CN116282377A - Multistage tandem reverse osmosis membrane group high-salt wastewater concentration system - Google Patents
Multistage tandem reverse osmosis membrane group high-salt wastewater concentration system Download PDFInfo
- Publication number
- CN116282377A CN116282377A CN202310204223.9A CN202310204223A CN116282377A CN 116282377 A CN116282377 A CN 116282377A CN 202310204223 A CN202310204223 A CN 202310204223A CN 116282377 A CN116282377 A CN 116282377A
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- CN
- China
- Prior art keywords
- reverse osmosis
- osmosis membrane
- wastewater
- storage box
- concentration system
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- 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.)
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Links
- 238000001223 reverse osmosis Methods 0.000 title claims abstract description 76
- 239000012528 membrane Substances 0.000 title claims abstract description 54
- 239000002351 wastewater Substances 0.000 title claims abstract description 52
- 230000007246 mechanism Effects 0.000 claims abstract description 24
- 238000000926 separation method Methods 0.000 claims abstract description 5
- 238000003860 storage Methods 0.000 claims description 32
- 238000004140 cleaning Methods 0.000 claims description 24
- 238000003825 pressing Methods 0.000 claims description 20
- 239000003344 environmental pollutant Substances 0.000 claims description 19
- 231100000719 pollutant Toxicity 0.000 claims description 19
- 238000007790 scraping Methods 0.000 claims description 10
- 210000004209 hair Anatomy 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 claims 1
- 230000005484 gravity Effects 0.000 abstract description 3
- 230000003204 osmotic effect Effects 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000012141 concentrate Substances 0.000 description 3
- 239000012466 permeate Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000000356 contaminant Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- -1 i.e. Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Images
Classifications
-
- 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
- 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
-
- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention relates to a multistage serial reverse osmosis membrane group high-salt wastewater concentration system. The wastewater concentration system comprises a vertically arranged mounting frame, wherein more than two reverse osmosis mechanisms are sequentially arranged on the mounting frame from top to bottom, a drain pipe for wastewater to pass through is arranged between the adjacent reverse osmosis mechanisms, a hydraulic cylinder for pressurizing wastewater in the reverse osmosis mechanisms is arranged on the reverse osmosis mechanisms, and more than two hydraulic cylinders are connected to a hydraulic station for providing power for the reverse osmosis mechanisms; the reverse osmosis mechanism comprises a reaction tube for storing wastewater, and a reverse osmosis membrane for membrane separation is arranged at the bottom end of the reaction tube; according to the invention, the multistage reverse osmosis membranes connected in series are arranged in the vertical direction, so that the wastewater forms pressure at the osmotic membrane through the gravity of the wastewater, and extra pressure input is reduced or even not needed, so that the purchase cost and the use cost of the high-pressure pump are reduced, and the consumption of energy sources is reduced.
Description
Technical Field
The invention belongs to the technical field of wastewater concentration, and particularly relates to a multistage serial reverse osmosis membrane group high-salt wastewater concentration system.
Background
Reverse osmosis, also known as reverse osmosis, is a membrane separation operation that separates solvent from solution using pressure differential as the driving force. The feed liquid on one side of the membrane is pressurized and when the pressure exceeds its osmotic pressure, the solvent will reverse permeate against the natural direction of permeation. Thereby obtaining a permeate solvent, i.e., permeate, on the low pressure side of the membrane; the high pressure side gives a concentrated solution, i.e. a concentrate.
Because the bearing pressure of the reverse osmosis membrane is limited, the concentration of the feed brine cannot be completed completely through one-time pressurization, and reverse osmosis treatment is carried out in a multistage series connection mode at present, however, the reverse osmosis of each stage needs to be added with a high-pressure pump, so that the equipment cost is increased, and the high-pressure pump of each stage provides high pressure and simultaneously increases the energy consumption, so that the production cost is further increased.
Disclosure of Invention
The invention aims to solve the problems in the background art and provides a multistage serial reverse osmosis membrane group high-salt wastewater concentration system.
The invention realizes the above purpose through the following technical scheme:
the multistage serial reverse osmosis membrane group high-salt wastewater concentration system comprises a vertically arranged mounting frame, more than two reverse osmosis mechanisms are sequentially arranged on the mounting frame from top to bottom, a drain pipe for wastewater to pass through is arranged between the adjacent reverse osmosis mechanisms, a hydraulic cylinder for pressurizing wastewater in the reverse osmosis mechanisms is arranged on the reverse osmosis mechanisms, and more than two hydraulic cylinders are connected to a hydraulic station for providing power for the hydraulic cylinders;
the reverse osmosis mechanism comprises a reaction tube for storing wastewater, and a reverse osmosis membrane for membrane separation is arranged at the bottom end of the reaction tube;
the output end of the hydraulic cylinder is connected with a pressing plate for pressurizing wastewater, the pressing plate is positioned inside the reaction tube, and an electromagnetic valve for the wastewater to pass through is arranged on the pressing plate.
Preferably, one end of the reaction tube, which is close to the reverse osmosis membrane, is provided with a rotatable sleeve, a screw shaft is connected with the sleeve in an internal thread manner, a reset spring for driving the screw shaft to reset is arranged in the sleeve, a clamping block is arranged at one end of the screw shaft, which is located outside the sleeve, a limiting block matched with the clamping block is arranged at one end of the pressing plate, which is close to the screw shaft, and the clamping block is clamped when the limiting block moves downwards, so that the screw shaft is directly upwards and downwards and does not rotate, and more than two scraping plates for cleaning the reverse osmosis membrane are arranged on the sleeve along the circumferential direction of the sleeve.
Preferably, the bottom of the scraping plate is provided with brush hairs for cleaning pollutants on the surface of the reverse osmosis membrane.
Preferably, the surface of the scraping plate is provided with a storage box for storing pollutants, the opening direction of the storage box faces to the reverse osmosis membrane, and the storage box is positioned on one side of the scraping plate away from the sleeve.
Preferably, the cross section of the storage box is J-shaped, and a guide plate for guiding pollutants is arranged on the storage box.
Preferably, a cleaning block for cleaning pollutants is arranged in the storage box, the cleaning block is of a hollow structure, and a stop block for preventing the cleaning block from separating from the storage box is arranged on the storage box.
The invention has the beneficial effects that:
according to the invention, the multistage reverse osmosis membranes connected in series are arranged in the vertical direction, so that the wastewater forms pressure at the osmotic membrane through the gravity of the wastewater, and extra pressure input is reduced or even not needed, so that the purchase cost and the use cost of the high-pressure pump are reduced, and the consumption of energy sources is reduced.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic cross-sectional view of the reaction tube of the present invention;
FIG. 3 is an enlarged schematic view at A in FIG. 2;
fig. 4 is a schematic view showing the positional relationship between the cartridge and the sleeve in the present invention.
In the figure: 1. a mounting frame; 2. a drain pipe; 3. a hydraulic cylinder; 4. a hydraulic station; 5. a reaction tube; 6. a reverse osmosis membrane; 7. a pressing plate; 8. an electromagnetic valve; 9. a sleeve; 10. a screw shaft; 11. a return spring; 12. a clamping block; 13. a limiting block; 14. a scraper; 15. a stock box; 16. a guide plate; 17. a cleaning block; 18. and a stop block.
Detailed Description
The following detailed description of the present application is provided to illustrate the present application and should not be construed as limiting the scope of the present application, since numerous insubstantial modifications and adaptations of the present application will be apparent to those skilled in the art from the foregoing disclosure.
Example 1
As shown in fig. 1-4, the multistage serial reverse osmosis membrane group high-salt wastewater concentration system comprises a vertically arranged mounting frame 1, wherein more than two reverse osmosis mechanisms are sequentially arranged on the mounting frame 1 from top to bottom, a drain pipe 2 for wastewater to pass through is arranged between adjacent reverse osmosis mechanisms, a hydraulic cylinder 3 for pressurizing wastewater in the reverse osmosis mechanisms is arranged on each reverse osmosis mechanism, and more than two hydraulic cylinders 3 are connected to a hydraulic station 4 for providing power for the hydraulic cylinders;
the reverse osmosis mechanism comprises a reaction tube 5 for storing wastewater, and a reverse osmosis membrane 6 for membrane separation is arranged at the bottom end of the reaction tube 5;
the output end of the hydraulic cylinder 3 is connected with a pressing plate 7 for pressurizing wastewater, the pressing plate 7 is positioned inside the reaction tube 5, and an electromagnetic valve 8 for the wastewater to pass through is arranged on the pressing plate 7.
In the above embodiment, by disposing the reaction tube 5 in the vertical direction, the wastewater in the reaction tube 5 can be made to form a large water pressure at the reverse osmosis membrane 6 at the bottom of the reaction tube 5. Generally speaking, the operating pressure requirements of a reverse osmosis water treatment plant are 0.2-0.5MPa, calculated on the basis of 1MPa equal to 100 meters of water column, the height of the reaction tube 5 should be 20-50 meters, and the reaction tube 5 may be placed underground. Through the vertical arrangement of the reverse osmosis mechanisms, the liquid output by the upper reverse osmosis mechanism enters the lower reverse osmosis mechanism to serve as water inflow. When the reaction tube 5 is filled with water, a pressure of approximately 0.2-0.5MPa can be formed at the reverse osmosis membrane 6, and the reverse osmosis membrane 6 can work automatically at the moment, and only waste water needs to be pumped into the reaction tube 5 at the top end. When the water pressure at the reverse osmosis membrane 6 is insufficient due to the fact that the height requirement of the reaction tube 5 is not met, the hydraulic station 4 provides pressure for the hydraulic cylinder 3 through control of the control system, and the hydraulic cylinder 3 drives the pressing plate 7 to move. When the pressing plate 7 moves downwards, the waste water in the reaction tube 5 is extruded, so that the waste water reaches the working pressure at the reverse osmosis membrane 6, and the normal reverse osmosis is ensured. When the pressing plate 7 moves upwards, the electromagnetic valve 8 is started to be opened, and wastewater above the pressing plate 7 passes through the electromagnetic valve 8 to come under the pressing plate 7, so that the wastewater is gathered in the reaction tube 5, and further the next reverse osmosis work can be completed. After the completion of the concentration for a plurality of times, the waste water in the reaction tube 5 is discharged through a discharge valve.
As a further scheme of the invention, one end of the reaction tube 5, which is close to the reverse osmosis membrane 6, is provided with a rotatable sleeve 9, a screw shaft 10 is connected with the sleeve 9 in an internal thread manner, a reset spring 11 for driving the screw shaft 10 to reset is arranged in the sleeve 9, one end of the screw shaft 10, which is positioned outside the sleeve 9, is provided with a clamping block 12, one end of the pressing plate 7, which is close to the screw shaft 10, is provided with a limiting block 13 which is mutually matched with the clamping block 12, and the limiting block 13 clamps the clamping block 12 when moving downwards, so that the screw shaft 10 is directly and directly arranged without rotating, and more than two scraping plates 14 for cleaning the reverse osmosis membrane 6 are arranged on the sleeve 9 along the circumference of the sleeve 9.
As a further scheme of the invention, the bottom of the scraping plate 14 is provided with brush hairs for cleaning pollutants on the surface of the reverse osmosis membrane 6.
In the above embodiment, the pressure plate 7 concentrates the wastewater at the reverse osmosis membrane 6 a plurality of times and the concentration treatment for a long time is easy to cause the concentration of more contaminants at the reverse osmosis membrane 6, thereby causing the efficiency of the reverse osmosis membrane 6 to be lowered. Through being provided with fixture block 12 and stopper 13, drive stopper 13 and fixture block 12 contact when clamp plate 7 downwardly moving in-process, fixture block 12 enters into inside stopper 13 for fixture block 12 can't produce the rotation of horizontal direction. When the pressing plate 7 continues to move downwards, the screw shaft 10 is driven to move downwards, and when the screw shaft 10 moves inside the sleeve 9, the sleeve 9 is driven to rotate, so that the scraping plate 14 on the side wall of the sleeve 9 rotates along the sleeve 9 as the center. The scraper 14 scrapes off pollutants on the surface of the reverse osmosis membrane 6 in the rotating process, so that the cleaning efficiency of the reverse osmosis membrane 6 can be improved. The return spring 11 presses the screw shaft 10 when the pressing plate 7 moves upward, so that the screw shaft 10 and the clamp block 12 move upward, returning to the initial position, thereby enabling the screw shaft 10 to be reused.
Wherein, the brush hair can improve the cleaning effect of the scraper 14 on the reverse osmosis membrane 6.
As a further scheme of the invention, a storage box 15 for storing pollutants is arranged on the surface of the scraper 14, the opening direction of the storage box 15 faces to the reverse osmosis membrane 6, and the storage box 15 is positioned on one side of the scraper 14 away from the sleeve 9.
As a further aspect of the present invention, the cross section of the storage box 15 is J-shaped, and a guide plate 16 for guiding the pollutant is provided on the storage box 15.
In the above described embodiment the scraper 14 gradually concentrates the contaminants during rotation to the side of the scraper 14 remote from the sleeve 9 and gradually into the magazine 15. The pollutants in the storage box 15 can not be carried out by the waste water which is supplemented when the waste water which is not treated above the pressing plate 7 supplements the concentrated waste water through the waste water, thereby ensuring the collection of the pollutants and ensuring the centralized preservation of the pollutants.
Wherein, the pollutants cleaned from the reverse osmosis membrane 6 are moved into the storage box 15 along the guide plate 16 by the arrangement of the guide plate 16.
As a further scheme of the invention, a cleaning block 17 for cleaning pollutants is arranged in the storage box 15, the cleaning block 17 is of a hollow structure, and a stop block 18 for preventing the cleaning block 17 from separating from the storage box 15 is arranged on the storage box 15.
In the above embodiment, when the reaction tube 5 is filled with wastewater, the cleaning block 17 has a large buoyancy, and the cleaning block 17 is located at the top of the inner cavity of the storage box 15. When the concentrated wastewater of the reaction tube 5 is discharged, the cleaning block 17 moves downwards under the action of gravity and scrapes off the pollutants adhered on the inner side wall of the storage box 15 when moving along the inner side wall of the storage box 15, so that the scaling condition of the inner side wall of the storage box 15 is reduced. When the reaction tube 5 is filled with new waste water, the cleaning block 17 is positioned at the top of the inner cavity of the storage box 15 under the action of the floating force, and the storage box 15 normally stores pollutants.
Claims (6)
1. A multistage tandem reverse osmosis membrane group high-salt wastewater concentration system is characterized in that: the device comprises a vertically arranged mounting frame (1), wherein more than two reverse osmosis mechanisms are sequentially arranged on the mounting frame (1) from top to bottom, a drain pipe (2) for the waste water to pass through is arranged between the adjacent reverse osmosis mechanisms, a hydraulic cylinder (3) for pressurizing the waste water in the reverse osmosis mechanisms is arranged on the reverse osmosis mechanisms, and more than two hydraulic cylinders (3) are connected to a hydraulic station (4) for providing power for the hydraulic cylinders;
the reverse osmosis mechanism comprises a reaction tube (5) for storing wastewater, and a reverse osmosis membrane (6) for membrane separation is arranged at the bottom end of the reaction tube (5);
the output end of the hydraulic cylinder (3) is connected with a pressing plate (7) for pressurizing wastewater, the pressing plate (7) is positioned inside the reaction tube (5), and an electromagnetic valve (8) for allowing wastewater to pass through is arranged on the pressing plate (7).
2. The multi-stage series reverse osmosis membrane module high-salinity wastewater concentration system according to claim 1, wherein: the reaction tube (5) is close to one end of reverse osmosis membrane (6) and is equipped with rotatable sleeve (9), sleeve (9) internal thread connection has lead screw axle (10), be equipped with reset spring (11) that drive lead screw axle (10) reset in sleeve (9), lead screw axle (10) are located the outer one end of sleeve (9) and are equipped with fixture block (12), the one end that clamp plate (7) is close to lead screw axle (10) is equipped with stopper (13) mutually supporting with fixture block (12), stopper (13) block fixture block (12) when moving down for lead screw axle (10) directly go up straight and do not take place to rotate, be equipped with scraper blade (14) that are used for clearing up reverse osmosis membrane (6) along its circumference on sleeve (9).
3. The multi-stage series reverse osmosis membrane module high-salt wastewater concentration system according to claim 2, wherein: the bottom of the scraping plate (14) is provided with brush hair for cleaning pollutants on the surface of the reverse osmosis membrane (6).
4. A multi-stage series reverse osmosis membrane module high salt wastewater concentration system according to claim 3 and wherein: the surface of the scraping plate (14) is provided with a storage box (15) for storing pollutants, the opening direction of the storage box (15) faces to the reverse osmosis membrane (6), and the storage box (15) is positioned on one side, far away from the sleeve (9), of the scraping plate (14).
5. The multi-stage series reverse osmosis membrane module high-salinity wastewater concentration system according to claim 4, wherein: the section of the storage box (15) is J-shaped, and a guide plate (16) for guiding pollutants is arranged on the storage box (15).
6. The multi-stage series reverse osmosis membrane module high-salinity wastewater concentration system according to claim 5, wherein: the cleaning block (17) for cleaning pollutants is arranged in the storage box (15), the cleaning block (17) is of a hollow structure, and a stop block (18) for preventing the cleaning block (17) from separating from the storage box (15) is arranged on the storage box (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310204223.9A CN116282377B (en) | 2023-02-28 | 2023-02-28 | Multistage tandem reverse osmosis membrane group high-salt wastewater concentration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310204223.9A CN116282377B (en) | 2023-02-28 | 2023-02-28 | Multistage tandem reverse osmosis membrane group high-salt wastewater concentration system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116282377A true CN116282377A (en) | 2023-06-23 |
| CN116282377B CN116282377B (en) | 2024-06-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310204223.9A Active CN116282377B (en) | 2023-02-28 | 2023-02-28 | Multistage tandem reverse osmosis membrane group high-salt wastewater concentration system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5916441A (en) * | 1995-11-13 | 1999-06-29 | D'sal International, Inc. | Apparatus for desalinating salt water |
| JP2005014379A (en) * | 2003-06-25 | 2005-01-20 | Asahi Kasei Chemicals Corp | Method and apparatus for manufacturing sleeve printing plate |
| KR20100053440A (en) * | 2008-11-11 | 2010-05-20 | 웅진케미칼 주식회사 | Reverse osmosis water purifier having simple filter configuration |
| CN209530553U (en) * | 2019-01-23 | 2019-10-25 | 四川通力达医疗水处理设备有限公司 | Pressure vessel for reverse osmosis with anti-pollution automatic flushing function |
| CN111204892A (en) * | 2020-02-26 | 2020-05-29 | 苏州新派特信息科技有限公司 | Seawater desalination and permeation device |
-
2023
- 2023-02-28 CN CN202310204223.9A patent/CN116282377B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5916441A (en) * | 1995-11-13 | 1999-06-29 | D'sal International, Inc. | Apparatus for desalinating salt water |
| JP2005014379A (en) * | 2003-06-25 | 2005-01-20 | Asahi Kasei Chemicals Corp | Method and apparatus for manufacturing sleeve printing plate |
| KR20100053440A (en) * | 2008-11-11 | 2010-05-20 | 웅진케미칼 주식회사 | Reverse osmosis water purifier having simple filter configuration |
| CN209530553U (en) * | 2019-01-23 | 2019-10-25 | 四川通力达医疗水处理设备有限公司 | Pressure vessel for reverse osmosis with anti-pollution automatic flushing function |
| CN111204892A (en) * | 2020-02-26 | 2020-05-29 | 苏州新派特信息科技有限公司 | Seawater desalination and permeation device |
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| Publication number | Publication date |
|---|---|
| CN116282377B (en) | 2024-06-21 |
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