CN114524478B - High-efficiency photothermal conversion brine desalination and fresh water recovery device - Google Patents
High-efficiency photothermal conversion brine desalination and fresh water recovery device Download PDFInfo
- Publication number
- CN114524478B CN114524478B CN202210044157.9A CN202210044157A CN114524478B CN 114524478 B CN114524478 B CN 114524478B CN 202210044157 A CN202210044157 A CN 202210044157A CN 114524478 B CN114524478 B CN 114524478B
- Authority
- CN
- China
- Prior art keywords
- photothermal conversion
- conversion film
- filter paper
- floating plate
- fresh water
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 53
- 239000012267 brine Substances 0.000 title claims abstract description 23
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 title claims abstract description 23
- 239000013505 freshwater Substances 0.000 title claims abstract description 15
- 238000011084 recovery Methods 0.000 title claims abstract description 15
- 238000010612 desalination reaction Methods 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000007667 floating Methods 0.000 claims abstract description 22
- 239000006260 foam Substances 0.000 claims abstract description 21
- 239000011888 foil Substances 0.000 claims abstract description 15
- 239000000243 solution Substances 0.000 claims description 27
- 229910001220 stainless steel Inorganic materials 0.000 claims description 15
- 239000010935 stainless steel Substances 0.000 claims description 15
- MMCPOSDMTGQNKG-UHFFFAOYSA-N anilinium chloride Chemical compound Cl.NC1=CC=CC=C1 MMCPOSDMTGQNKG-UHFFFAOYSA-N 0.000 claims description 14
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 8
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 6
- 229920000767 polyaniline Polymers 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 4
- 244000137852 Petrea volubilis Species 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 238000011033 desalting Methods 0.000 claims description 3
- 238000011010 flushing procedure Methods 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 abstract description 20
- 238000000034 method Methods 0.000 abstract description 9
- 239000013078 crystal Substances 0.000 abstract description 8
- 238000002425 crystallisation Methods 0.000 abstract description 6
- 230000008025 crystallization Effects 0.000 abstract description 6
- 239000006227 byproduct Substances 0.000 abstract description 3
- 238000004064 recycling Methods 0.000 abstract description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 12
- 239000011780 sodium chloride Substances 0.000 description 6
- 238000001704 evaporation Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 239000012528 membrane Substances 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009285 membrane fouling Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/14—Treatment of water, waste water, or sewage by heating by distillation or evaporation using solar energy
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The invention discloses a high-efficiency photothermal conversion brine desalination and fresh water recovery device, which comprises a photothermal conversion film, wherein the outer wall of the photothermal conversion film is coated with filter paper, the bottom of the photothermal conversion film is provided with a diffuse reflection foil, the length of the filter paper is longer than that of the photothermal conversion film, the outer part of the filter paper is sleeved with a foam floating plate, the foam floating plate is provided with a shell, and the top of the shell is provided with a convex lens. The method provided by the invention is environment-friendly by treating the strong brine in a high-temperature crystallization mode and recycling the byproduct crystal salt and condensed water.
Description
Technical Field
The invention belongs to the technical field of brine desalination and seawater desalination, and relates to a high-efficiency photothermal conversion brine desalination and fresh water recovery device.
Background
The proper disposal of modern industry-generated brine (including the industries of sea water desalination, food processing, mining, power generation, etc.) has heretofore been a significant challenge. The above industries are directed to the varying degrees of chemical hazard to the environment of the roughening treatment of salt-containing byproducts. The treatment process of the wastewater mainly adopts reverse osmosis treatment, namely pushing water out of the membrane to filter salt. However, the problems of salt scaling and membrane fouling caused by this process are difficult to deal with.
Disclosure of Invention
The invention aims to provide a high-efficiency photothermal conversion brine desalination and fresh water recovery device, which solves the problems that the existing treatment device is easy to cause membrane pollution and salt scaling.
The technical scheme includes that the efficient photothermal conversion brine desalination and fresh water recovery device comprises a photothermal conversion film, wherein filter paper is coated on the outer wall of the photothermal conversion film, a diffuse reflection foil is arranged at the bottom of the photothermal conversion film, the length of the filter paper is larger than that of the photothermal conversion film, a foam floating plate is sleeved outside the filter paper, a shell is arranged on the foam floating plate, and a convex lens is arranged at the top of the shell.
The present invention is also characterized in that,
The preparation method of the photo-thermal conversion film specifically comprises the following steps: soaking a stainless steel mesh in an aniline hydrochloride solution, stirring by using a magnetic stirrer to enable the aniline hydrochloride solution to be in full contact with the stainless steel mesh, then dripping ammonium persulfate into the aniline hydrochloride solution, continuously stirring to obtain a polyaniline solution, standing, taking out the stainless steel mesh after the surface of the stainless steel mesh is completely covered with polyaniline, polishing a single side by using sand paper, flushing the surface by using deionized water, and taking the polished side as an outer wall to obtain the photothermal conversion film.
The concentration of the aniline hydrochloride solution is 1mol/L, and the volume ratio of the aniline hydrochloride solution to the ammonium persulfate is 1:0.01.
Stirring was continued for a period of 5min.
The preparation method of the diffuse reflection foil specifically comprises the following steps: and placing the metal foil on a 500-mesh stainless steel screen, and rolling for 20 times to obtain the diffuse reflection foil.
The diameter of the shell is the same as that of the foam floating plate, and the bottom end of the shell is bonded with the outer wall of the foam floating plate.
One end of the shell, which is close to the foam floating plate, is provided with a water outlet, and a valve is arranged on the water outlet.
A water-proof film is arranged between the light-heat conversion film and the filter paper.
The bottom end of the filter paper is 5cm longer than the bottom end of the photothermal conversion film.
The high-efficiency photothermal conversion brine desalting and fresh water recovery device has the advantages that the high-efficiency photothermal conversion brine desalting and fresh water recovery device is used for treating the strong brine in a high-temperature crystallization mode and recovering the byproduct crystalline salt and condensed water, when the strong brine is treated, the investment is small, the process is simple, the operation is convenient, the industrial brine can be directly treated by using the energy of solar radiation, other energy supply is not needed, and the treatment process can meet the requirements of environmental protection.
Drawings
FIG. 1 is a schematic diagram of a high-efficiency photothermal conversion brine desalination and fresh water recovery device according to the present invention.
In the figure, 1a light-heat conversion film, 2a water-proof film, 3 a filter paper, 4a diffuse reflection foil, 5a foam floating plate, 6 a shell, 7 a convex lens and 8 a water outlet.
Detailed Description
The invention will be described in detail below with reference to the drawings and the detailed description.
The invention provides a high-efficiency photothermal conversion brine desalination and fresh water recovery device, the structure is shown in figure 1, the device comprises a photothermal conversion film 1, filter paper 3 is coated on the outer wall of the photothermal conversion film 1, a water-proof film 2 is arranged between the photothermal conversion film 1 and the filter paper 3, a diffuse reflection foil 4 is arranged at the bottom of the photothermal conversion film 1, the length of the filter paper 3 is longer than that of the photothermal conversion film 1, the bottom end of the specific filter paper 3 is 5cm longer than that of the photothermal conversion film 1, the filter paper 3 is used for absorbing brine to be treated, a foam floating plate 5 is sleeved outside the filter paper 3, the device floats on a brine solution, the bottom end of a shell 6 is sealed with the outer wall of the foam floating plate 5, the diameter of the shell 6 is the same as that of the foam floating plate 5, a water outlet 8 is arranged at one end of the shell 6, which is close to the foam floating plate 5, a valve is arranged at the water outlet 8, the water outlet 8 is connected with a sunlight pipe for recovering the collected condensate water, and a convex lens 7 is arranged at the top of the shell 6 for gathering.
The preparation method of the photo-thermal conversion film 1 specifically comprises the following steps: soaking a stainless steel mesh in an aniline hydrochloride solution with the concentration of 1mol/L, stirring by using a magnetic stirrer to enable the aniline hydrochloride solution to be in full contact with the stainless steel mesh, then dripping ammonium persulfate ((NH 4)2S2O8) into the aniline hydrochloride solution, wherein the volume ratio of the aniline hydrochloride solution to the ammonium persulfate is 1:0.01, continuing stirring for 5min to obtain a polyaniline solution, standing, taking out the stainless steel mesh after the surface of the stainless steel mesh is completely covered with polyaniline, polishing one side by using sand paper, flushing the surface by using deionized water, and taking the polished side as an outer wall to obtain the photothermal conversion film 1.
The preparation method of the diffuse reflection foil 4 specifically comprises the following steps: and (3) placing the metal foil on a 500-mesh stainless steel screen, and rolling for 20 times to enable the surface of the metal foil to be uneven, so that diffuse reflection can be formed, and a diffuse reflection foil 4 is obtained.
When the device is used, the device is placed in a storage tank filled with salt water, the bottom end of the filter paper 3 is immersed in the salt water, the foam floating plate 5 enables the whole device to be in a floating state, after long-time sunlight irradiation, the photo-thermal conversion film 1 with good photo-thermal conversion capability absorbs solar energy and converts the solar energy into heat energy to heat the surface of the filter paper 3, the salt water rises to the upper part of the filter paper 3 through capillary action, the evaporation and crystallization process of the salt water is accelerated by high temperature, the generated crystal salt is condensed on the outer surface of the filter paper 3, and water vapor is condensed to the bottom under the action of temperature difference and is recovered through the water outlet 8.
Example 1
The 7% NaCl solution is injected into the solution storage tank, the filter paper 3 below the foam floating plate 5 is immersed in the NaCl solution, after long-time solar radiation, the photo-thermal conversion film 1 with good photo-thermal conversion capability absorbs solar energy, the photo-thermal energy is converted into heat energy to heat the surface of the filter paper, the salt water rises to the upper part of the filter paper through capillary action, the evaporation and crystallization process of the salt water is accelerated by high temperature, the generated crystallized salt is condensed on the outer surface of the filter paper, the water vapor is condensed in the shell 6 under the action of temperature difference, the condensed water flows down, the recovered NaCl crystals are recovered, and the recovery rate of the NaCl crystals is 80% -90%.
Example 2
Injecting 6% KCl solution into a solution storage tank, ensuring that filter paper 3 below a foam floating plate 5 is immersed in NaCl solution, absorbing solar energy by a photo-thermal conversion film 1 with good photo-thermal conversion capability after long-time solar radiation, converting the solar energy into heat energy to heat the surface of the filter paper, lifting salt water to the upper part of the filter paper through capillary action, accelerating the evaporation and crystallization process of the salt water at high temperature, condensing the generated crystal salt on the outer surface of the filter paper, condensing water vapor in a shell 6 under the action of temperature difference, recycling the water vapor, and recovering KCl crystals at 75-85%.
Example 3
The 8% MgSO 4 solution is injected into the solution storage tank, the filter paper 3 below the foam floating plate 5 is immersed in NaCl solution, after long-time solar radiation, the photo-thermal conversion film 1 with good photo-thermal conversion capability absorbs solar energy, the photo-thermal energy is converted into heat energy to heat the surface of the filter paper, salt water rises to the upper part of the filter paper through capillary action, the evaporation and crystallization process of the salt water is accelerated by high temperature, the generated crystal salt is condensed on the outer surface of the filter paper, water vapor is condensed in the shell 6 under the action of temperature difference, the condensation flows down, and the recovery rate of MgSO 4 crystals is 70% -80%.
Claims (6)
1. The efficient photothermal conversion brine desalination and fresh water recovery device is characterized by comprising a photothermal conversion film (1), wherein the outer wall of the photothermal conversion film (1) is coated with filter paper (3), the bottom of the photothermal conversion film (1) is provided with a diffuse reflection foil (4), the length of the filter paper (3) is greater than that of the photothermal conversion film (1), the outer part of the filter paper (3) is sleeved with a foam floating plate (5), the foam floating plate (5) is provided with a shell (6), and the top of the shell (6) is provided with a convex lens (7);
the preparation method of the photo-thermal conversion film (1) specifically comprises the following steps: soaking a stainless steel mesh in an aniline hydrochloride solution, stirring by using a magnetic stirrer to enable the aniline hydrochloride solution to be in full contact with the stainless steel mesh, then dripping ammonium persulfate into the aniline hydrochloride solution, continuously stirring to obtain a polyaniline solution, standing, taking out the stainless steel mesh after the surface of the stainless steel mesh is completely covered with polyaniline, polishing a single side by using sand paper, flushing the surface by using deionized water, and taking the polished side as an outer wall to obtain the photothermal conversion film (1);
the preparation method of the diffuse reflection foil (4) specifically comprises the following steps: placing a metal foil on a 500-mesh stainless steel screen, and rolling for 20 times to obtain a diffuse reflection foil (4);
A water-proof film (2) is arranged between the photo-thermal conversion film (1) and the filter paper (3).
2. The apparatus for desalinating and recovering fresh water by high-efficiency photothermal conversion brine according to claim 1, wherein the concentration of the aniline hydrochloride solution is 1mol/L, and the volume ratio of the aniline hydrochloride solution to ammonium persulfate is 1:0.01.
3. The apparatus for desalinating and recovering fresh water by high-efficiency photothermal conversion according to claim 1, wherein the stirring is continued for 5min.
4. The efficient photothermal conversion brine desalination and fresh water recovery device according to claim 1, wherein the diameter of the housing (6) is the same as the diameter of the foam floating plate (5), and the bottom end of the housing (6) is bonded to the outer wall of the foam floating plate (5).
5. The efficient photothermal conversion brine desalination and fresh water recovery device according to claim 1, wherein a water outlet (8) is arranged at one end of the housing (6) close to the foam floating plate (5), and a valve is arranged on the water outlet (8).
6. The device for desalting and recovering brine by high-efficiency photothermal conversion according to claim 1, wherein the bottom end of the filter paper (3) is 5cm longer than the bottom end of the photothermal conversion film (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210044157.9A CN114524478B (en) | 2022-01-14 | 2022-01-14 | High-efficiency photothermal conversion brine desalination and fresh water recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210044157.9A CN114524478B (en) | 2022-01-14 | 2022-01-14 | High-efficiency photothermal conversion brine desalination and fresh water recovery device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114524478A CN114524478A (en) | 2022-05-24 |
| CN114524478B true CN114524478B (en) | 2024-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210044157.9A Active CN114524478B (en) | 2022-01-14 | 2022-01-14 | High-efficiency photothermal conversion brine desalination and fresh water recovery device |
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| CN (1) | CN114524478B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106298066A (en) * | 2016-08-17 | 2017-01-04 | 梅庆波 | A kind of preparation method of flexible transparent conducting film |
| CN107089697A (en) * | 2017-06-06 | 2017-08-25 | 西安工程大学 | Floatation type solar energy sea water desalination apparatus |
| CN108569809A (en) * | 2017-03-15 | 2018-09-25 | 钟多琳 | A kind of sea water desalination or sewage-treatment plant and method based on solar energy |
| CN113184940A (en) * | 2021-04-22 | 2021-07-30 | 江南大学 | Photo-thermal conversion material and application thereof in seawater desalination and salt recovery |
-
2022
- 2022-01-14 CN CN202210044157.9A patent/CN114524478B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106298066A (en) * | 2016-08-17 | 2017-01-04 | 梅庆波 | A kind of preparation method of flexible transparent conducting film |
| CN108569809A (en) * | 2017-03-15 | 2018-09-25 | 钟多琳 | A kind of sea water desalination or sewage-treatment plant and method based on solar energy |
| CN107089697A (en) * | 2017-06-06 | 2017-08-25 | 西安工程大学 | Floatation type solar energy sea water desalination apparatus |
| CN113184940A (en) * | 2021-04-22 | 2021-07-30 | 江南大学 | Photo-thermal conversion material and application thereof in seawater desalination and salt recovery |
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| Publication number | Publication date |
|---|---|
| CN114524478A (en) | 2022-05-24 |
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