Photocatalytic pollution purification floating bed based on photosensitive power supply and running all day long

Abstract

The application discloses a photocatalytic pollution-removing floating bed based on photosensitive power supply and running all day, wherein a photosensitive power supply module supplies power to an electric telescopic rod when the light intensity on the water surface monitored reaches a preset threshold value; the electric telescopic rod reciprocally extends and retracts to drive artificial water grass to periodically immerse in or float out of the water surface; in the immersion process, the surface of the artificial water grass adsorbs pollutants in the water area; in the floating process, the photocatalytic composite film can photocatalyze and remove the adsorbed pollutants under natural light; the photosensitive power supply module supplies power to a light-emitting component when the light intensity on the water surface monitored is lower than the preset threshold value; the electric telescopic rod keeps in the extended or compressed state to drive the artificial water grass to immerse in the water surface; the light-emitting component irradiates the photocatalytic composite film at a short distance; the photocatalytic composite film can photocatalyze and remove the pollutants in the water under no light or weak light, and effective photocatalytic pollution removal is realized all day and all the time.

Description

Technical Field

[0001] This invention relates to a photocatalytic purification floating bed based on photosensitive power supply, belonging to the field of water environment protection technology. Background Technology

[0002] With the continuous progress of human society and the rapid development of modern industry, various artificially synthesized and complex chemical products have appeared in all aspects of human life, leading to increasingly serious water pollution problems. Currently, persistent pollutants such as pesticides, dyes, phenols, and antibiotics are widely present in rivers and lakes. These pollutants are characterized by their complex composition, high toxicity, and strong bioaccumulation, and over time, they will inevitably pose a serious threat to the aquatic environment, aquatic ecosystems, and even the health of residents. Therefore, how to safely, quickly, and efficiently remove these water pollutants has become one of the key research areas in the field of river and lake water pollution control.

[0003] Artificial floating bed technology, with its simple construction, low cost, strong in-situ remediation capabilities, and good landscape effects, has become a preferred solution in the field of aquatic ecological restoration. However, its application still faces many challenges, including long pollutant degradation cycles, susceptibility to fluctuations in external conditions such as climate and water quality, cumbersome treatment of plant debris on the floating bed, and high maintenance costs. Plants, the core component of the floating bed, have high requirements for their growth environment and struggle to maintain survival and purification efficiency in high-pollution and highly toxic environments. Furthermore, their purification capabilities are largely limited to nitrogen, phosphorus, and some specific pollutants, with limited effectiveness in removing recalcitrant organic pollutants in complex water bodies. Therefore, improving the environmental adaptability of floating bed technology and enhancing its water purification efficiency have become urgent technical challenges to overcome.

[0004] Photocatalysis technology, with its advantages of being green, environmentally friendly, and low-energy consumption, has shown great application potential in energy, materials, and environmental governance. Under mild conditions, this technology converts light energy into chemical energy through a photocatalyst, promoting the mineralization of pollutants into harmless substances such as carbon dioxide, water, and inorganic salts, achieving non-toxic or low-toxicity treatment, and is particularly suitable for treating recalcitrant organic pollutants. However, this technology still faces many challenges in its practical application in treating pollutants in natural water bodies. First, the technology requires relatively high light conditions; its purification efficiency will significantly decrease under low light intensity conditions such as at night. Furthermore, when treating water bodies with high pollution concentrations and low transparency, light can hardly penetrate, limiting the underwater purification capabilities of the photocatalyst.

[0005] Therefore, the key to promoting the effective application of this technology in China's complex aquatic environment lies in how to address the above-mentioned problems by integrating the advantages of the two technologies and making up for their respective shortcomings, and designing a photocatalytic floating bed system that is green, efficient and widely applicable, so as to achieve complementary advantages and synergistic effects between the technologies. This is of great significance for the effective improvement of the water quality of rivers and lakes in my country, as well as the promotion and application of floating bed and photocatalytic technologies. Summary of the Invention

[0006] The technical problem this invention aims to solve is to overcome the shortcomings of existing technologies and provide a photocatalytic floating bed for water purification based on photosensitive power supply. This addresses the problems of traditional plant floating bed devices, such as the plants being highly susceptible to environmental influences, high maintenance costs, and easy decay leading to secondary pollution. It also solves the problem of low pollutant removal efficiency of photocatalytic materials in water bodies due to short natural light duration and low underwater light intensity. This invention combines photocatalysis technology with artificial floating bed technology, effectively improving the water purification effect of artificial floating beds.

[0007] A photocatalytic purification floating bed based on photosensitive power supply that operates 24 / 7, the floating bed being suspended on the water surface, the floating bed comprising:

[0008] The photosensitive power supply module monitors the light intensity on the water surface in real time;

[0009] Several electrically operated telescopic rods are electrically connected to the photosensitive power supply module;

[0010] Several artificial aquatic plants are connected to the electric telescopic rod, covered with a photocatalytic composite film, and light-emitting components are installed inside that can be seen through the film;

[0011] The photosensitive power supply module supplies power to the electric telescopic rod when the light intensity on the water surface reaches a preset threshold. When the power is supplied, the electric telescopic rod reciprocates, causing the artificial aquatic plants to periodically immerse themselves in or float out of the water. During the immersion process, the surface of the artificial aquatic plants adsorbs pollutants in the water. During the floating process, the photocatalytic composite membrane performs photocatalytic purification of the adsorbed pollutants.

[0012] Furthermore, a light-emitting component is installed inside the artificial aquatic plant with transparent visibility. The light-emitting component is electrically connected to the photosensitive power supply module. When the photosensitive power supply module detects that the light intensity on the water surface has not reached a preset threshold, it supplies power to the light-emitting component. When the power supply is not applied, the electric telescopic rod remains in an extended or retracted state, thereby driving the artificial aquatic plant to be immersed in the water surface. At this time, the light-emitting component provides close-range light to the photocatalytic composite membrane, enabling the photocatalytic composite membrane to remove pollutants in the water through photocatalysis.

[0013] Furthermore,

[0014] The photosensitive power supply module includes:

[0015] Battery components;

[0016] The controller is electrically connected to the battery assembly;

[0017] A photosensitive sensor is connected to the controller via a signal connection.

[0018] A pulse timer, connected to the controller signal, is used to control the extension and retraction of the electric telescopic rod.

[0019] Furthermore,

[0020] The battery assembly includes:

[0021] Solar panels,

[0022] A voltage conversion module is electrically connected to the solar panel;

[0023] The battery is electrically connected to the voltage conversion module and the controller.

[0024] Furthermore,

[0025] When the electric telescopic rod extends, it causes the artificial aquatic plants to be submerged in the water, and when it retracts, it causes the artificial aquatic plants to float out of the water.

[0026] or,

[0027] When the electric telescopic rod extends, it causes the artificial aquatic plants to float to the surface of the water; when it retracts, it causes the artificial aquatic plants to sink back into the water.

[0028] Furthermore,

[0029] The floating bed also includes:

[0030] A ring-shaped float, with the photosensitive power supply module mounted on the float and floating on the water surface, one end of which is fixedly connected to one end of the electric telescopic rod, and the solar panel mounted on the ring surface of the float;

[0031] A support surface composed of several interlaced supports is located at the annular opening of the floating plate, supports the artificial aquatic plants, and is fixedly connected to the other end of the electric telescopic rod;

[0032] The support surface is not higher than the upper surface of the annular floating plate.

[0033] Furthermore,

[0034] The artificial aquatic plants include:

[0035] Base;

[0036] Several leaves forming a grass shape are mounted on the base;

[0037] The base and the blade are transparently fitted with light-emitting components;

[0038] The light-emitting component includes:

[0039] An LED light source is located inside the base and is electrically connected to the photosensitive power supply module;

[0040] A light-guiding optical fiber is disposed inside the blade and coupled to the LED light source;

[0041] The LED light source and the optical fiber are disposed inside the coated sleeve and covered with the photocatalytic composite film.

[0042] Furthermore,

[0043] The coated sleeve includes a sleeve and the photocatalytic composite film. The sleeve is cylindrical, conical, or prismatic. The sleeve is made of a flexible transparent polymer tube. The photocatalytic composite film is loaded on the surface of the sleeve. The LED light source and the light guiding fiber are disposed inside the sleeve. The photocatalytic composite film is composed of a resin layer and a nano-titanium dioxide layer from the inside to the outside.

[0044] Furthermore,

[0045] The base has several fixing slots, and the LED light source is fixed inside the fixing slots.

[0046] Furthermore,

[0047] The diameter of the fixing groove on the base is the same as the outer diameter of the sleeve, and the lower end of the sleeve is fixed in the fixing groove.

[0048] The beneficial effects achieved by this invention are as follows:

[0049] 1. This invention uses solar cells as a power source. By periodically extending and retracting an electric telescopic pole during the day or under high light intensity conditions, it can achieve the alternation of two processes: photodegradation of artificial aquatic plants on the water surface and adsorption below the water surface. This can effectively solve the problem of low pollutant removal efficiency of photocatalytic materials in water bodies caused by low underwater light intensity.

[0050] 2. At night or under low light conditions, the electric telescopic rod can remain extended, and the artificial aquatic plants will be immersed in the water. The LED light source will directly illuminate the artificial aquatic plants, realizing the adsorption and photodegradation of pollutants at all times under night or low light conditions, which significantly improves the water purification efficiency of the floating bed.

[0051] 3. The optical fiber is fixed inside the transparent leaves of the artificial aquatic plant, enabling close-range direct irradiation of the photocatalytic material on the leaf surface, avoiding the absorption of light by the water and effectively improving the utilization rate of light; at the same time, combined with the photosensitive device, the light source can be precisely turned on only at night or during low light periods, effectively reducing the energy consumption of the equipment.

[0052] 4. The swaying of the flexible leaves of artificial aquatic plants in flowing water promotes the convection and diffusion of pollutants on the leaf surface and in the water, effectively solving the problem of low pollutant removal efficiency caused by low mass transfer efficiency. At the same time, the water disturbance caused by the swaying of the leaves helps to increase the oxygen content at the photocatalytic liquid-solid reaction interface, thereby improving the photocatalytic reaction rate.

[0053] 5. The leaves of artificial aquatic plants have a thin, strip-shaped structure and a large specific surface area, which can increase the loading capacity of photocatalytic materials and the effective photocatalytic reaction area, thereby improving the pollutant removal efficiency of artificial aquatic plants.

[0054] 6. This invention has an attractive appearance and can emit light at night, providing a good landscape effect. It can be applied to water purification work in various water bodies in cities and rural areas.

[0055] 7. The present invention has a simple structure, is easy to maintain, and has low manufacturing and maintenance costs, making it suitable for mass production. Attached Figure Description

[0056] Figure 1 This is a top view of the present invention;

[0057] Figure 2 This is a sectional view along line AA when the electric telescopic rod of the present invention is compressed;

[0058] Figure 3 This is a cross-sectional view along line AA when the electric telescopic rod of the present invention is extended;

[0059] Figure 4 This is a schematic diagram of the artificial aquatic plants of the present invention;

[0060] Figure 5 These are a top view and a partial enlarged view of the artificial aquatic plant base of the present invention;

[0061] Figure 6 This is a partial cross-sectional view of the artificial aquatic plant leaf of the present invention;

[0062] Figure 7 This is a cross-sectional view of the blade along the AA direction;

[0063] The markings in the attached diagram are as follows: 1 is the float; 2 is the support surface; 3 is the solar panel; 4 is the artificial aquatic plant; 5 is the photosensitive power supply module; 6 is the electric telescopic rod; 7 is the water surface; 8 is the blade; 9 is the base; 10 is the fixing groove; 11 is the LED light source; 12 is the optical fiber; 13 is the sleeve; and 14 is the photocatalytic composite membrane. Detailed Implementation

[0064] The following embodiments are only used to illustrate the technical solutions of the present invention more clearly, and should not be used to limit the scope of protection of the present invention.

[0065] Reference Figures 1-3 A photocatalytic purification floating bed based on photosensitive power supply that operates 24 / 7, the floating bed being suspended on the water surface, the floating bed comprising:

[0066] Photosensitive power supply module 5 is used to monitor the light intensity on the water surface in real time;

[0067] Several electrically operated telescopic rods 6 are electrically connected to the photosensitive power supply module 5;

[0068] Several artificial aquatic plants 4 are connected to the electric telescopic rod 6 and covered with a photocatalytic composite film 14, with light-emitting components installed inside that can be seen through.

[0069] When the light intensity on the water surface reaches a preset threshold, the photosensitive power supply module 5 supplies power to the electric telescopic rod 6. When the power is supplied, the electric telescopic rod 6 reciprocates to drive the artificial aquatic plants to periodically immerse in or float out of the water surface.

[0070] It is worth noting that during the process of immersion in the water surface 7, the surface of the artificial aquatic plant 4 adsorbs pollutants in the water area, and during the process of floating out of the water surface 7, the photocatalytic composite membrane 14 performs photocatalytic purification of the adsorbed pollutants.

[0071] Furthermore, a light-emitting component is installed inside the artificial aquatic plant 4 with transparent visibility. The light-emitting component is electrically connected to the photosensitive power supply module 5. When the photosensitive power supply module 5 detects that the light intensity on the water surface 7 has not reached a preset threshold, it supplies power to the light-emitting component. When the power supply is not provided, the electric telescopic rod 6 remains in an extended or retracted state, thereby driving the artificial aquatic plant 4 to be immersed in the water surface. At this time, the light-emitting component provides close-range light to the photocatalytic composite membrane 14, enabling the photocatalytic composite membrane 14 to remove pollutants in the water through photocatalysis.

[0072] The artificial aquatic plants 4 have been further improved in their cleaning effect, enabling the floating bed to operate all day and clean up dirt throughout the entire process.

[0073] Furthermore, in one example,

[0074] When the electric telescopic rod 6 extends, it causes the artificial aquatic plant 4 to be submerged in the water, and when it retracts, it causes the artificial aquatic plant 4 to float out of the water.

[0075] or,

[0076] When the electric telescopic rod 6 extends, it causes the artificial aquatic plant 4 to float to the surface of the water; when it retracts, it causes the artificial aquatic plant 4 to sink into the water.

[0077] Of course, other mechanical structures that can drive the artificial aquatic plant 4 into the water can also be used, such as a crank structure, as long as it can drive the artificial aquatic plant 4 to be periodically immersed in the water or immersed in the water for a long time when the light is insufficient, under the drive of the photosensitive power supply module 5.

[0078] Furthermore, in one example, the photosensitive power supply module 5 includes:

[0079] Battery assembly, used for power supply;

[0080] The controller is electrically connected to the battery assembly;

[0081] A photosensitive sensor is connected to the controller via a signal connection.

[0082] A pulse timer, connected to the controller signal, is used to control the extension and retraction of the electric telescopic rod.

[0083] Furthermore, in one example,

[0084] The battery assembly includes:

[0085] Solar panel 3 includes several solar cells;

[0086] A voltage conversion module is electrically connected to the solar panel;

[0087] The battery is electrically connected to the voltage conversion module and the controller.

[0088] Furthermore,

[0089] The floating bed also includes:

[0090] The annular float 1 has a photosensitive power supply module 5 mounted on it, which floats on the water surface. One end of the module is fixedly connected to one end of the electric telescopic rod 6. The solar panel 3 is mounted on the annular surface of the float 1.

[0091] A support surface 2, composed of several intersecting supports, is located at the annular opening of the float 1, supports the artificial aquatic plants 4, and is fixedly connected to the other end of the electric telescopic rod 6;

[0092] The support surface 2 is not higher than the upper surface of the annular floating plate 1.

[0093] Furthermore, in one example, refer to Figure 4 ,

[0094] The artificial aquatic plant 4 includes:

[0095] Base 9;

[0096] Several leaves 8 forming a grass shape are mounted on the base;

[0097] The base 8 and the blade 9 are transparently equipped with light-emitting components;

[0098] The light-emitting component includes:

[0099] LED light source 11 is disposed in the base 8 and electrically connected to the photosensitive power supply module;

[0100] A light-guiding optical fiber is disposed inside the blade and coupled to the LED light source;

[0101] The LED light source and the optical fiber are disposed inside the coated sleeve and covered with the photocatalytic composite film.

[0102] Among them, blade 8 has a flexible, thin strip structure with a large specific surface area, which can increase the loading capacity of photocatalytic materials and the effective photocatalytic reaction area of ​​artificial aquatic plants 4, thereby improving the pollutant removal efficiency of artificial aquatic plants. In addition, the swaying of the blades in flowing water can promote the convection and diffusion of pollutants on the blade surface and in the water, effectively solving the problem of low pollutant removal efficiency caused by low mass transfer efficiency. At the same time, the water disturbance caused by the swaying of the blades helps to increase the oxygen content at the photocatalytic liquid-solid reaction interface, thereby increasing the photocatalytic reaction rate.

[0103] Furthermore, in one example, refer to Figures 5-7 ,

[0104] The coated sleeve includes a sleeve 13 and the photocatalytic composite film 14. The sleeve 13 is cylindrical, conical, or prismatic. The sleeve 13 is made of a flexible transparent polymer tube. The photocatalytic composite film 14 is loaded on the surface of the sleeve 13. The LED light source 11 and the light guiding fiber 12 are disposed inside the sleeve 13. The photocatalytic composite film 14 is composed of a resin layer and a nano titanium dioxide layer from the inside to the outside.

[0105] Furthermore, in one example,

[0106] The base 8 has several fixing slots 10, and the LED light source 11 is fixed inside the fixing slots 10. The diameter of the fixing slots 10 on the base 8 is the same as the outer diameter of the sleeve 13, and the lower end of the sleeve 13 is fixed in the fixing slots 10.

[0107] Based on the above embodiments, the working principle of the present invention is as follows:

[0108] The floating bed floats on the water surface. When the photosensitive sensor detects daytime or light intensity exceeding a preset threshold, a pulse timer is activated. At this time, the artificial aquatic plant 4 does not emit light, the electric telescopic rod 6 extends, and the artificial aquatic plant 4 is submerged in the water, allowing pollutants in the water to be fully adsorbed onto its surface. After a period of time, once adsorption is complete, the electric telescopic rod 6 retracts, causing the artificial aquatic plant 4 to emerge from the water surface 7. At this time, the TiO2 particles on the surface of the photocatalytic composite film 14 can undergo a photocatalytic reaction under natural light, photocatalytically removing pollutants adsorbed on the surface of the leaves 8. After a period of time, the electric telescopic rod 6 extends again, and the artificial aquatic plant 4 is submerged in the water, entering a cycle. Under the action of the electric telescopic rod 6, the artificial aquatic plant 4 continuously repeats the submersion and exposure process, thereby achieving the synergistic effect of adsorption and photodegradation. When the photosensitive sensor detects that it is nighttime or the light intensity is below a preset threshold, the electric telescopic rod 6 remains extended, driving the artificial aquatic plants 4 to remain submerged. At this time, the photosensitive power supply module 5 supplies power to the LED light source 11, and through the light guide fiber 12, the photocatalytic composite film 14 on the surface of the leaf 8 is directly illuminated at close range, thereby achieving the purpose of photocatalytic purification under low light intensity conditions such as nighttime.

[0109] This device, powered by solar panels and combined with an electric telescopic pole 6 and a photosensitive power supply module 5, can achieve 24-hour uninterrupted purification of pollutants in water. Maintenance should be performed every 3-6 months to clean the surface of the device and replace the leaves 8 of the artificial aquatic plants 4 to ensure efficient operation of the entire system.

[0110] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A photocatalytic purification floating bed based on photosensitive power supply that operates 24 / 7, characterized in that, The floating bed is suspended on the water surface, and the floating bed includes: The photosensitive power supply module monitors the light intensity on the water surface in real time; Several electrically operated telescopic rods are electrically connected to the photosensitive power supply module; Several artificial aquatic plants are connected to the electric telescopic rod, covered with a photocatalytic composite film, and light-emitting components are installed inside that can be seen through the film; When the light intensity on the water surface reaches a preset threshold, the photosensitive power supply module supplies power to the electric telescopic rod. When the power is supplied, the electric telescopic rod reciprocates to drive the artificial aquatic plants to periodically immerse themselves in the water or float to the surface. During the immersion process, the surface of the artificial aquatic plants adsorbs pollutants in the water. During the floating process, the photocatalytic composite membrane performs photocatalytic purification of the adsorbed pollutants. The artificial aquatic plant is equipped with a light-emitting component that is transparently installed inside. The light-emitting component is electrically connected to the photosensitive power supply module. When the photosensitive power supply module detects that the light intensity on the water surface has not reached a preset threshold, it supplies power to the light-emitting component. When the power supply is not provided, the electric telescopic rod remains in an extended or retracted state, thereby driving the artificial aquatic plant to be immersed in the water surface. At this time, the light-emitting component provides close-range light to the photocatalytic composite membrane, enabling the photocatalytic composite membrane to remove pollutants in the water through photocatalysis. The artificial aquatic plants include: Base; Several leaves forming a grass shape are mounted on the base; The base and the blade are transparently fitted with light-emitting components; The light-emitting component includes: An LED light source is located inside the base and is electrically connected to the photosensitive power supply module; A light-guiding optical fiber is disposed inside the blade and coupled to the LED light source; A coated sleeve, wherein the LED light source and the light guiding fiber are disposed inside the coated sleeve and covered with the photocatalytic composite film; The coated sleeve includes a sleeve and the photocatalytic composite film. The sleeve is cylindrical, conical, or prismatic. The sleeve is made of a flexible transparent polymer tube. The photocatalytic composite film is loaded on the surface of the sleeve. The LED light source and the light guiding fiber are disposed inside the sleeve. The photocatalytic composite film is composed of a resin layer and a nano-titanium dioxide layer from the inside to the outside.

2. The photocatalytic purification floating bed based on photosensitive power supply and operating 24 / 7 as described in claim 1, characterized in that, The photosensitive power supply module includes: Battery components; The controller is electrically connected to the battery assembly; A photosensitive sensor is connected to the controller via a signal connection. A pulse timer, connected to the controller signal, is used to control the extension and retraction of the electric telescopic rod.

3. The photocatalytic purification floating bed based on photosensitive power supply and operating 24 / 7 as described in claim 2, characterized in that, The battery assembly includes: Solar panels, A voltage conversion module is electrically connected to the solar panel; The battery is electrically connected to the voltage conversion module and the controller.

4. The photocatalytic purification floating bed based on photosensitive power supply and operating 24 / 7 as described in claim 1, characterized in that, When the electric telescopic rod extends, it causes the artificial aquatic plants to be submerged in the water, and when it retracts, it causes the artificial aquatic plants to float out of the water. or, When the electric telescopic rod extends, it causes the artificial aquatic plants to float to the surface of the water; when it retracts, it causes the artificial aquatic plants to sink back into the water.

5. The photocatalytic purification floating bed based on photosensitive power supply and operating 24 / 7 as described in claim 3, characterized in that, The floating bed also includes: A ring-shaped float, with the photosensitive power supply module mounted on the float and floating on the water surface, one end of which is fixedly connected to one end of the electric telescopic rod, and the solar panel mounted on the ring surface of the float; A support surface composed of several interlaced supports is located at the annular opening of the floating plate, supports the artificial aquatic plants, and is fixedly connected to the other end of the electric telescopic rod; The support surface is not higher than the upper surface of the floating plate.

6. The photocatalytic purification floating bed based on photosensitive power supply and operating 24 / 7 as described in claim 1, characterized in that, The base has several fixing slots, and the LED light source is fixed inside the fixing slots.

7. A photocatalytic purification floating bed based on photosensitive power supply that operates 24 / 7, as described in claim 6, is characterized in that... The diameter of the fixing groove on the base is the same as the outer diameter of the sleeve, and the lower end of the sleeve is fixed in the fixing groove.

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