Sewage treatment device based on photocatalyst

Abstract

The invention relates to the technical field of sewage treatment, in particular to a photocatalyst-based sewage treatment device which comprises a main body, a segmentation treatment assembly is arranged in the main body, and a control assembly is fixedly connected to the side face of the main body; the porous ceramic material is used as a photocatalyst carrier and has good mechanical strength and chemical stability, meanwhile, the porous structure increases the contact area between the photocatalyst and sewage and improves the photocatalytic efficiency, the porous ceramic material has rich pore structures, the pores can significantly increase the specific surface area of the photocatalyst, and the photocatalytic efficiency is improved. The larger the specific surface area is, the larger the contact area of the photocatalyst and pollutants is, so that the photocatalytic reaction efficiency is improved, the retention time of sewage in the reaction tank is prolonged by designing a plurality of reaction areas and a step-by-step treatment mode, and the treatment effect is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, and in particular to a sewage treatment device based on photocatalyst. Background Art

[0002] In today's society, the process of industrialization and urbanization is accelerating, and the rational use and protection of water resources are becoming more and more critical. As the core link of environmental protection, sewage treatment is of great significance for maintaining ecological balance and ensuring the sustainable use of water resources. Traditional sewage treatment methods face many difficulties in practical applications. For example, physical treatment methods can often only remove large particle impurities in sewage, and the removal effect of soluble pollutants is not good; although chemical treatment methods can decompose pollutants to a certain extent, there are problems such as high treatment costs and easy secondary pollution. For example, when using chemical agents for coagulation and precipitation, the residues of the agents may cause new harm to the environment. Moreover, traditional biological treatment methods are greatly affected by factors such as sewage quality, temperature, and microbial activity. The treatment efficiency is unstable and it is difficult to meet increasingly stringent environmental protection standards.

[0003] As an emerging environmental protection technology, photocatalyst technology has brought new hope to sewage treatment. Photocatalysts can produce strong oxidizing free radicals under light conditions, which can effectively decompose organic pollutants in sewage, and have significant advantages such as high efficiency, energy saving, and no secondary pollution. However, the application of this technology in the field of sewage treatment is not smooth sailing. On the one hand, the immobilization technology of photocatalysts is still imperfect. In the actual sewage treatment process, photocatalysts are easy to lose, and it is difficult to achieve full and stable contact with sewage, which makes it difficult to improve the photocatalytic efficiency. On the other hand, the optimization of the photocatalytic reaction process also faces challenges. How to reasonably configure photocatalysts, light sources and reaction conditions according to the different components and treatment requirements of sewage to improve the photocatalytic efficiency and treatment effect has become an urgent problem to be solved. In addition, most of the existing sewage treatment devices based on photocatalysts lack a complete monitoring and control system, and cannot be adjusted in real time according to various parameters in the treatment process, making it difficult to ensure the stability and efficiency of the treatment effect.

[0004] With the continuous improvement of environmental protection requirements, the innovation and upgrading of sewage treatment technology is imminent. The development of a sewage treatment device that can overcome the shortcomings of traditional sewage treatment methods and effectively solve the bottleneck of photocatalyst technology application has become an important research direction in the current sewage treatment field, which has important practical significance for promoting the development of the environmental protection industry and realizing the sustainable use of water resources. Summary of the invention

[0005] In order to solve the problems of low treatment efficiency, high energy consumption, and secondary pollution in traditional sewage treatment methods, photocatalyst technology, as an emerging environmental protection technology, has the advantages of high efficiency, energy saving, and no secondary pollution. However, there are still some technical bottlenecks in its application in sewage treatment, such as the immobilization of photocatalysts, the improvement of photocatalytic efficiency, and the optimization of the treatment process. The purpose of the present invention is to provide a sewage treatment device based on photocatalyst to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: A sewage treatment device based on photocatalyst comprises a main body, a segmentation processing component is arranged inside the main body, and a control component is fixedly connected to the side of the main body; The main body comprises a reaction pool, and a bottom plate is fixedly connected to the bottom of the reaction pool; The segmentation processing assembly includes a partition, a photocatalyst fixing unit and a light source module are installed on the side of the partition, and the partition is provided with a plurality of; The control assembly comprises a control box, the interior of the control box is fixedly connected with a bearing plate, and the side of the bearing plate is fixedly connected with a flow sensor, a light intensity sensor, a liquid level sensor and a controller.

[0007] As a preferred solution of the present invention, the photocatalyst fixing unit comprises a plurality of photocatalyst carriers, and the photocatalyst carriers are porous ceramic materials, and a nano titanium dioxide photocatalyst layer is coated on the surface.

[0008] As a preferred solution of the present invention, the light source module is an ultraviolet lamp tube, which is evenly distributed in the reaction zone and has a wavelength range of 200-400 nanometers.

[0009] As a preferred solution of the present invention, the partition divides the reaction pool into a plurality of reaction zones, and each reaction zone is provided with a photocatalyst fixing unit and a light source module.

[0010] As a preferred solution of the present invention, the flow sensor, light intensity sensor, liquid level sensor and controller are all electrically connected.

[0011] As a preferred solution of the present invention, a display screen is fixedly connected to the side of the control box, and physical buttons are arranged on the side of the control box.

[0012] As a preferred solution of the present invention, a water outlet pump is fixedly connected to the side of the reaction tank, the water outlet pump extends to the interior of the reaction tank, and a water outlet pipe is installed on the top of the water outlet pump.

[0013] As a preferred solution of the present invention, a water inlet pump is installed on the side of the reaction tank, a delivery pipe is fixedly connected to the top of the water inlet pump, the delivery pipe extends to the interior of the reaction tank, and a water inlet pipe is fixedly connected to the side of the water inlet pump.

[0014] As a preferred solution of the present invention, it also includes a gas supply component, which includes an air pump and an aeration pipe. The air pump is fixedly installed on the outside of the main body, and the aeration pipe is installed in the reaction tank and is located below the photocatalyst fixing unit. A plurality of aeration holes are evenly distributed on the aeration pipe. The air pump is connected to the aeration pipe through a pipeline. When the air pump is working, air or ozone is transported to the aeration pipe, and then evenly released into the reaction tank through the aeration holes.

[0015] As a preferred solution of the present invention, a cleaning assembly is also included. The cleaning assembly includes a movable track installed on the top of the reaction tank, a cleaning trolley slidably installed on the track, and a high-pressure water gun arranged on the cleaning trolley, the cleaning trolley is driven by a motor to move on the track, and the high-pressure water gun is connected to an external water source, and its nozzle is adjustable at multiple angles.

[0016] Compared with the prior art, the present invention has the following beneficial effects: In terms of treatment efficiency, the use of porous ceramic materials as photocatalyst carriers is a highlight. Porous ceramics have good mechanical strength and chemical stability, which can ensure that photocatalysts can function stably in complex sewage environments. Its rich pore structure greatly increases the specific surface area of ​​the photocatalyst, greatly increasing the contact area between the photocatalyst and pollutants in the sewage. This means that the photocatalytic reaction can proceed more fully and organic pollutants can be decomposed more efficiently, thereby significantly improving the sewage treatment efficiency.

[0017] From the perspective of treatment effect, the multiple reaction zones designed in the device play a key role. The sewage is treated step by step in these reaction zones, which prolongs the residence time in the reaction tank. Each time it passes through a reaction zone, the pollutants in the sewage can be further decomposed, and the treatment effect is greatly improved. Moreover, each reaction zone is equipped with a photocatalyst fixing unit and a light source module to ensure the continuous photocatalytic reaction and ensure that the treated sewage can meet higher standards.

[0018] The device is also very intelligent and automated. The flow sensor, light intensity sensor and liquid level sensor in the control component work together to monitor various parameters in the sewage treatment process in real time. The controller automatically adjusts the water flow rate, light intensity, etc. according to the data fed back by these sensors, realizing intelligent control of the sewage treatment process. This not only improves the stability of the treatment effect, but also reduces manual intervention and reduces labor costs.

[0019] In addition, the device also has good stability and durability. The chemical stability and mechanical strength of the porous ceramic photocatalyst carrier ensure that it is not easily damaged during long-term use, reducing the frequency of replacing the photocatalyst carrier. At the same time, the perfect control system can timely detect and adjust problems in the operation of the device, further ensuring the stable operation of the device, extending the service life of the device, and providing reliable equipment support for sewage treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the segmentation processing component of the present invention; Figure 3 It is a schematic diagram of the control component structure of the present invention; Figure 4 It is a schematic diagram of the structure of the liquid inlet component of the present invention.

[0021] In the figure: 1. Main body; 101. Reaction tank; 102. Bottom plate; 103. Water outlet pipe; 104. Water outlet pump; 105. Water inlet pump; 106. Delivery pipe; 107. Water inlet pipe; 2. Segmentation processing component; 201. Partition plate; 202. Photocatalyst fixing unit; 203. Light source module; 3. Control component; 301. Control box; 302. Display screen; 303. Physical buttons; 304. Carrying board; 305. Flow sensor; 306. Light intensity sensor; 307. Liquid level sensor; 308. Controller. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] For examples, see Figure 1-Figure 4 , the present invention provides a technical solution: A sewage treatment device based on photocatalyst comprises a main body 1, a segmentation processing component 2 is arranged inside the main body 1, and a control component 3 is fixedly connected to the side of the main body 1.

[0024] In this embodiment, Figure 1 , Figure 2 and Figure 3As shown, the main body 1 includes a reaction tank 101, the bottom of the reaction tank 101 is fixedly connected to a bottom plate 102, the segmentation processing component 2 includes a partition 201, the side of the partition 201 is installed with a photocatalyst fixing unit 202 and a light source module 203, the partition 201 is provided with a plurality of, the control component 3 includes a control box 301, the inside of the control box 301 is fixedly connected to a carrier plate 304, the side of the carrier plate 304 is fixedly connected to a flow sensor 305, a light intensity sensor 306, a liquid level sensor 307 and a controller 308, and a porous ceramic material is used as a photocatalyst carrier, which has good mechanical strength and chemical stability. At the same time, the porous structure increases the contact area between the photocatalyst and the sewage, and improves the photocatalytic efficiency. The porous ceramic material has a rich pore structure, and these pores can significantly increase the specific surface area of ​​the photocatalyst. The larger the specific surface area, the larger the contact area between the photocatalyst and the pollutant, thereby improving the efficiency of the photocatalytic reaction.

[0025] Among them, the photocatalyst fixing unit 202 includes multiple photocatalyst carriers, the photocatalyst carrier is a porous ceramic material, and the surface is coated with a nano titanium dioxide photocatalyst layer. The light source module 203 is an ultraviolet lamp tube, which is evenly distributed in the reaction zone and has a wavelength range of 200-400 nanometers. The partition 201 divides the reaction tank 101 into multiple reaction zones, and each reaction zone is provided with a photocatalyst fixing unit 202 and a light source module 203. The flow sensor 305, the light intensity sensor 306, the liquid level sensor 307 and the controller 308 are all electrically connected. The side of the control box 301 is fixedly connected with a display screen 302, and the side of the control box 301 is provided with a physical button 303. By designing multiple reaction zones, the residence time of sewage in the reaction tank 101 is extended by a step-by-step treatment method, and the treatment effect is further improved. It is equipped with a complete control system, which can monitor and adjust various parameters in the sewage treatment process in real time, and realize intelligent and automated sewage treatment.

[0026] In this embodiment, Figure 1 and Figure 4 As shown, a water outlet pump 104 is fixedly connected to the side of the reaction tank 101, and the water outlet pump 104 extends to the interior of the reaction tank 101. A water outlet pipe 103 is installed on the top of the water outlet pump 104. A water inlet pump 105 is installed on the side of the reaction tank 101. A delivery pipe 106 is fixedly connected to the top of the water inlet pump 105, and the delivery pipe 106 extends to the interior of the reaction tank 101. A water inlet pipe 107 is fixedly connected to the side of the water inlet pump 105. The water outlet pump 104 and the water inlet pump 105 can provide sufficient pressure for the liquid, so that it can overcome the resistance in the delivery process and improve the delivery efficiency of the liquid.

[0027] The present invention also includes a gas supply assembly. The gas supply assembly includes an air pump and an aeration pipe, the air pump is fixedly mounted on the outside of the main body 1, and the aeration pipe is installed in the reaction tank 101 and is located below the photocatalyst fixing unit 202. A plurality of aeration holes are evenly distributed on the aeration pipe, and the air pump is connected to the aeration pipe through a pipeline. When the air pump is working, air or a specific gas such as ozone is transported to the aeration pipe, and then uniformly released into the reaction tank through the aeration holes. The introduction of gas can increase the dissolved oxygen content in the sewage, provide more favorable conditions for the photocatalytic reaction, promote the oxidative decomposition of organic pollutants in the sewage, and further improve the sewage treatment effect. At the same time, the flow of gas can also play a role in stirring the sewage, so that the sewage and the photocatalyst are more fully in contact, thereby improving the photocatalytic efficiency.

[0028] In the present invention, a cleaning assembly is also included. The cleaning assembly includes a movable track installed on the top of the reaction tank 101, a cleaning trolley slidably installed on the track, and a high-pressure water gun arranged on the cleaning trolley. The cleaning trolley is driven by a motor to move on the track, and the high-pressure water gun is connected to an external water source, and its nozzle can be adjusted at multiple angles. When it is necessary to clean the photocatalyst fixing unit 202, the light source module 203 and the pool wall inside the reaction tank 101, start the cleaning trolley and move it to a specified position along the track. By adjusting the angle of the high-pressure water gun nozzle, high-pressure water spray cleaning is performed on the corresponding parts, which can effectively remove the dirt and impurities accumulated on the surface of the photocatalyst and other parts, ensure the activity of the photocatalyst and the normal operation of the device, and extend the service life of the device.

[0029] Working process of the present invention: When a sewage treatment device based on photocatalyst designed by the present invention is in operation, sewage enters the first reaction zone of the reaction tank 101 through the water inlet, contacts the photocatalyst on the surface of the photocatalyst carrier, and the light emitted by the ultraviolet lamp irradiates the photocatalyst to excite the photocatalyst to generate photogenerated electrons and holes, thereby generating strong oxidizing free radicals to decompose organic pollutants in the sewage. The sewage treated in the first reaction zone flows into the next reaction zone to continue the photocatalytic reaction until the set treatment effect is achieved. The treated sewage is discharged through the water outlet. At the same time, the control system automatically adjusts parameters such as the water inlet flow rate and the light source intensity according to the data fed back by the sensor to ensure the stability and efficiency of the treatment effect. Preparation of photocatalyst carrier, porous ceramic material is immersed in nano titanium dioxide sol, a layer of nano titanium dioxide photocatalyst layer is evenly coated on the ceramic surface by dipping-pulling method, the coated ceramic material is dried and cured at a certain temperature to form a stable photocatalyst carrier device assembly and debugging, the prepared photocatalyst carrier is installed in each reaction zone of the reaction tank 101, the ultraviolet lamp is fixedly installed, and the power supply and control system are connected, the device is debugged, and the water flow rate, light source intensity and other parameters are adjusted by simulating sewage to achieve the best treatment effect, and the actual sewage is used for treatment test to monitor the water quality indicators before and after treatment.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sewage treatment device based on photocatalysis, comprising a main body (1), characterized in that: A segmentation processing component (2) is disposed inside the main body (1), and a control component (3) is fixedly connected to the side of the main body (1); The main body (1) comprises a reaction pool (101), and a bottom plate (102) is fixedly connected to the bottom of the reaction pool (101); The segmentation processing component (2) comprises a partition (201), a photocatalyst fixing unit (202) and a light source module (203) are installed on the side of the partition (201), and the partition (201) is provided with a plurality of; The control assembly (3) comprises a control box (301), the interior of the control box (301) being fixedly connected to a carrier plate (304), and the side of the carrier plate (304) being fixedly connected to a flow sensor (305), a light intensity sensor (306), a liquid level sensor (307) and a controller (308).

2. A sewage treatment device based on photocatalysis according to claim 1, characterized in that: The photocatalyst fixing unit (202) comprises a plurality of photocatalyst carriers, wherein the photocatalyst carriers are porous ceramic materials and a nano titanium dioxide photocatalyst layer is coated on the surface.

3. A sewage treatment device based on photocatalysis according to claim 1, characterized in that: The light source module (203) is an ultraviolet lamp tube evenly distributed in the reaction area, and has a wavelength range of 200-400 nanometers.

4. A sewage treatment device based on photocatalysis according to claim 1, characterized in that: The partition (201) divides the reaction pool (101) into a plurality of reaction zones, and each reaction zone is provided with a photocatalyst fixing unit (202) and a light source module (203).

5. A sewage treatment device based on photocatalysis according to claim 1, characterized in that: The flow sensor (305), the light intensity sensor (306), the liquid level sensor (307) and the controller (308) are all electrically connected.

6. A sewage treatment device based on photocatalysis according to claim 1, characterized in that: A display screen (302) is fixedly connected to a side surface of the control box (301), and a physical button (303) is arranged on the side surface of the control box (301).

7. A sewage treatment device based on photocatalysis according to claim 1, characterized in that: A water outlet pump (104) is fixedly connected to the side of the reaction tank (101), the water outlet pump (104) extends into the interior of the reaction tank (101), and a water outlet pipe (103) is installed on the top of the water outlet pump (104).

8. A sewage treatment device based on photocatalysis according to claim 3, characterized in that: A water inlet pump (105) is installed on the side of the reaction tank (101), a delivery pipe (106) is fixedly connected to the top of the water inlet pump (105), the delivery pipe (106) extends into the interior of the reaction tank (101), and a water inlet pipe (107) is fixedly connected to the side of the water inlet pump (105).

9. The sewage treatment device based on photocatalysis according to claim 1, characterized in that: It also includes a gas supply component, which includes an air pump and an aeration pipe. The air pump is fixedly installed on the outside of the main body (1), and the aeration pipe is installed in the reaction tank (101) and is located below the photocatalyst fixing unit (202). A plurality of aeration holes are evenly distributed on the aeration pipe. The air pump is connected to the aeration pipe through a pipeline. When the air pump is working, air or ozone is transported to the aeration pipe and then evenly released into the reaction tank through the aeration holes.

10. The sewage treatment device based on photocatalysis according to claim 1, characterized in that: It also includes a cleaning component, which includes a movable track installed on the top of the reaction tank (101), a cleaning trolley slidably installed on the track, and a high-pressure water gun arranged on the cleaning trolley, the cleaning trolley is driven by a motor to move on the track, and the high-pressure water gun is connected to an external water source, and its nozzle is adjustable at multiple angles.

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