CN114524478A - Efficient photothermal conversion saline water desalination and fresh water recovery device - Google Patents
Efficient photothermal conversion saline water desalination and fresh water recovery device Download PDFInfo
- Publication number
- CN114524478A CN114524478A CN202210044157.9A CN202210044157A CN114524478A CN 114524478 A CN114524478 A CN 114524478A CN 202210044157 A CN202210044157 A CN 202210044157A CN 114524478 A CN114524478 A CN 114524478A
- Authority
- CN
- China
- Prior art keywords
- photothermal conversion
- conversion film
- filter paper
- water
- stainless steel
- Prior art date
- 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.)
- Granted
Links
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 50
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 239000013505 freshwater Substances 0.000 title claims abstract description 17
- 238000010612 desalination reaction Methods 0.000 title claims abstract description 13
- 238000011084 recovery Methods 0.000 title claims abstract description 13
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 title abstract description 18
- 239000011780 sodium chloride Substances 0.000 title abstract description 13
- 239000006260 foam Substances 0.000 claims abstract description 21
- 150000003839 salts Chemical class 0.000 claims abstract description 21
- 238000007667 floating Methods 0.000 claims abstract description 20
- 239000011888 foil Substances 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 11
- 239000000243 solution Substances 0.000 claims description 27
- 229910001220 stainless steel Inorganic materials 0.000 claims description 16
- 239000010935 stainless steel Substances 0.000 claims description 16
- 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
- 239000002184 metal Substances 0.000 claims description 4
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 238000005253 cladding Methods 0.000 claims 1
- 239000012266 salt solution Substances 0.000 claims 1
- 239000012267 brine Substances 0.000 abstract description 7
- 238000002425 crystallisation Methods 0.000 abstract description 7
- 230000008025 crystallization Effects 0.000 abstract description 7
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 abstract description 7
- 239000006227 byproduct Substances 0.000 abstract description 3
- 238000009833 condensation Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L magnesium sulphate Substances [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000005374 membrane filtration Methods 0.000 description 1
- 238000009285 membrane fouling Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000002156 mixing 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
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Images
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
Abstract
The invention discloses a high-efficiency photothermal conversion saline water 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 greater 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 the top of the shell is provided with a convex lens. The method treats the strong brine by high-temperature crystallization, and recovers the by-products of crystallized salt and condensed water, thereby being green and environment-friendly.
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 treatment of brine produced by modern industries, including the industries of sea water desalination, food processing, mining, power generation, etc., has heretofore been a significant challenge. The above industry poses varying degrees of chemical hazards to the environment for harsh treatment of salt-containing by-products. The treatment process of the wastewater mainly adopts reverse osmosis treatment, namely pushing water out of membrane filtration salt. But the problems of salt fouling and membrane fouling due to this process are difficult to handle.
Disclosure of Invention
The invention aims to provide a high-efficiency photothermal conversion saline water desalination and fresh water recovery device, which solves the problems of membrane pollution and salt scaling easily caused by the conventional treatment device.
The invention adopts the technical scheme that the efficient photothermal conversion saline water desalination and fresh water recovery device 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 greater 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 the top of the shell is provided with a convex lens.
The present invention is also characterized in that,
the preparation method of the photothermal conversion film comprises the following steps: soaking the 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 dropping ammonium persulfate into the aniline hydrochloride solution, continuing 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 one side by using abrasive paper, washing 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 5 min.
The preparation method of the diffuse reflection foil comprises the following steps: the metal foil was placed on a 500 mesh stainless steel screen and rolled back and forth 20 times to obtain a 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 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 photothermal 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 efficient photothermal conversion brine desalination and fresh water recovery device has the advantages that the concentrated brine is treated in a high-temperature crystallization mode, and byproducts of crystallized salt and condensed water are recovered, so that the investment is small, the process is simple, the operation is convenient and fast, the industrial brine can be treated by directly utilizing 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 view showing the construction of the apparatus for desalinating saltwater and recovering fresh water by high efficiency photothermal conversion according to the present invention.
In the figure, 1, a photothermal conversion film, 2, a water-stop film, 3, filter paper, 4, a diffuse reflection foil, 5, a foam floating plate, 6, a shell, 7, a convex lens and 8, a water outlet are arranged.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The invention provides a high-efficiency photothermal conversion saline water desalination and fresh water recovery device, which has a structure shown in figure 1 and comprises a photothermal conversion film 1, wherein the outer wall of the photothermal conversion film 1 is coated with filter paper 3, a water-proof film 2 is arranged between the photothermal conversion film 1 and the 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 bottom end of the filter paper 3 is 5cm longer than the bottom end of the photothermal conversion film 1 and is used for adsorbing saline water to be treated, a foam floating plate 5 is sleeved outside the filter paper 3 to ensure that the device floats on the saline water solution, the bottom end of a shell 6 is bonded with the outer wall of the foam floating plate 5 for sealing to prevent treated condensate water from leaking outwards, the diameter of the shell 6 is the same as that of the foam floating plate 5, one end of the shell 6 close to the foam floating plate 5 is provided with a water outlet 8, and a valve is arranged on the water outlet 8, the water outlet 8 is connected with a water pipe to recover collected condensate water, and the top of the shell 6 is provided with a convex lens 7 for gathering sunlight.
The preparation method of the photothermal conversion film 1 specifically comprises the following steps: soaking the stainless steel mesh in 1mol/L aniline hydrochloride solution, stirring with a magnetic stirrer to make the aniline hydrochloride solution fully contact with the stainless steel mesh, and dripping ammonium persulfate ((NH) into the aniline hydrochloride solution4)2S2O8) And the volume ratio of the aniline hydrochloride solution to the ammonium persulfate is 1:0.01, continuously 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 of the stainless steel mesh by using abrasive paper, washing the surface by using deionized water, and taking the polished side as the outer wall to obtain the photothermal conversion film 1.
The preparation method of the diffuse reflection foil 4 comprises the following steps: and (3) placing the metal foil on a stainless steel screen mesh with 500 meshes to roll back and forth for 20 times to enable the surface of the metal foil to be uneven, so that diffuse reflection can be formed, and obtaining the diffuse reflection foil 4.
When the device is used, the device is placed into a storage tank filled with salt water, the bottom end of the filter paper 3 is soaked 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 photothermal conversion film 1 with good photothermal conversion capacity absorbs solar energy, the light energy is converted 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 due to high temperature, the generated crystal salt is condensed on the outer surface of the filter paper 3, and water vapor in the shell 6 flows to the bottom through condensation under the action of temperature difference and is recovered through the water outlet 8.
Example 1
Inject 7% NaCl solution into the solution holding tank in, guarantee that 5 below filter paper 3 of foam floating plate submerge in NaCl solution, after long-time solar radiation, the photothermal conversion film 1 who has good photothermal conversion ability absorbs solar energy, convert light energy into heat energy heating filter paper surface, salt water rises to filter paper upper portion through capillary action, high temperature makes the evaporation crystallization process of salt water accelerate, the crystallized salt of production condenses at the filter paper surface, vapor is in shell 6, the condensation flows down under the effect of the difference in temperature, retrieve, the rate of recovery of NaCl crystal is at 80% ~ 90%.
Example 2
Inject 6% KCl solution into the solution holding tank, guarantee that 5 below filter paper 3 of foam floating plate submerges in NaCl solution, after long-time solar radiation, the photothermal conversion film 1 that has good photothermal conversion ability absorbs solar energy, convert light energy into heat energy heating filter paper surface, salt water rises to filter paper upper portion through capillary action, high temperature makes the evaporation crystallization process of salt water accelerate, the crystalline salt that produces condenses at the filter paper surface, vapor is in shell 6, the condensation flows down under the effect of the difference in temperature, retrieve, the rate of recovery of KCl crystal is at 75% ~ 85%.
Example 3
Mixing 8% MgSO4Solution is injected into the solution storage tank, guarantee that 5 below filter paper 3 of foam floating plate submerges in NaCl solution, after long-time solar radiation, light-heat conversion film 1 who has good light-heat conversion ability absorbs solar energy, convert light energy into heat energy heating filter paper surface, salt water rises to filter paper upper portion through capillary action, high temperature makes the evaporation crystallization process of salt water accelerate, the crystallization salt that produces condenses at the filter paper surface, vapor is in shell 6, under the effect of difference in temperature condensation flow down, retrieve, MgSO4The recovery rate of the crystal is 70-80%.
Claims (9)
1. High-efficient light and heat conversion salt solution desalination and fresh water recovery unit, its characterized in that includes light and heat conversion film (1), the cladding has filter paper (3) on the outer wall of light and heat conversion film (1), the bottom of light and heat conversion film (1) is provided with diffuse reflection foil piece (4), the length of filter paper (3) is greater than the length of light and heat conversion film (1), the outside cover of filter paper (3) has foam kickboard (5), be provided with shell (6) on foam kickboard (5), the top of shell (6) is provided with convex lens (7).
2. The apparatus for desalinating saltwater and recovering fresh water by high efficiency photothermal conversion according to claim 1, wherein the method for preparing the photothermal conversion film (1) comprises: soaking the 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 dropping 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 one side by using abrasive paper, washing the surface by using deionized water, and taking the polished side as the outer wall to obtain the photothermal conversion film (1).
3. The apparatus according to claim 2, 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.
4. The apparatus for desalination of salt water and recovery of fresh water by high efficiency photothermal conversion according to claim 2, wherein the stirring is continued for 5 min.
5. The apparatus for desalinating saltwater and recovering fresh water by high efficiency photothermal conversion according to claim 1, wherein the method for preparing the diffuse reflection foil (4) comprises: the metal foil was rolled back and forth 20 times on a 500-mesh stainless steel screen to obtain a diffuse reflection foil (4).
6. The apparatus for desalinating saltwater and recovering freshwater according to claim 1, wherein the diameter of the casing (6) is the same as that of the foam floating plate (5), and the bottom end of the casing (6) is bonded to the outer wall of the foam floating plate (5).
7. The apparatus for desalinating saltwater and recovering freshwater according to claim 1, wherein the casing (6) is provided with a water outlet (8) at an end thereof adjacent to the foam floating plate (5), and the water outlet (8) is provided with a valve.
8. The apparatus for desalinating saltwater and recovering freshwater according to claim 1, wherein a water-blocking film (2) is disposed between the photothermal conversion film (1) and the filter paper (3).
9. The apparatus for desalinating saltwater and recovering freshwater 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 |
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| Publication Number | Publication Date |
|---|---|
| CN114524478A true CN114524478A (en) | 2022-05-24 |
| CN114524478B CN114524478B (en) | 2024-04-30 |
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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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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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114524478B (en) | 2024-04-30 |
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