Day and night alternate photocatalytic water purification and condensation integrated device and working method thereof

Abstract

The invention provides a day and night alternate photocatalytic water purification and condensation integrated device and a working method thereof, and belongs to the technical field of water treatment. The problems that the material is easy to disperse and sink to the bottom after entering water and the catalyst is difficult to recycle in the existing photocatalytic device are solved. The water treatment tank comprises a water treatment tank shell, hydrogel, a plastic tray, a monitoring type liquid crystal elastomer, a deformable liquid crystal elastomer, a light-operated valve, a water storage tank and a photocatalysis mechanism, a water outlet hole is formed in the lower portion of the water treatment tank shell, the water storage tank is installed on the lower portion of the water treatment tank shell, the light-operated valve is arranged on the water outlet hole, and the light-operated valve is arranged on the water outlet hole. A water outlet hole is formed in the water treatment tank shell, a plastic tray is arranged above the water outlet hole, hydrogel is arranged in the center of the plastic tray, the monitoring type liquid crystal elastomers and the deformable liquid crystal elastomers are alternately embedded in the outer side of the plastic tray in a petal shape, and a photocatalysis mechanism is installed on the outer side of the water treatment tank shell. The device is mainly used for sewage treatment.

Description

Technical Field

[0001] The present invention belongs to the technical field of water treatment, and particularly relates to an integrated device for daylight and night alternating photocatalytic water purification and condensate water and its working method. Background Art

[0002] Since the industrial era, the rapid development of the human social economy has been accompanied by the disordered discharge of industrial and agricultural production wastewater and domestic sewage, resulting in the trend of complex and serious global water body pollution. This kind of pollution not only seriously damages the ecological environment, but also poses a direct threat to the safety of human drinking water sources and water resources. Approximately 80% of the sewage globally is directly discharged without effective treatment, and among them, water-soluble organic pollutants have become the primary problem in water pollution treatment.

[0003] Current mainstream water purification technologies include processes such as physical adsorption, sedimentation filtration, and chemical and biological oxidation. Among them, water purifiers represented by activated carbon adsorption, ultrafiltration membrane separation, and ion exchange resin filtration mainly conduct small-scale terminal purification on pre-treated municipal domestic water supply. Their design principles determine their insufficient treatment capacity for actual polluted water bodies.

[0004] As an emerging advanced oxidation process, photocatalytic water purification technology generates strongly oxidizing substances such as hydroxyl radicals under the excitation of light by semiconductor photocatalysts, and then degrades organic pollutants in water into harmless substances such as carbon dioxide and water, realizing the mineralization and decomposition of organic pollutants, thereby purifying water quality. Photocatalytic water purification has many advantages such as energy conservation and environmental protection, mild reaction conditions, broad-spectrum applicability, recyclability, and inorganic mineralization of pollutants, and is expected to be applied to the treatment of actual polluted water bodies.

[0005] However, in the actual water treatment process, the photocatalytic device faces the problem of catalyst dispersion, where the materials are prone to dispersion, sinking to the bottom, and difficult to recover after entering the water. At the same time, the existing water purification devices have a single function and are difficult to adapt to the technical development trend of multi-functional integration. Summary of the Invention

[0006] In view of this, the present invention aims to propose an integrated device for daylight and night alternating photocatalytic water purification and condensate water and its working method to solve the problems that in the actual water treatment process, the existing photocatalytic devices face the problem of catalyst dispersion where the materials are prone to dispersion, sinking to the bottom, and difficult to recover after entering the water, and at the same time, the existing water purification devices have a single function.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] An integrated device for day-night alternating photocatalytic water purification and condensation, comprising a water treatment tank housing, a hydrogel, a plastic tray, a monitoring type liquid crystal elastomer, a deformable liquid crystal elastomer, a light-controlled valve, a water storage tank and a photocatalytic mechanism. An outlet hole is installed below the water treatment tank housing. The water storage tank is installed below the water treatment tank housing. A light-controlled valve is arranged on the outlet hole. A plastic tray is arranged above the outlet hole. A hydrogel is arranged at the central part of the plastic tray. The monitoring type liquid crystal elastomer and the deformable liquid crystal elastomer are alternately embedded outside the plastic tray in a petal shape. A photocatalytic mechanism is installed outside the water treatment tank housing.

[0009] Furthermore, the photocatalytic mechanism includes an ultraviolet lamp, and the ultraviolet lamp is installed outside the water treatment tank housing.

[0010] Furthermore, a solar energy storage battery is installed outside the water treatment tank housing, and the solar energy storage battery is used to supply power to the ultraviolet lamp and the light-controlled valve.

[0011] Furthermore, a support device for supporting the plastic tray is installed at the central position of the bottom of the water treatment tank housing.

[0012] Furthermore, the photocatalyst in the hydrogel is a nano-TiO2 composite material.

[0013] Furthermore, the monitoring type liquid crystal elastomer is filled with a color-changing chemical substance, and the color-changing chemical substances include phenolphthalein, litmus, methyl orange, etc. according to different application scenarios.

[0014] Furthermore, the water treatment tank housing is made of a transparent material, including but not limited to acrylic board and quartz.

[0015] Furthermore, the deformable liquid crystal elastomer is a photosensitive liquid crystal elastomer.

[0016] Furthermore, the support device is made of aluminum alloy material.

[0017] A working method of an integrated device for day-night alternating photocatalytic water purification and condensation, which includes the following steps:

[0018] Step 1: During the day, the light-controlled valve controls the outlet hole to be closed, and the water treatment tank housing contains the sewage to be treated.

[0019] Step 2: The plastic tray floats on the sewage surface by its own buoyancy, and the hydrogel catalyzes and decomposes the pollutants in the water under the excitation of the sun.

[0020] Step 3: Evaluate the sewage treatment process through the color change of the monitoring type liquid crystal elastomer, and the solar energy storage battery absorbs solar energy for electricity storage.

[0021] Step 4: At night, the light-controlled valve controls the water outlet to open, and the purified sewage flows into the water storage tank. The plastic tray falls to the top of the supporting device, and the supporting device supports the plastic tray above the light-controlled valve, and the monitoring liquid crystal elastomer droops;

[0022] Step 5: The ultraviolet lamp emits ultraviolet light to irradiate the deformable liquid crystal elastomer to make it curl up and shrink, thereby making the surface hydrophilic and generating a local thermal effect;

[0023] Step 6: Water molecules are adsorbed on the surface of the deformable liquid crystal elastomer and continue to grow to form droplets, and then the condensed water flows into the water storage tank through the outlet hole.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The present invention uses a lightweight plastic tray, hydrogel, and liquid crystal elastomer to make a simple floating water purification and condensation integrated module to solve the dispersion problem of the photocatalytic material water purification process, while realizing the multifunctional integration of detection, water purification, and water condensation. The device is simple, easy to process and manufacture, and easy to use.

[0026] 2. The present invention has less energy-consuming equipment and low power, is energy-saving and environmentally friendly, and adopts an energy storage device and uses solar energy for energy supply, which can achieve energy self-sufficiency and is suitable for practical applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0028] Figure 1 This is a schematic structural diagram of a day-and-night photocatalytic water purification and water condensation integrated device according to the present invention;

[0029] Figure 2 It is a schematic diagram of the position of the water outlet hole of the present invention;

[0030] Figure 3 It is a schematic diagram of the positions of the monitoring liquid crystal elastomer and the deformable liquid crystal elastomer described in the present invention.

[0031] In the figure:

[0032] 1-water treatment box shell, 2-hydrogel, 3-plastic tray, 4-monitoring liquid crystal elastomer, 5-deformable liquid crystal elastomer, 6-support device, 7-solar energy storage battery, 8-ultraviolet lamp, 9-water outlet, 10-light-controlled valve, 11-water storage tank. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It should be noted that, without conflict, the embodiments and features in the embodiments of the present invention may be combined with each other. The described embodiments are only some of the embodiments of the present invention, rather than all of the embodiments.

[0034] Specific Embodiment 1: Refer to Figures 1-3 In this embodiment, an integrated device for photocatalytic water purification and condensation with day-night alternation includes a water treatment tank housing 1, a hydrogel 2, a plastic tray 3, a monitoring liquid crystal elastomer 4, a deformable liquid crystal elastomer 5, a light-controlled valve 10, a water storage tank 11, and a photocatalytic mechanism. An outlet hole 9 is installed below the water treatment tank housing 1. The water storage tank 11 is installed below the water treatment tank housing 1. A light-controlled valve 10 is arranged on the outlet hole 9. A plastic tray 3 is arranged above the outlet hole 9. A hydrogel 2 is arranged at the center of the plastic tray 3. The monitoring liquid crystal elastomer 4 and the deformable liquid crystal elastomer 5 are alternately embedded in a petal shape outside the plastic tray 3. A photocatalytic mechanism is installed outside the water treatment tank housing 1. The photocatalytic mechanism includes an ultraviolet lamp 8. The ultraviolet lamp 8 is installed outside the water treatment tank housing 1. A solar energy storage battery 7 is installed outside the water treatment tank housing 1. The solar energy storage battery 7 is used to supply power to the ultraviolet lamp 8 and the light-controlled valve 10. A support device 6 for supporting the plastic tray 3 is installed at the center of the bottom of the water treatment tank housing 1.

[0035] Under daylight illumination conditions, the light-controlled valve 10 controls the closing of the outlet hole 9. A certain amount of sewage to be treated is contained in the water treatment tank, and the water surface submerges the top of the support device 6. The hydrogel 2, the monitoring liquid crystal elastomer 4, and the deformable liquid crystal elastomer 5 float with the lightweight plastic tray 3. The monitoring liquid crystal elastomer 4 naturally unfolds and adheres to the water surface, and the pollutant concentration is displayed through color change. The sewage contacts the hydrogel 2 through the through holes at the bottom of the lightweight plastic tray 3. The nano-TiO2 particles in the hydrogel 2 catalyze and decompose the pollutants in the water. The solar energy storage battery 7 absorbs solar energy and supplies power to the ultraviolet lamp 8 and the light-controlled valve 10 at the same time. The ultraviolet lamp 8 supplements light for the hydrogel 2, improves the purification efficiency, and sterilizes the water body at the same time.

[0036] At night, the light-controlled valve 10 controls the opening of the outlet hole 9, and the purified sewage flows into the water storage tank 11. The support device 6 supports the lightweight plastic tray 3 directly above the light-controlled valve 10. The monitoring liquid crystal elastomer 4 naturally hangs down. The solar energy storage battery 7 supplies power to the ultraviolet lamp 8 to emit ultraviolet rays, which irradiate the deformable liquid crystal elastomer 5 to make it curl upward and gather, making the surface hydrophilic and generating a local thermal response. Water molecules are adsorbed on the surface of the deformable liquid crystal elastomer 5 and grow and aggregate continuously to form droplets, and the condensed water flows into the water storage tank 11 through the outlet hole 9.

[0037] A simple floating water purification and condensation integrated module is made of a plastic tray 3, a hydrogel 2, and a liquid crystal elastomer, which solves the dispersion problem in the water purification process of photocatalytic materials. At the same time, it realizes the integration of functions such as detection, water purification, and condensation. The device is simple, easy to process and manufacture, and convenient to use. The device has few energy-consuming equipment and low power, is energy-saving and environmentally friendly, and adopts an energy storage device to supply energy using solar energy, enabling energy self-sufficiency and being suitable for practical applications.

[0038] Specific Embodiment 2: Refer to Figures 1-2 In this embodiment, the bottom of the plastic tray 3 has through holes, and the sewage enters the tray through the through holes and contacts the hydrogel 2; the plastic tray 3 is preferably white, and the material includes but is not limited to polystyrene foam. A color-changing chemical substance is added to the monitoring liquid crystal elastomer 4, which can detect the concentration of pollutants in the water and present it through color change. According to different application scenarios, the color-changing chemical substances include phenolphthalein, litmus, methyl orange, etc. The deformable liquid crystal elastomer 5 is a photosensitive liquid crystal elastomer, which curls up under strong ultraviolet light irradiation to provide sites for water condensation.

[0039] Specific Embodiment 3: Refer to Figures 1-2 In this embodiment, a working method of a day-night alternating photocatalytic water purification and condensation integrated device is described, which includes the following steps:

[0040] Step 1: During the day, the light control valve 10 controls the closing of the water outlet hole 9, and the water treatment tank housing 1 contains the sewage to be treated;

[0041] Step 2: The plastic tray 3 floats on the sewage surface by its own buoyancy, and the hydrogel 2 catalyzes and decomposes the pollutants in the water under the excitation of the sun;

[0042] Step 3: Evaluate the sewage treatment process through the color change of the monitoring liquid crystal elastomer 4, and the solar energy storage battery 7 absorbs solar energy for electricity storage;

[0043] Step 4: At night, the light control valve 10 controls the opening of the water outlet hole 9, and the purified sewage flows into the water storage tank 11. The plastic tray 3 falls to the top of the support device 6, and the support device 6 supports the plastic tray 3 above the light control valve 10, and the monitoring liquid crystal elastomer 4 droops;

[0044] Step 5: The ultraviolet lamp 8 emits ultraviolet rays to irradiate the deformable liquid crystal elastomer 5 to make it curl up and close upward, making the surface hydrophilic and generating a local thermal effect;

[0045] Step 6: Water molecules are adsorbed on the surface of the deformable liquid crystal elastomer 5 and continuously grow to form droplets, and then the condensed water flows into the water storage tank 11 through the water outlet hole 9.

[0046] The specific embodiments of the present invention disclosed above are only used to help explain the present invention. The specific embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. According to the content of this specification, many modifications and changes can be made. These embodiments are selected and specifically described in this specification in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can well understand and utilize the present invention.

Claims

1. An integrated device for photocatalytic water purification and condensation with day-night alternation, characterized in that: The invention comprises a water treatment box shell (1), a hydrogel (2), a plastic tray (3), a monitoring liquid crystal elastomer (4), a deformable liquid crystal elastomer (5), a light-controlled valve (10), a water storage tank (11) and a photocatalytic mechanism. A water outlet (9) is installed below the water treatment box shell (1); the water storage tank (11) is installed below the water treatment box shell (1); the light-controlled valve (10) is arranged on the water outlet (9); a plastic tray (3) is arranged above the water outlet (9); a hydrogel (2) is arranged at the center of the plastic tray (3); the monitoring liquid crystal elastomer (4) and the deformable liquid crystal elastomer (5) are alternately embedded in the outer side of the plastic tray (3) in a petal shape; and a photocatalytic mechanism is installed on the outer side of the water treatment box shell (1).

2. The integrated device for photocatalytic water purification and condensate integration with day and night rotation according to claim 1, wherein: The photocatalytic mechanism comprises an ultraviolet lamp (8), and the ultraviolet lamp (8) is installed outside the water treatment tank housing (1).

3. According to the day-and-night rotating photocatalytic water purification and condensation integrated device described in claim 2, a solar energy storage battery (7) is installed on the outside of the water treatment box shell (1), and the solar energy storage battery (7) is used to power the ultraviolet lamp (8) and the light-controlled valve (10).

4. The integrated device for photocatalytic water purification and condensation integration with day-night alternation light according to claim 1, wherein: A supporting device (6) for supporting the plastic tray (3) is installed at the center of the bottom of the water treatment tank housing (1).

5. An integrated device for photocatalytic water purification and condensation integration with day and night alternation light, according to claim 1, characterized in that: The photocatalyst in the hydrogel (2) is a nano-TiO2 composite material.

6. The integrated device for photocatalytic water purification and condensate integration with day-night alternation light according to claim 1, characterized in that: The monitoring liquid crystal elastomer (4) is filled with color-changing chemicals.

7. An integrated device for photocatalytic water purification and condensate integration with day and night rotation, according to claim 1, characterized in that: The water treatment tank shell (1) is made of transparent material.

8. The integrated device for photocatalytic water purification and condensate integration with day-night alternation light according to claim 1, characterized in that: The deformable liquid crystal elastomer (5) is a photosensitive liquid crystal elastomer.

9. The integrated device for photocatalytic water purification and condensation integration with day-night alternation light according to claim 1, wherein: The supporting device (6) is made of aluminum alloy material.

10. A working method of an integrated device for day-night alternating photocatalytic water purification and condensation, as described in any one of claims 1-9, characterized in that: It includes the following steps: Step 1: During the day, the light-controlled valve (10) controls the water outlet (9) to be closed, and the water treatment tank housing (1) is filled with sewage to be treated; Step 2: The plastic tray (3) floats on the surface of the sewage water by its own buoyancy, and the hydrogel (2) catalytically decomposes the pollutants in the water under the stimulation of the sun; Step 3: The progress of sewage treatment is evaluated by monitoring the color change of the liquid crystal elastomer (4), and the solar energy storage battery (7) absorbs solar energy to store electricity; Step 4: At night, the light-controlled valve (10) controls the water outlet (9) to open, and the purified sewage flows into the water storage tank (11). The plastic tray (3) falls to the top of the supporting device (6). The supporting device (6) supports the plastic tray (3) above the light-controlled valve (10), and the monitoring liquid crystal elastic body (4) droops; Step 5: The ultraviolet lamp (8) emits ultraviolet light to irradiate the deformable liquid crystal elastomer (5) to make it curl up and shrink, thereby making the surface hydrophilic and generating a local thermal effect; Step 6: Water molecules are adsorbed on the surface of the deformable liquid crystal elastomer (5) and continue to grow to form droplets, and then condensed water flows into the water storage tank (11) through the water outlet (9).

Images