CN110885103A - Seawater desalination system and sea sand circulating desalination method - Google Patents
Seawater desalination system and sea sand circulating desalination method Download PDFInfo
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- CN110885103A CN110885103A CN201911022432.1A CN201911022432A CN110885103A CN 110885103 A CN110885103 A CN 110885103A CN 201911022432 A CN201911022432 A CN 201911022432A CN 110885103 A CN110885103 A CN 110885103A
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- seawater
- fresh water
- salinity
- sea sand
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- 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
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/06—Quartz; Sand
- C04B14/068—Specific natural sands, e.g. sea -, beach -, dune - or desert sand
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for 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
-
- 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
-
- 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 seawater desalination system and a seawater sand circular desalination method, wherein the seawater desalination system comprises a sunlight room, a seawater groove, a photothermal effect heating device and a fresh water groove which are positioned in the sunlight room, and the photothermal effect heating device and the fresh water groove are used for separating salt resources and fresh water resources in high-salinity seawater by adopting photothermal effect to form separated salt and fresh water, the separated fresh water can be used for desalting seawater sand, the high-salinity seawater formed after desalting the seawater sand can circularly enter a seawater desalination system to form fresh water, so that the circular generation and utilization of the fresh water resources are realized, a large amount of fresh water resources can be saved, the seawater sand desalted by adopting the fresh water resources can also be used for engineering construction, and the dilemma that the seawater sand cannot be directly applied and the fresh water resources are wasted at present is solved.
Description
Technical Field
The invention relates to the technical field of circulating seawater desalination, in particular to a seawater desalination system and a seawater sand circulating desalination method.
Background
Natural river sand, as one of indispensable and non-renewable resources of reinforced concrete materials, has gradually started to limit the progress of infrastructure construction, affecting economic development. Although there are a large amount of sea sand resources, they cannot be widely used because they contain a high concentration of corrosive salts. The prior sea sand desalination technology needs a large amount of fresh water resources, which inevitably causes dilemma of sea sand application and fresh water resource waste.
Disclosure of Invention
The invention aims to provide a seawater desalination system and a seawater sand circular desalination method, and aims to solve the problem that the existing seawater sand resource cannot be directly applied to engineering construction, and the seawater sand desalination by adopting a fresh water resource causes serious consumption of the fresh water resource.
In order to achieve the purpose, the invention provides the following scheme:
a seawater desalination system, comprising: the sunlight room is provided with a seawater tank, a photothermal effect heating device and a fresh water tank which are positioned in the sunlight room;
the top of the sunlight room is made of an inclined transparent glass top plate; the seawater tank and the fresh water tank are positioned on the ground in the sunlight room; the seawater tank is correspondingly arranged on the higher side of the inclined transparent glass top plate; the fresh water tank is correspondingly arranged on the lower side of the inclined transparent glass top plate; the seawater tank is used for containing seawater to be separated; the photothermal effect heating device is placed in the seawater tank and is used for separating salt and fresh water in the seawater; the fresh water tank is used for collecting the separated fresh water.
Optionally, the photothermal effect heating device is a photothermal effect thin film made of a tellurium-selenium heterojunction material.
Optionally, the photothermal effect film made of the tellurium-selenium heterojunction material is one or more layers; the multiple layers of the photothermal effect film have gaps between the multiple layers.
A sea sand circular desalination method is based on the sea water desalination system; the sea sand circulating desalination method comprises the following steps:
preparing an initial fresh water resource for washing the sea sand;
flushing sea sand by using the initial fresh water resource to form desalinated sea sand and high-salinity sea water;
the high salinity seawater circularly enters the seawater desalination system;
the seawater desalination system separates the salinity resource and the fresh water resource in the high-salinity seawater by adopting a photo-thermal effect to form separated salinity and fresh water;
and flushing the sea sand by using the separated fresh water to form desalinated sea sand and high-salinity seawater, and returning the desalinated sea sand to the sea water desalination system in a circulating manner.
Optionally, the desalinated sea sand is used for engineering construction.
Optionally, the seawater desalination system separates the salinity resource and the fresh water resource in the high salinity seawater by using a photo-thermal effect to form separated salinity and fresh water, and specifically includes:
sunlight penetrates through a transparent glass top plate at the top of a sunlight room in the seawater desalination system to irradiate a photothermal effect heating device in a seawater tank;
the photothermal effect heating device converts light energy into heat energy, and fresh water in the high-salinity seawater is evaporated by utilizing the heat energy to form separated salt and water vapor;
the separated water vapor rises to the inclined transparent glass top plate, and condensed water is formed due to low temperature;
the condensed water slides downwards to the upper part of the fresh water tank along the inclined transparent glass top plate under the action of gravity, and drops into the fresh water tank to be collected, so that separated fresh water is formed.
A sea sand circular desalination method is based on the sea water desalination system; the sea sand circulating desalination method comprises the following steps:
preparing high salinity seawater as an initial seawater resource;
the high salinity seawater circularly enters the seawater desalination system;
the seawater desalination system separates the salinity resource and the fresh water resource in the high-salinity seawater by adopting a photo-thermal effect to form separated salinity and fresh water;
and flushing the sea sand by using the separated fresh water to form desalinated sea sand and high-salinity seawater, and returning the desalinated sea sand to the sea water desalination system in a circulating manner.
Optionally, the desalinated sea sand is used for engineering construction.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the invention provides a seawater desalination system and a seawater sand circular desalination method, wherein the seawater desalination system comprises a sunlight room, a seawater groove, a photothermal effect heating device and a fresh water groove which are positioned in the sunlight room, and the photothermal effect heating device and the fresh water groove are used for separating salt resources and fresh water resources in high-salinity seawater by adopting photothermal effect to form separated salt and fresh water, the separated fresh water can be used for desalting seawater sand, the high-salinity seawater formed after desalting the seawater sand can circularly enter a seawater desalination system to form fresh water, so that the circular generation and utilization of the fresh water resources are realized, a large amount of fresh water resources can be saved, the seawater sand desalted by adopting the fresh water resources can also be used for engineering construction, and the dilemma of the application of the seawater sand and the waste of the fresh water resources at present is solved.
In addition, the seawater desalination system disclosed by the invention separates the salinity resource and the fresh water resource in the high-salinity seawater by using the photo-thermal effect, and solar energy is renewable green energy, can reduce the consumption of resources such as electric energy and the like, and is more energy-saving and environment-friendly. The separated salt resources can also be used as byproducts of a seawater desalination system in the chemical field, and the high-efficiency utilization of the sea sand resources is realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings provided by the present invention without any creative effort.
FIG. 1 is a schematic structural diagram of a seawater desalination system provided by the present invention;
FIG. 2 is a schematic diagram of a cycle process of the sea sand cyclic desalination method provided by the invention;
FIG. 3 is a schematic diagram of the cycle of the present invention when the initial water source is fresh water;
fig. 4 is a schematic diagram of the circulation process of the present invention when the initial water source is seawater.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a seawater desalination system and a seawater sand circular desalination method, and aims to solve the problem that the existing seawater sand resource cannot be directly applied to engineering construction, and the seawater sand desalination by adopting a fresh water resource causes serious consumption of the fresh water resource.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Fig. 1 is a schematic structural diagram of a seawater desalination system provided by the present invention. Referring to fig. 1, the seawater desalination system includes: the solar heating system comprises a sunlight room 1, and a seawater groove 2, a photothermal effect heating device 3 and a fresh water groove 4 which are positioned in the sunlight room 1.
The top of the sunlight room 1 is made of an inclined transparent glass roof 5. The seawater tank 2 and the fresh water tank 4 are positioned on the ground in the sunlight room 1. The seawater tank 2 is correspondingly arranged on the higher side of the inclined transparent glass top plate 5; the fresh water tank 4 is correspondingly arranged on the lower side of the inclined transparent glass top plate 5. The seawater tank 2 is used for containing seawater to be separated. The photothermal effect heating device 3 is placed in the seawater tank 2 and used for separating salt and fresh water in the seawater. The fresh water tank 4 is used for collecting the separated fresh water.
The photothermal effect heating device 3 is a photothermal effect film made of a tellurium-selenium heterojunction material. In order to increase the contact area between the film and seawater, the photothermal effect film made of the tellurium-selenium heterojunction material can be multi-layer; the multiple layers of the photothermal effect film are provided with gaps which can be contacted with seawater.
The working principle of the seawater desalination system is as follows:
sunlight penetrates through a transparent glass top plate 5 at the top of the sunlight room 1 to irradiate the photothermal effect heating device 3 in the seawater tank 2; the photothermal effect heating device 3 converts light energy into heat energy, and the heat energy is utilized to evaporate fresh water in seawater to form separated salt and water vapor. The separated water vapor rises to the inclined transparent glass top plate 5, and the water vapor is solidified to form condensed water due to the lower temperature of the transparent glass top plate 5; the condensed water slides down to the upper part of the fresh water tank 4 along the inclined transparent glass top plate 5 under the action of gravity, and drops into the fresh water tank 4 to be collected, so that separated fresh water is formed.
The seawater desalination system disclosed by the invention is used for separating salt resources and fresh water resources in high-salinity seawater by using the photo-thermal effect, and solar energy is renewable green energy, can reduce the consumption of resources such as electric energy and the like, and is more energy-saving and environment-friendly. The separated salt resources can also be used as byproducts of a seawater desalination system in the chemical field, and the high-efficiency utilization of the sea sand resources is realized.
Based on the seawater desalination system, the invention also provides a seawater sand circular desalination method. Fig. 2 is a schematic diagram of a circulation process of the sea sand circulation desalination method provided by the invention. Referring to fig. 2, the circulation process of the sea sand circulation desalination method comprises the following steps:
firstly, desalting the salvaged sea sand, and repeatedly washing to wash away most of corrosive salts on the surface of the sea sand so as to meet the requirement of building sand, wherein the desalted sea sand is used for engineering construction;
and then, the high-salinity seawater left after sea sand desalination enters a seawater desalination system based on a two-dimensional tellurium-selenium heterojunction, and salt resources and fresh water resources in the seawater can be separated by utilizing the photothermal effect of the tellurium-selenium heterojunction material. The salt resource can enter the chemical field as a byproduct of the system, and the obtained fresh water resource can be continuously used for sea sand desalination.
A certain amount of water is required to start the above cycle, and the initial water resource for starting the above cycle can be fresh water or seawater. Fig. 3 is a schematic view of a cycle process when the initial water resource provided by the present invention is fresh water, and fig. 4 is a schematic view of a cycle process when the initial water resource provided by the present invention is seawater.
Referring to fig. 3, if the initial water resource is fresh water, the fresh water is used to repeatedly flush the sea sand, the sea sand resource is desalinated to building sand available for engineering, and the initial fresh water is used to flush the sea sand and then becomes high salinity sea water. The high salinity seawater enters a seawater desalination system of a two-dimensional tellurium-selenium heterojunction, the seawater is desalinated through a photothermal effect, and the obtained fresh water continuously enters a sea sand washing system.
Referring to fig. 4, if the initial water is seawater, the high salinity seawater enters a seawater desalination system of the two-dimensional tellurium-selenium heterojunction, the seawater is desalinated through a photothermal effect, the obtained fresh water enters a seawater sand washing system, the desalinated seawater sand is building sand available for engineering, and the fresh water is used for washing the seawater sand to become high salinity seawater and continuously flows back to the seawater desalination system of the two-dimensional tellurium-selenium heterojunction for treatment.
Based on the two circulation processes, the invention provides two specific embodiments of the sea sand circulation desalination method:
example one
Referring to fig. 3, the sea sand circulation desalination method provided by the invention comprises the following steps:
preparing an initial fresh water resource for washing the sea sand;
flushing sea sand by using the initial fresh water resource to form desalinated sea sand and high-salinity sea water;
the high salinity seawater circularly enters the seawater desalination system;
the seawater desalination system separates the salinity resource and the fresh water resource in the high-salinity seawater by adopting a photo-thermal effect to form separated salinity and fresh water;
and flushing the sea sand by using the separated fresh water to form desalinated sea sand and high-salinity seawater, and returning the desalinated sea sand to the sea water desalination system in a circulating manner.
Wherein the desalinated sea sand is used for engineering construction.
The seawater desalination system adopts the optothermal effect to separate the salinity resource and the fresh water resource in the high salinity seawater, forms the salinity and the fresh water after the separation, specifically includes:
sunlight penetrates through a transparent glass top plate at the top of a sunlight room in the seawater desalination system to irradiate a photothermal effect heating device in a seawater tank;
the photothermal effect heating device converts light energy into heat energy, and fresh water in the high-salinity seawater is evaporated by utilizing the heat energy to form separated salt and water vapor;
the separated water vapor rises to the inclined transparent glass top plate, and condensed water is formed due to low temperature;
the condensed water slides downwards to the upper part of the fresh water tank along the inclined transparent glass top plate under the action of gravity, and drops into the fresh water tank to be collected, so that separated fresh water is formed.
Example two
Referring to fig. 4, the sea sand circulation desalination method provided by the invention comprises the following steps:
preparing high salinity seawater as an initial seawater resource;
the high salinity seawater circularly enters the seawater desalination system;
the seawater desalination system separates the salinity resource and the fresh water resource in the high-salinity seawater by adopting a photo-thermal effect to form separated salinity and fresh water;
and flushing the sea sand by using the separated fresh water to form desalinated sea sand and high-salinity seawater, and returning the desalinated sea sand to the sea water desalination system in a circulating manner.
Wherein the desalinated sea sand is used for engineering construction.
The seawater desalination system separates the salinity resource and the fresh water resource in the high-salinity seawater by adopting a photo-thermal effect to form separated salinity and fresh water, and the method specifically comprises the following steps:
sunlight penetrates through a transparent glass top plate at the top of a sunlight room in the seawater desalination system to irradiate a photothermal effect heating device in a seawater tank; the photothermal effect heating device converts light energy into heat energy, and fresh water in the high-salinity seawater is evaporated by utilizing the heat energy to form separated salt and water vapor; the separated water vapor rises to the inclined transparent glass top plate, and condensed water is formed due to low temperature; the condensed water slides downwards to the upper part of the fresh water tank along the inclined transparent glass top plate under the action of gravity, and drops into the fresh water tank to be collected, so that separated fresh water is formed.
Therefore, the seawater desalination system and the sea sand circular desalination method provided by the invention have the following advantages: 1) fresh water resources are saved; 2) the sea sand desalination can be realized, and the method is used for engineering construction; 3) solar energy is a green energy, and the energy consumption is reduced by utilizing the photo-thermal effect; 4) the salt for seawater is collected and used in the chemical industry, so that the utilization rate of the sea sand resource is improved; 5) and the circulating automatic management of the seawater desalination and utilization processes is realized.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention disclosed herein should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
The principles and embodiments of the present invention have been described herein using specific examples, which are presented solely to aid in the understanding of the apparatus and its core concepts; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (8)
1. A seawater desalination system, comprising: the sunlight room is provided with a seawater tank, a photothermal effect heating device and a fresh water tank which are positioned in the sunlight room;
the top of the sunlight room is made of an inclined transparent glass top plate; the seawater tank and the fresh water tank are positioned on the ground in the sunlight room; the seawater tank is correspondingly arranged on the higher side of the inclined transparent glass top plate; the fresh water tank is correspondingly arranged on the lower side of the inclined transparent glass top plate; the seawater tank is used for containing seawater to be separated; the photothermal effect heating device is placed in the seawater tank and is used for separating salt and fresh water in the seawater; the fresh water tank is used for collecting the separated fresh water.
2. The seawater desalination system of claim 1, wherein the photothermal effect heating device is a photothermal effect thin film made of tellurium-selenium heterojunction material.
3. The seawater desalination system of claim 2, wherein the photothermal effect thin film made of the tellurium-selenium heterojunction material is one or more layers; the multiple layers of the photothermal effect film have gaps between the multiple layers.
4. A sea sand circular desalination method is characterized in that the sea sand circular desalination method is based on the sea water desalination system of claim 1; the sea sand circulating desalination method comprises the following steps:
preparing an initial fresh water resource for washing the sea sand;
flushing sea sand by using the initial fresh water resource to form desalinated sea sand and high-salinity sea water;
the high salinity seawater circularly enters the seawater desalination system;
the seawater desalination system separates the salinity resource and the fresh water resource in the high-salinity seawater by adopting a photo-thermal effect to form separated salinity and fresh water;
and flushing the sea sand by using the separated fresh water to form desalinated sea sand and high-salinity seawater, and returning the desalinated sea sand to the sea water desalination system in a circulating manner.
5. The sea sand circulation desalination method of claim 4, wherein the desalinated sea sand is used for engineering construction.
6. The sea sand circulation desalination method of claim 4, wherein the sea water desalination system separates the salinity resource and the fresh water resource in the high salinity sea water by using a photo-thermal effect to form separated salinity and fresh water, and the method specifically comprises:
sunlight penetrates through a transparent glass top plate at the top of a sunlight room in the seawater desalination system to irradiate a photothermal effect heating device in a seawater tank;
the photothermal effect heating device converts light energy into heat energy, and fresh water in the high-salinity seawater is evaporated by utilizing the heat energy to form separated salt and water vapor;
the separated water vapor rises to the inclined transparent glass top plate, and condensed water is formed due to low temperature;
the condensed water slides downwards to the upper part of the fresh water tank along the inclined transparent glass top plate under the action of gravity, and drops into the fresh water tank to be collected, so that separated fresh water is formed.
7. A sea sand circular desalination method is characterized in that the sea sand circular desalination method is based on the sea water desalination system of claim 1; the sea sand circulating desalination method comprises the following steps:
preparing high salinity seawater as an initial seawater resource;
the high salinity seawater circularly enters the seawater desalination system;
the seawater desalination system separates the salinity resource and the fresh water resource in the high-salinity seawater by adopting a photo-thermal effect to form separated salinity and fresh water;
and flushing the sea sand by using the separated fresh water to form desalinated sea sand and high-salinity seawater, and returning the desalinated sea sand to the sea water desalination system in a circulating manner.
8. The sea sand circulation desalination method of claim 7, wherein the desalinated sea sand is used for engineering construction.
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2019
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