CN203699986U - Low-energy consumption desalination device for seawater - Google Patents
Low-energy consumption desalination device for seawater Download PDFInfo
- Publication number
- CN203699986U CN203699986U CN201420039561.8U CN201420039561U CN203699986U CN 203699986 U CN203699986 U CN 203699986U CN 201420039561 U CN201420039561 U CN 201420039561U CN 203699986 U CN203699986 U CN 203699986U
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- China
- Prior art keywords
- reverse osmosis
- film separating
- osmosis film
- low
- separating 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.)
- Expired - Lifetime
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- 239000013535 sea water Substances 0.000 title claims abstract description 67
- 238000010612 desalination reaction Methods 0.000 title claims abstract description 38
- 238000005265 energy consumption Methods 0.000 title claims abstract description 23
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 71
- 239000012528 membrane Substances 0.000 claims abstract description 42
- 238000000926 separation method Methods 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000001728 nano-filtration Methods 0.000 claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 238000011084 recovery Methods 0.000 claims abstract description 14
- 238000004891 communication Methods 0.000 claims abstract description 4
- 239000013505 freshwater Substances 0.000 claims description 28
- 238000011033 desalting Methods 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 5
- 239000012141 concentrate Substances 0.000 abstract 3
- 230000000694 effects Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 8
- 239000000047 product Substances 0.000 description 6
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000012466 permeate Substances 0.000 description 5
- 238000011010 flushing procedure Methods 0.000 description 4
- 239000008399 tap water Substances 0.000 description 4
- 235000020679 tap water Nutrition 0.000 description 4
- 238000013459 approach Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 235000019600 saltiness Nutrition 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 238000000108 ultra-filtration Methods 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
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model relates to a low-energy consumption desalination device for seawater. The low-energy consumption desalination device adopts the structure that the inlet of an ultra-filter is connected with a booster pump through a micro-filter, and the outlet of the ultra-filter is connected with a high-pressure pump provided with an energy recycle device; the outlet of the high-pressure pump is communicated with the water inlet of a desalination reverse osmosis membrane separation system through a pressure gauge (10); permeating liquid of the desalination reverse osmosis membrane separation system is discharged in company with permeating liquid of a first low-pressure reverse osmosis membrane separation system; concentrate of a first low-pressure reverse osmosis membrane separation system is in pipeline communication with permeating liquid of a second low-pressure reverse osmosis membrane separation system through a pipeline; concentrate of the desalination reverse osmosis membrane separation system is discharged in company with the permeating liquid of the low-pressure reverse osmosis membrane separation systems; concentrate of the second low-pressure reverse osmosis membrane separation system is discharged in company with permeating liquid of the nano-filtration membrane separation system; concentrated seawater generated again by the nano-filtration membrane separation system flows back into the high-pressure pump through another pressure gauge and further through a connecting pipe so as to recycle energy, and generate and discharge the final concentrated seawater. Therefore, special effects of low energy consumption, high recovery ratio, various water qualities of generated water and the like are realized.
Description
Technical field
The utility model relates to a kind of sea water desalting equipment, refers to especially a kind of low energy consumption sea water desalting apparatus.
Background technology
Along with the fast development of global economy, fresh water demand constantly increases, and Freshwater resources are more and more in short supply, and sea water desaltination, as solving one of grand strategy means of shortage of fresh water, has wide DEVELOPMENT PROSPECT.In numerous desalination technologies taking multistage flash evaporation, low-temperature multi-effect and reverse osmosis membrane as three large mainstream technologys.Wherein, reverse osmosis membrane law technology is comparatively advanced, stable and effective desalination technology now.Compared with other technologies, have technique simple, easy to operate, the plurality of advantages such as be easy to control, running cost is low.Therefore, it has clear superiority in sea water desaltination application.
But general embrane method desalination technology and equipment only adopts single-stage seawater desalination reverse osmosis film or single hop Using Multistage Membranes combination process to carry out sea water desalinization desalination at present, and it exists following problems:
(1) the seawater rate of recovery is lower, and energy consumption is high.At present the ton seawater desalination system rate of recovery approaches 40%, and for island and the common rate of recovery of middle and small scale seawater desalination system that waits peculiar to vessel, only between 10-20%, ton water consumption is higher than 10KWH;
(2) product water water quality is single, and comprehensive utilization degree is low.
Utility model content
The purpose of this utility model is to provide that a kind of energy consumption is low, the rate of recovery is high and produces the various low energy consumption sea water desalting apparatus of water water quality.
For achieving the above object, solution of the present utility model is:
A kind of low energy consumption sea water desalting apparatus, comprises the topping-up pump that connects by pipeline, micro-strainer, ultra-fine filter, high-pressure pump, seawater desalination reverse osmosis film separating system, the first low pressure reverse osmosis film separating system, the second low pressure reverse osmosis film separating system and nanofiltration membrane separation system with energy recycle device; The entrance of wherein said ultra-fine filter connects topping-up pump through micro-strainer, the high-pressure pump of its outlet connecting band energy recycle device, and the high pressure pump outlet with energy recycle device is communicated with seawater desalination reverse osmosis film separating system water-in through tensimeter; The liquid that sees through of described seawater desalination reverse osmosis film separating system is communicated with the first low pressure reverse osmosis film separating system water-in, and the liquid that sees through of the first low pressure reverse osmosis film separating system is exported by the first fresh water output terminal; And the concentrated solution of the first low pressure reverse osmosis film separating system by pipeline and the second low pressure reverse osmosis film separating system see through liquid pipeline communication, the outlet of seawater desalination reverse osmosis film separating system concentrated solution is communicated with the second low pressure reverse osmosis film separating system water-in, and the liquid that sees through of low pressure reverse osmosis film separating system is exported by the second fresh water output terminal; And the concentrated solution outlet of the second low pressure reverse osmosis film separating system is communicated with the water-in of nanofiltration membrane separation system, the liquid that sees through of nanofiltration membrane separation system is exported by the 3rd fresh water output terminal; The concentrated seawater that nanofiltration membrane separation system produces is again back to the high-pressure pump with energy recycle device by connecting tube again through tensimeter, carries out energy recovery, and produces final concentrated seawater discharge.
Described the first fresh water output terminal further connects sterilizer.
On the concentrated solution outlet conduit of described the second low pressure reverse osmosis film separating system, stopping valve is housed.
Described the first fresh water output terminal, the second fresh water output terminal carry out water quality detection or/and be respectively equipped with specific conductivity table before the 3rd fresh water output terminal.
Adopt after such scheme, the utility model by obtaining fresh water and concentrated solution by seawater after one section of film system separates, collect concentrated solution as the water inlet of second segment film separating system again separation obtain fresh water and concentrated solution, the multistage that goes round and begins again connection makes full use of seawater, thereby improves the seawater rate of recovery; And high-pressure pump provides high voltage power for seawater sees through film, press difference by adopting seawater desalination reverse osmosis film, low-pressure reverse osmosis membrane, required the seeing through of nanofiltration membrane, fully rationally utilize the dump energy that after separating, seawater carries, each group between film system without increasing again high-pressure pump, use energy recycle device recovery part energy simultaneously, realize less energy-consumption; And cause output fresh water water quality difference according to the filtering accuracy difference of seawater desalination reverse osmosis film, low-pressure reverse osmosis membrane, nanofiltration membrane, each product water, successively as tap water, reclaimed water, flushing supply, is realized to multipurpose use of sea water under less energy-consumption.
Brief description of the drawings
Fig. 1 is the utility model sea water desalinating plant schematic diagram.
Figure number explanation:
1 topping-up pump 2 micro-strainer 3 ultra-fine filters
4 high-pressure pump 5 sea water desaltination film separating systems with energy recycle device
6,7 low pressure reverse osmosis film separating system 8 nanofiltration membrane separation systems
9 sterilizer 10,11 tensimeters
12,13,14 specific conductivity tables 15, stopping valve.
Embodiment
Explain embodiment of the present utility model below in conjunction with accompanying drawing:
Coordinate shown in Fig. 1, the utility model has disclosed a kind of device of less energy-consumption desalination process, comprises the topping-up pump 1 that connects by pipeline, micro-strainer 2, ultra-fine filter 3, high-pressure pump 4, seawater desalination reverse osmosis film separating system 5, the first low pressure reverse osmosis film separating system 6, the second low pressure reverse osmosis film separating system 7 and nanofiltration membrane separation system 8 with energy recycle device.
The entrance of wherein said ultra-fine filter 3 connects topping-up pump 1 through micro-strainer 2, the high-pressure pump 4 of its outlet connecting band energy recycle device, and the outlet of the high-pressure pump 4 with energy recycle device is communicated with seawater desalination reverse osmosis film separating system 5 water-ins through tensimeter 10; The liquid that sees through of described seawater desalination reverse osmosis film separating system 5 is communicated with the first low pressure reverse osmosis film separating system 6 water-ins, the first low pressure reverse osmosis film separating system 6 see through liquid can be passed through by the water quality detection of specific conductivity table 12 the first fresh water output terminal, further connect sterilizer 9 at the first fresh water output terminal, as uv steriliser, output after its sterilization.
And the concentrated solution of the first low pressure reverse osmosis film separating system 6 by pipeline and the second low pressure reverse osmosis film separating system 7 see through liquid pipeline communication, the outlet of seawater desalination reverse osmosis film separating system 5 concentrated solutions is communicated with the second low pressure reverse osmosis film separating system 7 water-ins, low pressure reverse osmosis film separating system 7 see through liquid can be exported by the second fresh water output terminal by the water quality detection of specific conductivity table 13.
And stopping valve 15 is housed on the concentrated solution outlet conduit of the second low pressure reverse osmosis film separating system 7, pipe outlet is communicated with the water-in of nanofiltration membrane separation system 8, the seeing through liquid and can be exported by the 3rd fresh water output terminal by the water quality detection of specific conductivity table 14 of nanofiltration membrane separation system 8.
The concentrated seawater that nanofiltration membrane separation system 8 produces is again connected with the high-pressure pump 4 with energy recycle device by connecting tube through tensimeter 11 again, carries out energy recovery, and produces final concentrated seawater discharge.
The processing step that utilizes said apparatus specifically to implement less energy-consumption sea water desaltination is:
Step 1, drive input seawater desalination reverse osmosis film separating system to hold back all ions through sea water desaltination membrane sepn by high-pressure pump after pretreatment in seawater, obtain permeate and concentrated solution, permeate does the second-order separation through low pressure reverse osmosis film separating system again and can be used as tap water;
The concentrated solution of step 2, seawater desalination reverse osmosis film separating system output enters low pressure reverse osmosis film separating system by pipeline, separates to obtain permeate and concentrated solution, and permeate can be used as the reclaimed water that saltiness is less than 1000ppm;
Step 3, by the concentrated solution of low pressure reverse osmosis film separating system output and then be connected to nanofiltration membrane separation system by pipeline and remove the salinity of major part in seawater through nanofiltration membrane, gained permeate can be used as saltiness and is less than 10000ppm flushing supply; Concentrated solution end connects an energy recycle device to be promoted high-pressure pump rotating shaft and then converts ultra-filtration membrane dialyzate to enter the pressure energy of seawater desalination reverse osmosis film system to reclaim the pressure energy of concentrated solution, reduces the required energy consumption of high-pressure pump, and energy recovery efficiency reaches 20%.
The utility model system sea water desaltination rate of recovery, higher than 40%, approaches 50%, below desalination water ton water power consumption 5 degree.Each strand of water accounts for the ratio of total desalination water yield: the product water ratio approximately 20% of tap water, the product water ratio approximately 50% of reclaimed water, the product water ratio approximately 30% of flushing supply, the water ratio of three kinds of water in realistic life.
In sum, desalination technology of the present utility model has following advantage:
Multistage: seawater is obtained to fresh water and concentrated solution after one section of film system separates, collect concentrated solution as the water inlet of second segment film separating system again separation obtain fresh water and concentrated solution, the multistage that goes round and begins again connects and makes full use of seawater, thereby improves the seawater rate of recovery;
Less energy-consumption: high-pressure pump provides high voltage power for seawater sees through film, also be main energy consumption equipment, this process using seawater desalination reverse osmosis film, low-pressure reverse osmosis membrane, required the seeing through of nanofiltration membrane are pressed different (see through and press: seawater desalination reverse osmosis film > low-pressure reverse osmosis membrane > nanofiltration membrane), fully rationally utilize the dump energy that after separating, seawater carries, without increasing again high-pressure pump, use energy recycle device recovery part energy simultaneously, realize less energy-consumption;
Multipurpose use of sea water: this technique causes output fresh water water quality difference (output fresh water water quality: seawater desalination reverse osmosis film is better than low-pressure reverse osmosis membrane and is better than nanofiltration membrane) according to the filtering accuracy difference of seawater desalination reverse osmosis film, low-pressure reverse osmosis membrane, nanofiltration membrane, each product water, successively as tap water, reclaimed water, flushing supply, is realized to multipurpose use of sea water under less energy-consumption.
Claims (4)
1. a low energy consumption sea water desalting apparatus, is characterized in that: it comprises the topping-up pump that connects by pipeline, micro-strainer, ultra-fine filter, high-pressure pump, seawater desalination reverse osmosis film separating system, the first low pressure reverse osmosis film separating system, the second low pressure reverse osmosis film separating system and nanofiltration membrane separation system with energy recycle device; The entrance of wherein said ultra-fine filter connects topping-up pump through micro-strainer, the high-pressure pump of its outlet connecting band energy recycle device, and the high pressure pump outlet with energy recycle device is communicated with seawater desalination reverse osmosis film separating system water-in through tensimeter; The liquid that sees through of described seawater desalination reverse osmosis film separating system is communicated with the first low pressure reverse osmosis film separating system water-in, and the liquid that sees through of the first low pressure reverse osmosis film separating system is exported by the first fresh water output terminal; And the concentrated solution of the first low pressure reverse osmosis film separating system by pipeline and the second low pressure reverse osmosis film separating system see through liquid pipeline communication, the outlet of seawater desalination reverse osmosis film separating system concentrated solution is communicated with the second low pressure reverse osmosis film separating system water-in, and the liquid that sees through of low pressure reverse osmosis film separating system is exported by the second fresh water output terminal; And the concentrated solution outlet of the second low pressure reverse osmosis film separating system is communicated with the water-in of nanofiltration membrane separation system, the liquid that sees through of nanofiltration membrane separation system is exported by the 3rd fresh water output terminal; The concentrated seawater that nanofiltration membrane separation system produces is again connected with the high-pressure pump with energy recycle device by connecting tube through tensimeter again, carries out energy recovery, and produces final concentrated seawater discharge.
2. low energy consumption sea water desalting apparatus as claimed in claim 1, is characterized in that: described the first fresh water output terminal further connects sterilizer.
3. low energy consumption sea water desalting apparatus as claimed in claim 1, is characterized in that: on the concentrated solution outlet conduit of described the second low pressure reverse osmosis film separating system, stopping valve is housed.
4. low energy consumption sea water desalting apparatus as claimed in claim 2 or claim 3, is characterized in that: described the first fresh water output terminal, the second fresh water output terminal carry out water quality detection or/and be respectively equipped with specific conductivity table before the 3rd fresh water output terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420039561.8U CN203699986U (en) | 2014-01-22 | 2014-01-22 | Low-energy consumption desalination device for seawater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420039561.8U CN203699986U (en) | 2014-01-22 | 2014-01-22 | Low-energy consumption desalination device for seawater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203699986U true CN203699986U (en) | 2014-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420039561.8U Expired - Lifetime CN203699986U (en) | 2014-01-22 | 2014-01-22 | Low-energy consumption desalination device for seawater |
Country Status (1)
| Country | Link |
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| CN (1) | CN203699986U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103787462A (en) * | 2014-01-22 | 2014-05-14 | 厦门溢盛环保科技有限公司 | Low-energy consumption seawater desalinating technology and low-energy consumption seawater desalinating device |
| CN108083385A (en) * | 2017-12-26 | 2018-05-29 | 哈尔滨锅炉厂有限责任公司 | Improve the counter-infiltration system and recovery method of seawater desalination recovery rate |
-
2014
- 2014-01-22 CN CN201420039561.8U patent/CN203699986U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103787462A (en) * | 2014-01-22 | 2014-05-14 | 厦门溢盛环保科技有限公司 | Low-energy consumption seawater desalinating technology and low-energy consumption seawater desalinating device |
| CN108083385A (en) * | 2017-12-26 | 2018-05-29 | 哈尔滨锅炉厂有限责任公司 | Improve the counter-infiltration system and recovery method of seawater desalination recovery rate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140709 |