Solar photocatalytic degradation pollutant experimental device

Abstract

The invention discloses a solar photocatalytic degradation pollutant experimental device which comprises a box body, a light source, a solar power generation module, a photocatalytic degradation structure and a filtering structure, the box body is obliquely arranged, the inclination angle can be adjusted, a box plate of the box body is a transparent plate, a plurality of degradation bins which are sequentially connected in series are arranged in the box body from top to bottom, and the photocatalytic degradation structures are rotatably arranged in the degradation bins; the filtering structure is arranged in the degradation bin, the light source is arranged on the box body and is electrically connected with the solar power generation module, and the photocatalytic degradation structure can degrade pollutants in the water sample in the degradation bin by utilizing the light source and / or sunlight. Substances with large molecular weight in the water body can be intercepted through the arranged filtering structure, so that the separation or concentration effect is achieved, and the water body degradation effect is improved; the obliquely-arranged box body can increase the flow speed of water in the degradation bin and improve the degradation efficiency, meanwhile, the photocatalytic degradation structure is rotationally arranged in a matched mode, the water can drive the photocatalytic degradation structure to rotate when flowing in the degradation bin, the water makes full contact with photocatalytic pieces on the photocatalytic degradation structure, and the degradation effect is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of photocatalytic degradation of pollutants, and in particular to a solar-powered photocatalytic degradation of pollutants experimental device. Background Art

[0002] At present, global water resources are facing unprecedented challenges. With the intensification of industrial chemical activities, the deterioration of water quality has become a severe reality. At present, emerging types of pollutants are constantly emerging, including persistent organic pollutants (POPs) that pose a potential threat to the environment and human health. For example, substances such as polychlorinated biphenyls (PCBs), organochlorine pesticides (OCPs) and polycyclic aromatic hydrocarbons (PAHs), there are many other new pollutants in water, such as endocrine disruptors, antibiotics, microplastics and a series of bacteria and microorganisms. These pollutants not only pose new threats to water quality, but also pose new challenges to human health and ecological balance. Therefore, it is necessary to develop effective water treatment technologies and find comprehensive solutions that can efficiently remove persistent organic pollutants, endocrine disruptors, antibiotic residues, microplastic particles and various harmful bacteria in water to protect our water resources and ensure the health and sustainable development of the earth's ecosystem.

[0003] Photocatalytic degradation refers to the process of using highly active free radicals produced by radiation and photocatalysts in the reaction system to degrade all pollutants into inorganic substances through processes such as addition, substitution, and electron transfer between free radicals and organic pollutants. It is an effective method for degrading pollutants in water and has the characteristics of environmental friendliness and high-efficiency degradation.

[0004] Traditional sewage treatment equipment has problems such as high energy consumption, high cost, possible secondary pollution, complex operation and limited treatment efficiency. Summary of the invention

[0005] The present invention provides a solar-type photocatalytic degradation of pollutants experimental device, which aims to treat / degrade sewage efficiently, economically and environmentally friendly through a photocatalytic reaction driven by solar energy.

[0006] In order to achieve the above object, the technical solution of the present invention is:

[0007] A solar-powered photocatalytic degradation pollutant experimental device comprises a box, a light source, a solar power generation module, a photocatalytic degradation structure and a filtering structure;

[0008] The box body is tilted and the tilt angle can be adjusted. A plurality of degradation chambers connected in series are arranged in the box body from top to bottom. The photocatalytic degradation structure is rotatably arranged in the degradation chamber. The filtering structure is arranged in the degradation chamber. The light source is arranged on the box body and is electrically connected to the solar power generation module. The photocatalytic degradation structure can utilize the light source and / or sunlight to degrade pollutants in the water sample in the degradation chamber.

[0009] Furthermore, the photocatalytic degradation structure includes a mounting base and a plurality of photocatalyst coating sheets rotatably mounted on the mounting base via a connecting shaft, the plurality of photocatalyst coating sheets are radially arranged on the periphery of the connecting shaft with the axis of the connecting shaft as the center, and the mounting base is detachably mounted on the bottom plate of the box.

[0010] Furthermore, the filtering structure is a semi-permeable membrane, a mounting groove is provided on the bottom plate of the box body, and the semi-permeable membrane is detachably mounted in the mounting groove.

[0011] Furthermore, the degradation bin is transversely arranged in the box body, the water inlet end of the degradation bin arranged at the upper part is communicated with the water inlet tank, and the water outlet end of the degradation bin arranged at the lower part is communicated with the water collecting tank.

[0012] Furthermore, it also includes a base, and the box body is connected to the base through a lifting and adjusting structure.

[0013] Furthermore, a reflective plate is provided on the box body.

[0014] Furthermore, a data detection sensor is installed in the water collecting tank.

[0015] Furthermore, the solar power generation module includes a solar panel and a power module;

[0016] The solar panel is arranged on the lower side of the bottom plate of the box body, and the power module is arranged on the box body and is electrically connected with the solar panel.

[0017] Furthermore, a peristaltic pump is provided between the water inlet tank and the upper degradation bin and between the water collecting tank and the lower degradation bin.

[0018] The beneficial effects of the present invention are:

[0019] The invention discloses a solar-powered photocatalytic degradation pollutant experimental device. The filter structure provided can intercept substances with large molecular weight in water, thereby achieving separation or concentration effects and improving the degradation effect of water. The box with adjustable tilt angle can adjust the angle of the box according to the light intensity, so that the device can receive light to the maximum extent and improve the degradation efficiency. At the same time, the photocatalytic degradation structure can be rotatably arranged so that the photocatalytic degradation structure can be driven to rotate when the water flows in the degradation bin, so that the water is fully in contact with the photocatalytic sheet on the photocatalytic degradation structure to ensure the degradation effect. The rotatable photocatalytic degradation structure can also play a role in stirring the water, further improving the degradation efficiency. The solar power generation module enables the device to achieve 24-hour all-weather continuous degradation. The use of sunlight can reduce the cost of sewage treatment, with low energy consumption. The device is easy to operate and has no secondary pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 The structure of a solar-powered photocatalytic degradation pollutant experimental device disclosed in the first embodiment of the present invention is schematically shown. Figure 1 ;

[0022] Figure 2 The structure of a solar-powered photocatalytic degradation pollutant experimental device disclosed in the first embodiment of the present invention is schematically shown. Figure 2 ;

[0023] Figure 3 The structure of a solar-powered photocatalytic degradation pollutant experimental device disclosed in the first embodiment of the present invention is schematically shown. Figure 3 ;

[0024] Figure 4 This is a schematic structural diagram of a photocatalytic degradation structure of a solar-powered photocatalytic degradation pollutant experimental device disclosed in Example 1 of the present invention.

[0025] In the figure:

[0026] 1. Box body;

[0027] 2. Light source;

[0028] 3. Solar power generation module; 31. Power module;

[0029] 4. Photocatalytic degradation structure; 41. Mounting base; 42. Photocatalyst coating sheet; 43. Connecting shaft;

[0030] 5. Filter structure;

[0031] 6. Water inlet tank;

[0032] 7. Water collecting tank;

[0033] 8. Degradation chamber;

[0034] 9. Base;

[0035] 10. Reflector;

[0036] 11. Lifting and lowering adjustment structure;

[0037] 12. Peristaltic pump;

[0038] 13. Remote control module. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0040] Embodiment 1:

[0041] like Figure 1-3 The present embodiment shows a solar-powered photocatalytic degradation pollutant experimental device, which includes a housing 1, a light source 2, a solar power generation module 3, a photocatalytic degradation structure 4 and a filtering structure 5;

[0042] The housing 1 is tilted and the tilt angle is adjustable. A plurality of degradation chambers 8 are arranged in series from top to bottom in the housing 1. The photocatalytic degradation structure 4 is rotatably arranged in the degradation chamber 8. The filtering structure 5 is arranged in the degradation chamber 8. The light source 2 is arranged on the housing 1 and is electrically connected to the solar power generation module 3. The photocatalytic degradation structure 4 can utilize the light source 2 and / or sunlight to degrade pollutants in the water sample in the degradation chamber 8.

[0043] Box body 1 is made of ultra-white glass plate, and the box top cover is a detachable box structure, which is convenient for replacing the photocatalyst coating sheet and semi-transparent membrane in the box; light source 2 is an ultraviolet light tube, which is used to replace or supplement the light source intensity to degrade water samples when sunlight is insufficient.

[0044] The invention discloses a solar-powered photocatalytic degradation experimental device for pollutant degradation. The filter structure provided can intercept substances with large molecular weight in water, thereby achieving separation or concentration effects and improving the degradation effect of water. The inclined box body can increase the flow rate of water in the degradation bin and improve the degradation efficiency. At the same time, the photocatalytic degradation structure can be rotatably provided so that the photocatalytic degradation structure can be driven to rotate when the water flows in the degradation bin, so that the water is fully in contact with the photocatalytic sheet on the photocatalytic degradation structure to ensure the degradation effect. The rotatable photocatalytic degradation structure can also play a role in stirring the water, further improving the degradation efficiency. The solar power generation module enables the device to achieve 24-hour all-weather continuous degradation. The use of sunlight can reduce the cost of sewage treatment, with low energy consumption. The device is easy to operate and has no secondary pollution.

[0045] In a specific embodiment, Figure 4 As shown, the photocatalytic degradation structure 4 includes a mounting base 41 and a plurality of photocatalyst coating sheets 42 rotatably mounted on the mounting base 41 through a connecting shaft 43, and the plurality of photocatalyst coating sheets 42 are radially arranged on the periphery of the connecting shaft with the axis of the connecting shaft as the center, and the mounting base is detachably mounted on the bottom plate of the box body 1; the photocatalyst coating sheet is a photocatalyst sheet body, and a plurality of photocatalyst coating sheets are provided, which can increase the contact area between the water body and the photocatalyst in the degradation chamber 8, and are radially arranged on the periphery of the connecting shaft, which can better stir the water body, further increase the contact frequency between the water body and the photocatalyst coating sheet, and improve the uniformity of the water body in the degradation chamber 8, thereby improving the degradation rate and degradation effect of the water body;

[0046] In this embodiment, no driving device is provided in the mounting base, and the water flow in the degradation chamber 8 drives the photocatalyst coating sheet to rotate. As the photocatalyst coating sheet rotates continuously, the water is stirred, and the water in the degradation chamber 8 becomes more uniform, thereby improving the degradation rate and degradation effect of the water.

[0047] In a specific embodiment, the filtering structure 5 is a semipermeable membrane, and a mounting groove is provided on the bottom plate of the box body 1, and the semipermeable membrane is detachably installed in the mounting groove; under the action of external pressure, solutes and water with a molecular weight less than the membrane cutoff molecular weight in the solution pass through the semipermeable membrane, and macromolecular solutes are retained by the semipermeable membrane, thereby achieving the effect of water separation or concentration, and realizing efficient enrichment and separation of pollutants in the water body; in this embodiment, a semipermeable membrane is arranged in each degradation chamber 8, and the particle size of the semipermeable membranes is the same. The water body passes through multiple degradation chambers 8, and multiple semipermeable membranes realize multiple enrichment and separation of the water body, which can ensure the effect of water separation or concentration, and facilitate efficient degradation of pollutants in the water body;

[0048] The pore size and number of semipermeable membranes can be determined according to the water environment in which the user is located and the specific pollutants to be degraded by the photocatalyst. For example, if the user wants to degrade antibiotics in part of the water of an inland river, after completing the pretreatment of the inland river water sample (removing large particles), select a suitable ultrafiltration membrane (pore size at the nanometer level) and place it in the installation groove on the bottom plate of the box 1, and pass the pretreated water sample into the degradation chamber 8 in the box 1, and then the water sample is filtered through the semipermeable membrane, the antibiotic molecules are retained, and the water and smaller molecular pollutants pass through the semipermeable membrane to the next degradation chamber for degradation, and finally enter the water collection tank. After the experiment, the semipermeable membrane can be removed, and the antibiotics collected and enriched on the semipermeable membrane can be subsequently analyzed or processed.

[0049] In a specific embodiment, the degradation bin 8 is horizontally arranged in the box body 1, the water inlet end of the degradation bin 8 arranged at the upper part is connected with the water inlet tank 6, and the water outlet end of the degradation bin 8 arranged at the lower part is connected with the water collecting tank 7; the sewage to be degraded is pumped from the water inlet tank 6 to the degradation bin located at the top of the box body through a peristaltic pump, and the water outlet end of the degradation bin is connected to the water inlet end of the next degradation bin. The water to be degraded is pumped into the degradation bin from the water inlet tank through the peristaltic pump and is degraded in each degradation bin in turn, and finally enters the water collecting tank.

[0050] In a specific embodiment, a base 9 is further included, and the box body 1 is connected to the base via a lifting and adjusting structure 11; in this embodiment, the lifting and adjusting structure is a cylinder, the cylinder is fixed on the base, and the cylinder piston end is connected to the upper part of the box body 1; the angle of the box body 1 can be adjusted according to the ambient light conditions, thereby adjusting the intensity and angle of the light source 2 to ensure that the degradation requirements are met and the photocatalytic reaction is continued.

[0051] In a specific embodiment, a reflective plate 10 is provided on the box 1. The reflective plate 10 is provided at the edge of the box 1 and at the outside of the light source 2. When degradation is performed using the light from the light source 2, the reflective plate is provided to maximize the use of the light and ensure the degradation effect of the device.

[0052] In a specific embodiment, a data detection sensor is installed in the water collecting tank. The data detection sensor is a pH sensor and a dissolved oxygen sensor to monitor and collect parameter data such as pH and dissolved oxygen of the water in the water collecting tank in real time. The water collecting tank is also provided with a sampling port for sampling or further processing of the degraded water.

[0053] In a specific embodiment, the solar power generation module 3 includes a solar panel and a power module 31;

[0054] The solar panel is arranged on the lower side of the bottom plate of the box body 1, and the power module is arranged on the box body 1 and is electrically connected to the solar panel; in the present embodiment, the solar panel is a polycrystalline silicon 12V200W collector panel, and the power module includes a CHiNT battery, a photovoltaic controller and an inverter. The CHiNT battery can store the electric energy generated by the solar panel, and the photovoltaic controller is used to control and manage the operation of the solar panel, the battery and other equipment, and the inverter is used to convert the direct current DC generated by the solar panel into alternating current AC. The solar power generation module 3 converts light energy into electrical energy through the principle of photovoltaic power generation, and stores part of the electrical energy in the battery to provide the required power for the operation of the device.

[0055] In a specific embodiment, Figure 1-3 As shown, a peristaltic pump 12 is provided between the water inlet tank and the upper degradation bin 8 and between the water collecting tank and the lower degradation bin 8, and the peristaltic pump is used to provide power for the flow of water.

[0056] In a specific embodiment, Figure 1 As shown, it also includes a remote control module 13, which is used to control the flow rate of the peristaltic pump 12, the opening and closing of the light source 2, and the lifting of the lifting device; the remote control module uses STM32F103 as the main control unit, and integrates ESP8266 chip as a WIFI communication module. Signal transmission, recognition, processing and execution of commands are all completed by STM32F103. The STM32F103 main controller obtains the concentration of pollutants in the sewage and the sunlight intensity information measured by the data detection sensor through the WIFI module, and transmits the data obtained through the WIFI module. The data is transmitted to the cloud platform, and the STM32F103 main controller receives instructions from the cloud platform in real time through the WIFI module, and accurately controls and adjusts each component in the device, including the adjustment of the water inlet and outlet rates of the peristaltic pump and the control of the switching state of the simulated light source 2, so as to optimize the contact time between the sewage and the photocatalyst, improve the degradation efficiency, and adjust the light intensity of the device to provide different lighting conditions to ensure that the degradation conditions meet the experimental needs; the remote control module is a prior art, and the specific principles of obtaining the transmission data and controlling and adjusting the various components are not repeated here.

[0057] Embodiment 2:

[0058] The difference between this embodiment and embodiment 1 is that, in this embodiment, the apertures of the semipermeable membranes in different degradation bins 8 are different, and the apertures of the semipermeable membranes decrease from top to bottom, so as to filter the water in the bin step by step, thereby ensuring the filtering effect on the water, and thus further ensuring the degradation effect. A driving device is provided in the mounting base of the photocatalytic degradation structure 4, and the driving device is a servo motor. The driving device drives the rotation in the direction opposite to the flow direction of the water to form a vortex near it, slow down the flow rate of the water, and increase the contact time between the photocatalyst coating sheet and the water, thereby ensuring the degradation effect. In actual use, the aperture of the semipermeable membrane can be set according to requirements.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A solar-powered photocatalytic degradation of pollutants experimental device, characterized in that: It comprises a housing (1), a light source (2), a solar power generation module (3), a photocatalytic degradation structure (4) and a filtering structure (5); The housing (1) is tilted and the tilt angle is adjustable. A plurality of degradation chambers (8) are arranged in series from top to bottom in the housing (1). The photocatalytic degradation structure (4) is rotatably arranged in the degradation chamber (8). The filtering structure (5) is arranged in the degradation chamber (8). The light source (2) is arranged on the housing (1) and is electrically connected to the solar power generation module (3). The photocatalytic degradation structure (4) can utilize the light source (2) and / or sunlight to degrade pollutants in a water sample in the degradation chamber (8).

2. A solar-powered photocatalytic degradation of pollutants experimental device according to claim 1, characterized in that: The photocatalytic degradation structure (4) comprises a mounting base (41) and a plurality of photocatalyst coating sheets (42) rotatably mounted on the mounting base (41) via a connecting shaft (43); the plurality of photocatalyst coating sheets (42) are radially arranged on the periphery of the connecting shaft with the axis of the connecting shaft as the center; and the mounting base is detachably mounted on the bottom plate of the housing (1).

3. According to claim 1, a solar-powered photocatalytic degradation of pollutants experimental device is characterized in that: The filtering structure (5) is a semi-permeable membrane, and a mounting groove is provided on the bottom plate of the box body (1), and the semi-permeable membrane is detachably mounted in the mounting groove.

4. The solar-powered photocatalytic degradation of pollutants experimental device according to claim 1 is characterized in that: The degradation bin (8) is arranged transversely in the box body (1); the water inlet end of the degradation bin (8) arranged at the upper part is connected to the water inlet box (6), and the water outlet end of the degradation bin (8) arranged at the lower part is connected to the water collecting box (7).

5. The solar-powered photocatalytic degradation of pollutants experimental device according to claim 1, characterized in that: It also comprises a base (9), and the box body (1) is connected to the base via a lifting and adjusting structure (11).

6. The solar-powered photocatalytic degradation of pollutants experimental device according to claim 1, characterized in that: A reflective plate (10) is provided on the box body (1).

7. The solar-powered photocatalytic degradation of pollutants experimental device according to claim 4 is characterized in that: A data detection sensor is installed in the water collecting box (7).

8. The solar-powered photocatalytic degradation of pollutants experimental device according to claim 1 is characterized in that: The solar power generation module (3) comprises a solar panel and a power module (31); The solar panel is arranged on the lower side of the bottom plate of the box (1), and the power module is arranged on the box (1) and is electrically connected to the solar panel.

9. The solar-powered photocatalytic degradation of pollutants experimental device according to claim 4 is characterized in that: A peristaltic pump (12) is provided between the water inlet tank (6) and the upper degradation chamber (8), and between the water collecting tank (7) and the lower degradation chamber (8).

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