CN206447713U - Full Membrane seawater desalination and strong brine utilization system - Google Patents
Full Membrane seawater desalination and strong brine utilization system Download PDFInfo
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- CN206447713U CN206447713U CN201621269170.0U CN201621269170U CN206447713U CN 206447713 U CN206447713 U CN 206447713U CN 201621269170 U CN201621269170 U CN 201621269170U CN 206447713 U CN206447713 U CN 206447713U
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- China
- Prior art keywords
- reverse osmosis
- water
- strong brine
- nanofiltration
- delivery port
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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
Abstract
The utility model discloses a kind of full Membrane seawater desalination and strong brine utilization system, including the sea water desalinating unit and enrichment facility connected by pipeline；Wherein sea water desalinating unit includes the reverse osmosis pretreatment device, first-stage reverse osmosis device and desalination pond connected with pipeline；Enrichment facility includes one-level nanofiltration device, two grades of nanofiltration devices and MVR crystallizers；The delivery port of the strong brine of first-stage reverse osmosis device is connected with the water inlet of one-level nanofiltration device；The delivery port of the condensed water of one-level nanofiltration device is connected with the water inlet of MVR crystallizers；The delivery port of the filtered water of one-level nanofiltration device is connected with the water inlet of two grades of nanofiltration devices；The delivery port of the filtered water of two grades of nanofiltration devices is connected with the water inlet of first-stage reverse osmosis device；The delivery port of the condensed water of two grades of nanofiltration devices is connected with the water inlet of MVR crystallizers.The system can realize that chemical products are extracted in zero-emission, and integrated use energy consumption during filtering reduces integrated operation cost.
Description
Technical field
The utility model is related to field of seawater desalination, and more particularly to a kind of full Membrane seawater desalination and strong brine integrate profit
Use system.
Background technology
In recent years, China's desalinization industry was developed rapidly, and China some areas are alleviated to a certain extent
The problem of water resource worsening shortages.But continuing to develop with desalinization industry, desalinate by-product strong brine emission problem and get over
More to obtain the attention of people, at present, most desalination strong brine is all directly discharged into ocean, due to its salt content ratio of strong brine
Seawater is high 1~3 times, and directly row sea can cause very big pollution to ocean, and certain destruction is caused to local marine ecology.And
A day solar salt is carried out to it using salt pan, because the demand in soil also governs the development of desalinization industry.
In order to reduce pollution of the strong brine to ocean, while effectively using the chemical element in concentrated seawater, using zero-emission
Discharge technique, desalinates seawater, and extracts chemical products to strong brine, has efficacious prescriptions to what marine ecology influenceed as reduction
Method.But at present the concentration technology of strong brine is needed to consume substantial amounts of energy consumption, seriously govern the utilization of strong brine.
The content of the invention
In order to realize the zero-emission of desalinization, the utility model provides a kind of full Membrane seawater desalination and strong brine is integrated
Using system, chemical products, and the integrated use energy consumption in filter process are extracted using zero-discharge technology, seawater is reduced light
The integrated operation cost of change technology.
Therefore, the technical solution of the utility model is：
A kind of full Membrane seawater desalination and strong brine utilization system, including the sea water desalinating unit connected by pipeline
And enrichment facility；
The sea water desalinating unit includes reverse osmosis pretreatment device, first-stage reverse osmosis device and the desalination connected with pipeline
Pond；The desalination pond is connected with the filtered water delivery port of the first-stage reverse osmosis device；The first-stage reverse osmosis device
The delivery port of strong brine be connected with the enrichment facility；
The enrichment facility includes one-level nanofiltration device, two grades of nanofiltration devices and MVR crystallizers；The first-stage reverse osmosis dress
The delivery port for the strong brine put is connected with the water inlet of the one-level nanofiltration device；The condensed water of the one-level nanofiltration device goes out
The mouth of a river is connected with the water inlet of MVR crystallizers；The delivery port of the filtered water of the one-level nanofiltration device is filled with two grades of nanofiltrations
The water inlet connection put；The water inlet phase of the delivery port and the first-stage reverse osmosis device of the filtered water of two grades of nanofiltration devices
Even；The delivery port of the condensed water of two grades of nanofiltration devices is connected with the water inlet of MVR crystallizers.
Further, the product that the MVR crystallizers are obtained obtains different chemical products through salt manufacturing and salt chemical engineering device.
Salt manufacturing and salt chemical engineering device, including the salt making equipment being sequentially connected, potassium chloride equipment, magnesium sulfate equipment, bromine are set
It is standby, magnesium chloride equipment.Using multiple-effect evaporation, adding halogen method, Air blowing, the system such as single effect evaporation produces sodium chloride, potassium chloride, sulphur
The chemical products such as sour magnesium, bromine and magnesium chloride.
It is preferred that, the reverse osmosis pretreatment device includes heat-exchange device, piping filter, the ultrafiltration dress being sequentially connected
Put, ultrafiltration pond and cartridge filter.
It is preferred that, the first-stage reverse osmosis device is one-level two-part reverse osmosis unit, can bring up to seawater recoveries
64%~67%, strong brine can be concentrated into 9 Baume degrees and more than.
The reverse osmosis unit includes one section of high-pressure pump, one section of RO membrane module, two sections of booster pumps, two sections of RO membrane modules, energy
Measure retracting device and desalination pond；
Preferably, the upstream end of the MVR crystallizers connects one end of energy recycle device, the energy recycle device
The other end is connected to the inlet end of the first-stage reverse osmosis device.Further preferably, strong brine enters before MVR crystallizers, through pipe
Road connection enters energy recycle device, and the energy recycle device is integrally formed with RO water inlet end high-pressure pumps.
The strong brine that one-level nanofiltration device and two grades of nanofiltration devices come out is through energy recycle device, the pressure energy carried
The mechanical energy of the high-pressure pump of first-stage reverse osmosis device is transferred to, the one-level NF device rate of recovery is set to 62%~70%.
The transmission water of the one-level NF devices enters two grades of nanofiltration devices by pipeline connection, first passes around two grades of NF high pressures
Pump, to being pressurized through water, subsequently into NF film devices.After separation concentration, two grades of NF device concentrated water concentration reach 15 ripples
U.S. degree, is connected by concentrated water pipeline with one-level NF concentrated water pipelines, into MVR crystallizers.
The transmission water of two grades of NF devices is back to desalinization RO device water inlet pipes by pipeline connection.Two grades of NF dresses
Put back into yield and be set to 75%~85%.
Preferably, the one-level nanofiltration device and two grades of nanofiltration devices may be configured as one section, two sections or multistage is set.
By technical scheme described in enrichment facility, original RO strong brines can be directly entered MVR crystallizers, ton water consumption
8kwh is reduced to from 17kwh, the energy consumption cost of extra large light technique of zero discharge is greatly reduced.
What the utility model can reach has the technical effect that：
1) it is overall to realize " zero-emission " effect that seawater resources are utilized, while desalination water is obtained, strong brine is carried out
Comprehensive utilization, has obtained various chemical products, improves the utilization rate of seawater, integrally reduce the operation of desalinization into
This, and industrialization income can be obtained.
2) comprehensive utilization of strong brine avoids the influence arranged outside strong brine to marine eco-environment system, protects ring
Border.
3) strong brine of desalinization passes through nanofiltration and reverse-osmosis circulating combined system, by strong brine concentration from 9 Baume degrees
15 Baume degrees are concentrated to, strong brine salt content is greatly improved, the processing water of follow-up salt making equipment is reduced, reduces energy
Consumption.
4) desalinization and concentration are carried out using full embrane method, high with automaticity, occupation of land is small, and separative efficiency height etc. is excellent
Point.
Brief description of the drawings
Full Membrane seawater desalination and the structure chart of strong brine utilization system that Fig. 1 provides for the utility model；
Fig. 2 is the structural representation of sea water desalinating unit in Fig. 1；
Fig. 3 is the structural representation of enrichment facility in Fig. 1.
Embodiment
The technical solution of the utility model is described in detail below in conjunction with the drawings and specific embodiments.
As shown in Figures 1 to 3, a kind of full Membrane seawater desalination and strong brine utilization system, including connected by pipeline
Sea water desalinating unit and enrichment facility；
The sea water desalinating unit includes reverse osmosis pretreatment device, first-stage reverse osmosis device and the desalination connected with pipeline
Pond；The desalination pond is connected with the filtered water delivery port of the first-stage reverse osmosis device；The first-stage reverse osmosis device
The delivery port of strong brine be connected with the enrichment facility；
The enrichment facility includes one-level nanofiltration device, two grades of nanofiltration devices and MVR crystallizers (Mechanical Vapor
Recompression Crystallizer)；The delivery port of the strong brine of the first-stage reverse osmosis device and the one-level nanofiltration
The water inlet connection of device；The delivery port of the condensed water of the one-level nanofiltration device is connected with the water inlet of MVR crystallizers；It is described
The delivery port of the filtered water of one-level nanofiltration device is connected with the water inlet of two grades of nanofiltration devices；Two grades of nanofiltration devices
The delivery port of filtered water is connected with the water inlet of the first-stage reverse osmosis device；The water outlet of the condensed water of two grades of nanofiltration devices
Mouth is connected with the water inlet of MVR crystallizers.
Further, the product that the MVR crystallizers are obtained obtains different chemical products through salt manufacturing and salt chemical engineering device.System
Salt and salt chemical engineering device, including the salt making equipment being sequentially connected, potassium chloride equipment, magnesium sulfate equipment, bromine equipment, magnesium chloride are set
It is standby.Using multiple-effect evaporation, adding halogen method, Air blowing, the system such as single effect evaporation produces sodium chloride, potassium chloride, magnesium sulfate, bromine and
The chemical products such as magnesium chloride.
It is preferred that, the reverse osmosis pretreatment device includes heat-exchange device, piping filter, the ultrafiltration dress being sequentially connected
Put, ultrafiltration pond and cartridge filter.
It is preferred that, the first-stage reverse osmosis device is one-level two-part reverse osmosis unit, can bring up to seawater recoveries
64%~67%, strong brine can be concentrated into 9 Baume degrees and more than.
The seawater passes through heat-exchange device, and temperature is brought up into preference temperature, (25 DEG C or so), can be good at improving
The processing water of membrane module, improves the aquifer yield of system, when particularly water temperature in winter is relatively low, ensure that system stable operation.
The piping filter, ultrafiltration apparatus, cartridge filter are reverse osmosis pretreatment device, outstanding in water removal for going
Float, colloid, the impurities in water such as large particulate matter prevents that reverse osmosis membrane structure from being destroyed, it is ensured that counter-infiltration stable operation.
The reverse osmosis unit includes one section of high-pressure pump, one section of RO membrane module, two sections of booster pumps, two sections of RO membrane modules, energy
Measure retracting device and desalination pond；
Preferably, the upstream end of the MVR crystallizers connects one end of energy recycle device, the energy recycle device
The other end is connected to the inlet end of the first-stage reverse osmosis device.Further preferably, strong brine enters before MVR crystallizers, through pipe
Road connection enters energy recycle device, and the energy recycle device is integrally formed with RO water inlet end high-pressure pumps.
The strong brine that one-level nanofiltration device and two grades of nanofiltration devices come out can defeated device, the pressure carried turn through energy
The mechanical energy of the high-pressure pump of first-stage reverse osmosis device is given, the one-level NF device rate of recovery is set to 62%~70%.
As shown in figure 3, in one embodiment of the present utility model, two grades of nanofiltration devices are two sections of nanofiltration devices of one-level.
The transmission water of the one-level NF devices enters two sections of nanofiltration devices of one-level by pipeline connection, first passes around two sections of NF high pressures of one-level
Pump, to being pressurized through water, subsequently into NF film devices.After separation concentration, two sections of NF device concentrated water concentration of one-level reach
15 Baume degrees, are connected by concentrated water pipeline with one-level NF concentrated water pipelines, into MVR crystallizers.Described two sections of NF devices of one-level
Desalinization RO device water inlet pipes are back to by pipeline connection through water.Two sections of NF device rate of recovery of one-level are set to 75%~
85%.
Preferably, the one-level NF devices may be configured as one section, two sections or multistage is set.
By technical scheme described in enrichment facility, original RO strong brines can be directly entered MVR crystallizers, ton water consumption
8kwh is reduced to from 17kwh, the energy consumption cost of extra large light technique of zero discharge is greatly reduced.
The full Membrane seawater desalination and the operation principle of strong brine utilization system are as follows：Seawater enters desalinization system
System, through processing, filtered water (fresh water) supply desalination water user uses, and strong brine enters enrichment facility, and the concentration of strong brine is carried
It is high to more than 15 Baume degrees when, into MVR crystallizers, obtain dense salt slurry, dense salt slurry enters salt manufacturing and salt chemical engineering device, changed
Chemical product.Specifically, seawater enters heat-exchange device, ocean temperature is maintained 25 DEG C or so, into piping filter, surpasses
Filter, filtered water is stand-by into ultrafiltration pond, and ultrafiltration water enters first-stage reverse osmosis device, through anti-through cartridge filter after supercharging
Filtered water after permeation filtration is fresh water, and into desalination pond, supply desalination water user uses；Dense salt after reverse osmosis concentration
Water enters one-level nanofiltration device, and the strong brine concentration through one-level nanofiltration device reaches more than 15 Baume degrees, through energy conversion device,
By pressure transmission to first-stage reverse osmosis device, the energy is saved, through MVR crystallizers, dense salt slurry is obtained, dense salt slurry enters salt manufacturing and salt
Chemical plant installations, obtains chemical products.The filtered water of one-level nanofiltration device enters two sections of nanofiltration devices of one-level, and filtered water enters one
The water inlet pipe of level counter-infiltration, condensed water is through energy conversion device, by pressure transmission to first-stage reverse osmosis device, saves the energy, warp
MVR crystallizers, obtain dense salt slurry, and dense salt slurry enters salt manufacturing and salt chemical engineering device, obtains chemical products.
Claims (7)
1. a kind of full Membrane seawater desalination and strong brine utilization system, including the sea water desalinating unit that is connected by pipeline and
Enrichment facility；It is characterized in that：
The sea water desalinating unit includes reverse osmosis pretreatment device, first-stage reverse osmosis device and the desalination water connected with pipeline
Pond；The desalination pond is connected with the filtered water delivery port of the first-stage reverse osmosis device；The first-stage reverse osmosis device
The delivery port of strong brine is connected with the enrichment facility；
The enrichment facility includes one-level nanofiltration device, two grades of nanofiltration devices and MVR crystallizers；The first-stage reverse osmosis device
The delivery port of strong brine is connected with the water inlet of the one-level nanofiltration device；The delivery port of the condensed water of the one-level nanofiltration device
It is connected with the water inlet of MVR crystallizers；The delivery port of the filtered water of the one-level nanofiltration device and two grades of nanofiltration devices
Water inlet is connected；The delivery port of the filtered water of two grades of nanofiltration devices is connected with the water inlet of the first-stage reverse osmosis device；
The delivery port of the condensed water of two grades of nanofiltration devices is connected with the water inlet of MVR crystallizers.
2. full Membrane seawater desalination as claimed in claim 1 and strong brine utilization system, it is characterised in that：The counter-infiltration
Pretreatment unit includes heat-exchange device, piping filter, ultrafiltration apparatus, ultrafiltration pond and the cartridge filter being sequentially connected.
3. full Membrane seawater desalination as claimed in claim 1 or 2 and strong brine utilization system, it is characterised in that：The MVR
One end of energy recycle device is connected before crystallizer, the other end of the energy recycle device is connected to the first-stage reverse osmosis
The inlet end of device.
4. full Membrane seawater desalination as claimed in claim 1 or 2 and strong brine utilization system, it is characterised in that：Also include
Salt manufacturing and salt chemical engineering device, the MVR crystallizers are connected with salt manufacturing and salt chemical engineering device.
5. full Membrane seawater desalination as claimed in claim 4 and strong brine utilization system, it is characterised in that：The salt manufacturing and
Salt chemical engineering device, including the salt making equipment being sequentially connected, potassium chloride equipment, magnesium sulfate equipment, bromine equipment, magnesium chloride equipment.
6. full Membrane seawater desalination as claimed in claim 1 or 2 and strong brine utilization system, it is characterised in that：Described one
Level reverse osmosis unit is one-level two-part reverse osmosis unit.
7. full Membrane seawater desalination as claimed in claim 1 or 2 and strong brine utilization system, it is characterised in that：Described one
Level nanofiltration device is one section, two sections or multistage；Two grades of nanofiltration devices are one section, two sections or multistage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621269170.0U CN206447713U (en) | 2016-11-25 | 2016-11-25 | Full Membrane seawater desalination and strong brine utilization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621269170.0U CN206447713U (en) | 2016-11-25 | 2016-11-25 | Full Membrane seawater desalination and strong brine utilization system |
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| Publication Number | Publication Date |
|---|---|
| CN206447713U true CN206447713U (en) | 2017-08-29 |
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| CN201621269170.0U Expired - Fee Related CN206447713U (en) | 2016-11-25 | 2016-11-25 | Full Membrane seawater desalination and strong brine utilization system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108887163A (en) * | 2018-07-05 | 2018-11-27 | 中山大学 | A method of utilizing seawater planting vegetables |
| CN108996791A (en) * | 2018-08-03 | 2018-12-14 | 山东和生海洋科技有限公司 | A kind of sea water desalination and comprehensive utilization new process |
-
2016
- 2016-11-25 CN CN201621269170.0U patent/CN206447713U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108887163A (en) * | 2018-07-05 | 2018-11-27 | 中山大学 | A method of utilizing seawater planting vegetables |
| CN108996791A (en) * | 2018-08-03 | 2018-12-14 | 山东和生海洋科技有限公司 | A kind of sea water desalination and comprehensive utilization new process |
| CN108996791B (en) * | 2018-08-03 | 2021-02-12 | 山东和生海洋科技有限公司 | Novel process for seawater desalination and comprehensive utilization |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170829 Termination date: 20171125 |