Photocatalytic decontamination floating bed based on all-day operation of photosensitive power supply

Abstract

A photosensitive power supply module supplies power to an electric telescopic rod when monitoring that the illumination intensity on the water surface reaches a preset threshold value, the electric telescopic rod stretches and retracts in a reciprocating mode to drive artificial aquatic plants to periodically immerse into the water surface or emerge from the water surface during power supply, and in the immersion process, the electric telescopic rod drives the artificial aquatic plants to float out of the water surface; the surface of the artificial aquatic plant adsorbs pollutants in a water area, and in the floating process, the photocatalytic composite film can perform photocatalytic decontamination on the adsorbed pollutants under natural illumination; the photosensitive power supply module supplies power to the light-emitting assembly when monitoring that the illumination intensity on the water surface is lower than a preset threshold value, the electric telescopic rod is kept in an extension or compression state to drive the artificial aquatic plants to be immersed into the water surface, and the light-emitting assembly conducts close-range illumination on the photocatalytic composite film. The photocatalytic composite film can perform photocatalytic removal on pollutants in water under the condition of no light or weak light, so that all-day and all-time effective photocatalytic decontamination is realized.

Description

Technical Field

[0001] The invention relates to a photocatalytic pollution-cleaning floating bed based on photosensitive power supply, belonging to the technical field of water environment protection. Background Art

[0002] With the continuous progress of human society and the rapid development of modern industry, various synthetic and complex chemical products have appeared in all aspects of human life, and the resulting water pollution problem has become increasingly serious. At present, difficult-to-degrade pollutants such as pesticides, dyes, phenols and antibiotics have been widely present in rivers and lakes. These pollutants have the characteristics of complex composition, high toxicity and strong bioaccumulation. As time goes by, they will inevitably pose a serious threat to the water environment, water ecosystem and even the health of residents. Therefore, how to safely, quickly and efficiently remove these water pollutants has become one of the current research focuses in the field of river and lake water pollution control.

[0003] Artificial floating bed technology has become the preferred solution in the field of water ecological restoration due to its simple construction, low cost, strong in-situ restoration ability and good landscape effect. However, this technology still faces many problems in application, such as long pollutant degradation cycle, susceptibility to fluctuations in external conditions such as climate and water quality, cumbersome handling of plant residues on the floating bed, and high maintenance costs. As the core plants of the floating bed, they have high requirements for the growth environment and it is difficult for them to survive and purify in an environment with high pollution load and high toxicity. Moreover, their purification ability is mostly limited to nitrogen, phosphorus and some specific pollutants, and the removal effect of difficult-to-degrade organic pollutants in complex water bodies is limited. Therefore, improving the environmental adaptability of floating bed technology and improving its water purification efficiency have become technical problems that need to be overcome urgently.

[0004] Photocatalytic technology has shown great application potential in the fields of energy, materials and environmental governance due to its advantages of being green, environmentally friendly and low in energy consumption. Under mild conditions, this technology can convert light energy into chemical energy through photocatalysts, promote the mineralization of pollutants into harmless substances such as carbon dioxide, water and inorganic salts, and achieve non-toxic or low-toxic treatment. It is especially suitable for treating organic pollutants that are difficult to degrade. However, this technology still faces many problems in the actual application of natural water pollutant treatment. First of all, this technology has high requirements for lighting conditions. Under low light intensity conditions such as at night, its pollution removal efficiency will be significantly reduced. At the same time, when treating water bodies with high pollution concentrations and low transparency, light can hardly penetrate. The above problems limit the pollution removal ability of photocatalysts underwater.

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

[0006] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a photocatalytic pollution-purifying floating bed based on photosensitive power supply, aiming to solve the problems of plants being greatly affected by the environment, high maintenance costs, and easy to rot and cause secondary pollution in traditional plant floating bed devices. At the same time, it also solves the problem of low pollutant removal efficiency of photocatalytic materials in water bodies caused by short natural light illumination time and low underwater light intensity. The present invention combines photocatalytic technology with artificial floating bed technology, which can effectively improve the water purification effect of artificial floating beds.

[0007] A photocatalytic pollution-cleaning floating bed that operates all day based on photosensitive power supply, the floating bed is floated on the water surface, and the floating bed comprises:

[0008] Photosensitive power supply module, real-time monitoring of light intensity on the water surface;

[0009] A plurality of electric telescopic rods electrically connected to the photosensitive power supply module;

[0010] A plurality of artificial water plants are connected to the electric telescopic rod, covered with a photocatalytic composite film, and a light-emitting component is transparently installed inside;

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

[0012] Furthermore, a light-emitting component is transparently installed inside the artificial aquatic plant, and 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 does not reach a preset threshold, it supplies power to the light-emitting component. When not powered, the electric telescopic rod remains in an extended or contracted state, thereby driving the artificial aquatic plant to immerse in the water. At this time, the light-emitting component irradiates the photocatalytic composite membrane at a close distance, so that the photocatalytic composite membrane photocatalytically removes pollutants in the water.

[0013] Furthermore,

[0014] The photosensitive power supply module comprises:

[0015] Battery components;

[0016] A controller electrically connected to the battery assembly;

[0017] A photosensor, connected to the controller signal;

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

[0019] Furthermore,

[0020] The battery assembly comprises:

[0021] Solar panels,

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

[0023] A storage battery is electrically connected to the voltage conversion module, and the storage battery is electrically connected to the controller.

[0024] Furthermore,

[0025] The electric telescopic rod drives the artificial water plants to be immersed in the water when extended, and drives the artificial water plants to float out of the water when retracted;

[0026] or,

[0027] The electric telescopic rod drives the artificial water plants to float on the water surface when extended, and drives the artificial water plants to immerse in the water surface when retracted.

[0028] Furthermore,

[0029] The floating bed also includes:

[0030] An annular floating plate, the photosensitive power supply module is arranged on the floating plate, floats on the water surface, one end surface is fixedly connected to one end of the electric telescopic rod, and the solar cell panel is arranged on the annular surface of the floating plate;

[0031] A support surface composed of a plurality of staggered supports is arranged at the annular cavity of the floating plate, supports the artificial water grass, 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] A plurality of blades forming a grass shape are arranged on the base;

[0037] Light-emitting components can be transparently installed inside the base and the blades;

[0038] The light emitting component comprises:

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

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

[0041] The film-coated sleeve, the LED light source and the light-guiding optical fiber are arranged in the film-coated sleeve, and are 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 surface of the sleeve is loaded with the photocatalytic composite film. The LED light source and the light-guiding optical fiber are arranged in 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] A plurality of fixing grooves are provided on the base, and the LED light sources are fixed inside the fixing grooves.

[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 fixedly connected to the fixing groove.

[0048] The beneficial effects achieved by the present invention are:

[0049] 1. The present invention uses solar cells as power sources. By periodically extending and retracting the electric telescopic rod during the day or under conditions of high light intensity, the two processes of light degradation of artificial aquatic plants on the water surface and adsorption under the water surface can be alternately performed, which 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 in weak light conditions, the electric telescopic rod can remain extended, the artificial aquatic plants will be immersed in the water, and the LED light source will directly illuminate the artificial aquatic plants, realizing full-time adsorption and photodegradation of pollutants at night or in weak light conditions, significantly improving the water purification efficiency of the floating bed.

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

[0052] 4. The swing of the flexible leaves of artificial water plants in the flowing water can promote 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 swing of the leaves helps to increase the oxygen content at the photocatalytic liquid-solid reaction interface and improve the photocatalytic reaction rate.

[0053] 5. The leaves of artificial aquatic plants are thin strips with a large specific surface area, which can increase the loading amount of photocatalytic materials and the effective photocatalytic reaction area of ​​artificial aquatic plants, and improve the pollutant removal efficiency of artificial aquatic plants.

[0054] 6. The invention has a beautiful appearance and can emit light at night, has a good landscape effect, and can be applied to water purification work in various water bodies in cities, rural areas, etc.

[0055] 7. The present invention has a simple structure, is easy to maintain, has low manufacturing and maintenance costs, and is suitable for mass production. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

[0059] Figure 4 Schematic diagram of artificial water grass of the present invention;

[0060] Figure 5 It is a top view and a partial enlarged view of the artificial water grass base of the present invention;

[0061] Figure 6 is a partial cross-sectional view of the artificial waterweed blade of the present invention;

[0062] Figure 7 It is the AA section view of the blade;

[0063] The meanings of the marks in the attached drawings are: 1 is the floating plate; 2 is the bracket 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 light-guiding optical fiber; 13 is the casing; and 14 is the photocatalytic composite film. DETAILED DESCRIPTION

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

[0065] Reference Figures 1 to 3 , a photocatalytic pollution-removing floating bed based on photosensitive power supply and running all day, the floating bed is floated on the water surface, and the floating bed comprises:

[0066] Photosensitive power supply module 5, used for real-time monitoring of light intensity on the water surface;

[0067] A plurality of electric telescopic rods 6, electrically connected to the photosensitive power supply module 5;

[0068] A plurality of artificial water plants 4 are connected to the electric telescopic rod 6, covered with a photocatalytic composite film 14, and a light-emitting component is transparently installed inside;

[0069] The photosensitive power supply module 5 supplies power to the electric telescopic rod 6 when the light intensity on the monitored water surface reaches a preset threshold. When power is supplied, the electric telescopic rod 6 reciprocates and extends to drive the artificial water grass to periodically immerse in the water surface 7 or float out of the water surface 7.

[0070] It is worth noting that, in the process of being immersed in the water surface 7 , the surface of the artificial water grass 4 adsorbs pollutants in the water area, and in the process of floating on the water surface 7 , the photocatalytic composite membrane 14 performs photocatalytic purification on the adsorbed pollutants.

[0071] Furthermore, a light-emitting component is transparently installed inside the artificial water grass 4, and 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 does not reach a preset threshold, it supplies power to the light-emitting component. When not powered, the electric telescopic rod 6 remains in an extended or contracted state, thereby driving the artificial water grass 4 to immerse in the water. At this time, the light-emitting component irradiates the photocatalytic composite membrane 14 at a close distance, so that the photocatalytic composite membrane 14 photocatalytically removes pollutants in the water.

[0072] The pollution-cleaning effect of the artificial aquatic plants 4 is further improved, so that the floating bed can operate all day and clean the pollution throughout the whole process.

[0073] Furthermore, in one example,

[0074] The electric telescopic rod 6 drives the artificial water plants 4 to immerse into the water surface when extending, and drives the artificial water plants 4 to float out of the water surface when contracting;

[0075] or,

[0076] The electric telescopic rod 6 drives the artificial water plants 4 to float out of the water when extended, and drives the artificial water plants 4 to immerse in the water when retracted.

[0077] Of course, other mechanical structures that can drive the artificial aquatic plants 4 to be immersed in water, such as a crank structure, can also be used, as long as it can drive the artificial aquatic plants 4 to be immersed in water periodically or 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] A battery assembly for supplying power;

[0080] A controller electrically connected to the battery assembly;

[0081] A photosensor, connected to the controller signal;

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

[0083] Furthermore, in one example,

[0084] The battery assembly comprises:

[0085] A solar panel 3, comprising a plurality of solar cells;

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

[0087] A storage battery is electrically connected to the voltage conversion module, and the storage battery is electrically connected to the controller.

[0088] Furthermore,

[0089] The floating bed also includes:

[0090] An annular floating plate 1, the photosensitive power supply module 5 is arranged on the floating plate 1, floating on the water surface, one end surface of which is fixedly connected to one end of the electric telescopic rod 6, and the solar cell panel 3 is arranged on the annular surface of the floating plate 1;

[0091] A support surface 2 composed of a plurality of staggered supports is arranged at the annular cavity of the floating plate 1, supports the artificial water grass 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] Further, in one example, referring to Figure 4 ,

[0094] The artificial waterweed 4 comprises:

[0095] Base 9;

[0096] A plurality of blades 8 forming a grass shape are arranged on the base;

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

[0098] The light emitting component comprises:

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

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

[0101] The film-coated sleeve, the LED light source and the light-guiding optical fiber are arranged in the film-coated sleeve, and are covered with the photocatalytic composite film.

[0102] Among them, the blade 8 is a flexible thin strip structure with a large specific surface area, which can increase the photocatalytic material loading and effective photocatalytic reaction area of ​​the artificial waterweed 4, and improve the pollutant removal efficiency of the artificial waterweed. In addition, the swinging of the blade in the 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 swinging of the blade helps to increase the oxygen content of the photocatalytic liquid-solid reaction interface and improve the photocatalytic reaction rate.

[0103] Further, in one example, referring to Figures 5 to 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 surface of the sleeve 13 is loaded with the photocatalytic composite film 14. The LED light source 11 and the light-guiding optical fiber 12 are arranged in 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 is provided with a plurality of fixing grooves 10, and the LED light source 11 is fixed inside the fixing grooves 10. The diameter of the fixing grooves 10 provided 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 grooves 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 light sensor recognizes that it is daytime or the light intensity is higher than the preset threshold, the pulse timer starts. At this time, the artificial water grass 4 does not emit light, the electric telescopic rod 6 extends, and the artificial water grass 4 is immersed in the water. The pollutants in the water can be fully adsorbed on the surface of the artificial water grass 4. After a period of time, the electric telescopic rod 6 shrinks and drives the artificial water grass 4 to emerge from the water surface 7. At this time, the TiO 2 The particles can undergo a photocatalytic reaction under natural light, and photocatalytically remove pollutants adsorbed on the surface of the blades 8. After a period of time, the electric telescopic rod 6 is extended, and the artificial water grass 4 is immersed in the water, entering a cycle. Under the action of the electric telescopic rod 6, the artificial water grass 4 repeatedly repeats the actions of immersion and exposure, thereby achieving the purpose of coordinated adsorption and photodegradation processes. When the photosensitive sensor recognizes that it is nighttime or the light intensity is lower than a preset threshold, the electric telescopic rod 6 remains extended, driving the artificial water grass 4 to maintain an immersed state. At this time, the photosensitive power supply module 5 supplies power to the LED light source 11, and the light is guided by the light-guiding optical fiber 12 to directly illuminate the photocatalytic composite film 14 on the surface of the blade 8 at a close distance, thereby achieving the purpose of photocatalytic pollution removal under low light intensity conditions such as nighttime.

[0109] The device can use solar panels as power source, combined with electric telescopic rod 6 and photosensitive power supply module 5, to achieve 24-hour uninterrupted purification of pollutants in water. The device should be maintained every 3 to 6 months, clean the attachments on the surface of the device, and replace the leaves 8 of the artificial water grass 4 to ensure the efficient operation of the entire device.

[0110] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A photocatalytic pollution-removing floating bed that operates all day based on photosensitive power supply, characterized in that: The floating bed is floated on the water surface, and the floating bed comprises: Photosensitive power supply module, real-time monitoring of light intensity on the water surface; A plurality of electric telescopic rods electrically connected to the photosensitive power supply module; A plurality of artificial water plants are connected to the electric telescopic rod, covered with a photocatalytic composite film, and a light-emitting component is transparently installed inside; The photosensitive power supply module supplies power to the electric telescopic rod when the light intensity on the monitored water surface reaches a preset threshold. When power is supplied, the electric telescopic rod reciprocates and extends to drive the artificial aquatic plants to periodically immerse in the water surface or float out of the water surface. During the immersion process, the surface of the artificial aquatic plants adsorbs pollutants in the water area, and during the floating process, the photocatalytic composite membrane photocatalytically purifies the adsorbed pollutants.

2. According to claim 1, a photocatalytic pollution-removing floating bed based on photosensitive power supply and running all day long is characterized in that: A light-emitting component is transparently installed inside the artificial water grass, and 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 does not reach a preset threshold, it supplies power to the light-emitting component. When no power is supplied, the electric telescopic rod remains in an extended or contracted state, thereby driving the artificial water grass to immerse in the water surface. At this time, the light-emitting component irradiates the photocatalytic composite membrane at a close distance, so that the photocatalytic composite membrane photocatalytically removes pollutants in the water.

3. A photocatalytic pollution-removing floating bed based on photosensitive power supply and running all day long according to claim 1 or 2, characterized in that: The photosensitive power supply module comprises: Battery components; A controller, electrically connected to the battery assembly; A photosensor, connected to the controller signal; A pulse timer is connected to the controller signal and is used to control the extension and retraction of the electric telescopic rod.

4. The photocatalytic pollution-removing floating bed based on photosensitive power supply and running all day long according to claim 3 is characterized in that: The battery assembly comprises: Solar panels, A voltage conversion module, electrically connected to the solar panel; A storage battery is electrically connected to the voltage conversion module, and the storage battery is electrically connected to the controller.

5. The photocatalytic pollution-removing floating bed based on photosensitive power supply and running all day long according to claim 1 is characterized in that: The electric telescopic rod drives the artificial water plants to be immersed in the water when extended, and drives the artificial water plants to float out of the water when retracted; or, The electric telescopic rod drives the artificial water plants to float on the water surface when extended, and drives the artificial water plants to immerse in the water surface when retracted.

6. The photocatalytic pollution-removing floating bed based on photosensitive power supply and running all day long according to claim 4 is characterized in that: The floating bed also includes: An annular floating plate, the photosensitive power supply module is arranged on the floating plate, floats on the water surface, one end surface is fixedly connected to one end of the electric telescopic rod, and the solar cell panel is arranged on the annular surface of the floating plate; A support surface composed of a plurality of staggered supports is arranged at the annular cavity of the floating plate, supports the artificial water grass, 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 annular floating plate.

7. The photocatalytic pollution-removing floating bed based on photosensitive power supply and running all day long according to claim 1 is characterized in that: The artificial aquatic plants include: Base; A plurality of blades forming a grass shape are arranged on the base; Light-emitting components can be transparently installed inside the base and the blades; The light emitting component comprises: An LED light source is disposed in the base and electrically connected to the photosensitive power supply module; A light-guiding optical fiber is arranged in the blade and coupled to the LED light source; The film-coated sleeve, the LED light source and the light-guiding optical fiber are arranged in the film-coated sleeve, and are covered with the photocatalytic composite film.

8. The photocatalytic pollution-removing floating bed based on photosensitive power supply and running all day long according to claim 7 is characterized in that: 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 surface of the sleeve is loaded with the photocatalytic composite film. The LED light source and the light-guiding optical fiber are arranged in the sleeve. The photocatalytic composite film is composed of a resin layer and a nano titanium dioxide layer from the inside to the outside.

9. The photocatalytic pollution-removing floating bed based on photosensitive power supply and running all day long according to claim 7, characterized in that: A plurality of fixing grooves are provided on the base, and the LED light sources are fixed inside the fixing grooves.

10. The photocatalytic pollution-removing floating bed based on photosensitive power supply and running all day long according to claim 9, 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 fixedly connected to the fixing groove.

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