydrophilic coating 26 contains but is not limited to hydroxyl, carboxyl and other materials, so that with the aid of the coating hydrophilic material technology, the membrane surface hydrophilicity of the original filter membrane layer 21 is better, and as the membrane surface hydrophilicity of the filter membrane layer 21 is higher, hydrophobic substances are less prone to being adsorbed on the membrane surface, the contamination resistance of the filter membrane layer is better, hydrophobic pollutants such as protein and the like are more prone to flowing away along with concentrated water, and the quality of pure water is further ensured.
The runners used in the existing diversion net layer 23 are all rhombic runners, pollutants can be easily attached to raw water when the raw water passes through the rhombic runners, and even after the rhombic runners are widened, the brought pollution resistance effect is still not obvious.
As another preferable scheme of this embodiment, the flow guide net layer 23 is provided with an open flow channel with better anti-pollution performance, and the open flow channel adopts an anti-pollution flow channel width of 34mil, so as to greatly and significantly alleviate the problem of chemical cleaning caused by the rise of the flow channel blocking pressure difference inside the flow guide net layer 23.
It should be noted that the form of the open flow channels may be, but is not limited to, that a plurality of protruding points are arranged on the side end surface of the diversion net layer 23, and the supporting is realized by the contact between the protruding points and the membrane surface of the filter membrane layer 21, so that a plurality of open flow channels are formed in a wide manner along the water inlet and outlet direction of the diversion net layer 23.
Therefore, the invention aims to improve the anti-pollution performance of the reverse osmosis membrane and provides a scheme capable of effectively improving the anti-pollution performance of the membrane. The method fills the gap that the anti-pollution performance of the reverse osmosis membrane on the market is insufficient, and manufacturers of large brands do not develop the anti-pollution membrane.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (9)
1. The utility model provides a reverse osmosis membrane layer subassembly, includes the filter membrane layer, the filter membrane layer has at least one concave-convex surface, its characterized in that, the concave-convex surface coating of filter membrane layer has the coating of making level, the coating of making level is deviating from the one side of concave-convex surface is smooth face, just the coating of making level is hydrophilic coating.
2. The reverse osmosis membrane layer assembly of claim 1,
the hydrophilic coating has hydroxyl and/or carboxyl groups.
3. The reverse osmosis membrane layer assembly of claim 1, further comprising a flow directing mesh layer adjacent to the filter membrane layer;
the diversion net layer is provided with an open type flow passage.
4. The reverse osmosis membrane layer assembly of claim 3,
the anti-pollution runner width of the open runner is not less than 34 mil.
5. The reverse osmosis membrane layer assembly of claim 3,
the side end face of the diversion net layer is provided with a plurality of salient points, the salient points are in contact support with the membrane surface of the filter membrane layer, and the diversion net layer forms a plurality of open type flow channels along the water inlet and outlet direction.
6. The reverse osmosis membrane element capable of resisting high COD and impurity pollution comprises a central flow guide pipe and is characterized by also comprising a reverse osmosis membrane group;
the reverse osmosis membrane module comprises a reverse osmosis membrane layer assembly as claimed in any one of claims 1 to 5;
the reverse osmosis membrane layer assembly is arranged on the outer side of the central flow guide pipe, and the central flow guide pipe is communicated with the reverse osmosis membrane layer assembly.
7. A reverse osmosis membrane element resistant to high COD and impurity contamination according to claim 6,
the central flow guide pipe is provided with a pipeline extending direction, and two ends of the central flow guide pipe along the pipeline extending direction respectively form a pure water outlet end;
the reverse osmosis membrane group is wound on the outer side of the central flow guide pipe, and the two end parts of the reverse osmosis membrane group corresponding to the central flow guide pipe respectively form a raw water inlet end and a concentrated water outlet end in a one-to-one correspondence mode.
8. A reverse osmosis membrane element according to claim 6 that is resistant to high COD and impurity contamination,
a plurality of limbers has been seted up to the pipe wall of center honeycomb duct, center honeycomb duct with pass through between the reverse osmosis membrane layer subassembly a plurality of limbers intercommunication sets up.
9. A reverse osmosis membrane element according to claim 6 that is resistant to high COD and impurity contamination,
the reverse osmosis membrane group also comprises an outer shell layer and a penetrating fluid collecting layer which is positioned on the inner side of the outer shell layer and is alternately stacked with the reverse osmosis membrane layer assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210410638.7A CN114713031A (en) | 2022-04-19 | 2022-04-19 | Reverse osmosis membrane layer assembly and reverse osmosis membrane element resistant to high COD and impurity pollution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210410638.7A CN114713031A (en) | 2022-04-19 | 2022-04-19 | Reverse osmosis membrane layer assembly and reverse osmosis membrane element resistant to high COD and impurity pollution |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114713031A true CN114713031A (en) | 2022-07-08 |
Family
ID=82242841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210410638.7A Pending CN114713031A (en) | 2022-04-19 | 2022-04-19 | Reverse osmosis membrane layer assembly and reverse osmosis membrane element resistant to high COD and impurity pollution |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114713031A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1505292A (en) * | 1974-04-10 | 1978-03-30 | Bellco Spa | Dialyser cartridges of roll type particularly for extracorporal artificial kidneys |
| CN101530751A (en) * | 2009-03-13 | 2009-09-16 | 浙江理工大学 | Self-cleaning reverse osmosis membrane |
| WO2014119453A1 (en) * | 2013-01-30 | 2014-08-07 | 旭硝子株式会社 | Transparent base having stain-proof film attached thereto |
| CN204824274U (en) * | 2015-06-09 | 2015-12-02 | 上海三邦水处理技术有限公司 | Waste water recycling equipment |
| CN106955598A (en) * | 2017-04-21 | 2017-07-18 | 江苏坤奕环境工程有限公司 | The open runner network pipe type high pressure reverse osmosis membrane assembly of super-pressure |
| CN108744984A (en) * | 2018-05-16 | 2018-11-06 | 南京帝膜净水材料开发有限公司 | A kind of wound membrane element |
| CN211470980U (en) * | 2019-11-21 | 2020-09-11 | 青岛金海顺净水设备有限公司 | Wide-runner reverse osmosis membrane |
-
2022
- 2022-04-19 CN CN202210410638.7A patent/CN114713031A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1505292A (en) * | 1974-04-10 | 1978-03-30 | Bellco Spa | Dialyser cartridges of roll type particularly for extracorporal artificial kidneys |
| CN101530751A (en) * | 2009-03-13 | 2009-09-16 | 浙江理工大学 | Self-cleaning reverse osmosis membrane |
| WO2014119453A1 (en) * | 2013-01-30 | 2014-08-07 | 旭硝子株式会社 | Transparent base having stain-proof film attached thereto |
| CN204824274U (en) * | 2015-06-09 | 2015-12-02 | 上海三邦水处理技术有限公司 | Waste water recycling equipment |
| CN106955598A (en) * | 2017-04-21 | 2017-07-18 | 江苏坤奕环境工程有限公司 | The open runner network pipe type high pressure reverse osmosis membrane assembly of super-pressure |
| CN108744984A (en) * | 2018-05-16 | 2018-11-06 | 南京帝膜净水材料开发有限公司 | A kind of wound membrane element |
| CN211470980U (en) * | 2019-11-21 | 2020-09-11 | 青岛金海顺净水设备有限公司 | Wide-runner reverse osmosis membrane |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103813843A (en) | Filter arrangement | |
| CN109179579A (en) | Coiled reverse osmosis membrane filter core and anti-penetration water purifier | |
| CN105233693B (en) | A kind of water purifier and its reverse-osmosis membrane element | |
| CN102764527B (en) | Pore shaft water supply filter assembly and filter system | |
| CN114713031A (en) | Reverse osmosis membrane layer assembly and reverse osmosis membrane element resistant to high COD and impurity pollution | |
| CN108328698A (en) | A kind of continuous filter sewage device of graphene film and filter method | |
| CN202682885U (en) | Cloth media filter | |
| CN208829295U (en) | A kind of thickness flow-guiding screen and the filter core using the thickness flow-guiding screen | |
| CN104307375B (en) | A kind of resistant to pollution flat membrane component of lower resistance short route | |
| CN206886868U (en) | Desalting water treatment device for surface water | |
| CN205398348U (en) | Circulated sewage treatment plant | |
| CN209098257U (en) | Coiled reverse osmosis membrane filter core and anti-penetration water purifier | |
| CN208611916U (en) | A kind of backpulsing water filtering device | |
| CN208603776U (en) | A kind of preposition pretreated disc tube reverse osmosis (dt-ro) film integrated film separator | |
| CN207862082U (en) | Water purification ultrafiltration apparatus | |
| CN216472377U (en) | Rotary membrane separation equipment | |
| CN209997456U (en) | reverse osmosis membrane filter element | |
| CN217163887U (en) | Anti-pollution reverse osmosis membrane component | |
| CN201071957Y (en) | Multi-core integrated multiport valve | |
| CN216755993U (en) | Water inlet grid for wide-runner rolled reverse osmosis membrane element | |
| CN218969028U (en) | Primary water filtering pool | |
| CN216549748U (en) | Membrane treatment system for reclaimed water reuse | |
| CN209411950U (en) | Sewage purifying device with nano material | |
| CN217367892U (en) | Water treatment filtering membrane component | |
| CN215985409U (en) | Solid-liquid separator for all-directional flow suspended matters |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220708 |
|
| RJ01 | Rejection of invention patent application after publication |