A seawater desalination system based on island greenhouse

Abstract

The present invention discloses a seawater desalination system based on an island greenhouse, and relates to the technical field of seawater desalination. The desalination system of the present invention comprises a first wet curtain, a second wet curtain and a heat collecting device; the first wet curtain and the second wet curtain are respectively located at the two side walls of the planting greenhouse; the first wet curtain and the heat collecting device are both connected to a first cold source through a pipeline; the heat collecting device is located at the top of the planting greenhouse; the heat collecting device is connected to the second wet curtain through a pipeline; an outer wall is arranged on one side of the second wet curtain; a chamber is formed between the outer wall and the second wet curtain, and an evaporative cooling collection device is arranged in the chamber; the evaporative cooling collection device is connected to a second cold source through a pipeline; the evaporative cooling collection device is connected to a water storage device for collecting condensed water. The present invention generates wet hot water vapor by arranging the first wet curtain and the second wet curtain, and collects the wet hot water vapor through the evaporative cooling collection device, thereby realizing the desalination of seawater, and solving the problem of high energy consumption of existing seawater desalination.

Description

Technical Field

[0001] The invention belongs to the technical field of seawater desalination, and in particular relates to a seawater desalination system based on an island greenhouse. Background Art

[0002] With the continuous exploration of marine areas by human beings, survival and settlement on islands have become of great significance. However, island life still faces many problems. For example, basic living needs such as food, energy, fresh water and electricity all need to be supplied from the outside world, and the domestic waste generated cannot be processed, causing pollution to the island environment.

[0003] The key to solving the problem of island life is how to achieve self-sufficiency in fresh water, food and energy. Existing seawater desalination mostly relies on various desalination equipment, which consumes a lot of energy and is not conducive to overall energy conservation and emission reduction. In addition, energy supply on islands is inconvenient. Therefore, the existing seawater desalination method is not suitable for the energy structure on islands.

[0004] Therefore, it is urgent to design a seawater desalination system suitable for islands to achieve energy conservation and meet the seawater desalination needs on the basis of energy conservation and emission reduction. Summary of the invention

[0005] The purpose of the present invention is to provide a seawater desalination system based on an island greenhouse, which generates humid hot water vapor by setting a first wet curtain and a second wet curtain, and collects the humid hot water vapor through an evaporative cooling collection device to achieve seawater desalination, thereby solving the problem of high energy consumption of existing seawater desalination.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0007] The present invention is a seawater desalination system based on an island greenhouse, comprising a planting greenhouse; the desalination system comprises a first wet curtain, a second wet curtain and a heat collecting device; the first wet curtain and the second wet curtain are respectively located at the two side walls of the planting greenhouse; the first wet curtain and the heat collecting device are both connected to a first cold source through a pipeline;

[0008] The heat collecting device is the top of the planting greenhouse; the heat collecting device is composed of a plurality of water pipes arranged side by side, and the surface of the water pipes is coated with a heat absorbing coating; the heat collecting device is connected to the second wet curtain through a pipeline, so that the first cold source enters the second wet curtain after being heated by the heat collecting device;

[0009] An outer wall is arranged on the side of the second wet curtain away from the first wet curtain; a chamber is formed between the outer wall and the second wet curtain, and an evaporative cooling collection device is arranged in the chamber; a fan is embedded in the outer wall; the fan is used to draw air in the planting greenhouse into the chamber and discharge it;

[0010] The evaporative cooling collection device is connected to a second cold source through a pipeline; the evaporative cooling collection device is connected to a water storage device for collecting condensed water.

[0011] Furthermore, the first cold source is shallow sea water.

[0012] Furthermore, the second cold source is deep sea water.

[0013] Furthermore, the planting greenhouse is provided with a rainwater collecting device, and the collected rainwater is stored in a water storage device.

[0014] Furthermore, the planting greenhouse includes an irrigation device; the irrigation device provides water through a water storage device.

[0015] The present invention has the following beneficial effects:

[0016] The present invention generates water vapor through the first wet curtain, heats the seawater with the heat collecting device, generates high-humidity hot water vapor with the second wet curtain, and condenses and collects the humid hot water vapor with the evaporative cooling collection device, thereby realizing the desalination and collection of seawater. The desalination process is simple and convenient, and is realized by utilizing the change of ambient temperature, which reduces the dependence on energy consumption and effectively improves the energy conservation and emission reduction.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0019] Figure 1 A schematic diagram of a seawater desalination system based on an island greenhouse according to the present invention;

[0020] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0021] 1-planting greenhouse, 2-first wet curtain, 3-second wet curtain, 4-heat collecting device, 5-evaporative cooling collecting device, 6-water storage device, 101-exterior wall, 102-fan, 103-rainwater collecting device, 104-irrigation device, 105-rainwater collecting device, 201-first cold source, 301-heat storage device, 501-second cold source. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0024] See also Figure 1 As shown, the present invention is a seawater desalination system based on an island greenhouse, comprising 1, a planting greenhouse 1; the desalination system comprises a first wet curtain 2, a second wet curtain 3 and a heat collecting device 4; the first wet curtain 2 and the second wet curtain 3 are respectively located on the two side walls of the planting greenhouse 1, and the first wet curtain 2 and the second wet curtain 3 can be installed on the side walls of the planting greenhouse 1, or embedded in the side walls of the planting greenhouse 1.

[0025] The first wet curtain 2 and the heat collecting device 4 are both connected to the first cold source 201 through a pipeline. The first cold source 201 is shallow sea water, that is, sea water with a depth of less than 500 meters, preferably less than 200 meters. The shallow sea water is injected into the first wet curtain 2 and the heat collecting device 4 through a water pump.

[0026] The heat collecting device 4 is located on the top of the planting greenhouse 1; the heat collecting device 4 is composed of a plurality of water pipes arranged side by side, and the surface of the water pipes is coated with a heat absorbing coating. After the shallow seawater enters the heat collecting device 4 through the pipes, it is heated by the water pipes. The heat collecting device 4 is connected to the second wet curtain 3 through a pipe, so that the shallow seawater of the first cold source 201 enters the second wet curtain 3 after being heated by the heat collecting device 4.

[0027] An outer wall 101 is provided on the side of the second wet curtain 3 away from the first wet curtain 2; a chamber is formed between the outer wall 101 and the second wet curtain 3, and an evaporative cooling collection device 5 is provided in the chamber; a fan 102 is embedded in the outer wall 101; the fan 102 is used to draw the air in the planting greenhouse 1 into the chamber and discharge it.

[0028] The evaporative cooling collection device 5 is connected to a second cold source 501 through a pipeline; the evaporative cooling collection device 5 is connected to a water storage device 6 for collecting condensed water. The second cold source 501 is deep sea water, that is, sea water with a depth of more than 500, so that the sea water has a lower temperature, and then the evaporative cooling collection device 5 obtains a lower surface temperature.

[0029] When the temperature of the planting greenhouse 1 is high or the humidity is low, the fan 102 is turned on so that the air outside the planting greenhouse 1 passes through the first wet curtain 2 and enters the interior of the planting greenhouse 1, thereby reducing the temperature of the incoming air and achieving the purpose of lowering the temperature inside the planting greenhouse 1. At the same time, the humidity of the incoming air is increased, which is beneficial to increasing the humidity level inside the planting greenhouse 1.

[0030] In addition, the high temperature and high humidity air generated by the planting greenhouse 1 passes through the second wet curtain 3, and the water temperature of the second wet curtain 3 is relatively high, so that the warm and humid air in the planting greenhouse 1 passes through the second wet curtain 3, and generates higher humid hot water vapor, which is drawn into the chamber by the fan 104, and the humid hot water vapor passes through the evaporative cooling collection device 5, so that the humid hot water vapor condenses on the surface of the evaporative cooling collection device 5 to generate condensed water, and the generated condensed water is fresh water, thereby realizing the desalination of seawater. The condensed water is stored in the water storage device 6 connected to the evaporative cooling collection device 5 through a pipeline.

[0031] As a preferred solution, the planting greenhouse 1 is provided with a rainwater collection device 103, and the collected rainwater is stored in the water storage device 6. Specifically, a gutter can be provided at the top edge of the slope of the planting greenhouse 1 to collect the rainwater through the gutter, and the collected rainwater is stored in the water storage device 6.

[0032] At the same time, the planting greenhouse 1 includes an irrigation device 104, which provides water through the water storage device 6, thereby providing water for vegetable planting and drinking for humans and livestock through seawater desalination and rainwater collection. A heating device and a heat storage device can also be set in the planting greenhouse 1. The heat storage medium stores the heat generated by the heat collection device 4, and part of the heat generated by the heat collection device 4 can also be used for heating the island residents.

[0033] When the temperature inside the planting greenhouse 1 is low, heat can be transported to the heating device through the collector 4 or the heat storage device, and the air inside the planting greenhouse 1 can be heated by the heating device, so that the planting greenhouse 1 maintains a suitable temperature, which is conducive to the growth of plants.

[0034] As another preferred solution, the overall desalination system may also include a wind and solar power generation system, which is connected to a power storage system for storing electricity. The wind and solar power generation system includes a photovoltaic power generation system and a wind power generation system, and the generated electricity is stored through the power storage system. The power of the power storage system can provide electricity for greenhouse lighting or other electricity consumption. At the same time, the power storage system can also provide electricity for the heat storage device, and heat the medium in the heat storage device by electric heating, thereby providing a heat source for the planting greenhouse 1 or residents.

[0035] In addition, the power of the wind and solar power generation system or the power storage system also provides power for the reverse osmosis desalination device. The reverse osmosis desalination device desalinates seawater, and the reverse osmosis desalination is combined with condensation desalination to ensure that sufficient desalinated seawater water is obtained, and the desalinated water is stored in the water storage device 6.

[0036] The planting system of the planting greenhouse 1 also includes an organic waste fermentation treatment system. The organic waste fermentation treatment system treats various organic wastes such as organic household garbage, toilet feces, vegetable production and processing waste, livestock and poultry feces, etc. generated in the process of human life, greenhouse and field planting, livestock and poultry breeding, etc. through biomass fermentation to make them harmless, resource-based, and utilize them, and transform such wastes into efficient organic fertilizers that are easy for crops to absorb, environmentally friendly and renewable clean energy, and at the same time kill the pathogenic insect eggs and bacteria therein, thus realizing the ecological cycle of human life and agricultural production in a small range.

[0037] The organic waste fermentation treatment system ferments the organic waste and obtains combustible gas, which can be used directly by island residents or as boiler fuel, and the fermentation residue can be used for planting plants in greenhouse 1 to provide nutrients for crops.

[0038] By recycling the water vapor inside the planting greenhouse 1, as well as desalinating seawater and collecting rainwater, the entire island greenhouse ecosystem can obtain sufficient fresh water resources. At the same time, in the island greenhouse ecosystem, the temperature, relative humidity, light intensity, CO2 concentration and other physical parameters in the environment can be detected through temperature sensors, humidity sensors, light sensors, CO2 sensors and other equipment, and the instruments can be used to display them in real time or participate in the automatic control as parameters of automatic control to ensure that crops have a good and suitable growth environment. The realization of remote control enables technicians to monitor and control the environment of multiple greenhouses in the office. The use of wireless networks to measure and obtain the best conditions for crop growth can provide a scientific basis for precise control of greenhouses, so as to achieve the purpose of increasing production, improving quality, adjusting growth cycles, and improving economic benefits.

[0039] The island greenhouse ecosystem can solve the current situation that island residents rely on external supplies for food, fresh water, energy and electricity. The system operates independently and does not consume the island's living resources. It uses seawater, carbon dioxide and solar energy to provide residents with fresh water, organic vegetables and electricity. At the same time, it processes the organic waste generated by life and converts it into biogas and organic fertilizer for kitchen and plant fertilization. The comprehensive utilization of limited resources to meet the self-sufficiency of island life is a low-carbon, environmentally friendly and sustainable development system that effectively improves the overall utilization rate of energy and the recycling of ecological energy.

[0040] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0041] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A seawater desalination system based on an island greenhouse, comprising a planting greenhouse (1); characterized in that: The desalination system comprises a first wet curtain (2), a second wet curtain (3) and a heat collecting device (4); the first wet curtain (2) and the second wet curtain (3) are respectively located on two side walls of the planting greenhouse (1); The first wet curtain (2) and the heat collecting device (4) are both connected to a first cold source (201) via a pipeline; The heat collecting device (4) is located on the top of the planting greenhouse (1); the heat collecting device (4) is composed of a plurality of water pipes arranged side by side, and the surface of the water pipes is coated with a heat absorbing coating; The heat collecting device (4) is connected to the second wet curtain (3) via a pipeline, so that the first cold source (201) enters the second wet curtain (3) after being heated by the heat collecting device (4); An outer wall (101) is provided on a side of the second wet curtain (3) away from the first wet curtain (2); a chamber is formed between the outer wall (101) and the second wet curtain (3), and an evaporative cooling collection device (5) is provided in the chamber; a fan (102) is embedded in the outer wall (101); the fan (102) is used to draw air in the planting greenhouse (1) into the chamber and discharge it; The evaporative cooling collection device (5) is connected to a second cold source (501) via a pipeline; the evaporative cooling collection device (5) is connected to a water storage device (6) for collecting condensed water.

2. A seawater desalination system based on an island greenhouse according to claim 1, characterized in that: The first cold source (201) is shallow sea water.

3. The seawater desalination system based on an island greenhouse according to claim 1, characterized in that: The second cold source (501) is deep sea water.

4. A seawater desalination system based on an island greenhouse according to claim 1, 2 or 3, characterized in that: The planting greenhouse (1) is provided with a rainwater collection device (103), and the collected rainwater is stored through a water storage device (6).

5. A seawater desalination system based on an island greenhouse according to claim 1, 2 or 3, characterized in that: The planting greenhouse (1) comprises an irrigation device (104); the irrigation device (104) provides water through a water storage device (6).

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