CN201485337U - Sea water desalinating device with low-pressure membrane separation method - Google Patents
Sea water desalinating device with low-pressure membrane separation method Download PDFInfo
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- CN201485337U CN201485337U CN2009201375076U CN200920137507U CN201485337U CN 201485337 U CN201485337 U CN 201485337U CN 2009201375076 U CN2009201375076 U CN 2009201375076U CN 200920137507 U CN200920137507 U CN 200920137507U CN 201485337 U CN201485337 U CN 201485337U
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- reverse osmosis
- nanofiltration
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- dialysate tank
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- 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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Abstract
The utility model provides a sea water desalinating device with a low-pressure membrane separation method, which comprises an ultrafilter, a nanofiltration membrane separating device, a nanofiltration dialysis tank, a first-grade low-pressure reverse osmosis membrane system, a first-grade reverse osmosis dialysis tank, a second-grade low-pressure reverse osmosis membrane system, pumps, and pipelines which are connected with each part; the ultrafilter is connected with a sea water transfer pump and is connected with the nanofiltration membrane separating device through a nanofiltration circulating pump, and a nanofiltration membrane dialyzate pipeline is connected with the nanofiltration dialysis tank; the nanofiltration dialysis tank is connected with the first-grade low-pressure reverse osmosis membrane system by a first-grade reverse osmosis pressuring pump, a reverse osmosis membrane dialyzate pipeline is connected with the first-grade reverse osmosis dialysis tank, and the first-grade reverse osmosis dialysis tank is connected with the second-grade low-pressure reverse osmosis membrane system by a second-grade reverse osmosis pressuring pump, and a second-grade low-pressure reverse osmosis membrane concentration pipe is connected with the nanofiltration dialysis tank; and the first-grade reverse osmosis dialysis tank is connected with a dialyzate pipeline of the second-grade low-pressure reverse osmosis membrane system by the pipeline. The device can desalinate the sea water under low pressure, reduces the pressure-resistant requirement and the operation safety of the device, and reduces the energy consumption of investment and operation.
Description
Technical field
The relevant a kind of sea water desalinating plant of the utility model is meant a kind of low-pressure membrane partition method sea water desalinating plant especially.
Background technology
Existing sea water desalinating plant is to carry out using the desalination of sea water desaltination film single stage method after the conventional pre-treatment, conventional pre-treatment can not be removed the impurity that influences the desalination membrane performance in the seawater fully, therefore need big flow to slow down the deposition of impurity, and the single stage method desalination need overcome the osmotic pressure of very high salt on the film surface.Big flow, high pressure make plant energy consumption very high, and large-scale sea water desalinating plant also need be provided with energy conversion device, and equipment exists that working pressure height, material requirements height, energy consumption are big, the shortcoming of poor stability.
The utility model content
The purpose of this utility model provides a kind of employing normal film tripping device and realizes sea water desaltination, reduces working pressure, thereby reduces material requirements and energy consumption, improves the low-pressure membrane partition method sea water desalinating plant of security.
For achieving the above object, solution of the present utility model is:
A kind of low-pressure membrane partition method sea water desalinating plant, it comprises accurate filter, nanofiltration membrane separation device, nanofiltration dialysate tank, one-level low pressure reverse osmosis film system, first-stage reverse osmosis dialysate tank, secondary low pressure reverse osmosis film system, pump and is connected each pipeline partly; Accurate filter connects the seawater transferpump; Accurate filter connects the nanofiltration membrane separation device by the nanofiltration recycle pump again, and nanofiltration membrane dialyzate pipe connection is to the nanofiltration dialysate tank; The nanofiltration dialysate tank links to each other with one-level low pressure reverse osmosis film system by the first-stage reverse osmosis force (forcing) pump, its reverse osmosis membrane dialyzate pipe connection is to the first-stage reverse osmosis dialysate tank, the first-stage reverse osmosis dialysate tank links to each other with secondary low pressure reverse osmosis film system by the two-pass reverse osmosis force (forcing) pump, and secondary low pressure reverse osmosis membrane concentration pipe links to each other with the nanofiltration dialysate tank; The first-stage reverse osmosis dialysate tank links to each other with secondary low pressure reverse osmosis film system dialyzate pipeline by pipeline.
After adopting such scheme, sea water desalinating plant of the present utility model adopts the pre-treatment of nanofiltration as reverse osmosis desalination on function, influence the factor of reverse osmosis desalination thereby removed all, and the film surface velocity is only relevant with the water rate of recovery of setting, flow reduces greatly, thereby has reduced energy consumption; On principle, utilize the rejection of different films, make the product water balance of efficiency of the total osmotic pressure and the films at different levels of salt, and every grade of film shared the osmotic pressure of part salt, made the device working pressure drop to conventional force value, further reduce energy consumption, thereby need not energy recycle device.
This device has realized that sea water preprocessing and three grades of membrane separation units bear the part osmotic pressure of salts solution in the seawater respectively, realizes realizing sea water desaltination under the low pressure, thereby has reduced the requirement of withstand voltage and the processing safety of device, has reduced investment and operation energy consumption.
Description of drawings
Fig. 1 is the synoptic diagram of sea water desalinating plant of the present utility model.
Embodiment
Cooperate shown in Figure 1, low-pressure membrane partition method sea water desalinating plant of the present utility model, it comprises seawater transferpump 1, accurate filter 2, nanofiltration recycle pump 3, nanofiltration membrane separation device 4, nanofiltration dialysate tank 5, first-stage reverse osmosis force (forcing) pump 6, one-level low pressure reverse osmosis film system 7, first-stage reverse osmosis dialysate tank 8, two-pass reverse osmosis force (forcing) pump 9, secondary low pressure reverse osmosis film system 10 and connects each pipeline 11 partly and forms.Seawater transferpump 1 is connected to accurate filter 2 by pipeline 11, seawater is delivered to accurate filter 2; Nanofiltration recycle pump 3 connects accurate filter 2 and nanofiltration membrane separation device 4 respectively by pipeline 11, nanofiltration membrane dialyzate pipeline 41 is connected on the nanofiltration dialysate tank 5, nanofiltration dialysate tank 5 links to each other with one-level low pressure reverse osmosis film system 7 with pipeline 11 by first-stage reverse osmosis force (forcing) pump 6, its reverse osmosis membrane dialyzate pipeline 71 is connected on the first-stage reverse osmosis dialysate tank 8, first-stage reverse osmosis dialysate tank 8 links to each other with secondary low pressure reverse osmosis film system 10 with pipeline 11 by two-pass reverse osmosis force (forcing) pump 9, and secondary low pressure reverse osmosis membrane concentration pipe 101 links to each other with nanofiltration dialysate tank 5; First-stage reverse osmosis dialysate tank 8 links to each other with secondary low pressure reverse osmosis film system 10 dialyzate pipelines 102 by pipeline 11.
The principle of work of this device is: seawater transferpump 1 is transported to accurate filter 2 with seawater, removes the impurity that influences the nanofiltration operating parameter, makes seawater quality satisfy nanofiltration water inlet condition; By pipeline 11 seawater is transported to nanofiltration membrane separation device 4 through nanofiltration recycle pump 3 then, the concentrated seawater part discharging that is trapped, a part is returned nanofiltration membrane separation device 4 by nanofiltration recycle pump 3, to improve crossflow velocity, assurance is trapped impurity and is not trapped in face, influences membrane separating property.The nanofiltration membrane dialyzate enters nanofiltration dialysate tank 5 by nanofiltration membrane dialyzate pipeline 41, via first-stage reverse osmosis force (forcing) pump 6 the nanofiltration seawater of dialysing is transported in the one-level low pressure reverse osmosis film system 7, part low price salt is trapped, the concentrated solution discharging of holding back, enter in the first-stage reverse osmosis dialysate tank 8 through containing sea brine, be transported in the two-pass reverse osmosis film system 10 by two-pass reverse osmosis force (forcing) pump 9 then, concentrated solution turns back in the nanofiltration dialysate tank 5, and dialyzate reaches the saliferous standard of tap water.
Sea water desalinating plant of the present utility model adopts the pre-treatment of nanofiltration as reverse osmosis desalination on function, thereby removed all and influenced the factor of reverse osmosis desalination, the film surface velocity is only relevant with the water rate of recovery of setting, and flow reduces greatly, thereby has reduced energy consumption; On principle, utilize the rejection of different films, make the product water balance of efficiency of the total osmotic pressure and the films at different levels of salt, and every grade of film shared the osmotic pressure of part salt, made the device working pressure drop to conventional force value, further reduce energy consumption, thereby need not energy recycle device.
This shows, this device has realized that sea water preprocessing and three grades of membrane separation units bear the part osmotic pressure of salts solution in the seawater respectively, realizing realizing sea water desaltination under the low pressure, thereby reducing the requirement of withstand voltage and the processing safety of device, reducing investment and operation energy consumption.
Key of the present utility model is:
1, adopts of the pre-treatment of nanofiltration membrane device as Reverse Osmosis Desalination Process Equipment.
2, nanofiltration and two steps ro balance are shared the total osmotic pressure of sea water desalinization, thereby realize sea water desaltination with low pressure.
3, the two steps ro flooding velocity is only relevant with the water rate of recovery.
Claims (1)
1. a low-pressure membrane partition method sea water desalinating plant is characterized in that: comprise accurate filter, nanofiltration membrane separation device, nanofiltration dialysate tank, one-level low pressure reverse osmosis film system, first-stage reverse osmosis dialysate tank, secondary low pressure reverse osmosis film system, pump and be connected each pipeline partly; Accurate filter connects the seawater transferpump; Accurate filter connects the nanofiltration membrane separation device by the nanofiltration recycle pump again, and nanofiltration membrane dialyzate pipe connection is to the nanofiltration dialysate tank; The nanofiltration dialysate tank links to each other with one-level low pressure reverse osmosis film system by the first-stage reverse osmosis force (forcing) pump, its reverse osmosis membrane dialyzate pipe connection is to the first-stage reverse osmosis dialysate tank, the first-stage reverse osmosis dialysate tank links to each other with secondary low pressure reverse osmosis film system by the two-pass reverse osmosis force (forcing) pump, and secondary low pressure reverse osmosis membrane concentration pipe links to each other with the nanofiltration dialysate tank; The first-stage reverse osmosis dialysate tank links to each other with secondary low pressure reverse osmosis film system dialyzate pipeline by pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201375076U CN201485337U (en) | 2009-04-02 | 2009-04-02 | Sea water desalinating device with low-pressure membrane separation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201375076U CN201485337U (en) | 2009-04-02 | 2009-04-02 | Sea water desalinating device with low-pressure membrane separation method |
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| Publication Number | Publication Date |
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| CN201485337U true CN201485337U (en) | 2010-05-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201375076U Expired - Lifetime CN201485337U (en) | 2009-04-02 | 2009-04-02 | Sea water desalinating device with low-pressure membrane separation method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102329019A (en) * | 2011-09-08 | 2012-01-25 | 吴章锋 | Ultralow-pressure membrane separation device for desalinating bitter and salty water |
| CN102329018A (en) * | 2011-09-08 | 2012-01-25 | 吴章锋 | Device for desalting sea water by low-pressure membrane method |
| CN102933507A (en) * | 2010-06-15 | 2013-02-13 | 通用电气公司 | Seawater desalination plant and production of high purity salt |
| CN110436574A (en) * | 2019-09-06 | 2019-11-12 | 厦门市天泉鑫膜科技股份有限公司 | A kind of inorganic salt solution concentrator and the continuous method for highly concentrating of inorganic salt solution |
-
2009
- 2009-04-02 CN CN2009201375076U patent/CN201485337U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102933507A (en) * | 2010-06-15 | 2013-02-13 | 通用电气公司 | Seawater desalination plant and production of high purity salt |
| CN102329019A (en) * | 2011-09-08 | 2012-01-25 | 吴章锋 | Ultralow-pressure membrane separation device for desalinating bitter and salty water |
| CN102329018A (en) * | 2011-09-08 | 2012-01-25 | 吴章锋 | Device for desalting sea water by low-pressure membrane method |
| CN102329018B (en) * | 2011-09-08 | 2013-08-28 | 吴章锋 | Device for desalting sea water by low-pressure membrane method |
| CN102329019B (en) * | 2011-09-08 | 2013-12-11 | 吴章锋 | Ultralow-pressure membrane separation device for desalinating bitter and salty water |
| CN110436574A (en) * | 2019-09-06 | 2019-11-12 | 厦门市天泉鑫膜科技股份有限公司 | A kind of inorganic salt solution concentrator and the continuous method for highly concentrating of inorganic salt solution |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: Xiamen TQX Membrane Technology Limited Assignor: Huang Songqing Contract record no.: 2009351000106 Date of cancellation: 20150327 |
|
| EM01 | Change of recordation of patent licensing contract |
Change date: 20150327 Contract record no.: 2009351000106 Assignee after: Xiamen TQX Membrane Technology Limited Assignee before: Xiamen Tianquanxin Membrane Technology Co., Ltd. |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Xiamen TQX Membrane Technology Limited Assignor: Huang Songqing Contract record no.: 2015350000031 Denomination of utility model: Sea water desalinating device with low-pressure membrane separation method Granted publication date: 20100526 License type: Exclusive License Record date: 20150504 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100526 |
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| CX01 | Expiry of patent term |