Organic pollutant degradation system and method driven by visible light

Abstract

The invention relates to the technical field of environmental governance, and discloses a visible light driven organic pollutant degradation system and method.The visible light driven organic pollutant degradation system comprises a light source system, a photocatalytic reactor, a catalyst and a control system, the light source system adopts a visible light source such as an LED lamp or a halogen lamp, and the light source system further comprises a reflector and a lens; the photocatalytic reactor is made of a transparent material, such as glass or quartz, a plurality of catalyst carriers are arranged in the photocatalytic reactor, the photocatalytic reactor is further provided with a feeding hole and a discharging hole, and a catalyst adopts a photocatalytic material with visible light response, such as titanium dioxide doped with nitrogen or carbon; the light source system, the photocatalytic reactor, the catalyst and the control system are integrated, the photocatalytic material responding to visible light is utilized, organic pollutants can be efficiently degraded under visible light irradiation, the practicability and generalization performance of the photocatalytic technology are improved, the cost of a visible light source is low, the photocatalytic material can be repeatedly used, and the operation cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of environmental governance, and particularly to an organic pollutant degradation system and method driven by visible light. Background Art

[0002] With the rapid development of industrialization and urbanization, the pollution problem of organic pollutants to the environment is becoming increasingly serious. Traditional methods for treating organic pollutants such as physical adsorption, chemical oxidation, and biodegradation have problems such as low efficiency, high cost, and secondary pollution. As an emerging environmental governance technology, photocatalysis technology has the advantages of high efficiency, environmental protection, and no secondary pollution, and has received extensive attention in recent years.

[0003] However, the existing photocatalysis technology mainly relies on ultraviolet light, and the proportion of ultraviolet light in sunlight is relatively low, which limits its popularization in practical applications and reduces the practicability of photocatalysis technology. Moreover, the cost of photocatalysis by emitting ultraviolet light is relatively high, which cannot meet the requirements of organic pollutant degradation.

[0004] Therefore, we propose an organic pollutant degradation system and method driven by visible light. Summary of the Invention

[0005] The present invention mainly solves the technical problems existing in the above-mentioned prior art, and provides an organic pollutant degradation system and method driven by visible light.

[0006] To achieve the above object, the present invention adopts the following technical solution. An organic pollutant degradation system driven by visible light includes a light source system, a photocatalytic reactor, a catalyst, and a control system.

[0007] Preferably, the light source system uses a visible light source, such as an LED lamp or a halogen lamp, which can provide stable visible light irradiation. The light source system also includes a reflector and a lens for concentrating and uniformly distributing light to improve the light energy utilization rate.

[0008] Preferably, the photocatalytic reactor is made of a transparent material, such as glass or quartz, which has good light transmittance and corrosion resistance. Multiple catalyst carriers are provided inside the photocatalytic reactor for fixing the catalyst. The photocatalytic reactor also has a feed inlet and a discharge outlet for facilitating the input and output of organic pollutants.

[0009] Preferably, the catalyst uses a photocatalytic material responsive to visible light, such as titanium dioxide doped with nitrogen or carbon, or other semiconductor materials responsive to visible light. The catalyst is fixed on the catalyst carrier by impregnation, spraying, or chemical vapor deposition to form a uniform catalytic layer.

[0010] Preferably, the control system includes a light intensity sensor, a temperature sensor, a controller, and an operation panel. The light intensity sensor and the temperature sensor monitor the light intensity and temperature inside the reactor in real time and transmit signals to the controller. The controller controls the working states of the light source system and the reactor according to the set parameters. The operation panel is used to set and display parameters such as light intensity and temperature, facilitating the use by operators.

[0011] A method for degrading organic pollutants driven by visible light includes the above-mentioned system for degrading organic pollutants driven by visible light, and specifically includes the following steps:

[0012] The first step: Preparation stage: Input the organic pollutant solution into the photocatalytic reactor through the feed port to ensure that the solution is evenly distributed on the catalyst carrier.

[0013] The second step: Illumination stage: Start the light source system to provide stable visible light irradiation. The reflector and the lens concentrate and evenly distribute the light to ensure that the catalyst fully absorbs light energy.

[0014] The third step: Catalytic reaction stage: Driven by visible light, the catalyst generates photoexcited electrons and holes, and then generates reactive oxygen species, which can efficiently degrade organic pollutants.

[0015] The fourth step: Monitoring and control stage: The light intensity sensor and the temperature sensor monitor the light intensity and temperature inside the reactor in real time. The controller adjusts the working states of the light source system and the reactor according to the monitoring results to ensure stable reaction conditions.

[0016] The fifth step: Output stage: The degraded solution is output through the discharge port for subsequent treatment or discharge.

[0017] The present invention provides a system and method for degrading organic pollutants driven by visible light. It has the following beneficial effects:

[0018] 1. The system and method for degrading organic pollutants driven by visible light integrate a light source system, a photocatalytic reactor, a catalyst, and a control system. By using a photocatalytic material responsive to visible light, it can efficiently degrade organic pollutants under visible light irradiation, improving the practicability and popularization of photocatalytic technology. The cost of the visible light source is relatively low, and the photocatalytic material can be reused, reducing the operating cost.

[0019] 2. The system and method for degrading organic pollutants driven by visible light achieve the effects of efficient degradation, environmental protection and pollution-free, simple operation, and low cost through reasonable structural design and operation process. It is applicable to the treatment of various organic pollutants and has a wide application prospect.

[0020] 3. The organic pollutant degradation system and method driven by visible light are provided with a control system, which realizes automatic control. The operation panel facilitates the operator to set and display parameters, simplifying the operation process.

[0021] 4. The organic pollutant degradation system and method driven by visible light are provided with a photocatalytic reactor. During the photocatalytic reaction process, no secondary pollution is generated, and the degradation products are mainly water and carbon dioxide, which are harmless to the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a system module diagram of the present invention;

[0023] Figure 2 It is a method flow chart of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary. For those of ordinary skill in the art, without creative efforts, other implementation drawings can also be obtained based on the provided drawings.

[0025] The structures, ratios, sizes, etc. illustrated in this specification are only used to cooperate with the content disclosed in the specification for those who are familiar with this technology to understand and read, and are not used to limit the limited conditions for the implementation of the present invention. Therefore, they do not have a substantial technical meaning. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present invention.

[0026] It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0027] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "inner", "outer", "side", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0028] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific situations.

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Embodiment 1: An organic pollutant degradation system driven by visible light, as Figure 1 shown, includes a light source system, a photocatalytic reactor, a catalyst, and a control system. The light source system uses a visible light source, such as an LED lamp or a halogen lamp, which can provide stable visible light irradiation. The light source system also includes a reflector and a lens for concentrating and uniformly distributing light to improve the light energy utilization rate. The photocatalytic reactor is made of a transparent material, such as glass or quartz, with good light transmittance and corrosion resistance. Inside the photocatalytic reactor, there are multiple catalyst carriers for fixing the catalyst. The photocatalytic reactor also has a feed port and a discharge port to facilitate the input and output of organic pollutants. The catalyst uses a visible light-responsive photocatalytic material, such as titanium dioxide (TiO2) doped with nitrogen or carbon, or other visible light-responsive semiconductor materials. The catalyst is fixed on the catalyst carrier by impregnation, spraying, or chemical vapor deposition methods to form a uniform catalytic layer. The control system includes a light intensity sensor, a temperature sensor, a controller, and an operation panel. The light intensity sensor and the temperature sensor real-time monitor the light intensity and temperature inside the reactor and transmit the signals to the controller. The controller controls the working states of the light source system and the reactor according to the set parameters. The operation panel is used to set and display parameters such as light intensity and temperature, which is convenient for the operator to use. By integrating the light source system, the photocatalytic reactor, the catalyst, and the control system, and using a visible light-responsive photocatalytic material, it can efficiently degrade organic pollutants under visible light irradiation, improving the practicability and popularization of photocatalytic technology. The cost of the visible light source is relatively low, and the photocatalytic material can be reused, reducing the operating cost.

[0031] Embodiment 2: On the basis of Embodiment 1, as Figure 2As shown, a method for degrading organic pollutants driven by visible light includes the above-mentioned system for degrading organic pollutants driven by visible light, and specifically includes the following steps: First step: Preparation stage: Input the organic pollutant solution into the photocatalytic reactor through the feed port to ensure that the solution is evenly distributed on the catalyst carrier; Second step: Illumination stage: Start the light source system to provide stable visible light irradiation. The reflector and lens concentrate and evenly distribute the light to ensure that the catalyst fully absorbs light energy; Third step: Catalytic reaction stage: Driven by visible light, the catalyst generates photogenerated electrons and holes, and then generates reactive oxygen species, which can efficiently degrade organic pollutants; Fourth step: Monitoring and control stage: The light intensity sensor and temperature sensor continuously monitor the light intensity and temperature in the reactor, and the controller adjusts the working states of the light source system and the reactor according to the monitoring results to ensure stable reaction conditions; Fifth step: Output stage: The degraded solution is output through the discharge port for subsequent treatment or discharge. Through reasonable structural design and operation process, the effects of efficient degradation, environmental protection and pollution-free, simple operation and low cost are achieved, which is applicable to the treatment of various organic pollutants and has broad application prospects.

[0032] Example 3: On the basis of Example 1 and Example 2, as Figure 1As shown, the light source system uses visible light sources, such as LED lights or halogen lights. The light source system also includes reflectors and lenses. The photocatalytic reactor is made of transparent materials, such as glass or quartz. Inside the photocatalytic reactor, there are multiple catalyst carriers. The photocatalytic reactor also has a feed inlet and a discharge outlet. The catalyst uses photocatalytic materials responsive to visible light, such as titanium dioxide (TiO2) doped with nitrogen or carbon, or other semiconductor materials responsive to visible light. The catalyst is fixed on the catalyst carrier by methods such as impregnation, spraying, or chemical vapor deposition to form a uniform catalytic layer. The control system includes a light intensity sensor, a temperature sensor, a controller, and an operation panel. It includes a light source system, a photocatalytic reactor, a catalyst, and a control system. The light source system uses visible light sources, such as LED lights or halogen lights, which can provide stable visible light irradiation. The light source system also includes reflectors and lenses for concentrating and uniformly distributing light to improve the utilization rate of light energy. The photocatalytic reactor is made of transparent materials, such as glass or quartz, with good light transmittance and corrosion resistance. Inside the photocatalytic reactor, there are multiple catalyst carriers for fixing the catalyst. The photocatalytic reactor also has a feed inlet and a discharge outlet to facilitate the input and output of organic pollutants. The catalyst uses photocatalytic materials responsive to visible light, such as titanium dioxide (TiO2) doped with nitrogen or carbon, or other semiconductor materials responsive to visible light. The catalyst is fixed on the catalyst carrier by methods such as impregnation, spraying, or chemical vapor deposition to form a uniform catalytic layer. The control system includes a light intensity sensor, a temperature sensor, a controller, and an operation panel. The light intensity sensor and the temperature sensor monitor the light intensity and temperature inside the reactor in real time and transmit the signals to the controller. The controller controls the working states of the light source system and the reactor according to the set parameters. The operation panel is used to set and display parameters such as light intensity and temperature, which is convenient for the operator to use. By setting up the control system, the control system realizes automatic control. The operation panel is convenient for the operator to set and display parameters, simplifying the operation process.

[0033] Example 4: On the basis of Example 1, Example 2, and Example 3, as Figure 1As shown, the photocatalytic reactor is made of transparent materials such as glass or quartz, which has good light transmittance and corrosion resistance. Inside the photocatalytic reactor, there are multiple catalyst carriers for fixing the catalyst. The photocatalytic reactor is also equipped with a feed inlet and a discharge outlet to facilitate the input and output of organic pollutants. The catalyst uses a photocatalytic material responsive to visible light, such as titanium dioxide (TiO2) doped with nitrogen or carbon, or other semiconductor materials responsive to visible light. The catalyst is fixed on the catalyst carrier by methods such as impregnation, spraying, or chemical vapor deposition to form a uniform catalytic layer. The control system includes a light intensity sensor, a temperature sensor, a controller, and an operation panel. The light intensity sensor and the temperature sensor real-time monitor the light intensity and temperature inside the reactor and transmit the signals to the controller. The controller controls the working states of the light source system and the reactor according to the set parameters. The operation panel is used to set and display parameters such as light intensity and temperature, which is convenient for operators to use. By setting up the photocatalytic reactor, no secondary pollution is generated during the photocatalytic reaction process, and the degradation products are mainly water and carbon dioxide, which are harmless to the environment.

[0034] Example 5: On the basis of Example 1, Example 2, Example 3, and Example 4, as Figure 2 shown, a method for degrading organic pollutants driven by visible light includes the above-mentioned system for degrading organic pollutants driven by visible light, and specifically includes the following steps:

[0035] The first step: Preparation stage: Input the organic pollutant solution into the photocatalytic reactor through the feed inlet to ensure that the solution is evenly distributed on the catalyst carrier;

[0036] The second step: Light irradiation stage: Start the light source system to provide stable visible light irradiation. The reflector and the lens concentrate and evenly distribute the light to ensure that the catalyst fully absorbs light energy;

[0037] The third step: Catalytic reaction stage: Driven by visible light, the catalyst generates photo-generated electrons and holes, and then generates reactive oxygen species, which can efficiently degrade organic pollutants;

[0038] The fourth step: Monitoring and control stage: The light intensity sensor and the temperature sensor real-time monitor the light intensity and temperature inside the reactor, and the controller adjusts the working states of the light source system and the reactor according to the monitoring results to ensure stable reaction conditions;

[0039] The fifth step: Output stage: The degraded solution is output through the discharge outlet for subsequent treatment or discharge.

[0040] Working principle of the present invention: During use, first input the organic pollutant solution into the photocatalytic reactor through the feed port to ensure that the solution is evenly distributed on the catalyst carrier. Start the light source system to provide stable visible light irradiation. The reflector and lens concentrate and evenly distribute the light to ensure that the catalyst fully absorbs light energy. Driven by visible light, the catalyst generates photo-generated electrons and holes, and then generates reactive oxygen species to efficiently degrade organic pollutants. The light intensity sensor and temperature sensor monitor the light intensity and temperature in the reactor in real time, and the controller adjusts the working states of the light source system and the reactor according to the monitoring results to ensure stable reaction conditions. The degraded solution is output through the discharge port for subsequent treatment or discharge.

[0041] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A visible light driven organic pollutant degradation system, characterized in that: It includes a light source system, a photocatalytic reactor, a catalyst and a control system. The light source system adopts a visible light source, such as an LED lamp or a halogen lamp, and the photocatalytic reactor is made of a transparent material, such as glass or quartz.

2. The organic pollutant degradation system driven by visible light according to claim 1, characterized in that: The light source system also includes a reflector and a lens.

3. The organic pollutant degradation system driven by visible light according to claim 1, characterized in that: A plurality of catalyst carriers are arranged inside the photocatalytic reactor, and the photocatalytic reactor is also provided with a feed inlet and a discharge outlet.

4. The organic pollutant degradation system driven by visible light according to claim 1, characterized in that: The catalyst adopts a photocatalytic material responsive to visible light, such as titanium dioxide doped with nitrogen or carbon, or other semiconductor materials responsive to visible light. The catalyst is fixed on the catalyst carrier by dipping, spraying or chemical vapor deposition to form a uniform catalytic layer.

5. The organic pollutant degradation system driven by visible light according to claim 1, characterized in that: The control system includes a light intensity sensor, a temperature sensor, a controller and an operation panel.

6. A visible light driven method for degradation of organic pollutants, characterized in that: The organic pollutant degradation system driven by visible light according to any one of claims 1 to 5 is specifically The following steps are involved: Step 1: Preparation stage: The organic pollutant solution is fed into the photocatalytic reactor through the feed port to ensure that the solution is evenly distributed on the catalyst carrier; Step 2: Illumination stage: Start the light source system to provide stable visible light irradiation. The reflector and lens concentrate and evenly distribute the light to ensure that the catalyst fully absorbs the light energy; Step 3: Catalytic reaction stage: Driven by visible light, the catalyst generates photogenerated electrons and holes, which in turn generate reactive oxygen species that can efficiently degrade organic pollutants; Step 4: Monitoring and control stage: The light intensity sensor and temperature sensor monitor the light intensity and temperature in the reactor in real time. The controller adjusts the working state of the light source system and the reactor according to the monitoring results to ensure stable reaction conditions. Step 5: Output stage: The degraded solution is output through the discharge port for subsequent treatment or discharge.

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