CN103253723A - Saline water desalting system - Google Patents
Saline water desalting system Download PDFInfo
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- CN103253723A CN103253723A CN2013102203716A CN201310220371A CN103253723A CN 103253723 A CN103253723 A CN 103253723A CN 2013102203716 A CN2013102203716 A CN 2013102203716A CN 201310220371 A CN201310220371 A CN 201310220371A CN 103253723 A CN103253723 A CN 103253723A
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- pipeline
- membrane distillation
- condenser
- distillation assembly
- container
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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
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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
- Y02A20/138—Water desalination using renewable energy
- Y02A20/142—Solar thermal; Photovoltaics
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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
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/208—Off-grid powered water treatment
- Y02A20/212—Solar-powered wastewater sewage treatment, e.g. spray evaporation
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
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- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention relates to a saline water desalting system which comprises a container, a condenser, a membrane distillation assembly, a heater and pipelines, wherein the container is provided with a bitter saline water inlet, a desalted wastewater discharge hole and a fresh water discharge hole, the condenser and the membrane distillation assembly are arranged inside the container, the heater is used for heating bitter saline water entering the end part of the membrane distillation assembly and generating steam; the pipelines include a first pipeline for communicating the bitter saline water inlet with the heater, a second pipeline for communicating the heater with the membrane distillation assembly and a third pipeline for communicating the membrane distillation assembly and the wastewater discharge hole; the condenser is positioned above the membrane distillation assembly; the heater is arranged at the outer side of the container and is a solar heater; and the condenser is arranged on the first pipeline. According to the saline water desalting system, on the one hand, as the solar heater is used, energy sources are saved; and on the other hand, the condenser is arranged on the first pipeline, heat energy is transferred onto the first pipeline by using a condensation and heat dissipation principle, so that the temperature of bitter saline water in the first pipeline is improved and resources are sufficiently utilized.
Description
Technical field
The invention belongs to the desalination techniques field of water, particularly a kind of saline-water reclamation system.
Background technology
Saline-water reclamation mainly is that the water that salt content is higher is desalinated, and the water after the desalination meets the standard of national Drinking Water, for example, and brackish water (or seawater).China's brackish water mainly is distributed in the north and the coastal region in east China, and the population that brackish water is drunk in the rural area has more than 3,800 ten thousand people, as Midwest such as Xinjiang, Inner Mongol, Gansu.Brackish water mainly is the mouthfeel bitterness, is difficult to directly drink, and long-term drinking causes gastrointestinal dysfunction, hypoimmunity.But because the west area limited energy is scarcely populated, be not suitable for large-scale purged with fresh water.
At present, saline-water reclamation method has following three kinds:
One, distillation method
Distillation method is exactly that brackish water or seawater heating are made it explosive evaporatoin, vapor condensation is become the process of fresh water again.Distillation method is the saline-water reclamation method that adopts the earliest, and its major advantage is that structure is simple, processing ease, gained fresh water water quality are good.Distillation method has many kinds, as multiple-effect evaporation, multistage flash evaporation, pressure steam distillation, membrane distillation etc.
Two, electroosmose process
Electroosmose process utilizes ion-exchange membrane under electric field action, separates the yin, yang ion in the salt solution, thereby salt concentration in the freshwater room is reduced and obtains a kind of membrane separation technique of fresh water.Electrodialysis unit is to utilize ion directional migration under effect of electric field, reaches the desalination purpose by the ion-exchange membrane of selecting perviousness.The electrodialysis technique of desalinating saline water is comparative maturity, major advantage such as have that technology is simple, desalination rate height, water producing cost are low, easy to operate, free from environmental pollution, but exist strict to water quality requirement, need carry out former water shortcoming such as pre-treatment.In the 50's of 20th century, the U.S., Britain begin this method is used for brackish water desalination, and China is used for brackish water desalination, industrial pure water and ultrapure water manufacturing in the 80's of 20th century with this method.
Three, reverse osmosis method
Reverse osmosis is to add the pressure higher than naturally osmotic on one side in strong solution, reverse the naturally osmotic direction, the ion in the solution is pressed onto the other side of semi-permeable membranes, this is opposite with natural normal process of osmosis, so be referred to as " reverse osmosis ", this device is called reverse osmosis unit.Reverse osmosis brackish water desalination method can be removed solvability salt and the colloid microorganism more than 99 % and the organism etc. more than 90 % from water.Compare with other water treatment method have no phase-state change, normal-temperature operation, equipment are simple, high efficiency, occupation of land less, advantage such as easy to operate, consuming little energy, wide accommodation, level of automation height and effluent characteristics be good.
In above-mentioned distillation method process, basically be to adopt well heater that brackish water or seawater are heated, brackish water flows in the membrane distillation assembly, but because the water vapor pressure of the warm side aqueous solution and membrane interface is higher than cold side, water vapor will see through fenestra, to the external diffusion of membrane distillation assembly, steam runs into the condenser cooling, form the globule, then the globule is collected, form fresh water.But in whole process, have the following disadvantages:
(1), need to adopt well heater, realize the evaporation of brackish water or seawater, cause resource consumption bigger, production cost is higher;
(2), the steam that evaporates directly is cooled to water, it gives out heat and does not obtain fully utilizing, and causes the wasting of resources.
Summary of the invention
Technical problem to be solved by this invention is to overcome the deficiencies in the prior art, and a kind of improved saline-water reclamation system is provided.
For solving above technical problem, the present invention takes following technical scheme:
A kind of saline-water reclamation system, it comprises having the salt water inlet, discharge of wastewater mouth after the desalination and the container of fresh water relief outlet, be arranged on condenser and the membrane distillation assembly of internal tank, for the well heater of the salt solution heating that will enter membrane distillation assembly end and generation steam and respectively with the salt water inlet, well heater, the pipeline that membrane distillation assembly and discharge of wastewater mouth are connected, pipeline comprises for first pipeline that the salt water inlet is connected with well heater, the 3rd pipeline that is used for second pipeline that well heater is connected with the membrane distillation assembly and is used for the membrane distillation assembly is connected with the discharge of wastewater mouth, condenser is positioned at the top of membrane distillation assembly, well heater is arranged on the outside of container, and well heater is solar heater, and condenser is arranged on first pipeline.
Concrete enforcement and preferred aspect according to the present invention, the airtight setting of container prevents that effectively ambient atmos from entering in the container and vapor mixing, causes the water that condenses, purity is not high.The material of container is stainless steel simultaneously, and is high temperature resistant strong with corrosion resistance.
Further, be provided with the breather hole of 0.22 μ m at the top of container, be convenient to water-fast gas in the container (gas that is difficult for being liquefied) is discharged from breather hole, simultaneously, prevent that effectively bacterium from entering in the container, the water after the desalination is polluted.
Another concrete enforcement and preferred aspect according to the present invention, solar heater can be heated to the temperature that flows to the salt solution in the solar heater from the salt water inlet 70 ℃～80 ℃, simultaneously, condenser is shell-and tube condenser, and the tube bank of shell-and tube condenser parallels setting with the membrane distillation assembly.
Further preferably, the material of condenser is stainless steel.
Because the enforcement of above technical scheme, the present invention compared with prior art has following advantage:
One aspect of the present invention heats the salt solution that flows to the membrane distillation assembly save energy by solar heater; On the other hand condenser is arranged on first pipeline that the salt water inlet flows to well heater, thereby will act on the steam liquefaction of condenser surface, and with on thermal power transfer to the first pipeline, make the brine temp that is in first pipeline improve, and then the energy waste of saving solar heater, taking full advantage of resource, the present invention simultaneously is simple in structure, it is convenient to implement, and cost is lower.
Description of drawings
Fig. 1 is the schema according to saline-water reclamation of the present invention system;
Wherein: 1, container; 10, salt water inlet; 11, discharge of wastewater mouth; 12, fresh water relief outlet; 13, breather hole; 2, condenser; 3, membrane distillation assembly; 4, well heater (sun power); 5, pipeline; 50, first pipeline; 51, second pipeline; 52, the 3rd pipeline.
Embodiment
As shown in Figure 1, the saline-water reclamation system that this example provides, it comprise have salt water inlet 10, the desalination after discharge of wastewater mouth 11 and the container 1 of fresh water relief outlet 12, be arranged on condenser 2 and the membrane distillation assembly 3 of container 1 inside, be used for to enter the salt solution heating of membrane distillation assembly 3 ends and producing the well heater 4 of steam and the pipeline 5 that respectively salt water inlet, well heater, membrane distillation assembly and discharge of wastewater mouth is connected.
In this example, container 1 is sealed shape; Condenser 2 is shell-and tube condenser, and the tube bank of shell-and tube condenser parallels setting with membrane distillation assembly 3; Membrane distillation assembly 3 adopts those forms well known in the art (not doing detailed description at this); Well heater 4 adopts solar heaters, and can be with the temperature increase to 70 of salt solution ℃～80 ℃; The 3rd pipeline 52 that pipeline 5 comprises for first pipeline 50 that salt water inlet 10 is connected with well heater 4, is used for second pipeline 51 that well heater 4 is connected with membrane distillation assembly 3 and is used for membrane distillation assembly 3 is connected with discharge of wastewater mouth 11.
Above-mentioned condenser 2 is positioned at the top of membrane distillation assembly 3, and is arranged on first pipeline 50, and well heater 4 is arranged on the outside of container 1, and the material of container 1 and condenser 2 is stainless steel simultaneously.In addition, because the airtight setting of container, prevent that effectively ambient atmos from entering in the container and vapor mixing, cause the water that condenses, purity is not high, but contain the gas that part can not be liquefied in the steam, also can't in container 1, discharge, therefore, in this example, having offered diameter at the top of container 1 is the breather hole 13 of 0.22 μ m, be convenient to water-fast gas (gas that is difficult for being liquefied) in the container 1 is discharged from breather hole 13, because the diameter of breather hole 13 is 0.22 μ m, effectively places bacterium and enter in the container 1 simultaneously, the water after the desalination is polluted.
The concrete enforcement of the saline-water reclamation system of present embodiment is as follows:
Salt solution flows through condenser 2 from first pipeline 50, and flow to well heater 4, after well heater 4 heating, temperature is that 70 ℃～80 ℃ brine stream are in membrane distillation assembly 3, water vapor pressure according to the membrane distillation assembly 3 warm side aqueous solution and membrane interface is higher than cold side, water vapor will see through fenestra, 3 diffusions outside the membrane distillation assembly, hot gas rises and runs into condenser 2, and gas water-soluble in the steam liquefies, form the globule, splash into the bottom of container 1, then, fresh water is discharged from the fresh water discharge outlet 11 of container bottom, used by the crowd, water-fast gas (gas that is difficult for being liquefied) is discharged from breather hole 13 in the steam simultaneously.
In sum, one aspect of the present invention heats the salt solution that flows to the membrane distillation assembly save energy by solar heater; On the other hand condenser is arranged on first pipeline that the salt water inlet flows to well heater, thereby will act on the steam liquefaction of condenser surface, and with on thermal power transfer to the first pipeline, make the brine temp that is in first pipeline improve, and then the energy waste of saving solar heater, taking full advantage of resource, the present invention simultaneously is simple in structure, it is convenient to implement, and cost is lower.
Above-described embodiment is used for the present invention that explains, rather than limits the invention, and in the protection domain of spirit of the present invention and claim, any modification and change to the present invention makes all should fall within the scope of protection of the present invention
Claims (7)
1. saline-water reclamation system, it comprises having salt water inlet (10), discharge of wastewater mouth (11) after the desalination and the container (1) of fresh water relief outlet (12), be arranged on described container (1) inner condenser (2) and membrane distillation assembly (3), for the well heater (4) of the described salt solution heating that will enter described membrane distillation assembly (3) end and generation steam and respectively with described salt water inlet (10), described well heater (4), the pipeline (5) that described membrane distillation assembly (3) and discharge of wastewater mouth (11) are connected, described pipeline (5) comprises first pipeline (50) that is connected with described well heater (4) for described salt water inlet (10), the 3rd pipeline (52) that is used for second pipeline (51) that described well heater (4) is connected with described membrane distillation assembly (3) and is used for described membrane distillation assembly (3) is connected with described discharge of wastewater mouth (11), described condenser (3) is positioned at the top of described membrane distillation assembly (3), it is characterized in that: described well heater (4) is arranged on the outside of described container (1), and described well heater (4) is solar heater, and described condenser (2) is arranged on described first pipeline (50).
2. saline-water reclamation according to claim 1 system is characterized in that: the airtight setting of described container (1).
3. saline-water reclamation according to claim 1 and 2 system, it is characterized in that: the material of described container (1) is stainless steel.
4. according to claim 2 or 3 described saline-water reclamation systems, it is characterized in that: the top of described container (1) is provided with the breather hole (13) of 0.22 μ m.
5. saline-water reclamation according to claim 1 system, it is characterized in that: described solar heater can be heated to 70 ℃～80 ℃ with the temperature that flows to the described salt solution in the described solar heater from described salt water inlet (10).
6. saline-water reclamation according to claim 1 system, it is characterized in that: described condenser (2) is shell-and tube condenser, and the tube bank of described shell-and tube condenser parallels setting with described membrane distillation assembly (3).
7. according to claim 1 or 6 described saline-water reclamation systems, it is characterized in that: the material of described condenser (2) is stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310220371.6A CN103253723B (en) | 2013-06-05 | 2013-06-05 | Saline water desalting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310220371.6A CN103253723B (en) | 2013-06-05 | 2013-06-05 | Saline water desalting system |
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| Publication Number | Publication Date |
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| CN103253723A true CN103253723A (en) | 2013-08-21 |
| CN103253723B CN103253723B (en) | 2014-09-17 |
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| CN201310220371.6A Active CN103253723B (en) | 2013-06-05 | 2013-06-05 | Saline water desalting system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019107646A (en) * | 2017-12-19 | 2019-07-04 | コリア・インスティテュート・オブ・サイエンス・アンド・テクノロジー | Float type membrane distillation apparatus |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1396120A (en) * | 2001-07-13 | 2003-02-12 | 清华大学 | Membrane distillation type water treating apparatus using solar energy or afterheat |
| CN101204641A (en) * | 2006-12-22 | 2008-06-25 | 天津工业大学 | Treating system for film evaporating concentrated liquid and method therefor |
| CN101955286A (en) * | 2010-09-16 | 2011-01-26 | 谷水（北京）环境工程技术有限公司 | Process for desalinating strong brine |
-
2013
- 2013-06-05 CN CN201310220371.6A patent/CN103253723B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1396120A (en) * | 2001-07-13 | 2003-02-12 | 清华大学 | Membrane distillation type water treating apparatus using solar energy or afterheat |
| CN101204641A (en) * | 2006-12-22 | 2008-06-25 | 天津工业大学 | Treating system for film evaporating concentrated liquid and method therefor |
| CN101955286A (en) * | 2010-09-16 | 2011-01-26 | 谷水（北京）环境工程技术有限公司 | Process for desalinating strong brine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019107646A (en) * | 2017-12-19 | 2019-07-04 | コリア・インスティテュート・オブ・サイエンス・アンド・テクノロジー | Float type membrane distillation apparatus |
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| CN103253723B (en) | 2014-09-17 |
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Owner name: SUZHOU HUACHEN WATER TREAT FACILITIES CO., LTD. Free format text: FORMER NAME: TAICANG HUACHEN WATER TREATMENT FACILITIES CO., LTD. |
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Address after: 215434 No. 16 Hongyun Road, pontoon bridge, Taicang, Jiangsu Patentee after: TAICANG HUACHEN DECONTAMINATE DEVICE CO., LTD. Address before: 215434 Zhongxing Road, Taicang District, Jiangsu, Suzhou Patentee before: Taicang HuaChen Water Treatment Facilities Co., Ltd. |